view docs/man3/SDL_CreateMutex.3 @ 4337:4eb6b4be1dbc SDL-1.2

Fixed bug #728 I am using a headset on my monitor as primary sound output device. From time to time it happens that I switch off my monitor when I leave my computer and switch it on when I come back. When doing so while wesnoth is running I get no sound back when I switch on my monitor. There is probably good reason for that. Therefore I wanted to exit and restart wesnoth. Unfortunately, wesnoth always hangs in this situation. It looks like wesnoth can not be exited when the primary sound device vanished. I created a backtrace of this situation (please see attachment).
author Sam Lantinga <slouken@libsdl.org>
date Thu, 15 Oct 2009 02:52:11 +0000
parents 1238da4a7112
children
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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