| /* |
| * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "aot/aotLoader.hpp" |
| #include "classfile/classLoader.hpp" |
| #include "classfile/stringTable.hpp" |
| #include "classfile/systemDictionary.hpp" |
| #include "code/codeCache.hpp" |
| #include "compiler/compileBroker.hpp" |
| #include "compiler/compilerOracle.hpp" |
| #include "gc/shared/genCollectedHeap.hpp" |
| #include "interpreter/bytecodeHistogram.hpp" |
| #if INCLUDE_JVMCI |
| #include "jvmci/jvmciCompiler.hpp" |
| #include "jvmci/jvmciRuntime.hpp" |
| #endif |
| #include "logging/log.hpp" |
| #include "logging/logStream.hpp" |
| #include "memory/oopFactory.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "memory/universe.hpp" |
| #include "oops/constantPool.hpp" |
| #include "oops/generateOopMap.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "oops/instanceOop.hpp" |
| #include "oops/method.hpp" |
| #include "oops/objArrayOop.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "oops/symbol.hpp" |
| #include "prims/jvm.h" |
| #include "prims/jvmtiExport.hpp" |
| #include "runtime/arguments.hpp" |
| #include "runtime/biasedLocking.hpp" |
| #include "runtime/compilationPolicy.hpp" |
| #include "runtime/deoptimization.hpp" |
| #include "runtime/init.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/java.hpp" |
| #include "runtime/memprofiler.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "runtime/statSampler.hpp" |
| #include "runtime/sweeper.hpp" |
| #include "runtime/task.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/timer.hpp" |
| #include "runtime/vm_operations.hpp" |
| #include "services/memTracker.hpp" |
| #include "trace/traceMacros.hpp" |
| #include "trace/tracing.hpp" |
| #include "utilities/dtrace.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| #include "utilities/histogram.hpp" |
| #include "utilities/macros.hpp" |
| #include "utilities/vmError.hpp" |
| #if INCLUDE_ALL_GCS |
| #include "gc/cms/concurrentMarkSweepThread.hpp" |
| #include "gc/parallel/psScavenge.hpp" |
| #endif // INCLUDE_ALL_GCS |
| #ifdef COMPILER1 |
| #include "c1/c1_Compiler.hpp" |
| #include "c1/c1_Runtime1.hpp" |
| #endif |
| #ifdef COMPILER2 |
| #include "code/compiledIC.hpp" |
| #include "compiler/methodLiveness.hpp" |
| #include "opto/compile.hpp" |
| #include "opto/indexSet.hpp" |
| #include "opto/runtime.hpp" |
| #endif |
| |
| GrowableArray<Method*>* collected_profiled_methods; |
| |
| int compare_methods(Method** a, Method** b) { |
| // %%% there can be 32-bit overflow here |
| return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) |
| - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); |
| } |
| |
| void collect_profiled_methods(Method* m) { |
| Thread* thread = Thread::current(); |
| methodHandle mh(thread, m); |
| if ((m->method_data() != NULL) && |
| (PrintMethodData || CompilerOracle::should_print(mh))) { |
| collected_profiled_methods->push(m); |
| } |
| } |
| |
| void print_method_profiling_data() { |
| if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData) && |
| (PrintMethodData || CompilerOracle::should_print_methods())) { |
| ResourceMark rm; |
| HandleMark hm; |
| collected_profiled_methods = new GrowableArray<Method*>(1024); |
| SystemDictionary::methods_do(collect_profiled_methods); |
| collected_profiled_methods->sort(&compare_methods); |
| |
| int count = collected_profiled_methods->length(); |
| int total_size = 0; |
| if (count > 0) { |
| for (int index = 0; index < count; index++) { |
| Method* m = collected_profiled_methods->at(index); |
| ttyLocker ttyl; |
| tty->print_cr("------------------------------------------------------------------------"); |
