1/*
2 * Copyright (c) 1997, 2015, 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 "memory/allocation.inline.hpp"
27#include "runtime/mutexLocker.hpp"
28#include "runtime/os.inline.hpp"
29#include "runtime/osThread.hpp"
30#include "runtime/thread.inline.hpp"
31#include "runtime/threadCritical.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::_redefinitions = NULL;
40StringEventLog* Events::_deopt_messages = NULL;
41
42EventLog::EventLog() {
43  // This normally done during bootstrap when we're only single
44  // threaded but use a ThreadCritical to ensure inclusion in case
45  // some are created slightly late.
46  ThreadCritical tc;
47  _next = Events::_logs;
48  Events::_logs = this;
49}
50
51// For each registered event logger, print out the current contents of
52// the buffer.  This is normally called when the JVM is crashing.
53void Events::print_all(outputStream* out) {
54  EventLog* log = _logs;
55  while (log != NULL) {
56    log->print_log_on(out);
57    log = log->next();
58  }
59}
60
61void Events::print() {
62  print_all(tty);
63}
64
65void Events::init() {
66  if (LogEvents) {
67    _messages = new StringEventLog("Events");
68    _exceptions = new StringEventLog("Internal exceptions");
69    _redefinitions = new StringEventLog("Classes redefined");
70    _deopt_messages = new StringEventLog("Deoptimization events");
71  }
72}
73
74void eventlog_init() {
75  Events::init();
76}
77
78///////////////////////////////////////////////////////////////////////////
79// EventMark
80
81EventMark::EventMark(const char* format, ...) {
82  if (LogEvents) {
83    va_list ap;
84    va_start(ap, format);
85    // Save a copy of begin message and log it.
86    _buffer.printv(format, ap);
87    Events::log(NULL, "%s", _buffer.buffer());
88    va_end(ap);
89  }
90}
91
92EventMark::~EventMark() {
93  if (LogEvents) {
94    // Append " done" to the begin message and log it
95    _buffer.append(" done");
96    Events::log(NULL, "%s", _buffer.buffer());
97  }
98}
99