diff -r fd16c54261b3 -r 489c9b5090e2 hotspot/src/share/vm/prims/jvm.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hotspot/src/share/vm/prims/jvm.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,4498 @@ +/* + * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_jvm.cpp.incl" +#include + +/* + 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 { + 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(klassOop to_class, TRAPS) { + ResourceMark rm; + int line_number = -1; + const char * source_file = NULL; + klassOop 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 + symbolHandle access_controller = oopFactory::new_symbol_handle("java/security/AccessController", CHECK); + klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); + symbolHandle privileged_action = oopFactory::new_symbol_handle("java/security/PrivilegedAction", CHECK); + klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); + + methodOop last_caller = NULL; + + while (!vfst.at_end()) { + methodOop m = vfst.method(); + if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::classloader_klass())&& + !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && + !vfst.method()->method_holder()->klass_part()->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() && + instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && + vfst.method()->name() == vmSymbols::forName0_name()) { + vfst.next(); + if (!vfst.at_end() && + instanceKlass::cast(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 && + instanceKlass::cast(last_caller->method_holder())->name() == + vmSymbols::java_lang_ClassLoader() && + (last_caller->name() == vmSymbols::loadClassInternal_name() || + last_caller->name() == vmSymbols::loadClass_name())) { + 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()); + symbolOop s = instanceKlass::cast(vfst.method()->method_holder())->source_file_name(); + if (s != NULL) { + source_file = s->as_C_string(); + } + } + } + if (caller != NULL) { + if (to_class != caller) { + const char * from = Klass::cast(caller)->external_name(); + const char * to = Klass::cast(to_class)->external_name(); + // print in a single call to reduce interleaving between threads + if (source_file != NULL) { + tty->print("RESOLVE %s %s %s:%d (explicit)\n", from, to, source_file, line_number); + } else { + tty->print("RESOLVE %s %s (explicit)\n", from, to); + } + } + } +} + +static void trace_class_resolution(klassOop 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 + class JVMTraceWrapper : public StackObj { + public: + JVMTraceWrapper(const char* format, ...) { + if (TraceJVMCalls) { + va_list ap; + va_start(ap, format); + tty->print("JVM "); + tty->vprint_cr(format, ap); + va_end(ap); + } + } + }; + + 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(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) + #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) + #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) + #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) +#else + #define JVMWrapper(arg1) + #define JVMWrapper2(arg1, arg2) + #define JVMWrapper3(arg1, arg2, arg3) + #define JVMWrapper4(arg1, arg2, arg3, arg4) +#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 + + +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(s->is_oop(), "JVM_ArrayCopy: src not an oop"); + assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); + // Do copy + Klass::cast(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, + KlassHandle(THREAD, SystemDictionary::properties_klass()), + vmSymbolHandles::put_name(), + vmSymbolHandles::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. + { + char as_chars[256]; + jio_snprintf(as_chars, sizeof(as_chars), INTX_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"; +#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 + + +// java.lang.Runtime ///////////////////////////////////////////////////////////////////////// + +extern volatile jint vm_created; + +JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) + if (vm_created != 0 && (code == 0)) { + // The VM is about to exit. We call back into Java to check whether finalizers should be run + Universe::run_finalizers_on_exit(); + } + before_exit(thread); + vm_exit(code); +JVM_END + + +JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) + before_exit(thread); + vm_exit(code); +JVM_END + + +JVM_LEAF(void, JVM_OnExit(void (*func)(void))) + register_on_exit_function(func); +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 + + +JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) + if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); +JVM_END + + +JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) + if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); +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 = 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 + + +JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) + JVMWrapper("JVM_PrintStackTrace"); + // Note: This is no longer used in Merlin, but we still support it for compatibility. + oop exception = JNIHandles::resolve_non_null(receiver); + oop stream = JNIHandles::resolve_non_null(printable); + java_lang_Throwable::print_stack_trace(exception, stream); +JVM_END + + +JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) + JVMWrapper("JVM_GetStackTraceDepth"); + oop exception = JNIHandles::resolve(throwable); + return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); +JVM_END + + +JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) + JVMWrapper("JVM_GetStackTraceElement"); + JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC + oop exception = JNIHandles::resolve(throwable); + oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); + return JNIHandles::make_local(env, element); +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)); + assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); + JavaThreadInObjectWaitState jtiows(thread, ms != 0); + if (JvmtiExport::should_post_monitor_wait()) { + JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); + } + 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)); + assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); + 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)); + assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); + 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)); + const KlassHandle klass (THREAD, obj->klass()); + JvmtiVMObjectAllocEventCollector oam; + +#ifdef ASSERT + // Just checking that the cloneable flag is set correct + if (obj->is_javaArray()) { + 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 = NULL; + if (obj->is_javaArray()) { + const int length = ((arrayOop)obj())->length(); + new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); + } else { + new_obj = 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, + (size_t)align_object_size(size) / HeapWordsPerLong); + // Clear the header + new_obj->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, size)); + + // 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 = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); + } + + return JNIHandles::make_local(env, oop(new_obj)); +JVM_END + +// java.lang.Compiler //////////////////////////////////////////////////// + +// The initial cuts of the HotSpot VM will not support JITs, and all existing +// JITs would need extensive changes to work with HotSpot. The JIT-related JVM +// functions are all silently ignored unless JVM warnings are printed. + +JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) + if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); +JVM_END + + +JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) + if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); + return JNI_FALSE; +JVM_END + + +JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) + if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); + return JNI_FALSE; +JVM_END + + +JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) + if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); + return JNI_FALSE; +JVM_END + + +JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) + if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); + return NULL; +JVM_END + + +JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) + if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); +JVM_END + + +JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) + if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); +JVM_END + + + +// Error message support ////////////////////////////////////////////////////// + +JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) + JVMWrapper("JVM_GetLastErrorString"); + return hpi::lasterror(buf, len); +JVM_END + + +// java.io.File /////////////////////////////////////////////////////////////// + +JVM_LEAF(char*, JVM_NativePath(char* path)) + JVMWrapper2("JVM_NativePath (%s)", path); + return hpi::native_path(path); +JVM_END + + +// Misc. class handling /////////////////////////////////////////////////////////// + + +JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) + JVMWrapper("JVM_GetCallerClass"); + klassOop k = thread->security_get_caller_class(depth); + return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); +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 + + +JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) + JVMWrapper("JVM_ResolveClass"); + if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); +JVM_END + + +JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, + jboolean init, jobject loader, + jboolean throwError)) + JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, + throwError ? "error" : "exception"); + // Java libraries should ensure that name is never null... + if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { + // It's impossible to create this class; the name cannot fit + // into the constant pool. + if (throwError) { + THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); + } else { + THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); + } + } + symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); + Handle h_loader(THREAD, JNIHandles::resolve(loader)); + jclass result = find_class_from_class_loader(env, h_name, init, h_loader, + Handle(), throwError, thread); + + if (TraceClassResolution && result != NULL) { + trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); + } + + return result; +JVM_END + + +JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, + jboolean init, jclass from)) + JVMWrapper2("JVM_FindClassFromClass %s", name); + if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { + // It's impossible to create this class; the name cannot fit + // into the constant pool. + THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); + } + symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); + oop from_class_oop = JNIHandles::resolve(from); + klassOop from_class = (from_class_oop == NULL) + ? (klassOop)NULL + : java_lang_Class::as_klassOop(from_class_oop); + oop class_loader = NULL; + oop protection_domain = NULL; + if (from_class != NULL) { + class_loader = Klass::cast(from_class)->class_loader(); + protection_domain = Klass::cast(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 (TraceClassResolution && result != NULL) { + // this function is generally only used for class loading during verification. + ResourceMark rm; + oop from_mirror = JNIHandles::resolve_non_null(from); + klassOop from_class = java_lang_Class::as_klassOop(from_mirror); + const char * from_name = Klass::cast(from_class)->external_name(); + + oop mirror = JNIHandles::resolve_non_null(result); + klassOop to_class = java_lang_Class::as_klassOop(mirror); + const char * to = Klass::cast(to_class)->external_name(); + tty->print("RESOLVE %s %s (verification)\n", 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) { + + // 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. + symbolHandle class_name; + if (name != NULL) { + const int str_len = (int)strlen(name); + if (str_len > symbolOopDesc::max_length()) { + // It's impossible to create this class; the name cannot fit + // into the constant pool. + THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); + } + class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL); + } + + ResourceMark rm(THREAD); + ClassFileStream st((u1*) buf, len, (char *)source); + 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)); + klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, + protection_domain, &st, + CHECK_NULL); + + if (TraceClassResolution && k != NULL) { + trace_class_resolution(k); + } + + return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); +} + + +JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) + JVMWrapper2("JVM_DefineClass %s", name); + + return jvm_define_class_common(env, name, loader, buf, len, pd, "__JVM_DefineClass__", 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)) + JVMWrapper2("JVM_DefineClassWithSource %s", name); + + 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 > symbolOopDesc::max_length()) { + // It's impossible to create this class; the name cannot fit + // into the constant pool. + return NULL; + } + symbolHandle klass_name = oopFactory::new_symbol_handle(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); + } + + klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, + h_loader, + Handle(), + CHECK_NULL); + + return (k == NULL) ? NULL : + (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); +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 + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); + assert(k->is_klass(), "just checking"); + name = Klass::cast(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); + } + + KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); + // Figure size of result array + int size; + if (klass->oop_is_instance()) { + size = instanceKlass::cast(klass())->local_interfaces()->length(); + } else { + assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "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->oop_is_instance()) { + // Regular instance klass, fill in all local interfaces + for (int index = 0; index < size; index++) { + klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); + result->obj_at_put(index, Klass::cast(k)->java_mirror()); + } + } else { + // All arrays implement java.lang.Cloneable and java.io.Serializable + result->obj_at_put(0, Klass::cast(SystemDictionary::cloneable_klass())->java_mirror()); + result->obj_at_put(1, Klass::cast(SystemDictionary::serializable_klass())->java_mirror()); + } + return (jobjectArray) JNIHandles::make_local(env, result()); +JVM_END + + +JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) + JVMWrapper("JVM_GetClassLoader"); + if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { + return NULL; + } + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + oop loader = Klass::cast(k)->class_loader(); + return JNIHandles::make_local(env, loader); +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; + } + klassOop k = java_lang_Class::as_klassOop(mirror); + jboolean result = Klass::cast(k)->is_interface(); + assert(!result || Klass::cast(k)->oop_is_instance(), + "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; + } + + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + objArrayOop signers = NULL; + if (Klass::cast(k)->oop_is_instance()) { + signers = instanceKlass::cast(k)->signers(); + } + + // 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 + klassOop 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. + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + if (Klass::cast(k)->oop_is_instance()) { + instanceKlass::cast(k)->set_signers(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; + } + + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); + return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); +JVM_END + + +// Obsolete since 1.2 (Class.setProtectionDomain removed), although +// still defined in core libraries as of 1.5. +JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) + JVMWrapper("JVM_SetProtectionDomain"); + if (JNIHandles::resolve(cls) == NULL) { + THROW(vmSymbols::java_lang_NullPointerException()); + } + if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { + // Call is ignored for primitive types + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); + + // cls won't be an array, as this called only from ClassLoader.defineClass + if (Klass::cast(k)->oop_is_instance()) { + oop pd = JNIHandles::resolve(protection_domain); + assert(pd == NULL || pd->is_oop(), "just checking"); + instanceKlass::cast(k)->set_protection_domain(pd); + } + } +JVM_END + + +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"); + } + + // Stack allocated list of privileged stack elements + PrivilegedElement pi; + + // Check that action object understands "Object run()" + Handle object (THREAD, JNIHandles::resolve(action)); + + // get run() method + methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( + vmSymbols::run_method_name(), + vmSymbols::void_object_signature()); + methodHandle m (THREAD, m_oop); + if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { + THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); + } + + // 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()) { + pi.initialize(&vfst, JNIHandles::resolve(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; + + if ( pending_exception->is_a(SystemDictionary::exception_klass()) && + !pending_exception->is_a(SystemDictionary::runtime_exception_klass())) { + // Throw a java.security.PrivilegedActionException(Exception e) exception + JavaCallArguments args(pending_exception); + THROW_ARG_0(vmSymbolHandles::java_security_PrivilegedActionException(), + vmSymbolHandles::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* 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* local_array = new GrowableArray(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 + methodOop 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 = instanceKlass::cast(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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? 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(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) + JVMWrapper("JVM_GetComponentType"); + oop mirror = JNIHandles::resolve_non_null(cls); + oop result = Reflection::array_component_type(mirror, CHECK_NULL); + return (jclass) JNIHandles::make_local(env, result); +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 = Klass::cast(java_lang_Class::as_klassOop(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)) + const int inner_class_info_index = 0; + const int outer_class_info_index = 1; + + 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)) || + ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { + oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); + return (jobjectArray)JNIHandles::make_local(env, result); + } + + instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); + + if (k->inner_classes()->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 + typeArrayHandle icls(thread, k->inner_classes()); + constantPoolHandle cp(thread, k->constants()); + int length = icls->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(int i = 0; i < length; i += 4) { + int ioff = icls->ushort_at(i + inner_class_info_index); + int ooff = icls->ushort_at(i + 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)) { + klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); + if (outer_klass == k()) { + klassOop ik = cp->klass_at(ioff, CHECK_NULL); + instanceKlassHandle inner_klass (THREAD, ik); + + // Throws an exception if outer klass has not declared k as + // an inner klass + Reflection::check_for_inner_class(k, inner_klass, 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)) + const int inner_class_info_index = 0; + const int outer_class_info_index = 1; + + // ofClass is a reference to a java_lang_Class object. + if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || + ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { + return NULL; + } + + instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); + + if (k->inner_classes()->length() == 0) { + // No inner class info => no declaring class + return NULL; + } + + typeArrayHandle i_icls(thread, k->inner_classes()); + constantPoolHandle i_cp(thread, k->constants()); + int i_length = i_icls->length(); + + bool found = false; + klassOop ok; + instanceKlassHandle outer_klass; + + // Find inner_klass attribute + for(int i = 0; i < i_length && !found; i+= 4) { + int ioff = i_icls->ushort_at(i + inner_class_info_index); + int ooff = i_icls->ushort_at(i + 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 (i_cp->klass_name_at_matches(k, ioff)) { + klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); + if (k() == inner_klass) { + found = true; + ok = i_cp->klass_at(ooff, CHECK_NULL); + outer_klass = instanceKlassHandle(thread, ok); + } + } + } + } + + // If no inner class attribute found for this class. + if (!found) return NULL; + + // Throws an exception if outer klass has not declared k as an inner klass + Reflection::check_for_inner_class(outer_klass, k, CHECK_NULL); + + return (jclass)JNIHandles::make_local(env, outer_klass->java_mirror()); +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))) { + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); + if (Klass::cast(k)->oop_is_instance()) { + symbolHandle sym = symbolHandle(THREAD, instanceKlass::cast(k)->generic_signature()); + if (sym.is_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"); + ResourceMark rm(THREAD); + // Return null for arrays and primitives + if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); + if (Klass::cast(k)->oop_is_instance()) { + return (jbyteArray) JNIHandles::make_local(env, + instanceKlass::cast(k)->class_annotations()); + } + } + return NULL; +JVM_END + + +JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) + assert(field != NULL, "illegal field"); + JVMWrapper("JVM_GetFieldAnnotations"); + + // some of this code was adapted from from jni_FromReflectedField + + // field is a handle to