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SDL Wiki

SDL_CondWait

Wait until a condition variable is signaled.

Syntax

int SDL_CondWait(SDL_cond * cond, SDL_mutex * mutex);

Function Parameters

cond

the condition variable to wait on

mutex

the mutex used to coordinate thread access

Return Value

Returns 0 when it is signaled or a negative error code on failure; call SDL_GetError() for more information.

Remarks

This function unlocks the specified mutex and waits for another thread to call SDL_CondSignal() or SDL_CondBroadcast() on the condition variable cond. Once the condition variable is signaled, the mutex is re-locked and the function returns.

The mutex must be locked before calling this function.

This function is the equivalent of calling SDL_CondWaitTimeout() with a time length of SDL_MUTEX_MAXWAIT.

Code Examples

<<Include(SDL_CreateCond, , , from="## Begin Condition Variable Example", to="## End Condition Variable Example")>>

SDL_CondBroadcast
SDL_CondSignal
SDL_CondWaitTimeout
SDL_CreateCond
SDL_DestroyCond

CategoryAPI, CategoryMutex


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