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more freedom in handling memory-allocation errors (not all allocations

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automatically raise an error), which allows fixing a bug when resizing
a table.
This commit is contained in:
Roberto Ierusalimschy
2017-12-08 15:28:25 -02:00
parent 40f823ec90
commit e663a24ab0
8 changed files with 139 additions and 98 deletions
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11
lgc.c
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@@ -1,5 +1,5 @@
/*
** $Id: lgc.c,v 2.240 2017/11/30 15:37:16 roberto Exp roberto $
** $Id: lgc.c,v 2.241 2017/12/01 17:38:49 roberto Exp roberto $
** Garbage Collector
** See Copyright Notice in lua.h
*/
@@ -816,18 +816,13 @@ static GCObject **sweeptolive (lua_State *L, GCObject **p) {
*/
/*
** If possible, shrink string table (protected from memory errors).
** If possible, shrink string table.
*/
static void shrinkstrtable (lua_State *L, void *ud) {
luaS_resize(L, *cast(int*, ud) / 2);
}
static void checkSizes (lua_State *L, global_State *g) {
if (!g->gcemergency) {
l_mem olddebt = g->GCdebt;
if (g->strt.nuse < g->strt.size / 4) /* string table too big? */
luaD_rawrunprotected(L, &shrinkstrtable, &g->strt.size);
luaS_resize(L, g->strt.size / 2);
g->GCestimate += g->GCdebt - olddebt; /* correct estimate */
}
}