1 /*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "V8GCForContextDispose.h"
33
34 #include <wtf/StdLibExtras.h>
35
36 namespace WebCore {
37
V8GCForContextDispose()38 V8GCForContextDispose::V8GCForContextDispose()
39 : m_pseudoIdleTimer(this, &V8GCForContextDispose::pseudoIdleTimerFired)
40 {
41 }
42
notifyContextDisposed()43 void V8GCForContextDispose::notifyContextDisposed()
44 {
45 v8::V8::ContextDisposedNotification();
46 if (!m_pseudoIdleTimer.isActive())
47 m_pseudoIdleTimer.startOneShot(0.8);
48 }
49
notifyIdleSooner(double maximumFireInterval)50 void V8GCForContextDispose::notifyIdleSooner(double maximumFireInterval)
51 {
52 if (m_pseudoIdleTimer.isActive()) {
53 double nextFireInterval = m_pseudoIdleTimer.nextFireInterval();
54 if (nextFireInterval > maximumFireInterval) {
55 m_pseudoIdleTimer.stop();
56 m_pseudoIdleTimer.startOneShot(maximumFireInterval);
57 }
58 }
59 }
60
instance()61 V8GCForContextDispose& V8GCForContextDispose::instance()
62 {
63 DEFINE_STATIC_LOCAL(V8GCForContextDispose, staticInstance, ());
64 return staticInstance;
65 }
66
pseudoIdleTimerFired(Timer<V8GCForContextDispose> *)67 void V8GCForContextDispose::pseudoIdleTimerFired(Timer<V8GCForContextDispose>*)
68 {
69 v8::V8::IdleNotification();
70 }
71
72 } // namespace WebCore
73