| m->print_invocation_count(); |
| tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); |
| tty->cr(); |
| // Dump data on parameters if any |
| if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) { |
| tty->fill_to(2); |
| m->method_data()->parameters_type_data()->print_data_on(tty); |
| } |
| m->print_codes(); |
| total_size += m->method_data()->size_in_bytes(); |
| } |
| tty->print_cr("------------------------------------------------------------------------"); |
| tty->print_cr("Total MDO size: %d bytes", total_size); |
| } |
| } |
| } |
| |
| |
| #ifndef PRODUCT |
| |
| // Statistics printing (method invocation histogram) |
| |
| GrowableArray<Method*>* collected_invoked_methods; |
| |
| void collect_invoked_methods(Method* m) { |
| if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { |
| collected_invoked_methods->push(m); |
| } |
| } |
| |
| |
| |
| |
| void print_method_invocation_histogram() { |
| ResourceMark rm; |
| HandleMark hm; |
| collected_invoked_methods = new GrowableArray<Method*>(1024); |
| SystemDictionary::methods_do(collect_invoked_methods); |
| collected_invoked_methods->sort(&compare_methods); |
| // |
| tty->cr(); |
| tty->print_cr("Histogram Over Method Invocation Counters (cutoff = " INTX_FORMAT "):", MethodHistogramCutoff); |
| tty->cr(); |
| tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); |
| unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, |
| synch_total = 0, nativ_total = 0, acces_total = 0; |
| for (int index = 0; index < collected_invoked_methods->length(); index++) { |
| Method* m = collected_invoked_methods->at(index); |
| int c = m->invocation_count() + m->compiled_invocation_count(); |
| if (c >= MethodHistogramCutoff) m->print_invocation_count(); |
| int_total += m->invocation_count(); |
| comp_total += m->compiled_invocation_count(); |
| if (m->is_final()) final_total += c; |
| if (m->is_static()) static_total += c; |
| if (m->is_synchronized()) synch_total += c; |
| if (m->is_native()) nativ_total += c; |
| if (m->is_accessor()) acces_total += c; |
| } |
| tty->cr(); |
| total = int_total + comp_total; |
| tty->print_cr("Invocations summary:"); |
| tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); |
| tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); |
| tty->print_cr("\t%9d (100%%) total", total); |
| tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); |
| tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); |
| tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); |
| tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); |
| tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); |
| tty->cr(); |
| SharedRuntime::print_call_statistics(comp_total); |
| } |
| |
| void print_bytecode_count() { |
| if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { |
| tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); |
| } |
| } |
| |
| AllocStats alloc_stats; |
| |
| |
| |
| // General statistics printing (profiling ...) |
| void print_statistics() { |
| #ifdef ASSERT |
| |
| if (CountRuntimeCalls) { |
| extern Histogram *RuntimeHistogram; |
| RuntimeHistogram->print(); |
| } |
| |
| if (CountJNICalls) { |
| extern Histogram *JNIHistogram; |
| JNIHistogram->print(); |
| } |
| |
| if (CountJVMCalls) { |
| extern Histogram *JVMHistogram; |
| JVMHistogram->print(); |
| } |
| |
| #endif |
| |
| if (MemProfiling) { |
| MemProfiler::disengage(); |
| } |
| |
| if (CITime) { |
| CompileBroker::print_times(); |
| } |
| |
| #ifdef COMPILER1 |
| if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { |
| FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); |
| Runtime1::print_statistics(); |
| Deoptimization::print_statistics(); |
| SharedRuntime::print_statistics(); |
| } |
| #endif /* COMPILER1 */ |
| |
| #ifdef COMPILER2 |
| if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { |
| FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); |
| Compile::print_statistics(); |
| #ifndef COMPILER1 |
| Deoptimization::print_statistics(); |
| SharedRuntime::print_statistics(); |
| #endif //COMPILER1 |
| os::print_statistics(); |
| } |
| |
| if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { |
| OptoRuntime::print_named_counters(); |
| } |
| |
| if (TimeLivenessAnalysis) { |
| MethodLiveness::print_times(); |
| } |
| #ifdef ASSERT |
| if (CollectIndexSetStatistics) { |
| IndexSet::print_statistics(); |
| } |
| #endif // ASSERT |
| #else |
| #ifdef INCLUDE_JVMCI |
| #ifndef COMPILER1 |
| if ((TraceDeoptimization || LogVMOutput || LogCompilation) && UseCompiler) { |
| FlagSetting fs(DisplayVMOutput, DisplayVMOutput && TraceDeoptimization); |
| Deoptimization::print_statistics(); |
| SharedRuntime::print_statistics(); |
| } |
| #endif |
| #endif |
| #endif |
| |
| if (PrintAOTStatistics) { |
| AOTLoader::print_statistics(); |
| } |
| |
| if (PrintNMethodStatistics) { |
| nmethod::print_statistics(); |
| } |
| if (CountCompiledCalls) { |
| print_method_invocation_histogram(); |
| } |
| |
| print_method_profiling_data(); |
| |
| if (TimeCompilationPolicy) { |
| CompilationPolicy::policy()->print_time(); |
| } |
| if (TimeOopMap) { |
| GenerateOopMap::print_time(); |
| } |
| if (ProfilerCheckIntervals) { |
| PeriodicTask::print_intervals(); |
| } |
| if (PrintSymbolTableSizeHistogram) { |
| SymbolTable::print_histogram(); |
| } |
| if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { |
| BytecodeCounter::print(); |
| } |
| if (PrintBytecodePairHistogram) { |
| BytecodePairHistogram::print(); |
| } |
| |
| if (PrintCodeCache) { |
| MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
| CodeCache::print(); |
| } |
| |
| if (PrintMethodFlushingStatistics) { |
| NMethodSweeper::print(); |
| } |
| |
| if (PrintCodeCache2) { |
| MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
| CodeCache::print_internals(); |
| } |
| |
| if (PrintVtableStats) { |
| klassVtable::print_statistics(); |
| klassItable::print_statistics(); |
| } |
| if (VerifyOops) { |
| tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); |
| } |
| |
| print_bytecode_count(); |
| if (PrintMallocStatistics) { |
| tty->print("allocation stats: "); |
| alloc_stats.print(); |
| tty->cr(); |
| } |
| |
| if (PrintSystemDictionaryAtExit) { |
| SystemDictionary::print(); |
| } |
| |
| if (LogTouchedMethods && PrintTouchedMethodsAtExit) { |
| Method::print_touched_methods(tty); |
| } |
| |
| if (PrintBiasedLockingStatistics) { |
| BiasedLocking::print_counters(); |
| } |
| |
| // Native memory tracking data |
| if (PrintNMTStatistics) { |
| MemTracker::final_report(tty); |
| } |
| } |
| |
| #else // PRODUCT MODE STATISTICS |
| |
| void print_statistics() { |
| |
| if (PrintMethodData) { |
| print_method_profiling_data(); |
| } |
| |
| if (CITime) { |
| CompileBroker::print_times(); |
| } |
| |
| if (PrintCodeCache) { |
| MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
| CodeCache::print(); |
| } |
| |
| if (PrintMethodFlushingStatistics) { |
| NMethodSweeper::print(); |
| } |
| |
| #ifdef COMPILER2 |
| if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { |
| OptoRuntime::print_named_counters(); |
| } |
| #endif |
| if (PrintBiasedLockingStatistics) { |
| BiasedLocking::print_counters(); |
