From a032a6587011cbdac8c2f7e11f15dc4e592bbb55 Mon Sep 17 00:00:00 2001 From: Austin Foxley Date: Tue, 16 Feb 2010 12:27:18 -0800 Subject: mass sync with glibc nptl Signed-off-by: Austin Foxley --- libpthread/nptl/sysdeps/generic/lowlevellock.h | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-) (limited to 'libpthread/nptl/sysdeps/generic') diff --git a/libpthread/nptl/sysdeps/generic/lowlevellock.h b/libpthread/nptl/sysdeps/generic/lowlevellock.h index 7f95daada..0600e1794 100644 --- a/libpthread/nptl/sysdeps/generic/lowlevellock.h +++ b/libpthread/nptl/sysdeps/generic/lowlevellock.h @@ -1,4 +1,5 @@ -/* Copyright (C) 2002 Free Software Foundation, Inc. +/* Low level locking macros used in NPTL implementation. Stub version. + Copyright (C) 2002, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2002. @@ -20,16 +21,6 @@ #include -/* Implement generic mutex. Basic futex syscall support is required: - - lll_futex_wait(futex, value) - call sys_futex with FUTEX_WAIT - and third parameter VALUE - - lll_futex_wake(futex, value) - call sys_futex with FUTEX_WAKE - and third parameter VALUE -*/ - - /* Mutex lock counter: bit 31 clear means unlocked; bit 31 set means locked. @@ -65,7 +56,9 @@ __generic_mutex_lock (int *mutex) if (v >= 0) continue; - lll_futex_wait (mutex, v); + lll_futex_wait (mutex, v, + // XYZ check mutex flag + LLL_SHARED); } } @@ -81,7 +74,9 @@ __generic_mutex_unlock (int *mutex) /* There are other threads waiting for this mutex, wake one of them up. */ - lll_futex_wake (mutex, 1); + lll_futex_wake (mutex, 1, + // XYZ check mutex flag + LLL_SHARED); } -- cgit v1.2.3