--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/prims/jvm.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,3823 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/classFileStream.hpp"
+#include "classfile/classLoader.hpp"
+#include "classfile/classLoaderData.inline.hpp"
+#include "classfile/javaAssertions.hpp"
+#include "classfile/javaClasses.inline.hpp"
+#include "classfile/moduleEntry.hpp"
+#include "classfile/modules.hpp"
+#include "classfile/packageEntry.hpp"
+#include "classfile/stringTable.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "gc/shared/barrierSet.inline.hpp"
+#include "gc/shared/collectedHeap.inline.hpp"
+#include "interpreter/bytecode.hpp"
+#include "memory/oopFactory.hpp"
+#include "memory/resourceArea.hpp"
+#include "memory/universe.inline.hpp"
+#include "oops/fieldStreams.hpp"
+#include "oops/instanceKlass.hpp"
+#include "oops/method.hpp"
+#include "oops/objArrayKlass.hpp"
+#include "oops/objArrayOop.inline.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvm.h"
+#include "prims/jvm_misc.hpp"
+#include "prims/jvmtiExport.hpp"
+#include "prims/jvmtiThreadState.hpp"
+#include "prims/nativeLookup.hpp"
+#include "prims/privilegedStack.hpp"
+#include "prims/stackwalk.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/atomic.hpp"
+#include "runtime/handles.inline.hpp"
+#include "runtime/init.hpp"
+#include "runtime/interfaceSupport.hpp"
+#include "runtime/java.hpp"
+#include "runtime/javaCalls.hpp"
+#include "runtime/jfieldIDWorkaround.hpp"
+#include "runtime/orderAccess.inline.hpp"
+#include "runtime/os.inline.hpp"
+#include "runtime/perfData.hpp"
+#include "runtime/reflection.hpp"
+#include "runtime/thread.inline.hpp"
+#include "runtime/vframe.hpp"
+#include "runtime/vm_operations.hpp"
+#include "runtime/vm_version.hpp"
+#include "services/attachListener.hpp"
+#include "services/management.hpp"
+#include "services/threadService.hpp"
+#include "trace/tracing.hpp"
+#include "utilities/copy.hpp"
+#include "utilities/defaultStream.hpp"
+#include "utilities/dtrace.hpp"
+#include "utilities/events.hpp"
+#include "utilities/histogram.hpp"
+#include "utilities/macros.hpp"
+#include "utilities/utf8.hpp"
+#if INCLUDE_CDS
+#include "classfile/sharedClassUtil.hpp"
+#include "classfile/systemDictionaryShared.hpp"
+#endif
+
+#include <errno.h>
+
+/*
+ NOTE about use of any ctor or function call that can trigger a safepoint/GC:
+ such ctors and calls MUST NOT come between an oop declaration/init and its
+ usage because if objects are move this may cause various memory stomps, bus
+ errors and segfaults. Here is a cookbook for causing so called "naked oop
+ failures":
+
+ JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> {
+ JVMWrapper("JVM_GetClassDeclaredFields");
+
+ // Object address to be held directly in mirror & not visible to GC
+ oop mirror = JNIHandles::resolve_non_null(ofClass);
+
+ // If this ctor can hit a safepoint, moving objects around, then
+ ComplexConstructor foo;
+
+ // Boom! mirror may point to JUNK instead of the intended object
+ (some dereference of mirror)
+
+ // Here's another call that may block for GC, making mirror stale
+ MutexLocker ml(some_lock);
+
+ // And here's an initializer that can result in a stale oop
+ // all in one step.
+ oop o = call_that_can_throw_exception(TRAPS);
+
+
+ The solution is to keep the oop declaration BELOW the ctor or function
+ call that might cause a GC, do another resolve to reassign the oop, or
+ consider use of a Handle instead of an oop so there is immunity from object
+ motion. But note that the "QUICK" entries below do not have a handlemark
+ and thus can only support use of handles passed in.
+*/
+
+static void trace_class_resolution_impl(Klass* to_class, TRAPS) {
+ ResourceMark rm;
+ int line_number = -1;
+ const char * source_file = NULL;
+ const char * trace = "explicit";
+ InstanceKlass* caller = NULL;
+ JavaThread* jthread = JavaThread::current();
+ if (jthread->has_last_Java_frame()) {
+ vframeStream vfst(jthread);
+
+ // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames
+ TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK);
+ Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK);
+ TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK);
+ Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK);
+
+ Method* last_caller = NULL;
+
+ while (!vfst.at_end()) {
+ Method* m = vfst.method();
+ if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&&
+ !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) &&
+ !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) {
+ break;
+ }
+ last_caller = m;
+ vfst.next();
+ }
+ // if this is called from Class.forName0 and that is called from Class.forName,
+ // then print the caller of Class.forName. If this is Class.loadClass, then print
+ // that caller, otherwise keep quiet since this should be picked up elsewhere.
+ bool found_it = false;
+ if (!vfst.at_end() &&
+ vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() &&
+ vfst.method()->name() == vmSymbols::forName0_name()) {
+ vfst.next();
+ if (!vfst.at_end() &&
+ vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() &&
+ vfst.method()->name() == vmSymbols::forName_name()) {
+ vfst.next();
+ found_it = true;
+ }
+ } else if (last_caller != NULL &&
+ last_caller->method_holder()->name() ==
+ vmSymbols::java_lang_ClassLoader() &&
+ (last_caller->name() == vmSymbols::loadClassInternal_name() ||
+ last_caller->name() == vmSymbols::loadClass_name())) {
+ found_it = true;
+ } else if (!vfst.at_end()) {
+ if (vfst.method()->is_native()) {
+ // JNI call
+ found_it = true;
+ }
+ }
+ if (found_it && !vfst.at_end()) {
+ // found the caller
+ caller = vfst.method()->method_holder();
+ line_number = vfst.method()->line_number_from_bci(vfst.bci());
+ if (line_number == -1) {
+ // show method name if it's a native method
+ trace = vfst.method()->name_and_sig_as_C_string();
+ }
+ Symbol* s = caller->source_file_name();
+ if (s != NULL) {
+ source_file = s->as_C_string();
+ }
+ }
+ }
+ if (caller != NULL) {
+ if (to_class != caller) {
+ const char * from = caller->external_name();
+ const char * to = to_class->external_name();
+ // print in a single call to reduce interleaving between threads
+ if (source_file != NULL) {
+ log_debug(class, resolve)("%s %s %s:%d (%s)", from, to, source_file, line_number, trace);
+ } else {
+ log_debug(class, resolve)("%s %s (%s)", from, to, trace);
+ }
+ }
+ }
+}
+
+void trace_class_resolution(Klass* to_class) {
+ EXCEPTION_MARK;
+ trace_class_resolution_impl(to_class, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ CLEAR_PENDING_EXCEPTION;
+ }
+}
+
+// Wrapper to trace JVM functions
+
+#ifdef ASSERT
+ Histogram* JVMHistogram;
+ volatile jint JVMHistogram_lock = 0;
+
+ class JVMHistogramElement : public HistogramElement {
+ public:
+ JVMHistogramElement(const char* name);
+ };
+
+ JVMHistogramElement::JVMHistogramElement(const char* elementName) {
+ _name = elementName;
+ uintx count = 0;
+
+ while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) {
+ while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) {
+ count +=1;
+ if ( (WarnOnStalledSpinLock > 0)
+ && (count % WarnOnStalledSpinLock == 0)) {
+ warning("JVMHistogram_lock seems to be stalled");
+ }
+ }
+ }
+
+ if(JVMHistogram == NULL)
+ JVMHistogram = new Histogram("JVM Call Counts",100);
+
+ JVMHistogram->add_element(this);
+ Atomic::dec(&JVMHistogram_lock);
+ }
+
+ #define JVMCountWrapper(arg) \
+ static JVMHistogramElement* e = new JVMHistogramElement(arg); \
+ if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen!
+
+ #define JVMWrapper(arg) JVMCountWrapper(arg);
+#else
+ #define JVMWrapper(arg)
+#endif
+
+
+// Interface version /////////////////////////////////////////////////////////////////////
+
+
+JVM_LEAF(jint, JVM_GetInterfaceVersion())
+ return JVM_INTERFACE_VERSION;
+JVM_END
+
+
+// java.lang.System //////////////////////////////////////////////////////////////////////
+
+
+JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored))
+ JVMWrapper("JVM_CurrentTimeMillis");
+ return os::javaTimeMillis();
+JVM_END
+
+JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored))
+ JVMWrapper("JVM_NanoTime");
+ return os::javaTimeNanos();
+JVM_END
+
+// The function below is actually exposed by jdk.internal.misc.VM and not
+// java.lang.System, but we choose to keep it here so that it stays next
+// to JVM_CurrentTimeMillis and JVM_NanoTime
+
+const jlong MAX_DIFF_SECS = CONST64(0x0100000000); // 2^32
+const jlong MIN_DIFF_SECS = -MAX_DIFF_SECS; // -2^32
+
+JVM_LEAF(jlong, JVM_GetNanoTimeAdjustment(JNIEnv *env, jclass ignored, jlong offset_secs))
+ JVMWrapper("JVM_GetNanoTimeAdjustment");
+ jlong seconds;
+ jlong nanos;
+
+ os::javaTimeSystemUTC(seconds, nanos);
+
+ // We're going to verify that the result can fit in a long.
+ // For that we need the difference in seconds between 'seconds'
+ // and 'offset_secs' to be such that:
+ // |seconds - offset_secs| < (2^63/10^9)
+ // We're going to approximate 10^9 ~< 2^30 (1000^3 ~< 1024^3)
+ // which makes |seconds - offset_secs| < 2^33
+ // and we will prefer +/- 2^32 as the maximum acceptable diff
+ // as 2^32 has a more natural feel than 2^33...
+ //
+ // So if |seconds - offset_secs| >= 2^32 - we return a special
+ // sentinel value (-1) which the caller should take as an
+ // exception value indicating that the offset given to us is
+ // too far from range of the current time - leading to too big
+ // a nano adjustment. The caller is expected to recover by
+ // computing a more accurate offset and calling this method
+ // again. (For the record 2^32 secs is ~136 years, so that
+ // should rarely happen)
+ //
+ jlong diff = seconds - offset_secs;
+ if (diff >= MAX_DIFF_SECS || diff <= MIN_DIFF_SECS) {
+ return -1; // sentinel value: the offset is too far off the target
+ }
+
+ // return the adjustment. If you compute a time by adding
+ // this number of nanoseconds along with the number of seconds
+ // in the offset you should get the current UTC time.
+ return (diff * (jlong)1000000000) + nanos;
+JVM_END
+
+JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos,
+ jobject dst, jint dst_pos, jint length))
+ JVMWrapper("JVM_ArrayCopy");
+ // Check if we have null pointers
+ if (src == NULL || dst == NULL) {
+ THROW(vmSymbols::java_lang_NullPointerException());
+ }
+ arrayOop s = arrayOop(JNIHandles::resolve_non_null(src));
+ arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst));
+ assert(oopDesc::is_oop(s), "JVM_ArrayCopy: src not an oop");
+ assert(oopDesc::is_oop(d), "JVM_ArrayCopy: dst not an oop");
+ // Do copy
+ s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread);
+JVM_END
+
+
+static void set_property(Handle props, const char* key, const char* value, TRAPS) {
+ JavaValue r(T_OBJECT);
+ // public synchronized Object put(Object key, Object value);
+ HandleMark hm(THREAD);
+ Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK);
+ Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK);
+ JavaCalls::call_virtual(&r,
+ props,
+ SystemDictionary::Properties_klass(),
+ vmSymbols::put_name(),
+ vmSymbols::object_object_object_signature(),
+ key_str,
+ value_str,
+ THREAD);
+}
+
+
+#define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties));
+
+
+JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties))
+ JVMWrapper("JVM_InitProperties");
+ ResourceMark rm;
+
+ Handle props(THREAD, JNIHandles::resolve_non_null(properties));
+
+ // System property list includes both user set via -D option and
+ // jvm system specific properties.
+ for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
+ PUTPROP(props, p->key(), p->value());
+ }
+
+ // Convert the -XX:MaxDirectMemorySize= command line flag
+ // to the sun.nio.MaxDirectMemorySize property.
+ // Do this after setting user properties to prevent people
+ // from setting the value with a -D option, as requested.
+ {
+ if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) {
+ PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1");
+ } else {
+ char as_chars[256];
+ jio_snprintf(as_chars, sizeof(as_chars), JULONG_FORMAT, MaxDirectMemorySize);
+ PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars);
+ }
+ }
+
+ // JVM monitoring and management support
+ // Add the sun.management.compiler property for the compiler's name
+ {
+#undef CSIZE
+#if defined(_LP64) || defined(_WIN64)
+ #define CSIZE "64-Bit "
+#else
+ #define CSIZE
+#endif // 64bit
+
+#ifdef TIERED
+ const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers";
+#else
+#if defined(COMPILER1)
+ const char* compiler_name = "HotSpot " CSIZE "Client Compiler";
+#elif defined(COMPILER2)
+ const char* compiler_name = "HotSpot " CSIZE "Server Compiler";
+#elif INCLUDE_JVMCI
+ #error "INCLUDE_JVMCI should imply TIERED"
+#else
+ const char* compiler_name = "";
+#endif // compilers
+#endif // TIERED
+
+ if (*compiler_name != '\0' &&
+ (Arguments::mode() != Arguments::_int)) {
+ PUTPROP(props, "sun.management.compiler", compiler_name);
+ }
+ }
+
+ return properties;
+JVM_END
+
+
+/*
+ * Return the temporary directory that the VM uses for the attach
+ * and perf data files.
+ *
+ * It is important that this directory is well-known and the
+ * same for all VM instances. It cannot be affected by configuration
+ * variables such as java.io.tmpdir.
+ */
+JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env))
+ JVMWrapper("JVM_GetTemporaryDirectory");
+ HandleMark hm(THREAD);
+ const char* temp_dir = os::get_temp_directory();
+ Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL);
+ return (jstring) JNIHandles::make_local(env, h());
+JVM_END
+
+
+// java.lang.Runtime /////////////////////////////////////////////////////////////////////////
+
+extern volatile jint vm_created;
+
+JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code))
+ before_exit(thread);
+ vm_exit(code);
+JVM_END
+
+
+JVM_ENTRY_NO_ENV(void, JVM_GC(void))
+ JVMWrapper("JVM_GC");
+ if (!DisableExplicitGC) {
+ Universe::heap()->collect(GCCause::_java_lang_system_gc);
+ }
+JVM_END
+
+
+JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void))
+ JVMWrapper("JVM_MaxObjectInspectionAge");
+ return Universe::heap()->millis_since_last_gc();
+JVM_END
+
+
+static inline jlong convert_size_t_to_jlong(size_t val) {
+ // In the 64-bit vm, a size_t can overflow a jlong (which is signed).