a java.lang.reflect.Field object + oop reflected = JNIHandles::resolve_non_null(field); + oop mirror = java_lang_reflect_Field::clazz(reflected); + klassOop k = java_lang_Class::as_klassOop(mirror); + int slot = java_lang_reflect_Field::slot(reflected); + int modifiers = java_lang_reflect_Field::modifiers(reflected); + + fieldDescriptor fd; + KlassHandle kh(THREAD, k); + intptr_t offset = instanceKlass::cast(kh())->offset_from_fields(slot); + + if (modifiers & JVM_ACC_STATIC) { + // for static fields we only look in the current class + if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, + true, &fd)) { + assert(false, "cannot find static field"); + return NULL; // robustness + } + } else { + // for instance fields we start with the current class and work + // our way up through the superclass chain + if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, + &fd)) { + assert(false, "cannot find instance field"); + return NULL; // robustness + } + } + + return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); +JVM_END + + +static methodOop jvm_get_method_common(jobject method, TRAPS) { + // 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); + } + klassOop k = java_lang_Class::as_klassOop(mirror); + + KlassHandle kh(THREAD, k); + methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); + if (m == NULL) { + assert(false, "cannot find method"); + return NULL; // robustness + } + + return m; +} + + +JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) + JVMWrapper("JVM_GetMethodAnnotations"); + + // method is a handle to a java.lang.reflect.Method object + methodOop m = jvm_get_method_common(method, CHECK_NULL); + return (jbyteArray) JNIHandles::make_local(env, m->annotations()); +JVM_END + + +JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) + JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); + + // method is a handle to a java.lang.reflect.Method object + methodOop m = jvm_get_method_common(method, CHECK_NULL); + return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); +JVM_END + + +JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) + JVMWrapper("JVM_GetMethodParameterAnnotations"); + + // method is a handle to a java.lang.reflect.Method object + methodOop m = jvm_get_method_common(method, CHECK_NULL); + return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); +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)) || + Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { + // Return empty array + oop res = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), 0, CHECK_NULL); + return (jobjectArray) JNIHandles::make_local(env, res); + } + + instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); + constantPoolHandle cp(THREAD, k->constants()); + + // Ensure class is linked + k->link_class(CHECK_NULL); + + typeArrayHandle fields(THREAD, k->fields()); + int fields_len = fields->length(); + + // 4496456 We need to filter out java.lang.Throwable.backtrace + bool skip_backtrace = false; + + // Allocate result + int num_fields; + + if (publicOnly) { + num_fields = 0; + for (int i = 0, j = 0; i < fields_len; i += instanceKlass::next_offset, j++) { + int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; + if (mods & JVM_ACC_PUBLIC) ++num_fields; + } + } else { + num_fields = fields_len / instanceKlass::next_offset; + + if (k() == SystemDictionary::throwable_klass()) { + num_fields--; + skip_backtrace = true; + } + } + + objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), num_fields, CHECK_NULL); + objArrayHandle result (THREAD, r); + + int out_idx = 0; + fieldDescriptor fd; + for (int i = 0; i < fields_len; i += instanceKlass::next_offset) { + if (skip_backtrace) { + // 4496456 skip java.lang.Throwable.backtrace + int offset = k->offset_from_fields(i); + if (offset == java_lang_Throwable::get_backtrace_offset()) continue; + } + + int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; + if (!publicOnly || (mods & JVM_ACC_PUBLIC)) { + fd.initialize(k(), i); + oop field = Reflection::new_field(&fd, UseNewReflection, 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 + +JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) +{ + JVMWrapper("JVM_GetClassDeclaredMethods"); + JvmtiVMObjectAllocEventCollector oam; + + // Exclude primitive types and array types + if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) + || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { + // Return empty array + oop res = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), 0, CHECK_NULL); + return (jobjectArray) JNIHandles::make_local(env, res); + } + + instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); + + // Ensure class is linked + k->link_class(CHECK_NULL); + + objArrayHandle methods (THREAD, k->methods()); + int methods_length = methods->length(); + int num_methods = 0; + + int i; + for (i = 0; i < methods_length; i++) { + methodHandle method(THREAD, (methodOop) methods->obj_at(i)); + if (!method->is_initializer()) { + if (!publicOnly || method->is_public()) { + ++num_methods; + } + } + } + + // Allocate result + objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), num_methods, CHECK_NULL); + objArrayHandle result (THREAD, r); + + int out_idx = 0; + for (i = 0; i < methods_length; i++) { + methodHandle method(THREAD, (methodOop) methods->obj_at(i)); + if (!method->is_initializer()) { + if (!publicOnly || method->is_public()) { + oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); + result->obj_at_put(out_idx, m); + ++out_idx; + } + } + } + assert(out_idx == num_methods, "just checking"); + return (jobjectArray) JNIHandles::make_local(env, result()); +} +JVM_END + +JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) +{ + JVMWrapper("JVM_GetClassDeclaredConstructors"); + JvmtiVMObjectAllocEventCollector oam; + + // Exclude primitive types and array types + if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) + || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { + // Return empty array + oop res = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0 , CHECK_NULL); + return (jobjectArray) JNIHandles::make_local(env, res); + } + + instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); + + // Ensure class is linked + k->link_class(CHECK_NULL); + + objArrayHandle methods (THREAD, k->methods()); + int methods_length = methods->length(); + int num_constructors = 0; + + int i; + for (i = 0; i < methods_length; i++) { + methodHandle method(THREAD, (methodOop) methods->obj_at(i)); + if (method->is_initializer() && !method->is_static()) { + if (!publicOnly || method->is_public()) { + ++num_constructors; + } + } + } + + // Allocate result + objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), num_constructors, CHECK_NULL); + objArrayHandle result(THREAD, r); + + int out_idx = 0; + for (i = 0; i < methods_length; i++) { + methodHandle method(THREAD, (methodOop) methods->obj_at(i)); + if (method->is_initializer() && !method->is_static()) { + if (!publicOnly || method->is_public()) { + oop m = Reflection::new_constructor(method, CHECK_NULL); + result->obj_at_put(out_idx, m); + ++out_idx; + } + } + } + assert(out_idx == num_constructors, "just checking"); + return (jobjectArray) JNIHandles::make_local(env, result()); +} +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 = Klass::cast(java_lang_Class::as_klassOop(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))) { + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + if (Klass::cast(k)->oop_is_instance()) { + instanceKlassHandle k_h(THREAD, k); + Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); + sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); + return JNIHandles::make_local(jcp()); + } + } + return NULL; +} +JVM_END + + +JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) +{ + JVMWrapper("JVM_ConstantPoolGetSize"); + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + return cp->length(); +} +JVM_END + + +static void bounds_check(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(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetClassAt"); + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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"); + } + klassOop k = cp->klass_at(index, CHECK_NULL); + return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); +} +JVM_END + + +JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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"); + } + klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); + if (k == NULL) return NULL; + return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); +} +JVM_END + +static jobject get_method_at_helper(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); + klassOop k_o; + if (force_resolution) { + k_o = cp->klass_at(klass_ref, CHECK_NULL); + } else { + k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); + if (k_o == NULL) return NULL; + } + instanceKlassHandle k(THREAD, k_o); + symbolOop name = cp->uncached_name_ref_at(index); + symbolOop 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, true, CHECK_NULL); + } else { + method = Reflection::new_constructor(m, CHECK_NULL); + } + return JNIHandles::make_local(method); +} + +JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetMethodAt"); + JvmtiVMObjectAllocEventCollector oam; + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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 unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); + JvmtiVMObjectAllocEventCollector oam; + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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); + klassOop k_o; + if (force_resolution) { + k_o = cp->klass_at(klass_ref, CHECK_NULL); + } else { + k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); + if (k_o == NULL) return NULL; + } + instanceKlassHandle k(THREAD, k_o); + symbolOop name = cp->uncached_name_ref_at(index); + symbolOop sig = cp->uncached_signature_ref_at(index); + fieldDescriptor fd; + klassOop 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, true, CHECK_NULL); + return JNIHandles::make_local(field); +} + +JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetFieldAt"); + JvmtiVMObjectAllocEventCollector oam; + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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 unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); + JvmtiVMObjectAllocEventCollector oam; + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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 unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); + JvmtiVMObjectAllocEventCollector oam; + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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); + symbolHandle klass_name (THREAD, cp->klass_name_at(klass_ref)); + symbolHandle member_name(THREAD, cp->uncached_name_ref_at(index)); + symbolHandle member_sig (THREAD, 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_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetIntAt"); + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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 unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetLongAt"); + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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 unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetFloatAt"); + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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 unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetDoubleAt"); + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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 unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetStringAt"); + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + bounds_check(cp, index, CHECK_NULL); + constantTag tag = cp->tag_at(index); + if (!tag.is_string() && !tag.is_unresolved_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 unused, jobject jcpool, jint index)) +{ + JVMWrapper("JVM_ConstantPoolGetUTF8At"); + JvmtiVMObjectAllocEventCollector oam; + constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); + 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"); + } + symbolOop sym_o = cp->symbol_at(index); + symbolHandle sym(THREAD, sym_o); + Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); + return (jstring) JNIHandles::make_local(str()); +} +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; + + klassOop k = java_lang_Class::as_klassOop(r); + assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); + if (! Klass::cast(k)->oop_is_instance()) return false; + + ResourceMark rm(THREAD); + const char* name = Klass::cast(k)->name()->as_C_string(); + bool system_class = Klass::cast(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: +// klassOop class_to_verify_considering_redefinition(klassOop klass). +// The function returns a klassOop 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 klassOop. +// Please, refer to the description in the jvmtiThreadSate.hpp. + +JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) + JVMWrapper("JVM_GetClassNameUTF"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + return Klass::cast(k)->name()->as_utf8(); +JVM_END + + +JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) + JVMWrapper("JVM_GetClassCPTypes"); + klassOop k = java_lang_Class::as_klassOop(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 (Klass::cast(k)->oop_is_instance()) { + constantPoolOop 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.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); + } + } +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) + JVMWrapper("JVM_GetClassCPEntriesCount"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + if (!Klass::cast(k)->oop_is_instance()) + return 0; + return instanceKlass::cast(k)->constants()->length(); +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) + JVMWrapper("JVM_GetClassFieldsCount"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + if (!Klass::cast(k)->oop_is_instance()) + return 0; + return instanceKlass::cast(k)->fields()->length() / instanceKlass::next_offset; +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) + JVMWrapper("JVM_GetClassMethodsCount"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + if (!Klass::cast(k)->oop_is_instance()) + return 0; + return 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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + int length = methodOop(method)->checked_exceptions_length(); + if (length > 0) { + CheckedExceptionElement* table= methodOop(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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) + JVMWrapper("JVM_GetMethodIxByteCodeLength"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + typeArrayOop extable = methodOop(method)->exception_table(); + entry->start_pc = extable->int_at(entry_index * 4); + entry->end_pc = extable->int_at(entry_index * 4 + 1); + entry->handler_pc = extable->int_at(entry_index * 4 + 2); + entry->catchType = extable->int_at(entry_index * 4 + 3); +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) + JVMWrapper("JVM_GetMethodIxExceptionTableLength"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(method)->exception_table()->length() / 4; +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) + JVMWrapper("JVM_GetMethodIxModifiers"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + typeArrayOop fields = instanceKlass::cast(k)->fields(); + return fields->ushort_at(field_index * instanceKlass::next_offset + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) + JVMWrapper("JVM_GetMethodIxLocalsCount"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(method)->max_locals(); +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) + JVMWrapper("JVM_GetMethodIxArgsSize"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(method)->size_of_parameters(); +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) + JVMWrapper("JVM_GetMethodIxMaxStack"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(method)->max_stack(); +JVM_END + + +JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) + JVMWrapper("JVM_IsConstructorIx"); + ResourceMark rm(THREAD); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(method)->name() == vmSymbols::object_initializer_name(); +JVM_END + + +JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) + JVMWrapper("JVM_GetMethodIxIxUTF"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(method)->name()->as_utf8(); +JVM_END + + +JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) + JVMWrapper("JVM_GetMethodIxSignatureUTF"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); + return methodOop(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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + constantPoolOop 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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + constantPoolOop 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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + constantPoolOop 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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + constantPoolOop 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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + constantPoolOop cp = instanceKlass::cast(k)->constants(); + symbolOop 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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + constantPoolOop 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); + symbolOop 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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); + constantPoolOop 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); + symbolOop classname = cp->klass_name_at(class_index); + return classname->as_utf8(); + } + default: + fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); + } + ShouldNotReachHere(); + return NULL; +JVM_END + + +JVM_QUICK_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) + JVMWrapper("JVM_GetCPFieldModifiers"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + klassOop k_called = java_lang_Class::as_klassOop(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); + constantPoolOop cp = instanceKlass::cast(k)->constants(); + constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); + switch (cp->tag_at(cp_index).value()) { + case JVM_CONSTANT_Fieldref: { + symbolOop name = cp->uncached_name_ref_at(cp_index); + symbolOop signature = cp->uncached_signature_ref_at(cp_index); + typeArrayOop fields = instanceKlass::cast(k_called)->fields(); + int fields_count = fields->length(); + for (int i = 0; i < fields_count; i += instanceKlass::next_offset) { + if (cp_called->symbol_at(fields->ushort_at(i + instanceKlass::name_index_offset)) == name && + cp_called->symbol_at(fields->ushort_at(i + instanceKlass::signature_index_offset)) == signature) { + return fields->ushort_at(i + instanceKlass::access_flags_offset) & 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"); + klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); + klassOop k_called = java_lang_Class::as_klassOop(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); + constantPoolOop cp = instanceKlass::cast(k)->constants(); + switch (cp->tag_at(cp_index).value()) { + case JVM_CONSTANT_Methodref: + case JVM_CONSTANT_InterfaceMethodref: { + symbolOop name = cp->uncached_name_ref_at(cp_index); + symbolOop signature = cp->uncached_signature_ref_at(cp_index); + objArrayOop methods = instanceKlass::cast(k_called)->methods(); + int methods_count = methods->length(); + for (int i = 0; i < methods_count; i++) { + methodOop method = methodOop(methods->obj_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); + klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); + klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); + return (jboolean) Reflection::is_same_class_package(klass1, klass2); +JVM_END + + +// IO functions //////////////////////////////////////////////////////////////////////////////////////// + +JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) + JVMWrapper2("JVM_Open (%s)", fname); + + //%note jvm_r6 + int result = hpi::open(fname, flags, mode); + if (result >= 0) { + return result; + } else { + switch(errno) { + case EEXIST: + return JVM_EEXIST; + default: + return -1; + } + } +JVM_END + + +JVM_LEAF(jint, JVM_Close(jint fd)) + JVMWrapper2("JVM_Close (0x%x)", fd); + //%note jvm_r6 + return hpi::close(fd); +JVM_END + + +JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) + JVMWrapper2("JVM_Read (0x%x)", fd); + + //%note jvm_r6 + return (jint)hpi::read(fd, buf, nbytes); +JVM_END + + +JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) + JVMWrapper2("JVM_Write (0x%x)", fd); + + //%note jvm_r6 + return (jint)hpi::write(fd, buf, nbytes); +JVM_END + + +JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) + JVMWrapper2("JVM_Available (0x%x)", fd); + //%note jvm_r6 + return hpi::available(fd, pbytes); +JVM_END + + +JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) + JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); + //%note jvm_r6 + return hpi::lseek(fd, offset, whence); +JVM_END + + +JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) + JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); + return hpi::ftruncate(fd, length); +JVM_END + + +JVM_LEAF(jint, JVM_Sync(jint fd)) + JVMWrapper2("JVM_Sync (0x%x)", fd); + //%note jvm_r6 + return hpi::fsync(fd); +JVM_END + + +// Printing support ////////////////////////////////////////////////// +extern "C" { + +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; + return vsnprintf(str, count, fmt, args); +} + + +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; +} + + +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; +} + + +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); + } +} + + +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 { + ::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, + KlassHandle(THREAD, SystemDictionary::thread_klass()), + vmSymbolHandles::run_method_name(), + vmSymbolHandles::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); + + // Check