test/torturethread.c
changeset 0 74212992fb08
child 1151 be9c9c8f6d53
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/torturethread.c	Thu Apr 26 16:45:43 2001 +0000
@@ -0,0 +1,85 @@
+
+/* 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 %d\n", tid);
+
+	for(i = 0; i < NUMTHREADS; i++) {
+		flags[i] = 0;
+		sub_threads[i] = SDL_CreateThread(SubThreadFunc, &flags[i]);
+	}
+
+	printf("Thread '%d' waiting for signal\n", tid);
+	while(time_for_threads_to_die[tid] != 1) {
+		; /* do nothing */
+	}
+
+	printf("Thread '%d' sending signals to subthreads\n", 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: %s\n",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: %s\n", 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 */
+}