author | mchung |
Mon, 27 Jul 2009 09:06:22 -0700 | |
changeset 3578 | 411436f0a4a2 |
parent 3575 | 224791e7ecab |
child 3820 | 0a8fbbe180db |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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* |
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*/ |
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#include "incls/_precompiled.incl" |
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#include "incls/_jvm.cpp.incl" |
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#include <errno.h> |
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/* |
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NOTE about use of any ctor or function call that can trigger a safepoint/GC: |
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such ctors and calls MUST NOT come between an oop declaration/init and its |
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usage because if objects are move this may cause various memory stomps, bus |
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errors and segfaults. Here is a cookbook for causing so called "naked oop |
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failures": |
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JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { |
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JVMWrapper("JVM_GetClassDeclaredFields"); |
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// Object address to be held directly in mirror & not visible to GC |
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oop mirror = JNIHandles::resolve_non_null(ofClass); |
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// If this ctor can hit a safepoint, moving objects around, then |
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ComplexConstructor foo; |
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// Boom! mirror may point to JUNK instead of the intended object |
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(some dereference of mirror) |
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// Here's another call that may block for GC, making mirror stale |
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MutexLocker ml(some_lock); |
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// And here's an initializer that can result in a stale oop |
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// all in one step. |
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oop o = call_that_can_throw_exception(TRAPS); |
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The solution is to keep the oop declaration BELOW the ctor or function |
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call that might cause a GC, do another resolve to reassign the oop, or |
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consider use of a Handle instead of an oop so there is immunity from object |
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motion. But note that the "QUICK" entries below do not have a handlemark |
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and thus can only support use of handles passed in. |
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*/ |
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static void trace_class_resolution_impl(klassOop to_class, TRAPS) { |
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ResourceMark rm; |
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int line_number = -1; |
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const char * source_file = NULL; |
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const char * trace = "explicit"; |
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klassOop caller = NULL; |
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JavaThread* jthread = JavaThread::current(); |
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if (jthread->has_last_Java_frame()) { |
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vframeStream vfst(jthread); |
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// scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames |
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symbolHandle access_controller = oopFactory::new_symbol_handle("java/security/AccessController", CHECK); |
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klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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symbolHandle privileged_action = oopFactory::new_symbol_handle("java/security/PrivilegedAction", CHECK); |
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klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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methodOop last_caller = NULL; |
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while (!vfst.at_end()) { |
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methodOop m = vfst.method(); |
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if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::classloader_klass())&& |
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!vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && |
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!vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { |
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break; |
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} |
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last_caller = m; |
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vfst.next(); |
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} |
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// if this is called from Class.forName0 and that is called from Class.forName, |
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// then print the caller of Class.forName. If this is Class.loadClass, then print |
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// that caller, otherwise keep quiet since this should be picked up elsewhere. |
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bool found_it = false; |
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if (!vfst.at_end() && |
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instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && |
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vfst.method()->name() == vmSymbols::forName0_name()) { |
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vfst.next(); |
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if (!vfst.at_end() && |
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instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && |
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vfst.method()->name() == vmSymbols::forName_name()) { |
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vfst.next(); |
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found_it = true; |
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} |
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} else if (last_caller != NULL && |
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instanceKlass::cast(last_caller->method_holder())->name() == |
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vmSymbols::java_lang_ClassLoader() && |
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(last_caller->name() == vmSymbols::loadClassInternal_name() || |
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last_caller->name() == vmSymbols::loadClass_name())) { |
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found_it = true; |
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} else if (!vfst.at_end()) { |
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if (vfst.method()->is_native()) { |
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// JNI call |
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found_it = true; |
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} |
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} |
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if (found_it && !vfst.at_end()) { |
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// found the caller |
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caller = vfst.method()->method_holder(); |
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line_number = vfst.method()->line_number_from_bci(vfst.bci()); |
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if (line_number == -1) { |
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// show method name if it's a native method |
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trace = vfst.method()->name_and_sig_as_C_string(); |
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} |
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symbolOop s = instanceKlass::cast(caller)->source_file_name(); |
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if (s != NULL) { |
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source_file = s->as_C_string(); |
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} |
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} |
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} |
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if (caller != NULL) { |
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if (to_class != caller) { |
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const char * from = Klass::cast(caller)->external_name(); |
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const char * to = Klass::cast(to_class)->external_name(); |
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// print in a single call to reduce interleaving between threads |
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if (source_file != NULL) { |
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tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
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} else { |
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tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
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} |
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} |
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} |
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} |
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void trace_class_resolution(klassOop to_class) { |
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EXCEPTION_MARK; |
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trace_class_resolution_impl(to_class, THREAD); |
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if (HAS_PENDING_EXCEPTION) { |
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CLEAR_PENDING_EXCEPTION; |
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} |
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} |
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// Wrapper to trace JVM functions |
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#ifdef ASSERT |
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class JVMTraceWrapper : public StackObj { |
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public: |
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JVMTraceWrapper(const char* format, ...) { |
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if (TraceJVMCalls) { |
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va_list ap; |
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va_start(ap, format); |
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tty->print("JVM "); |
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tty->vprint_cr(format, ap); |
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va_end(ap); |
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} |
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} |
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}; |
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Histogram* JVMHistogram; |
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volatile jint JVMHistogram_lock = 0; |
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class JVMHistogramElement : public HistogramElement { |
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public: |
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JVMHistogramElement(const char* name); |
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}; |
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JVMHistogramElement::JVMHistogramElement(const char* elementName) { |
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_name = elementName; |
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uintx count = 0; |
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while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { |
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while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { |
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count +=1; |
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if ( (WarnOnStalledSpinLock > 0) |
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&& (count % WarnOnStalledSpinLock == 0)) { |
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warning("JVMHistogram_lock seems to be stalled"); |
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} |
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} |
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} |
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if(JVMHistogram == NULL) |
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JVMHistogram = new Histogram("JVM Call Counts",100); |
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JVMHistogram->add_element(this); |
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Atomic::dec(&JVMHistogram_lock); |
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} |
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#define JVMCountWrapper(arg) \ |
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static JVMHistogramElement* e = new JVMHistogramElement(arg); \ |
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if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! |
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#define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) |
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#define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) |
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#define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) |
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#define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) |
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#else |
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#define JVMWrapper(arg1) |
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#define JVMWrapper2(arg1, arg2) |
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#define JVMWrapper3(arg1, arg2, arg3) |
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#define JVMWrapper4(arg1, arg2, arg3, arg4) |
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#endif |
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// Interface version ///////////////////////////////////////////////////////////////////// |
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JVM_LEAF(jint, JVM_GetInterfaceVersion()) |
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return JVM_INTERFACE_VERSION; |
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JVM_END |
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// java.lang.System ////////////////////////////////////////////////////////////////////// |
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JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) |
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JVMWrapper("JVM_CurrentTimeMillis"); |
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return os::javaTimeMillis(); |
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JVM_END |
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JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) |
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JVMWrapper("JVM_NanoTime"); |
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return os::javaTimeNanos(); |
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JVM_END |
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JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, |
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jobject dst, jint dst_pos, jint length)) |
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JVMWrapper("JVM_ArrayCopy"); |
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// Check if we have null pointers |
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if (src == NULL || dst == NULL) { |
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THROW(vmSymbols::java_lang_NullPointerException()); |
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} |
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arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); |
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arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); |
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assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); |
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assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); |
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// Do copy |
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Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); |
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JVM_END |
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static void set_property(Handle props, const char* key, const char* value, TRAPS) { |
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JavaValue r(T_OBJECT); |
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// public synchronized Object put(Object key, Object value); |
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HandleMark hm(THREAD); |
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Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); |
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Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); |
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JavaCalls::call_virtual(&r, |
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props, |
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KlassHandle(THREAD, SystemDictionary::properties_klass()), |
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vmSymbolHandles::put_name(), |
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vmSymbolHandles::object_object_object_signature(), |
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key_str, |
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value_str, |
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THREAD); |
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} |
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267 |
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268 |
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#define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); |
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JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) |
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JVMWrapper("JVM_InitProperties"); |
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ResourceMark rm; |
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275 |
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Handle props(THREAD, JNIHandles::resolve_non_null(properties)); |
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// System property list includes both user set via -D option and |
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// jvm system specific properties. |
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280 |
for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { |
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PUTPROP(props, p->key(), p->value()); |
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} |
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// Convert the -XX:MaxDirectMemorySize= command line flag |
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// to the sun.nio.MaxDirectMemorySize property. |
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// Do this after setting user properties to prevent people |
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// from setting the value with a -D option, as requested. |
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{ |
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char as_chars[256]; |
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jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); |
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PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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} |
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// JVM monitoring and management support |
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// Add the sun.management.compiler property for the compiler's name |
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{ |
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297 |
#undef CSIZE |
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298 |
#if defined(_LP64) || defined(_WIN64) |
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299 |
#define CSIZE "64-Bit " |
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300 |
#else |
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301 |
#define CSIZE |
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#endif // 64bit |
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304 |
#ifdef TIERED |
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305 |
const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; |
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306 |
#else |
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307 |
#if defined(COMPILER1) |
|
308 |
const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; |
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309 |
#elif defined(COMPILER2) |
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310 |
const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; |
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311 |
#else |
|
312 |
const char* compiler_name = ""; |
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313 |
#endif // compilers |
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314 |
#endif // TIERED |
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315 |
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316 |
if (*compiler_name != '\0' && |
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317 |
(Arguments::mode() != Arguments::_int)) { |
|
318 |
PUTPROP(props, "sun.management.compiler", compiler_name); |
|
319 |
} |
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320 |
} |
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321 |
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322 |
return properties; |
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323 |
JVM_END |
|
324 |
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325 |
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326 |
// java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
|
327 |
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328 |
extern volatile jint vm_created; |
|
329 |
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330 |
JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) |
|
331 |
if (vm_created != 0 && (code == 0)) { |
|
332 |
// The VM is about to exit. We call back into Java to check whether finalizers should be run |
|
333 |
Universe::run_finalizers_on_exit(); |
|
334 |
} |
|
335 |
before_exit(thread); |
|
336 |
vm_exit(code); |
|
337 |
JVM_END |
|
338 |
||
339 |
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340 |
JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) |
|
341 |
before_exit(thread); |
|
342 |
vm_exit(code); |
|
343 |
JVM_END |
|
344 |
||
345 |
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346 |
JVM_LEAF(void, JVM_OnExit(void (*func)(void))) |
|
347 |
register_on_exit_function(func); |
|
348 |
JVM_END |
|
349 |
||
350 |
||
351 |
JVM_ENTRY_NO_ENV(void, JVM_GC(void)) |
|
352 |
JVMWrapper("JVM_GC"); |
|
353 |
if (!DisableExplicitGC) { |
|
354 |
Universe::heap()->collect(GCCause::_java_lang_system_gc); |
|
355 |
} |
|
356 |
JVM_END |
|
357 |
||
358 |
||
359 |
JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) |
|
360 |
JVMWrapper("JVM_MaxObjectInspectionAge"); |
|
361 |
return Universe::heap()->millis_since_last_gc(); |
|
362 |
JVM_END |
|
363 |
||
364 |
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365 |
JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) |
|
366 |
if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); |
|
367 |
JVM_END |
|
368 |
||
369 |
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370 |
JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) |
|
371 |
if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); |
|
372 |
JVM_END |
|
373 |
||
374 |
static inline jlong convert_size_t_to_jlong(size_t val) { |
|
375 |
// In the 64-bit vm, a size_t can overflow a jlong (which is signed). |
|
376 |
NOT_LP64 (return (jlong)val;) |
|
377 |
LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) |
|
378 |
} |
|
379 |
||
380 |
JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) |
|
381 |
JVMWrapper("JVM_TotalMemory"); |
|
382 |
size_t n = Universe::heap()->capacity(); |
|
383 |
return convert_size_t_to_jlong(n); |
|
384 |
JVM_END |
|
385 |
||
386 |
||
387 |
JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) |
|
388 |
JVMWrapper("JVM_FreeMemory"); |
|
389 |
CollectedHeap* ch = Universe::heap(); |
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size_t n; |
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391 |
{ |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
363
diff
changeset
|
392 |
MutexLocker x(Heap_lock); |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
363
diff
changeset
|
393 |
n = ch->capacity() - ch->used(); |
4c24294029a9
6711316: Open source the Garbage-First garbage collector
ysr
parents:
363
diff
changeset
|
394 |
} |
1 | 395 |
return convert_size_t_to_jlong(n); |
396 |
JVM_END |
|
397 |
||
398 |
||
399 |
JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) |
|
400 |
JVMWrapper("JVM_MaxMemory"); |
|
401 |
size_t n = Universe::heap()->max_capacity(); |
