kernel/vm/VMAnonymousCache.cpp

74 // number of free swap blocks the object cache shall minimally have
101 	VMAnonymousCache	*cache;
102 	off_t				page_index;  // page index in the cache
106 // SWAP_BLOCK_PAGES continuous pages from the same cache
123 		VMAnonymousCache* cache = key.cache;
124 		return blockIndex ^ (size_t)(int*)cache;
136 			&& key.cache == value->key.cache;
167 	SwapTraceEntry(VMAnonymousCache* cache)
169 		fCache(cache)
180 	ReadPage(VMAnonymousCache* cache, page_num_t pageIndex,
183 		SwapTraceEntry(cache),
192 		out.Print("swap read:  cache %p, page index: %lu <- swap slot: %lu",
204 	WritePage(VMAnonymousCache* cache, page_num_t pageIndex,
207 		SwapTraceEntry(cache),
216 		out.Print("swap write: cache %p, page index: %lu -> swap slot: %lu",
402 	WriteCallback(VMAnonymousCache* cache, AsyncIOCallback* callback)
405 		fCache(cache)
552 				// not an option as 1. unlocking the cache means that new
554 				// cleared (since the cache still has the old size) and 2.
555 				// we'd risk a deadlock in case we come from the file cache
617 /*!	Moves the swap pages for the given range from the source cache into this
618 	cache. Both caches must be locked.
626 		panic("VMAnonymousCache::Adopt(): adopt from incompatible cache %p "
667 					swapBlock->key.cache = this;
1017 		panic("VMAnonymousCache::Merge(): merge with incompatible cache "
1032 	// Move all not shadowed swap pages from the source to the consumer cache.
1036 	// Move all not shadowed pages from the source to the consumer cache.
1077 			swap->key.cache = this;
1210 	// The source cache has less pages than the consumer (this cache), so we
1221 			// the page is not yet in the consumer cache - move it upwards
1232 	// The consumer (this cache) has less pages than the source, so we move the
1284 		key.cache = this;
1326 			// to the consumer. At any rate, the source cache doesn't own it
1342 			// no swap block in the consumer cache. Just take over the source
1344 			sourceSwapBlock->key.cache = this;
1350 			// already a swap block in the consumer cache. Copy the respective
1546 	// create swap block cache
1550 		panic("swap_init(): can't create object cache for swap blocks\n");
1768 	VMAnonymousCache* cache = dynamic_cast<VMAnonymousCache*>(page->Cache());
1769 	if (cache == NULL)
1772 	swap_addr_t slotIndex = cache->_SwapBlockGetAddress(page->cache_offset);
1777 	cache->fAllocatedSwapSize -= B_PAGE_SIZE;
1778 	cache->_SwapBlockFree(page->cache_offset, 1);