Introduce more debug events for promises.

BUG=v8:3093
LOG=Y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/393283007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22591 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/debug-debugger.js

@@ -1202,9 +1202,15 @@ function MakeScriptObject_(script, include_source) {
 
 
 function MakePromiseEvent(event_data) {
-  if (event_data.type = "new Promise") {
+  if (event_data.type == "new") {
     return new NewPromiseEvent(event_data);
   }
+  if (event_data.type == "update") {
+    return new UpdatePromiseStatusEvent(event_data);
+  }
+  if (event_data.type == "chain") {
+    return new UpdatePromiseParentEvent(event_data);
+  }
 }
 
 
@@ -1227,6 +1233,40 @@ NewPromiseEvent.prototype.resolver = function() {
 }
 
 
+function UpdatePromiseStatusEvent(event_data) {
+  this.promise_ = event_data.promise;
+  this.status_ = event_data.status;
+  this.value_ = event_data.value;
+}
+
+
+UpdatePromiseStatusEvent.prototype.promise = PromiseGetter;
+
+
+UpdatePromiseStatusEvent.prototype.status = function() {
+  return this.status_;
+}
+
+
+UpdatePromiseStatusEvent.prototype.value = function() {
+  return MakeMirror(this.value_);
+}
+
+
+function UpdatePromiseParentEvent(event_data) {
+  this.promise_ = event_data.promise;
+  this.parentPromise_ = event_data.parentPromise;
+}
+
+
+UpdatePromiseParentEvent.prototype.promise = PromiseGetter;
+
+
+UpdatePromiseParentEvent.prototype.parentPromise = function() {
+  return MakeMirror(this.parentPromise_);
+}
+
+
 function MakeAsyncTaskEvent(event_data) {
   return new AsyncTaskEvent(event_data);
 }

src/promise.js

@@ -40,7 +40,7 @@ var lastMicrotaskId = 0;
       throw MakeTypeError('resolver_not_a_function', [resolver]);
     var promise = PromiseInit(this);
     if (DEBUG_IS_ACTIVE) {
-      %DebugPromiseEvent({ type : "new Promise",
+      %DebugPromiseEvent({ type : "new",
                            promise: this,
                            resolver: resolver });
     }
@@ -62,6 +62,12 @@ var lastMicrotaskId = 0;
     SET_PRIVATE(promise, promiseValue, value);
     SET_PRIVATE(promise, promiseOnResolve, onResolve);
     SET_PRIVATE(promise, promiseOnReject, onReject);
+    if (DEBUG_IS_ACTIVE && status !== 0) {
+      %DebugPromiseEvent({ type: "update",
+                           promise: promise,
+                           status: status,
+                           value: value });
+    }
     return promise;
   }
 
@@ -234,6 +240,11 @@ var lastMicrotaskId = 0;
                        -1);
         break;
     }
+    if (DEBUG_IS_ACTIVE) {
+      %DebugPromiseEvent({ type: "chain",
+                           promise: deferred.promise,
+                           parentPromise: this });
+    }
     return deferred.promise;
   }
 

test/mjsunit/es6/debug-promises-new-event.js

@@ -10,7 +10,7 @@ var exception = null;
 var new_promise;
 
 function listener(event, exec_state, event_data, data) {
-  if (event != Debug.DebugEvent.PromiseEvent) return;
+  if (!(event_data instanceof debug.NewPromiseEvent)) return;
   try {
     assertTrue(event_data.resolver().isFunction());
     assertEquals(resolver, event_data.resolver().value());

tools/generate-runtime-tests.py

@@ -51,7 +51,7 @@ EXPECTED_FUNCTION_COUNT = 420
 EXPECTED_FUZZABLE_COUNT = 335
 EXPECTED_CCTEST_COUNT = 8
 EXPECTED_UNKNOWN_COUNT = 4
-EXPECTED_BUILTINS_COUNT = 813
+EXPECTED_BUILTINS_COUNT = 815
 
 
 # Don't call these at all.