diff options
author | Ulrich Drepper <drepper@redhat.com> | 2007-08-11 18:50:51 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 2007-08-11 18:50:51 +0000 |
commit | 5bd8a24966df565ea992489eae95606bc522fe61 (patch) | |
tree | 4293de9ec1fd34c448f41d24a33e5ce1eed60812 /nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S | |
parent | 4503061fdc688c94caaf9ad4d011b0ccf574b500 (diff) | |
download | glibc-5bd8a24966df565ea992489eae95606bc522fe61.tar.gz glibc-5bd8a24966df565ea992489eae95606bc522fe61.tar.xz glibc-5bd8a24966df565ea992489eae95606bc522fe61.zip |
* pthreadP.h (PTHREAD_ROBUST_MUTEX_PSHARED): Define.
* pthread_mutex_lock.c: Use it instead of PTHREAD_MUTEX_PSHARED when dealing with robust mutexes. * pthread_mutex_timedlock.c: Likewise. * pthread_mutex_trylock.c: Likewise. * pthread_mutex_unlock.c: Likewise. * sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c: Likewise. 2007-08-06 Jakub Jelinek <jakub@redhat.com> * pthreadP.h (PTHREAD_MUTEX_PSHARED_BIT): Define. (PTHREAD_MUTEX_TYPE): Mask __kind with 127. (PTHREAD_MUTEX_PSHARED): Define. * pthread_mutex_init.c (__pthread_mutex_init): Set PTHREAD_MUTEX_PSHARED_BIT for pshared or robust mutexes. * pthread_mutex_lock.c (LLL_MUTEX_LOCK): Take mutex as argument instead of its __data.__lock field, pass PTHREAD_MUTEX_PSHARED as second argument to lll_lock. (LLL_MUTEX_TRYLOCK): Take mutex as argument instead of its __data.__lock field. (LLL_ROBUST_MUTEX_LOCK): Take mutex as argument instead of its __data.__lock field, pass PTHREAD_MUTEX_PSHARED as second argument to lll_robust_lock. (__pthread_mutex_lock): Update LLL_MUTEX_LOCK, LLL_MUTEX_TRYLOCK, LLL_ROBUST_MUTEX_LOCK users, use PTHREAD_MUTEX_TYPE (mutex) instead of mutex->__data.__kind directly, pass PTHREAD_MUTEX_PSHARED (mutex) to lll_unlock and lll_futex_wait. * pthread_mutex_trylock.c (__pthread_mutex_trylock): Use PTHREAD_MUTEX_TYPE (mutex) instead of mutex->__data.__kind directly, pass PTHREAD_MUTEX_PSHARED (mutex) to lll_unlock. (pthread_mutex_timedlock): Pass PTHREAD_MUTEX_PSHARED (mutex) to lll_timedlock, lll_robust_timedlock, lll_unlock and lll_futex_timed_wait. Use PTHREAD_MUTEX_TYPE (mutex) instead of mutex->__data.__kind directly. * pthread_mutex_timedlock.c (pthread_mutex_timedlock): Pass PTHREAD_MUTEX_PSHARED (mutex) to lll_timedlock, lll_robust_timedlock, lll_unlock and lll_futex_timed_wait. Use PTHREAD_MUTEX_TYPE (mutex) instead of mutex->__data.__kind directly. * pthread_mutex_unlock.c (__pthread_mutex_unlock_usercnt): Pass PTHREAD_MUTEX_PSHARED (mutex) to lll_unlock, lll_robust_unlock and lll_futex_wake. * pthread_mutex_setprioceiling.c (pthread_mutex_setprioceiling): Pass PTHREAD_MUTEX_PSHARED (mutex) to lll_futex_wait and lll_futex_wake. Use PTHREAD_MUTEX_TYPE (mutex) instead of mutex->__data.__kind directly. * sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c (LLL_MUTEX_LOCK): Take mutex as argument instead of its __data.__lock field, pass PTHREAD_MUTEX_PSHARED as second argument to lll_cond_lock. (LLL_MUTEX_TRYLOCK): Take mutex as argument instead of its __data.