jdk8-mips64-public/hotspot: src/share/vm/runtime/memprofiler.cpp@eef07cd490d4

     1 /*

     2  * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "classfile/systemDictionary.hpp"

    27 #include "code/codeCache.hpp"

    28 #include "gc_interface/collectedHeap.inline.hpp"

    29 #include "interpreter/oopMapCache.hpp"

    30 #include "memory/generation.hpp"

    31 #include "memory/resourceArea.hpp"

    32 #include "runtime/handles.inline.hpp"

    33 #include "runtime/jniHandles.hpp"

    34 #include "runtime/memprofiler.hpp"

    35 #include "runtime/mutexLocker.hpp"

    36 #include "runtime/os.hpp"

    37 #include "runtime/task.hpp"

    38 #include "runtime/thread.inline.hpp"

    39 #include "runtime/vmThread.hpp"

    41 #ifndef PRODUCT

    43 // --------------------------------------------------------

    44 // MemProfilerTask

    46 class MemProfilerTask : public PeriodicTask {

    47  public:

    48   MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}

    49   void task();

    50 };

    53 void MemProfilerTask::task() {

    54   // Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.

    55   MutexLocker mu(Threads_lock);

    56   MemProfiler::do_trace();

    57 }

    60 //----------------------------------------------------------

    61 // Implementation of MemProfiler

    63 MemProfilerTask* MemProfiler::_task   = NULL;

    64 FILE*            MemProfiler::_log_fp = NULL;

    67 bool MemProfiler::is_active() {

    68   return _task != NULL;

    69 }

    72 void MemProfiler::engage() {

    73   const char *log_name = "mprofile.log";

    74   if (!is_active()) {

    75     // Create log file

    76     _log_fp = fopen(log_name , "w+");

    77     if (_log_fp == NULL) {

    78       fatal(err_msg("MemProfiler: Cannot create log file: %s", log_name));

    79     }

    80     fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");

    81     fprintf(_log_fp, "  time, #thr, #cls,  heap,  heap,  perm,  perm,  code, hndls, rescs, oopmp\n");

    82     fprintf(_log_fp, "                     used, total,  used, total, total, total, total, total\n");

    83     fprintf(_log_fp, "--------------------------------------------------------------------------\n");

    85     _task = new MemProfilerTask(MemProfilingInterval);

    86     _task->enroll();

    87   }

    88 }

    91 void MemProfiler::disengage() {

    92   if (!is_active()) return;

    93   // Do one last trace at disengage time

    94   do_trace();

    96   // Close logfile

    97   fprintf(_log_fp, "MemProfiler detached\n");

    98   fclose(_log_fp);

   100   // remove MemProfilerTask

   101   assert(_task != NULL, "sanity check");

   102   _task->disenroll();

   103   delete _task;

   104   _task = NULL;

   105 }

   108 void MemProfiler::do_trace() {

   109   // Calculate thread local sizes

   110   size_t handles_memory_usage    = VMThread::vm_thread()->handle_area()->size_in_bytes();

   111   size_t resource_memory_usage   = VMThread::vm_thread()->resource_area()->size_in_bytes();

   112   JavaThread *cur = Threads::first();

   113   while (cur != NULL) {

   114     handles_memory_usage  += cur->handle_area()->size_in_bytes();

   115     resource_memory_usage += cur->resource_area()->size_in_bytes();

   116     cur = cur->next();

   117   }

   119   // Print trace line in log

   120   fprintf(_log_fp, "%6.1f,%5d,%5d," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",",

   121           os::elapsedTime(),

   122           Threads::number_of_threads(),

   123           SystemDictionary::number_of_classes(),

   124           Universe::heap()->used() / K,

   125           Universe::heap()->capacity() / K);

   127   fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K);

   129   fprintf(_log_fp, UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) "\n",

   130           handles_memory_usage / K,

   131           resource_memory_usage / K,

   132           OopMapCache::memory_usage() / K);

   133   fflush(_log_fp);

   134 }

   136 #endif

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