optimize raise not to make a syscall for getting tid

[musl] / src / linux / sbrk.c

diff --git a/src/linux/sbrk.c b/src/linux/sbrk.c
index 3643765..1e82d64 100644 (file)
--- a/src/linux/sbrk.c
+++ b/src/linux/sbrk.c
@@ -1,9 +1,9 @@
 #include <stdint.h>
+#include <errno.h>
 #include "syscall.h"
 
 void *sbrk(intptr_t inc)
 {
-       unsigned long cur = syscall(SYS_brk, 0);
-       if (inc && syscall(SYS_brk, cur+inc) != cur+inc) return (void *)-1;
-       return (void *)cur;
+       if (inc) return (void *)__syscall_ret(-ENOMEM);
+       return (void *)__syscall(SYS_brk, 0);
 }