68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
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/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SkGlobals_DEFINED
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#define SkGlobals_DEFINED
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#include "SkThread.h"
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class SkGlobals {
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public:
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class Rec {
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public:
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virtual ~Rec();
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private:
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Rec* fNext;
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uint32_t fTag;
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friend class SkGlobals;
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};
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/** Look for a matching Rec for the specified tag. If one is found, return it.
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If one is not found, if create_proc is null, return null, else
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call the proc, and if it returns a Rec, add it to the global list
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and return it.
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create_proc can NOT call back into SkGlobals::Find (it would deadlock)
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*/
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static Rec* Find(uint32_t tag, Rec* (*create_proc)());
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/** Helper for Find, when you want to assert that the Rec is already in the list
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*/
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static Rec* Get(uint32_t tag)
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{
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Rec* rec = SkGlobals::Find(tag, NULL);
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SkASSERT(rec);
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return rec;
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}
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// used by porting layer
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struct BootStrap {
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SkMutex fMutex;
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Rec* fHead;
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};
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private:
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static void Init();
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static void Term();
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friend class SkGraphics;
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// This last function is implemented in the porting layer
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static BootStrap& GetBootStrap();
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};
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#endif
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