sdlTryLockRwLockForWriting function mutex

bool sdlTryLockRwLockForWriting(Pointer<NativeType> arg0, Pointer<NativeType> arg1)

Try to lock a read/write lock for writing without blocking.

This works just like SDL_LockRWLockForWriting(), but if the rwlock is not available, then this function returns false immediately.

This technique is useful if you need exclusive access to a resource but don't want to wait for it, and will return to it to try again later.

It is illegal for the owning thread to lock an already-locked rwlock for writing (read-only may be locked recursively, writing can not). Doing so results in undefined behavior.

It is illegal to request a write lock from a thread that already holds a read-only lock. Doing so results in undefined behavior. Unlock the read-only lock before requesting a write lock.

This function returns true if passed a NULL rwlock.

\param rwlock the rwlock to try to lock. \returns true on success, false if the lock would block.

\since This function is available since SDL 3.2.0.

\sa SDL_LockRWLockForWriting \sa SDL_TryLockRWLockForReading \sa SDL_UnlockRWLock

extern SDL_DECLSPEC bool SDLCALL SDL_TryLockRWLockForWriting(SDL_RWLock *rwlock) SDL_TRY_ACQUIRE(true, rwlock)

Implementation

bool sdlTryLockRwLockForWriting(
  Pointer<NativeType> arg0,
  Pointer<NativeType> arg1,
) {
  final sdlTryLockRwLockForWritingLookupFunction = _libSdl
      .lookupFunction<
        Uint8 Function(Pointer<NativeType> arg0, Pointer<NativeType> arg1),
        int Function(Pointer<NativeType> arg0, Pointer<NativeType> arg1)
      >('SDL_TryLockRWLockForWriting');
  return sdlTryLockRwLockForWritingLookupFunction(arg0, arg1) == 1;
}