Mercurial > hg > graal-compiler
view src/share/vm/prims/jvmtiTrace.hpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
author | tonyp |
---|---|
date | Wed, 19 Jan 2011 09:35:17 -0500 |
parents | f95d63e2154a |
children | 47bc9800972c |
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/* * Copyright (c) 1999, 2010, 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_PRIMS_JVMTITRACE_HPP #define SHARE_VM_PRIMS_JVMTITRACE_HPP #include "classfile/systemDictionary.hpp" #include "jvmtifiles/jvmti.h" #include "oops/objArrayOop.hpp" #include "prims/jvmtiEnvThreadState.hpp" #include "prims/jvmtiEventController.hpp" #include "prims/jvmtiUtil.hpp" #include "runtime/stackValueCollection.hpp" #include "runtime/vm_operations.hpp" /////////////////////////////////////////////////////////////// // // class JvmtiTrace // // Support for JVMTI tracing code // // Support tracing except in product build on the client compiler #ifndef PRODUCT #define JVMTI_TRACE 1 #else #ifdef COMPILER2 #define JVMTI_TRACE 1 #endif #endif #ifdef JVMTI_TRACE class JvmtiTrace : AllStatic { static bool _initialized; static bool _on; static bool _trace_event_controller; static jbyte _trace_flags[]; static jbyte _event_trace_flags[]; static const char* _event_names[]; static jint _max_function_index; static jint _max_event_index; static short _exclude_functions[]; static const char* _function_names[]; public: enum { SHOW_IN = 01, SHOW_OUT = 02, SHOW_ERROR = 04, SHOW_IN_DETAIL = 010, SHOW_OUT_DETAIL = 020, SHOW_EVENT_TRIGGER = 040, SHOW_EVENT_SENT = 0100 }; static bool tracing() { return _on; } static bool trace_event_controller() { return _trace_event_controller; } static jbyte trace_flags(int num) { return _trace_flags[num]; } static jbyte event_trace_flags(int num) { return _event_trace_flags[num]; } static const char* function_name(int num) { return _function_names[num]; } // To Do: add range checking static const char* event_name(int num) { static char* ext_event_name = (char*)"(extension event)"; if (num >= JVMTI_MIN_EVENT_TYPE_VAL && num <= JVMTI_MAX_EVENT_TYPE_VAL) { return _event_names[num]; } else { return ext_event_name; } } static const char* enum_name(const char** names, const jint* values, jint value); static void initialize(); static void shutdown(); // return a valid string no matter what state the thread is in static const char *safe_get_thread_name(Thread *thread); // return the name of the current thread static const char *safe_get_current_thread_name(); // return a valid string no matter what the state of k_mirror static const char *get_class_name(oop k_mirror); }; #endif /*JVMTI_TRACE */ #endif // SHARE_VM_PRIMS_JVMTITRACE_HPP