diff options
Diffstat (limited to 'kernel/proc.c')
-rw-r--r-- | kernel/proc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/proc.c b/kernel/proc.c index 2d0ffa1..221f0f8 100644 --- a/kernel/proc.c +++ b/kernel/proc.c @@ -422,7 +422,7 @@ wait(uint64 addr) } // No point waiting if we don't have any children. - if(!havekids || p->killed){ + if(!havekids || __sync_add_and_fetch(&p->killed, 0)){ release(&wait_lock); return -1; } @@ -588,7 +588,7 @@ kill(int pid) for(p = proc; p < &proc[NPROC]; p++){ acquire(&p->lock); if(p->pid == pid){ - p->killed = 1; + __sync_bool_compare_and_swap(&p->killed, 0, 1); if(p->state == SLEEPING){ // Wake process from sleep(). p->state = RUNNABLE; |