/*
** performs a full GC cycle; if "isemergency", does not call
** finalizers (which could change stack positions)
*/
void luaC_fullgc (lua_State *L, int isemergency) {
global_State *g = G(L);
int origkind = g->gckind;
lua_assert(origkind != KGC_EMERGENCY);
if (isemergency) /* do not run finalizers during emergency GC */
g->gckind = KGC_EMERGENCY;
else {
g->gckind = KGC_NORMAL;
callallpendingfinalizers(L, 1);
}
if (keepinvariant(g)) { /* may there be some black objects? */
/* must sweep all objects to turn them back to white
(as white has not changed, nothing will be collected) */
entersweep(L);
}
/* finish any pending sweep phase to start a new cycle */
luaC_runtilstate(L, bitmask(GCSpause));
luaC_runtilstate(L, ~bitmask(GCSpause)); /* start new collection */
luaC_runtilstate(L, bitmask(GCSpause)); /* run entire collection */
if (origkind == KGC_GEN) { /* generational mode? */
/* generational mode must be kept in propagate phase */
luaC_runtilstate(L, bitmask(GCSpropagate));
}
g->gckind = origkind;
setpause(g, gettotalbytes(g));
if (!isemergency) /* do not run finalizers during emergency GC */
callallpendingfinalizers(L, 1);
}
/*
** performs a full GC cycle; if "isemergency", does not call
** finalizers (which could change stack positions)
*/
void luaC_fullgc (lua_State *L, int isemergency) {
global_State *g = G(L);
int origkind = g->gckind;
lua_assert(origkind != KGC_EMERGENCY);
if (!isemergency) /* do not run finalizers during emergency GC */
callallpendingfinalizers(L, 1);
if (keepinvariant(g)) { /* marking phase? */
/* must sweep all objects to turn them back to white
(as white has not changed, nothing will be collected) */
g->sweepstrgc = 0;
g->gcstate = GCSsweepstring;
}
g->gckind = isemergency ? KGC_EMERGENCY : KGC_NORMAL;
/* finish any pending sweep phase to start a new cycle */
luaC_runtilstate(L, bitmask(GCSpause));
/* run entire collector */
luaC_runtilstate(L, ~bitmask(GCSpause));
luaC_runtilstate(L, bitmask(GCSpause));
if (origkind == KGC_GEN) { /* generational mode? */
/* generational mode must always start in propagate phase */
luaC_runtilstate(L, bitmask(GCSpropagate));
}
g->gckind = origkind;
luaE_setdebt(g, stddebt(g));
if (!isemergency) /* do not run finalizers during emergency GC */
callallpendingfinalizers(L, 1);
}
void luaC_freeallobjects (lua_State *L) {
global_State *g = G(L);
separatetobefnz(g, 1); /* separate all objects with finalizers */
lua_assert(g->finobj == NULL);
callallpendingfinalizers(L, 0);
lua_assert(g->tobefnz == NULL);
g->currentwhite = WHITEBITS; /* this "white" makes all objects look dead */
g->gckind = KGC_NORMAL;
sweepwholelist(L, &g->finobj);
sweepwholelist(L, &g->allgc);
sweepwholelist(L, &g->fixedgc); /* collect fixed objects */
lua_assert(g->strt.nuse == 0);
}
void luaC_freeallobjects (lua_State *L) {
global_State *g = G(L);
int i;
separatetobefnz(L, 1); /* separate all objects with finalizers */
lua_assert(g->finobj == NULL);
callallpendingfinalizers(L, 0);
g->currentwhite = WHITEBITS; /* this "white" makes all objects look dead */
g->gckind = KGC_NORMAL;
sweepwholelist(L, &g->finobj); /* finalizers can create objs. in 'finobj' */
sweepwholelist(L, &g->allgc);
for (i = 0; i < g->strt.size; i++) /* free all string lists */
sweepwholelist(L, &g->strt.hash[i]);
lua_assert(g->strt.nuse == 0);
}
