SDL_TryLockRWLockForWriting - Try to lock a read/write lock _for writing_ without blocking.
Contents
Availability
This function is available since SDL 3.2.0.
Description
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.
Header File
Defined in SDL3/SDL_mutex.h
Name
SDL_TryLockRWLockForWriting - Try to lock a read/write lock _for writing_ without blocking.
Return Value
Returns true on success, false if the lock would block.
See Also
•(3), SDL_LockRWLockForWriting(3), •(3), SDL_TryLockRWLockForReading(3), •(3), SDL_UnlockRWLock(3) Simple Directmedia Layer SDL 3.2.10 SDL_TryLockRWLockForWriting(3)
Synopsis
#include"SDL3/SDL.h"boolSDL_TryLockRWLockForWriting(SDL_RWLock*rwlock);
