scripts: add heapdump script.

scripts/dump.js

@@ -0,0 +1,42 @@
+var fs = require('fs');
+var heapdump = require('heapdump');
+
+var MempoolEntry = require('../lib/mempool/mempoolentry');
+var Coins = require('../lib/blockchain/coins');
+var TX = require('../lib/primitives/tx');
+
+var SNAPSHOT = __dirname + '/../dump.heapsnapshot';
+var tx = parseTX('../test/data/tx4.hex');
+
+function parseTX(file) {
+  var filename = __dirname + '/' + file;
+  var data = fs.readFileSync(filename, 'utf8');
+  var parts = data.trim().split(/\n+/);
+  var hex = parts[0].trim();
+  var tx = TX.fromRaw(hex, 'hex');
+  var i, tx, coin;
+
+  for (i = 1; i < parts.length; i++) {
+    hex = parts[i].trim();
+    coin = TX.fromRaw(hex, 'hex');
+    tx.fillCoins(coin);
+  }
+
+  return tx;
+}
+
+var coins = Coins.fromRaw(Coins.fromTX(tx).toRaw(), tx.hash('hex'));
+var entry = MempoolEntry.fromTX(tx, 1000000);
+
+setInterval(function() {
+  console.log(tx.hash('hex'));
+  console.log(coins.hash);
+  console.log(entry.tx);
+}, 60 * 1000)
+
+setImmediate(function() {
+  heapdump.writeSnapshot(SNAPSHOT, function(err) {
+    if (err)
+      throw err;
+  });
+});