annotate src/share/vm/runtime/memprofiler.cpp @ 18096:ca6d25be853b jdk8u25-b13

8044269: Analysis of archive files. Summary: Add checksum verification. Reviewed-by: iklam, dholmes, mschoene
author jiangli
date Tue, 12 Aug 2014 17:46:16 -0400
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1 /*
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2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "classfile/systemDictionary.hpp"
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27 #include "code/codeCache.hpp"
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28 #include "gc_interface/collectedHeap.inline.hpp"
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29 #include "interpreter/oopMapCache.hpp"
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30 #include "memory/generation.hpp"
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31 #include "memory/resourceArea.hpp"
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32 #include "runtime/handles.inline.hpp"
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33 #include "runtime/jniHandles.hpp"
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34 #include "runtime/memprofiler.hpp"
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35 #include "runtime/mutexLocker.hpp"
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36 #include "runtime/os.hpp"
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37 #include "runtime/task.hpp"
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38 #include "runtime/thread.inline.hpp"
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39 #include "runtime/vmThread.hpp"
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41 #ifndef PRODUCT
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42
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43 // --------------------------------------------------------
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44 // MemProfilerTask
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45
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46 class MemProfilerTask : public PeriodicTask {
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47 public:
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48 MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
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49 void task();
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50 };
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51
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53 void MemProfilerTask::task() {
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54 // Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.
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55 MutexLocker mu(Threads_lock);
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56 MemProfiler::do_trace();
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57 }
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58
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59
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60 //----------------------------------------------------------
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61 // Implementation of MemProfiler
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62
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63 MemProfilerTask* MemProfiler::_task = NULL;
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64 FILE* MemProfiler::_log_fp = NULL;
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65
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67 bool MemProfiler::is_active() {
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68 return _task != NULL;
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69 }
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70
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72 void MemProfiler::engage() {
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73 const char *log_name = "mprofile.log";
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74 if (!is_active()) {
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75 // Create log file
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76 _log_fp = fopen(log_name , "w+");
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77 if (_log_fp == NULL) {
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78 fatal(err_msg("MemProfiler: Cannot create log file: %s", log_name));
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79 }
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80 fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
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81 fprintf(_log_fp, " time, #thr, #cls, heap, heap, perm, perm, code, hndls, rescs, oopmp\n");
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82 fprintf(_log_fp, " used, total, used, total, total, total, total, total\n");
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83 fprintf(_log_fp, "--------------------------------------------------------------------------\n");
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84
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85 _task = new MemProfilerTask(MemProfilingInterval);
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86 _task->enroll();
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87 }
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88 }
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89
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90
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91 void MemProfiler::disengage() {
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92 if (!is_active()) return;
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93 // Do one last trace at disengage time
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94 do_trace();
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95
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96 // Close logfile
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97 fprintf(_log_fp, "MemProfiler detached\n");
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98 fclose(_log_fp);
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99
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100 // remove MemProfilerTask
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101 assert(_task != NULL, "sanity check");
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102 _task->disenroll();
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103 delete _task;
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104 _task = NULL;
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105 }
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108 void MemProfiler::do_trace() {
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109 // Calculate thread local sizes
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110 size_t handles_memory_usage = VMThread::vm_thread()->handle_area()->size_in_bytes();
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111 size_t resource_memory_usage = VMThread::vm_thread()->resource_area()->size_in_bytes();
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112 JavaThread *cur = Threads::first();
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113 while (cur != NULL) {
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114 handles_memory_usage += cur->handle_area()->size_in_bytes();
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115 resource_memory_usage += cur->resource_area()->size_in_bytes();
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116 cur = cur->next();
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117 }
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118
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119 // Print trace line in log
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120 fprintf(_log_fp, "%6.1f,%5d,%5d," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",",
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121 os::elapsedTime(),
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122 Threads::number_of_threads(),
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123 SystemDictionary::number_of_classes(),
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124 Universe::heap()->used() / K,
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125 Universe::heap()->capacity() / K);
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126
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127 fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K);
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128
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129 fprintf(_log_fp, UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",%6ld\n",
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130 handles_memory_usage / K,
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131 resource_memory_usage / K,
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132 OopMapCache::memory_usage() / K);
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133 fflush(_log_fp);
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134 }
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135
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136 #endif