|
402 |
return convert_size_t_to_jlong(n); |
|
403 |
JVM_END |
|
404 |
||
405 |
||
406 |
JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) |
|
407 |
JVMWrapper("JVM_ActiveProcessorCount"); |
|
408 |
return os::active_processor_count(); |
|
409 |
JVM_END |
|
410 |
||
411 |
||
412 |
||
413 |
// java.lang.Throwable ////////////////////////////////////////////////////// |
|
414 |
||
415 |
||
416 |
JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) |
|
417 |
JVMWrapper("JVM_FillInStackTrace"); |
|
418 |
Handle exception(thread, JNIHandles::resolve_non_null(receiver)); |
|
419 |
java_lang_Throwable::fill_in_stack_trace(exception); |
|
420 |
JVM_END |
|
421 |
||
422 |
||
423 |
JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) |
|
424 |
JVMWrapper("JVM_PrintStackTrace"); |
|
425 |
// Note: This is no longer used in Merlin, but we still support it for compatibility. |
|
426 |
oop exception = JNIHandles::resolve_non_null(receiver); |
|
427 |
oop stream = JNIHandles::resolve_non_null(printable); |
|
428 |
java_lang_Throwable::print_stack_trace(exception, stream); |
|
429 |
JVM_END |
|
430 |
||
431 |
||
432 |
JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) |
|
433 |
JVMWrapper("JVM_GetStackTraceDepth"); |
|
434 |
oop exception = JNIHandles::resolve(throwable); |
|
435 |
return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); |
|
436 |
JVM_END |
|
437 |
||
438 |
||
439 |
JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) |
|
440 |
JVMWrapper("JVM_GetStackTraceElement"); |
|
441 |
JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC |
|
442 |
oop exception = JNIHandles::resolve(throwable); |
|
443 |
oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); |
|
444 |
return JNIHandles::make_local(env, element); |
|
445 |
JVM_END |
|
446 |
||
447 |
||
448 |
// java.lang.Object /////////////////////////////////////////////// |
|
449 |
||
450 |
||
451 |
JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) |
|
452 |
JVMWrapper("JVM_IHashCode"); |
|
453 |
// as implemented in the classic virtual machine; return 0 if object is NULL |
|
454 |
return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; |
|
455 |
JVM_END |
|
456 |
||
457 |
||
458 |
JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) |
|
459 |
JVMWrapper("JVM_MonitorWait"); |
|
460 |
Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); |
|
461 |
assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); |
|
462 |
JavaThreadInObjectWaitState jtiows(thread, ms != 0); |
|
463 |
if (JvmtiExport::should_post_monitor_wait()) { |
|
464 |
JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); |
|
465 |
} |
|
466 |
ObjectSynchronizer::wait(obj, ms, CHECK); |
|
467 |
JVM_END |
|
468 |
||
469 |
||
470 |
JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) |
|
471 |
JVMWrapper("JVM_MonitorNotify"); |
|
472 |
Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); |
|
473 |
assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); |
|
474 |
ObjectSynchronizer::notify(obj, CHECK); |
|
475 |
JVM_END |
|
476 |
||
477 |
||
478 |
JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) |
|
479 |
JVMWrapper("JVM_MonitorNotifyAll"); |
|
480 |
Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); |
|
481 |
assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); |
|
482 |
ObjectSynchronizer::notifyall(obj, CHECK); |
|
483 |
JVM_END |
|
484 |
||
485 |
||
486 |
JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) |
|
487 |
JVMWrapper("JVM_Clone"); |
|
488 |
Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); |
|
489 |
const KlassHandle klass (THREAD, obj->klass()); |
|
490 |
JvmtiVMObjectAllocEventCollector oam; |
|
491 |
||
492 |
#ifdef ASSERT |
|
493 |
// Just checking that the cloneable flag is set correct |
|
494 |
if (obj->is_javaArray()) { |
|
495 |
guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
|
496 |
} else { |
|
497 |
guarantee(obj->is_instance(), "should be instanceOop"); |
|
498 |
bool cloneable = klass->is_subtype_of(SystemDictionary::cloneable_klass()); |
|
499 |
guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
|
500 |
} |
|
501 |
#endif |
|
502 |
||
503 |
// Check if class of obj supports the Cloneable interface. |
|
504 |
// All arrays are considered to be cloneable (See JLS 20.1.5) |
|
505 |
if (!klass->is_cloneable()) { |
|
506 |
ResourceMark rm(THREAD); |
|
507 |
THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); |
|
508 |
} |
|
509 |
||
510 |
// Make shallow object copy |
|
511 |
const int size = obj->size(); |
|
512 |
oop new_obj = NULL; |
|
513 |
if (obj->is_javaArray()) { |
|
514 |
const int length = ((arrayOop)obj())->length(); |
|
515 |
new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); |
|
516 |
} else { |
|
517 |
new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); |
|
518 |
} |
|
519 |
// 4839641 (4840070): We must do an oop-atomic copy, because if another thread |
|
520 |
// is modifying a reference field in the clonee, a non-oop-atomic copy might |
|
521 |
// be suspended in the middle of copying the pointer and end up with parts |
|
522 |
// of two different pointers in the field. Subsequent dereferences will crash. |
|
523 |
// 4846409: an oop-copy of objects with long or double fields or arrays of same |
|
524 |
// won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead |
|
525 |
// of oops. We know objects are aligned on a minimum of an jlong boundary. |
|
526 |
// The same is true of StubRoutines::object_copy and the various oop_copy |
|
527 |
// variants, and of the code generated by the inline_native_clone intrinsic. |
|
528 |
assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); |
|
529 |
Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, |
|
530 |
(size_t)align_object_size(size) / HeapWordsPerLong); |
|
531 |
// Clear the header |
|
532 |
new_obj->init_mark(); |
|
533 |
||
534 |
// Store check (mark entire object and let gc sort it out) |
|
535 |
BarrierSet* bs = Universe::heap()->barrier_set(); |
|
536 |
assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); |
|
537 |
bs->write_region(MemRegion((HeapWord*)new_obj, size)); |
|
538 |
||
539 |
// Caution: this involves a java upcall, so the clone should be |
|
540 |
// "gc-robust" by this stage. |
|
541 |
if (klass->has_finalizer()) { |
|
542 |
assert(obj->is_instance(), "should be instanceOop"); |
|
543 |
new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
|
544 |
} |
|
545 |
||
546 |
return JNIHandles::make_local(env, oop(new_obj)); |
|
547 |
JVM_END |
|
548 |
||
549 |
// java.lang.Compiler //////////////////////////////////////////////////// |
|
550 |
||
551 |
// The initial cuts of the HotSpot VM will not support JITs, and all existing |
|
552 |
// JITs would need extensive changes to work with HotSpot. The JIT-related JVM |
|
553 |
// functions are all silently ignored unless JVM warnings are printed. |
|
554 |
||
555 |
JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) |
|
556 |
if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); |
|
557 |
JVM_END |
|
558 |
||
559 |
||
560 |
JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) |
|
561 |
if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); |
|
562 |
return JNI_FALSE; |
|
563 |
JVM_END |
|
564 |
||
565 |
||
566 |
JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) |
|
567 |
if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); |
|
568 |
return JNI_FALSE; |
|
569 |
JVM_END |
|
570 |
||
571 |
||
572 |
JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) |
|
573 |
if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); |
|
574 |
return JNI_FALSE; |
|
575 |
JVM_END |
|
576 |
||
577 |
||
578 |
JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) |
|
579 |
if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); |
|
580 |
return NULL; |
|
581 |
JVM_END |
|
582 |
||
583 |
||
584 |
JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) |
|
585 |
if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); |
|
586 |
JVM_END |
|
587 |
||
588 |
||
589 |
JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) |
|
590 |
if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); |
|
591 |
JVM_END |
|
592 |
||
593 |
||
594 |
||
595 |
// Error message support ////////////////////////////////////////////////////// |
|
596 |
||
597 |
JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) |
|
598 |
JVMWrapper("JVM_GetLastErrorString"); |
|
599 |
return hpi::lasterror(buf, len); |
|
600 |
JVM_END |
|
601 |
||
602 |
||
603 |
// java.io.File /////////////////////////////////////////////////////////////// |
|
604 |
||
605 |
JVM_LEAF(char*, JVM_NativePath(char* path)) |
|
606 |
JVMWrapper2("JVM_NativePath (%s)", path); |
|
607 |
return hpi::native_path(path); |
|
608 |
JVM_END |
|
609 |
||
610 |
||
611 |
// Misc. class handling /////////////////////////////////////////////////////////// |
|
612 |
||
613 |
||
614 |
JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) |
|
615 |
JVMWrapper("JVM_GetCallerClass"); |
|
616 |
klassOop k = thread->security_get_caller_class(depth); |
|
617 |
return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
|
618 |
JVM_END |
|
619 |
||
620 |
||
621 |
JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) |
|
622 |
JVMWrapper("JVM_FindPrimitiveClass"); |
|
623 |
oop mirror = NULL; |
|
624 |
BasicType t = name2type(utf); |
|
625 |
if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { |
|
626 |
mirror = Universe::java_mirror(t); |
|
627 |
} |
|
628 |
if (mirror == NULL) { |
|
629 |
THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); |
|
630 |
} else { |
|
631 |
return (jclass) JNIHandles::make_local(env, mirror); |
|
632 |
} |
|
633 |
JVM_END |
|
634 |
||
635 |
||
636 |
JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) |
|
637 |
JVMWrapper("JVM_ResolveClass"); |
|
638 |
if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); |
|
639 |
JVM_END |
|
640 |
||
3578
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
641 |
|
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
642 |
// Returns a class loaded by the bootstrap class loader; or null |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
643 |
// if not found. ClassNotFoundException is not thrown. |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
644 |
// |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
645 |
// Rationale behind JVM_FindClassFromBootLoader |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
646 |
// a> JVM_FindClassFromClassLoader was never exported in the export tables. |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
647 |
// b> because of (a) java.dll has a direct dependecy on the unexported |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
648 |
// private symbol "_JVM_FindClassFromClassLoader@20". |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
649 |
// c> the launcher cannot use the private symbol as it dynamically opens |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
650 |
// the entry point, so if something changes, the launcher will fail |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
651 |
// unexpectedly at runtime, it is safest for the launcher to dlopen a |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
652 |
// stable exported interface. |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
653 |
// d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
654 |
// signature to change from _JVM_FindClassFromClassLoader@20 to |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
655 |
// JVM_FindClassFromClassLoader and will not be backward compatible |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
656 |
// with older JDKs. |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
657 |
// Thus a public/stable exported entry point is the right solution, |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
658 |
// public here means public in linker semantics, and is exported only |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
659 |
// to the JDK, and is not intended to be a public API. |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
660 |
|
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
661 |
JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
662 |
const char* name)) |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
663 |
JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
664 |
|
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
665 |
// Java libraries should ensure that name is never null... |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
666 |
if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
667 |
// It's impossible to create this class; the name cannot fit |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
668 |
// into the constant pool. |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
669 |
return NULL; |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
670 |
} |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
671 |
|
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
672 |
symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
673 |
klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
674 |
if (k == NULL) { |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
675 |
return NULL; |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
676 |
} |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
677 |
|
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
678 |
if (TraceClassResolution) { |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
679 |
trace_class_resolution(k); |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
680 |
} |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
681 |
return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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parents:
3575
diff
changeset
|
682 |
JVM_END |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
683 |
|
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
684 |
JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
685 |
jboolean init, jobject loader, |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
686 |
jboolean throwError)) |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
687 |
JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
688 |
throwError ? "error" : "exception"); |
1420 | 689 |
// Java libraries should ensure that name is never null... |
690 |
if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { |
|
691 |
// It's impossible to create this class; the name cannot fit |
|
692 |
// into the constant pool. |
|
693 |
if (throwError) { |
|
694 |
THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); |
|
695 |
} else { |
|
696 |
THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); |
|
697 |
} |
|
698 |
} |
|
699 |
symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); |
|
700 |
Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
|
701 |
jclass result = find_class_from_class_loader(env, h_name, init, h_loader, |
|
702 |
Handle(), throwError, THREAD); |
|
703 |
||
704 |
if (TraceClassResolution && result != NULL) { |
|
705 |
trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
|
706 |
} |
|
707 |
return result; |
|
1 | 708 |
JVM_END |
709 |
||
710 |
||
711 |
JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, |
|
712 |
jboolean init, jclass from)) |
|
713 |
JVMWrapper2("JVM_FindClassFromClass %s", name); |
|
714 |
if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { |
|
715 |
// It's impossible to create this class; the name cannot fit |
|
716 |
// into the constant pool. |
|
717 |
THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); |
|
718 |
} |
|
719 |
symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); |
|
720 |
oop from_class_oop = JNIHandles::resolve(from); |
|
721 |
klassOop from_class = (from_class_oop == NULL) |
|
722 |
? (klassOop)NULL |
|
723 |
: java_lang_Class::as_klassOop(from_class_oop); |
|
724 |
oop class_loader = NULL; |
|
725 |
oop protection_domain = NULL; |
|
726 |
if (from_class != NULL) { |
|
727 |
class_loader = Klass::cast(from_class)->class_loader(); |
|
728 |
protection_domain = Klass::cast(from_class)->protection_domain(); |
|
729 |
} |
|
730 |
Handle h_loader(THREAD, class_loader); |
|
731 |
Handle h_prot (THREAD, protection_domain); |
|
732 |
jclass result = find_class_from_class_loader(env, h_name, init, h_loader, |
|
733 |
h_prot, true, thread); |
|
734 |
||
735 |
if (TraceClassResolution && result != NULL) { |
|
736 |
// this function is generally only used for class loading during verification. |
|
737 |
ResourceMark rm; |
|
738 |
oop from_mirror = JNIHandles::resolve_non_null(from); |
|
739 |
klassOop from_class = java_lang_Class::as_klassOop(from_mirror); |
|
740 |
const char * from_name = Klass::cast(from_class)->external_name(); |
|
741 |
||
742 |
oop mirror = JNIHandles::resolve_non_null(result); |
|
743 |
klassOop to_class = java_lang_Class::as_klassOop(mirror); |
|
744 |
const char * to = Klass::cast(to_class)->external_name(); |
|
745 |
tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
|
746 |
} |
|
747 |
||
748 |
return result; |
|
749 |
JVM_END |
|
750 |
||
751 |
static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { |
|
752 |
if (loader.is_null()) { |
|
753 |
return; |
|
754 |
} |
|
755 |
||
756 |
// check whether the current caller thread holds the lock or not. |
|
757 |
// If not, increment the corresponding counter |
|
758 |
if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != |
|
759 |
ObjectSynchronizer::owner_self) { |
|
760 |
counter->inc(); |
|
761 |
} |
|
762 |
} |
|
763 |
||
764 |
// common code for JVM_DefineClass() and JVM_DefineClassWithSource() |
|
765 |
static jclass jvm_define_class_common(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source, TRAPS) { |
|
1550
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1420
diff
changeset
|
766 |
if (source == NULL) source = "__JVM_DefineClass__"; |
1 | 767 |
|
3575
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
768 |
assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
769 |
JavaThread* jt = (JavaThread*) THREAD; |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
770 |
|
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
771 |
PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
772 |
ClassLoader::perf_define_appclass_selftime(), |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
773 |
ClassLoader::perf_define_appclasses(), |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
774 |
jt->get_thread_stat()->perf_recursion_counts_addr(), |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
775 |
jt->get_thread_stat()->perf_timers_addr(), |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
776 |
PerfClassTraceTime::DEFINE_CLASS); |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
777 |
|
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
778 |
if (UsePerfData) { |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
779 |
ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
780 |
} |
224791e7ecab
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
2570
diff
changeset
|
781 |
|
1 | 782 |
// Since exceptions can be thrown, class initialization can take place |
783 |
// if name is NULL no check for class name in .class stream has to be made. |
|
784 |
symbolHandle class_name; |
|
785 |
if (name != NULL) { |
|
786 |
const int str_len = (int)strlen(name); |
|
787 |
if (str_len > symbolOopDesc::max_length()) { |
|
788 |
// It's impossible to create this class; the name cannot fit |
|
789 |
// into the constant pool. |
|
790 |
THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); |
|
791 |
} |
|
792 |
class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL); |
|
793 |
} |
|
794 |
||
795 |
ResourceMark rm(THREAD); |
|
796 |
ClassFileStream st((u1*) buf, len, (char *)source); |
|
797 |
Handle class_loader (THREAD, JNIHandles::resolve(loader)); |
|
798 |
if (UsePerfData) { |
|
799 |
is_lock_held_by_thread(class_loader, |
|
800 |
ClassLoader::sync_JVMDefineClassLockFreeCounter(), |
|
801 |
THREAD); |
|
802 |
} |
|
803 |
Handle protection_domain (THREAD, JNIHandles::resolve(pd)); |
|
804 |
klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
|
805 |
protection_domain, &st, |
|
806 |
CHECK_NULL); |
|
807 |
||
808 |
if (TraceClassResolution && k != NULL) { |
|
809 |
trace_class_resolution(k); |
|
810 |
} |
|
811 |
||
812 |
return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
|
813 |
} |
|
814 |
||
815 |
||
816 |
JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) |
|
817 |
JVMWrapper2("JVM_DefineClass %s", name); |
|
818 |
||
1550
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1420
diff
changeset
|
819 |
return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, THREAD); |
1 | 820 |
JVM_END |
821 |
||
822 |
||
823 |
JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) |
|
824 |
JVMWrapper2("JVM_DefineClassWithSource %s", name); |
|
825 |
||
826 |
return jvm_define_class_common(env, name, loader, buf, len, pd, source, THREAD); |
|
827 |
JVM_END |
|
828 |
||
829 |
||
830 |
JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) |
|
831 |
JVMWrapper("JVM_FindLoadedClass"); |
|
832 |
ResourceMark rm(THREAD); |
|
833 |
||
834 |
Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); |
|
835 |
Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); |
|
836 |
||
837 |
const char* str = java_lang_String::as_utf8_string(string()); |
|
838 |
// Sanity check, don't expect null |
|
839 |
if (str == NULL) return NULL; |
|
840 |
||
841 |
const int str_len = (int)strlen(str); |
|
842 |
if (str_len > symbolOopDesc::max_length()) { |
|
843 |
// It's impossible to create this class; the name cannot fit |
|
844 |
// into the constant pool. |
|
845 |
return NULL; |
|
846 |
} |
|
847 |
symbolHandle klass_name = oopFactory::new_symbol_handle(str, str_len,CHECK_NULL); |
|
848 |
||
849 |
// Security Note: |
|
850 |
// The Java level wrapper will perform the necessary security check allowing |
|
851 |
// us to pass the NULL as the initiating class loader. |
|
852 |
Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
|
853 |
if (UsePerfData) { |
|
854 |
is_lock_held_by_thread(h_loader, |
|
855 |
ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), |
|
856 |
THREAD); |
|
857 |
} |
|
858 |
||
859 |
klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, |
|
860 |
h_loader, |
|
861 |
Handle(), |
|
862 |
CHECK_NULL); |
|
863 |
||
864 |
return (k == NULL) ? NULL : |
|
865 |
(jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
|
866 |
JVM_END |
|
867 |
||
868 |
||
869 |
// Reflection support ////////////////////////////////////////////////////////////////////////////// |
|
870 |
||
871 |
JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) |
|
872 |
assert (cls != NULL, "illegal class"); |
|
873 |
JVMWrapper("JVM_GetClassName"); |
|
874 |
JvmtiVMObjectAllocEventCollector oam; |
|
875 |
ResourceMark rm(THREAD); |
|
876 |
const char* name; |
|
877 |
if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
878 |
name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); |
|
879 |
} else { |
|
880 |
// Consider caching interned string in Klass |
|
881 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); |
|
882 |
assert(k->is_klass(), "just checking"); |
|
883 |
name = Klass::cast(k)->external_name(); |
|
884 |
} |
|
885 |
oop result = StringTable::intern((char*) name, CHECK_NULL); |
|
886 |
return (jstring) JNIHandles::make_local(env, result); |
|
887 |
JVM_END |
|
888 |
||
889 |
||
890 |
JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) |
|
891 |
JVMWrapper("JVM_GetClassInterfaces"); |
|
892 |
JvmtiVMObjectAllocEventCollector oam; |
|
893 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
894 |
||
895 |
// Special handling for primitive objects |
|
896 |
if (java_lang_Class::is_primitive(mirror)) { |
|
897 |
// Primitive objects does not have any interfaces |
|
898 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); |
|
899 |
return (jobjectArray) JNIHandles::make_local(env, r); |
|
900 |
} |
|
901 |
||
902 |
KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); |
|
903 |
// Figure size of result array |
|
904 |
int size; |
|
905 |
if (klass->oop_is_instance()) { |
|
906 |
size = instanceKlass::cast(klass())->local_interfaces()->length(); |
|
907 |
} else { |
|
908 |
assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); |
|
909 |
size = 2; |
|
910 |
} |
|
911 |
||
912 |
// Allocate result array |
|
913 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), size, CHECK_NULL); |
|
914 |
objArrayHandle result (THREAD, r); |
|
915 |
// Fill in result |
|
916 |
if (klass->oop_is_instance()) { |
|
917 |
// Regular instance klass, fill in all local interfaces |
|
918 |
for (int index = 0; index < size; index++) { |
|
919 |
klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); |
|
920 |
result->obj_at_put(index, Klass::cast(k)->java_mirror()); |
|
921 |
} |
|
922 |
} else { |
|
923 |
// All arrays implement java.lang.Cloneable and java.io.Serializable |
|
924 |
result->obj_at_put(0, Klass::cast(SystemDictionary::cloneable_klass())->java_mirror()); |
|
925 |
result->obj_at_put(1, Klass::cast(SystemDictionary::serializable_klass())->java_mirror()); |
|
926 |
} |
|
927 |
return (jobjectArray) JNIHandles::make_local(env, result()); |
|
928 |
JVM_END |
|
929 |
||
930 |
||
931 |
JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) |
|
932 |
JVMWrapper("JVM_GetClassLoader"); |
|
933 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { |
|
934 |
return NULL; |
|
935 |
} |
|
936 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
937 |
oop loader = Klass::cast(k)->class_loader(); |
|
938 |
return JNIHandles::make_local(env, loader); |
|
939 |
JVM_END |
|
940 |
||
941 |
||
942 |
JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) |
|
943 |
JVMWrapper("JVM_IsInterface"); |
|
944 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
945 |
if (java_lang_Class::is_primitive(mirror)) { |
|
946 |
return JNI_FALSE; |
|
947 |
} |
|
948 |
klassOop k = java_lang_Class::as_klassOop(mirror); |
|
949 |
jboolean result = Klass::cast(k)->is_interface(); |
|
950 |
assert(!result || Klass::cast(k)->oop_is_instance(), |
|
951 |
"all interfaces are instance types"); |
|
952 |
// The compiler intrinsic for isInterface tests the |
|
953 |
// Klass::_access_flags bits in the same way. |
|
954 |
return result; |
|
955 |
JVM_END |
|
956 |
||
957 |
||
958 |
JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) |
|
959 |
JVMWrapper("JVM_GetClassSigners"); |
|
960 |
JvmtiVMObjectAllocEventCollector oam; |