+ NOT_LP64 (return (jlong)val;)
+ LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);)
+}
+
+JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void))
+ JVMWrapper("JVM_TotalMemory");
+ size_t n = Universe::heap()->capacity();
+ return convert_size_t_to_jlong(n);
+JVM_END
+
+
+JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void))
+ JVMWrapper("JVM_FreeMemory");
+ CollectedHeap* ch = Universe::heap();
+ size_t n;
+ {
+ MutexLocker x(Heap_lock);
+ n = ch->capacity() - ch->used();
+ }
+ return convert_size_t_to_jlong(n);
+JVM_END
+
+
+JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void))
+ JVMWrapper("JVM_MaxMemory");
+ size_t n = Universe::heap()->max_capacity();
+ return convert_size_t_to_jlong(n);
+JVM_END
+
+
+JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void))
+ JVMWrapper("JVM_ActiveProcessorCount");
+ return os::active_processor_count();
+JVM_END
+
+
+
+// java.lang.Throwable //////////////////////////////////////////////////////
+
+
+JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver))
+ JVMWrapper("JVM_FillInStackTrace");
+ Handle exception(thread, JNIHandles::resolve_non_null(receiver));
+ java_lang_Throwable::fill_in_stack_trace(exception);
+JVM_END
+
+
+// java.lang.StackTraceElement //////////////////////////////////////////////
+
+
+JVM_ENTRY(void, JVM_InitStackTraceElementArray(JNIEnv *env, jobjectArray elements, jobject throwable))
+ JVMWrapper("JVM_InitStackTraceElementArray");
+ Handle exception(THREAD, JNIHandles::resolve(throwable));
+ objArrayOop st = objArrayOop(JNIHandles::resolve(elements));
+ objArrayHandle stack_trace(THREAD, st);
+ // Fill in the allocated stack trace
+ java_lang_Throwable::get_stack_trace_elements(exception, stack_trace, CHECK);
+JVM_END
+
+
+JVM_ENTRY(void, JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo))
+ JVMWrapper("JVM_InitStackTraceElement");
+ Handle stack_frame_info(THREAD, JNIHandles::resolve_non_null(stackFrameInfo));
+ Handle stack_trace_element(THREAD, JNIHandles::resolve_non_null(element));
+ java_lang_StackFrameInfo::to_stack_trace_element(stack_frame_info, stack_trace_element, THREAD);
+JVM_END
+
+
+// java.lang.StackWalker //////////////////////////////////////////////////////
+
+
+JVM_ENTRY(jobject, JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,
+ jint skip_frames, jint frame_count, jint start_index,
+ jobjectArray frames))
+ JVMWrapper("JVM_CallStackWalk");
+ JavaThread* jt = (JavaThread*) THREAD;
+ if (!jt->is_Java_thread() || !jt->has_last_Java_frame()) {
+ THROW_MSG_(vmSymbols::java_lang_InternalError(), "doStackWalk: no stack trace", NULL);
+ }
+
+ Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
+
+ // frames array is a Class<?>[] array when only getting caller reference,
+ // and a StackFrameInfo[] array (or derivative) otherwise. It should never
+ // be null.
+ objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));
+ objArrayHandle frames_array_h(THREAD, fa);
+
+ int limit = start_index + frame_count;
+ if (frames_array_h->length() < limit) {
+ THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "not enough space in buffers", NULL);
+ }
+
+ oop result = StackWalk::walk(stackStream_h, mode, skip_frames, frame_count,
+ start_index, frames_array_h, CHECK_NULL);
+ return JNIHandles::make_local(env, result);
+JVM_END
+
+
+JVM_ENTRY(jint, JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,
+ jint frame_count, jint start_index,
+ jobjectArray frames))
+ JVMWrapper("JVM_MoreStackWalk");
+ JavaThread* jt = (JavaThread*) THREAD;
+
+ // frames array is a Class<?>[] array when only getting caller reference,
+ // and a StackFrameInfo[] array (or derivative) otherwise. It should never
+ // be null.
+ objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));
+ objArrayHandle frames_array_h(THREAD, fa);
+
+ int limit = start_index+frame_count;
+ if (frames_array_h->length() < limit) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "not enough space in buffers");
+ }
+
+ Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
+ return StackWalk::fetchNextBatch(stackStream_h, mode, anchor, frame_count,
+ start_index, frames_array_h, THREAD);
+JVM_END
+
+// java.lang.Object ///////////////////////////////////////////////
+
+
+JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle))
+ JVMWrapper("JVM_IHashCode");
+ // as implemented in the classic virtual machine; return 0 if object is NULL
+ return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ;
+JVM_END
+
+
+JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms))
+ JVMWrapper("JVM_MonitorWait");
+ Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
+ JavaThreadInObjectWaitState jtiows(thread, ms != 0);
+ if (JvmtiExport::should_post_monitor_wait()) {
+ JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms);
+
+ // The current thread already owns the monitor and it has not yet
+ // been added to the wait queue so the current thread cannot be
+ // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT
+ // event handler cannot accidentally consume an unpark() meant for
+ // the ParkEvent associated with this ObjectMonitor.
+ }
+ ObjectSynchronizer::wait(obj, ms, CHECK);
+JVM_END
+
+
+JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle))
+ JVMWrapper("JVM_MonitorNotify");
+ Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
+ ObjectSynchronizer::notify(obj, CHECK);
+JVM_END
+
+
+JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle))
+ JVMWrapper("JVM_MonitorNotifyAll");
+ Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
+ ObjectSynchronizer::notifyall(obj, CHECK);
+JVM_END
+
+
+JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle))
+ JVMWrapper("JVM_Clone");
+ Handle obj(THREAD, JNIHandles::resolve_non_null(handle));
+ Klass* klass = obj->klass();
+ JvmtiVMObjectAllocEventCollector oam;
+
+#ifdef ASSERT
+ // Just checking that the cloneable flag is set correct
+ if (obj->is_array()) {
+ guarantee(klass->is_cloneable(), "all arrays are cloneable");
+ } else {
+ guarantee(obj->is_instance(), "should be instanceOop");
+ bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass());
+ guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag");
+ }
+#endif
+
+ // Check if class of obj supports the Cloneable interface.
+ // All arrays are considered to be cloneable (See JLS 20.1.5)
+ if (!klass->is_cloneable()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name());
+ }
+
+ // Make shallow object copy
+ const int size = obj->size();
+ oop new_obj_oop = NULL;
+ if (obj->is_array()) {
+ const int length = ((arrayOop)obj())->length();
+ new_obj_oop = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL);
+ } else {
+ new_obj_oop = CollectedHeap::obj_allocate(klass, size, CHECK_NULL);
+ }
+
+ // 4839641 (4840070): We must do an oop-atomic copy, because if another thread
+ // is modifying a reference field in the clonee, a non-oop-atomic copy might
+ // be suspended in the middle of copying the pointer and end up with parts
+ // of two different pointers in the field. Subsequent dereferences will crash.
+ // 4846409: an oop-copy of objects with long or double fields or arrays of same
+ // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead
+ // of oops. We know objects are aligned on a minimum of an jlong boundary.
+ // The same is true of StubRoutines::object_copy and the various oop_copy
+ // variants, and of the code generated by the inline_native_clone intrinsic.
+ assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned");
+ Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj_oop,
+ align_object_size(size) / HeapWordsPerLong);
+ // Clear the header
+ new_obj_oop->init_mark();
+
+ // Store check (mark entire object and let gc sort it out)
+ BarrierSet* bs = Universe::heap()->barrier_set();
+ assert(bs->has_write_region_opt(), "Barrier set does not have write_region");
+ bs->write_region(MemRegion((HeapWord*)new_obj_oop, size));
+
+ Handle new_obj(THREAD, new_obj_oop);
+ // Caution: this involves a java upcall, so the clone should be
+ // "gc-robust" by this stage.
+ if (klass->has_finalizer()) {
+ assert(obj->is_instance(), "should be instanceOop");
+ new_obj_oop = InstanceKlass::register_finalizer(instanceOop(new_obj()), CHECK_NULL);
+ new_obj = Handle(THREAD, new_obj_oop);
+ }
+
+ return JNIHandles::make_local(env, new_obj());
+JVM_END
+
+// java.io.File ///////////////////////////////////////////////////////////////
+
+JVM_LEAF(char*, JVM_NativePath(char* path))
+ JVMWrapper("JVM_NativePath");
+ return os::native_path(path);
+JVM_END
+
+
+// Misc. class handling ///////////////////////////////////////////////////////////
+
+
+JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth))
+ JVMWrapper("JVM_GetCallerClass");
+
+ // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or
+ // sun.reflect.Reflection.getCallerClass with a depth parameter is provided
+ // temporarily for existing code to use until a replacement API is defined.
+ if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) {
+ Klass* k = thread->security_get_caller_class(depth);
+ return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror());
+ }
+
+ // Getting the class of the caller frame.
+ //
+ // The call stack at this point looks something like this:
+ //
+ // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ]
+ // [1] [ @CallerSensitive API.method ]
+ // [.] [ (skipped intermediate frames) ]
+ // [n] [ caller ]
+ vframeStream vfst(thread);
+ // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass
+ for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) {
+ Method* m = vfst.method();
+ assert(m != NULL, "sanity");
+ switch (n) {
+ case 0:
+ // This must only be called from Reflection.getCallerClass
+ if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) {
+ THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass");
+ }
+ // fall-through
+ case 1:
+ // Frame 0 and 1 must be caller sensitive.
+ if (!m->caller_sensitive()) {
+ THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n));
+ }
+ break;
+ default:
+ if (!m->is_ignored_by_security_stack_walk()) {
+ // We have reached the desired frame; return the holder class.
+ return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror());
+ }
+ break;
+ }
+ }
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf))
+ JVMWrapper("JVM_FindPrimitiveClass");
+ oop mirror = NULL;
+ BasicType t = name2type(utf);
+ if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) {
+ mirror = Universe::java_mirror(t);
+ }
+ if (mirror == NULL) {
+ THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf);
+ } else {
+ return (jclass) JNIHandles::make_local(env, mirror);
+ }
+JVM_END
+
+
+// Returns a class loaded by the bootstrap class loader; or null
+// if not found. ClassNotFoundException is not thrown.
+// FindClassFromBootLoader is exported to the launcher for windows.
+JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env,
+ const char* name))
+ JVMWrapper("JVM_FindClassFromBootLoader");
+
+ // Java libraries should ensure that name is never null...
+ if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
+ // It's impossible to create this class; the name cannot fit
+ // into the constant pool.
+ return NULL;
+ }
+
+ TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL);
+ Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL);
+ if (k == NULL) {
+ return NULL;
+ }
+
+ if (log_is_enabled(Debug, class, resolve)) {
+ trace_class_resolution(k);
+ }
+ return (jclass) JNIHandles::make_local(env, k->java_mirror());
+JVM_END
+
+// Find a class with this name in this loader, using the caller's protection domain.
+JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name,
+ jboolean init, jobject loader,
+ jclass caller))
+ JVMWrapper("JVM_FindClassFromCaller throws ClassNotFoundException");
+ // Java libraries should ensure that name is never null...
+ if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
+ // It's impossible to create this class; the name cannot fit
+ // into the constant pool.
+ THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name);
+ }
+
+ TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL);
+
+ oop loader_oop = JNIHandles::resolve(loader);
+ oop from_class = JNIHandles::resolve(caller);
+ oop protection_domain = NULL;
+ // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get
+ // NPE. Put it in another way, the bootstrap class loader has all permission and
+ // thus no checkPackageAccess equivalence in the VM class loader.
+ // The caller is also passed as NULL by the java code if there is no security
+ // manager to avoid the performance cost of getting the calling class.
+ if (from_class != NULL && loader_oop != NULL) {
+ protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain();
+ }
+
+ Handle h_loader(THREAD, loader_oop);
+ Handle h_prot(THREAD, protection_domain);
+ jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
+ h_prot, false, THREAD);
+
+ if (log_is_enabled(Debug, class, resolve) && result != NULL) {
+ trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
+ }
+ return result;
+JVM_END
+
+// Currently only called from the old verifier.
+JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name,
+ jboolean init, jclass from))
+ JVMWrapper("JVM_FindClassFromClass");
+ if (name == NULL) {
+ THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), "No class name given");
+ }
+ if ((int)strlen(name) > Symbol::max_length()) {
+ // It's impossible to create this class; the name cannot fit
+ // into the constant pool.
+ Exceptions::fthrow(THREAD_AND_LOCATION,
+ vmSymbols::java_lang_NoClassDefFoundError(),
+ "Class name exceeds maximum length of %d: %s",
+ Symbol::max_length(),
+ name);
+ return 0;
+ }
+ TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL);
+ oop from_class_oop = JNIHandles::resolve(from);
+ Klass* from_class = (from_class_oop == NULL)
+ ? (Klass*)NULL
+ : java_lang_Class::as_Klass(from_class_oop);
+ oop class_loader = NULL;
+ oop protection_domain = NULL;
+ if (from_class != NULL) {
+ class_loader = from_class->class_loader();
+ protection_domain = from_class->protection_domain();
+ }
+ Handle h_loader(THREAD, class_loader);
+ Handle h_prot (THREAD, protection_domain);
+ jclass result = find_class_from_class_loader(env, h_name, init, h_loader,
+ h_prot, true, thread);
+
+ if (log_is_enabled(Debug, class, resolve) && result != NULL) {
+ // this function is generally only used for class loading during verification.
+ ResourceMark rm;
+ oop from_mirror = JNIHandles::resolve_non_null(from);
+ Klass* from_class = java_lang_Class::as_Klass(from_mirror);
+ const char * from_name = from_class->external_name();
+
+ oop mirror = JNIHandles::resolve_non_null(result);
+ Klass* to_class = java_lang_Class::as_Klass(mirror);
+ const char * to = to_class->external_name();
+ log_debug(class, resolve)("%s %s (verification)", from_name, to);
+ }
+
+ return result;
+JVM_END
+
+static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) {
+ if (loader.is_null()) {
+ return;
+ }
+
+ // check whether the current caller thread holds the lock or not.
+ // If not, increment the corresponding counter
+ if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) !=
+ ObjectSynchronizer::owner_self) {
+ counter->inc();
+ }
+}
+
+// common code for JVM_DefineClass() and JVM_DefineClassWithSource()
+static jclass jvm_define_class_common(JNIEnv *env, const char *name,
+ jobject loader, const jbyte *buf,
+ jsize len, jobject pd, const char *source,
+ TRAPS) {
+ if (source == NULL) source = "__JVM_DefineClass__";
+
+ assert(THREAD->is_Java_thread(), "must be a JavaThread");
+ JavaThread* jt = (JavaThread*) THREAD;
+
+ PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(),
+ ClassLoader::perf_define_appclass_selftime(),
+ ClassLoader::perf_define_appclasses(),
+ jt->get_thread_stat()->perf_recursion_counts_addr(),
+ jt->get_thread_stat()->perf_timers_addr(),
+ PerfClassTraceTime::DEFINE_CLASS);
+
+ if (UsePerfData) {
+ ClassLoader::perf_app_classfile_bytes_read()->inc(len);
+ }
+
+ // Since exceptions can be thrown, class initialization can take place
+ // if name is NULL no check for class name in .class stream has to be made.
