Misc debugger enhancements and bug fixes....

src/debug-debugger.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 636 matching lines @@
     break_point.actual_location = { line: actual_location.line,
                                     column: actual_location.column };
     break_point.setCondition(opt_condition);
     return break_point.number();
   }
 };
 
 
 Debug.enableBreakPoint = function(break_point_number) {
   var break_point = this.findBreakPoint(break_point_number, false);
-  break_point.enable();
+  // Only enable if the breakpoint hasn't been deleted:
+  if (break_point) {
+    break_point.enable();
+  }
 };
 
 
 Debug.disableBreakPoint = function(break_point_number) {
   var break_point = this.findBreakPoint(break_point_number, false);
-  break_point.disable();
+  // Only enable if the breakpoint hasn't been deleted:
+  if (break_point) {
+    break_point.disable();
+  }
 };
 
 
 Debug.changeBreakPointCondition = function(break_point_number, condition) {
   var break_point = this.findBreakPoint(break_point_number, false);
   break_point.setCondition(condition);
 };
 
 
 Debug.changeBreakPointIgnoreCount = function(break_point_number, ignoreCount) {
@@ skipping 20 matching lines @@
 
 Debug.clearAllBreakPoints = function() {
   for (var i = 0; i < break_points.length; i++) {
     break_point = break_points[i];
     %ClearBreakPoint(break_point);
   }
   break_points = [];
 };
 
 
+Debug.disableAllBreakPoints = function() {
+  // Disable all user defined breakpoints:
+  for (var i = 1; i < next_break_point_number; i++) {
+    Debug.disableBreakPoint(i);
+  }
+  // Disable all exception breakpoints:
+  %ChangeBreakOnException(Debug.ExceptionBreak.Caught, false);
+  %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, false);
+};
+
+
 Debug.findScriptBreakPoint = function(break_point_number, remove) {
   var script_break_point;
   for (var i = 0; i < script_break_points.length; i++) {
     if (script_break_points[i].number() == break_point_number) {
       script_break_point = script_break_points[i];
       // Remove the break point from the list if requested.
       if (remove) {
         script_break_point.clear();
         script_break_points.splice(i,1);
       }
@@ skipping 620 matching lines @@
       } else if (request.command == 'break') {
         this.breakRequest_(request, response);
       } else if (request.command == 'setbreakpoint') {
         this.setBreakPointRequest_(request, response);
       } else if (request.command == 'changebreakpoint') {
         this.changeBreakPointRequest_(request, response);
       } else if (request.command == 'clearbreakpoint') {
         this.clearBreakPointRequest_(request, response);
       } else if (request.command == 'clearbreakpointgroup') {
         this.clearBreakPointGroupRequest_(request, response);
+      } else if (request.command == 'disconnect') {
+        this.disconnectRequest_(request, response);
+      } else if (request.command == 'setexceptionbreak') {
+        this.setExceptionBreakRequest_(request, response);
       } else if (request.command == 'listbreakpoints') {
         this.listBreakpointsRequest_(request, response);
       } else if (request.command == 'backtrace') {
         this.backtraceRequest_(request, response);
       } else if (request.command == 'frame') {
         this.frameRequest_(request, response);
       } else if (request.command == 'scopes') {
         this.scopesRequest_(request, response);
       } else if (request.command == 'scope') {
         this.scopeRequest_(request, response);
@@ skipping 12 matching lines @@
       } else if (request.command == 'suspend') {
         this.suspendRequest_(request, response);
       } else if (request.command == 'version') {
         this.versionRequest_(request, response);
       } else if (request.command == 'profile') {
         this.profileRequest_(request, response);
       } else if (request.command == 'changelive') {
         this.changeLiveRequest_(request, response);
       } else if (request.command == 'flags') {
         this.debuggerFlagsRequest_(request, response);
+      } else if (request.command == 'v8flags') {
+        this.v8FlagsRequest_(request, response);
+
+      // GC tools:
+      } else if (request.command == 'gc') {
+        this.gcRequest_(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 297 matching lines @@
     if (break_point.type() == Debug.ScriptBreakPointType.ScriptId) {
       description.type = 'scriptId';
       description.script_id = break_point.script_id();
     } else {
       description.type = 'scriptName';
       description.script_name = break_point.script_name();
     }
     array.push(description);
   }
 
