1 /*
2 * Copyright (c) 1998, 2010, 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/permGen.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "runtime/handles.inline.hpp"
34 #include "runtime/jniHandles.hpp"
35 #include "runtime/memprofiler.hpp"
36 #include "runtime/mutexLocker.hpp"
37 #include "runtime/os.hpp"
38 #include "runtime/task.hpp"
39 #include "runtime/vmThread.hpp"
40 #ifdef TARGET_OS_FAMILY_linux
41 # include "thread_linux.inline.hpp"
42 #endif
43 #ifdef TARGET_OS_FAMILY_solaris
44 # include "thread_solaris.inline.hpp"
45 #endif
46 #ifdef TARGET_OS_FAMILY_windows
47 # include "thread_windows.inline.hpp"
48 #endif
49
50 #ifndef PRODUCT
51
52 // --------------------------------------------------------
53 // MemProfilerTask
54
55 class MemProfilerTask : public PeriodicTask {
56 public:
57 MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
58 void task();
59 };
60
61
62 void MemProfilerTask::task() {
63 // Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.
64 MutexLocker mu(Threads_lock);
65 MemProfiler::do_trace();
66 }
67
68
69 //----------------------------------------------------------
70 // Implementation of MemProfiler
71
72 MemProfilerTask* MemProfiler::_task = NULL;
73 FILE* MemProfiler::_log_fp = NULL;
74
75
76 bool MemProfiler::is_active() {
77 return _task != NULL;
78 }
79
80
81 void MemProfiler::engage() {
82 const char *log_name = "mprofile.log";
83 if (!is_active()) {
84 // Create log file
85 _log_fp = fopen(log_name , "w+");
86 if (_log_fp == NULL) {
87 fatal(err_msg("MemProfiler: Cannot create log file: %s", log_name));
88 }
89 fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
90 fprintf(_log_fp, " time, #thr, #cls, heap, heap, perm, perm, code, hndls, rescs, oopmp\n");
91 fprintf(_log_fp, " used, total, used, total, total, total, total, total\n");
92 fprintf(_log_fp, "--------------------------------------------------------------------------\n");
93
94 _task = new MemProfilerTask(MemProfilingInterval);
95 _task->enroll();
96 }
97 }
98
99
100 void MemProfiler::disengage() {
101 if (!is_active()) return;
102 // Do one last trace at disengage time
103 do_trace();
104
105 // Close logfile
106 fprintf(_log_fp, "MemProfiler detached\n");
107 fclose(_log_fp);
108
109 // remove MemProfilerTask
110 assert(_task != NULL, "sanity check");
111 _task->disenroll();
112 delete _task;
113 _task = NULL;
114 }
115
116
117 void MemProfiler::do_trace() {
118 // Calculate thread local sizes
119 size_t handles_memory_usage = VMThread::vm_thread()->handle_area()->size_in_bytes();
120 size_t resource_memory_usage = VMThread::vm_thread()->resource_area()->size_in_bytes();
121 JavaThread *cur = Threads::first();
122 while (cur != NULL) {
123 handles_memory_usage += cur->handle_area()->size_in_bytes();
124 resource_memory_usage += cur->resource_area()->size_in_bytes();
125 cur = cur->next();
126 }
127
128 // Print trace line in log
129 fprintf(_log_fp, "%6.1f,%5d,%5d," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ","
130 UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",",
131 os::elapsedTime(),
132 Threads::number_of_threads(),
133 SystemDictionary::number_of_classes(),
134 Universe::heap()->used() / K,
135 Universe::heap()->capacity() / K,
136 Universe::heap()->permanent_used() / HWperKB,
137 Universe::heap()->permanent_capacity() / HWperKB);
138
139 fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K);
140
141 fprintf(_log_fp, UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",%6ld\n",
142 handles_memory_usage / K,
143 resource_memory_usage / K,
144 OopMapCache::memory_usage() / K);
145 fflush(_log_fp);
146 }
147
148 #endif