+ TempNewSymbol class_name = NULL;
+ if (name != NULL) {
+ const int str_len = (int)strlen(name);
+ if (str_len > Symbol::max_length()) {
+ // It's impossible to create this class; the name cannot fit
+ // into the constant pool.
+ Exceptions::fthrow(THREAD_AND_LOCATION,
+ vmSymbols::java_lang_NoClassDefFoundError(),
+ "Class name exceeds maximum length of %d: %s",
+ Symbol::max_length(),
+ name);
+ return 0;
+ }
+ class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL);
+ }
+
+ ResourceMark rm(THREAD);
+ ClassFileStream st((u1*)buf, len, source, ClassFileStream::verify);
+ Handle class_loader (THREAD, JNIHandles::resolve(loader));
+ if (UsePerfData) {
+ is_lock_held_by_thread(class_loader,
+ ClassLoader::sync_JVMDefineClassLockFreeCounter(),
+ THREAD);
+ }
+ Handle protection_domain (THREAD, JNIHandles::resolve(pd));
+ Klass* k = SystemDictionary::resolve_from_stream(class_name,
+ class_loader,
+ protection_domain,
+ &st,
+ CHECK_NULL);
+
+ if (log_is_enabled(Debug, class, resolve) && k != NULL) {
+ trace_class_resolution(k);
+ }
+
+ return (jclass) JNIHandles::make_local(env, k->java_mirror());
+}
+
+
+JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd))
+ JVMWrapper("JVM_DefineClass");
+
+ return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, THREAD);
+JVM_END
+
+
+JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source))
+ JVMWrapper("JVM_DefineClassWithSource");
+
+ return jvm_define_class_common(env, name, loader, buf, len, pd, source, THREAD);
+JVM_END
+
+JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name))
+ JVMWrapper("JVM_FindLoadedClass");
+ ResourceMark rm(THREAD);
+
+ Handle h_name (THREAD, JNIHandles::resolve_non_null(name));
+ Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL);
+
+ const char* str = java_lang_String::as_utf8_string(string());
+ // Sanity check, don't expect null
+ if (str == NULL) return NULL;
+
+ const int str_len = (int)strlen(str);
+ if (str_len > Symbol::max_length()) {
+ // It's impossible to create this class; the name cannot fit
+ // into the constant pool.
+ return NULL;
+ }
+ TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL);
+
+ // Security Note:
+ // The Java level wrapper will perform the necessary security check allowing
+ // us to pass the NULL as the initiating class loader.
+ Handle h_loader(THREAD, JNIHandles::resolve(loader));
+ if (UsePerfData) {
+ is_lock_held_by_thread(h_loader,
+ ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(),
+ THREAD);
+ }
+
+ Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name,
+ h_loader,
+ Handle(),
+ CHECK_NULL);
+#if INCLUDE_CDS
+ if (k == NULL) {
+ // If the class is not already loaded, try to see if it's in the shared
+ // archive for the current classloader (h_loader).
+ k = SystemDictionaryShared::find_or_load_shared_class(klass_name, h_loader, CHECK_NULL);
+ }
+#endif
+ return (k == NULL) ? NULL :
+ (jclass) JNIHandles::make_local(env, k->java_mirror());
+JVM_END
+
+// Module support //////////////////////////////////////////////////////////////////////////////
+
+JVM_ENTRY(void, JVM_DefineModule(JNIEnv *env, jobject module, jboolean is_open, jstring version,
+ jstring location, const char* const* packages, jsize num_packages))
+ JVMWrapper("JVM_DefineModule");
+ Modules::define_module(module, is_open, version, location, packages, num_packages, CHECK);
+JVM_END
+
+JVM_ENTRY(void, JVM_SetBootLoaderUnnamedModule(JNIEnv *env, jobject module))
+ JVMWrapper("JVM_SetBootLoaderUnnamedModule");
+ Modules::set_bootloader_unnamed_module(module, CHECK);
+JVM_END
+
+JVM_ENTRY(void, JVM_AddModuleExports(JNIEnv *env, jobject from_module, const char* package, jobject to_module))
+ JVMWrapper("JVM_AddModuleExports");
+ Modules::add_module_exports_qualified(from_module, package, to_module, CHECK);
+JVM_END
+
+JVM_ENTRY(void, JVM_AddModuleExportsToAllUnnamed(JNIEnv *env, jobject from_module, const char* package))
+ JVMWrapper("JVM_AddModuleExportsToAllUnnamed");
+ Modules::add_module_exports_to_all_unnamed(from_module, package, CHECK);
+JVM_END
+
+JVM_ENTRY(void, JVM_AddModuleExportsToAll(JNIEnv *env, jobject from_module, const char* package))
+ JVMWrapper("JVM_AddModuleExportsToAll");
+ Modules::add_module_exports(from_module, package, NULL, CHECK);
+JVM_END
+
+JVM_ENTRY (void, JVM_AddReadsModule(JNIEnv *env, jobject from_module, jobject source_module))
+ JVMWrapper("JVM_AddReadsModule");
+ Modules::add_reads_module(from_module, source_module, CHECK);
+JVM_END
+
+// Reflection support //////////////////////////////////////////////////////////////////////////////
+
+JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls))
+ assert (cls != NULL, "illegal class");
+ JVMWrapper("JVM_GetClassName");
+ JvmtiVMObjectAllocEventCollector oam;
+ ResourceMark rm(THREAD);
+ const char* name;
+ if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
+ name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls)));
+ } else {
+ // Consider caching interned string in Klass
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls));
+ assert(k->is_klass(), "just checking");
+ name = k->external_name();
+ }
+ oop result = StringTable::intern((char*) name, CHECK_NULL);
+ return (jstring) JNIHandles::make_local(env, result);
+JVM_END
+
+
+JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetClassInterfaces");
+ JvmtiVMObjectAllocEventCollector oam;
+ oop mirror = JNIHandles::resolve_non_null(cls);
+
+ // Special handling for primitive objects
+ if (java_lang_Class::is_primitive(mirror)) {
+ // Primitive objects does not have any interfaces
+ objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL);
+ return (jobjectArray) JNIHandles::make_local(env, r);
+ }
+
+ Klass* klass = java_lang_Class::as_Klass(mirror);
+ // Figure size of result array
+ int size;
+ if (klass->is_instance_klass()) {
+ size = InstanceKlass::cast(klass)->local_interfaces()->length();
+ } else {
+ assert(klass->is_objArray_klass() || klass->is_typeArray_klass(), "Illegal mirror klass");
+ size = 2;
+ }
+
+ // Allocate result array
+ objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL);
+ objArrayHandle result (THREAD, r);
+ // Fill in result
+ if (klass->is_instance_klass()) {
+ // Regular instance klass, fill in all local interfaces
+ for (int index = 0; index < size; index++) {
+ Klass* k = InstanceKlass::cast(klass)->local_interfaces()->at(index);
+ result->obj_at_put(index, k->java_mirror());
+ }
+ } else {
+ // All arrays implement java.lang.Cloneable and java.io.Serializable
+ result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror());
+ result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror());
+ }
+ return (jobjectArray) JNIHandles::make_local(env, result());
+JVM_END
+
+
+JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_IsInterface");
+ oop mirror = JNIHandles::resolve_non_null(cls);
+ if (java_lang_Class::is_primitive(mirror)) {
+ return JNI_FALSE;
+ }
+ Klass* k = java_lang_Class::as_Klass(mirror);
+ jboolean result = k->is_interface();
+ assert(!result || k->is_instance_klass(),
+ "all interfaces are instance types");
+ // The compiler intrinsic for isInterface tests the
+ // Klass::_access_flags bits in the same way.
+ return result;
+JVM_END
+
+
+JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetClassSigners");
+ JvmtiVMObjectAllocEventCollector oam;
+ if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
+ // There are no signers for primitive types
+ return NULL;
+ }
+
+ objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls));
+
+ // If there are no signers set in the class, or if the class
+ // is an array, return NULL.
+ if (signers == NULL) return NULL;
+
+ // copy of the signers array
+ Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass();
+ objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL);
+ for (int index = 0; index < signers->length(); index++) {
+ signers_copy->obj_at_put(index, signers->obj_at(index));
+ }
+
+ // return the copy
+ return (jobjectArray) JNIHandles::make_local(env, signers_copy);
+JVM_END
+
+
+JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers))
+ JVMWrapper("JVM_SetClassSigners");
+ if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
+ // This call is ignored for primitive types and arrays.
+ // Signers are only set once, ClassLoader.java, and thus shouldn't
+ // be called with an array. Only the bootstrap loader creates arrays.
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ if (k->is_instance_klass()) {
+ java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers)));
+ }
+ }
+JVM_END
+
+
+JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetProtectionDomain");
+ if (JNIHandles::resolve(cls) == NULL) {
+ THROW_(vmSymbols::java_lang_NullPointerException(), NULL);
+ }
+
+ if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
+ // Primitive types does not have a protection domain.
+ return NULL;
+ }
+
+ oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls));
+ return (jobject) JNIHandles::make_local(env, pd);
+JVM_END
+
+
+static bool is_authorized(Handle context, InstanceKlass* klass, TRAPS) {
+ // If there is a security manager and protection domain, check the access
+ // in the protection domain, otherwise it is authorized.
+ if (java_lang_System::has_security_manager()) {
+
+ // For bootstrapping, if pd implies method isn't in the JDK, allow
+ // this context to revert to older behavior.
+ // In this case the isAuthorized field in AccessControlContext is also not
+ // present.
+ if (Universe::protection_domain_implies_method() == NULL) {
+ return true;
+ }
+
+ // Whitelist certain access control contexts
+ if (java_security_AccessControlContext::is_authorized(context)) {
+ return true;
+ }
+
+ oop prot = klass->protection_domain();
+ if (prot != NULL) {
+ // Call pd.implies(new SecurityPermission("createAccessControlContext"))
+ // in the new wrapper.
+ methodHandle m(THREAD, Universe::protection_domain_implies_method());
+ Handle h_prot(THREAD, prot);
+ JavaValue result(T_BOOLEAN);
+ JavaCallArguments args(h_prot);
+ JavaCalls::call(&result, m, &args, CHECK_false);
+ return (result.get_jboolean() != 0);
+ }
+ }
+ return true;
+}
+
+// Create an AccessControlContext with a protection domain with null codesource
+// and null permissions - which gives no permissions.
+oop create_dummy_access_control_context(TRAPS) {
+ InstanceKlass* pd_klass = SystemDictionary::ProtectionDomain_klass();
+ Handle obj = pd_klass->allocate_instance_handle(CHECK_NULL);
+ // Call constructor ProtectionDomain(null, null);
+ JavaValue result(T_VOID);
+ JavaCalls::call_special(&result, obj, pd_klass,
+ vmSymbols::object_initializer_name(),
+ vmSymbols::codesource_permissioncollection_signature(),
+ Handle(), Handle(), CHECK_NULL);
+
+ // new ProtectionDomain[] {pd};
+ objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL);
+ context->obj_at_put(0, obj());
+
+ // new AccessControlContext(new ProtectionDomain[] {pd})
+ objArrayHandle h_context(THREAD, context);
+ oop acc = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL);
+ return acc;
+}
+
+JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException))
+ JVMWrapper("JVM_DoPrivileged");
+
+ if (action == NULL) {
+ THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action");
+ }
+
+ // Compute the frame initiating the do privileged operation and setup the privileged stack
+ vframeStream vfst(thread);
+ vfst.security_get_caller_frame(1);
+
+ if (vfst.at_end()) {
+ THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?");
+ }
+
+ Method* method = vfst.method();
+ InstanceKlass* klass = method->method_holder();
+
+ // Check that action object understands "Object run()"
+ Handle h_context;
+ if (context != NULL) {
+ h_context = Handle(THREAD, JNIHandles::resolve(context));
+ bool authorized = is_authorized(h_context, klass, CHECK_NULL);
+ if (!authorized) {
+ // Create an unprivileged access control object and call it's run function
+ // instead.
+ oop noprivs = create_dummy_access_control_context(CHECK_NULL);
+ h_context = Handle(THREAD, noprivs);
+ }
+ }
+
+ // Check that action object understands "Object run()"
+ Handle object (THREAD, JNIHandles::resolve(action));
+
+ // get run() method
+ Method* m_oop = object->klass()->uncached_lookup_method(
+ vmSymbols::run_method_name(),
+ vmSymbols::void_object_signature(),
+ Klass::find_overpass);
+
+ // See if there is a default method for "Object run()".
+ if (m_oop == NULL && object->klass()->is_instance_klass()) {
+ InstanceKlass* iklass = InstanceKlass::cast(object->klass());
+ m_oop = iklass->lookup_method_in_ordered_interfaces(
+ vmSymbols::run_method_name(),
+ vmSymbols::void_object_signature());
+ }
+
+ methodHandle m (THREAD, m_oop);
+ if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static() || m()->is_abstract()) {
+ THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method");
+ }
+
+ // Stack allocated list of privileged stack elements
+ PrivilegedElement pi;
+ if (!vfst.at_end()) {
+ pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL);
+ thread->set_privileged_stack_top(&pi);
+ }
+
+
+ // invoke the Object run() in the action object. We cannot use call_interface here, since the static type
+ // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction
+ Handle pending_exception;
+ JavaValue result(T_OBJECT);
+ JavaCallArguments args(object);
+ JavaCalls::call(&result, m, &args, THREAD);
+
+ // done with action, remove ourselves from the list
+ if (!vfst.at_end()) {
+ assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element");
+ thread->set_privileged_stack_top(thread->privileged_stack_top()->next());
+ }
+
+ if (HAS_PENDING_EXCEPTION) {
+ pending_exception = Handle(THREAD, PENDING_EXCEPTION);
+ CLEAR_PENDING_EXCEPTION;
+ // JVMTI has already reported the pending exception
+ // JVMTI internal flag reset is needed in order to report PrivilegedActionException
+ if (THREAD->is_Java_thread()) {
+ JvmtiExport::clear_detected_exception((JavaThread*) THREAD);
+ }
+ if ( pending_exception->is_a(SystemDictionary::Exception_klass()) &&
+ !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) {
+ // Throw a java.security.PrivilegedActionException(Exception e) exception
+ JavaCallArguments args(pending_exception);
+ THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(),
+ vmSymbols::exception_void_signature(),
+ &args);
+ }
+ }
+
+ if (pending_exception.not_null()) THROW_OOP_0(pending_exception());
+ return JNIHandles::make_local(env, (oop) result.get_jobject());
+JVM_END
+
+
+// Returns the inherited_access_control_context field of the running thread.
+JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetInheritedAccessControlContext");
+ oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj());
+ return JNIHandles::make_local(env, result);
+JVM_END
+
+class RegisterArrayForGC {
+ private:
+ JavaThread *_thread;
+ public:
+ RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) {
+ _thread = thread;
+ _thread->register_array_for_gc(array);
+ }
+
+ ~RegisterArrayForGC() {
+ _thread->register_array_for_gc(NULL);
+ }
+};
+
+
+JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetStackAccessControlContext");
+ if (!UsePrivilegedStack) return NULL;
+
+ ResourceMark rm(THREAD);
+ GrowableArray<oop>* local_array = new GrowableArray<oop>(12);
+ JvmtiVMObjectAllocEventCollector oam;
+
+ // count the protection domains on the execution stack. We collapse
+ // duplicate consecutive protection domains into a single one, as
+ // well as stopping when we hit a privileged frame.
+
+ // Use vframeStream to iterate through Java frames
+ vframeStream vfst(thread);
+
+ oop previous_protection_domain = NULL;
+ Handle privileged_context(thread, NULL);
+ bool is_privileged = false;
+ oop protection_domain = NULL;
+
+ for(; !vfst.at_end(); vfst.next()) {
+ // get method of frame
+ Method* method = vfst.method();
+ intptr_t* frame_id = vfst.frame_id();
+
+ // check the privileged frames to see if we have a match
+ if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) {
+ // this frame is privileged
+ is_privileged = true;
+ privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context());
+ protection_domain = thread->privileged_stack_top()->protection_domain();
+ } else {
+ protection_domain = method->method_holder()->protection_domain();
+ }
+
+ if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) {
+ local_array->push(protection_domain);
+ previous_protection_domain = protection_domain;
+ }
+
+ if (is_privileged) break;
+ }
+
+
+ // either all the domains on the stack were system domains, or
+ // we had a privileged system domain
+ if (local_array->is_empty()) {
+ if (is_privileged && privileged_context.is_null()) return NULL;
+
+ oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL);
+ return JNIHandles::make_local(env, result);
+ }
+
+ // the resource area must be registered in case of a gc
+ RegisterArrayForGC ragc(thread, local_array);
+ objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(),
+ local_array->length(), CHECK_NULL);
+ objArrayHandle h_context(thread, context);
+ for (int index = 0; index < local_array->length(); index++) {
+ h_context->obj_at_put(index, local_array->at(index));
+ }
+
+ oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL);
+
+ return JNIHandles::make_local(env, result);
+JVM_END
+
+
+JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_IsArrayClass");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ return (k != NULL) && k->is_array_klass() ? true : false;
+JVM_END
+
+
+JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_IsPrimitiveClass");
+ oop mirror = JNIHandles::resolve_non_null(cls);
+ return (jboolean) java_lang_Class::is_primitive(mirror);
+JVM_END
+
+
+JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetClassModifiers");
+ if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
+ // Primitive type
+ return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
+ }
+
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0));
+ assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK");
+ return k->modifier_flags();
+JVM_END
+
+
+// Inner class reflection ///////////////////////////////////////////////////////////////////////////////
+
+JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass))
+ JvmtiVMObjectAllocEventCollector oam;
+ // ofClass is a reference to a java_lang_Class object. The mirror object
+ // of an InstanceKlass
+
+ if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) ||
+ ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->is_instance_klass()) {
+ oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL);
+ return (jobjectArray)JNIHandles::make_local(env, result);
+ }
+
+ InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)));
+ InnerClassesIterator iter(k);
+
+ if (iter.length() == 0) {
+ // Neither an inner nor outer class
+ oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL);
+ return (jobjectArray)JNIHandles::make_local(env, result);
+ }
+
+ // find inner class info
+ constantPoolHandle cp(thread, k->constants());
+ int length = iter.length();
+
+ // Allocate temp. result array
+ objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL);
+ objArrayHandle result (THREAD, r);
+ int members = 0;
+
+ for (; !iter.done(); iter.next()) {
+ int ioff = iter.inner_class_info_index();
+ int ooff = iter.outer_class_info_index();
+
+ if (ioff != 0 && ooff != 0) {
+ // Check to see if the name matches the class we're looking for
+ // before attempting to find the class.
+ if (cp->klass_name_at_matches(k, ooff)) {
+ Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL);
+ if (outer_klass == k) {
+ Klass* ik = cp->klass_at(ioff, CHECK_NULL);
+ InstanceKlass* inner_klass = InstanceKlass::cast(ik);
+
+ // Throws an exception if outer klass has not declared k as
+ // an inner klass
+ Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL);
+
+ result->obj_at_put(members, inner_klass->java_mirror());
+ members++;
+ }
+ }
+ }
+ }
+
+ if (members != length) {
+ // Return array of right length
+ objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL);
+ for(int i = 0; i < members; i++) {
+ res->obj_at_put(i, result->obj_at(i));
+ }
+ return (jobjectArray)JNIHandles::make_local(env, res);
+ }
+
+ return (jobjectArray)JNIHandles::make_local(env, result());
+JVM_END
+
+
+JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass))
+{
+ // ofClass is a reference to a java_lang_Class object.
+ if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) ||
+ ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->is_instance_klass()) {
+ return NULL;
+ }
+
+ bool inner_is_member = false;
+ Klass* outer_klass
+ = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))
+ )->compute_enclosing_class(&inner_is_member, CHECK_NULL);
+ if (outer_klass == NULL) return NULL; // already a top-level class
+ if (!inner_is_member) return NULL; // an anonymous class (inside a method)
+ return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror());
+}
+JVM_END
+
+JVM_ENTRY(jstring, JVM_GetSimpleBinaryName(JNIEnv *env, jclass cls))
+{
+ oop mirror = JNIHandles::resolve_non_null(cls);
+ if (java_lang_Class::is_primitive(mirror) ||
+ !java_lang_Class::as_Klass(mirror)->is_instance_klass()) {
+ return NULL;
+ }
+ InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
+ int ooff = 0, noff = 0;
+ if (k->find_inner_classes_attr(&ooff, &noff, THREAD)) {
+ if (noff != 0) {
+ constantPoolHandle i_cp(thread, k->constants());
+ Symbol* name = i_cp->symbol_at(noff);
+ Handle str = java_lang_String::create_from_symbol(name, CHECK_NULL);
+ return (jstring) JNIHandles::make_local(env, str());
+ }
+ }
+ return NULL;
+}
+JVM_END
+
+JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls))
+ assert (cls != NULL, "illegal class");
+ JVMWrapper("JVM_GetClassSignature");
+ JvmtiVMObjectAllocEventCollector oam;
+ ResourceMark rm(THREAD);
+ // Return null for arrays and primatives
+ if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls));
+ if (k->is_instance_klass()) {
+ Symbol* sym = InstanceKlass::cast(k)->generic_signature();
+ if (sym == NULL) return NULL;
+ Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
+ return (jstring) JNIHandles::make_local(env, str());
+ }
+ }
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls))
+ assert (cls != NULL, "illegal class");
+ JVMWrapper("JVM_GetClassAnnotations");
+
+ // Return null for arrays and primitives
+ if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls));
+ if (k->is_instance_klass()) {
+ typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL);
+ return (jbyteArray) JNIHandles::make_local(env, a);
+ }
+ }
+ return NULL;
+JVM_END
+
+
+static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) {
+ // some of this code was adapted from from jni_FromReflectedField
+
+ oop reflected = JNIHandles::resolve_non_null(field);
+ oop mirror = java_lang_reflect_Field::clazz(reflected);
+ Klass* k = java_lang_Class::as_Klass(mirror);
+ int slot = java_lang_reflect_Field::slot(reflected);
+ int modifiers = java_lang_reflect_Field::modifiers(reflected);
+
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ intptr_t offset = ik->field_offset(slot);
+
+ if (modifiers & JVM_ACC_STATIC) {
+ // for static fields we only look in the current class
+ if (!ik->find_local_field_from_offset(offset, true, &fd)) {
+ assert(false, "cannot find static field");
+ return false;
+ }
+ } else {
+ // for instance fields we start with the current class and work
+ // our way up through the superclass chain
+ if (!ik->find_field_from_offset(offset, false, &fd)) {
+ assert(false, "cannot find instance field");
+ return false;
+ }
+ }
+ return true;
+}
+
+static Method* jvm_get_method_common(jobject method) {
+ // some of this code was adapted from from jni_FromReflectedMethod
+
+ oop reflected = JNIHandles::resolve_non_null(method);
+ oop mirror = NULL;
+ int slot = 0;
+
+ if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
+ mirror = java_lang_reflect_Constructor::clazz(reflected);
+ slot = java_lang_reflect_Constructor::slot(reflected);
+ } else {
+ assert(reflected->klass() == SystemDictionary::reflect_Method_klass(),
+ "wrong type");
+ mirror = java_lang_reflect_Method::clazz(reflected);
+ slot = java_lang_reflect_Method::slot(reflected);
+ }
+ Klass* k = java_lang_Class::as_Klass(mirror);
+
+ Method* m = InstanceKlass::cast(k)->method_with_idnum(slot);
+ assert(m != NULL, "cannot find method");
+ return m; // caller has to deal with NULL in product mode
+}
+
+/* Type use annotations support (JDK 1.8) */
+
+JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls))
+ assert (cls != NULL, "illegal class");
+ JVMWrapper("JVM_GetClassTypeAnnotations");
+ ResourceMark rm(THREAD);
+ // Return null for arrays and primitives
+ if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) {
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls));
+ if (k->is_instance_klass()) {
+ AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations();
+ if (type_annotations != NULL) {
+ typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL);
+ return (jbyteArray) JNIHandles::make_local(env, a);
+ }
+ }
+ }
+ return NULL;
+JVM_END
+
+JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method))
+ assert (method != NULL, "illegal method");
+ JVMWrapper("JVM_GetMethodTypeAnnotations");
+
+ // method is a handle to a java.lang.reflect.Method object
+ Method* m = jvm_get_method_common(method);
+ if (m == NULL) {
+ return NULL;
+ }
+
+ AnnotationArray* type_annotations = m->type_annotations();
+ if (type_annotations != NULL) {
+ typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL);
+ return (jbyteArray) JNIHandles::make_local(env, a);
+ }
+
+ return NULL;
+JVM_END
+
+JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field))
+ assert (field != NULL, "illegal field");
+ JVMWrapper("JVM_GetFieldTypeAnnotations");
+
+ fieldDescriptor fd;
+ bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL);
+ if (!gotFd) {
+ return NULL;
+ }
+
+ return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD));
+JVM_END
+
+static void bounds_check(const constantPoolHandle& cp, jint index, TRAPS) {
+ if (!cp->is_within_bounds(index)) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds");
+ }
+}
+
+JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method))
+{
+ JVMWrapper("JVM_GetMethodParameters");
+ // method is a handle to a java.lang.reflect.Method object
+ Method* method_ptr = jvm_get_method_common(method);
+ methodHandle mh (THREAD, method_ptr);
+ Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method));
+ const int num_params = mh->method_parameters_length();
+
+ if (num_params < 0) {
+ // A -1 return value from method_parameters_length means there is no
+ // parameter data. Return null to indicate this to the reflection
+ // API.
+ assert(num_params == -1, "num_params should be -1 if it is less than zero");
+ return (jobjectArray)NULL;
+ } else {
+ // Otherwise, we return something up to reflection, even if it is
+ // a zero-length array. Why? Because in some cases this can
+ // trigger a MalformedParametersException.
+
+ // make sure all the symbols are properly formatted
+ for (int i = 0; i < num_params; i++) {
+ MethodParametersElement* params = mh->method_parameters_start();
+ int index = params[i].name_cp_index;
+ bounds_check(mh->constants(), index, CHECK_NULL);
+
+ if (0 != index && !mh->constants()->tag_at(index).is_utf8()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
+ "Wrong type at constant pool index");
+ }
+
+ }
+
+ objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL);
+ objArrayHandle result (THREAD, result_oop);
+
+ for (int i = 0; i < num_params; i++) {
+ MethodParametersElement* params = mh->method_parameters_start();
+ // For a 0 index, give a NULL symbol
+ Symbol* sym = 0 != params[i].name_cp_index ?
+ mh->constants()->symbol_at(params[i].name_cp_index) : NULL;
+ int flags = params[i].flags;
+ oop param = Reflection::new_parameter(reflected_method, i, sym,
+ flags, CHECK_NULL);
+ result->obj_at_put(i, param);
+ }
+ return (jobjectArray)JNIHandles::make_local(env, result());
+ }
+}
+JVM_END
+
+// New (JDK 1.4) reflection implementation /////////////////////////////////////
+
+JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly))
+{
+ JVMWrapper("JVM_GetClassDeclaredFields");
+ JvmtiVMObjectAllocEventCollector oam;
+
+ // Exclude primitive types and array types
+ if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) ||
+ java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->is_array_klass()) {
+ // Return empty array
+ oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL);
+ return (jobjectArray) JNIHandles::make_local(env, res);
+ }
+
+ InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)));
+ constantPoolHandle cp(THREAD, k->constants());
+
+ // Ensure class is linked
+ k->link_class(CHECK_NULL);
+
+ // Allocate result
+ int num_fields;
+
+ if (publicOnly) {
+ num_fields = 0;
+ for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
+ if (fs.access_flags().is_public()) ++num_fields;
+ }
+ } else {
+ num_fields = k->java_fields_count();
+ }
+
+ objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL);
+ objArrayHandle result (THREAD, r);
+
+ int out_idx = 0;
+ fieldDescriptor fd;
+ for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
+ if (!publicOnly || fs.access_flags().is_public()) {
+ fd.reinitialize(k, fs.index());
+ oop field = Reflection::new_field(&fd, CHECK_NULL);
+ result->obj_at_put(out_idx, field);
+ ++out_idx;
+ }
+ }
+ assert(out_idx == num_fields, "just checking");
+ return (jobjectArray) JNIHandles::make_local(env, result());
+}
+JVM_END
+
+static bool select_method(const methodHandle& method, bool want_constructor) {
+ if (want_constructor) {
+ return (method->is_initializer() && !method->is_static());
+ } else {
+ return (!method->is_initializer() && !method->is_overpass());
+ }
+}
+
+static jobjectArray get_class_declared_methods_helper(
+ JNIEnv *env,
+ jclass ofClass, jboolean publicOnly,
+ bool want_constructor,
+ Klass* klass, TRAPS) {
+
+ JvmtiVMObjectAllocEventCollector oam;
+
+ // Exclude primitive types and array types
+ if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass))
+ || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->is_array_klass()) {
+ // Return empty array
+ oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL);
+ return (jobjectArray) JNIHandles::make_local(env, res);
+ }
+
+ InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)));
+
+ // Ensure class is linked
+ k->link_class(CHECK_NULL);
+
+ Array<Method*>* methods = k->methods();
+ int methods_length = methods->length();
+
+ // Save original method_idnum in case of redefinition, which can change
+ // the idnum of obsolete methods. The new method will have the same idnum
+ // but if we refresh the methods array, the counts will be wrong.
