X-Git-Url: http://git.osdn.net/view?p=bytom%2Fvapor.git;a=blobdiff_plain;f=vendor%2Fgithub.com%2Ftendermint%2Ftmlibs%2Fdb%2Fmem_db.go;fp=vendor%2Fgithub.com%2Ftendermint%2Ftmlibs%2Fdb%2Fmem_db.go;h=0000000000000000000000000000000000000000;hp=2f507321bb25e1fae837a1054ab0b7a0301b1eda;hb=54373c1a3efe0e373ec1605840a4363e4b246c46;hpb=ee01d543fdfe1fd0a4d548965c66f7923ea7b062

diff --git a/vendor/github.com/tendermint/tmlibs/db/mem_db.go b/vendor/github.com/tendermint/tmlibs/db/mem_db.go
deleted file mode 100644
index 2f507321..00000000
--- a/vendor/github.com/tendermint/tmlibs/db/mem_db.go
+++ /dev/null
@@ -1,180 +0,0 @@
-package db
-
-import (
-	"fmt"
-	"sort"
-	"strings"
-	"sync"
-)
-
-func init() {
-	registerDBCreator(MemDBBackendStr, func(name string, dir string) (DB, error) {
-		return NewMemDB(), nil
-	}, false)
-}
-
-type MemDB struct {
-	mtx sync.Mutex
-	db  map[string][]byte
-}
-
-func NewMemDB() *MemDB {
-	database := &MemDB{db: make(map[string][]byte)}
-	return database
-}
-
-func (db *MemDB) Get(key []byte) []byte {
-	db.mtx.Lock()
-	defer db.mtx.Unlock()
-	return db.db[string(key)]
-}
-
-func (db *MemDB) Set(key []byte, value []byte) {
-	db.mtx.Lock()
-	defer db.mtx.Unlock()
-	db.db[string(key)] = value
-}
-
-func (db *MemDB) SetSync(key []byte, value []byte) {
-	db.mtx.Lock()
-	defer db.mtx.Unlock()
-	db.db[string(key)] = value
-}
-
-func (db *MemDB) Delete(key []byte) {
-	db.mtx.Lock()
-	defer db.mtx.Unlock()
-	delete(db.db, string(key))
-}
-
-func (db *MemDB) DeleteSync(key []byte) {
-	db.mtx.Lock()
-	defer db.mtx.Unlock()
-	delete(db.db, string(key))
-}
-
-func (db *MemDB) Close() {
-	// Close is a noop since for an in-memory
-	// database, we don't have a destination
-	// to flush contents to nor do we want
-	// any data loss on invoking Close()
-	// See the discussion in https://github.com/tendermint/tmlibs/pull/56
-}
-
-func (db *MemDB) Print() {
-	db.mtx.Lock()
-	defer db.mtx.Unlock()
-	for key, value := range db.db {
-		fmt.Printf("[%X]:\t[%X]\n", []byte(key), value)
-	}
-}
-
-func (db *MemDB) Stats() map[string]string {
-	stats := make(map[string]string)
-	stats["database.type"] = "memDB"
-	return stats
-}
-
-type memDBIterator struct {
-	last int
-	keys []string
-	db   *MemDB
-}
-
-func newMemDBIterator() *memDBIterator {
-	return &memDBIterator{}
-}
-
-func (it *memDBIterator) Next() bool {
-	if it.last >= len(it.keys)-1 {
-		return false
-	}
-	it.last++
-	return true
-}
-
-func (it *memDBIterator) Key() []byte {
-	return []byte(it.keys[it.last])
-}
-
-func (it *memDBIterator) Value() []byte {
-	return it.db.Get(it.Key())
-}
-
-func (it *memDBIterator) Release() {
-	it.db = nil
-	it.keys = nil
-}
-
-func (it *memDBIterator) Error() error {
-	return nil
-}
-
-func (db *MemDB) Iterator() Iterator {
-	return db.IteratorPrefix([]byte{})
-}
-
-func (db *MemDB) IteratorPrefix(prefix []byte) Iterator {
-	it := newMemDBIterator()
-	it.db = db
-	it.last = -1
-
-	db.mtx.Lock()
-	defer db.mtx.Unlock()
-
-	// unfortunately we need a copy of all of the keys
-	for key, _ := range db.db {
-		if strings.HasPrefix(key, string(prefix)) {
-			it.keys = append(it.keys, key)
-		}
-	}
-	// and we need to sort them
-	sort.Strings(it.keys)
-	return it
-}
-
-func (db *MemDB) NewBatch() Batch {
-	return &memDBBatch{db, nil}
-}
-
-//--------------------------------------------------------------------------------
-
-type memDBBatch struct {
-	db  *MemDB
-	ops []operation
-}
-
-type opType int
-
-const (
-	opTypeSet    = 1
-	opTypeDelete = 2
-)
-
-type operation struct {
-	opType
-	key   []byte
-	value []byte
-}
-
-func (mBatch *memDBBatch) Set(key, value []byte) {
-	mBatch.ops = append(mBatch.ops, operation{opTypeSet, key, value})
-}
-
-func (mBatch *memDBBatch) Delete(key []byte) {
-	mBatch.ops = append(mBatch.ops, operation{opTypeDelete, key, nil})
-}
-
-func (mBatch *memDBBatch) Write() {
-	mBatch.db.mtx.Lock()
-	defer mBatch.db.mtx.Unlock()
-
-	for _, op := range mBatch.ops {
-		if op.opType == opTypeSet {
-			mBatch.db.db[string(op.key)] = op.value
-		} else if op.opType == opTypeDelete {
-			delete(mBatch.db.db, string(op.key))
-		}
-	}
-
-}