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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>
This commit is contained in:
Adhemerval Zanella 2017-11-01 11:56:53 -02:00
parent 6a4235f129
commit d83da3a4ce
2 changed files with 4 additions and 8 deletions
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ChangeLog
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@ -1,5 +1,7 @@
2017-11-06 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* signal/sighold.c (sighold): Optimize implementation.
* sysdeps/unix/sysv/linux/sigqueue.c (__sigqueue): Asssume
__NR_rt_sigqueueinfo.

10
signal/sighold.c
View File

@ -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);
}