1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*
* Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
# include "incls/_precompiled.incl"
# include "incls/_memprofiler.cpp.incl"
#ifndef PRODUCT
// --------------------------------------------------------
// MemProfilerTask
class MemProfilerTask : public PeriodicTask {
public:
MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
void task();
};
void MemProfilerTask::task() {
// Get thread lock to provide mutual exclusion, and so we can iterate safely over the thread list.
MutexLocker mu(Threads_lock);
MemProfiler::do_trace();
}
//----------------------------------------------------------
// Implementation of MemProfiler
MemProfilerTask* MemProfiler::_task = NULL;
FILE* MemProfiler::_log_fp = NULL;
bool MemProfiler::is_active() {
return _task != NULL;
}
void MemProfiler::engage() {
const char *log_name = "mprofile.log";
if (!is_active()) {
// Create log file
_log_fp = fopen(log_name , "w+");
if (_log_fp == NULL) {
fatal1("MemProfiler: Cannot create log file: %s", log_name);
}
fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
fprintf(_log_fp, " time, #thr, #cls, heap, heap, perm, perm, code, hndls, rescs, oopmp\n");
fprintf(_log_fp, " used, total, used, total, total, total, total, total\n");
fprintf(_log_fp, "--------------------------------------------------------------------------\n");
_task = new MemProfilerTask(MemProfilingInterval);
_task->enroll();
}
}
void MemProfiler::disengage() {
if (!is_active()) return;
// Do one last trace at disengage time
do_trace();
// Close logfile
fprintf(_log_fp, "MemProfiler detached\n");
fclose(_log_fp);
// remove MemProfilerTask
assert(_task != NULL, "sanity check");
_task->disenroll();
delete _task;
_task = NULL;
}
void MemProfiler::do_trace() {
// Calculate thread local sizes
size_t handles_memory_usage = VMThread::vm_thread()->handle_area()->size_in_bytes();
size_t resource_memory_usage = VMThread::vm_thread()->resource_area()->size_in_bytes();
JavaThread *cur = Threads::first();
while (cur != NULL) {
handles_memory_usage += cur->handle_area()->size_in_bytes();
resource_memory_usage += cur->resource_area()->size_in_bytes();
cur = cur->next();
}
// Print trace line in log
fprintf(_log_fp, "%6.1f,%5d,%5d,%6ld,%6ld,%6ld,%6ld,",
os::elapsedTime(),
Threads::number_of_threads(),
SystemDictionary::number_of_classes(),
Universe::heap()->used() / K,
Universe::heap()->capacity() / K,
Universe::heap()->permanent_used() / HWperKB,
Universe::heap()->permanent_capacity() / HWperKB);
fprintf(_log_fp, "%6ld,", CodeCache::capacity() / K);
fprintf(_log_fp, "%6ld,%6ld,%6ld\n",
handles_memory_usage / K,
resource_memory_usage / K,
OopMapCache::memory_usage() / K);
fflush(_log_fp);
}
#endif
|
