Don't panic if tickprocessor can't find a shared library....

tools/tickprocessor.js

 // Copyright 2009 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
@@ skipping 139 matching lines @@
 
 TickProcessor.prototype.processLogFile = function(fileName) {
   this.lastLogFileName_ = fileName;
   var contents = readFile(fileName);
   this.processLog(contents.split('\n'));
 };
 
 
 TickProcessor.prototype.processLog = function(lines) {
   var csvParser = new devtools.profiler.CsvParser();
-  try {
-    for (var i = 0, n = lines.length; i < n; ++i) {
-      var line = lines[i];
-      if (!line) {
-        continue;
-      }
-      var fields = csvParser.parseLine(line);
-      this.dispatchLogRow(fields);
+  for (var i = 0, n = lines.length; i < n; ++i) {
+    var line = lines[i];
+    if (!line) {
+      continue;
     }
-  } catch (e) {
-    print('line ' + (i + 1) + ': ' + (e.message || e));
-    throw e;

[mnaganov (inactive), 2009/06/16 13:32:00]

Hmm... Does rethrowing an exception fails in your case?

[Erik Corry, 2009/06/16 13:44:56]

No, it just means I can't see the original backtrace in the debugger.

+    var fields = csvParser.parseLine(line);
+    this.dispatchLogRow(fields);
   }
 };
 
 
 TickProcessor.prototype.dispatchLogRow = function(fields) {
   // Obtain the dispatch.
   var command = fields[0];
   if (!(command in TickProcessor.RecordsDispatch)) {
     throw new Error('unknown command: ' + command);
   }
@@ skipping 298 matching lines @@
   this.symbols = [];
   this.parsePos = 0;
 };
 inherits(UnixCppEntriesProvider, CppEntriesProvider);
 
 
 UnixCppEntriesProvider.FUNC_RE = /^([0-9a-fA-F]{8}) . (.*)$/;
 
 
 UnixCppEntriesProvider.prototype.loadSymbols = function(libName) {
-  this.symbols = [
-    os.system('nm', ['-C', '-n', libName], -1, -1),
-    os.system('nm', ['-C', '-n', '-D', libName], -1, -1)
-  ];
-  this.parsePos = 0;
+  try {
+    this.symbols = [
+      os.system('nm', ['-C', '-n', libName], -1, -1),
+      os.system('nm', ['-C', '-n', '-D', libName], -1, -1)
+    ];
+    this.parsePos = 0;

[mnaganov (inactive), 2009/06/16 13:32:00]

You can move this assignment before the try block.

+  } catch (e) {
+    // If the library cannot be found on this system let's not panic.
+    this.symbols = [ "", "" ];

[mnaganov (inactive), 2009/06/16 13:32:00]

nit: Use single quotes.

+    this.parsePos = 0;
+  }
 };
 
 
 UnixCppEntriesProvider.prototype.parseNextLine = function() {
   if (this.symbols.length == 0) {
     return false;
   }
   var lineEndPos = this.symbols[0].indexOf('\n', this.parsePos);
   if (lineEndPos == -1) {
     this.symbols.shift();
@@ skipping 148 matching lines @@
 
 var params = processArguments(arguments);
 var tickProcessor = new TickProcessor(
     params.platform == 'unix' ? new UnixCppEntriesProvider() :
         new WindowsCppEntriesProvider(),
     params.separateIc,
     params.ignoreUnknown,
     params.stateFilter);
 tickProcessor.processLogFile(params.logFileName);
 tickProcessor.printStatistics();