mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
Cleanups. Define FUTEX_CMP_REQUEUE and lll_futex_requeue.
This commit is contained in:
parent
1c7c7e9095
commit
929340bf57
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
||||
|
||||
@ -35,6 +35,7 @@
|
||||
#define SYS_futex 202
|
||||
#define FUTEX_WAIT 0
|
||||
#define FUTEX_WAKE 1
|
||||
#define FUTEX_CMP_REQUEUE 4
|
||||
#define FUTEX_LOCK_PI 6
|
||||
#define FUTEX_UNLOCK_PI 7
|
||||
#define FUTEX_TRYLOCK_PI 8
|
||||
@ -150,7 +151,7 @@ LLL_STUB_UNWIND_INFO_END
|
||||
#define lll_futex_wait(futex, val) \
|
||||
({ \
|
||||
int __status; \
|
||||
register __typeof (val) _val asm ("edx") = (val); \
|
||||
register __typeof (val) _val __asm ("edx") = (val); \
|
||||
__asm __volatile ("xorq %%r10, %%r10\n\t" \
|
||||
"syscall" \
|
||||
: "=a" (__status) \
|
||||
@ -163,22 +164,22 @@ LLL_STUB_UNWIND_INFO_END
|
||||
|
||||
#define lll_futex_timed_wait(futex, val, timeout) \
|
||||
({ \
|
||||
register const struct timespec *__to __asm__ ("r10") = timeout; \
|
||||
register const struct timespec *__to __asm ("r10") = timeout; \
|
||||
int __status; \
|
||||
register __typeof (val) _val asm ("edx") = (val); \
|
||||
register __typeof (val) _val __asm ("edx") = (val); \
|
||||
__asm __volatile ("syscall" \
|
||||
: "=a" (__status) \
|
||||
: "0" (SYS_futex), "D" (futex), "S" (FUTEX_WAIT), \
|
||||
"d" (_val), "r" (__to) \
|
||||
: "memory", "cc", "r11", "cx"); \
|
||||
__status; \
|
||||
-__status; \
|
||||
})
|
||||
|
||||
|
||||
#define lll_futex_wake(futex, nr) \
|
||||
do { \
|
||||
int __ignore; \
|
||||
register __typeof (nr) _nr asm ("edx") = (nr); \
|
||||
register __typeof (nr) _nr __asm ("edx") = (nr); \
|
||||
__asm __volatile ("syscall" \
|
||||
: "=a" (__ignore) \
|
||||
: "0" (SYS_futex), "D" (futex), "S" (FUTEX_WAKE), \
|
||||
@ -423,6 +424,21 @@ extern int __lll_mutex_unlock_wait (int *__futex) attribute_hidden;
|
||||
: "cx", "r11", "cc", "memory"); })
|
||||
|
||||
|
||||
/* Returns non-zero if error happened, zero if success. */
|
||||
#define lll_futex_requeue(ftx, nr_wake, nr_move, mutex, val) \
|
||||
({ int __res; \
|
||||
register int __nr_move __asm ("r10") = nr_move; \
|
||||
register void *__mutex __asm ("r8") = mutex; \
|
||||
register int __val __asm ("r9") = val; \
|
||||
__asm __volatile ("syscall" \
|
||||
: "=a" (__res) \
|
||||
: "0" (__NR_futex), "D" ((void *) ftx), \
|
||||
"S" (FUTEX_CMP_REQUEUE), "d" (nr_wake), \
|
||||
"r" (__nr_move), "r" (__mutex), "r" (__val) \
|
||||
: "cx", "r11", "cc", "memory"); \
|
||||
__res < 0; })
|
||||
|
||||
|
||||
#define lll_mutex_islocked(futex) \
|
||||
(futex != LLL_MUTEX_LOCK_INITIALIZER)
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user