Mercurial > hg > graal-compiler
view src/share/vm/services/management.hpp @ 10185:d50cc62e94ff
8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t
Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime.
Reviewed-by: twisti, johnc
Contributed-by: Martin Doerr <martin.doerr@sap.com>
author | johnc |
---|---|
date | Wed, 24 Apr 2013 14:48:43 -0700 |
parents | fb19af007ffc |
children | 31a4e55f8c9d |
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/* * Copyright (c) 2003, 2012, 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. * */ #ifndef SHARE_VM_SERVICES_MANAGEMENT_HPP #define SHARE_VM_SERVICES_MANAGEMENT_HPP #include "memory/allocation.hpp" #include "runtime/handles.hpp" #include "runtime/timer.hpp" #include "services/jmm.h" class OopClosure; class ThreadSnapshot; class Management : public AllStatic { private: static PerfVariable* _begin_vm_creation_time; static PerfVariable* _end_vm_creation_time; static PerfVariable* _vm_init_done_time; static jmmOptionalSupport _optional_support; static TimeStamp _stamp; // Timestamp since vm init done time // Management klasses static Klass* _sensor_klass; static Klass* _threadInfo_klass; static Klass* _memoryUsage_klass; static Klass* _memoryPoolMXBean_klass; static Klass* _memoryManagerMXBean_klass; static Klass* _garbageCollectorMXBean_klass; static Klass* _managementFactory_klass; static Klass* _garbageCollectorImpl_klass; static Klass* _gcInfo_klass; static Klass* load_and_initialize_klass(Symbol* sh, TRAPS); public: static void init(); static void initialize(TRAPS); static jlong ticks_to_ms(jlong ticks) NOT_MANAGEMENT_RETURN_(0L); static jlong timestamp() NOT_MANAGEMENT_RETURN_(0L); static void oops_do(OopClosure* f) NOT_MANAGEMENT_RETURN; static void* get_jmm_interface(int version); static void get_optional_support(jmmOptionalSupport* support); static void get_loaded_classes(JavaThread* cur_thread, GrowableArray<KlassHandle>* klass_handle_array); static void record_vm_startup_time(jlong begin, jlong duration) NOT_MANAGEMENT_RETURN; static void record_vm_init_completed() { // Initialize the timestamp to get the current time _vm_init_done_time->set_value(os::javaTimeMillis()); // Update the timestamp to the vm init done time _stamp.update(); } static jlong begin_vm_creation_time() { return _begin_vm_creation_time->get_value(); } static jlong vm_init_done_time() { return _vm_init_done_time->get_value(); } // methods to return a Klass*. static Klass* java_lang_management_ThreadInfo_klass(TRAPS); static Klass* java_lang_management_MemoryUsage_klass(TRAPS) NOT_MANAGEMENT_RETURN_(NULL); static Klass* java_lang_management_MemoryPoolMXBean_klass(TRAPS); static Klass* java_lang_management_MemoryManagerMXBean_klass(TRAPS); static Klass* java_lang_management_GarbageCollectorMXBean_klass(TRAPS); static Klass* sun_management_Sensor_klass(TRAPS) NOT_MANAGEMENT_RETURN_(NULL); static Klass* sun_management_ManagementFactory_klass(TRAPS) NOT_MANAGEMENT_RETURN_(NULL); static Klass* sun_management_GarbageCollectorImpl_klass(TRAPS) NOT_MANAGEMENT_RETURN_(NULL); static Klass* com_sun_management_GcInfo_klass(TRAPS) NOT_MANAGEMENT_RETURN_(NULL); static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, TRAPS); static instanceOop create_thread_info_instance(ThreadSnapshot* snapshot, objArrayHandle monitors_array, typeArrayHandle depths_array, objArrayHandle synchronizers_array, TRAPS); }; class TraceVmCreationTime : public StackObj { private: TimeStamp _timer; jlong _begin_time; public: TraceVmCreationTime() {} ~TraceVmCreationTime() {} void start() { _timer.update_to(0); _begin_time = os::javaTimeMillis(); } /** * Only call this if initialization completes successfully; it will * crash if PerfMemory_exit() has already been called (usually by * os::shutdown() when there was an initialization failure). */ void end() { Management::record_vm_startup_time(_begin_time, _timer.milliseconds()); } }; #endif // SHARE_VM_SERVICES_MANAGEMENT_HPP