# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1512309805 -3600
# Node ID 200f4f1b7833aea8593d0b88aef616dc06541064
# Parent  a72898dde1a0e79e16cbffc1954f137c0c16705f
util.crand: Use a small buffer on the stack for small pieces of random, should be faster

diff -r a72898dde1a0 -r 200f4f1b7833 util-src/crand.c
--- a/util-src/crand.c	Sun Dec 03 14:14:35 2017 +0100
+++ b/util-src/crand.c	Sun Dec 03 15:03:25 2017 +0100
@@ -58,9 +58,19 @@
 #error util.crand compiled without a random source
 #endif
 
+#ifndef SMALLBUFSIZ
+#define SMALLBUFSIZ 32
+#endif
+
 int Lrandom(lua_State *L) {
+	char smallbuf[SMALLBUFSIZ];
+	char *buf = &smallbuf[0];
 	const size_t len = luaL_checkinteger(L, 1);
-	void *buf = lua_newuserdata(L, len);
+
+	if(len > SMALLBUFSIZ) {
+		buf = lua_newuserdata(L, len);
+	}
+
 
 #if defined(WITH_GETRANDOM)
 	/*