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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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57
libc/thread/pthread_setname_np.c
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@ -16,6 +16,7 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/blockcancel.internal.h"
#include "libc/calls/calls.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
@ -28,30 +29,7 @@
#include "libc/sysv/consts/pr.h"
#include "libc/thread/posixthread.internal.h"
/**
* Registers custom name of thread with system, e.g.
*
* void *worker(void *arg) {
* pthread_setname_np(pthread_self(), "justine");
* pause();
* return 0;
* }
*
* int main(int argc, char *argv[]) {
* pthread_t id;
* pthread_create(&id, 0, worker, 0);
* pthread_join(id, 0);
* }
*
* ProTip: The `htop` software is good at displaying thread names.
*
* @return 0 on success, or errno on error
* @raise ERANGE if length of `name` exceeded system limit, in which
* case the name may have still been set with os using truncation
* @raise ENOSYS on MacOS, Windows, and OpenBSD
* @see pthread_getname_np()
*/
errno_t pthread_setname_np(pthread_t thread, const char *name) {
static errno_t pthread_setname_impl(pthread_t thread, const char *name) {
char path[128], *p;
int fd, rc, tid, len, e = errno;
@ -113,3 +91,34 @@ errno_t pthread_setname_np(pthread_t thread, const char *name) {
return ENOSYS;
}
}
/**
* Registers custom name of thread with system, e.g.
*
* void *worker(void *arg) {
* pthread_setname_np(pthread_self(), "justine");
* pause();
* return 0;
* }
*
* int main(int argc, char *argv[]) {
* pthread_t id;
* pthread_create(&id, 0, worker, 0);
* pthread_join(id, 0);
* }
*
* ProTip: The `htop` software is good at displaying thread names.
*
* @return 0 on success, or errno on error
* @raise ERANGE if length of `name` exceeded system limit, in which
* case the name may have still been set with os using truncation
* @raise ENOSYS on MacOS, Windows, and OpenBSD
* @see pthread_getname_np()
*/
errno_t pthread_setname_np(pthread_t thread, const char *name) {
errno_t rc;
BLOCK_CANCELLATIONS;
rc = pthread_setname_impl(thread, name);
ALLOW_CANCELLATIONS;
return rc;
}