Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Use _lwp_setname() to pass thread names to the kernel.

Browse Source
This commit is contained in:
ad 2007-11-07 00:55:22 +00:00
parent bdd61de26b
commit f63239c2a0
1 changed files with 16 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
lib/libpthread/pthread.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pthread.c,v 1.85 2007/10/16 15:07:02 ad Exp $ */
/* $NetBSD: pthread.c,v 1.86 2007/11/07 00:55:22 ad Exp $ */
/*-
* Copyright (c) 2001, 2002, 2003, 2006, 2007 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: pthread.c,v 1.85 2007/10/16 15:07:02 ad Exp $");
__RCSID("$NetBSD: pthread.c,v 1.86 2007/11/07 00:55:22 ad Exp $");
#define __EXPOSE_STACK 1
@ -428,15 +428,26 @@ pthread_create(pthread_t *thread, const pthread_attr_t *attr,
static void
pthread__create_tramp(void *(*start)(void *), void *arg)
{
pthread_t self;
void *retval;
/*
* Throw away some stack in a feeble attempt to reduce cache
* thrash. May help for SMT processors. XXX We should not
* be allocating stacks on fixed 2MB boundaries. Needs a
* thread register or decent thread local storage.
* thread register or decent thread local storage. Note
* that pt_lid may not be set by this point, but we don't
* care.
*/
(void)alloca(((unsigned)pthread__self()->pt_lid & 7) << 8);
self = pthread__self();
(void)alloca(((unsigned)self->pt_lid & 7) << 8);
if (self->pt_name != NULL) {
pthread_mutex_lock(&self->pt_lock);
if (self->pt_name != NULL)
(void)_lwp_setname(_lwp_self(), self->pt_name);
pthread_mutex_unlock(&self->pt_lock);
}
retval = (*start)(arg);
@ -667,6 +678,7 @@ pthread_setname_np(pthread_t thread, const char *name, void *arg)
pthread_mutex_lock(&thread->pt_lock);
oldname = thread->pt_name;
thread->pt_name = cp;
(void)_lwp_setname(thread->pt_lid, cp);
pthread_mutex_unlock(&thread->pt_lock);
if (oldname != NULL)