lua

commit fa2f294dd1269115bf9cf534dd38553e2f606801
parent 82fae58e25b7e2be6390238ce60d5678b24dce44
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date:   Fri,  9 Dec 2022 16:34:52 -0300

Reduce calls to 'luaC_step' when GC is stopped

Diffstat:
M
lgc.c
 | 
9
++++++---

1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/lgc.c b/lgc.c
@@ -1681,12 +1681,15 @@ static void incstep (lua_State *L, global_State *g) {
 }
 
 /*
-** performs a basic GC step if collector is running
+** Performs a basic GC step if collector is running. (If collector is
+** not running, set a reasonable debt to avoid it being called at
+** every single check.)
 */
 void luaC_step (lua_State *L) {
   global_State *g = G(L);
-  lua_assert(!g->gcemergency);
-  if (gcrunning(g)) {  /* running? */
+  if (!gcrunning(g))  /* not running? */
+    luaE_setdebt(g, -2000);
+  else {
     if(isdecGCmodegen(g))
       genstep(L, g);
     else