From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/10452 Path: news.gmane.org!.POSTED!not-for-mail From: Felix Janda Newsgroups: gmane.linux.lib.musl.general Subject: [PATCH RFC] add pthread_setname_np Date: Wed, 14 Sep 2016 23:02:16 -0400 Message-ID: <20160915030216.GA4535@nyan> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: blaine.gmane.org 1473909228 19266 195.159.176.226 (15 Sep 2016 03:13:48 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 15 Sep 2016 03:13:48 +0000 (UTC) User-Agent: Mutt/1.6.1 (2016-04-27) To: musl@lists.openwall.com Original-X-From: musl-return-10465-gllmg-musl=m.gmane.org@lists.openwall.com Thu Sep 15 05:13:44 2016 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by blaine.gmane.org with smtp (Exim 4.84_2) (envelope-from ) id 1bkN7E-0003IO-U5 for gllmg-musl@m.gmane.org; Thu, 15 Sep 2016 05:13:32 +0200 Original-Received: (qmail 20048 invoked by uid 550); 15 Sep 2016 03:13:33 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Original-Received: (qmail 20011 invoked from network); 15 Sep 2016 03:13:31 -0000 Resent-From: Felix Janda Resent-Date: Wed, 14 Sep 2016 23:12:41 -0400 Resent-Message-ID: <20160915031241.GA4594@nyan> Resent-To: musl@lists.openwall.com Mail-Followup-To: musl@lists.openwall.com Content-Disposition: inline Xref: news.gmane.org gmane.linux.lib.musl.general:10452 Archived-At: gdb's "info threads" displays the thread name. --- Should this function care about interrupted syscalls? --- include/pthread.h | 1 + src/thread/pthread_setname_np.c | 21 +++++++++++++++++++++ 2 files changed, 22 insertions(+) create mode 100644 src/thread/pthread_setname_np.c diff --git a/include/pthread.h b/include/pthread.h index 3d2e0c4..94ef919 100644 --- a/include/pthread.h +++ b/include/pthread.h @@ -214,6 +214,7 @@ struct cpu_set_t; int pthread_getaffinity_np(pthread_t, size_t, struct cpu_set_t *); int pthread_setaffinity_np(pthread_t, size_t, const struct cpu_set_t *); int pthread_getattr_np(pthread_t, pthread_attr_t *); +int pthread_setname_np(pthread_t, const char *); int pthread_tryjoin_np(pthread_t, void **); int pthread_timedjoin_np(pthread_t, void **, const struct timespec *); #endif diff --git a/src/thread/pthread_setname_np.c b/src/thread/pthread_setname_np.c new file mode 100644 index 0000000..b7f7a4b --- /dev/null +++ b/src/thread/pthread_setname_np.c @@ -0,0 +1,21 @@ +#include +#include +#include + +#include "pthread_impl.h" + +int pthread_setname_np(pthread_t thread, const char *name) +{ + int fd, status = 0; + char f[sizeof "/proc/self/task//comm" + 7]; + ssize_t len; + + if ((len = strlen(name)) > 15) return ERANGE; + + snprintf(f, sizeof f, "/proc/self/task/%d/comm", thread->tid); + if ((fd = open(f, O_WRONLY)) < 0) return errno; + if (write(fd, name, len) < 0) status = errno; + + close(fd); + return status; +} -- 2.7.3