|
961 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { |
|
962 |
// There are no signers for primitive types |
|
963 |
return NULL; |
|
964 |
} |
|
965 |
||
966 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
967 |
objArrayOop signers = NULL; |
|
968 |
if (Klass::cast(k)->oop_is_instance()) { |
|
969 |
signers = instanceKlass::cast(k)->signers(); |
|
970 |
} |
|
971 |
||
972 |
// If there are no signers set in the class, or if the class |
|
973 |
// is an array, return NULL. |
|
974 |
if (signers == NULL) return NULL; |
|
975 |
||
976 |
// copy of the signers array |
|
977 |
klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); |
|
978 |
objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
|
979 |
for (int index = 0; index < signers->length(); index++) { |
|
980 |
signers_copy->obj_at_put(index, signers->obj_at(index)); |
|
981 |
} |
|
982 |
||
983 |
// return the copy |
|
984 |
return (jobjectArray) JNIHandles::make_local(env, signers_copy); |
|
985 |
JVM_END |
|
986 |
||
987 |
||
988 |
JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) |
|
989 |
JVMWrapper("JVM_SetClassSigners"); |
|
990 |
if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { |
|
991 |
// This call is ignored for primitive types and arrays. |
|
992 |
// Signers are only set once, ClassLoader.java, and thus shouldn't |
|
993 |
// be called with an array. Only the bootstrap loader creates arrays. |
|
994 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
995 |
if (Klass::cast(k)->oop_is_instance()) { |
|
996 |
instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
|
997 |
} |
|
998 |
} |
|
999 |
JVM_END |
|
1000 |
||
1001 |
||
1002 |
JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) |
|
1003 |
JVMWrapper("JVM_GetProtectionDomain"); |
|
1004 |
if (JNIHandles::resolve(cls) == NULL) { |
|
1005 |
THROW_(vmSymbols::java_lang_NullPointerException(), NULL); |
|
1006 |
} |
|
1007 |
||
1008 |
if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
1009 |
// Primitive types does not have a protection domain. |
|
1010 |
return NULL; |
|
1011 |
} |
|
1012 |
||
1013 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); |
|
1014 |
return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); |
|
1015 |
JVM_END |
|
1016 |
||
1017 |
||
1018 |
// Obsolete since 1.2 (Class.setProtectionDomain removed), although |
|
1019 |
// still defined in core libraries as of 1.5. |
|
1020 |
JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) |
|
1021 |
JVMWrapper("JVM_SetProtectionDomain"); |
|
1022 |
if (JNIHandles::resolve(cls) == NULL) { |
|
1023 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
1024 |
} |
|
1025 |
if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
1026 |
// Call is ignored for primitive types |
|
1027 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); |
|
1028 |
||
1029 |
// cls won't be an array, as this called only from ClassLoader.defineClass |
|
1030 |
if (Klass::cast(k)->oop_is_instance()) { |
|
1031 |
oop pd = JNIHandles::resolve(protection_domain); |
|
1032 |
assert(pd == NULL || pd->is_oop(), "just checking"); |
|
1033 |
instanceKlass::cast(k)->set_protection_domain(pd); |
|
1034 |
} |
|
1035 |
} |
|
1036 |
JVM_END |
|
1037 |
||
1038 |
||
1039 |
JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) |
|
1040 |
JVMWrapper("JVM_DoPrivileged"); |
|
1041 |
||
1042 |
if (action == NULL) { |
|
1043 |
THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); |
|
1044 |
} |
|
1045 |
||
1046 |
// Stack allocated list of privileged stack elements |
|
1047 |
PrivilegedElement pi; |
|
1048 |
||
1049 |
// Check that action object understands "Object run()" |
|
1050 |
Handle object (THREAD, JNIHandles::resolve(action)); |
|
1051 |
||
1052 |
// get run() method |
|
1053 |
methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( |
|
1054 |
vmSymbols::run_method_name(), |
|
1055 |
vmSymbols::void_object_signature()); |
|
1056 |
methodHandle m (THREAD, m_oop); |
|
1057 |
if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { |
|
1058 |
THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
|
1059 |
} |
|
1060 |
||
1061 |
// Compute the frame initiating the do privileged operation and setup the privileged stack |
|
1062 |
vframeStream vfst(thread); |
|
1063 |
vfst.security_get_caller_frame(1); |
|
1064 |
||
1065 |
if (!vfst.at_end()) { |
|
1066 |
pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); |
|
1067 |
thread->set_privileged_stack_top(&pi); |
|
1068 |
} |
|
1069 |
||
1070 |
||
1071 |
// invoke the Object run() in the action object. We cannot use call_interface here, since the static type |
|
1072 |
// is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction |
|
1073 |
Handle pending_exception; |
|
1074 |
JavaValue result(T_OBJECT); |
|
1075 |
JavaCallArguments args(object); |
|
1076 |
JavaCalls::call(&result, m, &args, THREAD); |
|
1077 |
||
1078 |
// done with action, remove ourselves from the list |
|
1079 |
if (!vfst.at_end()) { |
|
1080 |
assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); |
|
1081 |
thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); |
|
1082 |
} |
|
1083 |
||
1084 |
if (HAS_PENDING_EXCEPTION) { |
|
1085 |
pending_exception = Handle(THREAD, PENDING_EXCEPTION); |
|
1086 |
CLEAR_PENDING_EXCEPTION; |
|
1087 |
||
1088 |
if ( pending_exception->is_a(SystemDictionary::exception_klass()) && |
|
1089 |
!pending_exception->is_a(SystemDictionary::runtime_exception_klass())) { |
|
1090 |
// Throw a java.security.PrivilegedActionException(Exception e) exception |
|
1091 |
JavaCallArguments args(pending_exception); |
|
1092 |
THROW_ARG_0(vmSymbolHandles::java_security_PrivilegedActionException(), |
|
1093 |
vmSymbolHandles::exception_void_signature(), |
|
1094 |
&args); |
|
1095 |
} |
|
1096 |
} |
|
1097 |
||
1098 |
if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); |
|
1099 |
return JNIHandles::make_local(env, (oop) result.get_jobject()); |
|
1100 |
JVM_END |
|
1101 |
||
1102 |
||
1103 |
// Returns the inherited_access_control_context field of the running thread. |
|
1104 |
JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) |
|
1105 |
JVMWrapper("JVM_GetInheritedAccessControlContext"); |
|
1106 |
oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); |
|
1107 |
return JNIHandles::make_local(env, result); |
|
1108 |
JVM_END |
|
1109 |
||
1110 |
class RegisterArrayForGC { |
|
1111 |
private: |
|
1112 |
JavaThread *_thread; |
|
1113 |
public: |
|
1114 |
RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { |
|
1115 |
_thread = thread; |
|
1116 |
_thread->register_array_for_gc(array); |
|
1117 |
} |
|
1118 |
||
1119 |
~RegisterArrayForGC() { |
|
1120 |
_thread->register_array_for_gc(NULL); |
|
1121 |
} |
|
1122 |
}; |
|
1123 |
||
1124 |
||
1125 |
JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) |
|
1126 |
JVMWrapper("JVM_GetStackAccessControlContext"); |
|
1127 |
if (!UsePrivilegedStack) return NULL; |
|
1128 |
||
1129 |
ResourceMark rm(THREAD); |
|
1130 |
GrowableArray<oop>* local_array = new GrowableArray<oop>(12); |
|
1131 |
JvmtiVMObjectAllocEventCollector oam; |
|
1132 |
||
1133 |
// count the protection domains on the execution stack. We collapse |
|
1134 |
// duplicate consecutive protection domains into a single one, as |
|
1135 |
// well as stopping when we hit a privileged frame. |
|
1136 |
||
1137 |
// Use vframeStream to iterate through Java frames |
|
1138 |
vframeStream vfst(thread); |
|
1139 |
||
1140 |
oop previous_protection_domain = NULL; |
|
1141 |
Handle privileged_context(thread, NULL); |
|
1142 |
bool is_privileged = false; |
|
1143 |
oop protection_domain = NULL; |
|
1144 |
||
1145 |
for(; !vfst.at_end(); vfst.next()) { |
|
1146 |
// get method of frame |
|
1147 |
methodOop method = vfst.method(); |
|
1148 |
intptr_t* frame_id = vfst.frame_id(); |
|
1149 |
||
1150 |
// check the privileged frames to see if we have a match |
|
1151 |
if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { |
|
1152 |
// this frame is privileged |
|
1153 |
is_privileged = true; |
|
1154 |
privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); |
|
1155 |
protection_domain = thread->privileged_stack_top()->protection_domain(); |
|
1156 |
} else { |
|
1157 |
protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); |
|
1158 |
} |
|
1159 |
||
1160 |
if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { |
|
1161 |
local_array->push(protection_domain); |
|
1162 |
previous_protection_domain = protection_domain; |
|
1163 |
} |
|
1164 |
||
1165 |
if (is_privileged) break; |
|
1166 |
} |
|
1167 |
||
1168 |
||
1169 |
// either all the domains on the stack were system domains, or |
|
1170 |
// we had a privileged system domain |
|
1171 |
if (local_array->is_empty()) { |
|
1172 |
if (is_privileged && privileged_context.is_null()) return NULL; |
|
1173 |
||
1174 |
oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); |
|
1175 |
return JNIHandles::make_local(env, result); |
|
1176 |
} |
|
1177 |
||
1178 |
// the resource area must be registered in case of a gc |
|
1179 |
RegisterArrayForGC ragc(thread, local_array); |
|
1180 |
objArrayOop context = oopFactory::new_objArray(SystemDictionary::protectionDomain_klass(), |
|
1181 |
local_array->length(), CHECK_NULL); |
|
1182 |
objArrayHandle h_context(thread, context); |
|
1183 |
for (int index = 0; index < local_array->length(); index++) { |
|
1184 |
h_context->obj_at_put(index, local_array->at(index)); |
|
1185 |
} |
|
1186 |
||
1187 |
oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); |
|
1188 |
||
1189 |
return JNIHandles::make_local(env, result); |
|
1190 |
JVM_END |
|
1191 |
||
1192 |
||
1193 |
JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) |
|
1194 |
JVMWrapper("JVM_IsArrayClass"); |
|
1195 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
1196 |
return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; |
|
1197 |
JVM_END |
|
1198 |
||
1199 |
||
1200 |
JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) |
|
1201 |
JVMWrapper("JVM_IsPrimitiveClass"); |
|
1202 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
1203 |
return (jboolean) java_lang_Class::is_primitive(mirror); |
|
1204 |
JVM_END |
|
1205 |
||
1206 |
||
1207 |
JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) |
|
1208 |
JVMWrapper("JVM_GetComponentType"); |
|
1209 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
1210 |
oop result = Reflection::array_component_type(mirror, CHECK_NULL); |
|
1211 |
return (jclass) JNIHandles::make_local(env, result); |
|
1212 |
JVM_END |
|
1213 |
||
1214 |
||
1215 |
JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) |
|
1216 |
JVMWrapper("JVM_GetClassModifiers"); |
|
1217 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { |
|
1218 |
// Primitive type |
|
1219 |
return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; |
|
1220 |
} |
|
1221 |
||
1222 |
Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); |
|
1223 |
debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
|
1224 |
assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); |
|
1225 |
return k->modifier_flags(); |
|
1226 |
JVM_END |
|
1227 |
||
1228 |
||
1229 |
// Inner class reflection /////////////////////////////////////////////////////////////////////////////// |
|
1230 |
||
1231 |
JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) |
|
1232 |
const int inner_class_info_index = 0; |
|
1233 |
const int outer_class_info_index = 1; |
|
1234 |
||
1235 |
JvmtiVMObjectAllocEventCollector oam; |
|
1236 |
// ofClass is a reference to a java_lang_Class object. The mirror object |
|
1237 |
// of an instanceKlass |
|
1238 |
||
1239 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || |
|
1240 |
! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { |
|
1241 |
oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); |
|
1242 |
return (jobjectArray)JNIHandles::make_local(env, result); |
|
1243 |
} |
|
1244 |
||
1245 |
instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); |
|
1246 |
||
1247 |
if (k->inner_classes()->length() == 0) { |
|
1248 |
// Neither an inner nor outer class |
|
1249 |
oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); |
|
1250 |
return (jobjectArray)JNIHandles::make_local(env, result); |
|
1251 |
} |
|
1252 |
||
1253 |
// find inner class info |
|
1254 |
typeArrayHandle icls(thread, k->inner_classes()); |
|
1255 |
constantPoolHandle cp(thread, k->constants()); |
|
1256 |
int length = icls->length(); |
|
1257 |
||
1258 |
// Allocate temp. result array |
|
1259 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), length/4, CHECK_NULL); |
|
1260 |
objArrayHandle result (THREAD, r); |
|
1261 |
int members = 0; |
|
1262 |
||
1263 |
for(int i = 0; i < length; i += 4) { |
|
1264 |
int ioff = icls->ushort_at(i + inner_class_info_index); |
|
1265 |
int ooff = icls->ushort_at(i + outer_class_info_index); |
|
1266 |
||
1267 |
if (ioff != 0 && ooff != 0) { |
|
1268 |
// Check to see if the name matches the class we're looking for |
|
1269 |
// before attempting to find the class. |
|
1270 |
if (cp->klass_name_at_matches(k, ooff)) { |
|
1271 |
klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); |
|
1272 |
if (outer_klass == k()) { |
|
1273 |
klassOop ik = cp->klass_at(ioff, CHECK_NULL); |
|
1274 |
instanceKlassHandle inner_klass (THREAD, ik); |
|
1275 |
||
1276 |
// Throws an exception if outer klass has not declared k as |
|
1277 |
// an inner klass |
|
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1278 |
Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
1 | 1279 |
|
1280 |
result->obj_at_put(members, inner_klass->java_mirror()); |
|
1281 |
members++; |
|
1282 |
} |
|
1283 |
} |
|
1284 |
} |
|
1285 |
} |
|
1286 |
||
1287 |
if (members != length) { |
|
1288 |
// Return array of right length |
|
1289 |
objArrayOop res = oopFactory::new_objArray(SystemDictionary::class_klass(), members, CHECK_NULL); |
|
1290 |
for(int i = 0; i < members; i++) { |
|
1291 |
res->obj_at_put(i, result->obj_at(i)); |
|
1292 |
} |
|
1293 |
return (jobjectArray)JNIHandles::make_local(env, res); |
|
1294 |
} |
|
1295 |
||
1296 |
return (jobjectArray)JNIHandles::make_local(env, result()); |
|
1297 |
JVM_END |
|
1298 |
||
1299 |
||
1300 |
JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) |
|
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1301 |
{ |
1 | 1302 |
// ofClass is a reference to a java_lang_Class object. |
1303 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || |
|
1304 |
! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { |
|
1305 |
return NULL; |
|
1306 |
} |
|
1307 |
||
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1308 |
symbolOop simple_name = NULL; |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1309 |
klassOop outer_klass |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1310 |
= instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1311 |
)->compute_enclosing_class(simple_name, CHECK_NULL); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1312 |
if (outer_klass == NULL) return NULL; // already a top-level class |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1313 |
if (simple_name == NULL) return NULL; // an anonymous class (inside a method) |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1314 |
return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1315 |
} |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1316 |
JVM_END |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1317 |
|
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1318 |
// should be in instanceKlass.cpp, but is here for historical reasons |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1319 |
klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1320 |
symbolOop& simple_name_result, TRAPS) { |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1321 |
Thread* thread = THREAD; |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1322 |
const int inner_class_info_index = inner_class_inner_class_info_offset; |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1323 |
const int outer_class_info_index = inner_class_outer_class_info_offset; |
1 | 1324 |
|
1325 |
if (k->inner_classes()->length() == 0) { |
|
1326 |
// No inner class info => no declaring class |
|
1327 |
return NULL; |
|
1328 |
} |
|
1329 |
||
1330 |
typeArrayHandle i_icls(thread, k->inner_classes()); |
|
1331 |
constantPoolHandle i_cp(thread, k->constants()); |
|
1332 |
int i_length = i_icls->length(); |
|
1333 |
||
1334 |
bool found = false; |
|
1335 |
klassOop ok; |
|
1336 |
instanceKlassHandle outer_klass; |
|
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1337 |
bool inner_is_member = false; |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1338 |
int simple_name_index = 0; |
1 | 1339 |
|
1340 |
// Find inner_klass attribute |
|
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1341 |
for (int i = 0; i < i_length && !found; i += inner_class_next_offset) { |
1 | 1342 |
int ioff = i_icls->ushort_at(i + inner_class_info_index); |
1343 |
int ooff = i_icls->ushort_at(i + outer_class_info_index); |
|
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1344 |
int noff = i_icls->ushort_at(i + inner_class_inner_name_offset); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1345 |
if (ioff != 0) { |
1 | 1346 |
// Check to see if the name matches the class we're looking for |
1347 |
// before attempting to find the class. |
|
1348 |
if (i_cp->klass_name_at_matches(k, ioff)) { |
|
1349 |
klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
|
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1350 |
found = (k() == inner_klass); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1351 |
if (found && ooff != 0) { |
1 | 1352 |
ok = i_cp->klass_at(ooff, CHECK_NULL); |
1353 |
outer_klass = instanceKlassHandle(thread, ok); |
|
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1354 |
simple_name_index = noff; |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1355 |
inner_is_member = true; |
1 | 1356 |
} |
1357 |
} |
|
1358 |
} |
|
1359 |
} |
|
1360 |
||
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1361 |
if (found && outer_klass.is_null()) { |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1362 |
// It may be anonymous; try for that. |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1363 |
int encl_method_class_idx = k->enclosing_method_class_index(); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1364 |
if (encl_method_class_idx != 0) { |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1365 |
ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1366 |
outer_klass = instanceKlassHandle(thread, ok); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1367 |
inner_is_member = false; |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1368 |
} |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1369 |
} |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1370 |
|
1 | 1371 |
// If no inner class attribute found for this class. |
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1372 |
if (outer_klass.is_null()) return NULL; |
1 | 1373 |
|
1374 |
// Throws an exception if outer klass has not declared k as an inner klass |
|
2332
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1375 |
// We need evidence that each klass knows about the other, or else |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1376 |
// the system could allow a spoof of an inner class to gain access rights. |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1377 |
Reflection::check_for_inner_class(outer_klass, k, inner_is_member, CHECK_NULL); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1378 |
|
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1379 |
simple_name_result = (inner_is_member ? i_cp->symbol_at(simple_name_index) : symbolOop(NULL)); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1380 |
return outer_klass(); |
5c7b6f4ce0a1
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
2105
diff
changeset
|
1381 |
} |
1 | 1382 |
|
1383 |
JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) |
|
1384 |
assert (cls != NULL, "illegal class"); |
|
1385 |
JVMWrapper("JVM_GetClassSignature"); |
|
1386 |
JvmtiVMObjectAllocEventCollector oam; |
|
1387 |
ResourceMark rm(THREAD); |
|
1388 |
// Return null for arrays and primatives |
|
1389 |
if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
1390 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); |
|
1391 |
if (Klass::cast(k)->oop_is_instance()) { |
|
1392 |
symbolHandle sym = symbolHandle(THREAD, instanceKlass::cast(k)->generic_signature()); |
|
1393 |
if (sym.is_null()) return NULL; |
|
1394 |
Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
|
1395 |
return (jstring) JNIHandles::make_local(env, str()); |
|
1396 |
} |
|
1397 |
} |
|
1398 |
return NULL; |
|
1399 |
JVM_END |
|
1400 |
||
1401 |
||
1402 |
JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) |
|
1403 |
assert (cls != NULL, "illegal class"); |
|
1404 |
JVMWrapper("JVM_GetClassAnnotations"); |
|
1405 |
ResourceMark rm(THREAD); |
|
1406 |
// Return null for arrays and primitives |
|
1407 |
if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
1408 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); |
|
1409 |
if (Klass::cast(k)->oop_is_instance()) { |
|
1410 |
return (jbyteArray) JNIHandles::make_local(env, |
|
1411 |
instanceKlass::cast(k)->class_annotations()); |
|
1412 |
} |
|
1413 |
} |
|
1414 |
return NULL; |
|
1415 |
JVM_END |
|
1416 |
||
1417 |
||
1418 |
JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
1419 |
assert(field != NULL, "illegal field"); |
|
1420 |
JVMWrapper("JVM_GetFieldAnnotations"); |
|
1421 |
||
1422 |
// some of this code was adapted from from jni_FromReflectedField |
|
1423 |
||
1424 |
// field is a handle to a java.lang.reflect.Field object |
|
1425 |
oop reflected = JNIHandles::resolve_non_null(field); |
|
1426 |
oop mirror = java_lang_reflect_Field::clazz(reflected); |
|
1427 |
klassOop k = java_lang_Class::as_klassOop(mirror); |
|
1428 |
int slot = java_lang_reflect_Field::slot(reflected); |
|
1429 |
int modifiers = java_lang_reflect_Field::modifiers(reflected); |
|
1430 |
||
1431 |
fieldDescriptor fd; |
|
1432 |
KlassHandle kh(THREAD, k); |
|
1433 |
intptr_t offset = instanceKlass::cast(kh())->offset_from_fields(slot); |
|
1434 |
||
1435 |
if (modifiers & JVM_ACC_STATIC) { |
|
1436 |
// for static fields we only look in the current class |
|
1437 |
if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, |
|
1438 |
true, &fd)) { |
|
1439 |
assert(false, "cannot find static field"); |
|
1440 |
return NULL; // robustness |
|
1441 |
} |
|
1442 |
} else { |
|
1443 |
// for instance fields we start with the current class and work |
|
1444 |
// our way up through the superclass chain |
|
1445 |
if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, |
|
1446 |
&fd)) { |
|
1447 |
assert(false, "cannot find instance field"); |
|
1448 |
return NULL; // robustness |
|
1449 |
} |
|
1450 |
} |
|
1451 |
||
1452 |
return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); |
|
1453 |
JVM_END |
|
1454 |
||
1455 |
||
1456 |
static methodOop jvm_get_method_common(jobject method, TRAPS) { |
|
1457 |
// some of this code was adapted from from jni_FromReflectedMethod |
|
1458 |
||
1459 |
oop reflected = JNIHandles::resolve_non_null(method); |
|
1460 |
oop mirror = NULL; |
|
1461 |
int slot = 0; |
|
1462 |
||
1463 |
if (reflected->klass() == SystemDictionary::reflect_constructor_klass()) { |
|
1464 |
mirror = java_lang_reflect_Constructor::clazz(reflected); |
|
1465 |
slot = java_lang_reflect_Constructor::slot(reflected); |
|
1466 |
} else { |
|
1467 |
assert(reflected->klass() == SystemDictionary::reflect_method_klass(), |
|
1468 |
"wrong type"); |
|
1469 |
mirror = java_lang_reflect_Method::clazz(reflected); |
|
1470 |
slot = java_lang_reflect_Method::slot(reflected); |
|
1471 |
} |
|
1472 |
klassOop k = java_lang_Class::as_klassOop(mirror); |
|
1473 |
||
1474 |
KlassHandle kh(THREAD, k); |
|
1475 |
methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); |
|
1476 |
if (m == NULL) { |
|
1477 |
assert(false, "cannot find method"); |
|
1478 |
return NULL; // robustness |
|
1479 |
} |
|
1480 |
||
1481 |
return m; |
|
1482 |
} |
|
1483 |
||
1484 |
||
1485 |
JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) |
|
1486 |
JVMWrapper("JVM_GetMethodAnnotations"); |
|
1487 |
||
1488 |
// method is a handle to a java.lang.reflect.Method object |
|
1489 |
methodOop m = jvm_get_method_common(method, CHECK_NULL); |
|
1490 |
return (jbyteArray) JNIHandles::make_local(env, m->annotations()); |
|
1491 |
JVM_END |
|
1492 |
||
1493 |
||
1494 |
JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) |
|
1495 |
JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); |
|
1496 |
||
1497 |
// method is a handle to a java.lang.reflect.Method object |
|
1498 |
methodOop m = jvm_get_method_common(method, CHECK_NULL); |
|
1499 |
return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); |
|
1500 |
JVM_END |
|
1501 |
||
1502 |
||
1503 |
JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) |
|
1504 |
JVMWrapper("JVM_GetMethodParameterAnnotations"); |
|
1505 |
||
1506 |
// method is a handle to a java.lang.reflect.Method object |
|
1507 |
methodOop m = jvm_get_method_common(method, CHECK_NULL); |
|
1508 |
return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); |
|
1509 |
JVM_END |
|
1510 |
||
1511 |
||
1512 |
// New (JDK 1.4) reflection implementation ///////////////////////////////////// |
|
1513 |
||
1514 |
JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
|
1515 |
{ |
|
1516 |
JVMWrapper("JVM_GetClassDeclaredFields"); |
|
1517 |
JvmtiVMObjectAllocEventCollector oam; |
|
1518 |
||
1519 |
// Exclude primitive types and array types |
|
1520 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || |
|
1521 |
Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { |
|
1522 |
// Return empty array |
|
1523 |
oop res = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), 0, CHECK_NULL); |
|
1524 |
return (jobjectArray) JNIHandles::make_local(env, res); |
|
1525 |
} |
|
1526 |
||
1527 |
instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); |
|
1528 |
constantPoolHandle cp(THREAD, k->constants()); |
|
1529 |
||
1530 |
// Ensure class is linked |
|
1531 |
k->link_class(CHECK_NULL); |
|
1532 |
||
1533 |
typeArrayHandle fields(THREAD, k->fields()); |
|
1534 |
int fields_len = fields->length(); |
|
1535 |
||
1536 |
// 4496456 We need to filter out java.lang.Throwable.backtrace |
|
1537 |
bool skip_backtrace = false; |
|
1538 |
||
1539 |
// Allocate result |
|
1540 |
int num_fields; |
