diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h index e462776c02..6ed21fdc14 100644 --- a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. +/* Copyright (C) 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. @@ -31,6 +31,9 @@ #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 +/* Delay in spinlock loop. */ +#define BUSY_WAIT_NOP asm ("hint @pause") + /* Initializer for compatibility lock. */ #define LLL_MUTEX_LOCK_INITIALIZER (0) @@ -62,6 +65,11 @@ #define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex)) +#define __lll_mutex_cond_trylock(futex) \ + (atomic_compare_and_exchange_val_acq (futex, 2, 0) != 0) +#define lll_mutex_cond_trylock(futex) __lll_mutex_cond_trylock (&(futex)) + + extern void __lll_lock_wait (int *futex) attribute_hidden; |