diff options
Diffstat (limited to 'libpthread/nptl/pthread_barrier_init.c')
| -rw-r--r-- | libpthread/nptl/pthread_barrier_init.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/libpthread/nptl/pthread_barrier_init.c b/libpthread/nptl/pthread_barrier_init.c index 98a7ecc3f..f0396f929 100644 --- a/libpthread/nptl/pthread_barrier_init.c +++ b/libpthread/nptl/pthread_barrier_init.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -20,6 +20,13 @@ #include <errno.h> #include "pthreadP.h" #include <lowlevellock.h> +#include <bits/kernel-features.h> + + +static const struct pthread_barrierattr default_attr = + { + .pshared = PTHREAD_PROCESS_PRIVATE + }; int @@ -33,17 +40,15 @@ pthread_barrier_init ( if (__builtin_expect (count == 0, 0)) return EINVAL; - if (attr != NULL) - { - struct pthread_barrierattr *iattr; - - iattr = (struct pthread_barrierattr *) attr; + const struct pthread_barrierattr *iattr + = (attr != NULL + ? iattr = (struct pthread_barrierattr *) attr + : &default_attr); - if (iattr->pshared != PTHREAD_PROCESS_PRIVATE - && __builtin_expect (iattr->pshared != PTHREAD_PROCESS_SHARED, 0)) - /* Invalid attribute. */ - return EINVAL; - } + if (iattr->pshared != PTHREAD_PROCESS_PRIVATE + && __builtin_expect (iattr->pshared != PTHREAD_PROCESS_SHARED, 0)) + /* Invalid attribute. */ + return EINVAL; ibarrier = (struct pthread_barrier *) barrier; @@ -53,5 +58,14 @@ pthread_barrier_init ( ibarrier->init_count = count; ibarrier->curr_event = 0; +#ifdef __ASSUME_PRIVATE_FUTEX + ibarrier->private = (iattr->pshared != PTHREAD_PROCESS_PRIVATE + ? 0 : FUTEX_PRIVATE_FLAG); +#else + ibarrier->private = (iattr->pshared != PTHREAD_PROCESS_PRIVATE + ? 0 : THREAD_GETMEM (THREAD_SELF, + header.private_futex)); +#endif + return 0; } |