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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-11-06 09:31:37 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-11-15 15:45:39 -0200
commit1ba1d8a44d244110c1f8d768f098ac44351acb76 (patch)
treecb0d5bb38299dd3755f7496d111bdd00e450e8a4 /signal
parentad4f43a2344864ae2304060dcc722a7a63bad1b4 (diff)
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Optimize sigrelse 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>
Diffstat (limited to 'signal')
-rw-r--r--signal/sigrelse.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/signal/sigrelse.c b/signal/sigrelse.c
index e41c2bd261..61f240be5e 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);
}