torturethread.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /* Simple test of the SDL threading code */
- #include <stdio.h>
- #include <stdlib.h>
- #include <signal.h>
- #include <string.h>
- #include "SDL.h"
- #include "SDL_thread.h"
- #define NUMTHREADS 10
- static char volatile time_for_threads_to_die[NUMTHREADS];
- int SubThreadFunc(void *data) {
- while(! *(int volatile *)data) {
- ; /*SDL_Delay(10); /* do nothing */
- }
- return 0;
- }
- int ThreadFunc(void *data) {
- SDL_Thread *sub_threads[NUMTHREADS];
- int flags[NUMTHREADS];
- int i;
- int tid = (int ) data;
- fprintf(stderr, "Creating Thread %dn", tid);
- for(i = 0; i < NUMTHREADS; i++) {
- flags[i] = 0;
- sub_threads[i] = SDL_CreateThread(SubThreadFunc, &flags[i]);
- }
- printf("Thread '%d' waiting for signaln", tid);
- while(time_for_threads_to_die[tid] != 1) {
- ; /* do nothing */
- }
- printf("Thread '%d' sending signals to subthreadsn", tid);
- for(i = 0; i < NUMTHREADS; i++) {
- flags[i] = 1;
- SDL_WaitThread(sub_threads[i], NULL);
- }
- printf("Thread '%d' exiting!n", tid);
- return 0;
- }
- int main(int argc, char *argv[])
- {
- SDL_Thread *threads[NUMTHREADS];
- int i;
- /* Load the SDL library */
- if ( SDL_Init(0) < 0 ) {
- fprintf(stderr, "Couldn't initialize SDL: %sn",SDL_GetError());
- exit(1);
- }
- atexit(SDL_Quit);
- signal(SIGSEGV, SIG_DFL);
- for(i = 0; i < NUMTHREADS; i++) {
- time_for_threads_to_die[i] = 0;
- threads[i] = SDL_CreateThread(ThreadFunc, (void *) i);
- if ( threads[i] == NULL ) {
- fprintf(stderr,
- "Couldn't create thread: %sn", SDL_GetError());
- exit(1);
- }
- }
- for(i = 0; i < NUMTHREADS; i++) {
- time_for_threads_to_die[i] = 1;
- }
- for(i = NUMTHREADS-1; i >= 0; --i) {
- SDL_WaitThread(threads[i], NULL);
- }
- return(0); /* Never reached */
- }