1 /*
2 * Copyright (C) 2007, 2008 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "WebKitDLL.h"
28 #include "WebJavaScriptCollector.h"
29
30 #pragma warning(push, 0)
31 #include <JavaScriptCore/JSGlobalData.h>
32 #include <JavaScriptCore/collector.h>
33 #include <WebCore/GCController.h>
34 #include <WebCore/JSDOMWindow.h>
35 #include <runtime/JSLock.h>
36 #pragma warning(pop)
37
38 using namespace JSC;
39 using namespace WebCore;
40
41 // WebJavaScriptCollector ---------------------------------------------------------------------------
42
WebJavaScriptCollector()43 WebJavaScriptCollector::WebJavaScriptCollector()
44 : m_refCount(0)
45 {
46 gClassCount++;
47 gClassNameCount.add("WebJavaScriptCollector");
48 }
49
~WebJavaScriptCollector()50 WebJavaScriptCollector::~WebJavaScriptCollector()
51 {
52 gClassCount--;
53 gClassNameCount.remove("WebJavaScriptCollector");
54 }
55
createInstance()56 WebJavaScriptCollector* WebJavaScriptCollector::createInstance()
57 {
58 WebJavaScriptCollector* instance = new WebJavaScriptCollector();
59 instance->AddRef();
60 return instance;
61 }
62
63 // IUnknown -------------------------------------------------------------------
64
QueryInterface(REFIID riid,void ** ppvObject)65 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::QueryInterface(REFIID riid, void** ppvObject)
66 {
67 *ppvObject = 0;
68 if (IsEqualGUID(riid, IID_IUnknown))
69 *ppvObject = static_cast<IWebJavaScriptCollector*>(this);
70 else if (IsEqualGUID(riid, IID_IWebJavaScriptCollector))
71 *ppvObject = static_cast<IWebJavaScriptCollector*>(this);
72 else
73 return E_NOINTERFACE;
74
75 AddRef();
76 return S_OK;
77 }
78
AddRef(void)79 ULONG STDMETHODCALLTYPE WebJavaScriptCollector::AddRef(void)
80 {
81 return ++m_refCount;
82 }
83
Release(void)84 ULONG STDMETHODCALLTYPE WebJavaScriptCollector::Release(void)
85 {
86 ULONG newRef = --m_refCount;
87 if (!newRef)
88 delete(this);
89
90 return newRef;
91 }
92
93 // IWebJavaScriptCollector ------------------------------------------------------------------------------
94
collect()95 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collect()
96 {
97 gcController().garbageCollectNow();
98 return S_OK;
99 }
100
collectOnAlternateThread(BOOL waitUntilDone)101 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collectOnAlternateThread(
102 /* [in] */ BOOL waitUntilDone)
103 {
104 gcController().garbageCollectOnAlternateThreadForDebugging(!!waitUntilDone);
105 return S_OK;
106 }
107
objectCount(UINT * count)108 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::objectCount(
109 /* [retval][out] */ UINT* count)
110 {
111 if (!count) {
112 ASSERT_NOT_REACHED();
113 return E_POINTER;
114 }
115
116 JSLock lock(SilenceAssertionsOnly);
117 *count = (UINT)JSDOMWindow::commonJSGlobalData()->heap.objectCount();
118 return S_OK;
119 }
120