ec3ed6a5eb
I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
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/*
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* Copyright 2010 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkTRelay_DEFINED
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#define SkTRelay_DEFINED
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#include "SkRefCnt.h"
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/**
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* Similar to a weakptr in java, a Relay allows for a back-ptr to an
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* object to be "safe", without using a hard reference-count.
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*
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* Typically, the target creates a Relay with a pointer to itself. Whenever it
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* wants to have another object maintain a safe-ptr to it, it gives them a
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* Relay, which they ref()/unref(). Through the Relay each external object can
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* retrieve a pointer to the Target. However, when the Target goes away, it
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* clears the Relay pointer to it (relay->set(NULL)) and then unref()s the
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* Relay. The other objects still have a ref on the Relay, but now when they
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* call get() the receive a NULL.
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*/
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template <template T> class SkTRelay : public SkRefCnt {
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public:
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SkTRelay(T* ptr) : fPtr(ptr) {}
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// consumers call this
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T* get() const { return fPtr; }
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// producer calls this
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void set(T* ptr) { fPtr = ptr; }
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void clear() { this->set(NULL); }
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private:
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T* fPtr;
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};
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#endif
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