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44 lines
1.2 KiB
44 lines
1.2 KiB
7 months ago
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/*
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* Copyright (C) 2016 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 _CM4F_TRYLOCK_H_
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#define _CM4F_TRYLOCK_H_
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef PLATFORM_HAS_OWN_TRYLOCK
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#include <plat/trylock.h>
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#else
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struct TryLock {
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volatile uint8_t lock;
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};
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#define TRYLOCK_DECL_STATIC(name) struct TryLock name
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#define TRYLOCK_INIT_STATIC() {0}
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void trylockInit(struct TryLock *lock);
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void trylockRelease(struct TryLock *lock);
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bool trylockTryTake(struct TryLock *lock); //true if we took it
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/* DON'T YOU EVER DARE TO TRY AND IMPLEMENT A BLOCKING "TAKE" ON THIS TYPE OF LOCK! -dmitrygr@ */
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#endif //PLATFORM_HAS_OWN_TRYLOCK
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#endif
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