This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
testthread.c
1
2
3
4
5
6
7
8
9
10
11
12
/* Simple test of the SDL threading code */
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "SDL.h"
#include "SDL_thread.h"
static int alive = 0;
13
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
14
15
static void
quit(int rc)
17
18
SDL_Quit();
exit(rc);
21
22
int SDLCALL
ThreadFunc(void *data)
24
printf("Started thread %s: My thread id is %lu\n",
25
26
27
28
29
30
31
(char *) data, SDL_ThreadID());
while (alive) {
printf("Thread '%s' is alive!\n", (char *) data);
SDL_Delay(1 * 1000);
}
printf("Thread '%s' exiting!\n", (char *) data);
return (0);
32
33
}
34
35
static void
killed(int sig)
37
38
39
40
printf("Killed with SIGTERM, waiting 5 seconds to exit\n");
SDL_Delay(5 * 1000);
alive = 0;
quit(0);
41
42
}
43
44
int
main(int argc, char *argv[])
46
SDL_Thread *thread;
48
49
50
51
52
/* Load the SDL library */
if (SDL_Init(0) < 0) {
fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
return (1);
}
54
55
56
57
58
59
60
61
62
63
alive = 1;
thread = SDL_CreateThread(ThreadFunc, "#1");
if (thread == NULL) {
fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
quit(1);
}
SDL_Delay(5 * 1000);
printf("Waiting for thread #1\n");
alive = 0;
SDL_WaitThread(thread, NULL);
65
66
alive = 1;
signal(SIGTERM, killed);
67
thread = SDL_CreateThread(ThreadFunc, "#2");
68
69
70
71
72
if (thread == NULL) {
fprintf(stderr, "Couldn't create thread: %s\n", SDL_GetError());
quit(1);
}
raise(SIGTERM);
74
75
SDL_Quit(); /* Never reached */
return (0); /* Never reached */