Merge pull request #2326 from karalabe/goleveldb-datarace-fix

Godeps: pull in the leveldb upstream write race fix

Godeps/Godeps.json

@@ -140,51 +140,51 @@
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/cache",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/comparer",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/errors",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/filter",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/iterator",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/journal",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/memdb",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/opt",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/storage",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/table",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "github.com/syndtr/goleveldb/leveldb/util",
-			"Rev": "ad0d8b2ab58a55ed5c58073aa46451d5e1ca1280"
+			"Rev": "917f41c560270110ceb73c5b38be2a9127387071"
 		},
 		{
 			"ImportPath": "golang.org/x/crypto/pbkdf2",

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/db_write.go

@@ -166,15 +166,15 @@ func (db *DB) Write(b *Batch, wo *opt.WriteOptions) (err error) {
 	merged := 0
 	danglingMerge := false
 	defer func() {
+		for i := 0; i < merged; i++ {
+			db.writeAckC <- err
+		}
 		if danglingMerge {
 			// Only one dangling merge at most, so this is safe.
 			db.writeMergedC <- false
 		} else {
 			<-db.writeLockC
 		}
-		for i := 0; i < merged; i++ {
-			db.writeAckC <- err
-		}
 	}()
 
 	mdb, mdbFree, err := db.flush(b.size())

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/util/pool.go

-// Copyright (c) 2014, Suryandaru Triandana <syndtr@gmail.com>
-// All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// +build go1.3
-
-package util
-
-import (
-	"sync"
-)
-
-type Pool struct {
-	sync.Pool
-}
-
-func NewPool(cap int) *Pool {
-	return &Pool{}
-}

Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/util/pool_legacy.go

-// Copyright (c) 2014, Suryandaru Triandana <syndtr@gmail.com>
-// All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// +build !go1.3
-
-package util
-
-type Pool struct {
-	pool chan interface{}
-}
-
-func (p *Pool) Get() interface{} {
-	select {
-	case x := <-p.pool:
-		return x
-	default:
-		return nil
-	}
-}
-
-func (p *Pool) Put(x interface{}) {
-	select {
-	case p.pool <- x:
-	default:
-	}
-}
-
-func NewPool(cap int) *Pool {
-	return &Pool{pool: make(chan interface{}, cap)}
-}