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Initial version of gc_heap_free()

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Justin Ethier 2016-06-27 20:45:23 -04:00
parent aa93c2c487
commit a2dccabdb7
2 changed files with 24 additions and 1 deletions
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24
gc.c
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@ -212,6 +212,28 @@ gc_heap *gc_heap_create(int heap_type, size_t size, size_t max_size,
return h; return h;
} }
/**
* @brief Free a page of the heap
* @usage
* @param page Page to free
* @param prev_page Previous page in the heap
* @return Previous page if successful, NULL otherwise
*/
gc_heap *gc_heap_free(gc_heap *page, gc_heap *prev_page)
{
// At least for now, do not free first page
if (prev_page == NULL || page == NULL) {
return NULL;
}
#if GC_DEBUG_PRINTFS
fprintf(stderr, "DEBUG freeing heap page at addr: %p\n", page);
#endif
prev_page->next = page->next;
free(page);
return prev_page;
}
/** /**
* Print heap usage information. * Print heap usage information.
* Before calling this function the current thread must have the heap lock * Before calling this function the current thread must have the heap lock
@ -615,7 +637,7 @@ size_t gc_sweep(gc_heap * h, int heap_type, size_t * sum_freed_ptr)
size_t freed, max_freed = 0, heap_freed = 0, sum_freed = 0, size; size_t freed, max_freed = 0, heap_freed = 0, sum_freed = 0, size;
object p, end; object p, end;
gc_free_list *q, *r, *s; gc_free_list *q, *r, *s;
gc_heap *orig_heap_ptr = h; gc_heap *orig_heap_ptr = h, *prev_h = h;
// //
// Lock the heap to prevent issues with allocations during sweep // Lock the heap to prevent issues with allocations during sweep

1
include/cyclone/types.h
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@ -571,6 +571,7 @@ void gc_add_mutator(gc_thread_data * thd);
void gc_remove_mutator(gc_thread_data * thd); void gc_remove_mutator(gc_thread_data * thd);
gc_heap *gc_heap_create(int heap_type, size_t size, size_t max_size, gc_heap *gc_heap_create(int heap_type, size_t size, size_t max_size,
size_t chunk_size); size_t chunk_size);
gc_heap *gc_heap_free(gc_heap *page, gc_heap *prev_page);
void gc_print_stats(gc_heap * h); void gc_print_stats(gc_heap * h);
int gc_grow_heap(gc_heap * h, int heap_type, size_t size, size_t chunk_size); int gc_grow_heap(gc_heap * h, int heap_type, size_t size, size_t chunk_size);
char *gc_copy_obj(object hp, char *obj, gc_thread_data * thd); char *gc_copy_obj(object hp, char *obj, gc_thread_data * thd);