Mercurial > sdl-ios-xcode
view test/testlock.c @ 4525:3abf0b9cafad
pelya 2010-07-12 03:53:48 PDT
In function GLES_RenderCopy() in SDL_renderer_gles.c:819 there is one memcpy()
that can be avoided if we're updating whole texture.
Because of that the SDL 1.3 in compatibility mode is working even slower than
software rendering in SDL 1.2.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 14 Jul 2010 07:31:35 -0700 |
parents | 0d1b16ee0bca |
children |
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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 SDL_threadID 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 %lu: exiting\n", SDL_ThreadID()); } void terminate(int sig) { signal(SIGINT, terminate); doterminate = 1; } void closemutex(int sig) { SDL_threadID id = SDL_ThreadID(); int i; printf("Process %lu: 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 %lu ready to work\n", SDL_ThreadID()); if (SDL_mutexP(mutex) < 0) { fprintf(stderr, "Couldn't lock mutex: %s", SDL_GetError()); exit(1); } printf("Process %lu, working!\n", SDL_ThreadID()); SDL_Delay(1 * 1000); printf("Process %lu, 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 %lu: 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: %lu\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 */ }