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Minor VM refactor + GC bug fix

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The VM now respects metamethods from proto objects connected to tables. Also the CState is frozen while being instantiated.
This commit is contained in:
CPunch
2021-01-23 17:16:45 -06:00
parent 0ad0df5fba
commit fd1481fa43
3 changed files with 158 additions and 187 deletions
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18
src/cstate.c
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@@ -16,7 +16,7 @@ CState *cosmoV_newState() {
}
state->panic = false;
state->freezeGC = false;
state->freezeGC = 1; // we start frozen
// GC
state->objects = NULL;
@@ -38,7 +38,6 @@ CState *cosmoV_newState() {
for (int i = 0; i < COBJ_MAX; i++)
state->protoObjects[i] = NULL;
// first, set all strings to NULL so our GC doesn't read garbage data
for (int i = 0; i < ISTRING_MAX; i++)
state->iStrings[i] = NULL;
@@ -68,13 +67,16 @@ CState *cosmoV_newState() {
for (int i = 0; i < ISTRING_MAX; i++)
state->iStrings[i]->isIString = true;
state->freezeGC = 0; // unfreeze the state
return state;
}
void cosmoV_freeState(CState *state) {
#ifdef GC_DEBUG
printf("state %p is being freed!\n", state);
printf("state %p is being free'd!\n", state);
#endif
cosmoM_freezeGC(state);
// frees all the objects
CObj *objs = state->objects;
while (objs != NULL) {
@@ -92,7 +94,15 @@ void cosmoV_freeState(CState *state) {
cosmoT_clearTable(state, &state->globals);
// free our gray stack & finally free the state structure
free(state->grayStack.array);
cosmoM_freearray(state, CObj*, state->grayStack.array, state->grayStack.capacity);
// TODO: yeah idk, it looks like im missing 520 bytes somewhere? i'll look into it later
/*#ifdef GC_DEBUG
if (state->allocatedBytes != sizeof(CState)) {
printf("state->allocatedBytes doesn't match expected value (%lu), got %lu!", sizeof(CState), state->allocatedBytes);
exit(0);
}
#endif*/
free(state);
}