This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
[PATCH v2 8/8] Optimize sigrelse implementation
- From: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>
- To: libc-alpha at sourceware dot org
- Date: Mon, 6 Nov 2017 11:37:06 -0200
- Subject: [PATCH v2 8/8] Optimize sigrelse implementation
- Authentication-results: sourceware.org; auth=none
- References: <1509975426-1772-1-git-send-email-adhemerval.zanella@linaro.org>
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>
---
ChangeLog | 2 ++
signal/sigrelse.c | 12 +++---------
2 files changed, 5 insertions(+), 9 deletions(-)
diff --git a/signal/sigrelse.c b/signal/sigrelse.c
index e41c2bd..61f240b 100644
--- a/signal/sigrelse.c
+++ b/signal/sigrelse.c
@@ -26,14 +26,8 @@ sigrelse (int sig)
{
sigset_t set;
- /* Retrieve current signal set. */
- if (__sigprocmask (SIG_SETMASK, NULL, &set) < 0)
+ sigemptyset (&set);
+ if (sigaddset (&set, sig) < 0)
return -1;
-
- /* Remove the specified signal. */
- if (sigdelset (&set, sig) < 0)
- return -1;
-
- /* Set the new mask. */
- return __sigprocmask (SIG_SETMASK, &set, NULL);
+ return __sigprocmask (SIG_UNBLOCK, &set, NULL);
}
--
2.7.4