+ ResourceMark rm(THREAD);
+ GrowableArray<int>* idnums = new GrowableArray<int>(methods_length);
+ int num_methods = 0;
+
+ for (int i = 0; i < methods_length; i++) {
+ methodHandle method(THREAD, methods->at(i));
+ if (select_method(method, want_constructor)) {
+ if (!publicOnly || method->is_public()) {
+ idnums->push(method->method_idnum());
+ ++num_methods;
+ }
+ }
+ }
+
+ // Allocate result
+ objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL);
+ objArrayHandle result (THREAD, r);
+
+ // Now just put the methods that we selected above, but go by their idnum
+ // in case of redefinition. The methods can be redefined at any safepoint,
+ // so above when allocating the oop array and below when creating reflect
+ // objects.
+ for (int i = 0; i < num_methods; i++) {
+ methodHandle method(THREAD, k->method_with_idnum(idnums->at(i)));
+ if (method.is_null()) {
+ // Method may have been deleted and seems this API can handle null
+ // Otherwise should probably put a method that throws NSME
+ result->obj_at_put(i, NULL);
+ } else {
+ oop m;
+ if (want_constructor) {
+ m = Reflection::new_constructor(method, CHECK_NULL);
+ } else {
+ m = Reflection::new_method(method, false, CHECK_NULL);
+ }
+ result->obj_at_put(i, m);
+ }
+ }
+
+ return (jobjectArray) JNIHandles::make_local(env, result());
+}
+
+JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly))
+{
+ JVMWrapper("JVM_GetClassDeclaredMethods");
+ return get_class_declared_methods_helper(env, ofClass, publicOnly,
+ /*want_constructor*/ false,
+ SystemDictionary::reflect_Method_klass(), THREAD);
+}
+JVM_END
+
+JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly))
+{
+ JVMWrapper("JVM_GetClassDeclaredConstructors");
+ return get_class_declared_methods_helper(env, ofClass, publicOnly,
+ /*want_constructor*/ true,
+ SystemDictionary::reflect_Constructor_klass(), THREAD);
+}
+JVM_END
+
+JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls))
+{
+ JVMWrapper("JVM_GetClassAccessFlags");
+ if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
+ // Primitive type
+ return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
+ }
+
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS;
+}
+JVM_END
+
+
+// Constant pool access //////////////////////////////////////////////////////////
+
+JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls))
+{
+ JVMWrapper("JVM_GetClassConstantPool");
+ JvmtiVMObjectAllocEventCollector oam;
+
+ // Return null for primitives and arrays
+ if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) {
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ if (k->is_instance_klass()) {
+ InstanceKlass* k_h = InstanceKlass::cast(k);
+ Handle jcp = reflect_ConstantPool::create(CHECK_NULL);
+ reflect_ConstantPool::set_cp(jcp(), k_h->constants());
+ return JNIHandles::make_local(jcp());
+ }
+ }
+ return NULL;
+}
+JVM_END
+
+
+JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused))
+{
+ JVMWrapper("JVM_ConstantPoolGetSize");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ return cp->length();
+}
+JVM_END
+
+
+JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetClassAt");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_klass() && !tag.is_unresolved_klass()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ Klass* k = cp->klass_at(index, CHECK_NULL);
+ return (jclass) JNIHandles::make_local(k->java_mirror());
+}
+JVM_END
+
+JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_klass() && !tag.is_unresolved_klass()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ Klass* k = ConstantPool::klass_at_if_loaded(cp, index);
+ if (k == NULL) return NULL;
+ return (jclass) JNIHandles::make_local(k->java_mirror());
+}
+JVM_END
+
+static jobject get_method_at_helper(const constantPoolHandle& cp, jint index, bool force_resolution, TRAPS) {
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_method() && !tag.is_interface_method()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ int klass_ref = cp->uncached_klass_ref_index_at(index);
+ Klass* k_o;
+ if (force_resolution) {
+ k_o = cp->klass_at(klass_ref, CHECK_NULL);
+ } else {
+ k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref);
+ if (k_o == NULL) return NULL;
+ }
+ InstanceKlass* k = InstanceKlass::cast(k_o);
+ Symbol* name = cp->uncached_name_ref_at(index);
+ Symbol* sig = cp->uncached_signature_ref_at(index);
+ methodHandle m (THREAD, k->find_method(name, sig));
+ if (m.is_null()) {
+ THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class");
+ }
+ oop method;
+ if (!m->is_initializer() || m->is_static()) {
+ method = Reflection::new_method(m, true, CHECK_NULL);
+ } else {
+ method = Reflection::new_constructor(m, CHECK_NULL);
+ }
+ return JNIHandles::make_local(method);
+}
+
+JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetMethodAt");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ jobject res = get_method_at_helper(cp, index, true, CHECK_NULL);
+ return res;
+}
+JVM_END
+
+JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ jobject res = get_method_at_helper(cp, index, false, CHECK_NULL);
+ return res;
+}
+JVM_END
+
+static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) {
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_field()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ int klass_ref = cp->uncached_klass_ref_index_at(index);
+ Klass* k_o;
+ if (force_resolution) {
+ k_o = cp->klass_at(klass_ref, CHECK_NULL);
+ } else {
+ k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref);
+ if (k_o == NULL) return NULL;
+ }
+ InstanceKlass* k = InstanceKlass::cast(k_o);
+ Symbol* name = cp->uncached_name_ref_at(index);
+ Symbol* sig = cp->uncached_signature_ref_at(index);
+ fieldDescriptor fd;
+ Klass* target_klass = k->find_field(name, sig, &fd);
+ if (target_klass == NULL) {
+ THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class");
+ }
+ oop field = Reflection::new_field(&fd, CHECK_NULL);
+ return JNIHandles::make_local(field);
+}
+
+JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetFieldAt");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ jobject res = get_field_at_helper(cp, index, true, CHECK_NULL);
+ return res;
+}
+JVM_END
+
+JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ jobject res = get_field_at_helper(cp, index, false, CHECK_NULL);
+ return res;
+}
+JVM_END
+
+JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_field_or_method()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ int klass_ref = cp->uncached_klass_ref_index_at(index);
+ Symbol* klass_name = cp->klass_name_at(klass_ref);
+ Symbol* member_name = cp->uncached_name_ref_at(index);
+ Symbol* member_sig = cp->uncached_signature_ref_at(index);
+ objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL);
+ objArrayHandle dest(THREAD, dest_o);
+ Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL);
+ dest->obj_at_put(0, str());
+ str = java_lang_String::create_from_symbol(member_name, CHECK_NULL);
+ dest->obj_at_put(1, str());
+ str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL);
+ dest->obj_at_put(2, str());
+ return (jobjectArray) JNIHandles::make_local(dest());
+}
+JVM_END
+
+JVM_ENTRY(jint, JVM_ConstantPoolGetClassRefIndexAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetClassRefIndexAt");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_0);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_field_or_method()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ return (jint) cp->uncached_klass_ref_index_at(index);
+}
+JVM_END
+
+JVM_ENTRY(jint, JVM_ConstantPoolGetNameAndTypeRefIndexAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetNameAndTypeRefIndexAt");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_0);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_invoke_dynamic() && !tag.is_field_or_method()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ return (jint) cp->uncached_name_and_type_ref_index_at(index);
+}
+JVM_END
+
+JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetNameAndTypeRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetNameAndTypeRefInfoAt");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_name_and_type()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ Symbol* member_name = cp->symbol_at(cp->name_ref_index_at(index));
+ Symbol* member_sig = cp->symbol_at(cp->signature_ref_index_at(index));
+ objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 2, CHECK_NULL);
+ objArrayHandle dest(THREAD, dest_o);
+ Handle str = java_lang_String::create_from_symbol(member_name, CHECK_NULL);
+ dest->obj_at_put(0, str());
+ str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL);
+ dest->obj_at_put(1, str());
+ return (jobjectArray) JNIHandles::make_local(dest());
+}
+JVM_END
+
+JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetIntAt");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_0);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_int()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ return cp->int_at(index);
+}
+JVM_END
+
+JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetLongAt");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_(0L));
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_long()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ return cp->long_at(index);
+}
+JVM_END
+
+JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetFloatAt");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_(0.0f));
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_float()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ return cp->float_at(index);
+}
+JVM_END
+
+JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetDoubleAt");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_(0.0));
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_double()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ return cp->double_at(index);
+}
+JVM_END
+
+JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetStringAt");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_string()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ oop str = cp->string_at(index, CHECK_NULL);
+ return (jstring) JNIHandles::make_local(str);
+}
+JVM_END
+
+JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetUTF8At");
+ JvmtiVMObjectAllocEventCollector oam;
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_NULL);
+ constantTag tag = cp->tag_at(index);
+ if (!tag.is_symbol()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index");
+ }
+ Symbol* sym = cp->symbol_at(index);
+ Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
+ return (jstring) JNIHandles::make_local(str());
+}
+JVM_END
+
+JVM_ENTRY(jbyte, JVM_ConstantPoolGetTagAt(JNIEnv *env, jobject obj, jobject unused, jint index))
+{
+ JVMWrapper("JVM_ConstantPoolGetTagAt");
+ constantPoolHandle cp = constantPoolHandle(THREAD, reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj)));
+ bounds_check(cp, index, CHECK_0);
+ constantTag tag = cp->tag_at(index);
+ jbyte result = tag.value();
+ // If returned tag values are not from the JVM spec, e.g. tags from 100 to 105,
+ // they are changed to the corresponding tags from the JVM spec, so that java code in
+ // sun.reflect.ConstantPool will return only tags from the JVM spec, not internal ones.
+ if (tag.is_klass_or_reference()) {
+ result = JVM_CONSTANT_Class;
+ } else if (tag.is_string_index()) {
+ result = JVM_CONSTANT_String;
+ } else if (tag.is_method_type_in_error()) {
+ result = JVM_CONSTANT_MethodType;
+ } else if (tag.is_method_handle_in_error()) {
+ result = JVM_CONSTANT_MethodHandle;
+ }
+ return result;
+}
+JVM_END
+
+// Assertion support. //////////////////////////////////////////////////////////
+
+JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls))
+ JVMWrapper("JVM_DesiredAssertionStatus");
+ assert(cls != NULL, "bad class");
+
+ oop r = JNIHandles::resolve(cls);
+ assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed");
+ if (java_lang_Class::is_primitive(r)) return false;
+
+ Klass* k = java_lang_Class::as_Klass(r);
+ assert(k->is_instance_klass(), "must be an instance klass");
+ if (!k->is_instance_klass()) return false;
+
+ ResourceMark rm(THREAD);
+ const char* name = k->name()->as_C_string();
+ bool system_class = k->class_loader() == NULL;
+ return JavaAssertions::enabled(name, system_class);
+
+JVM_END
+
+
+// Return a new AssertionStatusDirectives object with the fields filled in with
+// command-line assertion arguments (i.e., -ea, -da).
+JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused))
+ JVMWrapper("JVM_AssertionStatusDirectives");
+ JvmtiVMObjectAllocEventCollector oam;
+ oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL);
+ return JNIHandles::make_local(env, asd);
+JVM_END
+
+// Verification ////////////////////////////////////////////////////////////////////////////////
+
+// Reflection for the verifier /////////////////////////////////////////////////////////////////
+
+// RedefineClasses support: bug 6214132 caused verification to fail.
+// All functions from this section should call the jvmtiThreadSate function:
+// Klass* class_to_verify_considering_redefinition(Klass* klass).
+// The function returns a Klass* of the _scratch_class if the verifier
+// was invoked in the middle of the class redefinition.
+// Otherwise it returns its argument value which is the _the_class Klass*.
+// Please, refer to the description in the jvmtiThreadSate.hpp.
+
+JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetClassNameUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ return k->name()->as_utf8();
+JVM_END
+
+
+JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types))
+ JVMWrapper("JVM_GetClassCPTypes");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ // types will have length zero if this is not an InstanceKlass
+ // (length is determined by call to JVM_GetClassCPEntriesCount)
+ if (k->is_instance_klass()) {
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ for (int index = cp->length() - 1; index >= 0; index--) {
+ constantTag tag = cp->tag_at(index);
+ types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value();
+ }
+ }
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetClassCPEntriesCount");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->constants()->length();
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetClassFieldsCount");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->java_fields_count();
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls))
+ JVMWrapper("JVM_GetClassMethodsCount");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ return (!k->is_instance_klass()) ? 0 : InstanceKlass::cast(k)->methods()->length();
+JVM_END
+
+
+// The following methods, used for the verifier, are never called with
+// array klasses, so a direct cast to InstanceKlass is safe.
+// Typically, these methods are called in a loop with bounds determined
+// by the results of JVM_GetClass{Fields,Methods}Count, which return
+// zero for arrays.
+JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions))
+ JVMWrapper("JVM_GetMethodIxExceptionIndexes");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ int length = method->checked_exceptions_length();
+ if (length > 0) {
+ CheckedExceptionElement* table= method->checked_exceptions_start();
+ for (int i = 0; i < length; i++) {
+ exceptions[i] = table[i].class_cp_index;
+ }
+ }
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index))
+ JVMWrapper("JVM_GetMethodIxExceptionsCount");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->checked_exceptions_length();
+JVM_END
+
+
+JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code))
+ JVMWrapper("JVM_GetMethodIxByteCode");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ memcpy(code, method->code_base(), method->code_size());
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index))
+ JVMWrapper("JVM_GetMethodIxByteCodeLength");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->code_size();
+JVM_END
+
+
+JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry))
+ JVMWrapper("JVM_GetMethodIxExceptionTableEntry");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ ExceptionTable extable(method);
+ entry->start_pc = extable.start_pc(entry_index);
+ entry->end_pc = extable.end_pc(entry_index);
+ entry->handler_pc = extable.handler_pc(entry_index);
+ entry->catchType = extable.catch_type_index(entry_index);
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index))
+ JVMWrapper("JVM_GetMethodIxExceptionTableLength");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->exception_table_length();
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index))
+ JVMWrapper("JVM_GetMethodIxModifiers");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index))
+ JVMWrapper("JVM_GetFieldIxModifiers");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS;
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index))
+ JVMWrapper("JVM_GetMethodIxLocalsCount");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->max_locals();
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index))
+ JVMWrapper("JVM_GetMethodIxArgsSize");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->size_of_parameters();
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index))
+ JVMWrapper("JVM_GetMethodIxMaxStack");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->verifier_max_stack();
+JVM_END
+
+
+JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index))
+ JVMWrapper("JVM_IsConstructorIx");
+ ResourceMark rm(THREAD);
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->name() == vmSymbols::object_initializer_name();
+JVM_END
+
+
+JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index))
+ JVMWrapper("JVM_IsVMGeneratedMethodIx");
+ ResourceMark rm(THREAD);
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->is_overpass();
+JVM_END
+
+JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index))
+ JVMWrapper("JVM_GetMethodIxIxUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->name()->as_utf8();
+JVM_END
+
+
+JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index))
+ JVMWrapper("JVM_GetMethodIxSignatureUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ Method* method = InstanceKlass::cast(k)->methods()->at(method_index);
+ return method->signature()->as_utf8();
+JVM_END
+
+/**
+ * All of these JVM_GetCP-xxx methods are used by the old verifier to
+ * read entries in the constant pool. Since the old verifier always
+ * works on a copy of the code, it will not see any rewriting that
+ * may possibly occur in the middle of verification. So it is important
+ * that nothing it calls tries to use the cpCache instead of the raw
+ * constant pool, so we must use cp->uncached_x methods when appropriate.
