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(__pthread_cond_broadcast): Pass LLL_PRIVATE to lll_* and or FUTEX_PRIVATE_FLAG into SYS_futex op if cv is process private. Don't use FUTEX_CMP_REQUEUE if dep_mutex is not process private.

This commit is contained in:
Ulrich Drepper 2007-08-15 06:39:43 +00:00
parent 467d1345e0
commit c20455999c
1 changed files with 50 additions and 4 deletions
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54
nptl/sysdeps/unix/sysv/linux/sh/pthread_cond_broadcast.S
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@ -93,13 +93,24 @@ __pthread_cond_broadcast:
bt/s 9f
add #cond_futex, r4
/* XXX: The kernel so far doesn't support requeue to PI futex. */
/* XXX: The kernel only supports FUTEX_CMP_REQUEUE to the same
type of futex (private resp. shared). */
mov.l @(MUTEX_KIND,r9), r0
tst #PI_BIT, r0
tst #(PI_BIT|PS_BIT), r0
bf 9f
/* Wake up all threads. */
mov #FUTEX_CMP_REQUEUE, r5
#ifdef __ASSUME_PRIVATE_FUTEX
mov #(FUTEX_CMP_REQUEUE|FUTEX_PRIVATE_FLAG), r5
extu.b r5, r5
#else
stc gbr, r1
mov.w .Lpfoff, r2
add r2, r1
mov.l @r1, r5
mov #FUTEX_CMP_REQUEUE, r0
or r0, r5
#endif
mov #1, r6
mov #-1, r7
shlr r7 /* r7 = 0x7fffffff */
@ -156,7 +167,12 @@ __pthread_cond_broadcast:
#if cond_lock != 0
add #cond_lock, r5
#endif
mov.l @(dep_mutex,r8), r0
cmp/eq #-1, r0
bf/s 99f
mov #LLL_PRIVATE, r6
mov #LLL_SHARED, r6
99:
extu.b r6, r6
mov.l .Lwait5, r1
bsrf r1
@ -171,7 +187,12 @@ __pthread_cond_broadcast:
#if cond_lock != 0
add #cond_lock, r4
#endif
mov.l @(dep_mutex,r8), r0
cmp/eq #-1, r0
bf/s 99f
mov #LLL_PRIVATE, r5
mov #LLL_SHARED, r5
99:
mov.l .Lwake5, r1
bsrf r1
extu.b r5, r5
@ -185,7 +206,12 @@ __pthread_cond_broadcast:
#if cond_lock != 0
add #cond_lock, r4
#endif
mov #-1, r0
cmp/eq r0, r9
bf/s 99f
mov #LLL_PRIVATE, r5
mov #LLL_SHARED, r5
99:
mov.l .Lwake6, r1
bsrf r1
extu.b r5, r5
@ -194,7 +220,22 @@ __pthread_cond_broadcast:
nop
9:
mov #FUTEX_WAKE, r5
mov #-1, r0
cmp/eq r0, r9
bt/s 99f
mov #FUTEX_WAKE, r5
#ifdef __ASSUME_PRIVATE_FUTEX
mov #(FUTEX_WAKE|FUTEX_PRIVATE_FLAG), r5
extu.b r5, r5
#else
stc gbr, r1
mov.w .Lpfoff, r2
add r2, r1
mov.l @r1, r5
mov #FUTEX_WAKE, r0
or r0, r5
#endif
99:
mov #-1, r6
shlr r6 /* r6 = 0x7fffffff */
mov #0, r7
@ -205,6 +246,11 @@ __pthread_cond_broadcast:
bra 10b
nop
#ifndef __ASSUME_PRIVATE_FUTEX
.Lpfoff:
.word PRIVATE_FUTEX - TLS_PRE_TCB_SIZE
#endif
.align 2
.Lwait5:
.long __lll_lock_wait-.Lwait5b