tools: run the tick processor without building v8

Currently, v8 native deps must be built in order to run the log
processor on node profiling output. These scripts use node instead
of d8 to remove this dependency.

This change was originally proposed to the v8 team but since the
changes are not v8 specific, we have moved the proposal here. See:
https://codereview.chromium.org/1179173009/

PR-URL: https://github.com/nodejs/node/pull/2090
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>

test/parallel/test-tick-processor.js

@@ -0,0 +1,45 @@
+'use strict';
+var fs = require('fs');
+var assert = require('assert');
+var path = require('path');
+var cp = require('child_process');
+var common = require('../common');
+
+common.refreshTmpDir();
+
+process.chdir(common.tmpDir);
+cp.execFileSync(process.execPath, ['-prof', '-pe',
+    'function foo(n) {' +
+    'require(\'vm\').runInDebugContext(\'Debug\');' +
+    'return n < 2 ? n : setImmediate(function() { foo(n-1) + foo(n-2);}); };' +
+    'setTimeout(function() { process.exit(0); }, 2000);' +
+    'foo(40);']);
+var matches = fs.readdirSync(common.tmpDir).filter(function(file) {
+  return /^isolate-/.test(file);
+});
+if (matches.length != 1) {
+  assert.fail('There should be a single log file.');
+}
+var log = matches[0];
+var processor =
+    path.join(common.testDir, '..', 'tools', 'v8-prof', getScriptName());
+var out = cp.execSync(processor + ' ' + log, {encoding: 'utf8'});
+assert(out.match(/LazyCompile.*foo/));
+if (process.platform === 'win32' ||
+    process.platform === 'sunos' ||
+    process.platform === 'freebsd') {
+  console.log('1..0 # Skipped: C++ symbols are not mapped for this os.');
+  return;
+}
+assert(out.match(/RunInDebugContext/));
+
+function getScriptName() {
+  switch (process.platform) {
+    case 'darwin':
+      return 'mac-tick-processor';
+    case 'win32':
+      return 'windows-tick-processor.bat';
+    default:
+      return 'linux-tick-processor';
+  }
+}

tools/v8-prof/linux-tick-processor

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+umask 077
+TEMP_SCRIPT_FILE="/tmp/node-tick-processor-input-script-$$"
+tools_path=`cd $(dirname "$0");pwd`
+v8_tools="$tools_path/../../deps/v8/tools"
+
+cat "$tools_path/polyfill.js" "$v8_tools/splaytree.js" "$v8_tools/codemap.js" \
+  "$v8_tools/csvparser.js" "$v8_tools/consarray.js" \
+  "$v8_tools/profile.js" "$v8_tools/profile_view.js" \
+  "$v8_tools/logreader.js" "$v8_tools/tickprocessor.js" \
+  "$v8_tools/SourceMap.js" \
+  "$v8_tools/tickprocessor-driver.js" >> "$TEMP_SCRIPT_FILE"
+
+NODE=${NODE:-node}
+
+if [ ! -x "$NODE" ] && [ -x "$(dirname "$0")/../../iojs" ]; then
+  NODE="$(dirname "$0")/../../iojs"
+fi
+
+"$NODE" "$TEMP_SCRIPT_FILE" $@
+
+rm -f "$TEMP_SCRIPT_FILE"

tools/v8-prof/mac-tick-processor

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+# A wrapper script to call 'linux-tick-processor' with Mac-specific settings.
+
+tools_path=`cd $(dirname "$0");pwd`
+v8_tools="$tools_path/../../deps/v8/tools"
+"$tools_path/linux-tick-processor" --mac --nm="$v8_tools/mac-nm" $@

tools/v8-prof/polyfill.js

@@ -0,0 +1,92 @@
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Node polyfill
+var fs = require('fs');
+var os = {
+  system: function(name, args) {
+    if (process.platform === 'linux' && name === 'nm') {
+      // Filter out vdso and vsyscall entries.
+      var arg = args[args.length - 1];
+      if (arg === '[vdso]' ||
+          arg == '[vsyscall]' ||
+          /^[0-9a-f]+-[0-9a-f]+$/.test(arg)) {
+        return '';
+      }
+    }
+    return require('child_process').execFileSync(
+        name, args, {encoding: 'utf8'});
+  }
+};
+var print = console.log;
+function read(fileName) {
+  return fs.readFileSync(fileName, 'utf8');
+}
+arguments = process.argv.slice(2);
+
+// Polyfill "readline()".
+var fd = fs.openSync(arguments[arguments.length - 1], 'r');
+var buf = new Buffer(4096);
+var dec = new (require('string_decoder').StringDecoder)('utf-8');
+var line = '';
+versionCheck();
+function readline() {
+  while (true) {
+    var lineBreak = line.indexOf('\n');
+    if (lineBreak !== -1) {
+      var res = line.slice(0, lineBreak);
+      line = line.slice(lineBreak + 1);
+      return res;
+    }
+    var bytes = fs.readSync(fd, buf, 0, buf.length);
+    line += dec.write(buf.slice(0, bytes));
+    if (line.length === 0) {
+      return false;
+    }
+  }
+}
+
+function versionCheck() {
+  // v8-version looks like "v8-version,$major,$minor,$build,$patch,$candidate"
+  // whereas process.versions.v8 is either "$major.$minor.$build" or
+  // "$major.$minor.$build.$patch".
+  var firstLine = readline();
+  line = firstLine + '\n' + line;
+  firstLine = firstLine.split(',');
+  var curVer = process.versions.v8.split('.');
+  if (firstLine.length !== 6 && firstLine[0] !== 'v8-version') {
+    console.log('Unable to read v8-version from log file.');
+    return;
+  }
+  // Compare major, minor and build; ignore the patch and candidate fields.
+  for (var i = 0; i < 3; i++) {
+    if (curVer[i] !== firstLine[i + 1]) {
+      console.log('Testing v8 version different from logging version');
+      return;
+    }
+  }
+}

tools/v8-prof/windows-tick-processor.bat

@@ -0,0 +1,19 @@
+@echo off
+setlocal
+
+SET tools_dir=%~dp0
+SET v8_tools=%tools_dir%..\..\deps\v8\tools\
+
+SET temp_script=%TEMP%\node-tick-processor-input-script
+
+IF NOT DEFINED NODE (SET NODE=node.exe)
+%NODE% --version 2> NUL
+if %ERRORLEVEL%==9009 (SET NODE=%~dp0\..\..\Release\iojs.exe)
+
+
+type %tools_dir%polyfill.js %v8_tools%splaytree.js %v8_tools%codemap.js^
+ %v8_tools%csvparser.js %v8_tools%consarray.js %v8_tools%profile.js^
+ %v8_tools%profile_view.js %v8_tools%logreader.js %v8_tools%SourceMap.js^
+ %v8_tools%tickprocessor.js %v8_tools%tickprocessor-driver.js >> %temp_script%
+%NODE% %temp_script% --windows %*
+del %temp_script%