Mercurial > hg > icedtea8-forest > hotspot
view src/share/vm/runtime/statSampler.cpp @ 10905:f57189b7648d
8257192: Integrate AArch64 JIT port into 8u
7009641: Don't fail VM when CodeCache is full
8073108: [AArch64] Use x86 and SPARC CPU instructions for GHASH acceleration
8130309: Need to bailout cleanly if creation of stubs fails when codecache is out of space (AArch64 changes)
8131779: AARCH64: add Montgomery multiply intrinsic
8132875: AArch64: Fix error introduced into AArch64 CodeCache by commit for 8130309
8135018: AARCH64: Missing memory barriers for CMS collector
8145320: Create unsafe_arraycopy and generic_arraycopy for AArch64
8148328: aarch64: redundant lsr instructions in stub code.
8148783: aarch64: SEGV running SpecJBB2013
8148948: aarch64: generate_copy_longs calls align() incorrectly
8149080: AArch64: Recognise disjoint array copy in stub code
8149365: aarch64: memory copy does not prefetch on backwards copy
8149907: aarch64: use load/store pair instructions in call_stub
8150038: aarch64: make use of CBZ and CBNZ when comparing narrow pointer with zero
8150045: arraycopy causes segfaults in SATB during garbage collection
8150082: aarch64: optimise small array copy
8150229: aarch64: pipeline class for several instructions is not set correctly
8150313: aarch64: optimise array copy using SIMD instructions
8150394: aarch64: add support for 8.1 LSE CAS instructions
8150652: Remove unused code in AArch64 back end
8151340: aarch64: prefetch the destination word for write prior to ldxr/stxr loops.
8151502: optimize pd_disjoint_words and pd_conjoint_words
8151775: aarch64: add support for 8.1 LSE atomic operations
8152537: aarch64: Make use of CBZ and CBNZ when comparing unsigned values with zero.
8152840: aarch64: improve _unsafe_arraycopy stub routine
8153172: aarch64: hotspot crashes after the 8.1 LSE patch is merged
8153713: aarch64: improve short array clearing using store pair
8153797: aarch64: Add Arrays.fill stub code
8154413: AArch64: Better byte behaviour
8154537: AArch64: some integer rotate instructions are never emitted
8154739: AArch64: TemplateTable::fast_xaccess loads in wrong mode
8155015: Aarch64: bad assert in spill generation code
8155100: AArch64: Relax alignment requirement for byte_map_base
8155612: Aarch64: vector nodes need to support misaligned offset
8155617: aarch64: ClearArray does not use DC ZVA
8155627: Enable SA on AArch64
8155653: TestVectorUnalignedOffset.java not pushed with 8155612
8156731: aarch64: java/util/Arrays/Correct.java fails due to _generic_arraycopy stub routine
8157841: aarch64: prefetch ignores cache line size
8157906: aarch64: some more integer rotate instructions are never emitted
8158913: aarch64: SEGV running Spark terasort
8159052: aarch64: optimise unaligned copies in pd_disjoint_words and pd_conjoint_words
8159063: aarch64: optimise unaligned array copy long
8160748: [AArch64] Inconsistent types for ideal_reg
8161072: AArch64: jtreg compiler/uncommontrap/TestDeoptOOM failure
8161190: AArch64: Fix overflow in immediate cmp instruction
8164113: AArch64: follow-up the fix for 8161598
8165673: AArch64: Fix JNI floating point argument handling
8167200: AArch64: Broken stack pointer adjustment in interpreter
8167421: AArch64: in one core system, fatal error: Illegal threadstate encountered
8167595: AArch64: SEGV in stub code cipherBlockChaining_decryptAESCrypt
8168699: Validate special case invocations [AArch64 support]
8168888: Port 8160591: Improve internal array handling to AArch64.
