Function extents_remove_locked

deps/jemalloc/src/extent.c:370–399

}

static void
extents_remove_locked(tsdn_t *tsdn, extents_t *extents, extent_t *extent) {
	malloc_mutex_assert_owner(tsdn, &extents->mtx);
	assert(extent_state_get(extent) == extents->state);

	size_t size = extent_size_get(extent);
	size_t psz = extent_size_quantize_floor(size);
	pszind_t pind = sz_psz2ind(psz);
	extent_heap_remove(&extents->heaps[pind], extent);

	if (config_stats) {
		extents_stats_sub(extents, pind, size);
	}

	if (extent_heap_empty(&extents->heaps[pind])) {
		bitmap_set(extents->bitmap, &extents_bitmap_info,
		    (size_t)pind);
	}
	extent_list_remove(&extents->lru, extent);
	size_t npages = size >> LG_PAGE;
	/*
	 * As in extents_insert_locked, we hold extents->mtx and so don't need
	 * atomic operations for updating extents->npages.
	 */
	size_t cur_extents_npages =
	    atomic_load_zu(&extents->npages, ATOMIC_RELAXED);
	assert(cur_extents_npages >= npages);
	atomic_store_zu(&extents->npages,
	    cur_extents_npages - (size >> LG_PAGE), ATOMIC_RELAXED);
}

/*
 * Find an extent with size [min_size, max_size) to satisfy the alignment