to see if we're running a thread that's already exited or was + // stopped (is_stillborn) or is still active (thread is not NULL). + if (java_lang_Thread::is_stillborn(JNIHandles::resolve_non_null(jthread)) || + java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { + throw_illegal_thread_state = true; + } else { + 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 signed, but the constructor takes + // size_t (an unsigned type), so avoid passing negative values which would + // result in really large stacks. + 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, + "unable to create new native thread"); + } + THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), + "unable to create new native thread"); + } + + 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 +// save 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("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); + // First check if thread already exited + 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()) { + // This is a change from JDK 1.1, but JDK 1.2 will also do it: + // NOTE (from JDK 1.2): this is done solely to prevent stopped + // threads from being restarted. + // Fix for 4314342, 4145910, perhaps others: it now doesn't have + // any effect on the "liveness" of a thread; see + // JVM_IsThreadAlive, below. + if (java_throwable->is_a(SystemDictionary::threaddeath_klass())) { + java_lang_Thread::set_stillborn(java_thread); + } + 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)); + } + } +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; + // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. + // Critical for similar threading behaviour + if (ConvertYieldToSleep) { + os::sleep(thread, MinSleepInterval, false); + } else { + os::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); + + if (millis == 0) { + // When ConvertSleepToYield is on, this matches the classic VM implementation of + // JVM_Sleep. Critical for similar threading behaviour (Win32) + // It appears that in certain GUI contexts, it may be beneficial to do a short sleep + // for SOLARIS + if (ConvertSleepToYield) { + os::yield(); + } else { + ThreadState old_state = thread->osthread()->get_state(); + thread->osthread()->set_state(SLEEPING); + os::sleep(thread, MinSleepInterval, false); + thread->osthread()->set_state(old_state); + } + } 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) { + // 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); + } +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 + + +// 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; + + methodOop m = vfst.method(); + if (!m->is_native()) { + klassOop holder = m->method_holder(); + oop loader = instanceKlass::cast(holder)->class_loader(); + if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { + return (jclass) JNIHandles::make_local(env, Klass::cast(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; + + methodOop m = vfst.method(); + if (!m->is_native()) { + klassOop holder = m->method_holder(); + assert(holder->is_klass(), "just checking"); + oop loader = instanceKlass::cast(holder)->class_loader(); + if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { + return JNIHandles::make_local(env, loader); + } + } + } + return NULL; +JVM_END + + +// Utility object for collecting method holders walking down the stack +class KlassLink: public ResourceObj { + public: + KlassHandle klass; + KlassLink* next; + + KlassLink(KlassHandle k) { klass = k; next = NULL; } +}; + + +JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) + JVMWrapper("JVM_GetClassContext"); + ResourceMark rm(THREAD); + JvmtiVMObjectAllocEventCollector oam; + // Collect linked list of (handles to) method holders + KlassLink* first = NULL; + KlassLink* last = NULL; + int depth = 0; + + for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { + // Native frames are not returned + if (!vfst.method()->is_native()) { + klassOop holder = vfst.method()->method_holder(); + assert(holder->is_klass(), "just checking"); + depth++; + KlassLink* l = new KlassLink(KlassHandle(thread, holder)); + if (first == NULL) { + first = last = l; + } else { + last->next = l; + last = l; + } + } + } + + // Create result array of type [Ljava/lang/Class; + objArrayOop result = oopFactory::new_objArray(SystemDictionary::class_klass(), depth, CHECK_NULL); + // Fill in mirrors corresponding to method holders + int index = 0; + while (first != NULL) { + result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); + first = first->next; + } + assert(index == depth, "just checking"); + + 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()); + symbolHandle class_name_sym = + symbolHandle(THREAD, SymbolTable::probe(str, (int)strlen(str))); + if (class_name_sym.is_null()) { + return -1; + } + + int depth = 0; + + for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { + if (!vfst.method()->is_native()) { + klassOop holder = vfst.method()->method_holder(); + assert(holder->is_klass(), "just checking"); + if (instanceKlass::cast(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; + + methodOop m = vfst.method(); + if (!m->is_native()) { + klassOop holder = m->method_holder(); + assert(holder->is_klass(), "just checking"); + oop loader = instanceKlass::cast(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 + + +// ObjectInputStream /////////////////////////////////////////////////////////////// + +bool force_verify_field_access(klassOop current_class, klassOop 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 (Klass::cast(current_class)->is_subclass_of(field_class)) { + return true; + } + } + + return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); +} + + +// JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 +JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) + JVMWrapper("JVM_AllocateNewObject"); + JvmtiVMObjectAllocEventCollector oam; + // Receiver is not used + oop curr_mirror = JNIHandles::resolve_non_null(currClass); + oop init_mirror = JNIHandles::resolve_non_null(initClass); + + // Cannot instantiate primitive types + if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { + ResourceMark rm(THREAD); + THROW_0(vmSymbols::java_lang_InvalidClassException()); + } + + // Arrays not allowed here, must use JVM_AllocateNewArray + if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || + Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { + ResourceMark rm(THREAD); + THROW_0(vmSymbols::java_lang_InvalidClassException()); + } + + instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); + instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); + + assert(curr_klass->is_subclass_of(init_klass()), "just checking"); + + // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. + curr_klass->check_valid_for_instantiation(false, CHECK_NULL); + + // Make sure klass is initialized, since we are about to instantiate one of them. + curr_klass->initialize(CHECK_NULL); + + methodHandle m (THREAD, + init_klass->find_method(vmSymbols::object_initializer_name(), + vmSymbols::void_method_signature())); + if (m.is_null()) { + ResourceMark rm(THREAD); + THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), + methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), + vmSymbols::object_initializer_name(), + vmSymbols::void_method_signature())); + } + + if (curr_klass == init_klass && !m->is_public()) { + // Calling the constructor for class 'curr_klass'. + // Only allow calls to a public no-arg constructor. + // This path corresponds to creating an Externalizable object. + THROW_0(vmSymbols::java_lang_IllegalAccessException()); + } + + if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { + // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' + THROW_0(vmSymbols::java_lang_IllegalAccessException()); + } + + Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); + // Call constructor m. This might call a constructor higher up in the hierachy + JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); + + return JNIHandles::make_local(obj()); +JVM_END + + +JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) + JVMWrapper("JVM_AllocateNewArray"); + JvmtiVMObjectAllocEventCollector oam; + oop mirror = JNIHandles::resolve_non_null(currClass); + + if (java_lang_Class::is_primitive(mirror)) { + THROW_0(vmSymbols::java_lang_InvalidClassException()); + } + klassOop k = java_lang_Class::as_klassOop(mirror); + oop result; + + if (k->klass_part()->oop_is_typeArray()) { + // typeArray + result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); + } else if (k->klass_part()->oop_is_objArray()) { + // objArray + objArrayKlassHandle oak(THREAD, k); + oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) + result = oak->allocate(length, CHECK_NULL); + } else { + THROW_0(vmSymbols::java_lang_InvalidClassException()); + } + return JNIHandles::make_local(env, result); +JVM_END + + +// Return the first non-null class loader up the execution stack, or null +// if only code from the null class loader is on the stack. + +JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) + for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { + // UseNewReflection + vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection + klassOop holder = vfst.method()->method_holder(); + oop loader = instanceKlass::cast(holder)->class_loader(); + if (loader != NULL) { + return JNIHandles::make_local(env, loader); + } + } + return NULL; +JVM_END + + +// Load a class relative to the most recent class on the stack with a non-null +// classloader. +// This function has been deprecated and should not be considered part of the +// specified JVM interface. + +JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, + jclass currClass, jstring currClassName)) + JVMWrapper("JVM_LoadClass0"); + // Receiver is not used + ResourceMark rm(THREAD); + + // Class name argument is not guaranteed to be in internal format + Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); + Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); + + const char* str = java_lang_String::as_utf8_string(string()); + + if (str == NULL || (int)strlen(str) > symbolOopDesc::max_length()) { + // It's impossible to create this class; the name cannot fit + // into the constant pool. + THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); + } + + symbolHandle name = oopFactory::new_symbol_handle(str, CHECK_NULL); + Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); + // Find the most recent class on the stack with a non-null classloader + oop loader = NULL; + oop protection_domain = NULL; + if (curr_klass.is_null()) { + for (vframeStream vfst(thread); + !vfst.at_end() && loader == NULL; + vfst.next()) { + if (!vfst.method()->is_native()) { + klassOop holder = vfst.method()->method_holder(); + loader = instanceKlass::cast(holder)->class_loader(); + protection_domain = instanceKlass::cast(holder)->protection_domain(); + } + } + } else { + klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); + loader = instanceKlass::cast(curr_klass_oop)->class_loader(); + protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); + } + Handle h_loader(THREAD, loader); + Handle h_prot (THREAD, protection_domain); + return find_class_from_class_loader(env, name, true, h_loader, h_prot, + false, thread); +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_javaArray() || (type_array_only && !a->is_typeArray())) { + THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); + } + 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 + + +// Networking library support //////////////////////////////////////////////////////////////////// + +JVM_LEAF(jint, JVM_InitializeSocketLibrary()) + JVMWrapper("JVM_InitializeSocketLibrary"); + return hpi::initialize_socket_library(); +JVM_END + + +JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) + JVMWrapper("JVM_Socket"); + return hpi::socket(domain, type, protocol); +JVM_END + + +JVM_LEAF(jint, JVM_SocketClose(jint fd)) + JVMWrapper2("JVM_SocketClose (0x%x)", fd); + //%note jvm_r6 + return hpi::socket_close(fd); +JVM_END + + +JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) + JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); + //%note jvm_r6 + return hpi::socket_shutdown(fd, howto); +JVM_END + + +JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) + JVMWrapper2("JVM_Recv (0x%x)", fd); + //%note jvm_r6 + return hpi::recv(fd, buf, nBytes, flags); +JVM_END + + +JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) + JVMWrapper2("JVM_Send (0x%x)", fd); + //%note jvm_r6 + return hpi::send(fd, buf, nBytes, flags); +JVM_END + + +JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) + JVMWrapper2("JVM_Timeout (0x%x)", fd); + //%note jvm_r6 + return hpi::timeout(fd, timeout); +JVM_END + + +JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) + JVMWrapper2("JVM_Listen (0x%x)", fd); + //%note jvm_r6 + return hpi::listen(fd, count); +JVM_END + + +JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) + JVMWrapper2("JVM_Connect (0x%x)", fd); + //%note jvm_r6 + return hpi::connect(fd, him, len); +JVM_END + + +JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) + JVMWrapper2("JVM_Bind (0x%x)", fd); + //%note jvm_r6 + return hpi::bind(fd, him, len); +JVM_END + + +JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) + JVMWrapper2("JVM_Accept (0x%x)", fd); + //%note jvm_r6 + return hpi::accept(fd, him, (int *)len); +JVM_END + + +JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) + JVMWrapper2("JVM_RecvFrom (0x%x)", fd); + //%note jvm_r6 + return hpi::recvfrom(fd, buf, nBytes, flags, from, fromlen); +JVM_END + + +JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) + JVMWrapper2("JVM_GetSockName (0x%x)", fd); + //%note jvm_r6 + return hpi::get_sock_name(fd, him, len); +JVM_END + + +JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) + JVMWrapper2("JVM_SendTo (0x%x)", fd); + //%note jvm_r6 + return hpi::sendto(fd, buf, len, flags, to, tolen); +JVM_END + + +JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) + JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); + //%note jvm_r6 + return hpi::socket_available(fd, pbytes); +JVM_END + + +JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) + JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); + //%note jvm_r6 + return hpi::get_sock_opt(fd, level, optname, optval, optlen); +JVM_END + + +JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) + JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); + //%note jvm_r6 + return hpi::set_sock_opt(fd, level, optname, optval, optlen); +JVM_END + +JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) + JVMWrapper("JVM_GetHostName"); + return hpi::get_host_name(name, namelen); +JVM_END + +#ifdef _WINDOWS + +JVM_LEAF(struct hostent*, JVM_GetHostByAddr(const char* name, int len, int type)) + JVMWrapper("JVM_GetHostByAddr"); + return hpi::get_host_by_addr(name, len, type); +JVM_END + + +JVM_LEAF(struct hostent*, JVM_GetHostByName(char* name)) + JVMWrapper("JVM_GetHostByName"); + return hpi::get_host_by_name(name); +JVM_END + + +JVM_LEAF(struct protoent*, JVM_GetProtoByName(char* name)) + JVMWrapper("JVM_GetProtoByName"); + return hpi::get_proto_by_name(name); +JVM_END + +#endif + +// Library support /////////////////////////////////////////////////////////////////////////// + +JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) + //%note jvm_ct + JVMWrapper2("JVM_LoadLibrary (%s)", name); + char ebuf[1024]; + void *load_result; + { + ThreadToNativeFromVM ttnfvm(thread); + load_result = hpi::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"); + hpi::dll_unload(handle); +JVM_END + + +JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) + JVMWrapper2("JVM_FindLibraryEntry (%s)", name); + return hpi::dll_lookup(handle, name); +JVM_END + +// Floating point support //////////////////////////////////////////////////////////////////// + +JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) + JVMWrapper("JVM_IsNaN"); + return g_isnan(a); +JVM_END + + + +// JNI version /////////////////////////////////////////////////////////////////////////////// + +JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) + JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); + 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(); +} + + +// Support for Serialization + +typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); +typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); +typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); +typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); + +static IntBitsToFloatFn int_bits_to_float_fn = NULL; +static LongBitsToDoubleFn long_bits_to_double_fn = NULL; +static FloatToIntBitsFn float_to_int_bits_fn = NULL; +static DoubleToLongBitsFn double_to_long_bits_fn = NULL; + + +void initialize_converter_functions() { + if (JDK_Version::is_gte_jdk14x_version()) { + // These functions only exist for compatibility with 1.3.1 and earlier + return; + } + + // called from universe_post_init() + assert( + int_bits_to_float_fn == NULL && + long_bits_to_double_fn == NULL && + float_to_int_bits_fn == NULL && + double_to_long_bits_fn == NULL , + "initialization done twice" + ); + // initialize + int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); + long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); + float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); + double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); + // verify + assert( + int_bits_to_float_fn != NULL && + long_bits_to_double_fn != NULL && + float_to_int_bits_fn != NULL && + double_to_long_bits_fn != NULL , + "initialization failed" + ); +} + + +// Serialization +JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, + jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) + assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); + + typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); + typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); + typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); + oop o = JNIHandles::resolve(obj); + + if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { + THROW(vmSymbols::java_lang_NullPointerException()); + } + + jsize nfids = fids->length(); + if (nfids == 0) return; + + if (tcodes->length() < nfids) { + THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); + } + + jsize off = 0; + /* loop through fields, setting values */ + for (jsize i = 0; i < nfids; i++) { + jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); + int field_offset; + if (fid != NULL) { + // NULL is a legal value for fid, but retrieving the field offset + // trigger assertion in that case + field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); + } + + switch (tcodes->char_at(i)) { + case 'Z': + if (fid != NULL) { + jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; + o->bool_field_put(field_offset, val); + } + off++; + break; + + case 'B': + if (fid != NULL) { + o->byte_field_put(field_offset, dbuf->byte_at(off)); + } + off++; + break; + + case 'C': + if (fid != NULL) { + jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) + + ((dbuf->byte_at(off + 1) & 0xFF) << 0); + o->char_field_put(field_offset, val); + } + off += 2; + break; + + case 'S': + if (fid != NULL) { + jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) + + ((dbuf->byte_at(off + 1) & 0xFF) << 0); + o->short_field_put(field_offset, val); + } + off += 2; + break; + + case 'I': + if (fid != NULL) { + jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) + + ((dbuf->byte_at(off + 1) & 0xFF) << 16) + + ((dbuf->byte_at(off + 2) & 0xFF) << 8) + + ((dbuf->byte_at(off + 3) & 0xFF) << 0); + o->int_field_put(field_offset, ival); + } + off += 4; + break; + + case 'F': + if (fid != NULL) { + jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) + + ((dbuf->byte_at(off + 1) & 0xFF) << 16) + + ((dbuf->byte_at(off + 2) & 0xFF) << 8) + + ((dbuf->byte_at(off + 3) & 0xFF) << 0); + jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); + o->float_field_put(field_offset, fval); + } + off += 4; + break; + + case 'J': + if (fid != NULL) { + jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) + + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) + + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) + + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) + + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) + + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) + + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) + + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); + o->long_field_put(field_offset, lval); + } + off += 8; + break; + + case 'D': + if (fid != NULL) { + jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) + + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) + + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) + + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) + + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) + + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) + + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) + + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); + jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); + o->double_field_put(field_offset, dval); + } + off += 8; + break; + + default: + // Illegal typecode + THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); + } + } +JVM_END + + +JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, + jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) + assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); + + typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); + typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); + typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); + oop o = JNIHandles::resolve(obj); + + if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { + THROW(vmSymbols::java_lang_NullPointerException()); + } + + jsize nfids = fids->length(); + if (nfids == 0) return; + + if (tcodes->length() < nfids) { + THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); + } + + /* loop