Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_CreateSemaphore.3 @ 1790:828a17e05192
Date: Mon, 8 May 2006 14:19:30 -0700
From: Bob Ippolito
Subject: SDL trunk (r2346) and Mac OS X
The current state of the trunk doesn't quite compile on Mac OS X,
I've attached a series of patches that gets it to compile and kills a
few warnings.
sdl-trunk-r2346-dlcompat-warnings.diff:
The dlcompat thing is just loaded with incorrect type signatures ..
some of them have changed since 10.2 and others are just flat wrong.
This puts it in sync with the latest headers. People on 10.2 will get
the warnings instead of people with new kits.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 09 May 2006 07:26:58 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_CreateSemaphore" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_CreateSemaphore\- Creates a new semaphore and assigns an initial value to it\&. | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 #include "SDL_thread\&.h" | |
| 8 .sp | |
| 9 \fBSDL_sem *\fBSDL_CreateSemaphore\fP\fR(\fBUint32 initial_value\fR); | |
| 10 .SH "DESCRIPTION" | |
| 11 .PP | |
| 12 \fBSDL_CreateSemaphore()\fP creates a new semaphore and initializes it with the value \fBinitial_value\fR\&. Each locking operation on the semaphore by \fISDL_SemWait\fR, \fISDL_SemTryWait\fR or \fISDL_SemWaitTimeout\fR will atomically decrement the semaphore value\&. The locking operation will be blocked if the semaphore value is not positive (greater than zero)\&. Each unlock operation by \fISDL_SemPost\fR will atomically increment the semaphore value\&. | |
| 13 .SH "RETURN VALUE" | |
| 14 .PP | |
| 15 Returns a pointer to an initialized semaphore or \fBNULL\fR if there was an error\&. | |
| 16 .SH "EXAMPLES" | |
| 17 .PP | |
| 18 .PP | |
| 19 .nf | |
| 20 \f(CWSDL_sem *my_sem; | |
| 21 | |
| 22 my_sem = SDL_CreateSemaphore(INITIAL_SEM_VALUE); | |
| 23 | |
| 24 if (my_sem == NULL) { | |
| 25 return CREATE_SEM_FAILED; | |
| 26 }\fR | |
| 27 .fi | |
| 28 .PP | |
| 29 .SH "SEE ALSO" | |
| 30 .PP | |
| 31 \fI\fBSDL_DestroySemaphore\fP\fR, \fI\fBSDL_SemWait\fP\fR, \fI\fBSDL_SemTryWait\fP\fR, \fI\fBSDL_SemWaitTimeout\fP\fR, \fI\fBSDL_SemPost\fP\fR, \fI\fBSDL_SemValue\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
32 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00 |