mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* Copyright (c) 2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "spinlock.h"
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#include "core_ctx.h"
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void recursiveSpinlockLock(RecursiveSpinlock *lock)
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{
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if (LIKELY(lock->tag != currentCoreCtx->coreId + 1)) {
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spinlockLock(&lock->lock);
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lock->tag = currentCoreCtx->coreId + 1;
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lock->count = 1;
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} else {
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++lock->count;
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}
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}
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bool recursiveSpinlockTryLock(RecursiveSpinlock *lock)
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{
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if (LIKELY(lock->tag != currentCoreCtx->coreId + 1)) {
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if (!spinlockTryLock(&lock->lock)) {
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return false;
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} else {
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lock->tag = currentCoreCtx->coreId + 1;
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lock->count = 1;
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return true;
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}
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} else {
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++lock->count;
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return true;
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}
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}
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void recursiveSpinlockUnlock(RecursiveSpinlock *lock)
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{
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if (LIKELY(--lock->count == 0)) {
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lock->tag = 0;
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spinlockUnlock(&lock->lock);
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}
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}
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