From d83da3a4cebcf77e34593b86112dfad332808dae Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Wed, 1 Nov 2017 11:56:53 -0200 Subject: Optimize sighold implementation This patch simplifies sighold a bit by removing an extra sigprocmask and using SIG_BLOCK (which union of the current set and the set argument). Checked on x86_64-linux-gnu. * signal/sighold.c (sighold): Optimize implementation. Signed-off-by: Adhemerval Zanella Reviewed-by: Zack Weinberg --- signal/sighold.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'signal') diff --git a/signal/sighold.c b/signal/sighold.c index 2e32e47..955ac5b 100644 --- a/signal/sighold.c +++ b/signal/sighold.c @@ -26,14 +26,8 @@ sighold (int sig) { sigset_t set; - /* Retrieve current signal set. */ - if (__sigprocmask (SIG_SETMASK, NULL, &set) < 0) - return -1; - - /* Add the specified signal. */ + sigemptyset (&set); if (sigaddset (&set, sig) < 0) return -1; - - /* Set the new mask. */ - return __sigprocmask (SIG_SETMASK, &set, NULL); + return __sigprocmask (SIG_BLOCK, &set, NULL); } -- cgit v1.1