| /* |
| * Copyright (c) 1998, 2017, 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/shared/collectedHeap.inline.hpp" |
| #include "gc/shared/generation.hpp" |
| #include "interpreter/oopMapCache.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/thread.inline.hpp" |
| #include "runtime/vmThread.hpp" |
| |
| #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("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(), |
| InstanceKlass::number_of_instance_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, |
| 0L); |
| fflush(_log_fp); |
| } |
| |
| #endif |