Mercurial > sdl-ios-xcode
view test/testsem.c @ 907:3bd4d7a1ee04
Date: Mon, 21 Jun 2004 16:52:47 +0200
From: Marcin Konicki
Subject: SDL 1.2.7 patch for BeOS (new input handling code)
I rewrote input handling code for BeOS. It should be faster now (i got
report that mouse is faster, keyboard should be too, but it's harder to
observe).
I'll try to add mouse wheel support too, soon.
Stefano Ceccherini (a.k.a Jack Burton) helped me beautify code (working
version was less clean), and it was he who asked me to write this thing ;).
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 18 Jul 2004 19:36:06 +0000 |
parents | 74212992fb08 |
children | be9c9c8f6d53 |
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/* Simple test of the SDL semaphore code */ #include <stdio.h> #include <stdlib.h> #include <signal.h> #include "SDL.h" #include "SDL_thread.h" #define NUM_THREADS 10 static SDL_sem *sem; int alive = 1; int ThreadFunc(void *data) { while ( alive ) { SDL_SemWait(sem); fprintf(stderr, "Thread number %d has got the semaphore (value = %d)!\n", (int)data, SDL_SemValue(sem)); SDL_Delay(200); SDL_SemPost(sem); fprintf(stderr, "Thread number %d has released the semaphore (value = %d)!\n", (int)data, SDL_SemValue(sem)); SDL_Delay(1); /* For the scheduler */ } printf("Thread number %d exiting.\n", (int)data); return 0; } static void killed(int sig) { alive = 0; } int main(int argc, char **argv) { SDL_Thread *threads[NUM_THREADS]; int i, init_sem; if(argc < 2) { fprintf(stderr,"Usage: %s init_value\n", argv[0]); exit(1); } /* Load the SDL library */ if ( SDL_Init(0) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); exit(1); } atexit(SDL_Quit); signal(SIGTERM, killed); signal(SIGINT, killed); init_sem = atoi(argv[1]); sem = SDL_CreateSemaphore(init_sem); printf("Running %d threads, semaphore value = %d\n", NUM_THREADS, init_sem); /* Create all the threads */ for( i = 0; i < NUM_THREADS; ++i ) { threads[i] = SDL_CreateThread(ThreadFunc, (void*)i); } /* Wait 10 seconds */ SDL_Delay(10 * 1000); /* Wait for all threads to finish */ printf("Waiting for threads to finish\n"); alive = 0; for( i = 0; i < NUM_THREADS; ++i ) { SDL_WaitThread(threads[i], NULL); } printf("Finished waiting for threads\n"); SDL_DestroySemaphore(sem); return(0); }