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 "DumpRenderTree.h"

    30 #include "GCController.h"

    31 

    32 #include <JavaScriptCore/JSObjectRef.h>

    33 #include <JavaScriptCore/JSRetainPtr.h>

    34 

    35 GCController::GCController()

    36 {

    37 }

    38 

    39 GCController::~GCController()

    40 {

    41 }

    42 

    43 // Static Functions

    44 

    45 static JSValueRef collectCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)

    46 {

    47     GCController* controller = reinterpret_cast<GCController*>(JSObjectGetPrivate(thisObject));

    48     controller->collect();

    49     return JSValueMakeUndefined(context);

    50 }

    51 

    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 = reinterpret_cast<GCController*>(JSObjectGetPrivate(thisObject));

    59     controller->collectOnAlternateThread(waitUntilDone);

    60 

    61     return JSValueMakeUndefined(context);

    62 }

    63 

    64 static JSValueRef getJSObjectCountCallback(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)

    65 {

    66     GCController* controller = reinterpret_cast<GCController*>(JSObjectGetPrivate(thisObject));

    67     size_t jsObjectCount = controller->getJSObjectCount();

    68 

    69     return JSValueMakeNumber(context, jsObjectCount);

    70 }

    71 

    72 // Object Creation

    73 

    74 void GCController::makeWindowObject(JSContextRef context, JSObjectRef windowObject, JSValueRef* exception)

    75 {

    76     JSRetainPtr<JSStringRef> gcControllerStr(Adopt, JSStringCreateWithUTF8CString("GCController"));

    77     JSValueRef gcControllerObject = JSObjectMake(context, getJSClass(), this);

    78     JSObjectSetProperty(context, windowObject, gcControllerStr.get(), gcControllerObject, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete, exception);

    79 }

    80 

    81 JSClassRef GCController::getJSClass()

    82 {

    83     static JSClassRef gcControllerClass = 0;

    84 

    85     if (!gcControllerClass) {

    86         JSStaticFunction* staticFunctions = GCController::staticFunctions();

    87         JSClassDefinition classDefinition = {

    88             0, kJSClassAttributeNone, "GCController", 0, 0, staticFunctions,

    89             0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

    90         };

    91 

    92         gcControllerClass = JSClassCreate(&classDefinition);

    93     }

    94 

    95     return gcControllerClass;

    96 }

    97 

    98 JSStaticFunction* GCController::staticFunctions()

    99 {

   100     static JSStaticFunction staticFunctions[] = {

   101         { "collect", collectCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

   102         { "collectOnAlternateThread", collectOnAlternateThreadCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

   103         { "getJSObjectCount", getJSObjectCountCallback, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete },

   104         { 0, 0, 0 }

   105     };

   106 

   107     return staticFunctions;

   108 }