Add thread information to the debugger

src/debug-delay.js

 // Copyright 2006-2008 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 734 matching lines @@
 
 ExecutionState.prototype.evaluateGlobal = function(source, disable_break) {
   return MakeMirror(
       %DebugEvaluateGlobal(this.break_id, source, Boolean(disable_break)));
 };
 
 ExecutionState.prototype.frameCount = function() {
   return %GetFrameCount(this.break_id);
 };
 
+ExecutionState.prototype.threadCount = function() {
+  return %GetThreadCount(this.break_id);
+};
+
 ExecutionState.prototype.frame = function(opt_index) {
   // If no index supplied return the selected frame.
   if (opt_index == null) opt_index = this.selected_frame;
   return new FrameMirror(this.break_id, opt_index);
 };
 
 ExecutionState.prototype.cframesValue = function(opt_from_index, opt_to_index) {
   return %GetCFrames(this.break_id);
 };
 
@@ skipping 395 matching lines @@
       } else if (request.command == 'evaluate') {
         this.evaluateRequest_(request, response);
       } else if (request.command == 'lookup') {
         this.lookupRequest_(request, response);
       } else if (request.command == 'references') {
         this.referencesRequest_(request, response);
       } else if (request.command == 'source') {
         this.sourceRequest_(request, response);
       } else if (request.command == 'scripts') {
         this.scriptsRequest_(request, response);
+      } else if (request.command == 'threads') {
+        this.threadsRequest_(request, response);
       } else {
         throw new Error('Unknown command "' + request.command + '" in request');
       }
     } catch (e) {
       // If there is no response object created one (without command).
       if (!response) {
         response = this.createResponse();
       }
       response.success = false;
       response.message = %ToString(e);
@@ skipping 486 matching lines @@
       script.lineCount = scripts[i].lineCount();
       script.sourceStart = scripts[i].source.substring(0, 80);
       script.sourceLength = scripts[i].source.length;
       script.type = scripts[i].type;
       response.body.push(script);
     }
   }
 };
 
 
+DebugCommandProcessor.prototype.threadsRequest_ = function(request, response) {
+  // Get the number of threads.
+  var total_threads = this.exec_state_.threadCount();
+
+  // Get information for all threads.
+  var threads = [];
+  for (var i = 0; i < total_threads; i++) {
+    var details = %GetThreadDetails(this.exec_state_.break_id, i);
+    var thread_info = { current: details[0],
+                        id: details[1]
+                      }
+    threads.push(thread_info);
+  }
+
+  // Create the response body.
+  response.body = {
+    totalThreads: total_threads,
+    threads: threads
+  }
+};
+
+
 // Check whether the previously processed command caused the VM to become
 // running.
 DebugCommandProcessor.prototype.isRunning = function() {
   return this.running_;
 }
 
 
 DebugCommandProcessor.prototype.systemBreak = function(cmd, args) {
   return %SystemBreak();
 };
@@ skipping 121 matching lines @@
       json += NumberToJSON_(elem);
     } else if (IS_STRING(elem)) {
       json += StringToJSON_(elem);
     } else {
       json += elem;
     }
   }
   json += ']';
   return json;
 }