package khepri import "sync" var ( chunkPool = sync.Pool{New: newChunkBuf} nodePool = sync.Pool{New: newNode} ) type alloc_stats struct { m sync.Mutex alloc_map map[string]int free_map map[string]int alloc int free int new int all int max int } var ( chunk_stats alloc_stats node_stats alloc_stats ) func init() { chunk_stats.alloc_map = make(map[string]int) chunk_stats.free_map = make(map[string]int) } func newChunkBuf() interface{} { chunk_stats.m.Lock() chunk_stats.new += 1 chunk_stats.m.Unlock() // create buffer for iv, data and hmac return make([]byte, MaxCiphertextSize) } func newNode() interface{} { node_stats.m.Lock() node_stats.new += 1 node_stats.m.Unlock() // create buffer for iv, data and hmac return new(Node) } func GetChunkBuf(s string) []byte { chunk_stats.m.Lock() if _, ok := chunk_stats.alloc_map[s]; !ok { chunk_stats.alloc_map[s] = 0 } chunk_stats.alloc_map[s] += 1 chunk_stats.all += 1 if chunk_stats.all > chunk_stats.max { chunk_stats.max = chunk_stats.all } chunk_stats.m.Unlock() return chunkPool.Get().([]byte) } func FreeChunkBuf(s string, buf []byte) { chunk_stats.m.Lock() if _, ok := chunk_stats.free_map[s]; !ok { chunk_stats.free_map[s] = 0 } chunk_stats.free_map[s] += 1 chunk_stats.all -= 1 chunk_stats.m.Unlock() chunkPool.Put(buf) } func GetNode() *Node { node_stats.m.Lock() node_stats.alloc += 1 node_stats.all += 1 if node_stats.all > node_stats.max { node_stats.max = node_stats.all } node_stats.m.Unlock() return nodePool.Get().(*Node) } func FreeNode(n *Node) { node_stats.m.Lock() node_stats.all -= 1 node_stats.free += 1 node_stats.m.Unlock() nodePool.Put(n) } func PoolAlloc() { // fmt.Fprintf(os.Stderr, "alloc max: %d, new: %d\n", chunk_stats.max, chunk_stats.new) // for k, v := range chunk_stats.alloc_map { // fmt.Fprintf(os.Stderr, "alloc[%s] %d, free %d diff: %d\n", k, v, chunk_stats.free_map[k], v-chunk_stats.free_map[k]) // } // fmt.Fprintf(os.Stderr, "nodes alloc max: %d, new: %d\n", node_stats.max, node_stats.new) // fmt.Fprintf(os.Stderr, "alloc %d, free %d diff: %d\n", node_stats.alloc, node_stats.free, node_stats.alloc-node_stats.free) }