Add thread information to the debugger

src/d8.js

 // Copyright 2008 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 306 matching lines @@
       
     case 'break':
     case 'b':
       this.request_ = this.breakCommandToJSONRequest_(args);
       break;
       
     case 'clear':
       this.request_ = this.clearCommandToJSONRequest_(args);
       break;
 
+    case 'threads':
+      this.request_ = this.threadsCommandToJSONRequest_(args);
+      break;
+
     case 'trace':
       // Return undefined to indicate command handled internally (no JSON).
       this.request_ = void 0;
       this.traceCommand_(args);
       break;
 
     case 'help':
     case '?':
       this.helpCommand_(args);
       // Return undefined to indicate command handled internally (no JSON).
@@ skipping 342 matching lines @@
     request.arguments = {};
     request.arguments.breakpoint = parseInt(args);
   } else {
     throw new Error('Invalid break arguments.');
   }
 
   return request.toJSONProtocol();
 };
 
 
+// Create a JSON request for the threads command.
+DebugRequest.prototype.threadsCommandToJSONRequest_ = function(args) {
+  // Build a threads request from the text command.
+  var request = this.createRequest('threads');
+  return request.toJSONProtocol();
+};
+
+
 // Handle the trace command.
 DebugRequest.prototype.traceCommand_ = function(args) {
   // Process arguments.
   if (args && args.length > 0) {
     if (args == 'compile') {
       trace_compile = !trace_compile;
       print('Tracing of compiled scripts ' + (trace_compile ? 'on' : 'off'));
     } else {
       throw new Error('Invalid trace arguments.');
     }
@@ skipping 213 matching lines @@
           var sourceStart = body[i].sourceStart;
           if (sourceStart.length > 40) {
             sourceStart = sourceStart.substring(0, 37) + '...';
           }
           result += sourceStart;
           result += ']';
         }
         details.text = result;
         break;
 
+      case 'threads':
+        var result = 'Active V8 threads: ' + body.totalThreads + '\n';
+        body.threads.sort(function(a, b) { return a.id - b.id; });
+        for (i = 0; i < body.threads.length; i++) {
+          result += body.threads[i].current ? '*' : ' ';
+          result += ' ';
+          result += body.threads[i].id;
+          result += '\n';
+        }
+        details.text = result;
+        break;
+
       case 'continue':
         details.text = "(running)";
         break;
         
       default:
         details.text =
             'Response for unknown command \'' + response.command + '\'' +
             ' (' + json_response + ')';
     }
   } catch (e) {
@@ skipping 469 matching lines @@
       json += NumberToJSON_(elem);
     } else if (typeof(elem) === 'string')  {
       json += StringToJSON_(elem);
     } else {
       json += elem;
     }
   }
   json += ']';
   return json;
 }