|
1541 |
||
1542 |
if (publicOnly) { |
|
1543 |
num_fields = 0; |
|
1544 |
for (int i = 0, j = 0; i < fields_len; i += instanceKlass::next_offset, j++) { |
|
1545 |
int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
|
1546 |
if (mods & JVM_ACC_PUBLIC) ++num_fields; |
|
1547 |
} |
|
1548 |
} else { |
|
1549 |
num_fields = fields_len / instanceKlass::next_offset; |
|
1550 |
||
1551 |
if (k() == SystemDictionary::throwable_klass()) { |
|
1552 |
num_fields--; |
|
1553 |
skip_backtrace = true; |
|
1554 |
} |
|
1555 |
} |
|
1556 |
||
1557 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), num_fields, CHECK_NULL); |
|
1558 |
objArrayHandle result (THREAD, r); |
|
1559 |
||
1560 |
int out_idx = 0; |
|
1561 |
fieldDescriptor fd; |
|
1562 |
for (int i = 0; i < fields_len; i += instanceKlass::next_offset) { |
|
1563 |
if (skip_backtrace) { |
|
1564 |
// 4496456 skip java.lang.Throwable.backtrace |
|
1565 |
int offset = k->offset_from_fields(i); |
|
1566 |
if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
|
1567 |
} |
|
1568 |
||
1569 |
int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
|
1570 |
if (!publicOnly || (mods & JVM_ACC_PUBLIC)) { |
|
1571 |
fd.initialize(k(), i); |
|
1572 |
oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
|
1573 |
result->obj_at_put(out_idx, field); |
|
1574 |
++out_idx; |
|
1575 |
} |
|
1576 |
} |
|
1577 |
assert(out_idx == num_fields, "just checking"); |
|
1578 |
return (jobjectArray) JNIHandles::make_local(env, result()); |
|
1579 |
} |
|
1580 |
JVM_END |
|
1581 |
||
1582 |
JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
|
1583 |
{ |
|
1584 |
JVMWrapper("JVM_GetClassDeclaredMethods"); |
|
1585 |
JvmtiVMObjectAllocEventCollector oam; |
|
1586 |
||
1587 |
// Exclude primitive types and array types |
|
1588 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) |
|
1589 |
|| Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { |
|
1590 |
// Return empty array |
|
1591 |
oop res = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), 0, CHECK_NULL); |
|
1592 |
return (jobjectArray) JNIHandles::make_local(env, res); |
|
1593 |
} |
|
1594 |
||
1595 |
instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); |
|
1596 |
||
1597 |
// Ensure class is linked |
|
1598 |
k->link_class(CHECK_NULL); |
|
1599 |
||
1600 |
objArrayHandle methods (THREAD, k->methods()); |
|
1601 |
int methods_length = methods->length(); |
|
1602 |
int num_methods = 0; |
|
1603 |
||
1604 |
int i; |
|
1605 |
for (i = 0; i < methods_length; i++) { |
|
1606 |
methodHandle method(THREAD, (methodOop) methods->obj_at(i)); |
|
1607 |
if (!method->is_initializer()) { |
|
1608 |
if (!publicOnly || method->is_public()) { |
|
1609 |
++num_methods; |
|
1610 |
} |
|
1611 |
} |
|
1612 |
} |
|
1613 |
||
1614 |
// Allocate result |
|
1615 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), num_methods, CHECK_NULL); |
|
1616 |
objArrayHandle result (THREAD, r); |
|
1617 |
||
1618 |
int out_idx = 0; |
|
1619 |
for (i = 0; i < methods_length; i++) { |
|
1620 |
methodHandle method(THREAD, (methodOop) methods->obj_at(i)); |
|
1621 |
if (!method->is_initializer()) { |
|
1622 |
if (!publicOnly || method->is_public()) { |
|
1623 |
oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
|
1624 |
result->obj_at_put(out_idx, m); |
|
1625 |
++out_idx; |
|
1626 |
} |
|
1627 |
} |
|
1628 |
} |
|
1629 |
assert(out_idx == num_methods, "just checking"); |
|
1630 |
return (jobjectArray) JNIHandles::make_local(env, result()); |
|
1631 |
} |
|
1632 |
JVM_END |
|
1633 |
||
1634 |
JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
|
1635 |
{ |
|
1636 |
JVMWrapper("JVM_GetClassDeclaredConstructors"); |
|
1637 |
JvmtiVMObjectAllocEventCollector oam; |
|
1638 |
||
1639 |
// Exclude primitive types and array types |
|
1640 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) |
|
1641 |
|| Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { |
|
1642 |
// Return empty array |
|
1643 |
oop res = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0 , CHECK_NULL); |
|
1644 |
return (jobjectArray) JNIHandles::make_local(env, res); |
|
1645 |
} |
|
1646 |
||
1647 |
instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); |
|
1648 |
||
1649 |
// Ensure class is linked |
|
1650 |
k->link_class(CHECK_NULL); |
|
1651 |
||
1652 |
objArrayHandle methods (THREAD, k->methods()); |
|
1653 |
int methods_length = methods->length(); |
|
1654 |
int num_constructors = 0; |
|
1655 |
||
1656 |
int i; |
|
1657 |
for (i = 0; i < methods_length; i++) { |
|
1658 |
methodHandle method(THREAD, (methodOop) methods->obj_at(i)); |
|
1659 |
if (method->is_initializer() && !method->is_static()) { |
|
1660 |
if (!publicOnly || method->is_public()) { |
|
1661 |
++num_constructors; |
|
1662 |
} |
|
1663 |
} |
|
1664 |
} |
|
1665 |
||
1666 |
// Allocate result |
|
1667 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), num_constructors, CHECK_NULL); |
|
1668 |
objArrayHandle result(THREAD, r); |
|
1669 |
||
1670 |
int out_idx = 0; |
|
1671 |
for (i = 0; i < methods_length; i++) { |
|
1672 |
methodHandle method(THREAD, (methodOop) methods->obj_at(i)); |
|
1673 |
if (method->is_initializer() && !method->is_static()) { |
|
1674 |
if (!publicOnly || method->is_public()) { |
|
1675 |
oop m = Reflection::new_constructor(method, CHECK_NULL); |
|
1676 |
result->obj_at_put(out_idx, m); |
|
1677 |
++out_idx; |
|
1678 |
} |
|
1679 |
} |
|
1680 |
} |
|
1681 |
assert(out_idx == num_constructors, "just checking"); |
|
1682 |
return (jobjectArray) JNIHandles::make_local(env, result()); |
|
1683 |
} |
|
1684 |
JVM_END |
|
1685 |
||
1686 |
JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) |
|
1687 |
{ |
|
1688 |
JVMWrapper("JVM_GetClassAccessFlags"); |
|
1689 |
if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { |
|
1690 |
// Primitive type |
|
1691 |
return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; |
|
1692 |
} |
|
1693 |
||
1694 |
Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); |
|
1695 |
return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
|
1696 |
} |
|
1697 |
JVM_END |
|
1698 |
||
1699 |
||
1700 |
// Constant pool access ////////////////////////////////////////////////////////// |
|
1701 |
||
1702 |
JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) |
|
1703 |
{ |
|
1704 |
JVMWrapper("JVM_GetClassConstantPool"); |
|
1705 |
JvmtiVMObjectAllocEventCollector oam; |
|
1706 |
||
1707 |
// Return null for primitives and arrays |
|
1708 |
if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { |
|
1709 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
1710 |
if (Klass::cast(k)->oop_is_instance()) { |
|
1711 |
instanceKlassHandle k_h(THREAD, k); |
|
1712 |
Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); |
|
1713 |
sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); |
|
1714 |
return JNIHandles::make_local(jcp()); |
|
1715 |
} |
|
1716 |
} |
|
1717 |
return NULL; |
|
1718 |
} |
|
1719 |
JVM_END |
|
1720 |
||
1721 |
||
1722 |
JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) |
|
1723 |
{ |
|
1724 |
JVMWrapper("JVM_ConstantPoolGetSize"); |
|
1725 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1726 |
return cp->length(); |
|
1727 |
} |
|
1728 |
JVM_END |
|
1729 |
||
1730 |
||
1731 |
static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
1732 |
if (!cp->is_within_bounds(index)) { |
|
1733 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
1734 |
} |
|
1735 |
} |
|
1736 |
||
1737 |
||
1738 |
JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1739 |
{ |
|
1740 |
JVMWrapper("JVM_ConstantPoolGetClassAt"); |
|
1741 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1742 |
bounds_check(cp, index, CHECK_NULL); |
|
1743 |
constantTag tag = cp->tag_at(index); |
|
1744 |
if (!tag.is_klass() && !tag.is_unresolved_klass()) { |
|
1745 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1746 |
} |
|
1747 |
klassOop k = cp->klass_at(index, CHECK_NULL); |
|
1748 |
return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); |
|
1749 |
} |
|
1750 |
JVM_END |
|
1751 |
||
1752 |
||
1753 |
JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1754 |
{ |
|
1755 |
JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); |
|
1756 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1757 |
bounds_check(cp, index, CHECK_NULL); |
|
1758 |
constantTag tag = cp->tag_at(index); |
|
1759 |
if (!tag.is_klass() && !tag.is_unresolved_klass()) { |
|
1760 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1761 |
} |
|
1762 |
klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); |
|
1763 |
if (k == NULL) return NULL; |
|
1764 |
return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); |
|
1765 |
} |
|
1766 |
JVM_END |
|
1767 |
||
1768 |
static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { |
|
1769 |
constantTag tag = cp->tag_at(index); |
|
1770 |
if (!tag.is_method() && !tag.is_interface_method()) { |
|
1771 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1772 |
} |
|
1773 |
int klass_ref = cp->uncached_klass_ref_index_at(index); |
|
1774 |
klassOop k_o; |
|
1775 |
if (force_resolution) { |
|
1776 |
k_o = cp->klass_at(klass_ref, CHECK_NULL); |
|
1777 |
} else { |
|
1778 |
k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); |
|
1779 |
if (k_o == NULL) return NULL; |
|
1780 |
} |
|
1781 |
instanceKlassHandle k(THREAD, k_o); |
|
1782 |
symbolOop name = cp->uncached_name_ref_at(index); |
|
1783 |
symbolOop sig = cp->uncached_signature_ref_at(index); |
|
1784 |
methodHandle m (THREAD, k->find_method(name, sig)); |
|
1785 |
if (m.is_null()) { |
|
1786 |
THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); |
|
1787 |
} |
|
1788 |
oop method; |
|
1789 |
if (!m->is_initializer() || m->is_static()) { |
|
1790 |
method = Reflection::new_method(m, true, true, CHECK_NULL); |
|
1791 |
} else { |
|
1792 |
method = Reflection::new_constructor(m, CHECK_NULL); |
|
1793 |
} |
|
1794 |
return JNIHandles::make_local(method); |
|
1795 |
} |
|
1796 |
||
1797 |
JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1798 |
{ |
|
1799 |
JVMWrapper("JVM_ConstantPoolGetMethodAt"); |
|
1800 |
JvmtiVMObjectAllocEventCollector oam; |
|
1801 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1802 |
bounds_check(cp, index, CHECK_NULL); |
|
1803 |
jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); |
|
1804 |
return res; |
|
1805 |
} |
|
1806 |
JVM_END |
|
1807 |
||
1808 |
JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1809 |
{ |
|
1810 |
JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); |
|
1811 |
JvmtiVMObjectAllocEventCollector oam; |
|
1812 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1813 |
bounds_check(cp, index, CHECK_NULL); |
|
1814 |
jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); |
|
1815 |
return res; |
|
1816 |
} |
|
1817 |
JVM_END |
|
1818 |
||
1819 |
static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { |
|
1820 |
constantTag tag = cp->tag_at(index); |
|
1821 |
if (!tag.is_field()) { |
|
1822 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1823 |
} |
|
1824 |
int klass_ref = cp->uncached_klass_ref_index_at(index); |
|
1825 |
klassOop k_o; |
|
1826 |
if (force_resolution) { |
|
1827 |
k_o = cp->klass_at(klass_ref, CHECK_NULL); |
|
1828 |
} else { |
|
1829 |
k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); |
|
1830 |
if (k_o == NULL) return NULL; |
|
1831 |
} |
|
1832 |
instanceKlassHandle k(THREAD, k_o); |
|
1833 |
symbolOop name = cp->uncached_name_ref_at(index); |
|
1834 |
symbolOop sig = cp->uncached_signature_ref_at(index); |
|
1835 |
fieldDescriptor fd; |
|
1836 |
klassOop target_klass = k->find_field(name, sig, &fd); |
|
1837 |
if (target_klass == NULL) { |
|
1838 |
THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); |
|
1839 |
} |
|
1840 |
oop field = Reflection::new_field(&fd, true, CHECK_NULL); |
|
1841 |
return JNIHandles::make_local(field); |
|
1842 |
} |
|
1843 |
||
1844 |
JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1845 |
{ |
|
1846 |
JVMWrapper("JVM_ConstantPoolGetFieldAt"); |
|
1847 |
JvmtiVMObjectAllocEventCollector oam; |
|
1848 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1849 |
bounds_check(cp, index, CHECK_NULL); |
|
1850 |
jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); |
|
1851 |
return res; |
|
1852 |
} |
|
1853 |
JVM_END |
|
1854 |
||
1855 |
JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1856 |
{ |
|
1857 |
JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); |
|
1858 |
JvmtiVMObjectAllocEventCollector oam; |
|
1859 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1860 |
bounds_check(cp, index, CHECK_NULL); |
|
1861 |
jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); |
|
1862 |
return res; |
|
1863 |
} |
|
1864 |
JVM_END |
|
1865 |
||
1866 |
JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1867 |
{ |
|
1868 |
JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); |
|
1869 |
JvmtiVMObjectAllocEventCollector oam; |
|
1870 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1871 |
bounds_check(cp, index, CHECK_NULL); |
|
1872 |
constantTag tag = cp->tag_at(index); |
|
1873 |
if (!tag.is_field_or_method()) { |
|
1874 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1875 |
} |
|
1876 |
int klass_ref = cp->uncached_klass_ref_index_at(index); |
|
1877 |
symbolHandle klass_name (THREAD, cp->klass_name_at(klass_ref)); |
|
1878 |
symbolHandle member_name(THREAD, cp->uncached_name_ref_at(index)); |
|
1879 |
symbolHandle member_sig (THREAD, cp->uncached_signature_ref_at(index)); |
|
1880 |
objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::string_klass(), 3, CHECK_NULL); |
|
1881 |
objArrayHandle dest(THREAD, dest_o); |
|
1882 |
Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); |
|
1883 |
dest->obj_at_put(0, str()); |
|
1884 |
str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); |
|
1885 |
dest->obj_at_put(1, str()); |
|
1886 |
str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); |
|
1887 |
dest->obj_at_put(2, str()); |
|
1888 |
return (jobjectArray) JNIHandles::make_local(dest()); |
|
1889 |
} |
|
1890 |
JVM_END |
|
1891 |
||
1892 |
JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1893 |
{ |
|
1894 |
JVMWrapper("JVM_ConstantPoolGetIntAt"); |
|
1895 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1896 |
bounds_check(cp, index, CHECK_0); |
|
1897 |
constantTag tag = cp->tag_at(index); |
|
1898 |
if (!tag.is_int()) { |
|
1899 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1900 |
} |
|
1901 |
return cp->int_at(index); |
|
1902 |
} |
|
1903 |
JVM_END |
|
1904 |
||
1905 |
JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1906 |
{ |
|
1907 |
JVMWrapper("JVM_ConstantPoolGetLongAt"); |
|
1908 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1909 |
bounds_check(cp, index, CHECK_(0L)); |
|
1910 |
constantTag tag = cp->tag_at(index); |
|
1911 |
if (!tag.is_long()) { |
|
1912 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1913 |
} |
|
1914 |
return cp->long_at(index); |
|
1915 |
} |
|
1916 |
JVM_END |
|
1917 |
||
1918 |
JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1919 |
{ |
|
1920 |
JVMWrapper("JVM_ConstantPoolGetFloatAt"); |
|
1921 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1922 |
bounds_check(cp, index, CHECK_(0.0f)); |
|
1923 |
constantTag tag = cp->tag_at(index); |
|
1924 |
if (!tag.is_float()) { |
|
1925 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1926 |
} |
|
1927 |
return cp->float_at(index); |
|
1928 |
} |
|
1929 |
JVM_END |
|
1930 |
||
1931 |
JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1932 |
{ |
|
1933 |
JVMWrapper("JVM_ConstantPoolGetDoubleAt"); |
|
1934 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1935 |
bounds_check(cp, index, CHECK_(0.0)); |
|
1936 |
constantTag tag = cp->tag_at(index); |
|
1937 |
if (!tag.is_double()) { |
|
1938 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1939 |
} |
|
1940 |
return cp->double_at(index); |
|
1941 |
} |
|
1942 |
JVM_END |
|
1943 |
||
1944 |
JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1945 |
{ |
|
1946 |
JVMWrapper("JVM_ConstantPoolGetStringAt"); |
|
1947 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1948 |
bounds_check(cp, index, CHECK_NULL); |
|
1949 |
constantTag tag = cp->tag_at(index); |
|
1950 |
if (!tag.is_string() && !tag.is_unresolved_string()) { |
|
1951 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1952 |
} |
|
1953 |
oop str = cp->string_at(index, CHECK_NULL); |
|
1954 |
return (jstring) JNIHandles::make_local(str); |
|
1955 |
} |
|
1956 |
JVM_END |
|
1957 |
||
1958 |
JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) |
|
1959 |
{ |
|
1960 |
JVMWrapper("JVM_ConstantPoolGetUTF8At"); |
|
1961 |
JvmtiVMObjectAllocEventCollector oam; |
|
1962 |
constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); |
|
1963 |
bounds_check(cp, index, CHECK_NULL); |
|
1964 |
constantTag tag = cp->tag_at(index); |
|
1965 |
if (!tag.is_symbol()) { |
|
1966 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
|
1967 |
} |
|
1968 |
symbolOop sym_o = cp->symbol_at(index); |
|
1969 |
symbolHandle sym(THREAD, sym_o); |
|
1970 |
Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
|
1971 |
return (jstring) JNIHandles::make_local(str()); |
|
1972 |
} |
|
1973 |
JVM_END |
|
1974 |
||
1975 |
||
1976 |
// Assertion support. ////////////////////////////////////////////////////////// |
|
1977 |
||
1978 |
JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) |
|
1979 |
JVMWrapper("JVM_DesiredAssertionStatus"); |
|
1980 |
assert(cls != NULL, "bad class"); |
|
1981 |
||
1982 |
oop r = JNIHandles::resolve(cls); |
|
1983 |
assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); |
|
1984 |
if (java_lang_Class::is_primitive(r)) return false; |
|
1985 |
||
1986 |
klassOop k = java_lang_Class::as_klassOop(r); |
|
1987 |
assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); |
|
1988 |
if (! Klass::cast(k)->oop_is_instance()) return false; |
|
1989 |
||
1990 |
ResourceMark rm(THREAD); |
|
1991 |
const char* name = Klass::cast(k)->name()->as_C_string(); |
|
1992 |
bool system_class = Klass::cast(k)->class_loader() == NULL; |
|
1993 |
return JavaAssertions::enabled(name, system_class); |
|
1994 |
||
1995 |
JVM_END |
|
1996 |
||
1997 |
||
1998 |
// Return a new AssertionStatusDirectives object with the fields filled in with |
|
1999 |
// command-line assertion arguments (i.e., -ea, -da). |
|
2000 |
JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) |
|
2001 |
JVMWrapper("JVM_AssertionStatusDirectives"); |
|
2002 |
JvmtiVMObjectAllocEventCollector oam; |
|
2003 |
oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); |
|
2004 |
return JNIHandles::make_local(env, asd); |
|
2005 |
JVM_END |
|
2006 |
||
2007 |
// Verification //////////////////////////////////////////////////////////////////////////////// |
|
2008 |
||
2009 |
// Reflection for the verifier ///////////////////////////////////////////////////////////////// |
|
2010 |
||
2011 |
// RedefineClasses support: bug 6214132 caused verification to fail. |
|
2012 |
// All functions from this section should call the jvmtiThreadSate function: |
|
2013 |
// klassOop class_to_verify_considering_redefinition(klassOop klass). |
|
2014 |
// The function returns a klassOop of the _scratch_class if the verifier |
|
2015 |
// was invoked in the middle of the class redefinition. |
|
2016 |
// Otherwise it returns its argument value which is the _the_class klassOop. |
|
2017 |
// Please, refer to the description in the jvmtiThreadSate.hpp. |
|
2018 |
||
2019 |
JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) |
|
2020 |
JVMWrapper("JVM_GetClassNameUTF"); |
|
2021 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2022 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2023 |
return Klass::cast(k)->name()->as_utf8(); |
|
2024 |
JVM_END |
|
2025 |
||
2026 |
||
2027 |
JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) |
|
2028 |
JVMWrapper("JVM_GetClassCPTypes"); |
|
2029 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2030 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2031 |
// types will have length zero if this is not an instanceKlass |
|
2032 |
// (length is determined by call to JVM_GetClassCPEntriesCount) |
|
2033 |
if (Klass::cast(k)->oop_is_instance()) { |
|
2034 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2035 |
for (int index = cp->length() - 1; index >= 0; index--) { |
|
2036 |
constantTag tag = cp->tag_at(index); |
|
2037 |
types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : |
|
2038 |
(tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); |
|
2039 |
} |
|
2040 |
} |
|
2041 |
JVM_END |
|
2042 |
||
2043 |
||
2044 |
JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) |
|
2045 |
JVMWrapper("JVM_GetClassCPEntriesCount"); |
|
2046 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2047 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2048 |
if (!Klass::cast(k)->oop_is_instance()) |
|
2049 |
return 0; |
|
2050 |
return instanceKlass::cast(k)->constants()->length(); |
|
2051 |
JVM_END |
|
2052 |
||
2053 |
||
2054 |
JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) |
|
2055 |
JVMWrapper("JVM_GetClassFieldsCount"); |
|
2056 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2057 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2058 |
if (!Klass::cast(k)->oop_is_instance()) |
|
2059 |
return 0; |
|
2060 |
return instanceKlass::cast(k)->fields()->length() / instanceKlass::next_offset; |
|
2061 |
JVM_END |
|
2062 |
||
2063 |
||
2064 |
JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) |
|
2065 |
JVMWrapper("JVM_GetClassMethodsCount"); |
|
2066 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2067 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2068 |
if (!Klass::cast(k)->oop_is_instance()) |
|
2069 |
return 0; |
|
2070 |
return instanceKlass::cast(k)->methods()->length(); |
|
2071 |
JVM_END |
|
2072 |
||
2073 |
||
2074 |
// The following methods, used for the verifier, are never called with |
|
2075 |
// array klasses, so a direct cast to instanceKlass is safe. |
|
2076 |
// Typically, these methods are called in a loop with bounds determined |
|
2077 |
// by the results of JVM_GetClass{Fields,Methods}Count, which return |
|
2078 |
// zero for arrays. |
|
2079 |
JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) |
|
2080 |
JVMWrapper("JVM_GetMethodIxExceptionIndexes"); |
|
2081 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2082 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2083 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2084 |
int length = methodOop(method)->checked_exceptions_length(); |
|
2085 |
if (length > 0) { |
|
2086 |
CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); |
|
2087 |
for (int i = 0; i < length; i++) { |
|
2088 |
exceptions[i] = table[i].class_cp_index; |
|
2089 |
} |
|
2090 |
} |
|
2091 |
JVM_END |
|
2092 |
||
2093 |
||
2094 |
JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) |
|
2095 |
JVMWrapper("JVM_GetMethodIxExceptionsCount"); |
|
2096 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2097 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2098 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2099 |
return methodOop(method)->checked_exceptions_length(); |
|
2100 |
JVM_END |
|
2101 |
||
2102 |
||
2103 |
JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) |
|
2104 |
JVMWrapper("JVM_GetMethodIxByteCode"); |
|
2105 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2106 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2107 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2108 |
memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); |
|
2109 |
JVM_END |
|
2110 |
||
2111 |
||
2112 |
JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) |
|
2113 |
JVMWrapper("JVM_GetMethodIxByteCodeLength"); |
|
2114 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2115 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2116 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2117 |
return methodOop(method)->code_size(); |
|
2118 |
JVM_END |
|
2119 |
||
2120 |
||
2121 |
JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) |
|
2122 |
JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); |
|
2123 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2124 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2125 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2126 |
typeArrayOop extable = methodOop(method)->exception_table(); |
|
2127 |
entry->start_pc = extable->int_at(entry_index * 4); |
|
2128 |
entry->end_pc = extable->int_at(entry_index * 4 + 1); |
|
2129 |
entry->handler_pc = extable->int_at(entry_index * 4 + 2); |
|
2130 |
entry->catchType = extable->int_at(entry_index * 4 + 3); |
|
2131 |
JVM_END |
|
2132 |
||
2133 |
||
2134 |
JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) |
|
2135 |
JVMWrapper("JVM_GetMethodIxExceptionTableLength"); |
|
2136 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2137 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2138 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2139 |
return methodOop(method)->exception_table()->length() / 4; |
|
2140 |
JVM_END |
|
2141 |
||
2142 |
||
2143 |
JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) |
|
2144 |
JVMWrapper("JVM_GetMethodIxModifiers"); |
|
2145 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2146 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2147 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2148 |
return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
|
2149 |
JVM_END |
|
2150 |
||
2151 |
||
2152 |
JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) |
|
2153 |
JVMWrapper("JVM_GetFieldIxModifiers"); |
|
2154 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2155 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2156 |
typeArrayOop fields = instanceKlass::cast(k)->fields(); |
|
2157 |
return fields->ushort_at(field_index * instanceKlass::next_offset + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
|
2158 |
JVM_END |
|
2159 |
||
2160 |
||
2161 |
JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) |
|
2162 |
JVMWrapper("JVM_GetMethodIxLocalsCount"); |
|
2163 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2164 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2165 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2166 |
return methodOop(method)->max_locals(); |
|
2167 |
JVM_END |
|
2168 |
||
2169 |
||
2170 |
JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) |
|
2171 |
JVMWrapper("JVM_GetMethodIxArgsSize"); |
|
