commit 6298903e35217ab69c279056f925fb72900ce0b7
parent b57574d6fb9071b2f8f261b32c9378ed72db7023
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 6 Jul 2020 12:11:27 -0300
Keep minimum size when shrinking a stack
When shrinking a stack (during GC), do not make it smaller than the
initial stack size.
Diffstat:
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/ldo.c b/ldo.c
@@ -245,13 +245,12 @@ static int stackinuse (lua_State *L) {
void luaD_shrinkstack (lua_State *L) {
int inuse = stackinuse(L);
- int goodsize = inuse + (inuse / 8) + 2*EXTRA_STACK;
+ int goodsize = inuse + BASIC_STACK_SIZE;
if (goodsize > LUAI_MAXSTACK)
goodsize = LUAI_MAXSTACK; /* respect stack limit */
/* if thread is currently not handling a stack overflow and its
good size is smaller than current size, shrink its stack */
- if (inuse <= (LUAI_MAXSTACK - EXTRA_STACK) &&
- goodsize < L->stacksize)
+ if (inuse <= (LUAI_MAXSTACK - EXTRA_STACK) && goodsize < L->stacksize)
luaD_reallocstack(L, goodsize, 0); /* ok if that fails */
else /* don't change stack */
condmovestack(L,{},{}); /* (change only for debugging) */