mirror of
https://git.do.srb2.org/STJr/SRB2.git
synced 2024-12-22 10:40:56 +00:00
128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/*
|
|
Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely.
|
|
*/
|
|
|
|
/* Test the thread and mutex locking functions
|
|
Also exercises the system's signal/thread interaction
|
|
*/
|
|
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h> /* for atexit() */
|
|
|
|
#include "SDL.h"
|
|
|
|
static SDL_mutex *mutex = NULL;
|
|
static SDL_threadID mainthread;
|
|
static SDL_Thread *threads[6];
|
|
static SDL_atomic_t doterminate;
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
SDL_Log("Process %lu: exiting\n", SDL_ThreadID());
|
|
}
|
|
|
|
void
|
|
terminate(int sig)
|
|
{
|
|
signal(SIGINT, terminate);
|
|
SDL_AtomicSet(&doterminate, 1);
|
|
}
|
|
|
|
void
|
|
closemutex(int sig)
|
|
{
|
|
SDL_threadID id = SDL_ThreadID();
|
|
int i;
|
|
SDL_Log("Process %lu: Cleaning up...\n", id == mainthread ? 0 : id);
|
|
SDL_AtomicSet(&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 (!SDL_AtomicGet(&doterminate)) {
|
|
SDL_Log("Process %lu ready to work\n", SDL_ThreadID());
|
|
if (SDL_LockMutex(mutex) < 0) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't lock mutex: %s", SDL_GetError());
|
|
exit(1);
|
|
}
|
|
SDL_Log("Process %lu, working!\n", SDL_ThreadID());
|
|
SDL_Delay(1 * 1000);
|
|
SDL_Log("Process %lu, done!\n", SDL_ThreadID());
|
|
if (SDL_UnlockMutex(mutex) < 0) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "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 && SDL_AtomicGet(&doterminate)) {
|
|
SDL_Log("Process %lu: raising SIGTERM\n", SDL_ThreadID());
|
|
raise(SIGTERM);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int i;
|
|
int maxproc = 6;
|
|
|
|
/* Enable standard application logging */
|
|
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
|
|
|
|
/* Load the SDL library */
|
|
if (SDL_Init(0) < 0) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "%s\n", SDL_GetError());
|
|
exit(1);
|
|
}
|
|
atexit(SDL_Quit_Wrapper);
|
|
|
|
SDL_AtomicSet(&doterminate, 0);
|
|
|
|
if ((mutex = SDL_CreateMutex()) == NULL) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create mutex: %s\n", SDL_GetError());
|
|
exit(1);
|
|
}
|
|
|
|
mainthread = SDL_ThreadID();
|
|
SDL_Log("Main thread: %lu\n", mainthread);
|
|
atexit(printid);
|
|
for (i = 0; i < maxproc; ++i) {
|
|
char name[64];
|
|
SDL_snprintf(name, sizeof (name), "Worker%d", i);
|
|
if ((threads[i] = SDL_CreateThread(Run, name, NULL)) == NULL)
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread!\n");
|
|
}
|
|
signal(SIGINT, terminate);
|
|
Run(NULL);
|
|
|
|
return (0); /* Never reached */
|
|
}
|