2172 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2173 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2174 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2175 |
return methodOop(method)->size_of_parameters(); |
|
2176 |
JVM_END |
|
2177 |
||
2178 |
||
2179 |
JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) |
|
2180 |
JVMWrapper("JVM_GetMethodIxMaxStack"); |
|
2181 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2182 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2183 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2184 |
return methodOop(method)->max_stack(); |
|
2185 |
JVM_END |
|
2186 |
||
2187 |
||
2188 |
JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) |
|
2189 |
JVMWrapper("JVM_IsConstructorIx"); |
|
2190 |
ResourceMark rm(THREAD); |
|
2191 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2192 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2193 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2194 |
return methodOop(method)->name() == vmSymbols::object_initializer_name(); |
|
2195 |
JVM_END |
|
2196 |
||
2197 |
||
2198 |
JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
|
2199 |
JVMWrapper("JVM_GetMethodIxIxUTF"); |
|
2200 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2201 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2202 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2203 |
return methodOop(method)->name()->as_utf8(); |
|
2204 |
JVM_END |
|
2205 |
||
2206 |
||
2207 |
JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) |
|
2208 |
JVMWrapper("JVM_GetMethodIxSignatureUTF"); |
|
2209 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2210 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2211 |
oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); |
|
2212 |
return methodOop(method)->signature()->as_utf8(); |
|
2213 |
JVM_END |
|
2214 |
||
2215 |
/** |
|
2216 |
* All of these JVM_GetCP-xxx methods are used by the old verifier to |
|
2217 |
* read entries in the constant pool. Since the old verifier always |
|
2218 |
* works on a copy of the code, it will not see any rewriting that |
|
2219 |
* may possibly occur in the middle of verification. So it is important |
|
2220 |
* that nothing it calls tries to use the cpCache instead of the raw |
|
2221 |
* constant pool, so we must use cp->uncached_x methods when appropriate. |
|
2222 |
*/ |
|
2223 |
JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) |
|
2224 |
JVMWrapper("JVM_GetCPFieldNameUTF"); |
|
2225 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2226 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2227 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2228 |
switch (cp->tag_at(cp_index).value()) { |
|
2229 |
case JVM_CONSTANT_Fieldref: |
|
2230 |
return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
|
2231 |
default: |
|
2232 |
fatal("JVM_GetCPFieldNameUTF: illegal constant"); |
|
2233 |
} |
|
2234 |
ShouldNotReachHere(); |
|
2235 |
return NULL; |
|
2236 |
JVM_END |
|
2237 |
||
2238 |
||
2239 |
JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) |
|
2240 |
JVMWrapper("JVM_GetCPMethodNameUTF"); |
|
2241 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2242 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2243 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2244 |
switch (cp->tag_at(cp_index).value()) { |
|
2245 |
case JVM_CONSTANT_InterfaceMethodref: |
|
2246 |
case JVM_CONSTANT_Methodref: |
|
2247 |
return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2343
diff
changeset
|
2248 |
case JVM_CONSTANT_NameAndType: |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2343
diff
changeset
|
2249 |
// for invokedynamic |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2343
diff
changeset
|
2250 |
return cp->nt_name_ref_at(cp_index)->as_utf8(); |
1 | 2251 |
default: |
2252 |
fatal("JVM_GetCPMethodNameUTF: illegal constant"); |
|
2253 |
} |
|
2254 |
ShouldNotReachHere(); |
|
2255 |
return NULL; |
|
2256 |
JVM_END |
|
2257 |
||
2258 |
||
2259 |
JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) |
|
2260 |
JVMWrapper("JVM_GetCPMethodSignatureUTF"); |
|
2261 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2262 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2263 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2264 |
switch (cp->tag_at(cp_index).value()) { |
|
2265 |
case JVM_CONSTANT_InterfaceMethodref: |
|
2266 |
case JVM_CONSTANT_Methodref: |
|
2267 |
return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2343
diff
changeset
|
2268 |
case JVM_CONSTANT_NameAndType: |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2343
diff
changeset
|
2269 |
// for invokedynamic |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2343
diff
changeset
|
2270 |
return cp->nt_signature_ref_at(cp_index)->as_utf8(); |
1 | 2271 |
default: |
2272 |
fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); |
|
2273 |
} |
|
2274 |
ShouldNotReachHere(); |
|
2275 |
return NULL; |
|
2276 |
JVM_END |
|
2277 |
||
2278 |
||
2279 |
JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) |
|
2280 |
JVMWrapper("JVM_GetCPFieldSignatureUTF"); |
|
2281 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2282 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2283 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2284 |
switch (cp->tag_at(cp_index).value()) { |
|
2285 |
case JVM_CONSTANT_Fieldref: |
|
2286 |
return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
|
2287 |
default: |
|
2288 |
fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); |
|
2289 |
} |
|
2290 |
ShouldNotReachHere(); |
|
2291 |
return NULL; |
|
2292 |
JVM_END |
|
2293 |
||
2294 |
||
2295 |
JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) |
|
2296 |
JVMWrapper("JVM_GetCPClassNameUTF"); |
|
2297 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2298 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2299 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2300 |
symbolOop classname = cp->klass_name_at(cp_index); |
|
2301 |
return classname->as_utf8(); |
|
2302 |
JVM_END |
|
2303 |
||
2304 |
||
2305 |
JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) |
|
2306 |
JVMWrapper("JVM_GetCPFieldClassNameUTF"); |
|
2307 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2308 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2309 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2310 |
switch (cp->tag_at(cp_index).value()) { |
|
2311 |
case JVM_CONSTANT_Fieldref: { |
|
2312 |
int class_index = cp->uncached_klass_ref_index_at(cp_index); |
|
2313 |
symbolOop classname = cp->klass_name_at(class_index); |
|
2314 |
return classname->as_utf8(); |
|
2315 |
} |
|
2316 |
default: |
|
2317 |
fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); |
|
2318 |
} |
|
2319 |
ShouldNotReachHere(); |
|
2320 |
return NULL; |
|
2321 |
JVM_END |
|
2322 |
||
2323 |
||
2324 |
JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) |
|
2325 |
JVMWrapper("JVM_GetCPMethodClassNameUTF"); |
|
2326 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2327 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2328 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2329 |
switch (cp->tag_at(cp_index).value()) { |
|
2330 |
case JVM_CONSTANT_Methodref: |
|
2331 |
case JVM_CONSTANT_InterfaceMethodref: { |
|
2332 |
int class_index = cp->uncached_klass_ref_index_at(cp_index); |
|
2333 |
symbolOop classname = cp->klass_name_at(class_index); |
|
2334 |
return classname->as_utf8(); |
|
2335 |
} |
|
2336 |
default: |
|
2337 |
fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); |
|
2338 |
} |
|
2339 |
ShouldNotReachHere(); |
|
2340 |
return NULL; |
|
2341 |
JVM_END |
|
2342 |
||
2343 |
||
2344 |
JVM_QUICK_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
|
2345 |
JVMWrapper("JVM_GetCPFieldModifiers"); |
|
2346 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2347 |
klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); |
|
2348 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2349 |
k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); |
|
2350 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2351 |
constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); |
|
2352 |
switch (cp->tag_at(cp_index).value()) { |
|
2353 |
case JVM_CONSTANT_Fieldref: { |
|
2354 |
symbolOop name = cp->uncached_name_ref_at(cp_index); |
|
2355 |
symbolOop signature = cp->uncached_signature_ref_at(cp_index); |
|
2356 |
typeArrayOop fields = instanceKlass::cast(k_called)->fields(); |
|
2357 |
int fields_count = fields->length(); |
|
2358 |
for (int i = 0; i < fields_count; i += instanceKlass::next_offset) { |
|
2359 |
if (cp_called->symbol_at(fields->ushort_at(i + instanceKlass::name_index_offset)) == name && |
|
2360 |
cp_called->symbol_at(fields->ushort_at(i + instanceKlass::signature_index_offset)) == signature) { |
|
2361 |
return fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
|
2362 |
} |
|
2363 |
} |
|
2364 |
return -1; |
|
2365 |
} |
|
2366 |
default: |
|
2367 |
fatal("JVM_GetCPFieldModifiers: illegal constant"); |
|
2368 |
} |
|
2369 |
ShouldNotReachHere(); |
|
2370 |
return 0; |
|
2371 |
JVM_END |
|
2372 |
||
2373 |
||
2374 |
JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
|
2375 |
JVMWrapper("JVM_GetCPMethodModifiers"); |
|
2376 |
klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
|
2377 |
klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); |
|
2378 |
k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
2379 |
k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); |
|
2380 |
constantPoolOop cp = instanceKlass::cast(k)->constants(); |
|
2381 |
switch (cp->tag_at(cp_index).value()) { |
|
2382 |
case JVM_CONSTANT_Methodref: |
|
2383 |
case JVM_CONSTANT_InterfaceMethodref: { |
|
2384 |
symbolOop name = cp->uncached_name_ref_at(cp_index); |
|
2385 |
symbolOop signature = cp->uncached_signature_ref_at(cp_index); |
|
2386 |
objArrayOop methods = instanceKlass::cast(k_called)->methods(); |
|
2387 |
int methods_count = methods->length(); |
|
2388 |
for (int i = 0; i < methods_count; i++) { |
|
2389 |
methodOop method = methodOop(methods->obj_at(i)); |
|
2390 |
if (method->name() == name && method->signature() == signature) { |
|
2391 |
return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
|
2392 |
} |
|
2393 |
} |
|
2394 |
return -1; |
|
2395 |
} |
|
2396 |
default: |
|
2397 |
fatal("JVM_GetCPMethodModifiers: illegal constant"); |
|
2398 |
} |
|
2399 |
ShouldNotReachHere(); |
|
2400 |
return 0; |
|
2401 |
JVM_END |
|
2402 |
||
2403 |
||
2404 |
// Misc ////////////////////////////////////////////////////////////////////////////////////////////// |
|
2405 |
||
2406 |
JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) |
|
2407 |
// So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything |
|
2408 |
JVM_END |
|
2409 |
||
2410 |
||
2411 |
JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) |
|
2412 |
JVMWrapper("JVM_IsSameClassPackage"); |
|
2413 |
oop class1_mirror = JNIHandles::resolve_non_null(class1); |
|
2414 |
oop class2_mirror = JNIHandles::resolve_non_null(class2); |
|
2415 |
klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); |
|
2416 |
klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); |
|
2417 |
return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
|
2418 |
JVM_END |
|
2419 |
||
2420 |
||
2421 |
// IO functions //////////////////////////////////////////////////////////////////////////////////////// |
|
2422 |
||
2423 |
JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) |
|
2424 |
JVMWrapper2("JVM_Open (%s)", fname); |
|
2425 |
||
2426 |
//%note jvm_r6 |
|
2427 |
int result = hpi::open(fname, flags, mode); |
|
2428 |
if (result >= 0) { |
|
2429 |
return result; |
|
2430 |
} else { |
|
2431 |
switch(errno) { |
|
2432 |
case EEXIST: |
|
2433 |
return JVM_EEXIST; |
|
2434 |
default: |
|
2435 |
return -1; |
|
2436 |
} |
|
2437 |
} |
|
2438 |
JVM_END |
|
2439 |
||
2440 |
||
2441 |
JVM_LEAF(jint, JVM_Close(jint fd)) |
|
2442 |
JVMWrapper2("JVM_Close (0x%x)", fd); |
|
2443 |
//%note jvm_r6 |
|
2444 |
return hpi::close(fd); |
|
2445 |
JVM_END |
|
2446 |
||
2447 |
||
2448 |
JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) |
|
2449 |
JVMWrapper2("JVM_Read (0x%x)", fd); |
|
2450 |
||
2451 |
//%note jvm_r6 |
|
2452 |
return (jint)hpi::read(fd, buf, nbytes); |
|
2453 |
JVM_END |
|
2454 |
||
2455 |
||
2456 |
JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) |
|
2457 |
JVMWrapper2("JVM_Write (0x%x)", fd); |
|
2458 |
||
2459 |
//%note jvm_r6 |
|
2460 |
return (jint)hpi::write(fd, buf, nbytes); |
|
2461 |
JVM_END |
|
2462 |
||
2463 |
||
2464 |
JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) |
|
2465 |
JVMWrapper2("JVM_Available (0x%x)", fd); |
|
2466 |
//%note jvm_r6 |
|
2467 |
return hpi::available(fd, pbytes); |
|
2468 |
JVM_END |
|
2469 |
||
2470 |
||
2471 |
JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) |
|
2472 |
JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); |
|
2473 |
//%note jvm_r6 |
|
2474 |
return hpi::lseek(fd, offset, whence); |
|
2475 |
JVM_END |
|
2476 |
||
2477 |
||
2478 |
JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) |
|
2479 |
JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); |
|
2480 |
return hpi::ftruncate(fd, length); |
|
2481 |
JVM_END |
|
2482 |
||
2483 |
||
2484 |
JVM_LEAF(jint, JVM_Sync(jint fd)) |
|
2485 |
JVMWrapper2("JVM_Sync (0x%x)", fd); |
|
2486 |
//%note jvm_r6 |
|
2487 |
return hpi::fsync(fd); |
|
2488 |
JVM_END |
|
2489 |
||
2490 |
||
2491 |
// Printing support ////////////////////////////////////////////////// |
|
2492 |
extern "C" { |
|
2493 |
||
2494 |
int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
|
2495 |
// see bug 4399518, 4417214 |
|
2496 |
if ((intptr_t)count <= 0) return -1; |
|
2497 |
return vsnprintf(str, count, fmt, args); |
|
2498 |
} |
|
2499 |
||
2500 |
||
2501 |
int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
|
2502 |
va_list args; |
|
2503 |
int len; |
|
2504 |
va_start(args, fmt); |
|
2505 |
len = jio_vsnprintf(str, count, fmt, args); |
|
2506 |
va_end(args); |
|
2507 |
return len; |
|
2508 |
} |
|
2509 |
||
2510 |
||
2511 |
int jio_fprintf(FILE* f, const char *fmt, ...) { |
|
2512 |
int len; |
|
2513 |
va_list args; |
|
2514 |
va_start(args, fmt); |
|
2515 |
len = jio_vfprintf(f, fmt, args); |
|
2516 |
va_end(args); |
|
2517 |
return len; |
|
2518 |
} |
|
2519 |
||
2520 |
||
2521 |
int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
|
2522 |
if (Arguments::vfprintf_hook() != NULL) { |
|
2523 |
return Arguments::vfprintf_hook()(f, fmt, args); |
|
2524 |
} else { |
|
2525 |
return vfprintf(f, fmt, args); |
|
2526 |
} |
|
2527 |
} |
|
2528 |
||
2529 |
||
2530 |
int jio_printf(const char *fmt, ...) { |
|
2531 |
int len; |
|
2532 |
va_list args; |
|
2533 |
va_start(args, fmt); |
|
2534 |
len = jio_vfprintf(defaultStream::output_stream(), fmt, args); |
|
2535 |
va_end(args); |
|
2536 |
return len; |
|
2537 |
} |
|
2538 |
||
2539 |
||
2540 |
// HotSpot specific jio method |
|
2541 |
void jio_print(const char* s) { |
|
2542 |
// Try to make this function as atomic as possible. |
|
2543 |
if (Arguments::vfprintf_hook() != NULL) { |
|
2544 |
jio_fprintf(defaultStream::output_stream(), "%s", s); |
|
2545 |
} else { |
|
1889
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
1550
diff
changeset
|
2546 |
// Make an unused local variable to avoid warning from gcc 4.x compiler. |
24b003a6fe46
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
1550
diff
changeset
|
2547 |
size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
1 | 2548 |
} |
2549 |
} |
|
2550 |
||
2551 |
} // Extern C |
|
2552 |
||
2553 |
// java.lang.Thread ////////////////////////////////////////////////////////////////////////////// |
|
2554 |
||
2555 |
// In most of the JVM Thread support functions we need to be sure to lock the Threads_lock |
|
2556 |
// to prevent the target thread from exiting after we have a pointer to the C++ Thread or |
|
2557 |
// OSThread objects. The exception to this rule is when the target object is the thread |
|
2558 |
// doing the operation, in which case we know that the thread won't exit until the |
|
2559 |
// operation is done (all exits being voluntary). There are a few cases where it is |
|
2560 |
// rather silly to do operations on yourself, like resuming yourself or asking whether |
|
2561 |
// you are alive. While these can still happen, they are not subject to deadlocks if |
|
2562 |
// the lock is held while the operation occurs (this is not the case for suspend, for |
|
2563 |
// instance), and are very unlikely. Because IsAlive needs to be fast and its |
|
2564 |
// implementation is local to this file, we always lock Threads_lock for that one. |
|
2565 |
||
2566 |
static void thread_entry(JavaThread* thread, TRAPS) { |
|
2567 |
HandleMark hm(THREAD); |
|
2568 |
Handle obj(THREAD, thread->threadObj()); |
|
2569 |
JavaValue result(T_VOID); |
|
2570 |
JavaCalls::call_virtual(&result, |
|
2571 |
obj, |
|
2572 |
KlassHandle(THREAD, SystemDictionary::thread_klass()), |
|
2573 |
vmSymbolHandles::run_method_name(), |
|
2574 |
vmSymbolHandles::void_method_signature(), |
|
2575 |
THREAD); |
|
2576 |
} |
|
2577 |
||
2578 |
||
2579 |
JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) |
|
2580 |
JVMWrapper("JVM_StartThread"); |
|
2581 |
JavaThread *native_thread = NULL; |
|
2582 |
||
2583 |
// We cannot hold the Threads_lock when we throw an exception, |
|
2584 |
// due to rank ordering issues. Example: we might need to grab the |
|
2585 |
// Heap_lock while we construct the exception. |
|
2586 |
bool throw_illegal_thread_state = false; |
|
2587 |
||
2588 |
// We must release the Threads_lock before we can post a jvmti event |
|
2589 |
// in Thread::start. |
|
2590 |
{ |
|
2591 |
// Ensure that the C++ Thread and OSThread structures aren't freed before |
|
2592 |
// we operate. |
|
2593 |
MutexLocker mu(Threads_lock); |
|
2594 |
||
2595 |
// Check to see if we're running a thread that's already exited or was |
|
2596 |
// stopped (is_stillborn) or is still active (thread is not NULL). |
|
2597 |
if (java_lang_Thread::is_stillborn(JNIHandles::resolve_non_null(jthread)) || |
|
2598 |
java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
2599 |
throw_illegal_thread_state = true; |
|
2600 |
} else { |
|
2601 |
jlong size = |
|
2602 |
java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); |
|
2603 |
// Allocate the C++ Thread structure and create the native thread. The |
|
2604 |
// stack size retrieved from java is signed, but the constructor takes |
|
2605 |
// size_t (an unsigned type), so avoid passing negative values which would |
|
2606 |
// result in really large stacks. |
|
2607 |
size_t sz = size > 0 ? (size_t) size : 0; |
|
2608 |
native_thread = new JavaThread(&thread_entry, sz); |
|
2609 |
||
2610 |
// At this point it may be possible that no osthread was created for the |
|
2611 |
// JavaThread due to lack of memory. Check for this situation and throw |
|
2612 |
// an exception if necessary. Eventually we may want to change this so |
|
2613 |
// that we only grab the lock if the thread was created successfully - |
|
2614 |
// then we can also do this check and throw the exception in the |
|
2615 |
// JavaThread constructor. |
|
2616 |
if (native_thread->osthread() != NULL) { |
|
2617 |
// Note: the current thread is not being used within "prepare". |
|
2618 |
native_thread->prepare(jthread); |
|
2619 |
} |
|
2620 |
} |
|
2621 |
} |
|
2622 |
||
2623 |
if (throw_illegal_thread_state) { |
|
2624 |
THROW(vmSymbols::java_lang_IllegalThreadStateException()); |
|
2625 |
} |
|
2626 |
||
2627 |
assert(native_thread != NULL, "Starting null thread?"); |
|
2628 |
||
2629 |
if (native_thread->osthread() == NULL) { |
|
2630 |
// No one should hold a reference to the 'native_thread'. |
|
2631 |
delete native_thread; |
|
2632 |
if (JvmtiExport::should_post_resource_exhausted()) { |
|
2633 |
JvmtiExport::post_resource_exhausted( |
|
2634 |
JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, |
|
2635 |
"unable to create new native thread"); |
|
2636 |
} |
|
2637 |
THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), |
|
2638 |
"unable to create new native thread"); |
|
2639 |
} |
|
2640 |
||
2641 |
Thread::start(native_thread); |
|
2642 |
||
2643 |
JVM_END |
|
2644 |
||
2645 |
// JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints |
|
2646 |
// before the quasi-asynchronous exception is delivered. This is a little obtrusive, |
|
2647 |
// but is thought to be reliable and simple. In the case, where the receiver is the |
|
2648 |
// save thread as the sender, no safepoint is needed. |
|
2649 |
JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
|
2650 |
JVMWrapper("JVM_StopThread"); |
|
2651 |
||
2652 |
oop java_throwable = JNIHandles::resolve(throwable); |
|
2653 |
if (java_throwable == NULL) { |
|
2654 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
2655 |
} |
|
2656 |
oop java_thread = JNIHandles::resolve_non_null(jthread); |
|
2657 |
JavaThread* receiver = java_lang_Thread::thread(java_thread); |
|
2658 |
Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); |
|
2659 |
// First check if thread already exited |
|
2660 |
if (receiver != NULL) { |
|
2661 |
// Check if exception is getting thrown at self (use oop equality, since the |
|
2662 |
// target object might exit) |
|
2663 |
if (java_thread == thread->threadObj()) { |
|
2664 |
// This is a change from JDK 1.1, but JDK 1.2 will also do it: |
|
2665 |
// NOTE (from JDK 1.2): this is done solely to prevent stopped |
|
2666 |
// threads from being restarted. |
|
2667 |
// Fix for 4314342, 4145910, perhaps others: it now doesn't have |
|
2668 |
// any effect on the "liveness" of a thread; see |
|
2669 |
// JVM_IsThreadAlive, below. |
|
2670 |
if (java_throwable->is_a(SystemDictionary::threaddeath_klass())) { |
|
2671 |
java_lang_Thread::set_stillborn(java_thread); |
|
2672 |
} |
|
2673 |
THROW_OOP(java_throwable); |
|
2674 |
} else { |
|
2675 |
// Enques a VM_Operation to stop all threads and then deliver the exception... |
|
2676 |
Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); |
|
2677 |
} |
|
2678 |
} |
|
2679 |
JVM_END |
|
2680 |
||
2681 |
||
2682 |
JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) |
|
2683 |
JVMWrapper("JVM_IsThreadAlive"); |
|
2684 |
||
2685 |
oop thread_oop = JNIHandles::resolve_non_null(jthread); |
|
2686 |
return java_lang_Thread::is_alive(thread_oop); |
|
2687 |
JVM_END |
|
2688 |
||
2689 |
||
2690 |
JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) |
|
2691 |
JVMWrapper("JVM_SuspendThread"); |
|
2692 |
oop java_thread = JNIHandles::resolve_non_null(jthread); |
|
2693 |
JavaThread* receiver = java_lang_Thread::thread(java_thread); |
|
2694 |
||
2695 |
if (receiver != NULL) { |
|
2696 |
// thread has run and has not exited (still on threads list) |
|
2697 |
||
2698 |
{ |
|
2699 |
MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); |
|
2700 |
if (receiver->is_external_suspend()) { |
|
2701 |
// Don't allow nested external suspend requests. We can't return |
|
2702 |
// an error from this interface so just ignore the problem. |
|
2703 |
return; |
|
2704 |
} |
|
2705 |
if (receiver->is_exiting()) { // thread is in the process of exiting |
|
2706 |
return; |
|
2707 |
} |
|
2708 |
receiver->set_external_suspend(); |
|
2709 |
} |
|
2710 |
||
2711 |
// java_suspend() will catch threads in the process of exiting |
|
2712 |
// and will ignore them. |
|
2713 |
receiver->java_suspend(); |
|
2714 |
||
2715 |
// It would be nice to have the following assertion in all the |
|
2716 |
// time, but it is possible for a racing resume request to have |
|
2717 |
// resumed this thread right after we suspended it. Temporarily |
|
2718 |
// enable this assertion if you are chasing a different kind of |
|
2719 |
// bug. |
|
2720 |
// |
|
2721 |
// assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || |
|
2722 |
// receiver->is_being_ext_suspended(), "thread is not suspended"); |
|
2723 |
} |
|
2724 |
JVM_END |
|
2725 |
||
2726 |
||
2727 |
JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) |
|
2728 |
JVMWrapper("JVM_ResumeThread"); |
|
2729 |
// Ensure that the C++ Thread and OSThread structures aren't freed before we operate. |
|
2730 |
// We need to *always* get the threads lock here, since this operation cannot be allowed during |
|
2731 |
// a safepoint. The safepoint code relies on suspending a thread to examine its state. If other |
|
2732 |
// threads randomly resumes threads, then a thread might not be suspended when the safepoint code |
|
2733 |
// looks at it. |
|
2734 |
MutexLocker ml(Threads_lock); |
|
2735 |
JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); |
|
2736 |
if (thr != NULL) { |
|
2737 |
// the thread has run and is not in the process of exiting |
|
2738 |
thr->java_resume(); |
|
2739 |
} |
|
2740 |
JVM_END |
|
2741 |
||
2742 |
||
2743 |
JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) |
|
2744 |
JVMWrapper("JVM_SetThreadPriority"); |
|
2745 |
// Ensure that the C++ Thread and OSThread structures aren't freed before we operate |
|
2746 |
MutexLocker ml(Threads_lock); |
|
2747 |
oop java_thread = JNIHandles::resolve_non_null(jthread); |
|
2748 |
java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); |
|
2749 |
JavaThread* thr = java_lang_Thread::thread(java_thread); |
|
2750 |
if (thr != NULL) { // Thread not yet started; priority pushed down when it is |
|
2751 |
Thread::set_priority(thr, (ThreadPriority)prio); |
|
2752 |
} |
|
2753 |
JVM_END |
|
2754 |
||
2755 |
||
2756 |
JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) |
|
2757 |
JVMWrapper("JVM_Yield"); |
|
2758 |
if (os::dont_yield()) return; |
|
2759 |
// When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
|
2760 |
// Critical for similar threading behaviour |
|
2761 |
if (ConvertYieldToSleep) { |
|
2762 |
os::sleep(thread, MinSleepInterval, false); |
|
2763 |
} else { |
|
2764 |
os::yield(); |
|
2765 |
} |
|
2766 |
JVM_END |
|
2767 |
||
2768 |
||
2769 |
JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) |
|
2770 |
JVMWrapper("JVM_Sleep"); |
|
2771 |
||
2772 |
if (millis < 0) { |
|
2773 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); |
|
2774 |
} |
|
2775 |
||
2776 |
if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { |
|
2777 |
THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); |
|
2778 |
} |
|
2779 |
||
2780 |
// Save current thread state and restore it at the end of this block. |
|
2781 |
// And set new thread state to SLEEPING. |
|
2782 |
JavaThreadSleepState jtss(thread); |
