Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * 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