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 717b1c917a34311ab514c7955e995c2fbad140b9..f0512019a1921eea797ac84252fd4fd01e3d6d7a 100644 (file)
--- 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;
 }