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