1 /*
2 * Copyright (c) 1998, 2012, 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 */
24
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/vmThread.hpp"
39 #ifdef TARGET_OS_FAMILY_linux
40 # include "thread_linux.inline.hpp"
41 #endif
42 #ifdef TARGET_OS_FAMILY_solaris
43 # include "thread_solaris.inline.hpp"
44 #endif
45 #ifdef TARGET_OS_FAMILY_windows
46 # include "thread_windows.inline.hpp"
47 #endif
48 #ifdef TARGET_OS_FAMILY_bsd
49 # include "thread_bsd.inline.hpp"
50 #endif
51
52 #ifndef PRODUCT
53
54 // --------------------------------------------------------
55 // MemProfilerTask
56
57 class MemProfilerTask : public PeriodicTask {
58 public:
59 MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
60 void task();
61 };
62
63
64 void MemProfilerTask::task() {
65 // Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.
66 MutexLocker mu(Threads_lock);
67 MemProfiler::do_trace();
68 }
69
70
71 //----------------------------------------------------------
72 // Implementation of MemProfiler
73
74 MemProfilerTask* MemProfiler::_task = NULL;
75 FILE* MemProfiler::_log_fp = NULL;
76
77
78 bool MemProfiler::is_active() {
79 return _task != NULL;
80 }
81
82
83 void MemProfiler::engage() {
84 const char *log_name = "mprofile.log";
85 if (!is_active()) {
86 // Create log file
87 _log_fp = fopen(log_name , "w+");
88 if (_log_fp == NULL) {
89 fatal(err_msg("MemProfiler: Cannot create log file: %s", log_name));
90 }
91 fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
92 fprintf(_log_fp, " time, #thr, #cls, heap, heap, perm, perm, code, hndls, rescs, oopmp\n");
93 fprintf(_log_fp, " used, total, used, total, total, total, total, total\n");
94 fprintf(_log_fp, "--------------------------------------------------------------------------\n");
95
96 _task = new MemProfilerTask(MemProfilingInterval);
97 _task->enroll();
98 }
99 }
100
101
102 void MemProfiler::disengage() {
103 if (!is_active()) return;
104 // Do one last trace at disengage time
105 do_trace();
106
107 // Close logfile
108 fprintf(_log_fp, "MemProfiler detached\n");
109 fclose(_log_fp);
110
111 // remove MemProfilerTask
112 assert(_task != NULL, "sanity check");
113 _task->disenroll();
114 delete _task;
115 _task = NULL;
116 }
117
118
119 void MemProfiler::do_trace() {
120 // Calculate thread local sizes
121 size_t handles_memory_usage = VMThread::vm_thread()->handle_area()->size_in_bytes();
122 size_t resource_memory_usage = VMThread::vm_thread()->resource_area()->size_in_bytes();
123 JavaThread *cur = Threads::first();
124 while (cur != NULL) {
125 handles_memory_usage += cur->handle_area()->size_in_bytes();
126 resource_memory_usage += cur->resource_area()->size_in_bytes();
127 cur = cur->next();
128 }
129
130 // Print trace line in log
131 fprintf(_log_fp, "%6.1f,%5d,%5d," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",",
132 os::elapsedTime(),
133 Threads::number_of_threads(),
134 SystemDictionary::number_of_classes(),
135 Universe::heap()->used() / K,
136 Universe::heap()->capacity() / K);
137
138 fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K);
139
140 fprintf(_log_fp, UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",%6ld\n",
141 handles_memory_usage / K,
142 resource_memory_usage / K,
143 OopMapCache::memory_usage() / K);
144 fflush(_log_fp);
145 }
146
147 #endif