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userdata are removed from weaktables before invoking their GC fallbacks

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This commit is contained in:
Roberto Ierusalimschy 2002-06-25 16:17:42 -03:00
parent 35707e94f3
commit 9d6556fd87
1 changed files with 3 additions and 3 deletions
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6
lgc.c
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@ -1,5 +1,5 @@
/*
** $Id: lgc.c,v 1.137 2002/06/20 20:41:46 roberto Exp roberto $
** $Id: lgc.c,v 1.138 2002/06/24 17:19:43 roberto Exp roberto $
** Garbage Collector
** See Copyright Notice in lua.h
*/
@ -215,7 +215,7 @@ static void traversetable (GCState *st, Table *h) {
int weakvalue = 0;
marktable(st, h->metatable);
lua_assert(h->lsizenode || h->node == G(st->L)->dummynode);
mode = fasttm(st->L, h->metatable, TM_WEAKMODE);
mode = fasttm(st->L, h->metatable, TM_MODE);
if (mode && ttype(mode) == LUA_TSTRING) { /* weak table? */
h->mark = st->toclear; /* must be cleared after GC, ... */
st->toclear = h; /* ...put in the appropriate list */
@ -458,10 +458,10 @@ void luaC_collectgarbage (lua_State *L) {
st.toclear = NULL;
markstacks(&st); /* mark all stacks */
propagatemarks(&st); /* mark all reachable objects */
cleartables(st.toclear);
separateudata(L); /* separate userdata to be preserved */
marktmu(&st); /* mark `preserved' userdata */
propagatemarks(&st); /* remark */
cleartables(st.toclear);
luaC_collect(L, 0);
checkMbuffer(L);
G(L)->GCthreshold = 2*G(L)->nblocks; /* new threshold */