mirror of https://gitlab.freedesktop.org/mesa/mesa
74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/*
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* Copyright 2020 Lag Free Games, LLC
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* Copyright 2022 Yonggang Luo
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* SPDX-License-Identifier: MIT
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*/
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#include <assert.h>
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#include "rwlock.h"
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#if defined(_WIN32) && !defined(HAVE_PTHREAD)
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#include <windows.h>
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static_assert(sizeof(struct u_rwlock) == sizeof(SRWLOCK),
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"struct u_rwlock should have equal size with SRWLOCK");
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#endif
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int u_rwlock_init(struct u_rwlock *rwlock)
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{
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#if defined(_WIN32) && !defined(HAVE_PTHREAD)
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InitializeSRWLock((PSRWLOCK)(&rwlock->rwlock));
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return 0;
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#else
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return pthread_rwlock_init(&rwlock->rwlock, NULL);
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#endif
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}
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int u_rwlock_destroy(struct u_rwlock *rwlock)
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{
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#if defined(_WIN32) && !defined(HAVE_PTHREAD)
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return 0;
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#else
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return pthread_rwlock_destroy(&rwlock->rwlock);
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#endif
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}
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int u_rwlock_rdlock(struct u_rwlock *rwlock)
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{
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#if defined(_WIN32) && !defined(HAVE_PTHREAD)
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AcquireSRWLockShared((PSRWLOCK)&rwlock->rwlock);
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return 0;
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#else
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return pthread_rwlock_rdlock(&rwlock->rwlock);
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#endif
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}
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int u_rwlock_rdunlock(struct u_rwlock *rwlock)
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{
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#if defined(_WIN32) && !defined(HAVE_PTHREAD)
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ReleaseSRWLockShared((PSRWLOCK)&rwlock->rwlock);
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return 0;
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#else
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return pthread_rwlock_unlock(&rwlock->rwlock);
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#endif
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}
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int u_rwlock_wrlock(struct u_rwlock *rwlock)
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{
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#if defined(_WIN32) && !defined(HAVE_PTHREAD)
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AcquireSRWLockExclusive((PSRWLOCK)&rwlock->rwlock);
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return 0;
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#else
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return pthread_rwlock_wrlock(&rwlock->rwlock);
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#endif
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}
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int u_rwlock_wrunlock(struct u_rwlock *rwlock)
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{
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#if defined(_WIN32) && !defined(HAVE_PTHREAD)
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ReleaseSRWLockExclusive((PSRWLOCK)&rwlock->rwlock);
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return 0;
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#else
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return pthread_rwlock_unlock(&rwlock->rwlock);
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#endif
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}
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