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Diffstat (limited to 'src/thread/pthread_kill.c')
-rw-r--r-- | src/thread/pthread_kill.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/thread/pthread_kill.c b/src/thread/pthread_kill.c index 3d9395cb..79ddb209 100644 --- a/src/thread/pthread_kill.c +++ b/src/thread/pthread_kill.c @@ -4,9 +4,15 @@ int pthread_kill(pthread_t t, int sig) { int r; + sigset_t set; + /* Block not just app signals, but internal ones too, since + * pthread_kill is used to implement pthread_cancel, which + * must be async-cancel-safe. */ + __block_all_sigs(&set); LOCK(t->killlock); r = t->tid ? -__syscall(SYS_tkill, t->tid, sig) : (sig+0U >= _NSIG ? EINVAL : 0); UNLOCK(t->killlock); + __restore_sigs(&set); return r; } |