8170100: AArch64: Crash in C1-compiled code accessing References
8170188: jtreg test compiler/types/TestMeetIncompatibleInterfaceArrays.java causes JVM crash
8170873: PPC64/aarch64: Poor StrictMath performance due to non-optimized compilation
8171537: aarch64: compiler/c1/Test6849574.java generates guarantee failure in C1
8172881: AArch64: assertion failure: the int pressure is incorrect
8173472: AArch64: C1 comparisons with null only use 32-bit instructions
8176100: [AArch64] [REDO][REDO] G1 Needs pre barrier on dereference of weak JNI handles
8177661: Correct ad rule output register types from iRegX to iRegXNoSp
8179954: AArch64: C1 and C2 volatile accesses are not sequentially consistent
8182581: aarch64: fix for crash caused by earlyret of compiled method
8183925: [AArch64] Decouple crash protection from watcher thread
8186325: AArch64: jtreg test hotspot/test/gc/g1/TestJNIWeakG1/TestJNIWeakG1.java SEGV
8187224: aarch64: some inconsistency between aarch64_ad.m4 and aarch64.ad
8189170: [AArch64] Add option to disable stack overflow checking in primordial thread for use with JNI_CreateJavaJVM
8193133: Assertion failure because 0xDEADDEAD can be in-heap
8195685: AArch64 port of 8174962: Better interface invocations
8195859: AArch64: vtableStubs gtest fails after 8174962
8196136: AArch64: Correct register use in patch for JDK-8194686
8196221: AArch64: Mistake in committed patch for JDK-8195859
8199712: [AArch64] Flight Recorder
8203481: Incorrect constraint for unextended_sp in frame:safe_for_sender
8203699: java/lang/invoke/SpecialInterfaceCall fails with SIGILL on aarch64
8205421: AARCH64: StubCodeMark should be placed after alignment
8206163: AArch64: incorrect code generation for StoreCM
8207345: Trampoline generation code reads from uninitialized memory
8207838: AArch64: Float registers incorrectly restored in JNI call
8209413: AArch64: NPE in clhsdb jstack command
8209414: [AArch64] method handle invocation does not respect JVMTI interp_only mode
8209415: Fix JVMTI test failure HS202
8209420: Track membars for volatile accesses so they can be properly optimized
8209835: Aarch64: elide barriers on all volatile operations
8210425: [AArch64] sharedRuntimeTrig/sharedRuntimeTrans compiled without optimization
8211064: [AArch64] Interpreter and c1 don't correctly handle jboolean results in native calls
8211233: MemBarNode::trailing_membar() and MemBarNode::leading_membar() need to handle dying subgraphs better
8213134: AArch64: vector shift failed with MaxVectorSize=8
8213419: [AArch64] C2 may hang in MulLNode::Ideal()/MulINode::Ideal() with gcc 8.2.1
8214857: "bad trailing membar" assert failure at memnode.cpp:3220
8215951: AArch64: jtreg test vmTestbase/nsk/jvmti/PopFrame/popframe005 segfaults
8215961: jdk/jfr/event/os/TestCPUInformation.java fails on AArch64
8216350: AArch64: monitor unlock fast path not called
8216989: CardTableBarrierSetAssembler::gen_write_ref_array_post_barrier() does not check for zero length on AARCH64
8217368: AArch64: C2 recursive stack locking optimisation not triggered
8218185: aarch64: missing LoadStore barrier in TemplateTable::putfield_or_static
8219011: Implement MacroAssembler::warn method on AArch64
8219635: aarch64: missing LoadStore barrier in TemplateTable::fast_storefield
8221220: AArch64: Add StoreStore membar explicitly for Volatile Writes in TemplateTable
8221658: aarch64: add necessary predicate for ubfx patterns
8224671: AArch64: mauve System.arraycopy test failure
8224828: aarch64: rflags is not correct after safepoint poll
8224851: AArch64: fix warnings and errors with Clang and GCC 8.3
8224880: AArch64: java/javac error with AllocatePrefetchDistance
8228400: Remove built-in AArch64 simulator
8228406: Superfluous change in chaitin.hpp
8228593: Revert explicit JDK 7 support additions
8228716: Revert InstanceKlass::print_on debug additions
8228718: Revert incorrect backport of JDK-8129757 to 8-aarch64
8228725: AArch64: Purge method call format support
8228747: Revert "unused" attribute from test_arraycopy_func
8228767: Revert ResourceMark additions
8228770: Revert development hsdis changes
8229123: Revert build fixes for aarch64/zero
8229124: Revert disassembler.cpp changes
8229145: Revert TemplateTable::bytecode() visibility change
8233839: aarch64: missing memory barrier in NewObjectArrayStub and NewTypeArrayStub
8237512: AArch64: aarch64TestHook leaks a BufferBlob
8246482: Build failures with +JFR -PCH
8247979: aarch64: missing side effect of killing flags for clearArray_reg_reg
8248219: aarch64: missing memory barrier in fast_storefield and fast_accessfield
Reviewed-by: shade, aph
author | andrew |
---|---|
date | Mon, 01 Feb 2021 03:48:36 +0000 |
parents | 1d1603768966 |
children |