+ */
+JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index))
+ JVMWrapper("JVM_GetCPFieldNameUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ switch (cp->tag_at(cp_index).value()) {
+ case JVM_CONSTANT_Fieldref:
+ return cp->uncached_name_ref_at(cp_index)->as_utf8();
+ default:
+ fatal("JVM_GetCPFieldNameUTF: illegal constant");
+ }
+ ShouldNotReachHere();
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index))
+ JVMWrapper("JVM_GetCPMethodNameUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ switch (cp->tag_at(cp_index).value()) {
+ case JVM_CONSTANT_InterfaceMethodref:
+ case JVM_CONSTANT_Methodref:
+ return cp->uncached_name_ref_at(cp_index)->as_utf8();
+ default:
+ fatal("JVM_GetCPMethodNameUTF: illegal constant");
+ }
+ ShouldNotReachHere();
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index))
+ JVMWrapper("JVM_GetCPMethodSignatureUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ switch (cp->tag_at(cp_index).value()) {
+ case JVM_CONSTANT_InterfaceMethodref:
+ case JVM_CONSTANT_Methodref:
+ return cp->uncached_signature_ref_at(cp_index)->as_utf8();
+ default:
+ fatal("JVM_GetCPMethodSignatureUTF: illegal constant");
+ }
+ ShouldNotReachHere();
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index))
+ JVMWrapper("JVM_GetCPFieldSignatureUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ switch (cp->tag_at(cp_index).value()) {
+ case JVM_CONSTANT_Fieldref:
+ return cp->uncached_signature_ref_at(cp_index)->as_utf8();
+ default:
+ fatal("JVM_GetCPFieldSignatureUTF: illegal constant");
+ }
+ ShouldNotReachHere();
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
+ JVMWrapper("JVM_GetCPClassNameUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ Symbol* classname = cp->klass_name_at(cp_index);
+ return classname->as_utf8();
+JVM_END
+
+
+JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
+ JVMWrapper("JVM_GetCPFieldClassNameUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ switch (cp->tag_at(cp_index).value()) {
+ case JVM_CONSTANT_Fieldref: {
+ int class_index = cp->uncached_klass_ref_index_at(cp_index);
+ Symbol* classname = cp->klass_name_at(class_index);
+ return classname->as_utf8();
+ }
+ default:
+ fatal("JVM_GetCPFieldClassNameUTF: illegal constant");
+ }
+ ShouldNotReachHere();
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index))
+ JVMWrapper("JVM_GetCPMethodClassNameUTF");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ switch (cp->tag_at(cp_index).value()) {
+ case JVM_CONSTANT_Methodref:
+ case JVM_CONSTANT_InterfaceMethodref: {
+ int class_index = cp->uncached_klass_ref_index_at(cp_index);
+ Symbol* classname = cp->klass_name_at(class_index);
+ return classname->as_utf8();
+ }
+ default:
+ fatal("JVM_GetCPMethodClassNameUTF: illegal constant");
+ }
+ ShouldNotReachHere();
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls))
+ JVMWrapper("JVM_GetCPFieldModifiers");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants();
+ switch (cp->tag_at(cp_index).value()) {
+ case JVM_CONSTANT_Fieldref: {
+ Symbol* name = cp->uncached_name_ref_at(cp_index);
+ Symbol* signature = cp->uncached_signature_ref_at(cp_index);
+ InstanceKlass* ik = InstanceKlass::cast(k_called);
+ for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
+ if (fs.name() == name && fs.signature() == signature) {
+ return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS;
+ }
+ }
+ return -1;
+ }
+ default:
+ fatal("JVM_GetCPFieldModifiers: illegal constant");
+ }
+ ShouldNotReachHere();
+ return 0;
+JVM_END
+
+
+JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls))
+ JVMWrapper("JVM_GetCPMethodModifiers");
+ Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
+ Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls));
+ k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread);
+ k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread);
+ ConstantPool* cp = InstanceKlass::cast(k)->constants();
+ switch (cp->tag_at(cp_index).value()) {
+ case JVM_CONSTANT_Methodref:
+ case JVM_CONSTANT_InterfaceMethodref: {
+ Symbol* name = cp->uncached_name_ref_at(cp_index);
+ Symbol* signature = cp->uncached_signature_ref_at(cp_index);
+ Array<Method*>* methods = InstanceKlass::cast(k_called)->methods();
+ int methods_count = methods->length();
+ for (int i = 0; i < methods_count; i++) {
+ Method* method = methods->at(i);
+ if (method->name() == name && method->signature() == signature) {
+ return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
+ }
+ }
+ return -1;
+ }
+ default:
+ fatal("JVM_GetCPMethodModifiers: illegal constant");
+ }
+ ShouldNotReachHere();
+ return 0;
+JVM_END
+
+
+// Misc //////////////////////////////////////////////////////////////////////////////////////////////
+
+JVM_LEAF(void, JVM_ReleaseUTF(const char *utf))
+ // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything
+JVM_END
+
+
+JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2))
+ JVMWrapper("JVM_IsSameClassPackage");
+ oop class1_mirror = JNIHandles::resolve_non_null(class1);
+ oop class2_mirror = JNIHandles::resolve_non_null(class2);
+ Klass* klass1 = java_lang_Class::as_Klass(class1_mirror);
+ Klass* klass2 = java_lang_Class::as_Klass(class2_mirror);
+ return (jboolean) Reflection::is_same_class_package(klass1, klass2);
+JVM_END
+
+// Printing support //////////////////////////////////////////////////
+extern "C" {
+
+ATTRIBUTE_PRINTF(3, 0)
+int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) {
+ // see bug 4399518, 4417214
+ if ((intptr_t)count <= 0) return -1;
+
+ int result = vsnprintf(str, count, fmt, args);
+ // Note: on truncation vsnprintf(3) on Unix returns numbers of
+ // characters which would have been written had the buffer been large
+ // enough; on Windows, it returns -1. We handle both cases here and
+ // always return -1, and perform null termination.
+ if ((result > 0 && (size_t)result >= count) || result == -1) {
+ str[count - 1] = '\0';
+ result = -1;
+ }
+
+ return result;
+}
+
+ATTRIBUTE_PRINTF(3, 0)
+int jio_snprintf(char *str, size_t count, const char *fmt, ...) {
+ va_list args;
+ int len;
+ va_start(args, fmt);
+ len = jio_vsnprintf(str, count, fmt, args);
+ va_end(args);
+ return len;
+}
+
+ATTRIBUTE_PRINTF(2,3)
+int jio_fprintf(FILE* f, const char *fmt, ...) {
+ int len;
+ va_list args;
+ va_start(args, fmt);
+ len = jio_vfprintf(f, fmt, args);
+ va_end(args);
+ return len;
+}
+
+ATTRIBUTE_PRINTF(2, 0)
+int jio_vfprintf(FILE* f, const char *fmt, va_list args) {
+ if (Arguments::vfprintf_hook() != NULL) {
+ return Arguments::vfprintf_hook()(f, fmt, args);
+ } else {
+ return vfprintf(f, fmt, args);
+ }
+}
+
+ATTRIBUTE_PRINTF(1, 2)
+JNIEXPORT int jio_printf(const char *fmt, ...) {
+ int len;
+ va_list args;
+ va_start(args, fmt);
+ len = jio_vfprintf(defaultStream::output_stream(), fmt, args);
+ va_end(args);
+ return len;
+}
+
+
+// HotSpot specific jio method
+void jio_print(const char* s) {
+ // Try to make this function as atomic as possible.
+ if (Arguments::vfprintf_hook() != NULL) {
+ jio_fprintf(defaultStream::output_stream(), "%s", s);
+ } else {
+ // Make an unused local variable to avoid warning from gcc 4.x compiler.
+ size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s));
+ }
+}
+
+} // Extern C
+
+// java.lang.Thread //////////////////////////////////////////////////////////////////////////////
+
+// In most of the JVM Thread support functions we need to be sure to lock the Threads_lock
+// to prevent the target thread from exiting after we have a pointer to the C++ Thread or
+// OSThread objects. The exception to this rule is when the target object is the thread
+// doing the operation, in which case we know that the thread won't exit until the
+// operation is done (all exits being voluntary). There are a few cases where it is
+// rather silly to do operations on yourself, like resuming yourself or asking whether
+// you are alive. While these can still happen, they are not subject to deadlocks if
+// the lock is held while the operation occurs (this is not the case for suspend, for
+// instance), and are very unlikely. Because IsAlive needs to be fast and its
+// implementation is local to this file, we always lock Threads_lock for that one.
+
+static void thread_entry(JavaThread* thread, TRAPS) {
+ HandleMark hm(THREAD);
+ Handle obj(THREAD, thread->threadObj());
+ JavaValue result(T_VOID);
+ JavaCalls::call_virtual(&result,
+ obj,
+ SystemDictionary::Thread_klass(),
+ vmSymbols::run_method_name(),
+ vmSymbols::void_method_signature(),
+ THREAD);
+}
+
+
+JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread))
+ JVMWrapper("JVM_StartThread");
+ JavaThread *native_thread = NULL;
+
+ // We cannot hold the Threads_lock when we throw an exception,
+ // due to rank ordering issues. Example: we might need to grab the
+ // Heap_lock while we construct the exception.
+ bool throw_illegal_thread_state = false;
+
+ // We must release the Threads_lock before we can post a jvmti event
+ // in Thread::start.
+ {
+ // Ensure that the C++ Thread and OSThread structures aren't freed before
+ // we operate.
+ MutexLocker mu(Threads_lock);
+
+ // Since JDK 5 the java.lang.Thread threadStatus is used to prevent
+ // re-starting an already started thread, so we should usually find
+ // that the JavaThread is null. However for a JNI attached thread
+ // there is a small window between the Thread object being created
+ // (with its JavaThread set) and the update to its threadStatus, so we
+ // have to check for this
+ if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) {
+ throw_illegal_thread_state = true;
+ } else {
+ // We could also check the stillborn flag to see if this thread was already stopped, but
+ // for historical reasons we let the thread detect that itself when it starts running
+
+ jlong size =
+ java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread));
+ // Allocate the C++ Thread structure and create the native thread. The
+ // stack size retrieved from java is 64-bit signed, but the constructor takes
+ // size_t (an unsigned type), which may be 32 or 64-bit depending on the platform.
+ // - Avoid truncating on 32-bit platforms if size is greater than UINT_MAX.
+ // - Avoid passing negative values which would result in really large stacks.
+ NOT_LP64(if (size > SIZE_MAX) size = SIZE_MAX;)
+ size_t sz = size > 0 ? (size_t) size : 0;
+ native_thread = new JavaThread(&thread_entry, sz);
+
+ // At this point it may be possible that no osthread was created for the
+ // JavaThread due to lack of memory. Check for this situation and throw
+ // an exception if necessary. Eventually we may want to change this so
+ // that we only grab the lock if the thread was created successfully -
+ // then we can also do this check and throw the exception in the
+ // JavaThread constructor.
+ if (native_thread->osthread() != NULL) {
+ // Note: the current thread is not being used within "prepare".
+ native_thread->prepare(jthread);
+ }
+ }
+ }
+
+ if (throw_illegal_thread_state) {
+ THROW(vmSymbols::java_lang_IllegalThreadStateException());
+ }
+
+ assert(native_thread != NULL, "Starting null thread?");
+
+ if (native_thread->osthread() == NULL) {
+ // No one should hold a reference to the 'native_thread'.
+ delete native_thread;
+ if (JvmtiExport::should_post_resource_exhausted()) {
+ JvmtiExport::post_resource_exhausted(
+ JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS,
+ os::native_thread_creation_failed_msg());
+ }
+ THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(),
+ os::native_thread_creation_failed_msg());
+ }
+
+ Thread::start(native_thread);
+
+JVM_END
+
+// JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints
+// before the quasi-asynchronous exception is delivered. This is a little obtrusive,
+// but is thought to be reliable and simple. In the case, where the receiver is the
+// same thread as the sender, no safepoint is needed.
+JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable))
+ JVMWrapper("JVM_StopThread");
+
+ oop java_throwable = JNIHandles::resolve(throwable);
+ if (java_throwable == NULL) {
+ THROW(vmSymbols::java_lang_NullPointerException());
+ }
+ oop java_thread = JNIHandles::resolve_non_null(jthread);
+ JavaThread* receiver = java_lang_Thread::thread(java_thread);
+ Events::log_exception(JavaThread::current(),
+ "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]",
+ p2i(receiver), p2i((address)java_thread), p2i(throwable));
+ // First check if thread is alive
+ if (receiver != NULL) {
+ // Check if exception is getting thrown at self (use oop equality, since the
+ // target object might exit)
+ if (java_thread == thread->threadObj()) {
+ THROW_OOP(java_throwable);
+ } else {
+ // Enques a VM_Operation to stop all threads and then deliver the exception...
+ Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable));
+ }
+ }
+ else {
+ // Either:
+ // - target thread has not been started before being stopped, or
+ // - target thread already terminated
+ // We could read the threadStatus to determine which case it is
+ // but that is overkill as it doesn't matter. We must set the
+ // stillborn flag for the first case, and if the thread has already
+ // exited setting this flag has no affect
+ java_lang_Thread::set_stillborn(java_thread);
+ }
+JVM_END
+
+
+JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread))
+ JVMWrapper("JVM_IsThreadAlive");
+
+ oop thread_oop = JNIHandles::resolve_non_null(jthread);
+ return java_lang_Thread::is_alive(thread_oop);
+JVM_END
+
+
+JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread))
+ JVMWrapper("JVM_SuspendThread");
+ oop java_thread = JNIHandles::resolve_non_null(jthread);
+ JavaThread* receiver = java_lang_Thread::thread(java_thread);
+
+ if (receiver != NULL) {
+ // thread has run and has not exited (still on threads list)
+
+ {
+ MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag);
+ if (receiver->is_external_suspend()) {
+ // Don't allow nested external suspend requests. We can't return
+ // an error from this interface so just ignore the problem.