__lock field. (LLL_ROBUST_MUTEX_LOCK): Take mutex as argument instead of its __data.__lock field, pass PTHREAD_MUTEX_PSHARED as second argument to lll_robust_cond_lock. * pthread_cond_broadcast.c (__pthread_cond_broadcast): Add pshared variable, pass it to lll_lock, lll_unlock, lll_futex_requeue and lll_futex_wake. Don't use lll_futex_requeue if dependent mutex has PTHREAD_MUTEX_PSHARED_BIT bit set in its __data.__kind. * pthread_cond_destroy.c (__pthread_cond_destroy): Add pshared variable, pass it to lll_lock, lll_unlock, lll_futex_wake and lll_futex_wait. * pthread_cond_signal.c (__pthread_cond_signal): Add pshared variable, pass it to lll_lock, lll_unlock, lll_futex_wake_unlock and lll_futex_wake. * pthread_cond_timedwait.c (__pthread_cond_wait): Add pshared variable, pass it to lll_lock, lll_unlock, lll_futex_timedwait and lll_futex_wake. * pthread_cond_wait.c (__condvar_cleanup, __pthread_cond_wait): Add pshared variable, pass it to lll_lock, lll_unlock, lll_futex_wait and lll_futex_wake. * sysdeps/unix/sysv/linux/alpha/lowlevellock.h (lll_futex_requeue, lll_futex_wake_unlock): Add private argument, use __lll_private_flag macro. * sysdeps/unix/sysv/linux/ia64/lowlevellock.h (lll_futex_requeue, lll_futex_wake_unlock): Likewise. * sysdeps/unix/sysv/linux/powerpc/lowlevellock.h (lll_futex_requeue): Likewise. * sysdeps/unix/sysv/linux/sparc/lowlevellock.h (lll_futex_requeue, lll_futex_wake_unlock): Likewise. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (lll_futex_requeue): Likewise. * sysdeps/unix/sysv/linux/s390/lowlevellock.h (lll_futex_requeue, lll_futex_wake_unlock): Likewise. (lll_futex_wake): Fix a typo. * sysdeps/unix/sysv/linux/pthread-pi-defines.sym (PS_BIT): Add. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S (__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. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S (__pthread_cond_signal): Pass LLL_PRIVATE to lll_* and or FUTEX_PRIVATE_FLAG into SYS_futex op if cv is process private. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S (__pthread_cond_timedwait): Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: (__condvar_cleanup, __pthread_cond_wait): Likewise.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S | 84 |
1 files changed, 68 insertions, 16 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S index 34ef2c7b77..db2683b87b 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S @@ -49,8 +49,10 @@ __condvar_cleanup: #if cond_lock != 0 addq $cond_lock, %rdi #endif - /* XYZ */ + cmpq $-1, dep_mutex-cond_lock(%rdi) + movl $LLL_PRIVATE, %eax movl $LLL_SHARED, %esi + cmovne %eax, %esi callq __lll_lock_wait #if cond_lock != 0 subq $cond_lock, %rdi @@ -81,9 +83,19 @@ __condvar_cleanup: jne 4f addq $cond_nwaiters, %rdi - movl $SYS_futex, %eax - movl $FUTEX_WAKE, %esi + cmpq $-1, dep_mutex-cond_nwaiters(%rdi) movl $1, %edx +#ifdef __ASSUME_PRIVATE_FUTEX + movl $FUTEX_WAKE, %eax + movl $(FUTEX_WAKE|FUTEX_PRIVATE_FLAG), %esi + cmove %eax, %esi +#else + movl $0, %eax + movl %fs:PRIVATE_FUTEX, %esi + cmove %eax, %esi + orl $FUTEX_WAKE, %esi +#endif + movl $SYS_futex, %eax syscall subq $cond_nwaiters, %rdi movl $1, %r12d @@ -98,16 +110,28 @@ __condvar_cleanup: #if cond_lock != 0 addq $cond_lock, %rdi #endif - /* XYZ */ + cmpq $-1, dep_mutex-cond_lock(%rdi) + movl $LLL_PRIVATE, %eax movl $LLL_SHARED, %esi + cmovne %eax, %esi callq __lll_unlock_wake /* Wake up all waiters to make sure no signal gets lost. */ 2: testq %r12, %r12 jnz 5f addq $cond_futex, %rdi - movl $FUTEX_WAKE, %esi + cmpq $-1, dep_mutex-cond_futex(%rdi) movl $0x7fffffff, %edx +#ifdef __ASSUME_PRIVATE_FUTEX + movl $FUTEX_WAKE, %eax + movl $(FUTEX_WAKE|FUTEX_PRIVATE_FLAG), %esi + cmove %eax, %esi +#else + movl $0, %eax + movl %fs:PRIVATE_FUTEX, %esi + cmove %eax, %esi + orl $FUTEX_WAKE, %esi +#endif movl $SYS_futex, %eax syscall @@ -216,12 +240,20 @@ __pthread_cond_wait: xorq %r10, %r10 movq %r12, %rdx addq $cond_futex-cond_lock, %rdi - movl $SYS_futex, %eax -#if FUTEX_WAIT == 0 - xorl %esi, %esi + cmpq $-1, dep_mutex-cond_futex(%rdi) +#ifdef __ASSUME_PRIVATE_FUTEX + movl $FUTEX_WAIT, %eax + movl $(FUTEX_WAIT|FUTEX_PRIVATE_FLAG), %esi + cmove %eax, %esi #else - movl $FUTEX_WAIT, %esi + movl $FUTEX_WAIT, %eax + movl %fs:PRIVATE_FUTEX, %esi + cmove %eax, %esi +# if FUTEX_WAIT != 0 + orl $FUTEX_WAIT, %esi +# endif #endif + movl $SYS_futex, %eax syscall movl (%rsp), %edi @@ -267,9 +299,19 @@ __pthread_cond_wait: jne 17f addq $cond_nwaiters, %rdi - movl $SYS_futex, %eax - movl $FUTEX_WAKE, %esi + cmpq $-1, dep_mutex-cond_nwaiters(%rdi) movl $1, %edx +#ifdef __ASSUME_PRIVATE_FUTEX + movl $FUTEX_WAKE, %eax + movl $(FUTEX_WAKE|FUTEX_PRIVATE_FLAG), %esi + cmove %eax, %esi +#else + movl $0, %eax + movl %fs:PRIVATE_FUTEX, %esi + cmove %eax, %esi + orl $FUTEX_WAKE, %esi +#endif + movl $SYS_futex, %eax syscall subq $cond_nwaiters, %rdi @@ -302,8 +344,10 @@ __pthread_cond_wait: #if cond_lock != 0 addq $cond_lock, %rdi #endif - /* XYZ */ + cmpq $-1, dep_mutex-cond_lock(%rdi) + movl $LLL_PRIVATE, %eax movl $LLL_SHARED, %esi + cmovne %eax, %esi callq __lll_lock_wait jmp 2b @@ -312,8 +356,10 @@ __pthread_cond_wait: #if cond_lock != 0 addq $cond_lock, %rdi #endif - /* XYZ */ + cmpq $-1, dep_mutex-cond_lock(%rdi) + movl $LLL_PRIVATE, %eax movl $LLL_SHARED, %esi + cmovne %eax, %esi callq __lll_unlock_wake jmp 4b @@ -322,8 +368,10 @@ __pthread_cond_wait: #if cond_lock != 0 addq $cond_lock, %rdi #endif - /* XYZ */ + cmpq $-1, dep_mutex-cond_lock(%rdi) + movl $LLL_PRIVATE, %eax movl $LLL_SHARED, %esi + cmovne %eax, %esi callq __lll_lock_wait #if cond_lock != 0 subq $cond_lock, %rdi @@ -335,8 +383,10 @@ __pthread_cond_wait: #if cond_lock != 0 addq $cond_lock, %rdi #endif - /* XYZ */ + cmpq $-1, dep_mutex-cond_lock(%rdi) + movl $LLL_PRIVATE, %eax movl $LLL_SHARED, %esi + cmovne %eax, %esi callq __lll_unlock_wake jmp 11b @@ -354,8 +404,10 @@ __pthread_cond_wait: #if cond_lock != 0 addq $cond_lock, %rdi #endif - /* XYZ */ + cmpq $-1, dep_mutex-cond_lock(%rdi) + movl $LLL_PRIVATE, %eax movl $LLL_SHARED, %esi + cmovne %eax, %esi callq __lll_unlock_wake 13: movq %r10, %rax |