1 /*
2 * Copyright (c) 1998, 2018, 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/classLoaderDataGraph.inline.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "code/codeCache.hpp"
29 #include "gc/shared/collectedHeap.inline.hpp"
30 #include "interpreter/oopMapCache.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/thread.inline.hpp"
39 #include "runtime/threadSMR.hpp"
40 #include "runtime/vmThread.hpp"
41
42 #ifndef PRODUCT
43
44 // --------------------------------------------------------
45 // MemProfilerTask
46
47 class MemProfilerTask : public PeriodicTask {
48 public:
49 MemProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
50 void task();
51 };
52
53
54 void MemProfilerTask::task() {
55 MemProfiler::do_trace();
56 }
57
58
59 //----------------------------------------------------------
60 // Implementation of MemProfiler
61
62 MemProfilerTask* MemProfiler::_task = NULL;
63 FILE* MemProfiler::_log_fp = NULL;
64
65
66 bool MemProfiler::is_active() {
67 return _task != NULL;
68 }
69
70
71 void MemProfiler::engage() {
72 const char *log_name = "mprofile.log";
73 if (!is_active()) {
74 // Create log file
75 _log_fp = fopen(log_name , "w+");
76 if (_log_fp == NULL) {
77 fatal("MemProfiler: Cannot create log file: %s", log_name);
78 }
79 fprintf(_log_fp, "MemProfiler: sizes are in Kb, time is in seconds since startup\n\n");
80 fprintf(_log_fp, " time, #thr, #cls, heap, heap, perm, perm, code, hndls, rescs, oopmp\n");
81 fprintf(_log_fp, " used, total, used, total, total, total, total, total\n");
82 fprintf(_log_fp, "--------------------------------------------------------------------------\n");
83
84 _task = new MemProfilerTask(MemProfilingInterval);
85 _task->enroll();
86 }
87 }
88
89
90 void MemProfiler::disengage() {
91 if (!is_active()) return;
92 // Do one last trace at disengage time
93 do_trace();
94
95 // Close logfile
96 fprintf(_log_fp, "MemProfiler detached\n");
97 fclose(_log_fp);
98
99 // remove MemProfilerTask
100 assert(_task != NULL, "sanity check");
101 _task->disenroll();
102 delete _task;
103 _task = NULL;
104 }
105
106
107 void MemProfiler::do_trace() {
108 // Calculate thread local sizes
109 size_t handles_memory_usage = VMThread::vm_thread()->handle_area()->size_in_bytes();
110 size_t resource_memory_usage = VMThread::vm_thread()->resource_area()->size_in_bytes();
111 {
112 JavaThreadIteratorWithHandle jtiwh;
113 for (; JavaThread *cur = jtiwh.next(); ) {
114 handles_memory_usage += cur->handle_area()->size_in_bytes();
115 resource_memory_usage += cur->resource_area()->size_in_bytes();
116 }
117
118 // Print trace line in log
119 fprintf(_log_fp, "%6.1f,%5d," SIZE_FORMAT_W(5) "," UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",",
120 os::elapsedTime(),
121 jtiwh.length(),
122 ClassLoaderDataGraph::num_instance_classes(),
123 Universe::heap()->used() / K,
124 Universe::heap()->capacity() / K);
125 }
126
127 fprintf(_log_fp, UINTX_FORMAT_W(6) ",", CodeCache::capacity() / K);
128
129 fprintf(_log_fp, UINTX_FORMAT_W(6) "," UINTX_FORMAT_W(6) ",%6ld\n",
130 handles_memory_usage / K,
131 resource_memory_usage / K,
132 0L);
133 fflush(_log_fp);
134 }
135
136 #endif