events.cpp revision 6412:53a41e7cbe05 
1/*
2 * Copyright (c) 1997, 2014, 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
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23 */
24
25#include "precompiled.hpp"
26#include "memory/allocation.inline.hpp"
27#include "runtime/mutexLocker.hpp"
28#include "runtime/osThread.hpp"
29#include "runtime/thread.inline.hpp"
30#include "runtime/threadCritical.hpp"
31#include "runtime/threadLocalStorage.hpp"
32#include "runtime/timer.hpp"
33#include "utilities/events.hpp"
34
35
36EventLog* Events::_logs = NULL;
37StringEventLog* Events::_messages = NULL;
38StringEventLog* Events::_exceptions = NULL;
39StringEventLog* Events::_deopt_messages = NULL;
40
41EventLog::EventLog() {
42  // This normally done during bootstrap when we're only single
43  // threaded but use a ThreadCritical to ensure inclusion in case
44  // some are created slightly late.
45  ThreadCritical tc;
46  _next = Events::_logs;
47  Events::_logs = this;
48}
49
50// For each registered event logger, print out the current contents of
51// the buffer.  This is normally called when the JVM is crashing.
52void Events::print_all(outputStream* out) {
53  EventLog* log = _logs;
54  while (log != NULL) {
55    log->print_log_on(out);
56    log = log->next();
57  }
58}
59
60void Events::print() {
61  print_all(tty);
62}
63
64void Events::init() {
65  if (LogEvents) {
66    _messages = new StringEventLog("Events");
67    _exceptions = new StringEventLog("Internal exceptions");
68    _deopt_messages = new StringEventLog("Deoptimization events");
69  }
70}
71
72void eventlog_init() {
73  Events::init();
74}
75
76///////////////////////////////////////////////////////////////////////////
77// EventMark
78
79EventMark::EventMark(const char* format, ...) {
80  if (LogEvents) {
81    va_list ap;
82    va_start(ap, format);
83    // Save a copy of begin message and log it.
84    _buffer.printv(format, ap);
85    Events::log(NULL, "%s", _buffer.buffer());
86    va_end(ap);
87  }
88}
89
90EventMark::~EventMark() {
91  if (LogEvents) {
92    // Append " done" to the begin message and log it
93    _buffer.append(" done");
94    Events::log(NULL, "%s", _buffer.buffer());
95  }
96}
97