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/* * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "classfile/systemDictionary.hpp" #include "classfile/vmSymbols.hpp" #include "memory/allocation.inline.hpp" #include "memory/resourceArea.hpp" #include "oops/oop.inline.hpp" #include "runtime/arguments.hpp" #include "runtime/java.hpp" #include "runtime/javaCalls.hpp" #include "runtime/os.hpp" #include "runtime/statSampler.hpp" #ifdef TARGET_ARCH_x86 # include "vm_version_x86.hpp" #endif #ifdef TARGET_ARCH_aarch64 # include "vm_version_aarch64.hpp" #endif #ifdef TARGET_ARCH_sparc # include "vm_version_sparc.hpp" #endif #ifdef TARGET_ARCH_zero # include "vm_version_zero.hpp" #endif #ifdef TARGET_ARCH_arm # include "vm_version_arm.hpp" #endif #ifdef TARGET_ARCH_ppc # include "vm_version_ppc.hpp" #endif // -------------------------------------------------------- // StatSamplerTask class StatSamplerTask : public PeriodicTask { public: StatSamplerTask(int interval_time) : PeriodicTask(interval_time) {} void task() { StatSampler::collect_sample(); } }; //---------------------------------------------------------- // Implementation of StatSampler StatSamplerTask* StatSampler::_task = NULL; PerfDataList* StatSampler::_sampled = NULL; /* * the initialize method is called from the engage() method * and is responsible for initializing various global variables. */ void StatSampler::initialize() { if (!UsePerfData) return; // create performance data that could not be created prior // to vm_init_globals() or otherwise have no logical home. create_misc_perfdata(); // get copy of the sampled list _sampled = PerfDataManager::sampled(); } /* * The engage() method is called at initialization time via * Thread::create_vm() to initialize the StatSampler and * register it with the WatcherThread as a periodic task. */ void StatSampler::engage() { if (!UsePerfData) return; if (!is_active()) { initialize(); // start up the periodic task _task = new StatSamplerTask(PerfDataSamplingInterval); _task->enroll(); } } /* * the disengage() method is responsible for deactivating the periodic * task and, if logging was enabled, for logging the final sample. This * method is called from before_exit() in java.cpp and is only called * after the WatcherThread has been stopped. */ void StatSampler::disengage() { if (!UsePerfData) return; if (!is_active()) return; // remove StatSamplerTask _task->disenroll(); delete _task; _task = NULL; // force a final sample sample_data(_sampled); } /* * the destroy method is responsible for releasing any resources used by * the StatSampler prior to shutdown of the VM. this method is called from * before_exit() in java.cpp and is only called after the WatcherThread * has stopped. */ void StatSampler::destroy() { if (!UsePerfData) return; if (_sampled != NULL) { delete(_sampled); _sampled = NULL; } } /* * The sample_data() method is responsible for sampling the * the data value for each PerfData instance in the given list. */ void StatSampler::sample_data(PerfDataList* list) { assert(list != NULL, "null list unexpected"); for (int index = 0; index < list->length(); index++) { PerfData* item = list->at(index); item->sample(); } } /* * the collect_sample() method is the method invoked by the * WatcherThread via the PeriodicTask::task() method. This method * is responsible for collecting data samples from sampled * PerfData instances every PerfDataSamplingInterval milliseconds. * It is also responsible for logging the requested set of * PerfData instances every _sample_count milliseconds. While * logging data, it will output a column header after every _print_header * rows of data have been logged. */ void StatSampler::collect_sample() { // future - check for new PerfData objects. PerfData objects might // get added to the PerfDataManager lists after we have already // built our local copies. // // if (PerfDataManager::count() > previous) { // // get a new copy of the sampled list // if (_sampled != NULL) { // delete(_sampled); // _sampled = NULL; // } // _sampled = PerfDataManager::sampled(); // } assert(_sampled != NULL, "list not initialized"); sample_data(_sampled); } /* * method to upcall into Java to return the value of the specified * property as a utf8 string, or NULL if does not exist. The caller * is responsible for setting a ResourceMark for proper cleanup of * the utf8 strings. */ const char* StatSampler::get_system_property(const char* name, TRAPS) { // setup the arguments to getProperty Handle key_str = java_lang_String::create_from_str(name, CHECK_NULL); // return value JavaValue result(T_OBJECT); // public static String getProperty(String key, String def); JavaCalls::call_static(&result, KlassHandle(THREAD, SystemDictionary::System_klass()), vmSymbols::getProperty_name(), vmSymbols::string_string_signature(), key_str, CHECK_NULL); oop