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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-11-01 11:56:53 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-11-06 17:37:57 -0200
commitd83da3a4cebcf77e34593b86112dfad332808dae (patch)
tree625e7c99cd0b38a0c685bc3d7b23631dcbe8db85 /signal
parent6a4235f129b75ad9963ae93d9f386b8b366cb65a (diff)
downloadtermbaud-d83da3a4cebcf77e34593b86112dfad332808dae.tar.gz
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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 <adhemerval.zanella@linaro.org> Reviewed-by: Zack Weinberg <zackw@panix.com>
Diffstat (limited to 'signal')
-rw-r--r--signal/sighold.c10
1 files changed, 2 insertions, 8 deletions
diff --git a/signal/sighold.c b/signal/sighold.c
index 2e32e4718a5..955ac5b0fbc 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);
}