add locker. refactor.

lib/bcoin.js

@@ -83,6 +83,7 @@ bcoin.debug = function debug() {
 bcoin.utils = utils;
 bcoin.utils.debug = bcoin.debug;
 bcoin.utils.ensurePrefix = bcoin.ensurePrefix;
+bcoin.locker = require('./bcoin/locker');
 bcoin.reader = require('./bcoin/reader');
 bcoin.writer = require('./bcoin/writer');
 bcoin.profiler = require('./bcoin/profiler');

lib/bcoin/address.js

@@ -558,7 +558,6 @@ Address.prototype.toJSON = function toJSON(passphrase) {
     key: key.toJSON(passphrase),
     type: this.type,
     witness: this.witness,
-    redeem: this.redeem ? utils.toHex(this.redeem) : null,
     keys: this.keys.map(utils.toBase58),
     m: this.m,
     n: this.n
@@ -583,7 +582,6 @@ Address.fromJSON = function fromJSON(json, passphrase) {
     key: bcoin.keypair.fromJSON(json.key, passphrase),
     type: json.type,
     witness: json.witness,
-    redeem: json.redeem ? new Buffer(json.redeem, 'hex') : null,
     keys: json.keys.map(utils.fromBase58),
     m: json.m,
     n: json.n

lib/bcoin/chain.js

@@ -33,14 +33,10 @@ function Chain(node, options) {
   this.loaded = false;
   this.mempool = node.mempool;
   this.db = new bcoin.chaindb(this, options);
-  this.busy = false;
-  this.jobs = [];
-  this.pending = [];
-  this.pendingBlocks = {};
-  this.pendingSize = 0;
   this.total = 0;
-  this.orphanLimit = options.orphanLimit || 20 * 1024 * 1024;
+  this.orphanLimit = options.orphanLimit || (20 << 20);
-  this.pendingLimit = options.pendingLimit || 20 * 1024 * 1024;
+  this.pendingLimit = options.pendingLimit || (20 << 20);
+  this.locker = new bcoin.locker(this, this.add, this.pendingLimit);
   this.invalid = {};
   this.bestHeight = -1;
   this.lastUpdate = utils.now();
@@ -181,61 +177,7 @@ Chain.prototype.open = function open(callback) {
 };
 
 Chain.prototype._lock = function _lock(func, args, force) {
-  var self = this;
+  return this.locker.lock(func, args, force);
-  var block, called;
-
-  if (force) {
-    assert(this.busy);
-    return function unlock() {
-      assert(!called);
-      called = true;
-    };
-  }
-
-  if (this.busy) {
-    if (func === Chain.prototype.add) {
-      block = args[0];
-      this.pending.push(block);
-      this.pendingBlocks[block.hash('hex')] = true;
-      this.pendingSize += block.getSize();
-      if (this.pendingSize > this.pendingLimit) {
-        this.purgePending();
-        return;
-      }
-    }
-    this.jobs.push([func, args]);
-    return;
-  }
-
-  this.busy = true;
-
-  return function unlock() {
-    var item, block;
-
-    assert(!called);
-    called = true;
-
-    self.busy = false;
-
-    if (func === Chain.prototype.add) {
-      if (self.pending.length === 0)
-        self.emit('flush');
-    }
-
-    if (self.jobs.length === 0)
-      return;
-
-    item = self.jobs.shift();
-
-    if (item[0] === Chain.prototype.add) {
-      block = item[1][0];
-      assert(block === self.pending.shift());
-      delete self.pendingBlocks[block.hash('hex')];
-      self.pendingSize -= block.getSize();
-    }
-
-    item[0].apply(self, item[1]);
-  };
 };
 
 // Stream headers from electrum.org for quickly
@@ -962,10 +904,7 @@ Chain.prototype.resetTime = function resetTime(ts, callback, force) {
 };
 
 Chain.prototype.onFlush = function onFlush(callback) {
-  if (this.pending.length === 0)
+  return this.locker.onFlush(callback);
-    return callback();
-
-  this.once('flush', callback);
 };
 
 Chain.prototype.add = function add(initial, peer, callback, force) {
@@ -1300,21 +1239,7 @@ Chain.prototype.pruneOrphans = function pruneOrphans(peer) {
 };
 
 Chain.prototype.purgePending = function purgePending() {
-  var self = this;
+  return this.locker.purgePending();
-
-  utils.debug('Warning: %dmb of pending blocks. Purging.',
-    utils.mb(this.pendingSize));
-
-  this.pending.forEach(function(block) {
-    delete self.pendingBlocks[block.hash('hex')];
-  });
-
-  this.pending.length = 0;
-  this.pendingSize = 0;
-
-  this.jobs = this.jobs.filter(function(item) {
-    return item[0] !== Chain.prototype.add;
-  });
 };
 