+ return;
+ }
+ if (receiver->is_exiting()) { // thread is in the process of exiting
+ return;
+ }
+ receiver->set_external_suspend();
+ }
+
+ // java_suspend() will catch threads in the process of exiting
+ // and will ignore them.
+ receiver->java_suspend();
+
+ // It would be nice to have the following assertion in all the
+ // time, but it is possible for a racing resume request to have
+ // resumed this thread right after we suspended it. Temporarily
+ // enable this assertion if you are chasing a different kind of
+ // bug.
+ //
+ // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL ||
+ // receiver->is_being_ext_suspended(), "thread is not suspended");
+ }
+JVM_END
+
+
+JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread))
+ JVMWrapper("JVM_ResumeThread");
+ // Ensure that the C++ Thread and OSThread structures aren't freed before we operate.
+ // We need to *always* get the threads lock here, since this operation cannot be allowed during
+ // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other
+ // threads randomly resumes threads, then a thread might not be suspended when the safepoint code
+ // looks at it.
+ MutexLocker ml(Threads_lock);
+ JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread));
+ if (thr != NULL) {
+ // the thread has run and is not in the process of exiting
+ thr->java_resume();
+ }
+JVM_END
+
+
+JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio))
+ JVMWrapper("JVM_SetThreadPriority");
+ // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
+ MutexLocker ml(Threads_lock);
+ oop java_thread = JNIHandles::resolve_non_null(jthread);
+ java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio);
+ JavaThread* thr = java_lang_Thread::thread(java_thread);
+ if (thr != NULL) { // Thread not yet started; priority pushed down when it is
+ Thread::set_priority(thr, (ThreadPriority)prio);
+ }
+JVM_END
+
+
+JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass))
+ JVMWrapper("JVM_Yield");
+ if (os::dont_yield()) return;
+ HOTSPOT_THREAD_YIELD();
+ os::naked_yield();
+JVM_END
+
+
+JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis))
+ JVMWrapper("JVM_Sleep");
+
+ if (millis < 0) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative");
+ }
+
+ if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) {
+ THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted");
+ }
+
+ // Save current thread state and restore it at the end of this block.
+ // And set new thread state to SLEEPING.
+ JavaThreadSleepState jtss(thread);
+
+ HOTSPOT_THREAD_SLEEP_BEGIN(millis);
+
+ EventThreadSleep event;
+
+ if (millis == 0) {
+ os::naked_yield();
+ } else {
+ ThreadState old_state = thread->osthread()->get_state();
+ thread->osthread()->set_state(SLEEPING);
+ if (os::sleep(thread, millis, true) == OS_INTRPT) {
+ // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on
+ // us while we were sleeping. We do not overwrite those.
+ if (!HAS_PENDING_EXCEPTION) {
+ if (event.should_commit()) {
+ event.set_time(millis);
+ event.commit();
+ }
+ HOTSPOT_THREAD_SLEEP_END(1);
+
+ // TODO-FIXME: THROW_MSG returns which means we will not call set_state()
+ // to properly restore the thread state. That's likely wrong.
+ THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted");
+ }
+ }
+ thread->osthread()->set_state(old_state);
+ }
+ if (event.should_commit()) {
+ event.set_time(millis);
+ event.commit();
+ }
+ HOTSPOT_THREAD_SLEEP_END(0);
+JVM_END
+
+JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass))
+ JVMWrapper("JVM_CurrentThread");
+ oop jthread = thread->threadObj();
+ assert (thread != NULL, "no current thread!");
+ return JNIHandles::make_local(env, jthread);
+JVM_END
+
+
+JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread))
+ JVMWrapper("JVM_CountStackFrames");
+
+ // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
+ oop java_thread = JNIHandles::resolve_non_null(jthread);
+ bool throw_illegal_thread_state = false;
+ int count = 0;
+
+ {
+ MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock);
+ // We need to re-resolve the java_thread, since a GC might have happened during the
+ // acquire of the lock
+ JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread));
+
+ if (thr == NULL) {
+ // do nothing
+ } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) {
+ // Check whether this java thread has been suspended already. If not, throws
+ // IllegalThreadStateException. We defer to throw that exception until
+ // Threads_lock is released since loading exception class has to leave VM.
+ // The correct way to test a thread is actually suspended is
+ // wait_for_ext_suspend_completion(), but we can't call that while holding
+ // the Threads_lock. The above tests are sufficient for our purposes
+ // provided the walkability of the stack is stable - which it isn't
+ // 100% but close enough for most practical purposes.
+ throw_illegal_thread_state = true;
+ } else {
+ // Count all java activation, i.e., number of vframes
+ for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) {
+ // Native frames are not counted
+ if (!vfst.method()->is_native()) count++;
+ }
+ }
+ }
+
+ if (throw_illegal_thread_state) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(),
+ "this thread is not suspended");
+ }
+ return count;
+JVM_END
+
+// Consider: A better way to implement JVM_Interrupt() is to acquire
+// Threads_lock to resolve the jthread into a Thread pointer, fetch
+// Thread->platformevent, Thread->native_thr, Thread->parker, etc.,
+// drop Threads_lock, and the perform the unpark() and thr_kill() operations
+// outside the critical section. Threads_lock is hot so we want to minimize
+// the hold-time. A cleaner interface would be to decompose interrupt into
+// two steps. The 1st phase, performed under Threads_lock, would return
+// a closure that'd be invoked after Threads_lock was dropped.
+// This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and
+// admit spurious wakeups.
+
+JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread))
+ JVMWrapper("JVM_Interrupt");
+
+ // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
+ oop java_thread = JNIHandles::resolve_non_null(jthread);
+ MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock);
+ // We need to re-resolve the java_thread, since a GC might have happened during the
+ // acquire of the lock
+ JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread));
+ if (thr != NULL) {
+ Thread::interrupt(thr);
+ }
+JVM_END
+
+
+JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted))
+ JVMWrapper("JVM_IsInterrupted");
+
+ // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
+ oop java_thread = JNIHandles::resolve_non_null(jthread);
+ MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock);
+ // We need to re-resolve the java_thread, since a GC might have happened during the
+ // acquire of the lock
+ JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread));
+ if (thr == NULL) {
+ return JNI_FALSE;
+ } else {
+ return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0);
+ }
+JVM_END
+
+
+// Return true iff the current thread has locked the object passed in
+
+JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj))
+ JVMWrapper("JVM_HoldsLock");
+ assert(THREAD->is_Java_thread(), "sanity check");
+ if (obj == NULL) {
+ THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE);
+ }
+ Handle h_obj(THREAD, JNIHandles::resolve(obj));
+ return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj);
+JVM_END
+
+
+JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass))
+ JVMWrapper("JVM_DumpAllStacks");
+ VM_PrintThreads op;
+ VMThread::execute(&op);
+ if (JvmtiExport::should_post_data_dump()) {
+ JvmtiExport::post_data_dump();
+ }
+JVM_END
+
+JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name))
+ JVMWrapper("JVM_SetNativeThreadName");
+ ResourceMark rm(THREAD);
+ oop java_thread = JNIHandles::resolve_non_null(jthread);
+ JavaThread* thr = java_lang_Thread::thread(java_thread);
+ // Thread naming only supported for the current thread, doesn't work for
+ // target threads.
+ if (Thread::current() == thr && !thr->has_attached_via_jni()) {
+ // we don't set the name of an attached thread to avoid stepping
+ // on other programs
+ const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
+ os::set_native_thread_name(thread_name);
+ }
+JVM_END
+
+// java.lang.SecurityManager ///////////////////////////////////////////////////////////////////////
+
+static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) {
+ assert(jthread->is_Java_thread(), "must be a Java thread");
+ if (jthread->privileged_stack_top() == NULL) return false;
+ if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) {
+ oop loader = jthread->privileged_stack_top()->class_loader();
+ if (loader == NULL) return true;
+ bool trusted = java_lang_ClassLoader::is_trusted_loader(loader);
+ if (trusted) return true;
+ }
+ return false;
+}
+
+JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env))
+ JVMWrapper("JVM_CurrentLoadedClass");
+ ResourceMark rm(THREAD);
+
+ for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
+ // if a method in a class in a trusted loader is in a doPrivileged, return NULL
+ bool trusted = is_trusted_frame(thread, &vfst);
+ if (trusted) return NULL;
+
+ Method* m = vfst.method();
+ if (!m->is_native()) {
+ InstanceKlass* holder = m->method_holder();
+ oop loader = holder->class_loader();
+ if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) {
+ return (jclass) JNIHandles::make_local(env, holder->java_mirror());
+ }
+ }
+ }
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env))
+ JVMWrapper("JVM_CurrentClassLoader");
+ ResourceMark rm(THREAD);
+
+ for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
+
+ // if a method in a class in a trusted loader is in a doPrivileged, return NULL
+ bool trusted = is_trusted_frame(thread, &vfst);
+ if (trusted) return NULL;
+
+ Method* m = vfst.method();
+ if (!m->is_native()) {
+ InstanceKlass* holder = m->method_holder();
+ assert(holder->is_klass(), "just checking");
+ oop loader = holder->class_loader();
+ if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) {
+ return JNIHandles::make_local(env, loader);
+ }
+ }
+ }
+ return NULL;
+JVM_END
+
+
+JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env))
+ JVMWrapper("JVM_GetClassContext");
+ ResourceMark rm(THREAD);
+ JvmtiVMObjectAllocEventCollector oam;
+ vframeStream vfst(thread);
+
+ if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) {
+ // This must only be called from SecurityManager.getClassContext
+ Method* m = vfst.method();
+ if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() &&
+ m->name() == vmSymbols::getClassContext_name() &&
+ m->signature() == vmSymbols::void_class_array_signature())) {
+ THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext");
+ }
+ }
+
+ // Collect method holders
+ GrowableArray<Klass*>* klass_array = new GrowableArray<Klass*>();
+ for (; !vfst.at_end(); vfst.security_next()) {
+ Method* m = vfst.method();
+ // Native frames are not returned
+ if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) {
+ Klass* holder = m->method_holder();
+ assert(holder->is_klass(), "just checking");
+ klass_array->append(holder);
+ }
+ }
+
+ // Create result array of type [Ljava/lang/Class;
+ objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL);
+ // Fill in mirrors corresponding to method holders
+ for (int i = 0; i < klass_array->length(); i++) {
+ result->obj_at_put(i, klass_array->at(i)->java_mirror());
+ }
+
+ return (jobjectArray) JNIHandles::make_local(env, result);
+JVM_END
+
+
+JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name))
+ JVMWrapper("JVM_ClassDepth");
+ ResourceMark rm(THREAD);
+ Handle h_name (THREAD, JNIHandles::resolve_non_null(name));
+ Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0);
+
+ const char* str = java_lang_String::as_utf8_string(class_name_str());
+ TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str));
+ if (class_name_sym == NULL) {
+ return -1;
+ }
+
+ int depth = 0;
+
+ for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
+ if (!vfst.method()->is_native()) {
+ InstanceKlass* holder = vfst.method()->method_holder();
+ assert(holder->is_klass(), "just checking");
+ if (holder->name() == class_name_sym) {
+ return depth;
+ }
+ depth++;
+ }
+ }
+ return -1;
+JVM_END
+
+
+JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env))
+ JVMWrapper("JVM_ClassLoaderDepth");
+ ResourceMark rm(THREAD);
+ int depth = 0;
+ for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
+ // if a method in a class in a trusted loader is in a doPrivileged, return -1
+ bool trusted = is_trusted_frame(thread, &vfst);
+ if (trusted) return -1;
+
+ Method* m = vfst.method();
+ if (!m->is_native()) {
+ InstanceKlass* holder = m->method_holder();
+ assert(holder->is_klass(), "just checking");
+ oop loader = holder->class_loader();
+ if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) {
+ return depth;
+ }
+ depth++;
+ }
+ }
+ return -1;
+JVM_END
+
+
+// java.lang.Package ////////////////////////////////////////////////////////////////
+
+
+JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name))
+ JVMWrapper("JVM_GetSystemPackage");
+ ResourceMark rm(THREAD);
+ JvmtiVMObjectAllocEventCollector oam;
+ char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
+ oop result = ClassLoader::get_system_package(str, CHECK_NULL);
+ return (jstring) JNIHandles::make_local(result);
+JVM_END
+
+
+JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env))
+ JVMWrapper("JVM_GetSystemPackages");
+ JvmtiVMObjectAllocEventCollector oam;
+ objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL);
+ return (jobjectArray) JNIHandles::make_local(result);
+JVM_END
+
+
+// java.lang.ref.Reference ///////////////////////////////////////////////////////////////
+
+
+JVM_ENTRY(jobject, JVM_GetAndClearReferencePendingList(JNIEnv* env))
+ JVMWrapper("JVM_GetAndClearReferencePendingList");
+
+ MonitorLockerEx ml(Heap_lock);
+ oop ref = Universe::reference_pending_list();
+ if (ref != NULL) {
+ Universe::set_reference_pending_list(NULL);
+ }
+ return JNIHandles::make_local(env, ref);
+JVM_END
+
+JVM_ENTRY(jboolean, JVM_HasReferencePendingList(JNIEnv* env))
+ JVMWrapper("JVM_HasReferencePendingList");
+ MonitorLockerEx ml(Heap_lock);
+ return Universe::has_reference_pending_list();
+JVM_END
+
+JVM_ENTRY(void, JVM_WaitForReferencePendingList(JNIEnv* env))
+ JVMWrapper("JVM_WaitForReferencePendingList");
+ MonitorLockerEx ml(Heap_lock);
+ while (!Universe::has_reference_pending_list()) {
+ ml.wait();
+ }
+JVM_END
+
+
+// ObjectInputStream ///////////////////////////////////////////////////////////////
+
+bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) {
+ if (current_class == NULL) {
+ return true;
+ }
+ if ((current_class == field_class) || access.is_public()) {
+ return true;
+ }
+
+ if (access.is_protected()) {
+ // See if current_class is a subclass of field_class
+ if (current_class->is_subclass_of(field_class)) {
+ return true;
+ }
+ }
+
+ return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class));
+}
+
+// Return the first user-defined class loader up the execution stack, or null
+// if only code from the bootstrap or platform class loader is on the stack.