|
2783 |
||
2784 |
if (millis == 0) { |
|
2785 |
// When ConvertSleepToYield is on, this matches the classic VM implementation of |
|
2786 |
// JVM_Sleep. Critical for similar threading behaviour (Win32) |
|
2787 |
// It appears that in certain GUI contexts, it may be beneficial to do a short sleep |
|
2788 |
// for SOLARIS |
|
2789 |
if (ConvertSleepToYield) { |
|
2790 |
os::yield(); |
|
2791 |
} else { |
|
2792 |
ThreadState old_state = thread->osthread()->get_state(); |
|
2793 |
thread->osthread()->set_state(SLEEPING); |
|
2794 |
os::sleep(thread, MinSleepInterval, false); |
|
2795 |
thread->osthread()->set_state(old_state); |
|
2796 |
} |
|
2797 |
} else { |
|
2798 |
ThreadState old_state = thread->osthread()->get_state(); |
|
2799 |
thread->osthread()->set_state(SLEEPING); |
|
2800 |
if (os::sleep(thread, millis, true) == OS_INTRPT) { |
|
2801 |
// An asynchronous exception (e.g., ThreadDeathException) could have been thrown on |
|
2802 |
// us while we were sleeping. We do not overwrite those. |
|
2803 |
if (!HAS_PENDING_EXCEPTION) { |
|
2804 |
// TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
|
2805 |
// to properly restore the thread state. That's likely wrong. |
|
2806 |
THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); |
|
2807 |
} |
|
2808 |
} |
|
2809 |
thread->osthread()->set_state(old_state); |
|
2810 |
} |
|
2811 |
JVM_END |
|
2812 |
||
2813 |
JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) |
|
2814 |
JVMWrapper("JVM_CurrentThread"); |
|
2815 |
oop jthread = thread->threadObj(); |
|
2816 |
assert (thread != NULL, "no current thread!"); |
|
2817 |
return JNIHandles::make_local(env, jthread); |
|
2818 |
JVM_END |
|
2819 |
||
2820 |
||
2821 |
JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) |
|
2822 |
JVMWrapper("JVM_CountStackFrames"); |
|
2823 |
||
2824 |
// Ensure that the C++ Thread and OSThread structures aren't freed before we operate |
|
2825 |
oop java_thread = JNIHandles::resolve_non_null(jthread); |
|
2826 |
bool throw_illegal_thread_state = false; |
|
2827 |
int count = 0; |
|
2828 |
||
2829 |
{ |
|
2830 |
MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); |
|
2831 |
// We need to re-resolve the java_thread, since a GC might have happened during the |
|
2832 |
// acquire of the lock |
|
2833 |
JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); |
|
2834 |
||
2835 |
if (thr == NULL) { |
|
2836 |
// do nothing |
|
2837 |
} else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { |
|
2838 |
// Check whether this java thread has been suspended already. If not, throws |
|
2839 |
// IllegalThreadStateException. We defer to throw that exception until |
|
2840 |
// Threads_lock is released since loading exception class has to leave VM. |
|
2841 |
// The correct way to test a thread is actually suspended is |
|
2842 |
// wait_for_ext_suspend_completion(), but we can't call that while holding |
|
2843 |
// the Threads_lock. The above tests are sufficient for our purposes |
|
2844 |
// provided the walkability of the stack is stable - which it isn't |
|
2845 |
// 100% but close enough for most practical purposes. |
|
2846 |
throw_illegal_thread_state = true; |
|
2847 |
} else { |
|
2848 |
// Count all java activation, i.e., number of vframes |
|
2849 |
for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { |
|
2850 |
// Native frames are not counted |
|
2851 |
if (!vfst.method()->is_native()) count++; |
|
2852 |
} |
|
2853 |
} |
|
2854 |
} |
|
2855 |
||
2856 |
if (throw_illegal_thread_state) { |
|
2857 |
THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), |
|
2858 |
"this thread is not suspended"); |
|
2859 |
} |
|
2860 |
return count; |
|
2861 |
JVM_END |
|
2862 |
||
2863 |
// Consider: A better way to implement JVM_Interrupt() is to acquire |
|
2864 |
// Threads_lock to resolve the jthread into a Thread pointer, fetch |
|
2865 |
// Thread->platformevent, Thread->native_thr, Thread->parker, etc., |
|
2866 |
// drop Threads_lock, and the perform the unpark() and thr_kill() operations |
|
2867 |
// outside the critical section. Threads_lock is hot so we want to minimize |
|
2868 |
// the hold-time. A cleaner interface would be to decompose interrupt into |
|
2869 |
// two steps. The 1st phase, performed under Threads_lock, would return |
|
2870 |
// a closure that'd be invoked after Threads_lock was dropped. |
|
2871 |
// This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and |
|
2872 |
// admit spurious wakeups. |
|
2873 |
||
2874 |
JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) |
|
2875 |
JVMWrapper("JVM_Interrupt"); |
|
2876 |
||
2877 |
// Ensure that the C++ Thread and OSThread structures aren't freed before we operate |
|
2878 |
oop java_thread = JNIHandles::resolve_non_null(jthread); |
|
2879 |
MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); |
|
2880 |
// We need to re-resolve the java_thread, since a GC might have happened during the |
|
2881 |
// acquire of the lock |
|
2882 |
JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); |
|
2883 |
if (thr != NULL) { |
|
2884 |
Thread::interrupt(thr); |
|
2885 |
} |
|
2886 |
JVM_END |
|
2887 |
||
2888 |
||
2889 |
JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) |
|
2890 |
JVMWrapper("JVM_IsInterrupted"); |
|
2891 |
||
2892 |
// Ensure that the C++ Thread and OSThread structures aren't freed before we operate |
|
2893 |
oop java_thread = JNIHandles::resolve_non_null(jthread); |
|
2894 |
MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); |
|
2895 |
// We need to re-resolve the java_thread, since a GC might have happened during the |
|
2896 |
// acquire of the lock |
|
2897 |
JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); |
|
2898 |
if (thr == NULL) { |
|
2899 |
return JNI_FALSE; |
|
2900 |
} else { |
|
2901 |
return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); |
|
2902 |
} |
|
2903 |
JVM_END |
|
2904 |
||
2905 |
||
2906 |
// Return true iff the current thread has locked the object passed in |
|
2907 |
||
2908 |
JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) |
|
2909 |
JVMWrapper("JVM_HoldsLock"); |
|
2910 |
assert(THREAD->is_Java_thread(), "sanity check"); |
|
2911 |
if (obj == NULL) { |
|
2912 |
THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); |
|
2913 |
} |
|
2914 |
Handle h_obj(THREAD, JNIHandles::resolve(obj)); |
|
2915 |
return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); |
|
2916 |
JVM_END |
|
2917 |
||
2918 |
||
2919 |
JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) |
|
2920 |
JVMWrapper("JVM_DumpAllStacks"); |
|
2921 |
VM_PrintThreads op; |
|
2922 |
VMThread::execute(&op); |
|
2923 |
if (JvmtiExport::should_post_data_dump()) { |
|
2924 |
JvmtiExport::post_data_dump(); |
|
2925 |
} |
|
2926 |
JVM_END |
|
2927 |
||
2928 |
||
2929 |
// java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// |
|
2930 |
||
2931 |
static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { |
|
2932 |
assert(jthread->is_Java_thread(), "must be a Java thread"); |
|
2933 |
if (jthread->privileged_stack_top() == NULL) return false; |
|
2934 |
if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { |
|
2935 |
oop loader = jthread->privileged_stack_top()->class_loader(); |
|
2936 |
if (loader == NULL) return true; |
|
2937 |
bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); |
|
2938 |
if (trusted) return true; |
|
2939 |
} |
|
2940 |
return false; |
|
2941 |
} |
|
2942 |
||
2943 |
JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) |
|
2944 |
JVMWrapper("JVM_CurrentLoadedClass"); |
|
2945 |
ResourceMark rm(THREAD); |
|
2946 |
||
2947 |
for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { |
|
2948 |
// if a method in a class in a trusted loader is in a doPrivileged, return NULL |
|
2949 |
bool trusted = is_trusted_frame(thread, &vfst); |
|
2950 |
if (trusted) return NULL; |
|
2951 |
||
2952 |
methodOop m = vfst.method(); |
|
2953 |
if (!m->is_native()) { |
|
2954 |
klassOop holder = m->method_holder(); |
|
2955 |
oop loader = instanceKlass::cast(holder)->class_loader(); |
|
2956 |
if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
2957 |
return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); |
|
2958 |
} |
|
2959 |
} |
|
2960 |
} |
|
2961 |
return NULL; |
|
2962 |
JVM_END |
|
2963 |
||
2964 |
||
2965 |
JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) |
|
2966 |
JVMWrapper("JVM_CurrentClassLoader"); |
|
2967 |
ResourceMark rm(THREAD); |
|
2968 |
||
2969 |
for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { |
|
2970 |
||
2971 |
// if a method in a class in a trusted loader is in a doPrivileged, return NULL |
|
2972 |
bool trusted = is_trusted_frame(thread, &vfst); |
|
2973 |
if (trusted) return NULL; |
|
2974 |
||
2975 |
methodOop m = vfst.method(); |
|
2976 |
if (!m->is_native()) { |
|
2977 |
klassOop holder = m->method_holder(); |
|
2978 |
assert(holder->is_klass(), "just checking"); |
|
2979 |
oop loader = instanceKlass::cast(holder)->class_loader(); |
|
2980 |
if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
2981 |
return JNIHandles::make_local(env, loader); |
|
2982 |
} |
|
2983 |
} |
|
2984 |
} |
|
2985 |
return NULL; |
|
2986 |
JVM_END |
|
2987 |
||
2988 |
||
2989 |
// Utility object for collecting method holders walking down the stack |
|
2990 |
class KlassLink: public ResourceObj { |
|
2991 |
public: |
|
2992 |
KlassHandle klass; |
|
2993 |
KlassLink* next; |
|
2994 |
||
2995 |
KlassLink(KlassHandle k) { klass = k; next = NULL; } |
|
2996 |
}; |
|
2997 |
||
2998 |
||
2999 |
JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) |
|
3000 |
JVMWrapper("JVM_GetClassContext"); |
|
3001 |
ResourceMark rm(THREAD); |
|
3002 |
JvmtiVMObjectAllocEventCollector oam; |
|
3003 |
// Collect linked list of (handles to) method holders |
|
3004 |
KlassLink* first = NULL; |
|
3005 |
KlassLink* last = NULL; |
|
3006 |
int depth = 0; |
|
3007 |
||
3008 |
for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { |
|
3009 |
// Native frames are not returned |
|
3010 |
if (!vfst.method()->is_native()) { |
|
3011 |
klassOop holder = vfst.method()->method_holder(); |
|
3012 |
assert(holder->is_klass(), "just checking"); |
|
3013 |
depth++; |
|
3014 |
KlassLink* l = new KlassLink(KlassHandle(thread, holder)); |
|
3015 |
if (first == NULL) { |
|
3016 |
first = last = l; |
|
3017 |
} else { |
|
3018 |
last->next = l; |
|
3019 |
last = l; |
|
3020 |
} |
|
3021 |
} |
|
3022 |
} |
|
3023 |
||
3024 |
// Create result array of type [Ljava/lang/Class; |
|
3025 |
objArrayOop result = oopFactory::new_objArray(SystemDictionary::class_klass(), depth, CHECK_NULL); |
|
3026 |
// Fill in mirrors corresponding to method holders |
|
3027 |
int index = 0; |
|
3028 |
while (first != NULL) { |
|
3029 |
result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); |
|
3030 |
first = first->next; |
|
3031 |
} |
|
3032 |
assert(index == depth, "just checking"); |
|
3033 |
||
3034 |
return (jobjectArray) JNIHandles::make_local(env, result); |
|
3035 |
JVM_END |
|
3036 |
||
3037 |
||
3038 |
JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) |
|
3039 |
JVMWrapper("JVM_ClassDepth"); |
|
3040 |
ResourceMark rm(THREAD); |
|
3041 |
Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); |
|
3042 |
Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); |
|
3043 |
||
3044 |
const char* str = java_lang_String::as_utf8_string(class_name_str()); |
|
3045 |
symbolHandle class_name_sym = |
|
3046 |
symbolHandle(THREAD, SymbolTable::probe(str, (int)strlen(str))); |
|
3047 |
if (class_name_sym.is_null()) { |
|
3048 |
return -1; |
|
3049 |
} |
|
3050 |
||
3051 |
int depth = 0; |
|
3052 |
||
3053 |
for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { |
|
3054 |
if (!vfst.method()->is_native()) { |
|
3055 |
klassOop holder = vfst.method()->method_holder(); |
|
3056 |
assert(holder->is_klass(), "just checking"); |
|
3057 |
if (instanceKlass::cast(holder)->name() == class_name_sym()) { |
|
3058 |
return depth; |
|
3059 |
} |
|
3060 |
depth++; |
|
3061 |
} |
|
3062 |
} |
|
3063 |
return -1; |
|
3064 |
JVM_END |
|
3065 |
||
3066 |
||
3067 |
JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) |
|
3068 |
JVMWrapper("JVM_ClassLoaderDepth"); |
|
3069 |
ResourceMark rm(THREAD); |
|
3070 |
int depth = 0; |
|
3071 |
for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { |
|
3072 |
// if a method in a class in a trusted loader is in a doPrivileged, return -1 |
|
3073 |
bool trusted = is_trusted_frame(thread, &vfst); |
|
3074 |
if (trusted) return -1; |
|
3075 |
||
3076 |
methodOop m = vfst.method(); |
|
3077 |
if (!m->is_native()) { |
|
3078 |
klassOop holder = m->method_holder(); |
|
3079 |
assert(holder->is_klass(), "just checking"); |
|
3080 |
oop loader = instanceKlass::cast(holder)->class_loader(); |
|
3081 |
if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
3082 |
return depth; |
|
3083 |
} |
|
3084 |
depth++; |
|
3085 |
} |
|
3086 |
} |
|
3087 |
return -1; |
|
3088 |
JVM_END |
|
3089 |
||
3090 |
||
3091 |
// java.lang.Package //////////////////////////////////////////////////////////////// |
|
3092 |
||
3093 |
||
3094 |
JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) |
|
3095 |
JVMWrapper("JVM_GetSystemPackage"); |
|
3096 |
ResourceMark rm(THREAD); |
|
3097 |
JvmtiVMObjectAllocEventCollector oam; |
|
3098 |
char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); |
|
3099 |
oop result = ClassLoader::get_system_package(str, CHECK_NULL); |
|
3100 |
return (jstring) JNIHandles::make_local(result); |
|
3101 |
JVM_END |
|
3102 |
||
3103 |
||
3104 |
JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) |
|
3105 |
JVMWrapper("JVM_GetSystemPackages"); |
|
3106 |
JvmtiVMObjectAllocEventCollector oam; |
|
3107 |
objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); |
|
3108 |
return (jobjectArray) JNIHandles::make_local(result); |
|
3109 |
JVM_END |
|
3110 |
||
3111 |
||
3112 |
// ObjectInputStream /////////////////////////////////////////////////////////////// |
|
3113 |
||
3114 |
bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { |
|
3115 |
if (current_class == NULL) { |
|
3116 |
return true; |
|
3117 |
} |
|
3118 |
if ((current_class == field_class) || access.is_public()) { |
|
3119 |
return true; |
|
3120 |
} |
|
3121 |
||
3122 |
if (access.is_protected()) { |
|
3123 |
// See if current_class is a subclass of field_class |
|
3124 |
if (Klass::cast(current_class)->is_subclass_of(field_class)) { |
|
3125 |
return true; |
|
3126 |
} |
|
3127 |
} |
|
3128 |
||
3129 |
return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); |
|
3130 |
} |
|
3131 |
||
3132 |
||
3133 |
// JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 |
|
3134 |
JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) |
|
3135 |
JVMWrapper("JVM_AllocateNewObject"); |
|
3136 |
JvmtiVMObjectAllocEventCollector oam; |
|
3137 |
// Receiver is not used |
|
3138 |
oop curr_mirror = JNIHandles::resolve_non_null(currClass); |
|
3139 |
oop init_mirror = JNIHandles::resolve_non_null(initClass); |
|
3140 |
||
3141 |
// Cannot instantiate primitive types |
|
3142 |
if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { |
|
3143 |
ResourceMark rm(THREAD); |
|
3144 |
THROW_0(vmSymbols::java_lang_InvalidClassException()); |
|
3145 |
} |
|
3146 |
||
3147 |
// Arrays not allowed here, must use JVM_AllocateNewArray |
|
3148 |
if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || |
|
3149 |
Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { |
|
3150 |
ResourceMark rm(THREAD); |
|
3151 |
THROW_0(vmSymbols::java_lang_InvalidClassException()); |
|
3152 |
} |
|
3153 |
||
3154 |
instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); |
|
3155 |
instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); |
|
3156 |
||
3157 |
assert(curr_klass->is_subclass_of(init_klass()), "just checking"); |
|
3158 |
||
3159 |
// Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. |
|
3160 |
curr_klass->check_valid_for_instantiation(false, CHECK_NULL); |
|
3161 |
||
3162 |
// Make sure klass is initialized, since we are about to instantiate one of them. |
|
3163 |
curr_klass->initialize(CHECK_NULL); |
|
3164 |
||
3165 |
methodHandle m (THREAD, |
|
3166 |
init_klass->find_method(vmSymbols::object_initializer_name(), |
|
3167 |
vmSymbols::void_method_signature())); |
|
3168 |
if (m.is_null()) { |
|
3169 |
ResourceMark rm(THREAD); |
|
3170 |
THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), |
|
3171 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), |
|
3172 |
vmSymbols::object_initializer_name(), |
|
3173 |
vmSymbols::void_method_signature())); |
|
3174 |
} |
|
3175 |
||
3176 |
if (curr_klass == init_klass && !m->is_public()) { |
|
3177 |
// Calling the constructor for class 'curr_klass'. |
|
3178 |
// Only allow calls to a public no-arg constructor. |
|
3179 |
// This path corresponds to creating an Externalizable object. |
|
3180 |
THROW_0(vmSymbols::java_lang_IllegalAccessException()); |
|
3181 |
} |
|
3182 |
||
3183 |
if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { |
|
3184 |
// subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' |
|
3185 |
THROW_0(vmSymbols::java_lang_IllegalAccessException()); |
|
3186 |
} |
|
3187 |
||
3188 |
Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); |
|
3189 |
// Call constructor m. This might call a constructor higher up in the hierachy |
|
3190 |
JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); |
|
3191 |
||
3192 |
return JNIHandles::make_local(obj()); |
|
3193 |
JVM_END |
|
3194 |
||
3195 |
||
3196 |
JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) |
|
3197 |
JVMWrapper("JVM_AllocateNewArray"); |
|
3198 |
JvmtiVMObjectAllocEventCollector oam; |
|
3199 |
oop mirror = JNIHandles::resolve_non_null(currClass); |
|
3200 |
||
3201 |
if (java_lang_Class::is_primitive(mirror)) { |
|
3202 |
THROW_0(vmSymbols::java_lang_InvalidClassException()); |
|
3203 |
} |
|
3204 |
klassOop k = java_lang_Class::as_klassOop(mirror); |
|
3205 |
oop result; |
|
3206 |
||
3207 |
if (k->klass_part()->oop_is_typeArray()) { |
|
3208 |
// typeArray |
|
3209 |
result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
3210 |
} else if (k->klass_part()->oop_is_objArray()) { |
|
3211 |
// objArray |
|
3212 |
objArrayKlassHandle oak(THREAD, k); |
|
3213 |
oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
|
3214 |
result = oak->allocate(length, CHECK_NULL); |
|
3215 |
} else { |
|
3216 |
THROW_0(vmSymbols::java_lang_InvalidClassException()); |
|
3217 |
} |
|
3218 |
return JNIHandles::make_local(env, result); |
|
3219 |
JVM_END |
|
3220 |
||
3221 |
||
3222 |
// Return the first non-null class loader up the execution stack, or null |
|
3223 |
// if only code from the null class loader is on the stack. |
|
3224 |
||
3225 |
JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) |
|
3226 |
for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { |
|
3227 |
// UseNewReflection |
|
3228 |
vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection |
|
3229 |
klassOop holder = vfst.method()->method_holder(); |
|
3230 |
oop loader = instanceKlass::cast(holder)->class_loader(); |
|
3231 |
if (loader != NULL) { |
|
3232 |
return JNIHandles::make_local(env, loader); |
|
3233 |
} |
|
3234 |
} |
|
3235 |
return NULL; |
|
3236 |
JVM_END |
|
3237 |
||
3238 |
||
3239 |
// Load a class relative to the most recent class on the stack with a non-null |
|
3240 |
// classloader. |
|
3241 |
// This function has been deprecated and should not be considered part of the |
|
3242 |
// specified JVM interface. |
|
3243 |
||
3244 |
JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, |
|
3245 |
jclass currClass, jstring currClassName)) |
|
3246 |
JVMWrapper("JVM_LoadClass0"); |
|
3247 |
// Receiver is not used |
|
3248 |
ResourceMark rm(THREAD); |
|
3249 |
||
3250 |
// Class name argument is not guaranteed to be in internal format |
|
3251 |
Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); |
|
3252 |
Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); |
|
3253 |
||
3254 |
const char* str = java_lang_String::as_utf8_string(string()); |
|
3255 |
||
3256 |
if (str == NULL || (int)strlen(str) > symbolOopDesc::max_length()) { |
|
3257 |
// It's impossible to create this class; the name cannot fit |
|
3258 |
// into the constant pool. |
|
3259 |
THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); |
|
3260 |
} |
|
3261 |
||
3262 |
symbolHandle name = oopFactory::new_symbol_handle(str, CHECK_NULL); |
|
3263 |
Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
|
3264 |
// Find the most recent class on the stack with a non-null classloader |
|
3265 |
oop loader = NULL; |
|
3266 |
oop protection_domain = NULL; |
|
3267 |
if (curr_klass.is_null()) { |
|
3268 |
for (vframeStream vfst(thread); |
|
3269 |
!vfst.at_end() && loader == NULL; |
|
3270 |
vfst.next()) { |
|
3271 |
if (!vfst.method()->is_native()) { |
|
3272 |
klassOop holder = vfst.method()->method_holder(); |
|
3273 |
loader = instanceKlass::cast(holder)->class_loader(); |
|
3274 |
protection_domain = instanceKlass::cast(holder)->protection_domain(); |
|
3275 |
} |
|
3276 |
} |
|
3277 |
} else { |
|
3278 |
klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); |
|
3279 |
loader = instanceKlass::cast(curr_klass_oop)->class_loader(); |
|
3280 |
protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); |
|
3281 |
} |
|
3282 |
Handle h_loader(THREAD, loader); |
|
3283 |
Handle h_prot (THREAD, protection_domain); |
|
2269
ee9da33d43ab
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
2105
diff
changeset
|
3284 |
jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
ee9da33d43ab
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
2105
diff
changeset
|
3285 |
false, thread); |
ee9da33d43ab
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
2105
diff
changeset
|
3286 |
if (TraceClassResolution && result != NULL) { |
ee9da33d43ab
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
2105
diff
changeset
|
3287 |
trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
ee9da33d43ab
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
2105
diff
changeset
|
3288 |
} |
ee9da33d43ab
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
2105
diff
changeset
|
3289 |
return result; |
1 | 3290 |
JVM_END |
3291 |
||
3292 |
||
3293 |
// Array /////////////////////////////////////////////////////////////////////////////////////////// |
|
3294 |
||
3295 |
||
3296 |
// resolve array handle and check arguments |
|
3297 |
static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { |
|
3298 |
if (arr == NULL) { |
|
3299 |
THROW_0(vmSymbols::java_lang_NullPointerException()); |
|
3300 |
} |
|
3301 |
oop a = JNIHandles::resolve_non_null(arr); |
|
3302 |
if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { |
|
3303 |
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
|
3304 |
} |
|
3305 |
return arrayOop(a); |
|
3306 |
} |
|
3307 |
||
3308 |
||
3309 |
JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) |
|
3310 |
JVMWrapper("JVM_GetArrayLength"); |
|
3311 |
arrayOop a = check_array(env, arr, false, CHECK_0); |
|
3312 |
return a->length(); |
|
3313 |
JVM_END |
|
3314 |
||
3315 |
||
3316 |
JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) |
|
3317 |
JVMWrapper("JVM_Array_Get"); |
|
3318 |
JvmtiVMObjectAllocEventCollector oam; |
|
3319 |
arrayOop a = check_array(env, arr, false, CHECK_NULL); |
|
3320 |
jvalue value; |
|
3321 |
BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); |
|
3322 |
oop box = Reflection::box(&value, type, CHECK_NULL); |
|
3323 |
return JNIHandles::make_local(env, box); |
|
3324 |
JVM_END |
|
3325 |
||
3326 |
||
3327 |
JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) |
|
3328 |
JVMWrapper("JVM_GetPrimitiveArrayElement"); |
|
3329 |
jvalue value; |
|
3330 |
value.i = 0; // to initialize value before getting used in CHECK |
|
3331 |
arrayOop a = check_array(env, arr, true, CHECK_(value)); |
|
3332 |
assert(a->is_typeArray(), "just checking"); |
|
3333 |
BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); |
|
3334 |
BasicType wide_type = (BasicType) wCode; |
|
3335 |
if (type != wide_type) { |
|
3336 |
Reflection::widen(&value, type, wide_type, CHECK_(value)); |
|
3337 |
} |
|
3338 |
return value; |
|
3339 |
JVM_END |
|
3340 |
||
3341 |
||
3342 |
JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) |
|
3343 |
JVMWrapper("JVM_SetArrayElement"); |
|
3344 |
arrayOop a = check_array(env, arr, false, CHECK); |
|
3345 |
oop box = JNIHandles::resolve(val); |
|
3346 |
jvalue value; |
|
3347 |
value.i = 0; // to initialize value before getting used in CHECK |
|
3348 |
BasicType value_type; |
|
3349 |
if (a->is_objArray()) { |
|
3350 |
// Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array |
|
3351 |
value_type = Reflection::unbox_for_regular_object(box, &value); |
|
3352 |
} else { |
|
3353 |
value_type = Reflection::unbox_for_primitive(box, &value, CHECK); |
|
3354 |
} |
|
3355 |
Reflection::array_set(&value, a, index, value_type, CHECK); |
|
3356 |
JVM_END |
|
3357 |
||
3358 |
||
3359 |
JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) |
|
3360 |
JVMWrapper("JVM_SetPrimitiveArrayElement"); |
|
3361 |
arrayOop a = check_array(env, arr, true, CHECK); |
|
3362 |
assert(a->is_typeArray(), "just checking"); |
|
3363 |
BasicType value_type = (BasicType) vCode; |
|
3364 |
Reflection::array_set(&v, a, index, value_type, CHECK); |
|
3365 |
JVM_END |
|
3366 |
||
3367 |
||
3368 |
JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) |
|
3369 |
JVMWrapper("JVM_NewArray"); |
|
3370 |
JvmtiVMObjectAllocEventCollector oam; |
|
3371 |
oop element_mirror = JNIHandles::resolve(eltClass); |
|
3372 |
oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); |
|
3373 |
return JNIHandles::make_local(env, result); |
|
3374 |
JVM_END |
|
3375 |
||
3376 |
||
3377 |
JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) |
|
3378 |
JVMWrapper("JVM_NewMultiArray"); |
|
3379 |
JvmtiVMObjectAllocEventCollector oam; |
|
3380 |
arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); |
|
3381 |
oop element_mirror = JNIHandles::resolve(eltClass); |
|
3382 |
assert(dim_array->is_typeArray(), "just checking"); |
|
3383 |
oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); |
|
3384 |
return JNIHandles::make_local(env, result); |
|
3385 |
JVM_END |
|
3386 |
||
3387 |
||
3388 |
// Networking library support //////////////////////////////////////////////////////////////////// |
|
3389 |
||
3390 |
JVM_LEAF(jint, JVM_InitializeSocketLibrary()) |
|
3391 |
JVMWrapper("JVM_InitializeSocketLibrary"); |
|
3392 |
return hpi::initialize_socket_library(); |
