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new list 'twups' to allow traversal of upvalues from dead threads

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(+ fixed some problems with cycles involving those upvalues)
This commit is contained in:
Roberto Ierusalimschy
2014-02-18 10:39:37 -03:00
parent ffa96d988d
commit d764cc5522
5 changed files with 58 additions and 17 deletions
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4
lstate.c
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@@ -1,5 +1,5 @@
/*
** $Id: lstate.c,v 2.118 2014/02/13 12:11:34 roberto Exp roberto $
** $Id: lstate.c,v 2.119 2014/02/13 14:46:38 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
@@ -222,6 +222,7 @@ static void preinit_thread (lua_State *L, global_State *g) {
L->stack = NULL;
L->ci = NULL;
L->stacksize = 0;
L->twups = L; /* thread has no upvalues */
L->errorJmp = NULL;
L->nCcalls = 0;
L->hook = NULL;
@@ -317,6 +318,7 @@ LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
g->sweepgc = NULL;
g->gray = g->grayagain = NULL;
g->weak = g->ephemeron = g->allweak = NULL;
g->twups = NULL;
g->totalbytes = sizeof(LG);
g->GCdebt = 0;
g->gcfinnum = 0;