Mercurial > sdl-ios-xcode
view docs/man3/SDL_CreateMutex.3 @ 865:92615154bb68
Date: Sun, 29 Feb 2004 15:14:22 +0200
From: Martin_Storsj
Subject: Dynamic loading of ALSA
I recently discovered that SDL can dynamically load ESD and aRts, and
made a patch which adds this same functionality to ALSA.
The update for configure.in isn't too good (it should e.g. look for
libasound.so in other directories than /usr/lib), because I'm not too
good at shellscripting and autoconf.
The reason for using dlfcn.h and dlopen instead of SDL_LoadLibrary and
SDL_LoadFunction is that libasound uses versioned symbols, and it is
necessary to load the correct version using dlvsym. This isn't probably
any real portability issue, because ALSA is linux-only.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 02 Mar 2004 12:49:16 +0000 |
parents | e5bc29de3f0a |
children | 546f7c1eb755 |
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.TH "SDL_CreateMutex" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" .SH "NAME" SDL_CreateMutex\- Create a mutex .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" #include "SDL_thread\&.h" .sp \fBSDL_mutex *\fBSDL_CreateMutex\fP\fR(\fBvoid\fR); .SH "DESCRIPTION" .PP Create a new, unlocked mutex\&. .SH "EXAMPLES" .PP .nf \f(CWSDL_mutex *mut; mut=SDL_CreateMutex(); \&. \&. if(SDL_mutexP(mut)==-1){ fprintf(stderr, "Couldn\&'t lock mutex "); exit(-1); } \&. /* Do stuff while mutex is locked */ \&. \&. if(SDL_mutexV(mut)==-1){ fprintf(stderr, "Couldn\&'t unlock mutex "); exit(-1); } SDL_DestroyMutex(mut); \fR .fi .PP .SH "SEE ALSO" .PP \fI\fBSDL_mutexP\fP\fR, \fI\fBSDL_mutexV\fP\fR, \fI\fBSDL_DestroyMutex\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00