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bug: garbage collector can trigger too many times in recursive loops,

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because it was not computing the size of CallInfo structures in threads
This commit is contained in:
Roberto Ierusalimschy 2013-04-26 15:26:49 -03:00
parent f79584faca
commit c37b7b3cca
1 changed files with 10 additions and 3 deletions
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13
lgc.c
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@ -1,5 +1,5 @@
/*
** $Id: lgc.c,v 2.139 2013/03/15 18:33:36 roberto Exp roberto $
** $Id: lgc.c,v 2.140.1.2 2013/04/26 18:22:05 roberto Exp $
** Garbage Collector
** See Copyright Notice in lua.h
*/
@ -493,17 +493,24 @@ static lu_mem traverseLclosure (global_State *g, LClosure *cl) {
static lu_mem traversestack (global_State *g, lua_State *th) {
int n = 0;
StkId o = th->stack;
if (o == NULL)
return 1; /* stack not completely built yet */
for (; o < th->top; o++)
for (; o < th->top; o++) /* mark live elements in the stack */
markvalue(g, o);
if (g->gcstate == GCSatomic) { /* final traversal? */
StkId lim = th->stack + th->stacksize; /* real end of stack */
for (; o < lim; o++) /* clear not-marked stack slice */
setnilvalue(o);
}
return sizeof(lua_State) + sizeof(TValue) * th->stacksize;
else { /* count call infos to compute size */
CallInfo *ci;
for (ci = &th->base_ci; ci != th->ci; ci = ci->next)
n++;
}
return sizeof(lua_State) + sizeof(TValue) * th->stacksize +
sizeof(CallInfo) * n;
}