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pcc: abstract space that has blocks paged out and in

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This commit is contained in:
Andy Wingo 2024-12-11 15:11:56 +01:00
parent c7645975bf
commit 0318770266
1 changed files with 10 additions and 6 deletions
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16
src/pcc.c
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@ -80,6 +80,10 @@ static inline struct copy_space* heap_allocation_space(struct gc_heap *heap) {
// The space into which small objects are allocated.
return heap_copy_space(heap);
}
static inline struct copy_space* heap_resizable_space(struct gc_heap *heap) {
// The space that gets resized.
return heap_copy_space(heap);
}
static inline struct large_object_space* heap_large_object_space(struct gc_heap *heap) {
return &heap->large_object_space;
}
@ -284,7 +288,7 @@ static void heap_reset_large_object_pages(struct gc_heap *heap, size_t npages) {
GC_ASSERT(npages <= previous);
size_t bytes = (previous - npages) <<
heap_large_object_space(heap)->page_size_log2;
copy_space_reacquire_memory(heap_copy_space(heap), bytes);
copy_space_reacquire_memory(heap_resizable_space(heap), bytes);
}
static void wait_for_mutators_to_stop(struct gc_heap *heap) {
@ -330,9 +334,9 @@ static void resize_heap(struct gc_heap *heap, size_t new_size) {
DEBUG("------ old heap size: %zu bytes\n", heap->size);
DEBUG("------ new heap size: %zu bytes\n", new_size);
if (new_size < heap->size)
copy_space_shrink(heap_copy_space(heap), heap->size - new_size);
copy_space_shrink(heap_resizable_space(heap), heap->size - new_size);
else
copy_space_expand(heap_copy_space(heap), new_size - heap->size);
copy_space_expand(heap_resizable_space(heap), new_size - heap->size);
heap->size = new_size;
HEAP_EVENT(heap, heap_resized, new_size);
@ -485,9 +489,9 @@ static void* allocate_large(struct gc_mutator *mut, size_t size) {
size_t npages = large_object_space_npages(space, size);
copy_space_request_release_memory(heap_copy_space(heap),
npages << space->page_size_log2);
while (!copy_space_page_out_blocks_until_memory_released(heap_copy_space(heap)))
copy_space_request_release_memory(heap_resizable_space(heap),
npages << space->page_size_log2);
while (!copy_space_page_out_blocks_until_memory_released(heap_resizable_space(heap)))
trigger_collection(mut, GC_COLLECTION_COMPACTING);
atomic_fetch_add(&heap->large_object_pages, npages);