through fields, fetching values */ + jsize off = 0; + for (jsize i = 0; i < nfids; i++) { + jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); + if (fid == NULL) { + THROW(vmSymbols::java_lang_NullPointerException()); + } + int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); + + switch (tcodes->char_at(i)) { + case 'Z': + { + jboolean val = o->bool_field(field_offset); + dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); + } + break; + + case 'B': + dbuf->byte_at_put(off++, o->byte_field(field_offset)); + break; + + case 'C': + { + jchar val = o->char_field(field_offset); + dbuf->byte_at_put(off++, (val >> 8) & 0xFF); + dbuf->byte_at_put(off++, (val >> 0) & 0xFF); + } + break; + + case 'S': + { + jshort val = o->short_field(field_offset); + dbuf->byte_at_put(off++, (val >> 8) & 0xFF); + dbuf->byte_at_put(off++, (val >> 0) & 0xFF); + } + break; + + case 'I': + { + jint val = o->int_field(field_offset); + dbuf->byte_at_put(off++, (val >> 24) & 0xFF); + dbuf->byte_at_put(off++, (val >> 16) & 0xFF); + dbuf->byte_at_put(off++, (val >> 8) & 0xFF); + dbuf->byte_at_put(off++, (val >> 0) & 0xFF); + } + break; + + case 'F': + { + jfloat fval = o->float_field(field_offset); + jint ival = (*float_to_int_bits_fn)(env, NULL, fval); + dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); + dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); + dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); + dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); + } + break; + + case 'J': + { + jlong val = o->long_field(field_offset); + dbuf->byte_at_put(off++, (val >> 56) & 0xFF); + dbuf->byte_at_put(off++, (val >> 48) & 0xFF); + dbuf->byte_at_put(off++, (val >> 40) & 0xFF); + dbuf->byte_at_put(off++, (val >> 32) & 0xFF); + dbuf->byte_at_put(off++, (val >> 24) & 0xFF); + dbuf->byte_at_put(off++, (val >> 16) & 0xFF); + dbuf->byte_at_put(off++, (val >> 8) & 0xFF); + dbuf->byte_at_put(off++, (val >> 0) & 0xFF); + } + break; + + case 'D': + { + jdouble dval = o->double_field(field_offset); + jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); + dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); + dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); + dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); + dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); + dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); + dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); + dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); + dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); + } + break; + + default: + // Illegal typecode + THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); + } + } +JVM_END + + +// Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// + +jclass find_class_from_class_loader(JNIEnv* env, symbolHandle 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. + klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); + KlassHandle klass_handle(THREAD, klass); + // Check if we should initialize the class + if (init && klass_handle->oop_is_instance()) { + klass_handle->initialize(CHECK_NULL); + } + return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); +} + + +// Internal SQE debugging support /////////////////////////////////////////////////////////// + +#ifndef PRODUCT + +extern "C" { + JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); + JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); + JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); +} + +JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) + JVMWrapper("JVM_AccessBoolVMFlag"); + return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); +JVM_END + +JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) + JVMWrapper("JVM_AccessVMIntFlag"); + intx v; + jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); + *value = (jint)v; + return result; +JVM_END + + +JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) + JVMWrapper("JVM_VMBreakPoint"); + oop the_obj = JNIHandles::resolve(obj); + BREAKPOINT; +JVM_END + + +#endif + + +//--------------------------------------------------------------------------- +// +// Support for old native code-based reflection (pre-JDK 1.4) +// Disabled by default in the product build. +// +// See reflection.hpp for information on SUPPORT_OLD_REFLECTION +// +//--------------------------------------------------------------------------- + +#ifdef SUPPORT_OLD_REFLECTION + +JVM_ENTRY(jobjectArray, JVM_GetClassFields(JNIEnv *env, jclass cls, jint which)) + JVMWrapper("JVM_GetClassFields"); + JvmtiVMObjectAllocEventCollector oam; + oop mirror = JNIHandles::resolve_non_null(cls); + objArrayOop result = Reflection::reflect_fields(mirror, which, CHECK_NULL); + return (jobjectArray) JNIHandles::make_local(env, result); +JVM_END + + +JVM_ENTRY(jobjectArray, JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which)) + JVMWrapper("JVM_GetClassMethods"); + JvmtiVMObjectAllocEventCollector oam; + oop mirror = JNIHandles::resolve_non_null(cls); + objArrayOop result = Reflection::reflect_methods(mirror, which, CHECK_NULL); + //%note jvm_r4 + return (jobjectArray) JNIHandles::make_local(env, result); +JVM_END + + +JVM_ENTRY(jobjectArray, JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which)) + JVMWrapper("JVM_GetClassConstructors"); + JvmtiVMObjectAllocEventCollector oam; + oop mirror = JNIHandles::resolve_non_null(cls); + objArrayOop result = Reflection::reflect_constructors(mirror, which, CHECK_NULL); + //%note jvm_r4 + return (jobjectArray) JNIHandles::make_local(env, result); +JVM_END + + +JVM_ENTRY(jobject, JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which)) + JVMWrapper("JVM_GetClassField"); + JvmtiVMObjectAllocEventCollector oam; + if (name == NULL) return NULL; + Handle str (THREAD, JNIHandles::resolve_non_null(name)); + + const char* cstr = java_lang_String::as_utf8_string(str()); + symbolHandle field_name = + symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); + if (field_name.is_null()) { + THROW_0(vmSymbols::java_lang_NoSuchFieldException()); + } + + oop mirror = JNIHandles::resolve_non_null(cls); + oop result = Reflection::reflect_field(mirror, field_name(), which, CHECK_NULL); + if (result == NULL) { + THROW_0(vmSymbols::java_lang_NoSuchFieldException()); + } + return JNIHandles::make_local(env, result); +JVM_END + + +JVM_ENTRY(jobject, JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, jint which)) + JVMWrapper("JVM_GetClassMethod"); + JvmtiVMObjectAllocEventCollector oam; + if (name == NULL) { + THROW_0(vmSymbols::java_lang_NullPointerException()); + } + Handle str (THREAD, JNIHandles::resolve_non_null(name)); + + const char* cstr = java_lang_String::as_utf8_string(str()); + symbolHandle method_name = + symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); + if (method_name.is_null()) { + THROW_0(vmSymbols::java_lang_NoSuchMethodException()); + } + + oop mirror = JNIHandles::resolve_non_null(cls); + objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); + oop result = Reflection::reflect_method(mirror, method_name, tarray, + which, CHECK_NULL); + if (result == NULL) { + THROW_0(vmSymbols::java_lang_NoSuchMethodException()); + } + return JNIHandles::make_local(env, result); +JVM_END + + +JVM_ENTRY(jobject, JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, jint which)) + JVMWrapper("JVM_GetClassConstructor"); + JvmtiVMObjectAllocEventCollector oam; + oop mirror = JNIHandles::resolve_non_null(cls); + objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); + oop result = Reflection::reflect_constructor(mirror, tarray, which, CHECK_NULL); + if (result == NULL) { + THROW_0(vmSymbols::java_lang_NoSuchMethodException()); + } + return (jobject) JNIHandles::make_local(env, result); +JVM_END + + +// Instantiation /////////////////////////////////////////////////////////////////////////////// + +JVM_ENTRY(jobject, JVM_NewInstance(JNIEnv *env, jclass cls)) + JVMWrapper("JVM_NewInstance"); + Handle mirror(THREAD, JNIHandles::resolve_non_null(cls)); + + methodOop resolved_constructor = java_lang_Class::resolved_constructor(mirror()); + if (resolved_constructor == NULL) { + klassOop k = java_lang_Class::as_klassOop(mirror()); + // The java.lang.Class object caches a resolved constructor if all the checks + // below were done successfully and a constructor was found. + + // Do class based checks + if (java_lang_Class::is_primitive(mirror())) { + const char* msg = ""; + if (mirror == Universe::bool_mirror()) msg = "java/lang/Boolean"; + else if (mirror == Universe::char_mirror()) msg = "java/lang/Character"; + else if (mirror == Universe::float_mirror()) msg = "java/lang/Float"; + else if (mirror == Universe::double_mirror()) msg = "java/lang/Double"; + else if (mirror == Universe::byte_mirror()) msg = "java/lang/Byte"; + else if (mirror == Universe::short_mirror()) msg = "java/lang/Short"; + else if (mirror == Universe::int_mirror()) msg = "java/lang/Integer"; + else if (mirror == Universe::long_mirror()) msg = "java/lang/Long"; + THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), msg); + } + + // Check whether we are allowed to instantiate this class + Klass::cast(k)->check_valid_for_instantiation(false, CHECK_NULL); // Array classes get caught here + instanceKlassHandle klass(THREAD, k); + // Make sure class is initialized (also so all methods are rewritten) + klass->initialize(CHECK_NULL); + + // Lookup default constructor + resolved_constructor = klass->find_method(vmSymbols::object_initializer_name(), vmSymbols::void_method_signature()); + if (resolved_constructor == NULL) { + ResourceMark rm(THREAD); + THROW_MSG_0(vmSymbols::java_lang_InstantiationException(), klass->external_name()); + } + + // Cache result in java.lang.Class object. Does not have to be MT safe. + java_lang_Class::set_resolved_constructor(mirror(), resolved_constructor); + } + + assert(resolved_constructor != NULL, "sanity check"); + methodHandle constructor = methodHandle(THREAD, resolved_constructor); + + // We have an initialized instanceKlass with a default constructor + instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); + assert(klass->is_initialized() || klass->is_being_initialized(), "sanity check"); + + // Do security check + klassOop caller_klass = NULL; + if (UsePrivilegedStack) { + caller_klass = thread->security_get_caller_class(2); + + if (!Reflection::verify_class_access(caller_klass, klass(), false) || + !Reflection::verify_field_access(caller_klass, + klass(), + klass(), + constructor->access_flags(), + false, + true)) { + ResourceMark rm(THREAD); + THROW_MSG_0(vmSymbols::java_lang_IllegalAccessException(), klass->external_name()); + } + } + + // Allocate object and call constructor + Handle receiver = klass->allocate_instance_handle(CHECK_NULL); + JavaCalls::call_default_constructor(thread, constructor, receiver, CHECK_NULL); + + jobject res = JNIHandles::make_local(env, receiver()); + if (JvmtiExport::should_post_vm_object_alloc()) { + JvmtiExport::post_vm_object_alloc(JavaThread::current(), receiver()); + } + return