-  response.body = { breakpoints: array }
+  response.body = {
+    breakpoints: array,
+    breakOnExceptions: Debug.isBreakOnException(),
+    breakOnUncaughtExceptions: Debug.isBreakOnUncaughtException()
+  }
+}
+
+
+DebugCommandProcessor.prototype.disconnectRequest_ =
+    function(request, response) {
+  Debug.disableAllBreakPoints();
+  this.continueRequest_(request, response);
+}
+
+
+DebugCommandProcessor.prototype.setExceptionBreakRequest_ =
+    function(request, response) {
+  // Check for legal request.
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  // Pull out and check the 'type' argument:
+  var type = request.arguments.type;
+  if (!type) {
+    response.failed('Missing argument "type"');
+    return;
+  }
+
+  // Initialize the default value of enable:
+  var enabled;
+  if (type == 'all') {
+    enabled = !Debug.isBreakOnException();
+  } else if (type == 'uncaught') {
+    enabled = !Debug.isBreakOnUncaughtException();
+  }  
+
+  // Pull out and check the 'enabled' argument if present:
+  if (!IS_UNDEFINED(request.arguments.enabled)) {
+    enabled = request.arguments.enabled;
+    if ((enabled != true) && (enabled != false)) {
+      response.failed('Illegal value for "enabled":"' + enabled + '"');
+    }
+  }
+
+  // Now set the exception break state:
+  if (type == 'all') {
+    %ChangeBreakOnException(Debug.ExceptionBreak.Caught, enabled);
+  } else if (type == 'uncaught') {
+    %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, enabled);
+  } else {
+    response.failed('Unknown "type":"' + type + '"');
+  }
+
+  // Add the cleared break point number to the response.
+  response.body = { 'type': type, 'enabled': enabled };
 }
 
 
 DebugCommandProcessor.prototype.backtraceRequest_ = function(request, response) {
   // Get the number of frames.
   var total_frames = this.exec_state_.frameCount();
 
   // Create simple response if there are no frames.
   if (total_frames == 0) {
     response.body = {
@@ skipping 336 matching lines @@
       response.setOption('includeSource', includeSource);
     }
 
     if (IS_ARRAY(request.arguments.ids)) {
       idsToInclude = {};
       var ids = request.arguments.ids;
       for (var i = 0; i < ids.length; i++) {
         idsToInclude[ids[i]] = true;
       }
     }
+
+    var filterStr = null;
+    var filterNum = null;
+    if (!IS_UNDEFINED(request.arguments.filter)) {
+      var num = %ToNumber(request.arguments.filter);
+      if (!isNaN(num)) {
+        filterNum = num;
+      }
+      filterStr = request.arguments.filter;
+    }
   }
 
   // Collect all scripts in the heap.
   var scripts = %DebugGetLoadedScripts();
 
   response.body = [];
 
   for (var i = 0; i < scripts.length; i++) {
     if (idsToInclude && !idsToInclude[scripts[i].id]) {
       continue;
     }
+    if (filterStr || filterNum) {
+      var script = scripts[i];
+      var found = false;
+      if (filterNum && !found) {
+        if (script.id && script.id === filterNum) {
+          found = true;
+        }
+      }
+      if (filterStr && !found) {
+        if (script.name && script.name.indexOf(filterStr) >= 0) {
+          found = true;
+        }
+      }
+      if (!found) continue;
+    }
     if (types & ScriptTypeFlag(scripts[i].type)) {
       response.body.push(MakeMirror(scripts[i]));
     }
   }
 };
 
 
 DebugCommandProcessor.prototype.threadsRequest_ = function(request, response) {
   // Get the number of threads.
   var total_threads = this.exec_state_.threadCount();
@@ skipping 118 matching lines @@
     }
   } else {
     for (var name in debugger_flags) {
       var value = debugger_flags[name].getValue();
       response.body.flags.push({ name: name, value: value });
     }
   }
 }
 
 
+DebugCommandProcessor.prototype.v8FlagsRequest_ = function(request, response) {
+  var flags = request.arguments.flags;
+  if (!flags) flags = '';
+  %SetFlags(flags);
+};
+
+
+DebugCommandProcessor.prototype.gcRequest_ = function(request, response) {
+  var type = request.arguments.type;
+  if (!type) type = 'all';
+
+  var before = %GetHeapUsage();
+  %CollectGarbage(type);
+  var after = %GetHeapUsage();
+
+  response.body = { "before": before, "after": after };
+};
+
+
+
+
 // 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 83 matching lines @@
     case 'string':
     case 'number':
       json = value;
       break
 
     default:
       json = null;
   }
   return json;
 }