rwlock.h

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#ifndef __RWLOCK_H__
#define __RWLOCK_H__
 
#ifdef __cplusplus
extern "C" {
#endif
 
// Cross-platform thread synchronization
#ifdef _WIN32
#include <windows.h>
typedef SRWLOCK rwlock_t;
#else
#include <pthread.h>
typedef pthread_rwlock_t rwlock_t;
#endif
 
// Cross-platform rwlock helpers
#ifdef _WIN32
 
static inline bool rwlock_init(rwlock_t* lock) {
    InitializeSRWLock(lock);
    return true;  // Windows SRWLOCK initialization cannot fail
}
 
static inline void rwlock_rdlock(rwlock_t* lock) { AcquireSRWLockShared(lock); }
 
static inline void rwlock_wrlock(rwlock_t* lock) { AcquireSRWLockExclusive(lock); }
 
static inline void rwlock_unlock_rd(rwlock_t* lock) { ReleaseSRWLockShared(lock); }
 
static inline void rwlock_unlock_wr(rwlock_t* lock) { ReleaseSRWLockExclusive(lock); }
 
static inline void rwlock_destroy(rwlock_t* lock) {
    // SRWLOCK doesn't need explicit destruction
    (void)lock;
}
#else
static inline bool rwlock_init(rwlock_t* lock) { return pthread_rwlock_init(lock, NULL) == 0; }
 
static inline void rwlock_rdlock(rwlock_t* lock) { pthread_rwlock_rdlock(lock); }
 
static inline void rwlock_wrlock(rwlock_t* lock) { pthread_rwlock_wrlock(lock); }
 
static inline void rwlock_unlock_rd(rwlock_t* lock) { pthread_rwlock_unlock(lock); }
 
static inline void rwlock_unlock_wr(rwlock_t* lock) { pthread_rwlock_unlock(lock); }
 
static inline void rwlock_destroy(rwlock_t* lock) { pthread_rwlock_destroy(lock); }
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif  // __RWLOCK_H__