From eef7ffbe6e32fcb9f47f053a26c68f81504d421b Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Sun, 11 Dec 2016 19:41:23 -0800
Subject: [PATCH] bench: add buffer writer bench.

---
 bench/buffer.js | 50 +++++++++++++++++++++++++++++++++++++++++++++++++
 bench/tx.js     | 12 ++++++------
 2 files changed, 56 insertions(+), 6 deletions(-)
 create mode 100644 bench/buffer.js

diff --git a/bench/buffer.js b/bench/buffer.js
new file mode 100644
index 00000000..ad509f8b
--- /dev/null
+++ b/bench/buffer.js
@@ -0,0 +1,50 @@
+'use strict';
+
+var fs = require('fs');
+var TX = require('../lib/primitives/tx');
+var CoinView = require('../lib/coins/coinview');
+var BufferWriter = require('../lib/utils/writer');
+var StaticWriter = require('../lib/utils/staticwriter');
+var bench = require('./bench');
+
+var tx3 = parseTX('../test/data/tx3.hex');
+var wtx = fs.readFileSync(__dirname + '/../test/data/wtx.hex', 'utf8');
+var i, tx, end, raw;
+
+wtx = new Buffer(wtx.trim(), 'hex');
+tx = TX.fromRaw(wtx);
+
+function parseTX(file) {
+  var data = fs.readFileSync(__dirname + '/' + file, 'utf8');
+  var parts = data.trim().split(/\n+/);
+  var raw = parts[0];
+  var tx = TX.fromRaw(raw.trim(), 'hex');
+  var view = new CoinView();
+  var i, prev;
+
+  for (i = 1; i < parts.length; i++) {
+    raw = parts[i];
+    prev = TX.fromRaw(raw.trim(), 'hex');
+    view.addTX(prev, -1);
+  }
+
+  return { tx: tx, view: view };
+}
+
+end = bench('serialize (static-writer)');
+for (i = 0; i < 10000; i++) {
+  tx._raw = null;
+  tx._size = -1;
+  tx._witness = -1;
+  raw = tx.writeWitness(new StaticWriter(tx.getWitnessSizes().total)).render();
+}
+end(i);
+
+end = bench('serialize (buffer-writer)');
+for (i = 0; i < 10000; i++) {
+  tx._raw = null;
+  tx._size = -1;
+  tx._witness = -1;
+  raw = tx.writeWitness(new BufferWriter()).render();
+}
+end(i);
diff --git a/bench/tx.js b/bench/tx.js
index 4f8cfa29..36fcd004 100644
--- a/bench/tx.js
+++ b/bench/tx.js
@@ -15,7 +15,7 @@ var json = require('../test/data/block300025.json');
 var block = Block.fromJSON(json);
 var btx = { tx: block.txs[397], view: new CoinView() };
 
-var tx1 = parseTX('../test/data/tx3.hex');
+var tx3 = parseTX('../test/data/tx3.hex');
 var wtx = fs.readFileSync(__dirname + '/../test/data/wtx.hex', 'utf8');
 var i, tx, raw, end, flags, input;
 
@@ -58,8 +58,8 @@ end(i);
 
 end = bench('hash');
 for (i = 0; i < 3000; i++) {
-  tx1.tx.hash();
-  tx1.tx._hash = null;
+  tx3.tx.hash();
+  tx3.tx._hash = null;
 }
 end(i);
 
@@ -92,12 +92,12 @@ end(i);
 
 end = bench('verify');
 for (i = 0; i < 3000; i++)
-  tx1.tx.verify(tx1.view, constants.flags.VERIFY_P2SH);
-end(i * tx1.tx.inputs.length);
+  tx3.tx.verify(tx3.view, constants.flags.VERIFY_P2SH);
+end(i * tx3.tx.inputs.length);
 
 end = bench('fee');
 for (i = 0; i < 1000; i++)
-  tx1.tx.getFee(tx1.view);
+  tx3.tx.getFee(tx3.view);
 end(i);
 
 flags = constants.flags.VERIFY_P2SH | constants.flags.VERIFY_DERSIG;