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/*
* Copyright (c) 1998, 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.
*
*/
#include "precompiled.hpp"
#include "classfile/systemDictionary.hpp"
#include "code/codeCache.hpp"
#include "gc_interface/collectedHeap.inline.hpp"
#include "interpreter/oopMapCache.hpp"
#include "memory/generation.hpp"
#include "memory/resourceArea.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/jniHandles.hpp"
#include "runtime/memprofiler.hpp"
#include "runtime/mutexLocker.hpp"
#include "runtime/os.hpp"
#include "runtime/task.hpp"
#include "runtime/vmThread.hpp"
#ifdef TARGET_OS_FAMILY_linux
# include "thread_linux.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_solaris
# include "thread_solaris.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_windows
# include "thread_windows.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_bsd
# include "thread_bsd.inline.hpp"
#endif
#ifndef PRODUCT
// --------------------------------------------------------
// MemProfilerTask
class MemProfilerTask : public PeriodicTask {
public:
MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
void task();
};
void MemProfilerTask::task() {
// Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.
MutexLocker mu(Threads_lock);
MemProfiler::do_trace();
}
//----------------------------------------------------------
// Implementation of MemProfiler
MemProfilerTask* MemProfiler::_task = NULL;
FILE* MemProfiler::_log_fp = NULL;
bool MemProfiler::is_active() {
return _task != NULL;
}
void MemProfiler::engage() {
const char *log_name = "mprofile.log";
if (!is_active()) {
// Create log file
_log_fp = fopen(log_name , "w+");
if (_log_fp == NULL) {
fatal(err_msg("MemProfiler: Cannot create log file: %s", log_name));
}
fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
fprintf(_log_fp, " time, #thr, #cls, heap, heap, perm, perm, code, hndls, rescs, oopmp\n");
fprintf(_log_fp, " used, total, used, total, total, total, total, total\n");
fprintf(_log_fp, "--------------------------------------------------------------------------\n");
_task = new MemProfilerTask(MemProfilingInterval);
_task->enroll();
}
}
void MemProfiler::disengage() {
if (!is_active()) return;
// Do one last trace at disengage time
do_trace();
// Close logfile
fprintf(_log_fp, "MemProfiler detached\n");
fclose(_log_fp);
// remove MemProfilerTask
assert(_task != NULL, "sanity check");
_task->disenroll();
delete _task;
_task = NULL;
}
void MemProfiler::do_trace() {
// Calculate thread local sizes
size_t handles_memory_usage = VMThread::vm_thread()->handle_area()->size_in_bytes();
size_t resource_memory_usage = VMThread::vm_thread()->resource_area()->size_in_bytes();
JavaThread *cur = Threads::first();
while (cur != NULL) {
handles_memory_usage += cur->handle_area()->size_in_bytes();
resource_memory_usage += cur->resource_area()->size_in_bytes();
cur = cur->next();
}
// Print trace line in log
fprintf(_log_fp, "%6.1f,%5d,%5d," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",",
os::elapsedTime(),
Threads::number_of_threads(),
SystemDictionary::number_of_classes(),
Universe::heap()->used() / K,
Universe::heap()->capacity() / K);
fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K);
fprintf(_log_fp, UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",%6ld\n",
handles_memory_usage / K,
resource_memory_usage / K,
OopMapCache::memory_usage() / K);
fflush(_log_fp);
}
#endif
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