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Free empty heap pages

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Justin Ethier 2016-07-06 22:21:31 -04:00
parent d362f15ede
commit 8a3ed8e1a0
1 changed files with 15 additions and 10 deletions
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25
gc.c
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@ -224,7 +224,7 @@ gc_heap *gc_heap_free(gc_heap *page, gc_heap *prev_page)
{ {
// At least for now, do not free first page // At least for now, do not free first page
if (prev_page == NULL || page == NULL) { if (prev_page == NULL || page == NULL) {
return NULL; return page;
} }
//#if GC_DEBUG_PRINTFS //#if GC_DEBUG_PRINTFS
fprintf(stderr, "DEBUG freeing heap page at addr: %p\n", page); fprintf(stderr, "DEBUG freeing heap page at addr: %p\n", page);
@ -237,9 +237,14 @@ gc_heap *gc_heap_free(gc_heap *page, gc_heap *prev_page)
int gc_is_heap_empty(gc_heap *h) int gc_is_heap_empty(gc_heap *h)
{ {
// TODO: this function does not work yet!! gc_free_list *f;
if (h == NULL || h->free_list == NULL) return 1; if (!h || !h->free_list) return 0;
return 0;
f = h->free_list;
if (f->size != 0 || !f->next) return 0;
f = f->next;
return (f->size + gc_heap_align(gc_free_chunk_size)) == h->size;
} }
/** /**
@ -776,12 +781,12 @@ size_t gc_sweep(gc_heap * h, int heap_type, size_t * sum_freed_ptr)
// TODO: with huge heaps, this becomes more important. one of the huge // TODO: with huge heaps, this becomes more important. one of the huge
// pages only has one object, so it is likely that the page // pages only has one object, so it is likely that the page
// will become free at some point and could be reclaimed. // will become free at some point and could be reclaimed.
// if (gc_is_heap_empty(h)){ if (gc_is_heap_empty(h)){
// unsigned int h_size = h->size; unsigned int h_size = h->size;
// gc_heap_free(h, prev_h); h = gc_heap_free(h, prev_h);
// cached_heap_free_sizes[heap_type] -= h_size; cached_heap_free_sizes[heap_type] -= h_size;
// cached_heap_total_sizes[heap_type] -= h_size; cached_heap_total_sizes[heap_type] -= h_size;
// } }
sum_freed += heap_freed; sum_freed += heap_freed;
heap_freed = 0; heap_freed = 0;
} }