diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/pthread_kill.c')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/pthread_kill.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/pthread_kill.c b/nptl/sysdeps/unix/sysv/linux/pthread_kill.c index 6967acd92b..87577be4dc 100644 --- a/nptl/sysdeps/unix/sysv/linux/pthread_kill.c +++ b/nptl/sysdeps/unix/sysv/linux/pthread_kill.c @@ -44,6 +44,11 @@ __pthread_kill (threadid, signo) /* We have a special syscall to do the work. */ 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_kill is not guaranteed to be async-safe. */ int val; #if __ASSUME_TGKILL val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid), |