jemalloc/src/arena.c

213 	if (pageind-1 < map_bias)
526 		assert(arena_mapbits_allocated_get(chunk, map_bias) == 0);
528 		assert(arena_mapbits_unallocated_size_get(chunk, map_bias) ==
532 		assert(arena_mapbits_dirty_get(chunk, map_bias) ==
565 		arena_mapbits_unallocated_set(chunk, map_bias, arena_maxclass,
572 			for (i = map_bias+1; i < chunk_npages-1; i++)
576 			    (void *)arena_mapp_get(chunk, map_bias+1),
579 			    - (uintptr_t)arena_mapp_get(chunk, map_bias+1)));
580 			for (i = map_bias+1; i < chunk_npages-1; i++) {
590 	arena_avail_insert(arena, chunk, map_bias, chunk_npages-map_bias,
599 	assert(arena_mapbits_allocated_get(chunk, map_bias) == 0);
601 	assert(arena_mapbits_unallocated_size_get(chunk, map_bias) ==
605 	assert(arena_mapbits_dirty_get(chunk, map_bias) ==
612 	arena_avail_remove(arena, chunk, map_bias, chunk_npages-map_bias,
641 		    + map_bias;
674 		run = (arena_run_t *)((uintptr_t)chunk + (map_bias << LG_PAGE));
737 		assert(arena_mapbits_dirty_get(chunk, map_bias) != 0);
758 	for (pageind = map_bias; pageind < chunk_npages; pageind += npages) {
813 		    sizeof(arena_chunk_map_t)) + map_bias;
848 		    sizeof(arena_chunk_map_t)) + map_bias;
976 	assert(run_ind >= map_bias);
1053 	if (run_ind > map_bias && arena_mapbits_allocated_get(chunk, run_ind-1)
1088 		assert(run_ind == map_bias);
1180 		    sizeof(arena_chunk_map_t))) + map_bias;
2316 	 * 1) Compute safe header_size and map_bias values that include enough
2318 	 * 2) Refine map_bias based on (1) to omit the header pages in the page
2319 	 *    map.  The resulting map_bias may be one too small.
2320 	 * 3) Refine map_bias based on (2).  The result will be >= the result
2323 	map_bias = 0;
2326 		    (sizeof(arena_chunk_map_t) * (chunk_npages-map_bias));
2327 		map_bias = (header_size >> LG_PAGE) + ((header_size & PAGE_MASK)
2330 	assert(map_bias > 0);
2332 	arena_maxclass = chunksize - (map_bias << LG_PAGE);