diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S index 95f8aabd11..67bec6caa7 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S @@ -111,6 +111,7 @@ __pthread_cond_timedwait: movq 8(%rsp), %rdi incq total_seq(%rdi) incl cond_futex(%rdi) + addl $(1 << clock_bits), cond_nwaiters(%rdi) /* Install cancellation handler. */ #ifdef PIC @@ -135,8 +136,9 @@ __pthread_cond_timedwait: /* Get the clock number. Note that the field in the condvar structure stores the number minus 1. */ movq 8(%rsp), %rdi - movl cond_clock(%rdi), %edi - /* Only clocks 0 and 1 are allowed. Both are handled in the + movl cond_nwaiters(%rdi), %edi + andl $((1 << clock_bits) - 1), %edi + /* Only clocks 0 and 1 are allowed so far. Both are handled in the kernel. */ leaq 24(%rsp), %rsi movq $__NR_clock_gettime, %rax @@ -244,7 +246,23 @@ __pthread_cond_timedwait: 9: xorq %r14, %r14 14: incq woken_seq(%rdi) -24: LOCK +24: subl $(1 << clock_bits), cond_nwaiters(%rdi) + + /* Wake up a thread which wants to destroy the condvar object. */ + cmpq $0xffffffffffffffff, total_seq(%rdi) + jne 25f + movl cond_nwaiters(%rdi), %eax + andl $~((1 << clock_bits) - 1), %eax + jne 25f + + addq $cond_nwaiters, %rdi + movq $SYS_futex, %rax + movq $FUTEX_WAKE, %rsi + movl $1, %edx + syscall + subq $cond_nwaiters, %rdi + +25: LOCK #if cond_lock == 0 decl (%rdi) #else |