1481,6 → 1481,8 |
ret |
|
align 4 |
;ecx futex handle |
;edx new value |
.futex_wait: |
cmp ecx, 3 |
jb .epicfail |
1496,13 → 1498,14 |
jne .epicfail |
|
mov ecx, [edi+FUTEX.pointer] |
mov edx, 1 |
mov eax, [ecx] |
test eax, eax |
jnz .wait_slow |
lock cmpxchg [ecx], edx |
jz .ok |
|
mov eax, edx |
lock cmpxchg [ecx], edx ;wait until old_value == new_value |
jz .wait_slow |
|
mov [esp+SYSCALL_STACK._eax], 0 |
ret |
|
.wait_slow: |
pushfd |
cli |
1518,25 → 1521,56 |
.again: |
call change_task |
|
mov eax, [ecx] |
test eax, eax |
jnz .again |
lock cmpxchg [ecx], edx |
jnz .again |
jz .again |
|
list_del esp |
add esp, sizeof.MUTEX_WAITER |
|
popfd |
.ok: |
mov [esp+32], eax |
mov [esp+SYSCALL_STACK._eax], 0 |
ret |
|
.epicfail: |
mov [esp+32], dword -1 |
mov [esp+SYSCALL_STACK._eax], -1 |
ret |
|
align 4 |
.futex_wake: |
cmp ecx, 3 |
jb .epicfail |
cmp ecx, (PROC.pdt_0 - PROC.htab)/4 |
jae .epicfail |
|
mov esi, [current_process] |
mov edi, [esi+PROC.htab+ecx*4] |
|
cmp [edi+FUTEX.magic], 'FUTX' |
jne .epicfail |
cmp [edi+FUTEX.handle], ecx |
jne .epicfail |
|
xor ecx, ecx |
|
pushfd |
cli |
|
lea ebx, [edi+FUTEX.wait_list] |
mov esi, [edi+FUTEX.wait_list.next] |
@@: |
cmp esi, ebx |
je @F |
|
mov eax, [esi+MUTEX_WAITER.task] |
mov [eax+TASKDATA.state], 0 |
|
mov esi, [esi+MUTEX_WAITER.list.next] |
inc ecx |
cmp ecx, edx |
jb @B |
@@: |
popfd |
mov [esp+SYSCALL_STACK._eax], ecx |
ret |
|
|