1 /*
2 * Copyright (C) 2007 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 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "config.h"
30 #include "GCController.h"
31
32 #include <JavaScriptCore/JSObjectRef.h>
33 #include <JavaScriptCore/JSRetainPtr.h>
34
GCController()35 GCController::GCController()
36 {
37 }
38
~GCController()39 GCController::~GCController()
40 {
41 }
42
43 // Static Functions
44
collectCallback(JSContextRef context,JSObjectRef function,JSObjectRef thisObject,size_t argumentCount,const JSValueRef arguments[],JSValueRef * exception)45 static JSValueRef collectCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
46 {
47 GCController* controller = static_cast<GCController*>(JSObjectGetPrivate(thisObject));
48 controller->collect();
49 return JSValueMakeUndefined(context);
50 }
51
collectOnAlternateThreadCallback(JSContextRef context,JSObjectRef function,JSObjectRef thisObject,size_t argumentCount,const JSValueRef arguments[],JSValueRef * exception)52 static JSValueRef collectOnAlternateThreadCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
53 {
54 bool waitUntilDone = false;
55 if (argumentCount > 0)
56 waitUntilDone = JSValueToBoolean(context, arguments[0]);
57
58 GCController* controller = static_cast<GCController*>(JSObjectGetPrivate(thisObject));
59 controller->collectOnAlternateThread(waitUntilDone);
60
61 return JSValueMakeUndefined(context);
62 }
63
getJSObjectCountCallback(JSContextRef context,JSObjectRef function,JSObjectRef thisObject,size_t argumentCount,const JSValueRef arguments[],JSValueRef * exception)64 static JSValueRef getJSObjectCountCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
65 {
66 GCController* controller = static_cast<GCController*>(JSObjectGetPrivate(thisObject));
67 size_t jsObjectCount = controller->getJSObjectCount();
68
69 return JSValueMakeNumber(context, jsObjectCount);
70 }
71
72 // Object Creation
73
makeWindowObject(JSContextRef context,JSObjectRef windowObject,JSValueRef * exception)74 void GCController::makeWindowObject(JSContextRef context, JSObjectRef windowObject, JSValueRef* exception)
75 {
76 JSRetainPtr<JSStringRef> gcControllerStr(Adopt, JSStringCreateWithUTF8CString("GCController"));
77
78 JSClassRef classRef = getJSClass();
79 JSValueRef gcControllerObject = JSObjectMake(context, classRef, this);
80 JSClassRelease(classRef);
81
82 JSObjectSetProperty(context, windowObject, gcControllerStr.get(), gcControllerObject, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete, exception);
83 }
84
getJSClass()85 JSClassRef GCController::getJSClass()
86 {
87 static JSStaticFunction staticFunctions[] = {
88 { "collect", collectCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
89 { "collectOnAlternateThread", collectOnAlternateThreadCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
90 { "getJSObjectCount", getJSObjectCountCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },
91 { 0, 0, 0 }
92 };
93
94 static JSClassDefinition classDefinition = {
95 0, kJSClassAttributeNone, "GCController", 0, 0, staticFunctions,
96 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
97 };
98
99 return JSClassCreate(&classDefinition);
100 }
101