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 #include <JavaScriptCore/Heap.h>
31 #include <JavaScriptCore/JSGlobalData.h>
32 #include <WebCore/GCController.h>
33 #include <WebCore/JSDOMWindow.h>
34 #include <runtime/JSLock.h>
35
36 using namespace JSC;
37 using namespace WebCore;
38
39 // WebJavaScriptCollector ---------------------------------------------------------------------------
40
WebJavaScriptCollector()41 WebJavaScriptCollector::WebJavaScriptCollector()
42 : m_refCount(0)
43 {
44 gClassCount++;
45 gClassNameCount.add("WebJavaScriptCollector");
46 }
47
~WebJavaScriptCollector()48 WebJavaScriptCollector::~WebJavaScriptCollector()
49 {
50 gClassCount--;
51 gClassNameCount.remove("WebJavaScriptCollector");
52 }
53
createInstance()54 WebJavaScriptCollector* WebJavaScriptCollector::createInstance()
55 {
56 WebJavaScriptCollector* instance = new WebJavaScriptCollector();
57 instance->AddRef();
58 return instance;
59 }
60
61 // IUnknown -------------------------------------------------------------------
62
QueryInterface(REFIID riid,void ** ppvObject)63 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::QueryInterface(REFIID riid, void** ppvObject)
64 {
65 *ppvObject = 0;
66 if (IsEqualGUID(riid, IID_IUnknown))
67 *ppvObject = static_cast<IWebJavaScriptCollector*>(this);
68 else if (IsEqualGUID(riid, IID_IWebJavaScriptCollector))
69 *ppvObject = static_cast<IWebJavaScriptCollector*>(this);
70 else
71 return E_NOINTERFACE;
72
73 AddRef();
74 return S_OK;
75 }
76
AddRef(void)77 ULONG STDMETHODCALLTYPE WebJavaScriptCollector::AddRef(void)
78 {
79 return ++m_refCount;
80 }
81
Release(void)82 ULONG STDMETHODCALLTYPE WebJavaScriptCollector::Release(void)
83 {
84 ULONG newRef = --m_refCount;
85 if (!newRef)
86 delete(this);
87
88 return newRef;
89 }
90
91 // IWebJavaScriptCollector ------------------------------------------------------------------------------
92
collect()93 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collect()
94 {
95 gcController().garbageCollectNow();
96 return S_OK;
97 }
98
collectOnAlternateThread(BOOL waitUntilDone)99 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collectOnAlternateThread(
100 /* [in] */ BOOL waitUntilDone)
101 {
102 gcController().garbageCollectOnAlternateThreadForDebugging(!!waitUntilDone);
103 return S_OK;
104 }
105
objectCount(UINT * count)106 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::objectCount(
107 /* [retval][out] */ UINT* count)
108 {
109 if (!count) {
110 ASSERT_NOT_REACHED();
111 return E_POINTER;
112 }
113
114 JSLock lock(SilenceAssertionsOnly);
115 *count = (UINT)JSDOMWindow::commonJSGlobalData()->heap.objectCount();
116 return S_OK;
117 }
118