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Issue #73

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This commit is contained in:
Justin Ethier 2016-06-25 00:21:20 -04:00
parent b0d40fe51a
commit aa93c2c487
1 changed files with 17 additions and 1 deletions
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18
gc.c
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@ -212,6 +212,10 @@ gc_heap *gc_heap_create(int heap_type, size_t size, size_t max_size,
return h; return h;
} }
/**
* Print heap usage information.
* Before calling this function the current thread must have the heap lock
*/
void gc_print_stats(gc_heap * h) void gc_print_stats(gc_heap * h)
{ {
gc_free_list *f; gc_free_list *f;
@ -229,7 +233,13 @@ void gc_print_stats(gc_heap * h)
if (f->size > free_max) if (f->size > free_max)
free_max = f->size; free_max = f->size;
} }
fprintf(stdout, if (free == 0){
// Page is completely unused
free = h->size;
free_chunks = 1;
free_min = free_max = h->size;
}
fprintf(stderr,
"Heap page size=%u, used=%u, free=%u, free chunks=%u, min=%u, max=%u\n", "Heap page size=%u, used=%u, free=%u, free chunks=%u, min=%u, max=%u\n",
h->size, h->size - free, free, free_chunks, free_min, free_max); h->size, h->size - free, free, free_chunks, free_min, free_max);
} }
@ -605,6 +615,7 @@ 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;
// //
// Lock the heap to prevent issues with allocations during sweep // Lock the heap to prevent issues with allocations during sweep
@ -717,6 +728,11 @@ size_t gc_sweep(gc_heap * h, int heap_type, size_t * sum_freed_ptr)
sum_freed += heap_freed; sum_freed += heap_freed;
heap_freed = 0; heap_freed = 0;
} }
// DEBUGGING:
//fprintf(stderr, "Heap %d diagnostics:\n", heap_type);
//gc_print_stats(orig_heap_ptr);
pthread_mutex_unlock(&heap_lock); pthread_mutex_unlock(&heap_lock);
if (sum_freed_ptr) if (sum_freed_ptr)
*sum_freed_ptr = sum_freed; *sum_freed_ptr = sum_freed;