| } |
| |
| // Native memory tracking data |
| if (PrintNMTStatistics) { |
| MemTracker::final_report(tty); |
| } |
| |
| if (LogTouchedMethods && PrintTouchedMethodsAtExit) { |
| Method::print_touched_methods(tty); |
| } |
| } |
| |
| #endif |
| |
| // Note: before_exit() can be executed only once, if more than one threads |
| // are trying to shutdown the VM at the same time, only one thread |
| // can run before_exit() and all other threads must wait. |
| void before_exit(JavaThread* thread) { |
| #define BEFORE_EXIT_NOT_RUN 0 |
| #define BEFORE_EXIT_RUNNING 1 |
| #define BEFORE_EXIT_DONE 2 |
| static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; |
| |
| // Note: don't use a Mutex to guard the entire before_exit(), as |
| // JVMTI post_thread_end_event and post_vm_death_event will run native code. |
| // A CAS or OSMutex would work just fine but then we need to manipulate |
| // thread state for Safepoint. Here we use Monitor wait() and notify_all() |
| // for synchronization. |
| { MutexLocker ml(BeforeExit_lock); |
| switch (_before_exit_status) { |
| case BEFORE_EXIT_NOT_RUN: |
| _before_exit_status = BEFORE_EXIT_RUNNING; |
| break; |
| case BEFORE_EXIT_RUNNING: |
| while (_before_exit_status == BEFORE_EXIT_RUNNING) { |
| BeforeExit_lock->wait(); |
| } |
| assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); |
| return; |
| case BEFORE_EXIT_DONE: |
| // need block to avoid SS compiler bug |
| { |
| return; |
| } |
| } |
| } |
| |
| #if INCLUDE_JVMCI |
| // We are not using CATCH here because we want the exit to continue normally. |
| Thread* THREAD = thread; |
| JVMCIRuntime::shutdown(THREAD); |
| if (HAS_PENDING_EXCEPTION) { |
| HandleMark hm(THREAD); |
| Handle exception(THREAD, PENDING_EXCEPTION); |
| CLEAR_PENDING_EXCEPTION; |
| java_lang_Throwable::java_printStackTrace(exception, THREAD); |
| } |
| #endif |
| |
| // Hang forever on exit if we're reporting an error. |
| if (ShowMessageBoxOnError && VMError::is_error_reported()) { |
| os::infinite_sleep(); |
| } |
| |
| EventThreadEnd event; |
| if (event.should_commit()) { |
| event.set_thread(THREAD_TRACE_ID(thread)); |
| event.commit(); |
| } |
| |
| TRACE_VM_EXIT(); |
| |
| // Stop the WatcherThread. We do this before disenrolling various |
| // PeriodicTasks to reduce the likelihood of races. |
| if (PeriodicTask::num_tasks() > 0) { |
| WatcherThread::stop(); |
| } |
| |
| // shut down the StatSampler task |
| StatSampler::disengage(); |
| StatSampler::destroy(); |
| |
| // Stop concurrent GC threads |
| Universe::heap()->stop(); |
| |
| // Print GC/heap related information. |
| Log(gc, heap, exit) log; |
| if (log.is_info()) { |
| ResourceMark rm; |
| LogStream ls_info(log.info()); |
| Universe::print_on(&ls_info); |
| if (log.is_trace()) { |
| LogStream ls_trace(log.trace()); |
| ClassLoaderDataGraph::dump_on(&ls_trace); |
| } |
| } |
| |
| if (PrintBytecodeHistogram) { |
| BytecodeHistogram::print(); |
| } |
| |
| if (JvmtiExport::should_post_thread_life()) { |
| JvmtiExport::post_thread_end(thread); |
| } |
| |
| // Always call even when there are not JVMTI environments yet, since environments |
| // may be attached late and JVMTI must track phases of VM execution |
| JvmtiExport::post_vm_death(); |
| Threads::shutdown_vm_agents(); |
| |
| // Terminate the signal thread |
| // Note: we don't wait until it actually dies. |
| os::terminate_signal_thread(); |
| |
| print_statistics(); |
| Universe::heap()->print_tracing_info(); |
| |
| { MutexLocker ml(BeforeExit_lock); |
| _before_exit_status = BEFORE_EXIT_DONE; |
| BeforeExit_lock->notify_all(); |
