diff options
Diffstat (limited to 'nptl/pthread_cancel.c')
| -rw-r--r-- | nptl/pthread_cancel.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/nptl/pthread_cancel.c b/nptl/pthread_cancel.c index 1523da82aa..8d1b8640f8 100644 --- a/nptl/pthread_cancel.c +++ b/nptl/pthread_cancel.c @@ -65,6 +65,12 @@ pthread_cancel (th) thread as canceled. */ INTERNAL_SYSCALL_DECL (err); + /* One comment: The PID field in the TCB can temporarily be + changed (in fork). But this must not affect this code + here. Since this function would have to be called while + the thread is executing fork, it would have to happen in + a signal handler. But this is no allowed, pthread_cancel + is not guaranteed to be async-safe. */ int val; #if __ASSUME_TGKILL val = INTERNAL_SYSCALL (tgkill, err, 3, |