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| author | Frans Kaashoek <kaashoek@mit.edu> | 2022-08-10 20:35:42 -0400 |
|---|---|---|
| committer | Frans Kaashoek <kaashoek@mit.edu> | 2022-08-10 20:35:42 -0400 |
| commit | 4087a6e7fc773ba4eb217dfc196dfe1eee84b25d (patch) | |
| tree | a77a5b04944ed3f83ea10875aa32b1322e4224c6 /kernel/sysproc.c | |
| parent | b1fd09335ae1c112a01cedad0a6abd584fe8dca7 (diff) | |
| download | xv6-labs-2022-4087a6e7fc773ba4eb217dfc196dfe1eee84b25d.tar.xz xv6-labs-2022-4087a6e7fc773ba4eb217dfc196dfe1eee84b25d.zip | |
Read and write p->killed using atomics
Diffstat (limited to 'kernel/sysproc.c')
| -rw-r--r-- | kernel/sysproc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sysproc.c b/kernel/sysproc.c index e8bcda9..61b715b 100644 --- a/kernel/sysproc.c +++ b/kernel/sysproc.c @@ -63,7 +63,7 @@ sys_sleep(void) acquire(&tickslock); ticks0 = ticks; while(ticks - ticks0 < n){ - if(myproc()->killed){ + if(__sync_add_and_fetch(&(myproc()->killed), 0)){ release(&tickslock); return -1; } |