| } |
| |
| if (VerifyStringTableAtExit) { |
| int fail_cnt = 0; |
| { |
| MutexLocker ml(StringTable_lock); |
| fail_cnt = StringTable::verify_and_compare_entries(); |
| } |
| |
| if (fail_cnt != 0) { |
| tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); |
| guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); |
| } |
| } |
| |
| #undef BEFORE_EXIT_NOT_RUN |
| #undef BEFORE_EXIT_RUNNING |
| #undef BEFORE_EXIT_DONE |
| } |
| |
| void vm_exit(int code) { |
| Thread* thread = |
| ThreadLocalStorage::is_initialized() ? Thread::current_or_null() : NULL; |
| if (thread == NULL) { |
| // very early initialization failure -- just exit |
| vm_direct_exit(code); |
| } |
| |
| if (VMThread::vm_thread() != NULL) { |
| // Fire off a VM_Exit operation to bring VM to a safepoint and exit |
| VM_Exit op(code); |
| if (thread->is_Java_thread()) |
| ((JavaThread*)thread)->set_thread_state(_thread_in_vm); |
| VMThread::execute(&op); |
| // should never reach here; but in case something wrong with VM Thread. |
| vm_direct_exit(code); |
| } else { |
| // VM thread is gone, just exit |
| vm_direct_exit(code); |
| } |
| ShouldNotReachHere(); |
| } |
| |
| void notify_vm_shutdown() { |
| // For now, just a dtrace probe. |
| HOTSPOT_VM_SHUTDOWN(); |
| HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); |
| } |
| |
| void vm_direct_exit(int code) { |
| notify_vm_shutdown(); |
| os::wait_for_keypress_at_exit(); |
| os::exit(code); |
| } |
| |
| void vm_perform_shutdown_actions() { |
| // Warning: do not call 'exit_globals()' here. All threads are still running. |
| // Calling 'exit_globals()' will disable thread-local-storage and cause all |
| // kinds of assertions to trigger in debug mode. |
| if (is_init_completed()) { |
| Thread* thread = Thread::current_or_null(); |
| if (thread != NULL && thread->is_Java_thread()) { |
| // We are leaving the VM, set state to native (in case any OS exit |
| // handlers call back to the VM) |
| JavaThread* jt = (JavaThread*)thread; |
| // Must always be walkable or have no last_Java_frame when in |
| // thread_in_native |
| jt->frame_anchor()->make_walkable(jt); |
| jt->set_thread_state(_thread_in_native); |
| } |
| } |
| notify_vm_shutdown(); |
| } |
| |
| void vm_shutdown() |
| { |
| vm_perform_shutdown_actions(); |
| os::wait_for_keypress_at_exit(); |
| os::shutdown(); |
| } |
| |
| void vm_abort(bool dump_core) { |
| vm_perform_shutdown_actions(); |
| os::wait_for_keypress_at_exit(); |
| |
| // Flush stdout and stderr before abort. |
| fflush(stdout); |
| fflush(stderr); |
| |
| os::abort(dump_core); |
| ShouldNotReachHere(); |
| } |
| |
| void vm_notify_during_shutdown(const char* error, const char* message) { |
| if (error != NULL) { |
| tty->print_cr("Error occurred during initialization of VM"); |
| tty->print("%s", error); |
| if (message != NULL) { |
| tty->print_cr(": %s", message); |
| } |
| else { |
| tty->cr(); |
| } |
| } |
| if (ShowMessageBoxOnError && WizardMode) { |
| fatal("Error occurred during initialization of VM"); |
| } |
| } |
| |
| void vm_exit_during_initialization() { |
| vm_notify_during_shutdown(NULL, NULL); |
| |
| // Failure during initialization, we don't want to dump core |
| vm_abort(false); |
| } |
| |
| void vm_exit_during_initialization(Handle exception) { |
| tty->print_cr("Error occurred during initialization of VM"); |
| // If there are exceptions on this thread it must be cleared |
| // first and here. Any future calls to EXCEPTION_MARK requires |
| // that no pending exceptions exist. |
| Thread *THREAD = Thread::current(); // can't be NULL |
| if (HAS_PENDING_EXCEPTION) { |
