126 lines
3.9 KiB
C++
126 lines
3.9 KiB
C++
/*
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* Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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# include "incls/_precompiled.incl"
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# include "incls/_memprofiler.cpp.incl"
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#ifndef PRODUCT
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// --------------------------------------------------------
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// MemProfilerTask
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class MemProfilerTask : public PeriodicTask {
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public:
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MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
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void task();
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};
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void MemProfilerTask::task() {
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// Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.
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MutexLocker mu(Threads_lock);
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MemProfiler::do_trace();
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}
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//----------------------------------------------------------
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// Implementation of MemProfiler
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MemProfilerTask* MemProfiler::_task = NULL;
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FILE* MemProfiler::_log_fp = NULL;
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bool MemProfiler::is_active() {
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return _task != NULL;
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}
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void MemProfiler::engage() {
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const char *log_name = "mprofile.log";
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if (!is_active()) {
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// Create log file
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_log_fp = fopen(log_name , "w+");
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if (_log_fp == NULL) {
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fatal1("MemProfiler: Cannot create log file: %s", log_name);
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}
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fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
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fprintf(_log_fp, " time, #thr, #cls, heap, heap, perm, perm, code, hndls, rescs, oopmp\n");
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fprintf(_log_fp, " used, total, used, total, total, total, total, total\n");
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fprintf(_log_fp, "--------------------------------------------------------------------------\n");
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_task = new MemProfilerTask(MemProfilingInterval);
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_task->enroll();
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}
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}
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void MemProfiler::disengage() {
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if (!is_active()) return;
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// Do one last trace at disengage time
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do_trace();
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// Close logfile
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fprintf(_log_fp, "MemProfiler detached\n");
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fclose(_log_fp);
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// remove MemProfilerTask
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assert(_task != NULL, "sanity check");
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_task->disenroll();
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delete _task;
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_task = NULL;
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}
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void MemProfiler::do_trace() {
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// Calculate thread local sizes
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size_t handles_memory_usage = VMThread::vm_thread()->handle_area()->size_in_bytes();
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size_t resource_memory_usage = VMThread::vm_thread()->resource_area()->size_in_bytes();
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JavaThread *cur = Threads::first();
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while (cur != NULL) {
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handles_memory_usage += cur->handle_area()->size_in_bytes();
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resource_memory_usage += cur->resource_area()->size_in_bytes();
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cur = cur->next();
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}
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// Print trace line in log
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fprintf(_log_fp, "%6.1f,%5d,%5d,%6ld,%6ld,%6ld,%6ld,",
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os::elapsedTime(),
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Threads::number_of_threads(),
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SystemDictionary::number_of_classes(),
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Universe::heap()->used() / K,
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Universe::heap()->capacity() / K,
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Universe::heap()->permanent_used() / HWperKB,
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Universe::heap()->permanent_capacity() / HWperKB);
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fprintf(_log_fp, "%6ld,", CodeCache::capacity() / K);
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fprintf(_log_fp, "%6ld,%6ld,%6ld\n",
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handles_memory_usage / K,
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resource_memory_usage / K,
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OopMapCache::memory_usage() / K);
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fflush(_log_fp);
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}
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#endif
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