From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 1 Sep 2018 05:46:44 +0000 (-0400)
Subject: optimize raise not to make a syscall for getting tid
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;ds=sidebyside;h=0b4c92b7acf63529858e7f8a3bb6505cd2b6e962;p=musl

optimize raise not to make a syscall for getting tid

assuming signals are blocked, which they are here, the tid in the
thread structure is always valid and cannot change out from under us.
---

diff --git a/src/signal/raise.c b/src/signal/raise.c
index 717b1c91..f0512019 100644
--- a/src/signal/raise.c
+++ b/src/signal/raise.c
@@ -5,11 +5,9 @@
 
 int raise(int sig)
 {
-	int tid, ret;
 	sigset_t set;
 	__block_app_sigs(&set);
-	tid = __syscall(SYS_gettid);
-	ret = syscall(SYS_tkill, tid, sig);
+	int ret = syscall(SYS_tkill, __pthread_self()->tid, sig);
 	__restore_sigs(&set);
 	return ret;
 }