SDL_TryLockRWLockForWriting3
Try to lock a read/write lock _for writing_ without blocking.
Usage
#include "SDL3/SDL.h"
bool SDL_TryLockRWLockForWriting(SDL_RWLock *rwlock);
Header file
Defined in SDL3/SDL_mutex.h
Overview
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.
Function parameters
- rwlock
-
the rwlock to try to lock.
Return value
Returns true on success, false if the lock would block.