| CLEAR_PENDING_EXCEPTION; |
| } |
| java_lang_Throwable::print_stack_trace(exception, tty); |
| tty->cr(); |
| vm_notify_during_shutdown(NULL, NULL); |
| |
| // Failure during initialization, we don't want to dump core |
| vm_abort(false); |
| } |
| |
| void vm_exit_during_initialization(Symbol* ex, const char* message) { |
| ResourceMark rm; |
| vm_notify_during_shutdown(ex->as_C_string(), message); |
| |
| // Failure during initialization, we don't want to dump core |
| vm_abort(false); |
| } |
| |
| void vm_exit_during_initialization(const char* error, const char* message) { |
| vm_notify_during_shutdown(error, message); |
| |
| // Failure during initialization, we don't want to dump core |
| vm_abort(false); |
| } |
| |
| void vm_shutdown_during_initialization(const char* error, const char* message) { |
| vm_notify_during_shutdown(error, message); |
| vm_shutdown(); |
| } |
| |
| JDK_Version JDK_Version::_current; |
| const char* JDK_Version::_runtime_name; |
| const char* JDK_Version::_runtime_version; |
| |
| void JDK_Version::initialize() { |
| jdk_version_info info; |
| assert(!_current.is_valid(), "Don't initialize twice"); |
| |
| void *lib_handle = os::native_java_library(); |
| jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, |
| os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); |
| |
| assert(func != NULL, "Support for JDK 1.5 or older has been removed after JEP-223"); |
| |
| (*func)(&info, sizeof(info)); |
| |
| int major = JDK_VERSION_MAJOR(info.jdk_version); |
| int minor = JDK_VERSION_MINOR(info.jdk_version); |
| int security = JDK_VERSION_SECURITY(info.jdk_version); |
| int build = JDK_VERSION_BUILD(info.jdk_version); |
| |
| // Incompatible with pre-4243978 JDK. |
| if (info.pending_list_uses_discovered_field == 0) { |
| vm_exit_during_initialization( |
| "Incompatible JDK is not using Reference.discovered field for pending list"); |
| } |
| _current = JDK_Version(major, minor, security, info.patch_version, build, |
| info.thread_park_blocker == 1, |
| info.post_vm_init_hook_enabled == 1); |
| } |
| |
| void JDK_Version_init() { |
| JDK_Version::initialize(); |
| } |
| |
| static int64_t encode_jdk_version(const JDK_Version& v) { |
| return |
| ((int64_t)v.major_version() << (BitsPerByte * 4)) | |
| ((int64_t)v.minor_version() << (BitsPerByte * 3)) | |
| ((int64_t)v.security_version() << (BitsPerByte * 2)) | |
| ((int64_t)v.patch_version() << (BitsPerByte * 1)) | |
| ((int64_t)v.build_number() << (BitsPerByte * 0)); |
| } |
| |
| int JDK_Version::compare(const JDK_Version& other) const { |
| assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); |
| uint64_t e = encode_jdk_version(*this); |
| uint64_t o = encode_jdk_version(other); |
| return (e > o) ? 1 : ((e == o) ? 0 : -1); |
| } |
| |
| void JDK_Version::to_string(char* buffer, size_t buflen) const { |
| assert(buffer && buflen > 0, "call with useful buffer"); |
| size_t index = 0; |
| |
| if (!is_valid()) { |
| jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); |
| } else { |
| int rc = jio_snprintf( |
| &buffer[index], buflen - index, "%d.%d", _major, _minor); |
| if (rc == -1) return; |
| index += rc; |
| if (_security > 0) { |
| rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _security); |
| if (rc == -1) return; |
| index += rc; |
| } |
| if (_patch > 0) { |
| rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _patch); |
| if (rc == -1) return; |
| index += rc; |
| } |
| if (_build > 0) { |
| rc = jio_snprintf(&buffer[index], buflen - index, "+%d", _build); |
| if (rc == -1) return; |
| index += rc; |
| } |
| } |
| } |