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Turn some lua_State fields into 32 bit pointers.

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lua_State now fits into one cache line on x64.
This commit is contained in:
Mike Pall
2010-09-09 12:28:17 +02:00
parent fd63b05253
commit 96957a4551
13 changed files with 474 additions and 484 deletions
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12
src/lj_gc.c
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@@ -267,9 +267,9 @@ static void gc_traverse_proto(global_State *g, GCproto *pt)
/* Traverse the frame structure of a stack. */
static MSize gc_traverse_frames(global_State *g, lua_State *th)
{
TValue *frame, *top = th->top-1;
TValue *frame, *top = th->top-1, *bot = tvref(th->stack);
/* Note: extra vararg frame not skipped, marks function twice (harmless). */
for (frame = th->base-1; frame > th->stack; frame = frame_prev(frame)) {
for (frame = th->base-1; frame > bot; frame = frame_prev(frame)) {
GCfunc *fn = frame_func(frame);
TValue *ftop = frame;
if (isluafunc(fn)) ftop += funcproto(fn)->framesize;
@@ -277,18 +277,18 @@ static MSize gc_traverse_frames(global_State *g, lua_State *th)
gc_markobj(g, frame_gc(frame)); /* Need to mark hidden function (or L). */
}
top++; /* Correct bias of -1 (frame == base-1). */
if (top > th->maxstack) top = th->maxstack;
return (MSize)(top - th->stack); /* Return minimum needed stack size. */
if (top > tvref(th->maxstack)) top = tvref(th->maxstack);
return (MSize)(top - bot); /* Return minimum needed stack size. */
}
/* Traverse a thread object. */
static void gc_traverse_thread(global_State *g, lua_State *th)
{
TValue *o, *top = th->top;
for (o = th->stack+1; o < top; o++)
for (o = tvref(th->stack)+1; o < top; o++)
gc_marktv(g, o);
if (g->gc.state == GCSatomic) {
top = th->stack + th->stacksize;
top = tvref(th->stack) + th->stacksize;
for (; o < top; o++) /* Clear unmarked slots. */
setnilV(o);
}