|
3393 |
JVM_END |
|
3394 |
||
3395 |
||
3396 |
JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) |
|
3397 |
JVMWrapper("JVM_Socket"); |
|
3398 |
return hpi::socket(domain, type, protocol); |
|
3399 |
JVM_END |
|
3400 |
||
3401 |
||
3402 |
JVM_LEAF(jint, JVM_SocketClose(jint fd)) |
|
3403 |
JVMWrapper2("JVM_SocketClose (0x%x)", fd); |
|
3404 |
//%note jvm_r6 |
|
3405 |
return hpi::socket_close(fd); |
|
3406 |
JVM_END |
|
3407 |
||
3408 |
||
3409 |
JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) |
|
3410 |
JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); |
|
3411 |
//%note jvm_r6 |
|
3412 |
return hpi::socket_shutdown(fd, howto); |
|
3413 |
JVM_END |
|
3414 |
||
3415 |
||
3416 |
JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) |
|
3417 |
JVMWrapper2("JVM_Recv (0x%x)", fd); |
|
3418 |
//%note jvm_r6 |
|
3419 |
return hpi::recv(fd, buf, nBytes, flags); |
|
3420 |
JVM_END |
|
3421 |
||
3422 |
||
3423 |
JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) |
|
3424 |
JVMWrapper2("JVM_Send (0x%x)", fd); |
|
3425 |
//%note jvm_r6 |
|
3426 |
return hpi::send(fd, buf, nBytes, flags); |
|
3427 |
JVM_END |
|
3428 |
||
3429 |
||
3430 |
JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) |
|
3431 |
JVMWrapper2("JVM_Timeout (0x%x)", fd); |
|
3432 |
//%note jvm_r6 |
|
3433 |
return hpi::timeout(fd, timeout); |
|
3434 |
JVM_END |
|
3435 |
||
3436 |
||
3437 |
JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) |
|
3438 |
JVMWrapper2("JVM_Listen (0x%x)", fd); |
|
3439 |
//%note jvm_r6 |
|
3440 |
return hpi::listen(fd, count); |
|
3441 |
JVM_END |
|
3442 |
||
3443 |
||
3444 |
JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) |
|
3445 |
JVMWrapper2("JVM_Connect (0x%x)", fd); |
|
3446 |
//%note jvm_r6 |
|
3447 |
return hpi::connect(fd, him, len); |
|
3448 |
JVM_END |
|
3449 |
||
3450 |
||
3451 |
JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) |
|
3452 |
JVMWrapper2("JVM_Bind (0x%x)", fd); |
|
3453 |
//%note jvm_r6 |
|
3454 |
return hpi::bind(fd, him, len); |
|
3455 |
JVM_END |
|
3456 |
||
3457 |
||
3458 |
JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) |
|
3459 |
JVMWrapper2("JVM_Accept (0x%x)", fd); |
|
3460 |
//%note jvm_r6 |
|
3461 |
return hpi::accept(fd, him, (int *)len); |
|
3462 |
JVM_END |
|
3463 |
||
3464 |
||
3465 |
JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) |
|
3466 |
JVMWrapper2("JVM_RecvFrom (0x%x)", fd); |
|
3467 |
//%note jvm_r6 |
|
3468 |
return hpi::recvfrom(fd, buf, nBytes, flags, from, fromlen); |
|
3469 |
JVM_END |
|
3470 |
||
3471 |
||
3472 |
JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) |
|
3473 |
JVMWrapper2("JVM_GetSockName (0x%x)", fd); |
|
3474 |
//%note jvm_r6 |
|
3475 |
return hpi::get_sock_name(fd, him, len); |
|
3476 |
JVM_END |
|
3477 |
||
3478 |
||
3479 |
JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) |
|
3480 |
JVMWrapper2("JVM_SendTo (0x%x)", fd); |
|
3481 |
//%note jvm_r6 |
|
3482 |
return hpi::sendto(fd, buf, len, flags, to, tolen); |
|
3483 |
JVM_END |
|
3484 |
||
3485 |
||
3486 |
JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) |
|
3487 |
JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); |
|
3488 |
//%note jvm_r6 |
|
3489 |
return hpi::socket_available(fd, pbytes); |
|
3490 |
JVM_END |
|
3491 |
||
3492 |
||
3493 |
JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) |
|
3494 |
JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); |
|
3495 |
//%note jvm_r6 |
|
3496 |
return hpi::get_sock_opt(fd, level, optname, optval, optlen); |
|
3497 |
JVM_END |
|
3498 |
||
3499 |
||
3500 |
JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) |
|
3501 |
JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); |
|
3502 |
//%note jvm_r6 |
|
3503 |
return hpi::set_sock_opt(fd, level, optname, optval, optlen); |
|
3504 |
JVM_END |
|
3505 |
||
3506 |
JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
|
3507 |
JVMWrapper("JVM_GetHostName"); |
|
3508 |
return hpi::get_host_name(name, namelen); |
|
3509 |
JVM_END |
|
3510 |
||
3511 |
#ifdef _WINDOWS |
|
3512 |
||
3513 |
JVM_LEAF(struct hostent*, JVM_GetHostByAddr(const char* name, int len, int type)) |
|
3514 |
JVMWrapper("JVM_GetHostByAddr"); |
|
3515 |
return hpi::get_host_by_addr(name, len, type); |
|
3516 |
JVM_END |
|
3517 |
||
3518 |
||
3519 |
JVM_LEAF(struct hostent*, JVM_GetHostByName(char* name)) |
|
3520 |
JVMWrapper("JVM_GetHostByName"); |
|
3521 |
return hpi::get_host_by_name(name); |
|
3522 |
JVM_END |
|
3523 |
||
3524 |
||
3525 |
JVM_LEAF(struct protoent*, JVM_GetProtoByName(char* name)) |
|
3526 |
JVMWrapper("JVM_GetProtoByName"); |
|
3527 |
return hpi::get_proto_by_name(name); |
|
3528 |
JVM_END |
|
3529 |
||
3530 |
#endif |
|
3531 |
||
3532 |
// Library support /////////////////////////////////////////////////////////////////////////// |
|
3533 |
||
3534 |
JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) |
|
3535 |
//%note jvm_ct |
|
3536 |
JVMWrapper2("JVM_LoadLibrary (%s)", name); |
|
3537 |
char ebuf[1024]; |
|
3538 |
void *load_result; |
|
3539 |
{ |
|
3540 |
ThreadToNativeFromVM ttnfvm(thread); |
|
3541 |
load_result = hpi::dll_load(name, ebuf, sizeof ebuf); |
|
3542 |
} |
|
3543 |
if (load_result == NULL) { |
|
3544 |
char msg[1024]; |
|
3545 |
jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); |
|
3546 |
// Since 'ebuf' may contain a string encoded using |
|
3547 |
// platform encoding scheme, we need to pass |
|
3548 |
// Exceptions::unsafe_to_utf8 to the new_exception method |
|
3549 |
// as the last argument. See bug 6367357. |
|
3550 |
Handle h_exception = |
|
3551 |
Exceptions::new_exception(thread, |
|
3552 |
vmSymbols::java_lang_UnsatisfiedLinkError(), |
|
3553 |
msg, Exceptions::unsafe_to_utf8); |
|
3554 |
||
3555 |
THROW_HANDLE_0(h_exception); |
|
3556 |
} |
|
3557 |
return load_result; |
|
3558 |
JVM_END |
|
3559 |
||
3560 |
||
3561 |
JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) |
|
3562 |
JVMWrapper("JVM_UnloadLibrary"); |
|
3563 |
hpi::dll_unload(handle); |
|
3564 |
JVM_END |
|
3565 |
||
3566 |
||
3567 |
JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) |
|
3568 |
JVMWrapper2("JVM_FindLibraryEntry (%s)", name); |
|
3569 |
return hpi::dll_lookup(handle, name); |
|
3570 |
JVM_END |
|
3571 |
||
3572 |
// Floating point support //////////////////////////////////////////////////////////////////// |
|
3573 |
||
3574 |
JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) |
|
3575 |
JVMWrapper("JVM_IsNaN"); |
|
3576 |
return g_isnan(a); |
|
3577 |
JVM_END |
|
3578 |
||
3579 |
||
3580 |
||
3581 |
// JNI version /////////////////////////////////////////////////////////////////////////////// |
|
3582 |
||
3583 |
JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) |
|
3584 |
JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); |
|
3585 |
return Threads::is_supported_jni_version_including_1_1(version); |
|
3586 |
JVM_END |
|
3587 |
||
3588 |
||
3589 |
// String support /////////////////////////////////////////////////////////////////////////// |
|
3590 |
||
3591 |
JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) |
|
3592 |
JVMWrapper("JVM_InternString"); |
|
3593 |
JvmtiVMObjectAllocEventCollector oam; |
|
3594 |
if (str == NULL) return NULL; |
|
3595 |
oop string = JNIHandles::resolve_non_null(str); |
|
3596 |
oop result = StringTable::intern(string, CHECK_NULL); |
|
3597 |
return (jstring) JNIHandles::make_local(env, result); |
|
3598 |
JVM_END |
|
3599 |
||
3600 |
||
3601 |
// Raw monitor support ////////////////////////////////////////////////////////////////////// |
|
3602 |
||
3603 |
// The lock routine below calls lock_without_safepoint_check in order to get a raw lock |
|
3604 |
// without interfering with the safepoint mechanism. The routines are not JVM_LEAF because |
|
3605 |
// they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check |
|
3606 |
// that only works with java threads. |
|
3607 |
||
3608 |
||
3609 |
JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { |
|
3610 |
VM_Exit::block_if_vm_exited(); |
|
3611 |
JVMWrapper("JVM_RawMonitorCreate"); |
|
3612 |
return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); |
|
3613 |
} |
|
3614 |
||
3615 |
||
3616 |
JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { |
|
3617 |
VM_Exit::block_if_vm_exited(); |
|
3618 |
JVMWrapper("JVM_RawMonitorDestroy"); |
|
3619 |
delete ((Mutex*) mon); |
|
3620 |
} |
|
3621 |
||
3622 |
||
3623 |
JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { |
|
3624 |
VM_Exit::block_if_vm_exited(); |
|
3625 |
JVMWrapper("JVM_RawMonitorEnter"); |
|
3626 |
((Mutex*) mon)->jvm_raw_lock(); |
|
3627 |
return 0; |
|
3628 |
} |
|
3629 |
||
3630 |
||
3631 |
JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { |
|
3632 |
VM_Exit::block_if_vm_exited(); |
|
3633 |
JVMWrapper("JVM_RawMonitorExit"); |
|
3634 |
((Mutex*) mon)->jvm_raw_unlock(); |
|
3635 |
} |
|
3636 |
||
3637 |
||
3638 |
// Support for Serialization |
|
3639 |
||
3640 |
typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); |
|
3641 |
typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); |
|
3642 |
typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); |
|
3643 |
typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); |
|
3644 |
||
3645 |
static IntBitsToFloatFn int_bits_to_float_fn = NULL; |
|
3646 |
static LongBitsToDoubleFn long_bits_to_double_fn = NULL; |
|
3647 |
static FloatToIntBitsFn float_to_int_bits_fn = NULL; |
|
3648 |
static DoubleToLongBitsFn double_to_long_bits_fn = NULL; |
|
3649 |
||
3650 |
||
3651 |
void initialize_converter_functions() { |
|
3652 |
if (JDK_Version::is_gte_jdk14x_version()) { |
|
3653 |
// These functions only exist for compatibility with 1.3.1 and earlier |
|
3654 |
return; |
|
3655 |
} |
|
3656 |
||
3657 |
// called from universe_post_init() |
|
3658 |
assert( |
|
3659 |
int_bits_to_float_fn == NULL && |
|
3660 |
long_bits_to_double_fn == NULL && |
|
3661 |
float_to_int_bits_fn == NULL && |
|
3662 |
double_to_long_bits_fn == NULL , |
|
3663 |
"initialization done twice" |
|
3664 |
); |
|
3665 |
// initialize |
|
3666 |
int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); |
|
3667 |
long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); |
|
3668 |
float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); |
|
3669 |
double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); |
|
3670 |
// verify |
|
3671 |
assert( |
|
3672 |
int_bits_to_float_fn != NULL && |
|
3673 |
long_bits_to_double_fn != NULL && |
|
3674 |
float_to_int_bits_fn != NULL && |
|
3675 |
double_to_long_bits_fn != NULL , |
|
3676 |
"initialization failed" |
|
3677 |
); |
|
3678 |
} |
|
3679 |
||
3680 |
||
3681 |
// Serialization |
|
3682 |
JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, |
|
3683 |
jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) |
|
3684 |
assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); |
|
3685 |
||
3686 |
typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); |
|
3687 |
typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); |
|
3688 |
typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); |
|
3689 |
oop o = JNIHandles::resolve(obj); |
|
3690 |
||
3691 |
if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { |
|
3692 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
3693 |
} |
|
3694 |
||
3695 |
jsize nfids = fids->length(); |
|
3696 |
if (nfids == 0) return; |
|
3697 |
||
3698 |
if (tcodes->length() < nfids) { |
|
3699 |
THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
|
3700 |
} |
|
3701 |
||
3702 |
jsize off = 0; |
|
3703 |
/* loop through fields, setting values */ |
|
3704 |
for (jsize i = 0; i < nfids; i++) { |
|
3705 |
jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); |
|
3706 |
int field_offset; |
|
3707 |
if (fid != NULL) { |
|
3708 |
// NULL is a legal value for fid, but retrieving the field offset |
|
3709 |
// trigger assertion in that case |
|
3710 |
field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); |
|
3711 |
} |
|
3712 |
||
3713 |
switch (tcodes->char_at(i)) { |
|
3714 |
case 'Z': |
|
3715 |
if (fid != NULL) { |
|
3716 |
jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; |
|
3717 |
o->bool_field_put(field_offset, val); |
|
3718 |
} |
|
3719 |
off++; |
|
3720 |
break; |
|
3721 |
||
3722 |
case 'B': |
|
3723 |
if (fid != NULL) { |
|
3724 |
o->byte_field_put(field_offset, dbuf->byte_at(off)); |
|
3725 |
} |
|
3726 |
off++; |
|
3727 |
break; |
|
3728 |
||
3729 |
case 'C': |
|
3730 |
if (fid != NULL) { |
|
3731 |
jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) |
|
3732 |
+ ((dbuf->byte_at(off + 1) & 0xFF) << 0); |
|
3733 |
o->char_field_put(field_offset, val); |
|
3734 |
} |
|
3735 |
off += 2; |
|
3736 |
break; |
|
3737 |
||
3738 |
case 'S': |
|
3739 |
if (fid != NULL) { |
|
3740 |
jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) |
|
3741 |
+ ((dbuf->byte_at(off + 1) & 0xFF) << 0); |
|
3742 |
o->short_field_put(field_offset, val); |
|
3743 |
} |
|
3744 |
off += 2; |
|
3745 |
break; |
|
3746 |
||
3747 |
case 'I': |
|
3748 |
if (fid != NULL) { |
|
3749 |
jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) |
|
3750 |
+ ((dbuf->byte_at(off + 1) & 0xFF) << 16) |
|
3751 |
+ ((dbuf->byte_at(off + 2) & 0xFF) << 8) |
|
3752 |
+ ((dbuf->byte_at(off + 3) & 0xFF) << 0); |
|
3753 |
o->int_field_put(field_offset, ival); |
|
3754 |
} |
|
3755 |
off += 4; |
|
3756 |
break; |
|
3757 |
||
3758 |
case 'F': |
|
3759 |
if (fid != NULL) { |
|
3760 |
jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) |
|
3761 |
+ ((dbuf->byte_at(off + 1) & 0xFF) << 16) |
|
3762 |
+ ((dbuf->byte_at(off + 2) & 0xFF) << 8) |
|
3763 |
+ ((dbuf->byte_at(off + 3) & 0xFF) << 0); |
|
3764 |
jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); |
|
3765 |
o->float_field_put(field_offset, fval); |
|
3766 |
} |
|
3767 |
off += 4; |
|
3768 |
break; |
|
3769 |
||
3770 |
case 'J': |
|
3771 |
if (fid != NULL) { |
|
3772 |
jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) |
|
3773 |
+ (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) |
|
3774 |
+ (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) |
|
3775 |
+ (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) |
|
3776 |
+ (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) |
|
3777 |
+ (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) |
|
3778 |
+ (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) |
|
3779 |
+ (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); |
|
3780 |
o->long_field_put(field_offset, lval); |
|
3781 |
} |
|
3782 |
off += 8; |
|
3783 |
break; |
|
3784 |
||
3785 |
case 'D': |
|
3786 |
if (fid != NULL) { |
|
3787 |
jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) |
|
3788 |
+ (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) |
|
3789 |
+ (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) |
|
3790 |
+ (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) |
|
3791 |
+ (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) |
|
3792 |
+ (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) |
|
3793 |
+ (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) |
|
3794 |
+ (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); |
|
3795 |
jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); |
|
3796 |
o->double_field_put(field_offset, dval); |
|
3797 |
} |
|
3798 |
off += 8; |
|
3799 |
break; |
|
3800 |
||
3801 |
default: |
|
3802 |
// Illegal typecode |
|
3803 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); |
|
3804 |
} |
|
3805 |
} |
|
3806 |
JVM_END |
|
3807 |
||
3808 |
||
3809 |
JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, |
|
3810 |
jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) |
|
3811 |
assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); |
|
3812 |
||
3813 |
typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); |
|
3814 |
typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); |
|
3815 |
typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); |
|
3816 |
oop o = JNIHandles::resolve(obj); |
|
3817 |
||
3818 |
if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { |
|
3819 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
3820 |
} |
|
3821 |
||
3822 |
jsize nfids = fids->length(); |
|
3823 |
if (nfids == 0) return; |
|
3824 |
||
3825 |
if (tcodes->length() < nfids) { |
|
3826 |
THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
|
3827 |
} |
|
3828 |
||
3829 |
/* loop through fields, fetching values */ |
|
3830 |
jsize off = 0; |
|
3831 |
for (jsize i = 0; i < nfids; i++) { |
|
3832 |
jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); |
|
3833 |
if (fid == NULL) { |
|
3834 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
3835 |
} |
|
3836 |
int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); |
|
3837 |
||
3838 |
switch (tcodes->char_at(i)) { |
|
3839 |
case 'Z': |
|
3840 |
{ |
|
3841 |
jboolean val = o->bool_field(field_offset); |
|
3842 |
dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); |
|
3843 |
} |
|
3844 |
break; |
|
3845 |
||
3846 |
case 'B': |
|
3847 |
dbuf->byte_at_put(off++, o->byte_field(field_offset)); |
|
3848 |
break; |
|
3849 |
||
3850 |
case 'C': |
|
3851 |
{ |
|
3852 |
jchar val = o->char_field(field_offset); |
|
3853 |
dbuf->byte_at_put(off++, (val >> 8) & 0xFF); |
|
3854 |
dbuf->byte_at_put(off++, (val >> 0) & 0xFF); |
|
3855 |
} |
|
3856 |
break; |
|
3857 |
||
3858 |
case 'S': |
|
3859 |
{ |
|
3860 |
jshort val = o->short_field(field_offset); |
|
3861 |
dbuf->byte_at_put(off++, (val >> 8) & 0xFF); |
|
3862 |
dbuf->byte_at_put(off++, (val >> 0) & 0xFF); |
|
3863 |
} |
|
3864 |
break; |
|
3865 |
||
3866 |
case 'I': |
|
3867 |
{ |
|
3868 |
jint val = o->int_field(field_offset); |
|
3869 |
dbuf->byte_at_put(off++, (val >> 24) & 0xFF); |
|
3870 |
dbuf->byte_at_put(off++, (val >> 16) & 0xFF); |
|
3871 |
dbuf->byte_at_put(off++, (val >> 8) & 0xFF); |
|
3872 |
dbuf->byte_at_put(off++, (val >> 0) & 0xFF); |
|
3873 |
} |
|
3874 |
break; |
|
3875 |
||
3876 |
case 'F': |
|
3877 |
{ |
|
3878 |
jfloat fval = o->float_field(field_offset); |
|
3879 |
jint ival = (*float_to_int_bits_fn)(env, NULL, fval); |
|
3880 |
dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); |
|
3881 |
dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); |
|
3882 |
dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); |
|
3883 |
dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); |
|
3884 |
} |
|
3885 |
break; |
|
3886 |
||
3887 |
case 'J': |
|
3888 |
{ |
|
3889 |
jlong val = o->long_field(field_offset); |
|
3890 |
dbuf->byte_at_put(off++, (val >> 56) & 0xFF); |
|
3891 |
dbuf->byte_at_put(off++, (val >> 48) & 0xFF); |
|
3892 |
dbuf->byte_at_put(off++, (val >> 40) & 0xFF); |
|
3893 |
dbuf->byte_at_put(off++, (val >> 32) & 0xFF); |
|
3894 |
dbuf->byte_at_put(off++, (val >> 24) & 0xFF); |
|
3895 |
dbuf->byte_at_put(off++, (val >> 16) & 0xFF); |
|
3896 |
dbuf->byte_at_put(off++, (val >> 8) & 0xFF); |
|
3897 |
dbuf->byte_at_put(off++, (val >> 0) & 0xFF); |
|
3898 |
} |
|
3899 |
break; |
|
3900 |
||
3901 |
case 'D': |
|
3902 |
{ |
|
3903 |
jdouble dval = o->double_field(field_offset); |
|
3904 |
jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); |
|
3905 |
dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); |
|
3906 |
dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); |
|
3907 |
dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); |
|
3908 |
dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); |
|
3909 |
dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); |
|
3910 |
dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); |
|
3911 |
dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); |
|
3912 |
dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); |
|
3913 |
} |
|
3914 |
break; |
|
3915 |
||
3916 |
default: |
|
3917 |
// Illegal typecode |
|
3918 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); |
|
3919 |
} |
|
3920 |
} |
|
3921 |
JVM_END |
|
3922 |
||
3923 |
||
3924 |
// Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// |
|
3925 |
||
3926 |
jclass find_class_from_class_loader(JNIEnv* env, symbolHandle name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
|
3927 |
// Security Note: |
|
3928 |
// The Java level wrapper will perform the necessary security check allowing |
|
3929 |
// us to pass the NULL as the initiating class loader. |
|
3930 |
klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
3578
411436f0a4a2
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
3575
diff
changeset
|
3931 |
|
1 | 3932 |
KlassHandle klass_handle(THREAD, klass); |
3933 |
// Check if we should initialize the class |
|
3934 |
if (init && klass_handle->oop_is_instance()) { |
|
3935 |
klass_handle->initialize(CHECK_NULL); |
|
3936 |
} |
|
3937 |
return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); |
|
3938 |
} |
|
3939 |
||
3940 |
||
3941 |
// Internal SQE debugging support /////////////////////////////////////////////////////////// |
|
3942 |
||
3943 |
#ifndef PRODUCT |
|
3944 |
||
3945 |
extern "C" { |
|
3946 |
JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); |
|
3947 |
JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); |
|
3948 |
JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); |
|
3949 |
} |
|
3950 |
||
3951 |
JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) |
|
3952 |
JVMWrapper("JVM_AccessBoolVMFlag"); |
|
3953 |
return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); |
|
3954 |
JVM_END |
|
3955 |
||
3956 |
JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) |
|
3957 |
JVMWrapper("JVM_AccessVMIntFlag"); |
|
3958 |
intx v; |
|
3959 |
jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); |
|
3960 |
*value = (jint)v; |
|
3961 |
return result; |
|
3962 |
JVM_END |
|
3963 |
||
3964 |
||
3965 |
JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) |
|
3966 |
JVMWrapper("JVM_VMBreakPoint"); |
|
3967 |
oop the_obj = JNIHandles::resolve(obj); |
|
3968 |
BREAKPOINT; |
|
3969 |
JVM_END |
|
3970 |
||
3971 |
||
3972 |
#endif |
|
3973 |
||
3974 |
||
3975 |
//--------------------------------------------------------------------------- |
|
3976 |
// |
|
3977 |
// Support for old native code-based reflection (pre-JDK 1.4) |
|
3978 |
// Disabled by default in the product build. |
|
3979 |
// |
|
3980 |
// See reflection.hpp for information on SUPPORT_OLD_REFLECTION |
|
3981 |
// |
|
3982 |
//--------------------------------------------------------------------------- |
|
3983 |
||
3984 |
#ifdef SUPPORT_OLD_REFLECTION |
|
3985 |
||
3986 |
JVM_ENTRY(jobjectArray, JVM_GetClassFields(JNIEnv *env, jclass cls, jint which)) |
|
3987 |
JVMWrapper("JVM_GetClassFields"); |
|
3988 |
JvmtiVMObjectAllocEventCollector oam; |
|
3989 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
3990 |
objArrayOop result = Reflection::reflect_fields(mirror, which, CHECK_NULL); |
|
3991 |
return (jobjectArray) JNIHandles::make_local(env, result); |
|
3992 |
JVM_END |
|
3993 |
||
3994 |
||
3995 |
JVM_ENTRY(jobjectArray, JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which)) |
|
3996 |
JVMWrapper("JVM_GetClassMethods"); |
|
3997 |
JvmtiVMObjectAllocEventCollector oam; |
|
3998 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
3999 |
objArrayOop result = Reflection::reflect_methods(mirror, which, CHECK_NULL); |
|
4000 |
//%note jvm_r4 |
|
4001 |
return (jobjectArray) JNIHandles::make_local(env, result); |
|
4002 |
JVM_END |
|
4003 |
||
4004 |
||
4005 |
JVM_ENTRY(jobjectArray, JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which)) |
|
4006 |
JVMWrapper("JVM_GetClassConstructors"); |
|
4007 |
JvmtiVMObjectAllocEventCollector oam; |
|
4008 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
4009 |
objArrayOop result = Reflection::reflect_constructors(mirror, which, CHECK_NULL); |
|
4010 |
//%note jvm_r4 |
|
4011 |
return (jobjectArray) JNIHandles::make_local(env, result); |
|
4012 |
JVM_END |
|
4013 |
||
4014 |
||
4015 |
JVM_ENTRY(jobject, JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which)) |
|
4016 |
JVMWrapper("JVM_GetClassField"); |
|
4017 |
JvmtiVMObjectAllocEventCollector oam; |
|
4018 |
if (name == NULL) return NULL; |
|
4019 |
Handle str (THREAD, JNIHandles::resolve_non_null(name)); |
|
4020 |
||
4021 |
const char* cstr = java_lang_String::as_utf8_string(str()); |
|
4022 |
symbolHandle field_name = |
|
4023 |
symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); |
|
4024 |
if (field_name.is_null()) { |
|
4025 |
THROW_0(vmSymbols::java_lang_NoSuchFieldException()); |
|
4026 |
} |
|
4027 |
||
4028 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
4029 |
oop result = Reflection::reflect_field(mirror, field_name(), which, CHECK_NULL); |
|
4030 |
if (result == NULL) { |
|
4031 |
THROW_0(vmSymbols::java_lang_NoSuchFieldException()); |
|
4032 |
} |
|
4033 |
return JNIHandles::make_local(env, result); |
|
4034 |
JVM_END |
|
4035 |
||
4036 |
||
4037 |
JVM_ENTRY(jobject, JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, jint which)) |
|
4038 |
JVMWrapper("JVM_GetClassMethod"); |
|
4039 |
JvmtiVMObjectAllocEventCollector oam; |
|
4040 |
if (name == NULL) { |
|
4041 |
THROW_0(vmSymbols::java_lang_NullPointerException()); |
|
4042 |
} |
|
4043 |
Handle str (THREAD, JNIHandles::resolve_non_null(name)); |
|
4044 |
||
4045 |
const char* cstr = java_lang_String::as_utf8_string(str()); |
|
4046 |
symbolHandle method_name = |
|
4047 |
symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); |
|
4048 |
if (method_name.is_null()) { |
|
4049 |
THROW_0(vmSymbols::java_lang_NoSuchMethodException()); |
|
4050 |
} |
|
4051 |
||
4052 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
4053 |
objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); |
|
4054 |
oop result = Reflection::reflect_method(mirror, method_name, tarray, |
|
4055 |
which, CHECK_NULL); |
|
4056 |
if (result == NULL) { |
|
4057 |
THROW_0(vmSymbols::java_lang_NoSuchMethodException()); |
|
4058 |
} |
|
4059 |
return JNIHandles::make_local(env, result); |
|
4060 |
JVM_END |
|
4061 |
||
4062 |
||
4063 |
JVM_ENTRY(jobject, JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, jint which)) |
|
4064 |
JVMWrapper("JVM_GetClassConstructor"); |
|
4065 |
JvmtiVMObjectAllocEventCollector oam; |
|
4066 |
oop mirror = JNIHandles::resolve_non_null(cls); |
|
4067 |
objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); |
|
4068 |
oop result = Reflection::reflect_constructor(mirror, tarray, which, CHECK_NULL); |
|
4069 |
if (result == NULL) { |
|
4070 |
THROW_0(vmSymbols::java_lang_NoSuchMethodException()); |
|
4071 |
} |
|
4072 |
return (jobject) JNIHandles::make_local(env, result); |
