DevTools: Support asynchronous call stacks on backend.

LayoutTests/http/tests/inspector/debugger-test.js

Index: LayoutTests/http/tests/inspector/debugger-test.js
diff --git a/LayoutTests/http/tests/inspector/debugger-test.js b/LayoutTests/http/tests/inspector/debugger-test.js
index c3360f4d4579180335a8014e0c1f25936252d018..9b4d04415ed70e74026209e6a657bb7b82600d88 100644
--- a/LayoutTests/http/tests/inspector/debugger-test.js
+++ b/LayoutTests/http/tests/inspector/debugger-test.js
@@ -120,31 +120,42 @@ InspectorTest.resumeExecution = function(callback)
     InspectorTest.waitUntilResumed(callback);
 };
 
-InspectorTest.captureStackTrace = function(callFrames, dropLineNumbers, printReturnValue)
+InspectorTest.captureStackTrace = function(callFrames, asyncStackTrace, options)
 {
-    InspectorTest.addResult("Call stack:");
-    for (var i = 0; i < callFrames.length; i++) {
-        var frame = callFrames[i];
-        var script = WebInspector.debuggerModel.scriptForId(frame.location.scriptId);
-        var url;
-        var lineNumber;
-        if (script) {
-            url = WebInspector.displayNameForURL(script.sourceURL);
-            lineNumber = frame.location.lineNumber + 1;
-        } else {
-            url = "(internal script)";
-            lineNumber = "(line number)";
+    options = options || {};
+
+    function printCallFrames(callFrames, indent)
+    {
+        indent = indent || "";
+        for (var i = 0; i < callFrames.length; i++) {
+            var frame = callFrames[i];
+            var script = WebInspector.debuggerModel.scriptForId(frame.location.scriptId);
+            var url;
+            var lineNumber;
+            if (script) {
+                url = WebInspector.displayNameForURL(script.sourceURL);
+                lineNumber = frame.location.lineNumber + 1;
+            } else {
+                url = "(internal script)";
+                lineNumber = "(line number)";
+            }
+            var s = "    " + i + ") " + frame.functionName + " (" + url + (options.dropLineNumbers ? "" : ":" + lineNumber) + ")";
+            InspectorTest.addResult(indent + s);
+            if (options.printReturnValue && frame.returnValue)
+                InspectorTest.addResult(indent + "       <return>: " + frame.returnValue.description);
         }
-        var s = "    " + i + ") " + frame.functionName + " (" + url + (dropLineNumbers ? "" : ":" + lineNumber) + ")";
-        InspectorTest.addResult(s);
-        if (printReturnValue && frame.returnValue)
-            InspectorTest.addResult("       <return>: " + frame.returnValue.description);
     }
-};
 
-InspectorTest.captureStackTraceExtended = function(callFrames, dropLineNumbers)
-{
-    InspectorTest.captureStackTrace(callFrames, dropLineNumbers, true);
+    InspectorTest.addResult("Call stack:");
+    printCallFrames(callFrames);
+
+    while (asyncStackTrace) {
+        InspectorTest.addResult("    [Async Call]");
+        printCallFrames(asyncStackTrace.callFrames, "    ");
+        if (asyncStackTrace.callFrames[0].functionName === "testFunction")
+            break;
+        asyncStackTrace = asyncStackTrace.asyncStackTrace;

[yurys, 2013/12/04 15:25:52]

initiatorStackTrace would be a better name for asyncStackTrace, wdyt?

[aandrey, 2013/12/04 15:57:26]

for which one? anyway "initiator" would seem confusing to me in place of any of
these

[yurys, 2013/12/05 11:37:48]

For those which are asyncStackTrace at the moment, including protocol.

[aandrey, 2013/12/05 13:03:40]

Out of these two I like "async" more.
Moreover it took me some time before I understood what you mean by "initiator".
I think "async" will be more recognizable, given that some debuggers already use
this term, e.g. in VS it's "Async Call".

+    }
 };
 
 InspectorTest.dumpSourceFrameContents = function(sourceFrame)
@@ -156,11 +167,11 @@ InspectorTest.dumpSourceFrameContents = function(sourceFrame)
     InspectorTest.addResult("==Source frame contents end==");
 };
 
-InspectorTest._pausedScript = function(callFrames, reason, auxData, breakpointIds)
+InspectorTest._pausedScript = function(callFrames, reason, auxData, breakpointIds, asyncStackTrace)
 {
     if (!InspectorTest._quiet)
         InspectorTest.addResult("Script execution paused.");
-    InspectorTest._pausedScriptArguments = [callFrames, reason, breakpointIds];
+    InspectorTest._pausedScriptArguments = [callFrames, reason, breakpointIds, asyncStackTrace];
     if (InspectorTest._waitUntilPausedCallback) {
         var callback = InspectorTest._waitUntilPausedCallback;
         delete InspectorTest._waitUntilPausedCallback;