res; +JVM_END + + +// Field //////////////////////////////////////////////////////////////////////////////////////////// + +JVM_ENTRY(jobject, JVM_GetField(JNIEnv *env, jobject field, jobject obj)) + JVMWrapper("JVM_GetField"); + JvmtiVMObjectAllocEventCollector oam; + Handle field_mirror(thread, JNIHandles::resolve(field)); + Handle receiver (thread, JNIHandles::resolve(obj)); + fieldDescriptor fd; + Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_NULL); + jvalue value; + BasicType type = Reflection::field_get(&value, &fd, receiver); + oop box = Reflection::box(&value, type, CHECK_NULL); + return JNIHandles::make_local(env, box); +JVM_END + + +JVM_ENTRY(jvalue, JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, unsigned char wCode)) + JVMWrapper("JVM_GetPrimitiveField"); + Handle field_mirror(thread, JNIHandles::resolve(field)); + Handle receiver (thread, JNIHandles::resolve(obj)); + fieldDescriptor fd; + jvalue value; + value.j = 0; + Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_(value)); + BasicType type = Reflection::field_get(&value, &fd, receiver); + BasicType wide_type = (BasicType) wCode; + if (type != wide_type) { + Reflection::widen(&value, type, wide_type, CHECK_(value)); + } + return value; +JVM_END // should really be JVM_END, but that doesn't work for union types! + + +JVM_ENTRY(void, JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val)) + JVMWrapper("JVM_SetField"); + Handle field_mirror(thread, JNIHandles::resolve(field)); + Handle receiver (thread, JNIHandles::resolve(obj)); + oop box = JNIHandles::resolve(val); + fieldDescriptor fd; + Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); + BasicType field_type = fd.field_type(); + jvalue value; + BasicType value_type; + if (field_type == T_OBJECT || field_type == T_ARRAY) { + // 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); + Reflection::field_set(&value, &fd, receiver, field_type, CHECK); + } else { + value_type = Reflection::unbox_for_primitive(box, &value, CHECK); + Reflection::field_set(&value, &fd, receiver, value_type, CHECK); + } +JVM_END + + +JVM_ENTRY(void, JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, unsigned char vCode)) + JVMWrapper("JVM_SetPrimitiveField"); + Handle field_mirror(thread, JNIHandles::resolve(field)); + Handle receiver (thread, JNIHandles::resolve(obj)); + fieldDescriptor fd; + Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); + BasicType value_type = (BasicType) vCode; + Reflection::field_set(&v, &fd, receiver, value_type, CHECK); +JVM_END + + +// 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 + +#endif /* SUPPORT_OLD_REFLECTION */ + +// Atomic /////////////////////////////////////////////////////////////////////////////////////////// + +JVM_LEAF(jboolean, JVM_SupportsCX8()) + JVMWrapper("JVM_SupportsCX8"); + return VM_Version::supports_cx8(); +JVM_END + + +JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) + JVMWrapper("JVM_CX8Field"); + jlong res; + oop o = JNIHandles::resolve(obj); + intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); + volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); + + assert(VM_Version::supports_cx8(), "cx8 not supported"); + res = Atomic::cmpxchg(newVal, addr, oldVal); + + return res == oldVal; +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 + klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); + if (k != SystemDictionary::thread_klass()) { + THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); + } + + ResourceMark rm(THREAD); + + GrowableArray* thread_handle_array = new GrowableArray(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; + } + klassOop k = java_lang_Class::as_klassOop(mirror()); + if (!Klass::cast(k)->oop_is_instance()) { + return NULL; + } + instanceKlassHandle ik_h(THREAD, k); + int encl_method_class_idx = ik_h->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); + klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); + dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); + int encl_method_method_idx = ik_h->enclosing_method_method_index(); + if (encl_method_method_idx != 0) { + symbolOop sym_o = ik_h->constants()->symbol_at( + extract_low_short_from_int( + ik_h->constants()->name_and_type_at(encl_method_method_idx))); + symbolHandle sym(THREAD, sym_o); + Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); + dest->obj_at_put(1, str()); + sym_o = ik_h->constants()->symbol_at( + extract_high_short_from_int( + ik_h->constants()->name_and_type_at(encl_method_method_idx))); + sym = symbolHandle(THREAD, sym_o); + 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(jintArray, JVM_GetThreadStateValues(JNIEnv* env, + jint javaThreadState)) +{ + // If new thread states are added in future JDK and VM versions, + // this should check if the JDK version is compatible with thread + // states supported by the VM. Return NULL if not compatible. + // + // This function must map the VM java_lang_Thread::ThreadStatus + // to the Java thread state that the JDK supports. + // + + typeArrayHandle values_h; + switch (javaThreadState) { + case JAVA_THREAD_STATE_NEW : { + typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); + values_h = typeArrayHandle(THREAD, r); + values_h->int_at_put(0, java_lang_Thread::NEW); + break; + } + case JAVA_THREAD_STATE_RUNNABLE : { + typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); + values_h = typeArrayHandle(THREAD, r); + values_h->int_at_put(0, java_lang_Thread::RUNNABLE); + break; + } + case JAVA_THREAD_STATE_BLOCKED : { + typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); + values_h = typeArrayHandle(THREAD, r); + values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); + break; + } + case JAVA_THREAD_STATE_WAITING : { + typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); + values_h = typeArrayHandle(THREAD, r); + values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); + values_h->int_at_put(1, java_lang_Thread::PARKED); + break; + } + case JAVA_THREAD_STATE_TIMED_WAITING : { + typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); + values_h = typeArrayHandle(THREAD, r); + values_h->int_at_put(0, java_lang_Thread::SLEEPING); + values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); + values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); + break; + } + case JAVA_THREAD_STATE_TERMINATED : { + typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); + values_h = typeArrayHandle(THREAD, r); + values_h->int_at_put(0, java_lang_Thread::TERMINATED); + break; + } + default: + // Unknown state - probably incompatible JDK version + return NULL; + } + + return (jintArray) JNIHandles::make_local(env, values_h()); +} +JVM_END + + +JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, + jint javaThreadState, + jintArray values)) +{ + // If new thread states are added in future JDK and VM versions, + // this should check if the JDK version is compatible with thread + // states supported by the VM. Return NULL if not compatible. + // + // This function must map the VM java_lang_Thread::ThreadStatus + // to the Java thread state that the JDK supports. + // + + ResourceMark rm; + + // Check if threads is null + if (values == NULL) { + THROW_(vmSymbols::java_lang_NullPointerException(), 0); + } + + typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); + typeArrayHandle values_h(THREAD, v); + + objArrayHandle names_h; + switch (javaThreadState) { + case JAVA_THREAD_STATE_NEW : { + assert(values_h->length() == 1 && + values_h->int_at(0) == java_lang_Thread::NEW, + "Invalid threadStatus value"); + + objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), + 1, /* only 1 substate */ + CHECK_NULL); + names_h = objArrayHandle(THREAD, r); + Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); + names_h->obj_at_put(0, name()); + break; + } + case JAVA_THREAD_STATE_RUNNABLE : { + assert(values_h->length() == 1 && + values_h->int_at(0) == java_lang_Thread::RUNNABLE, + "Invalid threadStatus value"); + + objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), + 1, /* only 1 substate */ + CHECK_NULL); + names_h = objArrayHandle(THREAD, r); + Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); + names_h->obj_at_put(0, name()); + break; + } + case JAVA_THREAD_STATE_BLOCKED : { + assert(values_h->length() == 1 && + values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, + "Invalid threadStatus value"); + + objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), + 1, /* only 1 substate */ + CHECK_NULL); + names_h = objArrayHandle(THREAD, r); + Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); + names_h->obj_at_put(0, name()); + break; + } + case JAVA_THREAD_STATE_WAITING : { + assert(values_h->length() == 2 && + values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && + values_h->int_at(1) == java_lang_Thread::PARKED, + "Invalid threadStatus value"); + objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), + 2, /* number of substates */ + CHECK_NULL); + names_h = objArrayHandle(THREAD, r); + Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", + CHECK_NULL); + Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", + CHECK_NULL); + names_h->obj_at_put(0, name0()); + names_h->obj_at_put(1, name1()); + break; + } + case JAVA_THREAD_STATE_TIMED_WAITING : { + assert(values_h->length() == 3 && + values_h->int_at(0) == java_lang_Thread::SLEEPING && + values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && + values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, + "Invalid threadStatus value"); + objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), + 3, /* number of substates */ + CHECK_NULL); + names_h = objArrayHandle(THREAD, r); + Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", + CHECK_NULL); + Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", + CHECK_NULL); + Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", + CHECK_NULL); + names_h->obj_at_put(0, name0()); + names_h->obj_at_put(1, name1()); + names_h->obj_at_put(2, name2()); + break; + } + case JAVA_THREAD_STATE_TERMINATED : { + assert(values_h->length() == 1 && + values_h->int_at(0) == java_lang_Thread::TERMINATED, + "Invalid threadStatus value"); + objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), + 1, /* only 1 substate */ + CHECK_NULL); + names_h = objArrayHandle(THREAD, r); + Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); + names_h->obj_at_put(0, name()); + break; + } + default: + // Unknown state - probably incompatible JDK version + return NULL; + } + return (jobjectArray) JNIHandles::make_local(env, names_h()); +} +JVM_END + +JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) +{ + memset(info, 0, sizeof(info_size)); + + info->jvm_version = Abstract_VM_Version::jvm_version(); + info->update_version = 0; /* 0 in HotSpot Express VM */ + info->special_update_version = 0; /* 0 in HotSpot Express VM */ + + // 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(); +#ifdef KERNEL + info->is_kernel_jvm = 1; // true; +#else // KERNEL + info->is_kernel_jvm = 0; // false; +#endif // KERNEL +} +JVM_END