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Minimize zero initialization of the stack

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This commit is contained in:
dearblue
2024-04-13 22:22:39 +09:00
parent d761561be3
commit a4b57aa47b
2 changed files with 9 additions and 5 deletions
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mrbgems/mruby-fiber/src/fiber.c
+5 -3
View File
@@ -43,8 +43,8 @@ fiber_init_fiber(mrb_state *mrb, struct RFiber *f, const struct RProc *p)
c->stend = c->stbase + slen;
{
mrb_value *s = c->stbase;
mrb_value *send = c->stend;
mrb_value *s = c->stbase + 1;
mrb_value *send = c->stbase + p->body.irep->nregs;
while (s < send) {
SET_NIL_VALUE(*s);
@@ -56,9 +56,11 @@ fiber_init_fiber(mrb_state *mrb, struct RFiber *f, const struct RProc *p)
c->stbase[0] = mrb->c->ci->stack[0];
/* initialize callinfo stack */
c->cibase = (mrb_callinfo*)mrb_calloc(mrb, FIBER_CI_INIT_SIZE, sizeof(mrb_callinfo));
static const mrb_callinfo ci_zero = { 0 };
c->cibase = (mrb_callinfo*)mrb_malloc(mrb, FIBER_CI_INIT_SIZE * sizeof(mrb_callinfo));
c->ciend = c->cibase + FIBER_CI_INIT_SIZE;
c->ci = c->cibase;
c->cibase[0] = ci_zero;
/* adjust return callinfo */
ci = c->ci;
src/vm.c
+4 -2
View File
@@ -116,12 +116,14 @@ stack_init(mrb_state *mrb)
struct mrb_context *c = mrb->c;
/* mrb_assert(mrb->stack == NULL); */
c->stbase = (mrb_value*)mrb_calloc(mrb, STACK_INIT_SIZE, sizeof(mrb_value));
c->stbase = (mrb_value*)mrb_malloc(mrb, STACK_INIT_SIZE * sizeof(mrb_value));
c->stend = c->stbase + STACK_INIT_SIZE;
/* mrb_assert(ci == NULL); */
c->cibase = (mrb_callinfo*)mrb_calloc(mrb, CALLINFO_INIT_SIZE, sizeof(mrb_callinfo));
static const mrb_callinfo ci_zero = { 0 };
c->cibase = (mrb_callinfo*)mrb_malloc(mrb, CALLINFO_INIT_SIZE * sizeof(mrb_callinfo));
c->ciend = c->cibase + CALLINFO_INIT_SIZE;
c->cibase[0] = ci_zero;
c->ci = c->cibase;
c->ci->u.target_class = mrb->object_class;
c->ci->stack = c->stbase;