+
+JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env))
+ for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) {
+ vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection
+ oop loader = vfst.method()->method_holder()->class_loader();
+ if (loader != NULL && !SystemDictionary::is_platform_class_loader(loader)) {
+ return JNIHandles::make_local(env, loader);
+ }
+ }
+ return NULL;
+JVM_END
+
+
+// Array ///////////////////////////////////////////////////////////////////////////////////////////
+
+
+// resolve array handle and check arguments
+static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) {
+ if (arr == NULL) {
+ THROW_0(vmSymbols::java_lang_NullPointerException());
+ }
+ oop a = JNIHandles::resolve_non_null(arr);
+ if (!a->is_array()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array");
+ } else if (type_array_only && !a->is_typeArray()) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array of primitive type");
+ }
+ return arrayOop(a);
+}
+
+
+JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr))
+ JVMWrapper("JVM_GetArrayLength");
+ arrayOop a = check_array(env, arr, false, CHECK_0);
+ return a->length();
+JVM_END
+
+
+JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index))
+ JVMWrapper("JVM_Array_Get");
+ JvmtiVMObjectAllocEventCollector oam;
+ arrayOop a = check_array(env, arr, false, CHECK_NULL);
+ jvalue value;
+ BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL);
+ oop box = Reflection::box(&value, type, CHECK_NULL);
+ return JNIHandles::make_local(env, box);
+JVM_END
+
+
+JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode))
+ JVMWrapper("JVM_GetPrimitiveArrayElement");
+ jvalue value;
+ value.i = 0; // to initialize value before getting used in CHECK
+ arrayOop a = check_array(env, arr, true, CHECK_(value));
+ assert(a->is_typeArray(), "just checking");
+ BasicType type = Reflection::array_get(&value, a, index, CHECK_(value));
+ BasicType wide_type = (BasicType) wCode;
+ if (type != wide_type) {
+ Reflection::widen(&value, type, wide_type, CHECK_(value));
+ }
+ return value;
+JVM_END
+
+
+JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val))
+ JVMWrapper("JVM_SetArrayElement");
+ arrayOop a = check_array(env, arr, false, CHECK);
+ oop box = JNIHandles::resolve(val);
+ jvalue value;
+ value.i = 0; // to initialize value before getting used in CHECK
+ BasicType value_type;
+ if (a->is_objArray()) {
+ // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array
+ value_type = Reflection::unbox_for_regular_object(box, &value);
+ } else {
+ value_type = Reflection::unbox_for_primitive(box, &value, CHECK);
+ }
+ Reflection::array_set(&value, a, index, value_type, CHECK);
+JVM_END
+
+
+JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode))
+ JVMWrapper("JVM_SetPrimitiveArrayElement");
+ arrayOop a = check_array(env, arr, true, CHECK);
+ assert(a->is_typeArray(), "just checking");
+ BasicType value_type = (BasicType) vCode;
+ Reflection::array_set(&v, a, index, value_type, CHECK);
+JVM_END
+
+
+JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length))
+ JVMWrapper("JVM_NewArray");
+ JvmtiVMObjectAllocEventCollector oam;
+ oop element_mirror = JNIHandles::resolve(eltClass);
+ oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL);
+ return JNIHandles::make_local(env, result);
+JVM_END
+
+
+JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim))
+ JVMWrapper("JVM_NewMultiArray");
+ JvmtiVMObjectAllocEventCollector oam;
+ arrayOop dim_array = check_array(env, dim, true, CHECK_NULL);
+ oop element_mirror = JNIHandles::resolve(eltClass);
+ assert(dim_array->is_typeArray(), "just checking");
+ oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL);
+ return JNIHandles::make_local(env, result);
+JVM_END
+
+
+// Library support ///////////////////////////////////////////////////////////////////////////
+
+JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name))
+ //%note jvm_ct
+ JVMWrapper("JVM_LoadLibrary");
+ char ebuf[1024];
+ void *load_result;
+ {
+ ThreadToNativeFromVM ttnfvm(thread);
+ load_result = os::dll_load(name, ebuf, sizeof ebuf);
+ }
+ if (load_result == NULL) {
+ char msg[1024];
+ jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf);
+ // Since 'ebuf' may contain a string encoded using
+ // platform encoding scheme, we need to pass
+ // Exceptions::unsafe_to_utf8 to the new_exception method
+ // as the last argument. See bug 6367357.
+ Handle h_exception =
+ Exceptions::new_exception(thread,
+ vmSymbols::java_lang_UnsatisfiedLinkError(),
+ msg, Exceptions::unsafe_to_utf8);
+
+ THROW_HANDLE_0(h_exception);
+ }
+ return load_result;
+JVM_END
+
+
+JVM_LEAF(void, JVM_UnloadLibrary(void* handle))
+ JVMWrapper("JVM_UnloadLibrary");
+ os::dll_unload(handle);
+JVM_END
+
+
+JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name))
+ JVMWrapper("JVM_FindLibraryEntry");
+ return os::dll_lookup(handle, name);
+JVM_END
+
+
+// JNI version ///////////////////////////////////////////////////////////////////////////////
+
+JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version))
+ JVMWrapper("JVM_IsSupportedJNIVersion");
+ return Threads::is_supported_jni_version_including_1_1(version);
+JVM_END
+
+
+// String support ///////////////////////////////////////////////////////////////////////////
+
+JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str))
+ JVMWrapper("JVM_InternString");
+ JvmtiVMObjectAllocEventCollector oam;
+ if (str == NULL) return NULL;
+ oop string = JNIHandles::resolve_non_null(str);
+ oop result = StringTable::intern(string, CHECK_NULL);
+ return (jstring) JNIHandles::make_local(env, result);
+JVM_END
+
+
+// Raw monitor support //////////////////////////////////////////////////////////////////////
+
+// The lock routine below calls lock_without_safepoint_check in order to get a raw lock
+// without interfering with the safepoint mechanism. The routines are not JVM_LEAF because
+// they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check
+// that only works with java threads.
+
+
+JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) {
+ VM_Exit::block_if_vm_exited();
+ JVMWrapper("JVM_RawMonitorCreate");
+ return new Mutex(Mutex::native, "JVM_RawMonitorCreate");
+}
+
+
+JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) {
+ VM_Exit::block_if_vm_exited();
+ JVMWrapper("JVM_RawMonitorDestroy");
+ delete ((Mutex*) mon);
+}
+
+
+JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) {
+ VM_Exit::block_if_vm_exited();
+ JVMWrapper("JVM_RawMonitorEnter");
+ ((Mutex*) mon)->jvm_raw_lock();
+ return 0;
+}
+
+
+JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) {
+ VM_Exit::block_if_vm_exited();
+ JVMWrapper("JVM_RawMonitorExit");
+ ((Mutex*) mon)->jvm_raw_unlock();
+}
+
+
+// Shared JNI/JVM entry points //////////////////////////////////////////////////////////////
+
+jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init,
+ Handle loader, Handle protection_domain,
+ jboolean throwError, TRAPS) {
+ // Security Note:
+ // The Java level wrapper will perform the necessary security check allowing
+ // us to pass the NULL as the initiating class loader. The VM is responsible for
+ // the checkPackageAccess relative to the initiating class loader via the
+ // protection_domain. The protection_domain is passed as NULL by the java code
+ // if there is no security manager in 3-arg Class.forName().
+ Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL);
+
+ // Check if we should initialize the class
+ if (init && klass->is_instance_klass()) {
+ klass->initialize(CHECK_NULL);
+ }
+ return (jclass) JNIHandles::make_local(env, klass->java_mirror());
+}
+
+
+// Method ///////////////////////////////////////////////////////////////////////////////////////////
+
+JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0))
+ JVMWrapper("JVM_InvokeMethod");
+ Handle method_handle;
+ if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) {
+ method_handle = Handle(THREAD, JNIHandles::resolve(method));
+ Handle receiver(THREAD, JNIHandles::resolve(obj));
+ objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0)));
+ oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL);
+ jobject res = JNIHandles::make_local(env, result);
+ if (JvmtiExport::should_post_vm_object_alloc()) {
+ oop ret_type = java_lang_reflect_Method::return_type(method_handle());
+ assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!");
+ if (java_lang_Class::is_primitive(ret_type)) {
+ // Only for primitive type vm allocates memory for java object.
+ // See box() method.
+ JvmtiExport::post_vm_object_alloc(JavaThread::current(), result);
+ }
+ }
+ return res;
+ } else {
+ THROW_0(vmSymbols::java_lang_StackOverflowError());
+ }
+JVM_END
+
+
+JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0))
+ JVMWrapper("JVM_NewInstanceFromConstructor");
+ oop constructor_mirror = JNIHandles::resolve(c);
+ objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0)));
+ oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL);
+ jobject res = JNIHandles::make_local(env, result);
+ if (JvmtiExport::should_post_vm_object_alloc()) {
+ JvmtiExport::post_vm_object_alloc(JavaThread::current(), result);
+ }
+ return res;
+JVM_END
+
+// Atomic ///////////////////////////////////////////////////////////////////////////////////////////
+
+JVM_LEAF(jboolean, JVM_SupportsCX8())
+ JVMWrapper("JVM_SupportsCX8");
+ return VM_Version::supports_cx8();
+JVM_END
+
+// Returns an array of all live Thread objects (VM internal JavaThreads,
+// jvmti agent threads, and JNI attaching threads are skipped)
+// See CR 6404306 regarding JNI attaching threads
+JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy))
+ ResourceMark rm(THREAD);
+ ThreadsListEnumerator tle(THREAD, false, false);
+ JvmtiVMObjectAllocEventCollector oam;
+
+ int num_threads = tle.num_threads();
+ objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL);
+ objArrayHandle threads_ah(THREAD, r);
+
+ for (int i = 0; i < num_threads; i++) {
+ Handle h = tle.get_threadObj(i);
+ threads_ah->obj_at_put(i, h());
+ }
+
+ return (jobjectArray) JNIHandles::make_local(env, threads_ah());
+JVM_END
+
+
+// Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods
+// Return StackTraceElement[][], each element is the stack trace of a thread in
+// the corresponding entry in the given threads array
+JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads))
+ JVMWrapper("JVM_DumpThreads");
+ JvmtiVMObjectAllocEventCollector oam;
+
+ // Check if threads is null
+ if (threads == NULL) {
+ THROW_(vmSymbols::java_lang_NullPointerException(), 0);
+ }
+
+ objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads));
+ objArrayHandle ah(THREAD, a);
+ int num_threads = ah->length();
+ // check if threads is non-empty array
+ if (num_threads == 0) {
+ THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0);
+ }
+
+ // check if threads is not an array of objects of Thread class
+ Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass();
+ if (k != SystemDictionary::Thread_klass()) {
+ THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0);
+ }
+
+ ResourceMark rm(THREAD);
+
+ GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads);
+ for (int i = 0; i < num_threads; i++) {
+ oop thread_obj = ah->obj_at(i);
+ instanceHandle h(THREAD, (instanceOop) thread_obj);
+ thread_handle_array->append(h);
+ }
+
+ Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL);
+ return (jobjectArray)JNIHandles::make_local(env, stacktraces());
+
+JVM_END
+
+// JVM monitoring and management support
+JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version))
+ return Management::get_jmm_interface(version);
+JVM_END
+
+// com.sun.tools.attach.VirtualMachine agent properties support
+//
+// Initialize the agent properties with the properties maintained in the VM
+JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties))
+ JVMWrapper("JVM_InitAgentProperties");
+ ResourceMark rm;
+
+ Handle props(THREAD, JNIHandles::resolve_non_null(properties));
+
+ PUTPROP(props, "sun.java.command", Arguments::java_command());
+ PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags());
+ PUTPROP(props, "sun.jvm.args", Arguments::jvm_args());
+ return properties;
+JVM_END
+
+JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass))
+{
+ JVMWrapper("JVM_GetEnclosingMethodInfo");
+ JvmtiVMObjectAllocEventCollector oam;
+
+ if (ofClass == NULL) {
+ return NULL;
+ }
+ Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass));
+ // Special handling for primitive objects
+ if (java_lang_Class::is_primitive(mirror())) {
+ return NULL;
+ }
+ Klass* k = java_lang_Class::as_Klass(mirror());
+ if (!k->is_instance_klass()) {
+ return NULL;
+ }
+ InstanceKlass* ik = InstanceKlass::cast(k);
+ int encl_method_class_idx = ik->enclosing_method_class_index();
+ if (encl_method_class_idx == 0) {
+ return NULL;
+ }
+ objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL);
+ objArrayHandle dest(THREAD, dest_o);
+ Klass* enc_k = ik->constants()->klass_at(encl_method_class_idx, CHECK_NULL);
+ dest->obj_at_put(0, enc_k->java_mirror());
+ int encl_method_method_idx = ik->enclosing_method_method_index();
+ if (encl_method_method_idx != 0) {
+ Symbol* sym = ik->constants()->symbol_at(
+ extract_low_short_from_int(
+ ik->constants()->name_and_type_at(encl_method_method_idx)));
+ Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
+ dest->obj_at_put(1, str());
+ sym = ik->constants()->symbol_at(
+ extract_high_short_from_int(
+ ik->constants()->name_and_type_at(encl_method_method_idx)));
+ str = java_lang_String::create_from_symbol(sym, CHECK_NULL);
+ dest->obj_at_put(2, str());
+ }
+ return (jobjectArray) JNIHandles::make_local(dest());
+}
+JVM_END
+
+JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size))
+{
+ memset(info, 0, info_size);
+
+ info->jvm_version = Abstract_VM_Version::jvm_version();
+ info->patch_version = Abstract_VM_Version::vm_patch_version();
+
+ // when we add a new capability in the jvm_version_info struct, we should also
+ // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat
+ // counter defined in runtimeService.cpp.
+ info->is_attachable = AttachListener::is_attach_supported();
+}
+JVM_END
+
+// Returns an array of java.lang.String objects containing the input arguments to the VM.
+JVM_ENTRY(jobjectArray, JVM_GetVmArguments(JNIEnv *env))
+ ResourceMark rm(THREAD);
+
+ if (Arguments::num_jvm_args() == 0 && Arguments::num_jvm_flags() == 0) {
+ return NULL;
+ }
+
+ char** vm_flags = Arguments::jvm_flags_array();
+ char** vm_args = Arguments::jvm_args_array();
+ int num_flags = Arguments::num_jvm_flags();
+ int num_args = Arguments::num_jvm_args();
+
+ InstanceKlass* ik = SystemDictionary::String_klass();
+ objArrayOop r = oopFactory::new_objArray(ik, num_args + num_flags, CHECK_NULL);
+ objArrayHandle result_h(THREAD, r);
+
+ int index = 0;
+ for (int j = 0; j < num_flags; j++, index++) {
+ Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL);
+ result_h->obj_at_put(index, h());
+ }
+ for (int i = 0; i < num_args; i++, index++) {
+ Handle h = java_lang_String::create_from_platform_dependent_str(vm_args[i], CHECK_NULL);
+ result_h->obj_at_put(index, h());
+ }
+ return (jobjectArray) JNIHandles::make_local(env, result_h());
+JVM_END
+
+JVM_ENTRY_NO_ENV(jint, JVM_FindSignal(const char *name))
+ return os::get_signal_number(name);
+JVM_END