VFSZipFileTLS* vfs_zipfile_get_tls(VFSNode *node, bool create) {
VFSZipFileData *zdata = node->data1;
VFSZipFileTLS *tls = SDL_TLSGet(zdata->tls_id);
if(tls || !create) {
return tls;
}
tls = calloc(1, sizeof(VFSZipFileTLS));
SDL_TLSSet(zdata->tls_id, tls, (void(*)(void*))vfs_zipfile_free_tls);
zip_source_t *src = zip_source_function_create(vfs_zipfile_srcfunc, node, &tls->error);
zip_t *zip = tls->zip = zip_open_from_source(src, ZIP_RDONLY, &tls->error);
// FIXME: Taisei currently doesn't handle zip files without explicit directory entries correctly (file listing will not work)
if(!zip) {
char *r = vfs_node_repr(zdata->source, true);
vfs_set_error("Failed to open zip archive '%s': %s", r, zip_error_strerror(&tls->error));
free(r);
vfs_zipfile_free_tls(tls);
SDL_TLSSet(zdata->tls_id, 0, NULL);
zip_source_free(src);
return NULL;
}
return tls;
}
/* Routine to get the thread-specific error variable */
SDL_error *
SDL_GetErrBuf(void)
{
static SDL_SpinLock tls_lock;
static SDL_bool tls_being_created;
static SDL_TLSID tls_errbuf;
static SDL_error SDL_global_errbuf;
const SDL_error *ALLOCATION_IN_PROGRESS = (SDL_error *)-1;
SDL_error *errbuf;
/* tls_being_created is there simply to prevent recursion if SDL_TLSCreate() fails.
It also means it's possible for another thread to also use SDL_global_errbuf,
but that's very unlikely and hopefully won't cause issues.
*/
if (!tls_errbuf && !tls_being_created) {
SDL_AtomicLock(&tls_lock);
if (!tls_errbuf) {
SDL_TLSID slot;
tls_being_created = SDL_TRUE;
slot = SDL_TLSCreate();
tls_being_created = SDL_FALSE;
SDL_MemoryBarrierRelease();
tls_errbuf = slot;
}
SDL_AtomicUnlock(&tls_lock);
}
if (!tls_errbuf) {
return &SDL_global_errbuf;
}
SDL_MemoryBarrierAcquire();
errbuf = (SDL_error *)SDL_TLSGet(tls_errbuf);
if (errbuf == ALLOCATION_IN_PROGRESS) {
return &SDL_global_errbuf;
}
if (!errbuf) {
/* Mark that we're in the middle of allocating our buffer */
SDL_TLSSet(tls_errbuf, ALLOCATION_IN_PROGRESS, NULL);
errbuf = (SDL_error *)SDL_malloc(sizeof(*errbuf));
if (!errbuf) {
SDL_TLSSet(tls_errbuf, NULL, NULL);
return &SDL_global_errbuf;
}
SDL_zerop(errbuf);
SDL_TLSSet(tls_errbuf, errbuf, SDL_free);
}
return errbuf;
}
int
main(int argc, char *argv[])
{
int arg = 1;
SDL_Thread *thread;
/* 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, "Couldn't initialize SDL: %s\n", SDL_GetError());
return (1);
}
while (argv[arg] && *argv[arg] == '-') {
if (SDL_strcmp(argv[arg], "--prio") == 0) {
testprio = 1;
}
++arg;
}
tls = SDL_TLSCreate();
SDL_assert(tls);
SDL_TLSSet(tls, "main thread", NULL);
SDL_Log("Main thread data initially: %s\n", (const char *)SDL_TLSGet(tls));
alive = 1;
thread = SDL_CreateThread(ThreadFunc, "One", "#1");
if (thread == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
quit(1);
}
SDL_Delay(5 * 1000);
SDL_Log("Waiting for thread #1\n");
alive = 0;
SDL_WaitThread(thread, NULL);
SDL_Log("Main thread data finally: %s\n", (const char *)SDL_TLSGet(tls));
alive = 1;
signal(SIGTERM, killed);
thread = SDL_CreateThread(ThreadFunc, "Two", "#2");
if (thread == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create thread: %s\n", SDL_GetError());
quit(1);
}
raise(SIGTERM);
SDL_Quit(); /* Never reached */
return (0); /* Never reached */
}
int SDLCALL
ThreadFunc(void *data)
{
SDL_TLSSet(tls, "baby thread", NULL);
SDL_Log("Started thread %s: My thread id is %lu, thread data = %s\n",
(char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
while (alive) {
SDL_Log("Thread '%s' is alive!\n", (char *) data);
SDL_Delay(1 * 1000);
}
SDL_Log("Thread '%s' exiting!\n", (char *) data);
return (0);
}
int SDLCALL
ThreadFunc(void *data)
{
SDL_ThreadPriority prio = SDL_THREAD_PRIORITY_NORMAL;
SDL_TLSSet(tls, "baby thread", NULL);
SDL_Log("Started thread %s: My thread id is %lu, thread data = %s\n",
(char *) data, SDL_ThreadID(), (const char *)SDL_TLSGet(tls));
while (alive) {
SDL_Log("Thread '%s' is alive!\n", (char *) data);
if (testprio) {
SDL_Log("SDL_SetThreadPriority(%s):%d\n", getprioritystr(prio), SDL_SetThreadPriority(prio));
if (++prio > SDL_THREAD_PRIORITY_TIME_CRITICAL)
prio = SDL_THREAD_PRIORITY_LOW;
}
SDL_Delay(1 * 1000);
}
SDL_Log("Thread '%s' exiting!\n", (char *) data);
return (0);
}
static void vfs_zipfile_free(VFSNode *node) {
if(node) {
VFSZipFileData *zdata = node->data1;
if(zdata) {
SDL_TLSID tls_id = ((VFSZipFileData*)node->data1)->tls_id;
VFSZipFileTLS *tls = SDL_TLSGet(tls_id);
if(tls) {
vfs_zipfile_free_tls(tls);
SDL_TLSSet(tls_id, NULL, NULL);
}
if(zdata->source) {
vfs_decref(zdata->source);
}
ht_destroy(&zdata->pathmap);
free(zdata);
}
}
}