value_oop = (oop)result.get_jobject(); if (value_oop == NULL) { return NULL; } // convert Java String to utf8 string char* value = java_lang_String::as_utf8_string(value_oop); return value; } /* * The list of System Properties that have corresponding PerfData * string instrumentation created by retrieving the named property's * value from System.getProperty() and unconditionally creating a * PerfStringConstant object initialized to the retreived value. This * is not an exhustive list of Java properties with corresponding string * instrumentation as the create_system_property_instrumentation() method * creates other property based instrumentation conditionally. */ // stable interface, supported counters static const char* property_counters_ss[] = { "java.vm.specification.version", "java.vm.specification.name", "java.vm.specification.vendor", "java.vm.version", "java.vm.name", "java.vm.vendor", "java.vm.info", "java.library.path", "java.class.path", "java.endorsed.dirs", "java.ext.dirs", "java.version", "java.home", NULL }; // unstable interface, supported counters static const char* property_counters_us[] = { NULL }; // unstable interface, unsupported counters static const char* property_counters_uu[] = { "sun.boot.class.path", "sun.boot.library.path", NULL }; typedef struct { const char** property_list; CounterNS name_space; } PropertyCounters; static PropertyCounters property_counters[] = { { property_counters_ss, JAVA_PROPERTY }, { property_counters_us, COM_PROPERTY }, { property_counters_uu, SUN_PROPERTY }, { NULL, SUN_PROPERTY } }; /* * Method to create PerfData string instruments that contain the values * of various system properties. String instruments are created for each * property specified in the property lists provided in property_counters[]. * Property counters have a counter name space prefix prepended to the * property name as indicated in property_counters[]. */ void StatSampler::create_system_property_instrumentation(TRAPS) { ResourceMark rm; for (int i = 0; property_counters[i].property_list != NULL; i++) { for (int j = 0; property_counters[i].property_list[j] != NULL; j++) { const char* property_name = property_counters[i].property_list[j]; assert(property_name != NULL, "property name should not be NULL"); const char* value = get_system_property(property_name, CHECK); // the property must exist assert(value != NULL, "property name should be valid"); if (value != NULL) { // create the property counter PerfDataManager::create_string_constant(property_counters[i].name_space, property_name, value, CHECK); } } } } /* * The create_misc_perfdata() method provides a place to create * PerfData instances that would otherwise have no better place * to exist. */ void StatSampler::create_misc_perfdata() { ResourceMark rm; EXCEPTION_MARK; // numeric constants // frequency of the native high resolution timer PerfDataManager::create_constant(SUN_OS, "hrt.frequency", PerfData::U_Hertz, os::elapsed_frequency(), CHECK); // string constants // create string instrumentation for various Java properties. create_system_property_instrumentation(CHECK); // hotspot flags (from .hotspotrc) and args (from command line) // PerfDataManager::create_string_constant(JAVA_RT, "vmFlags", Arguments::jvm_flags(), CHECK); PerfDataManager::create_string_constant(JAVA_RT, "vmArgs", Arguments::jvm_args(), CHECK); // java class name/jar file and arguments to main class // note: name is cooridnated with launcher and Arguments.cpp PerfDataManager::create_string_constant(SUN_RT, "javaCommand", Arguments::java_command(), CHECK); // the Java VM Internal version string PerfDataManager::create_string_constant(SUN_RT, "internalVersion", VM_Version::internal_vm_info_string(), CHECK); // create sampled instrumentation objects create_sampled_perfdata(); } /* * helper class to provide for sampling of the elapsed_counter value * maintained in the OS class. */ class HighResTimeSampler : public PerfSampleHelper { public: jlong take_sample() { return os::elapsed_counter(); } }; /* * the create_sampled_perdata() method provides a place to instantiate * sampled PerfData instances that would otherwise have no better place * to exist. */ void StatSampler::create_sampled_perfdata() { EXCEPTION_MARK; // setup sampling of the elapsed time counter maintained in the // the os class. This counter can be used as either a time stamp // for each logged entry or as a liveness indicator for the VM. PerfSampleHelper* psh = new HighResTimeSampler(); PerfDataManager::create_counter(SUN_OS, "hrt.ticks", PerfData::U_Ticks, psh, CHECK); } /* * the statSampler_exit() function is called from os_init.cpp on * exit of the vm. */ void statSampler_exit() { if (!UsePerfData) return; StatSampler::destroy(); }