 Chain.prototype.has = function has(hash, callback) {
@@ -1409,7 +1334,7 @@ Chain.prototype.hasPending = function hasPending(hash) {
   else if (hash.hash)
     hash = hash.hash('hex');
 
-  return !!this.pendingBlocks[hash];
+  return this.locker.hasPending(hash);
 };
 
 Chain.prototype.getEntry = function getEntry(hash, callback) {

lib/bcoin/locker.js

@@ -0,0 +1,125 @@
+/**
+ * locker.js - lock and queue for bcoin
+ * Copyright (c) 2014-2015, Fedor Indutny (MIT License)
+ * https://github.com/indutny/bcoin
+ */
+
+var EventEmitter = require('events').EventEmitter;
+var utils = require('./utils');
+var assert = utils.assert;
+
+/**
+ * Locker
+ */
+
+function Locker(parent, add, limit) {
+  if (!(this instanceof Locker))
+    return Locker(parent, add, limit);
+
+  this.parent = parent;
+  this.jobs = [];
+  this.busy = false;
+
+  this.pending = [];
+  this.pendingMap = {};
+  this.pendingSize = 0;
+  this.pendingLimit = limit || (20 << 20);
+  this.add = add;
+}
+
+utils.inherits(Locker, EventEmitter);
+
+Locker.prototype.hasPending = function hasPending(key) {
+  return this.pendingMap[key] === true;
+};
+
+Locker.prototype.lock = function lock(func, args, force) {
+  var self = this;
+  var obj, called;
+
+  if (force) {
+    assert(this.busy);
+    return function unlock() {
+      assert(!called);
+      called = true;
+    };
+  }
+
+  if (this.busy) {
+    if (this.add && func === this.add) {
+      obj = args[0];
+      this.pending.push(obj);
+      this.pendingMap[obj.hash('hex')] = true;
+      this.pendingSize += obj.getSize();
+      if (this.pendingSize > this.pendingLimit) {
+        this.purgePending();
+        return;
+      }
+    }
+    this.jobs.push([func, args]);
+    return;
+  }
+
+  this.busy = true;
+
+  return function unlock() {
+    var item, obj;
+
+    assert(!called);
+    called = true;
+
+    self.busy = false;
+
+    if (self.add && func === self.add) {
+      if (self.pending.length === 0)
+        self.emit('flush');
+    }
+
+    if (self.jobs.length === 0)
+      return;
+
+    item = self.jobs.shift();
+
+    if (self.add && item[0] === self.add) {
+      obj = item[1][0];
+      assert(obj === self.pending.shift());
+      delete self.pendingMap[obj.hash('hex')];
+      self.pendingSize -= obj.getSize();
+    }
+
+    item[0].apply(self.parent, item[1]);
+  };
+};
+
+Locker.prototype.purgePending = function purgePending() {
+  var self = this;
+
+  assert(this.add);
+
+  utils.debug('Warning: %dmb of pending objects. Purging.',
+    utils.mb(this.pendingSize));
+
+  this.pending.forEach(function(obj) {
+    delete self.pendingMap[obj.hash('hex')];
+  });
+
+  this.pending.length = 0;
+  this.pendingSize = 0;
+
+  this.jobs = this.jobs.filter(function(item) {
+    return item[0] !== self.add;
+  });
+};
+
+Locker.prototype.onFlush = function onFlush(callback) {
+  if (this.pending.length === 0)
+    return callback();
+
+  this.once('flush', callback);
+};
+
+/**
+ * Expose
+ */
+
+module.exports = Locker;

lib/bcoin/mempool.js

@@ -13,6 +13,7 @@ var utils = require('./utils');
 var assert = utils.assert;
 var BufferWriter = require('./writer');
 var BufferReader = require('./reader');
+var DUMMY_PEER = { sendReject: function() {} };
 
 /**
  * Mempool
@@ -69,9 +70,12 @@ function Mempool(node, options) {
 
 utils.inherits(Mempool, EventEmitter);
 
+Mempool.flags = constants.flags.STANDARD_VERIFY_FLAGS;
+Mempool.mandatory = constants.flags.MANDATORY_VERIFY_FLAGS;
+
 Mempool.prototype._lock = function _lock(func, args, force) {
   var self = this;
-  var block, called;
+  var tx, called;
 
   if (force) {
     assert(this.busy);
@@ -223,9 +227,6 @@ Mempool.prototype.hasTX = function hasTX(hash, callback) {
   });
 };
 
