Mercurial > sdl-ios-xcode
view test/testlock.c @ 2947:fec0db6c44b7
Date: Thu, 01 Jan 2009 21:32:12 +0100
From: Couriersud
Subject: Fusionsound audio driver
attached is a diff containing a audio driver for the FusionSound
library. This sound library is closely related to DirectFB and uses the
same transport (fusion) as DirectFB when running applications "remote",
i.e. over the network. As such, it natively redirects sound where
DirectFB redirects video. This may be handy for everyone using SDL over
DirectFB.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Thu, 01 Jan 2009 21:34:22 +0000 |
parents | 4436464c4f51 |
children | 0d1b16ee0bca |
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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 "SDL.h" #include "SDL_mutex.h" #include "SDL_thread.h" static SDL_mutex *mutex = NULL; static Uint32 mainthread; static SDL_Thread *threads[6]; static volatile int doterminate = 0; /* * SDL_Quit() shouldn't be used with atexit() directly because * calling conventions may differ... */ static void SDL_Quit_Wrapper(void) { SDL_Quit(); } void printid(void) { printf("Process %u: exiting\n", SDL_ThreadID()); } void terminate(int sig) { signal(SIGINT, terminate); doterminate = 1; } void closemutex(int sig) { Uint32 id = SDL_ThreadID(); int i; printf("Process %u: Cleaning up...\n", id == mainthread ? 0 : id); doterminate = 1; for (i = 0; i < 6; ++i) SDL_WaitThread(threads[i], NULL); SDL_DestroyMutex(mutex); exit(sig); } int SDLCALL Run(void *data) { if (SDL_ThreadID() == mainthread) signal(SIGTERM, closemutex); while (!doterminate) { 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); } if (SDL_ThreadID() == mainthread && doterminate) { printf("Process %u: raising SIGTERM\n", SDL_ThreadID()); raise(SIGTERM); } 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_Wrapper); 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 */ }