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Implemented an API for thread-local storage: SDL_TLSCreate(), SDL_TLSSet(), SDL_TLSGet()

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This commit is contained in:
Sam Lantinga 2013-07-10 02:32:04 -07:00
parent ab91b4ce14
commit bfcb08d569
14 changed files with 618 additions and 156 deletions
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13
test/testthread.c
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@ -19,6 +19,7 @@
#include "SDL.h"
#include "SDL_thread.h"
static SDL_TLSID tls;
static int alive = 0;
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
@ -32,8 +33,9 @@ quit(int rc)
int SDLCALL
ThreadFunc(void *data)
{
printf("Started thread %s: My thread id is %lu\n",
(char *) data, SDL_ThreadID());
SDL_TLSSet(tls, "baby thread");
printf("Started thread %s: My thread id is %lu, thread data = %s\n",
(char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
while (alive) {
printf("Thread '%s' is alive!\n", (char *) data);
SDL_Delay(1 * 1000);
@ -62,6 +64,11 @@ main(int argc, char *argv[])
return (1);
}
tls = SDL_TLSCreate();
SDL_assert(tls);
SDL_TLSSet(tls, "main thread");
printf("Main thread data initially: %s\n", (const char *)SDL_TLSGet(tls));
alive = 1;
thread = SDL_CreateThread(ThreadFunc, "One", "#1");
if (thread == NULL) {
@ -73,6 +80,8 @@ main(int argc, char *argv[])
alive = 0;
SDL_WaitThread(thread, NULL);
printf("Main thread data finally: %s\n", (const char *)SDL_TLSGet(tls));
alive = 1;
signal(SIGTERM, killed);
thread = SDL_CreateThread(ThreadFunc, "Two", "#2");