Mercurial > sdl-ios-xcode
view test/testlock.c @ 4:4f6c5f021323
Date: Thu, 26 Apr 2001 10:46:23 +0200
From: Alexander Pipelka <pipelka@bms-austria.com>
Subject: SDL ELO driver bugfix
Hi Sam!
We noticed that the ELO serial touchscreen controller is quite sensitive
in terms of correct protocol handling.
The current implementation cause some controllers to hangup after some
time (> 24h).
I think the attached patch should fix this (I ran my device more than 3
days without any hangups).
author | Sam Lantinga <slouken@lokigames.com> |
---|---|
date | Thu, 26 Apr 2001 16:54:56 +0000 |
parents | 74212992fb08 |
children | be9c9c8f6d53 |
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/* Test the thread and mutex locking functions Also exercises the system's signal/thread interaction */ #include <signal.h> #include <stdio.h> #include <stdlib.h> #include "SDL.h" #include "SDL_mutex.h" #include "SDL_thread.h" static SDL_mutex *mutex = NULL; static Uint32 mainthread; static SDL_Thread *threads[6]; void printid(void) { printf("Process %u: exiting\n", SDL_ThreadID()); } void terminate(int sig) { printf("Process %u: raising SIGTERM\n", SDL_ThreadID()); raise(SIGTERM); } void closemutex(int sig) { Uint32 id = SDL_ThreadID(); int i; printf("Process %u: Cleaning up...\n", id == mainthread ? 0 : id); for ( i=0; i<6; ++i ) SDL_KillThread(threads[i]); SDL_DestroyMutex(mutex); exit(sig); } int Run(void *data) { if ( SDL_ThreadID() == mainthread ) signal(SIGTERM, closemutex); while ( 1 ) { printf("Process %u ready to work\n", SDL_ThreadID()); if ( SDL_mutexP(mutex) < 0 ) { fprintf(stderr, "Couldn't lock mutex: %s", SDL_GetError()); exit(1); } printf("Process %u, working!\n", SDL_ThreadID()); SDL_Delay(1*1000); printf("Process %u, done!\n", SDL_ThreadID()); if ( SDL_mutexV(mutex) < 0 ) { fprintf(stderr, "Couldn't unlock mutex: %s", SDL_GetError()); exit(1); } /* If this sleep isn't done, then threads may starve */ SDL_Delay(10); } return(0); } int main(int argc, char *argv[]) { int i; int maxproc = 6; /* Load the SDL library */ if ( SDL_Init(0) < 0 ) { fprintf(stderr, "%s\n", SDL_GetError()); exit(1); } atexit(SDL_Quit); if ( (mutex=SDL_CreateMutex()) == NULL ) { fprintf(stderr, "Couldn't create mutex: %s\n", SDL_GetError()); exit(1); } mainthread = SDL_ThreadID(); printf("Main thread: %u\n", mainthread); atexit(printid); for ( i=0; i<maxproc; ++i ) { if ( (threads[i]=SDL_CreateThread(Run, NULL)) == NULL ) fprintf(stderr, "Couldn't create thread!\n"); } signal(SIGINT, terminate); Run(NULL); return(0); /* Never reached */ }