mirror of
https://github.com/octoleo/restic.git
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138 lines
3.1 KiB
Go
138 lines
3.1 KiB
Go
package restic
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import (
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"crypto/sha256"
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"sync"
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"github.com/restic/restic/chunker"
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"github.com/restic/restic/crypto"
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"github.com/restic/restic/debug"
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)
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type poolStats struct {
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m sync.Mutex
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mget map[string]int
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mput map[string]int
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mmax map[string]int
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new int
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get int
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put int
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max int
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}
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const maxCiphertextSize = crypto.Extension + chunker.MaxSize
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func (s *poolStats) Get(k string) {
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s.m.Lock()
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defer s.m.Unlock()
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s.get += 1
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cur := s.get - s.put
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if cur > s.max {
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s.max = cur
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}
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if k != "" {
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if _, ok := s.mget[k]; !ok {
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s.mget[k] = 0
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s.mput[k] = 0
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s.mmax[k] = 0
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}
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s.mget[k]++
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cur = s.mget[k] - s.mput[k]
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if cur > s.mmax[k] {
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s.mmax[k] = cur
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}
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}
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}
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func (s *poolStats) Put(k string) {
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s.m.Lock()
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defer s.m.Unlock()
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s.put += 1
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if k != "" {
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s.mput[k]++
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}
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}
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func newPoolStats() *poolStats {
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return &poolStats{
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mget: make(map[string]int),
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mput: make(map[string]int),
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mmax: make(map[string]int),
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}
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}
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var (
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chunkPool = sync.Pool{New: newChunkBuf}
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chunkerPool = sync.Pool{New: newChunker}
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chunkStats = newPoolStats()
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nodeStats = newPoolStats()
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chunkerStats = newPoolStats()
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)
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func newChunkBuf() interface{} {
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chunkStats.m.Lock()
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defer chunkStats.m.Unlock()
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chunkStats.new++
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// create buffer for iv, data and mac
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return make([]byte, maxCiphertextSize)
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}
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func newChunker() interface{} {
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chunkStats.m.Lock()
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defer chunkStats.m.Unlock()
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chunkStats.new++
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// create a new chunker with a nil reader and null polynomial
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return chunker.New(nil, 0, chunkerBufSize, sha256.New())
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}
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func GetChunkBuf(s string) []byte {
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chunkStats.Get(s)
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return chunkPool.Get().([]byte)
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}
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func FreeChunkBuf(s string, buf []byte) {
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chunkStats.Put(s)
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chunkPool.Put(buf)
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}
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func GetChunker(s string) *chunker.Chunker {
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chunkerStats.Get(s)
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return chunkerPool.Get().(*chunker.Chunker)
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}
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func FreeChunker(s string, ch *chunker.Chunker) {
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chunkerStats.Put(s)
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chunkerPool.Put(ch)
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}
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func PoolAlloc() {
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debug.Log("pools.PoolAlloc", "pool stats for chunk: new %d, get %d, put %d, diff %d, max %d\n",
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chunkStats.new, chunkStats.get, chunkStats.put, chunkStats.get-chunkStats.put, chunkStats.max)
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for k, v := range chunkStats.mget {
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debug.Log("pools.PoolAlloc", "pool stats for chunk[%s]: get %d, put %d, diff %d, max %d\n",
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k, v, chunkStats.mput[k], v-chunkStats.mput[k], chunkStats.mmax[k])
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}
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debug.Log("pools.PoolAlloc", "pool stats for node: new %d, get %d, put %d, diff %d, max %d\n",
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nodeStats.new, nodeStats.get, nodeStats.put, nodeStats.get-nodeStats.put, nodeStats.max)
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for k, v := range nodeStats.mget {
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debug.Log("pools.PoolAlloc", "pool stats for node[%s]: get %d, put %d, diff %d, max %d\n", k, v, nodeStats.mput[k], v-nodeStats.mput[k], nodeStats.mmax[k])
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}
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debug.Log("pools.PoolAlloc", "pool stats for chunker: new %d, get %d, put %d, diff %d, max %d\n",
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chunkerStats.new, chunkerStats.get, chunkerStats.put, chunkerStats.get-chunkerStats.put, chunkerStats.max)
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for k, v := range chunkerStats.mget {
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debug.Log("pools.PoolAlloc", "pool stats for chunker[%s]: get %d, put %d, diff %d, max %d\n", k, v, chunkerStats.mput[k], v-chunkerStats.mput[k], chunkerStats.mmax[k])
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}
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}
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