Mercurial > hg > truffle
annotate src/share/vm/runtime/memprofiler.cpp @ 14238:d3a3fc905c7e
8021266: Better life cycle for objects
Summary: Improve life cycle for objects
Reviewed-by: art, hseigel
Contributed-by: gerard.ziemski@oracle.com
author | coleenp |
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date | Thu, 05 Sep 2013 10:29:00 -0400 |
parents | f34d701e952e |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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" | |
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38 #include "runtime/thread.inline.hpp" |
1972 | 39 #include "runtime/vmThread.hpp" |
0 | 40 |
41 #ifndef PRODUCT | |
42 | |
43 // -------------------------------------------------------- | |
44 // MemProfilerTask | |
45 | |
46 class MemProfilerTask : public PeriodicTask { | |
47 public: | |
48 MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {} | |
49 void task(); | |
50 }; | |
51 | |
52 | |
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 } | |
58 | |
59 | |
60 //---------------------------------------------------------- | |
61 // Implementation of MemProfiler | |
62 | |
63 MemProfilerTask* MemProfiler::_task = NULL; | |
64 FILE* MemProfiler::_log_fp = NULL; | |
65 | |
66 | |
67 bool MemProfiler::is_active() { | |
68 return _task != NULL; | |
69 } | |
70 | |
71 | |
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) { | |
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78 fatal(err_msg("MemProfiler: Cannot create log file: %s", log_name)); |
0 | 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"); | |
84 | |
85 _task = new MemProfilerTask(MemProfilingInterval); | |
86 _task->enroll(); | |
87 } | |
88 } | |
89 | |
90 | |
91 void MemProfiler::disengage() { | |
92 if (!is_active()) return; | |
93 // Do one last trace at disengage time | |
94 do_trace(); | |
95 | |
96 // Close logfile | |
97 fprintf(_log_fp, "MemProfiler detached\n"); | |
98 fclose(_log_fp); | |
99 | |
100 // remove MemProfilerTask | |
101 assert(_task != NULL, "sanity check"); | |
102 _task->disenroll(); | |
103 delete _task; | |
104 _task = NULL; | |
105 } | |
106 | |
107 | |
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 } | |
118 | |
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); |
0 | 126 |
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127 fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K); |
0 | 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); |
0 | 133 fflush(_log_fp); |
134 } | |
135 | |
136 #endif |