kernel/cache/file_map.cpp

45 //	for the whole map.
46 // TODO: it would be nice if we could free a file map in low memory situations.
122 	mutex_init(&fLock, "file map");
310 /*!	Invalidates or removes the specified part of the file map.
438 	// We now have cached the map of this file as far as we need it, now
502 	FileMap* map = (FileMap*)parse_expression(argv[argc - 1]);
503 	if (map == NULL) {
504 		kprintf("invalid file map!\n");
508 	kprintf("FileMap %p\n", map);
509 	kprintf("  size    %" B_PRIdOFF "\n", map->Size());
510 	kprintf("  count   %lu\n", map->Count());
515 	for (uint32 i = 0; i < map->Count(); i++) {
516 		file_extent* extent = map->ExtentAt(i);
548 		FileMap* map = iterator.Next();
550 		if (minSize > map->Size() || (maxSize != -1 && maxSize < map->Size()))
553 		if (map->Count() != 0) {
554 			file_extent* extent = map->ExtentAt(map->Count() - 1);
558 			extents += map->Count();
562 		size += map->Size();
569 	kprintf("average %" B_PRIu32 " extents per map for %" B_PRIdOFF " bytes.\n",
586 		"Dumps the specified file map.",
587 		"[-p] <file-map>\n"
589 		"  <file-map>  - pointer to the file map.\n", 0);
591 		"Dumps some file map statistics.");
593 	mutex_init(&sLock, "file map list");
621 	FileMap* map = (FileMap*)_map;
622 	if (map == NULL)
625 	TRACE("file_map_delete(map = %p)\n", map);
626 	delete map;
633 	FileMap* map = (FileMap*)_map;
634 	if (map == NULL)
637 	map->SetSize(size);
644 	FileMap* map = (FileMap*)_map;
645 	if (map == NULL)
648 	map->Invalidate(offset, size);
655 	FileMap* map = (FileMap*)_map;
656 	if (map == NULL)
659 	return map->SetMode(mode);
667 	TRACE("file_map_translate(map %p, offset %lld, size %ld)\n",
670 	FileMap* map = (FileMap*)_map;
671 	if (map == NULL)
674 	return map->Translate(offset, size, vecs, _count, align);