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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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43
libc/thread/pthread_getname_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"
@ -28,23 +29,7 @@
#include "libc/sysv/consts/pr.h"
#include "libc/thread/posixthread.internal.h"
/**
* Gets name of thread registered with system, e.g.
*
* char name[64];
* pthread_getname_np(thread, name, sizeof(name));
*
* If the thread doesn't have a name, then empty string is returned.
* This implementation guarantees `buf` is always modified, even on
* error, and will always be nul-terminated. If `size` is 0 then this
* function returns 0. Your `buf` is also chomped to remove newlines.
*
* @return 0 on success, or errno on error
* @raise ERANGE if `size` wasn't large enough, in which case your
* result will still be returned truncated if possible
* @raise ENOSYS on MacOS, Windows, FreeBSD, and OpenBSD
*/
errno_t pthread_getname_np(pthread_t thread, char *name, size_t size) {
static errno_t pthread_getname_impl(pthread_t thread, char *name, size_t size) {
int fd, rc, tid, len, e = errno;
if (!size) return 0;
@ -113,3 +98,27 @@ errno_t pthread_getname_np(pthread_t thread, char *name, size_t size) {
return ENOSYS;
}
}
/**
* Gets name of thread registered with system, e.g.
*
* char name[64];
* pthread_getname_np(thread, name, sizeof(name));
*
* If the thread doesn't have a name, then empty string is returned.
* This implementation guarantees `buf` is always modified, even on
* error, and will always be nul-terminated. If `size` is 0 then this
* function returns 0. Your `buf` is also chomped to remove newlines.
*
* @return 0 on success, or errno on error
* @raise ERANGE if `size` wasn't large enough, in which case your
* result will still be returned truncated if possible
* @raise ENOSYS on MacOS, Windows, FreeBSD, and OpenBSD
*/
errno_t pthread_getname_np(pthread_t thread, char *name, size_t size) {
errno_t rc;
BLOCK_CANCELLATIONS;
rc = pthread_getname_impl(thread, name, size);
ALLOW_CANCELLATIONS;
return rc;
}