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Make more improvements to threading support

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- fix rare thread exit race condition on openbsd
- pthread_getattr_np() now supplies detached status
- child threads may now pthread_join() the main thread
- introduce sigandset(), sigorset(), and sigisemptyset()
- introduce pthread_cleanup_push() and pthread_cleanup_pop()
This commit is contained in:
Justine Tunney 2022-10-08 23:54:05 -07:00
parent 38df0a4186
commit 4a6fd3d910
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GPG key ID: BE714B4575D6E328
52 changed files with 586 additions and 241 deletions
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8
libc/thread/pthread_ungarbage.c
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@ -16,17 +16,17 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/mem/mem.h"
#include "libc/nexgen32e/gc.internal.h"
#include "libc/thread/tls.h"
void _pthread_ungarbage(void) {
int i;
struct Garbages *g;
if ((g = __get_tls()->tib_garbages)) {
// _pthread_exit() uses _gclongjmp() so if this assertion fails,
// then the likely cause is the thread used gc() with longjmp().
assert(!g->i);
for (i = g->i; i--;) {
((void (*)(intptr_t))g->p[i].fn)(g->p[i].arg);
}
free(g->p);
free(g);
}