-Mempool.flags = constants.flags.STANDARD_VERIFY_FLAGS;
-Mempool.mandatory = constants.flags.MANDATORY_VERIFY_FLAGS;
-
 Mempool.prototype.add =
 Mempool.prototype.addTX = function addTX(tx, peer, callback, force) {
   var self = this;
@@ -236,6 +237,14 @@ Mempool.prototype.addTX = function addTX(tx, peer, callback, force) {
   if (!unlock)
     return;
 
+  if (typeof peer === 'function') {
+    callback = peer;
+    peer = null;
+  }
+
+  if (!peer)
+    peer = DUMMY_PEER;
+
   hash = tx.hash('hex');
 
   assert(tx.ts === 0);
@@ -321,18 +330,6 @@ Mempool.prototype.addUnchecked = function addUnchecked(tx, peer, callback) {
   });
 };
 
-function VerifyError(reason, score) {
-  Error.call(this);
-  if (Error.captureStackTrace)
-    Error.captureStackTrace(this, VerifyError);
-  this.type = 'VerifyError';
-  this.message = reason;
-  this.reason = score === -1 ? null : reason;
-  this.score = score;
-}
-
-utils.inherits(VerifyError, Error);
-
 Mempool.prototype.verify = function verify(tx, callback) {
   var self = this;
   var total, input, coin, i, fee, now;
@@ -607,6 +604,9 @@ Mempool.prototype.checkTX = function checkTX(tx, peer) {
   var total = new bn(0);
   var uniq = {};
 
+  if (!peer)
+    peer = DUMMY_PEER;
+
   if (tx.inputs.length === 0)
     return peer.sendReject(tx, 'bad-txns-vin-empty', 100);
 
@@ -649,6 +649,18 @@ Mempool.prototype.checkTX = function checkTX(tx, peer) {
   return true;
 };
 
+function VerifyError(reason, score) {
+  Error.call(this);
+  if (Error.captureStackTrace)
+    Error.captureStackTrace(this, VerifyError);
+  this.type = 'VerifyError';
+  this.message = reason;
+  this.reason = score === -1 ? null : reason;
+  this.score = score;
+}
+
+utils.inherits(VerifyError, Error);
+
 /**
  * Expose
  */

lib/bcoin/pool.js

@@ -754,9 +754,9 @@ Pool.prototype._handleBlock = function _handleBlock(block, peer, callback) {
           peer.queue.block.length,
           block.bits,
           self.peers.all.length,
-          self.chain.pending.length,
+          self.chain.locker.pending.length,
           self.chain.bestHeight,
-          self.chain.jobs.length);
+          self.chain.locker.jobs.length);
       }
 
       return callback(null, true);
@@ -1145,10 +1145,7 @@ Pool.prototype.watch = function watch(id) {
     else
       this.watchMap[hid] = 1;
 
-    if (this.bloom.test(id, 'hex'))
+    this.bloom.add(id);
-      return;
-
-    this.bloom.add(id, 'hex');
   }
 
   // Send it to peers
@@ -1528,7 +1525,7 @@ Pool.prototype.scheduleRequests = function scheduleRequests(peer) {
 Pool.prototype._sendRequests = function _sendRequests(peer) {
   var size, items;
 
-  if (this.chain.pending.length > 0)
+  if (this.chain.locker.pending.length > 0)
     return;
 
   if (peer.queue.block.length === 0)

lib/bcoin/utils.js

@@ -1915,6 +1915,6 @@ utils.SyncBatch = SyncBatch;
 
 if (utils.isBrowser) {
   bn.prototype.toBuffer = function toBuffer(order, size) {
-    return new Buffer(this.toArray(order, size));
+    return this.toArrayLike(Buffer, order, size);
   };
 }

lib/bcoin/workers.js

@@ -33,7 +33,7 @@ workers.spawn = function spawn(index) {
   child = cp.spawn(process.argv[0], [__filename], {
     stdio: ['pipe', 'pipe', 'inherit'],
     env: utils.merge({}, process.env, {
-      BCOIN_WORKER: index + ''
+      BCOIN_WORKER_ID: index + ''
     })
   });
 
@@ -121,7 +121,7 @@ bcoin.tx.prototype.verifyAsync = function verifyAsync(index, force, flags, callb
 
 workers.listen = function listen() {
   bcoin.debug = function debug() {
-    process.stderr.write('Worker %s: ', process.env.BCOIN_WORKER);
+    process.stderr.write('Worker ' + process.env.BCOIN_WORKER_ID + ':');
     return console.error.apply(console.error, arguments);
   };
 
@@ -372,5 +372,5 @@ function parser(onPacket) {
   };
 }
 
-if (process.env.BCOIN_WORKER)
+if (process.env.BCOIN_WORKER_ID)
   workers.listen();