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Make futexes cancellable by pthreads

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Justine Tunney 2022-11-04 18:19:05 -07:00
parent 2278327eba
commit 022536cab6
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GPG key ID: BE714B4575D6E328
101 changed files with 627 additions and 391 deletions
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3
third_party/nsync/mem/nsync_wait.c vendored
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@ -15,6 +15,7 @@
│ See the License for the specific language governing permissions and │
│ limitations under the License. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/blockcancel.internal.h"
#include "libc/mem/mem.h"
#include "third_party/nsync/atomic.h"
#include "third_party/nsync/atomic.internal.h"
@ -36,6 +37,7 @@ int nsync_wait_n (void *mu, void (*lock) (void *), void (*unlock) (void *),
int count, struct nsync_waitable_s *waitable[]) {
int ready;
IGNORE_RACES_START ();
BLOCK_CANCELLATIONS; /* TODO(jart): Does this need pthread cancellations? */
for (ready = 0; ready != count &&
nsync_time_cmp ((*waitable[ready]->funcs->ready_time) (
waitable[ready]->v, NULL),
@ -102,6 +104,7 @@ int nsync_wait_n (void *mu, void (*lock) (void *), void (*unlock) (void *),
(*lock) (mu);
}
}
ALLOW_CANCELLATIONS;
IGNORE_RACES_END ();
return (ready);
}