流媒体/Mpeg4/MP4

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Visual C++

SDL_SemPost.3：源码内容

							.TH "SDL_SemPost" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_SemPost- Unlock a semaphore&.
.SH "SYNOPSIS"
.PP
fB#include "SDL&.h"
#include "SDL_thread&.h"
.sp
fBint fBSDL_SemPostfPfR(fBSDL_sem *semfR);
.SH "DESCRIPTION"
.PP
fBSDL_SemPostfP unlocks the semaphore pointed to by fBsemfR and atomically increments the semaphores value&. Threads that were blocking on the semaphore may be scheduled after this call succeeds&.
.PP
fBSDL_SemPostfP should be called after a semaphore is locked by a successful call to fISDL_SemWaitfR, fISDL_SemTryWaitfR or fISDL_SemWaitTimeoutfR&.
.SH "RETURN VALUE"
.PP
Returns fB0fR if successful or fB-1fR if there was an error (leaving the semaphore unchanged)&.
.SH "EXAMPLES"
.PP
.PP
.nf
f(CWSDL_SemPost(my_sem);fR
.fi
.PP
.SH "SEE ALSO"
.PP
fIfBSDL_CreateSemaphorefPfR, fIfBSDL_DestroySemaphorefPfR, fIfBSDL_SemWaitfPfR, fIfBSDL_SemTryWaitfPfR, fIfBSDL_SemWaitTimeoutfPfR, fIfBSDL_SemValuefPfR
..." created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00

						