|
4073 |
JVM_END |
|
4074 |
||
4075 |
||
4076 |
// Instantiation /////////////////////////////////////////////////////////////////////////////// |
|
4077 |
||
4078 |
JVM_ENTRY(jobject, JVM_NewInstance(JNIEnv *env, jclass cls)) |
|
4079 |
JVMWrapper("JVM_NewInstance"); |
|
4080 |
Handle mirror(THREAD, JNIHandles::resolve_non_null(cls)); |
|
4081 |
||
4082 |
methodOop resolved_constructor = java_lang_Class::resolved_constructor(mirror()); |
|
4083 |
if (resolved_constructor == NULL) { |
|
4084 |
klassOop k = java_lang_Class::as_klassOop(mirror()); |
|
4085 |
// The java.lang.Class object caches a resolved constructor if all the checks |
|
4086 |
// below were done successfully and a constructor was found. |
|
4087 |
||
4088 |
// Do class based checks |
|
4089 |
if (java_lang_Class::is_primitive(mirror())) { |
|
4090 |
const char* msg = ""; |
|
4091 |
if (mirror == Universe::bool_mirror()) msg = "java/lang/Boolean"; |
|
4092 |
else if (mirror == Universe::char_mirror()) msg = "java/lang/Character"; |
|
4093 |
else if (mirror == Universe::float_mirror()) msg = "java/lang/Float"; |
|
4094 |
else if (mirror == Universe::double_mirror()) msg = "java/lang/Double"; |
|
4095 |
else if (mirror == Universe::byte_mirror()) msg = "java/lang/Byte"; |
|
4096 |
else if (mirror == Universe::short_mirror()) msg = "java/lang/Short"; |
|
4097 |
else if (mirror == Universe::int_mirror()) msg = "java/lang/Integer"; |
|
4098 |
else if (mirror == Universe::long_mirror()) msg = "java/lang/Long"; |
|
4099 |
THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), msg); |
|
4100 |
} |
|
4101 |
||
4102 |
// Check whether we are allowed to instantiate this class |
|
4103 |
Klass::cast(k)->check_valid_for_instantiation(false, CHECK_NULL); // Array classes get caught here |
|
4104 |
instanceKlassHandle klass(THREAD, k); |
|
4105 |
// Make sure class is initialized (also so all methods are rewritten) |
|
4106 |
klass->initialize(CHECK_NULL); |
|
4107 |
||
4108 |
// Lookup default constructor |
|
4109 |
resolved_constructor = klass->find_method(vmSymbols::object_initializer_name(), vmSymbols::void_method_signature()); |
|
4110 |
if (resolved_constructor == NULL) { |
|
4111 |
ResourceMark rm(THREAD); |
|
4112 |
THROW_MSG_0(vmSymbols::java_lang_InstantiationException(), klass->external_name()); |
|
4113 |
} |
|
4114 |
||
4115 |
// Cache result in java.lang.Class object. Does not have to be MT safe. |
|
4116 |
java_lang_Class::set_resolved_constructor(mirror(), resolved_constructor); |
|
4117 |
} |
|
4118 |
||
4119 |
assert(resolved_constructor != NULL, "sanity check"); |
|
4120 |
methodHandle constructor = methodHandle(THREAD, resolved_constructor); |
|
4121 |
||
4122 |
// We have an initialized instanceKlass with a default constructor |
|
4123 |
instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); |
|
4124 |
assert(klass->is_initialized() || klass->is_being_initialized(), "sanity check"); |
|
4125 |
||
4126 |
// Do security check |
|
4127 |
klassOop caller_klass = NULL; |
|
4128 |
if (UsePrivilegedStack) { |
|
4129 |
caller_klass = thread->security_get_caller_class(2); |
|
4130 |
||
4131 |
if (!Reflection::verify_class_access(caller_klass, klass(), false) || |
|
4132 |
!Reflection::verify_field_access(caller_klass, |
|
4133 |
klass(), |
|
4134 |
klass(), |
|
4135 |
constructor->access_flags(), |
|
4136 |
false, |
|
4137 |
true)) { |
|
4138 |
ResourceMark rm(THREAD); |
|
4139 |
THROW_MSG_0(vmSymbols::java_lang_IllegalAccessException(), klass->external_name()); |
|
4140 |
} |
|
4141 |
} |
|
4142 |
||
4143 |
// Allocate object and call constructor |
|
4144 |
Handle receiver = klass->allocate_instance_handle(CHECK_NULL); |
|
4145 |
JavaCalls::call_default_constructor(thread, constructor, receiver, CHECK_NULL); |
|
4146 |
||
4147 |
jobject res = JNIHandles::make_local(env, receiver()); |
|
4148 |
if (JvmtiExport::should_post_vm_object_alloc()) { |
|
4149 |
JvmtiExport::post_vm_object_alloc(JavaThread::current(), receiver()); |
|
4150 |
} |
|
4151 |
return res; |
|
4152 |
JVM_END |
|
4153 |
||
4154 |
||
4155 |
// Field //////////////////////////////////////////////////////////////////////////////////////////// |
|
4156 |
||
4157 |
JVM_ENTRY(jobject, JVM_GetField(JNIEnv *env, jobject field, jobject obj)) |
|
4158 |
JVMWrapper("JVM_GetField"); |
|
4159 |
JvmtiVMObjectAllocEventCollector oam; |
|
4160 |
Handle field_mirror(thread, JNIHandles::resolve(field)); |
|
4161 |
Handle receiver (thread, JNIHandles::resolve(obj)); |
|
4162 |
fieldDescriptor fd; |
|
4163 |
Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_NULL); |
|
4164 |
jvalue value; |
|
4165 |
BasicType type = Reflection::field_get(&value, &fd, receiver); |
|
4166 |
oop box = Reflection::box(&value, type, CHECK_NULL); |
|
4167 |
return JNIHandles::make_local(env, box); |
|
4168 |
JVM_END |
|
4169 |
||
4170 |
||
4171 |
JVM_ENTRY(jvalue, JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, unsigned char wCode)) |
|
4172 |
JVMWrapper("JVM_GetPrimitiveField"); |
|
4173 |
Handle field_mirror(thread, JNIHandles::resolve(field)); |
|
4174 |
Handle receiver (thread, JNIHandles::resolve(obj)); |
|
4175 |
fieldDescriptor fd; |
|
4176 |
jvalue value; |
|
4177 |
value.j = 0; |
|
4178 |
Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_(value)); |
|
4179 |
BasicType type = Reflection::field_get(&value, &fd, receiver); |
|
4180 |
BasicType wide_type = (BasicType) wCode; |
|
4181 |
if (type != wide_type) { |
|
4182 |
Reflection::widen(&value, type, wide_type, CHECK_(value)); |
|
4183 |
} |
|
4184 |
return value; |
|
4185 |
JVM_END // should really be JVM_END, but that doesn't work for union types! |
|
4186 |
||
4187 |
||
4188 |
JVM_ENTRY(void, JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val)) |
|
4189 |
JVMWrapper("JVM_SetField"); |
|
4190 |
Handle field_mirror(thread, JNIHandles::resolve(field)); |
|
4191 |
Handle receiver (thread, JNIHandles::resolve(obj)); |
|
4192 |
oop box = JNIHandles::resolve(val); |
|
4193 |
fieldDescriptor fd; |
|
4194 |
Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); |
|
4195 |
BasicType field_type = fd.field_type(); |
|
4196 |
jvalue value; |
|
4197 |
BasicType value_type; |
|
4198 |
if (field_type == T_OBJECT || field_type == T_ARRAY) { |
|
4199 |
// Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array |
|
4200 |
value_type = Reflection::unbox_for_regular_object(box, &value); |
|
4201 |
Reflection::field_set(&value, &fd, receiver, field_type, CHECK); |
|
4202 |
} else { |
|
4203 |
value_type = Reflection::unbox_for_primitive(box, &value, CHECK); |
|
4204 |
Reflection::field_set(&value, &fd, receiver, value_type, CHECK); |
|
4205 |
} |
|
4206 |
JVM_END |
|
4207 |
||
4208 |
||
4209 |
JVM_ENTRY(void, JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, unsigned char vCode)) |
|
4210 |
JVMWrapper("JVM_SetPrimitiveField"); |
|
4211 |
Handle field_mirror(thread, JNIHandles::resolve(field)); |
|
4212 |
Handle receiver (thread, JNIHandles::resolve(obj)); |
|
4213 |
fieldDescriptor fd; |
|
4214 |
Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); |
|
4215 |
BasicType value_type = (BasicType) vCode; |
|
4216 |
Reflection::field_set(&v, &fd, receiver, value_type, CHECK); |
|
4217 |
JVM_END |
|
4218 |
||
4219 |
||
4220 |
// Method /////////////////////////////////////////////////////////////////////////////////////////// |
|
4221 |
||
4222 |
JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) |
|
4223 |
JVMWrapper("JVM_InvokeMethod"); |
|
4224 |
Handle method_handle; |
|
4225 |
if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { |
|
4226 |
method_handle = Handle(THREAD, JNIHandles::resolve(method)); |
|
4227 |
Handle receiver(THREAD, JNIHandles::resolve(obj)); |
|
4228 |
objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); |
|
4229 |
oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); |
|
4230 |
jobject res = JNIHandles::make_local(env, result); |
|
4231 |
if (JvmtiExport::should_post_vm_object_alloc()) { |
|
4232 |
oop ret_type = java_lang_reflect_Method::return_type(method_handle()); |
|
4233 |
assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); |
|
4234 |
if (java_lang_Class::is_primitive(ret_type)) { |
|
4235 |
// Only for primitive type vm allocates memory for java object. |
|
4236 |
// See box() method. |
|
4237 |
JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); |
|
4238 |
} |
|
4239 |
} |
|
4240 |
return res; |
|
4241 |
} else { |
|
4242 |
THROW_0(vmSymbols::java_lang_StackOverflowError()); |
|
4243 |
} |
|
4244 |
JVM_END |
|
4245 |
||
4246 |
||
4247 |
JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) |
|
4248 |
JVMWrapper("JVM_NewInstanceFromConstructor"); |
|
4249 |
oop constructor_mirror = JNIHandles::resolve(c); |
|
4250 |
objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); |
|
4251 |
oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); |
|
4252 |
jobject res = JNIHandles::make_local(env, result); |
|
4253 |
if (JvmtiExport::should_post_vm_object_alloc()) { |
|
4254 |
JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); |
|
4255 |
} |
|
4256 |
return res; |
|
4257 |
JVM_END |
|
4258 |
||
4259 |
#endif /* SUPPORT_OLD_REFLECTION */ |
|
4260 |
||
4261 |
// Atomic /////////////////////////////////////////////////////////////////////////////////////////// |
|
4262 |
||
4263 |
JVM_LEAF(jboolean, JVM_SupportsCX8()) |
|
4264 |
JVMWrapper("JVM_SupportsCX8"); |
|
4265 |
return VM_Version::supports_cx8(); |
|
4266 |
JVM_END |
|
4267 |
||
4268 |
||
4269 |
JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) |
|
4270 |
JVMWrapper("JVM_CX8Field"); |
|
4271 |
jlong res; |
|
4272 |
oop o = JNIHandles::resolve(obj); |
|
4273 |
intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); |
|
4274 |
volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); |
|
4275 |
||
4276 |
assert(VM_Version::supports_cx8(), "cx8 not supported"); |
|
4277 |
res = Atomic::cmpxchg(newVal, addr, oldVal); |
|
4278 |
||
4279 |
return res == oldVal; |
|
4280 |
JVM_END |
|
4281 |
||
363
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4282 |
// DTrace /////////////////////////////////////////////////////////////////// |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4283 |
|
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4284 |
JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4285 |
JVMWrapper("JVM_DTraceGetVersion"); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4286 |
return (jint)JVM_TRACING_DTRACE_VERSION; |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4287 |
JVM_END |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4288 |
|
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4289 |
JVM_ENTRY(jlong,JVM_DTraceActivate( |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4290 |
JNIEnv* env, jint version, jstring module_name, jint providers_count, |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4291 |
JVM_DTraceProvider* providers)) |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4292 |
JVMWrapper("JVM_DTraceActivate"); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4293 |
return DTraceJSDT::activate( |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4294 |
version, module_name, providers_count, providers, CHECK_0); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4295 |
JVM_END |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4296 |
|
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4297 |
JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4298 |
JVMWrapper("JVM_DTraceIsProbeEnabled"); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4299 |
return DTraceJSDT::is_probe_enabled(method); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4300 |
JVM_END |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4301 |
|
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4302 |
JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4303 |
JVMWrapper("JVM_DTraceDispose"); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4304 |
DTraceJSDT::dispose(handle); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4305 |
JVM_END |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4306 |
|
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4307 |
JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4308 |
JVMWrapper("JVM_DTraceIsSupported"); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4309 |
return DTraceJSDT::is_supported(); |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4310 |
JVM_END |
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4311 |
|
1 | 4312 |
// Returns an array of all live Thread objects (VM internal JavaThreads, |
4313 |
// jvmti agent threads, and JNI attaching threads are skipped) |
|
4314 |
// See CR 6404306 regarding JNI attaching threads |
|
4315 |
JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) |
|
4316 |
ResourceMark rm(THREAD); |
|
4317 |
ThreadsListEnumerator tle(THREAD, false, false); |
|
4318 |
JvmtiVMObjectAllocEventCollector oam; |
|
4319 |
||
4320 |
int num_threads = tle.num_threads(); |
|
4321 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::thread_klass(), num_threads, CHECK_NULL); |
|
4322 |
objArrayHandle threads_ah(THREAD, r); |
|
4323 |
||
4324 |
for (int i = 0; i < num_threads; i++) { |
|
4325 |
Handle h = tle.get_threadObj(i); |
|
4326 |
threads_ah->obj_at_put(i, h()); |
|
4327 |
} |
|
4328 |
||
4329 |
return (jobjectArray) JNIHandles::make_local(env, threads_ah()); |
|
4330 |
JVM_END |
|
4331 |
||
4332 |
||
4333 |
// Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods |
|
4334 |
// Return StackTraceElement[][], each element is the stack trace of a thread in |
|
4335 |
// the corresponding entry in the given threads array |
|
4336 |
JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) |
|
4337 |
JVMWrapper("JVM_DumpThreads"); |
|
4338 |
JvmtiVMObjectAllocEventCollector oam; |
|
4339 |
||
4340 |
// Check if threads is null |
|
4341 |
if (threads == NULL) { |
|
4342 |
THROW_(vmSymbols::java_lang_NullPointerException(), 0); |
|
4343 |
} |
|
4344 |
||
4345 |
objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); |
|
4346 |
objArrayHandle ah(THREAD, a); |
|
4347 |
int num_threads = ah->length(); |
|
4348 |
// check if threads is non-empty array |
|
4349 |
if (num_threads == 0) { |
|
4350 |
THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
|
4351 |
} |
|
4352 |
||
4353 |
// check if threads is not an array of objects of Thread class |
|
4354 |
klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); |
|
4355 |
if (k != SystemDictionary::thread_klass()) { |
|
4356 |
THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
|
4357 |
} |
|
4358 |
||
4359 |
ResourceMark rm(THREAD); |
|
4360 |
||
4361 |
GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); |
|
4362 |
for (int i = 0; i < num_threads; i++) { |
|
4363 |
oop thread_obj = ah->obj_at(i); |
|
4364 |
instanceHandle h(THREAD, (instanceOop) thread_obj); |
|
4365 |
thread_handle_array->append(h); |
|
4366 |
} |
|
4367 |
||
4368 |
Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); |
|
4369 |
return (jobjectArray)JNIHandles::make_local(env, stacktraces()); |
|
4370 |
||
4371 |
JVM_END |
|
4372 |
||
4373 |
// JVM monitoring and management support |
|
4374 |
JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) |
|
4375 |
return Management::get_jmm_interface(version); |
|
4376 |
JVM_END |
|
4377 |
||
4378 |
// com.sun.tools.attach.VirtualMachine agent properties support |
|
4379 |
// |
|
4380 |
// Initialize the agent properties with the properties maintained in the VM |
|
4381 |
JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) |
|
4382 |
JVMWrapper("JVM_InitAgentProperties"); |
|
4383 |
ResourceMark rm; |
|
4384 |
||
4385 |
Handle props(THREAD, JNIHandles::resolve_non_null(properties)); |
|
4386 |
||
4387 |
PUTPROP(props, "sun.java.command", Arguments::java_command()); |
|
4388 |
PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); |
|
4389 |
PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); |
|
4390 |
return properties; |
|
4391 |
JVM_END |
|
4392 |
||
4393 |
JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) |
|
4394 |
{ |
|
4395 |
JVMWrapper("JVM_GetEnclosingMethodInfo"); |
|
4396 |
JvmtiVMObjectAllocEventCollector oam; |
|
4397 |
||
4398 |
if (ofClass == NULL) { |
|
4399 |
return NULL; |
|
4400 |
} |
|
4401 |
Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); |
|
4402 |
// Special handling for primitive objects |
|
4403 |
if (java_lang_Class::is_primitive(mirror())) { |
|
4404 |
return NULL; |
|
4405 |
} |
|
4406 |
klassOop k = java_lang_Class::as_klassOop(mirror()); |
|
4407 |
if (!Klass::cast(k)->oop_is_instance()) { |
|
4408 |
return NULL; |
|
4409 |
} |
|
4410 |
instanceKlassHandle ik_h(THREAD, k); |
|
4411 |
int encl_method_class_idx = ik_h->enclosing_method_class_index(); |
|
4412 |
if (encl_method_class_idx == 0) { |
|
4413 |
return NULL; |
|
4414 |
} |
|
4415 |
objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::object_klass(), 3, CHECK_NULL); |
|
4416 |
objArrayHandle dest(THREAD, dest_o); |
|
4417 |
klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
|
4418 |
dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); |
|
4419 |
int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
|
4420 |
if (encl_method_method_idx != 0) { |
|
4421 |
symbolOop sym_o = ik_h->constants()->symbol_at( |
|
4422 |
extract_low_short_from_int( |
|
4423 |
ik_h->constants()->name_and_type_at(encl_method_method_idx))); |
|
4424 |
symbolHandle sym(THREAD, sym_o); |
|
4425 |
Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
|
4426 |
dest->obj_at_put(1, str()); |
|
4427 |
sym_o = ik_h->constants()->symbol_at( |
|
4428 |
extract_high_short_from_int( |
|
4429 |
ik_h->constants()->name_and_type_at(encl_method_method_idx))); |
|
4430 |
sym = symbolHandle(THREAD, sym_o); |
|
4431 |
str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
|
4432 |
dest->obj_at_put(2, str()); |
|
4433 |
} |
|
4434 |
return (jobjectArray) JNIHandles::make_local(dest()); |
|
4435 |
} |
|
4436 |
JVM_END |
|
4437 |
||
4438 |
JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, |
|
4439 |
jint javaThreadState)) |
|
4440 |
{ |
|
4441 |
// If new thread states are added in future JDK and VM versions, |
|
4442 |
// this should check if the JDK version is compatible with thread |
|
4443 |
// states supported by the VM. Return NULL if not compatible. |
|
4444 |
// |
|
4445 |
// This function must map the VM java_lang_Thread::ThreadStatus |
|
4446 |
// to the Java thread state that the JDK supports. |
|
4447 |
// |
|
4448 |
||
4449 |
typeArrayHandle values_h; |
|
4450 |
switch (javaThreadState) { |
|
4451 |
case JAVA_THREAD_STATE_NEW : { |
|
4452 |
typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); |
|
4453 |
values_h = typeArrayHandle(THREAD, r); |
|
4454 |
values_h->int_at_put(0, java_lang_Thread::NEW); |
|
4455 |
break; |
|
4456 |
} |
|
4457 |
case JAVA_THREAD_STATE_RUNNABLE : { |
|
4458 |
typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); |
|
4459 |
values_h = typeArrayHandle(THREAD, r); |
|
4460 |
values_h->int_at_put(0, java_lang_Thread::RUNNABLE); |
|
4461 |
break; |
|
4462 |
} |
|
4463 |
case JAVA_THREAD_STATE_BLOCKED : { |
|
4464 |
typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); |
|
4465 |
values_h = typeArrayHandle(THREAD, r); |
|
4466 |
values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); |
|
4467 |
break; |
|
4468 |
} |
|
4469 |
case JAVA_THREAD_STATE_WAITING : { |
|
4470 |
typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); |
|
4471 |
values_h = typeArrayHandle(THREAD, r); |
|
4472 |
values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); |
|
4473 |
values_h->int_at_put(1, java_lang_Thread::PARKED); |
|
4474 |
break; |
|
4475 |
} |
|
4476 |
case JAVA_THREAD_STATE_TIMED_WAITING : { |
|
4477 |
typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); |
|
4478 |
values_h = typeArrayHandle(THREAD, r); |
|
4479 |
values_h->int_at_put(0, java_lang_Thread::SLEEPING); |
|
4480 |
values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); |
|
4481 |
values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); |
|
4482 |
break; |
|
4483 |
} |
|
4484 |
case JAVA_THREAD_STATE_TERMINATED : { |
|
4485 |
typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); |
|
4486 |
values_h = typeArrayHandle(THREAD, r); |
|
4487 |
values_h->int_at_put(0, java_lang_Thread::TERMINATED); |
|
4488 |
break; |
|
4489 |
} |
|
4490 |
default: |
|
4491 |
// Unknown state - probably incompatible JDK version |
|
4492 |
return NULL; |
|
4493 |
} |
|
4494 |
||
4495 |
return (jintArray) JNIHandles::make_local(env, values_h()); |
|
4496 |
} |
|
4497 |
JVM_END |
|
4498 |
||
4499 |
||
4500 |
JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, |
|
4501 |
jint javaThreadState, |
|
4502 |
jintArray values)) |
|
4503 |
{ |
|
4504 |
// If new thread states are added in future JDK and VM versions, |
|
4505 |
// this should check if the JDK version is compatible with thread |
|
4506 |
// states supported by the VM. Return NULL if not compatible. |
|
4507 |
// |
|
4508 |
// This function must map the VM java_lang_Thread::ThreadStatus |
|
4509 |
// to the Java thread state that the JDK supports. |
|
4510 |
// |
|
4511 |
||
4512 |
ResourceMark rm; |
|
4513 |
||
4514 |
// Check if threads is null |
|
4515 |
if (values == NULL) { |
|
4516 |
THROW_(vmSymbols::java_lang_NullPointerException(), 0); |
|
4517 |
} |
|
4518 |
||
4519 |
typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); |
|
4520 |
typeArrayHandle values_h(THREAD, v); |
|
4521 |
||
4522 |
objArrayHandle names_h; |
|
4523 |
switch (javaThreadState) { |
|
4524 |
case JAVA_THREAD_STATE_NEW : { |
|
4525 |
assert(values_h->length() == 1 && |
|
4526 |
values_h->int_at(0) == java_lang_Thread::NEW, |
|
4527 |
"Invalid threadStatus value"); |
|
4528 |
||
4529 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), |
|
4530 |
1, /* only 1 substate */ |
|
4531 |
CHECK_NULL); |
|
4532 |
names_h = objArrayHandle(THREAD, r); |
|
4533 |
Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); |
|
4534 |
names_h->obj_at_put(0, name()); |
|
4535 |
break; |
|
4536 |
} |
|
4537 |
case JAVA_THREAD_STATE_RUNNABLE : { |
|
4538 |
assert(values_h->length() == 1 && |
|
4539 |
values_h->int_at(0) == java_lang_Thread::RUNNABLE, |
|
4540 |
"Invalid threadStatus value"); |
|
4541 |
||
4542 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), |
|
4543 |
1, /* only 1 substate */ |
|
4544 |
CHECK_NULL); |
|
4545 |
names_h = objArrayHandle(THREAD, r); |
|
4546 |
Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); |
|
4547 |
names_h->obj_at_put(0, name()); |
|
4548 |
break; |
|
4549 |
} |
|
4550 |
case JAVA_THREAD_STATE_BLOCKED : { |
|
4551 |
assert(values_h->length() == 1 && |
|
4552 |
values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, |
|
4553 |
"Invalid threadStatus value"); |
|
4554 |
||
4555 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), |
|
4556 |
1, /* only 1 substate */ |
|
4557 |
CHECK_NULL); |
|
4558 |
names_h = objArrayHandle(THREAD, r); |
|
4559 |
Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); |
|
4560 |
names_h->obj_at_put(0, name()); |
|
4561 |
break; |
|
4562 |
} |
|
4563 |
case JAVA_THREAD_STATE_WAITING : { |
|
4564 |
assert(values_h->length() == 2 && |
|
4565 |
values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && |
|
4566 |
values_h->int_at(1) == java_lang_Thread::PARKED, |
|
4567 |
"Invalid threadStatus value"); |
|
4568 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), |
|
4569 |
2, /* number of substates */ |
|
4570 |
CHECK_NULL); |
|
4571 |
names_h = objArrayHandle(THREAD, r); |
|
4572 |
Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", |
|
4573 |
CHECK_NULL); |
|
4574 |
Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", |
|
4575 |
CHECK_NULL); |
|
4576 |
names_h->obj_at_put(0, name0()); |
|
4577 |
names_h->obj_at_put(1, name1()); |
|
4578 |
break; |
|
4579 |
} |
|
4580 |
case JAVA_THREAD_STATE_TIMED_WAITING : { |
|
4581 |
assert(values_h->length() == 3 && |
|
4582 |
values_h->int_at(0) == java_lang_Thread::SLEEPING && |
|
4583 |
values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && |
|
4584 |
values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, |
|
4585 |
"Invalid threadStatus value"); |
|
4586 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), |
|
4587 |
3, /* number of substates */ |
|
4588 |
CHECK_NULL); |
|
4589 |
names_h = objArrayHandle(THREAD, r); |
|
4590 |
Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", |
|
4591 |
CHECK_NULL); |
|
4592 |
Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", |
|
4593 |
CHECK_NULL); |
|
4594 |
Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", |
|
4595 |
CHECK_NULL); |
|
4596 |
names_h->obj_at_put(0, name0()); |
|
4597 |
names_h->obj_at_put(1, name1()); |
|
4598 |
names_h->obj_at_put(2, name2()); |
|
4599 |
break; |
|
4600 |
} |
|
4601 |
case JAVA_THREAD_STATE_TERMINATED : { |
|
4602 |
assert(values_h->length() == 1 && |
|
4603 |
values_h->int_at(0) == java_lang_Thread::TERMINATED, |
|
4604 |
"Invalid threadStatus value"); |
|
4605 |
objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), |
|
4606 |
1, /* only 1 substate */ |
|
4607 |
CHECK_NULL); |
|
4608 |
names_h = objArrayHandle(THREAD, r); |
|
4609 |
Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); |
|
4610 |
names_h->obj_at_put(0, name()); |
|
4611 |
break; |
|
4612 |
} |
|
4613 |
default: |
|
4614 |
// Unknown state - probably incompatible JDK version |
|
4615 |
return NULL; |
|
4616 |
} |
|
4617 |
return (jobjectArray) JNIHandles::make_local(env, names_h()); |
|
4618 |
} |
|
4619 |
JVM_END |
|
4620 |
||
4621 |
JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) |
|
4622 |
{ |
|
4623 |
memset(info, 0, sizeof(info_size)); |
|
4624 |
||
4625 |
info->jvm_version = Abstract_VM_Version::jvm_version(); |
|
4626 |
info->update_version = 0; /* 0 in HotSpot Express VM */ |
|
4627 |
info->special_update_version = 0; /* 0 in HotSpot Express VM */ |
|
4628 |
||
4629 |
// when we add a new capability in the jvm_version_info struct, we should also |
|
4630 |
// consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat |
|
4631 |
// counter defined in runtimeService.cpp. |
|
4632 |
info->is_attachable = AttachListener::is_attach_supported(); |
|
4633 |
#ifdef KERNEL |
|
4634 |
info->is_kernel_jvm = 1; // true; |
|
4635 |
#else // KERNEL |
|
4636 |
info->is_kernel_jvm = 0; // false; |
|
4637 |
#endif // KERNEL |
|
4638 |
} |
|
4639 |
JVM_END |
|
363
99d43e8a76ad
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
1
diff
changeset
|
4640 |