Add Inspector Agent for WebPerf, add probes in V8ScriptRunner.

third_party/WebKit/Source/bindings/core/v8/V8ScriptRunner.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 #include "bindings/core/v8/ScriptSourceCode.h"
 #include "bindings/core/v8/ScriptStreamer.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/V8ThrowException.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fetch/CachedMetadata.h"
 #include "core/fetch/ScriptResource.h"
 #include "core/frame/LocalFrame.h"
+#include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorTraceEvents.h"
 #include "core/inspector/ThreadDebugger.h"
 #include "platform/Histogram.h"
 #include "platform/ScriptForbiddenScope.h"
 #include "platform/TraceEvent.h"
 #include "public/platform/Platform.h"
 #include "wtf/CurrentTime.h"
 
 #if OS(WIN)
 #include <malloc.h>
@@ skipping 348 matching lines @@
     ASSERT(!script.IsEmpty());
     ScopedFrameBlamer frameBlamer(context->isDocument() ? toDocument(context)->frame() : nullptr);
     TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
     TRACE_EVENT1("v8", "v8.run", "fileName", TRACE_STR_COPY(*v8::String::Utf8Value(script->GetUnboundScript()->GetScriptName())));
 
     if (v8::MicrotasksScope::GetCurrentDepth(isolate) >= kMaxRecursionDepth)
         return throwStackOverflowExceptionIfNeeded(isolate);
 
     RELEASE_ASSERT(!context->isIteratingOverObservers());
 
+    InspectorInstrumentation::willExecuteScript(

[pfeldman, 2016/08/15 17:59:55]

Here and below: you can pass |context| here, it'll resolve to the instrumenting
agent within frame or worker.

[panicker, 2016/08/15 20:48:55]

Done.

+        context->isDocument() ? toDocument(context)->frame() : nullptr);
+
     // Run the script and keep track of the current recursion depth.
     v8::MaybeLocal<v8::Value> result;
     {
         if (ScriptForbiddenScope::isScriptForbidden()) {
             throwScriptForbiddenException(isolate);
             return v8::MaybeLocal<v8::Value>();

[pfeldman, 2016/08/15 17:59:55]

This will break your will* and did* apart, lets place them next to the
ThreadDebugger:: ones below.

[panicker, 2016/08/15 20:48:55]

Done.

         }
         v8::MicrotasksScope microtasksScope(isolate, v8::MicrotasksScope::kRunMicrotasks);
         ThreadDebugger::willExecuteScript(isolate, script->GetUnboundScript()->GetId());
         result = script->Run(isolate->GetCurrentContext());
         ThreadDebugger::didExecuteScript(isolate);
     }
 
+    InspectorInstrumentation::didExecuteScript(
+        context->isDocument() ? toDocument(context)->frame() : nullptr);
     crashIfIsolateIsDead(isolate);
     return result;
 }
 
 v8::MaybeLocal<v8::Value> V8ScriptRunner::compileAndRunInternalScript(v8::Local<v8::String> source, v8::Isolate* isolate, const String& fileName, const TextPosition& scriptStartPosition)
 {
     v8::Local<v8::Script> script;
     if (!V8ScriptRunner::compileScript(source, fileName, String(), scriptStartPosition, isolate, nullptr, nullptr, nullptr, SharableCrossOrigin, V8CacheOptionsDefault).ToLocal(&script))
         return v8::MaybeLocal<v8::Value>();
 
@@ skipping 66 matching lines @@
         return v8::MaybeLocal<v8::Value>(throwStackOverflowExceptionIfNeeded(isolate));
 
     RELEASE_ASSERT(!context->isIteratingOverObservers());
 
     if (ScriptForbiddenScope::isScriptForbidden()) {
         throwScriptForbiddenException(isolate);
         return v8::MaybeLocal<v8::Value>();
     }
     if (!depth)
         TRACE_EVENT_BEGIN1("devtools.timeline", "FunctionCall", "data", InspectorFunctionCallEvent::data(context, function));
+    InspectorInstrumentation::willExecuteScript(
+        context->isDocument() ? toDocument(context)->frame() : nullptr);
+
     v8::MaybeLocal<v8::Value> result;
     {
         // Create an extra block so FunctionCall trace event end phase is recorded after
         // v8::MicrotasksScope destructor, as the latter is running microtasks.
         v8::MicrotasksScope microtasksScope(isolate, v8::MicrotasksScope::kRunMicrotasks);
         ThreadDebugger::willExecuteScript(isolate, function->ScriptId());
         result = function->Call(isolate->GetCurrentContext(), receiver, argc, args);
         crashIfIsolateIsDead(isolate);
         ThreadDebugger::didExecuteScript(isolate);
     }
+    InspectorInstrumentation::didExecuteScript(
+        context->isDocument() ? toDocument(context)->frame() : nullptr);
     if (!depth)
         TRACE_EVENT_END0("devtools.timeline", "FunctionCall");
     return result;
 }
 
 v8::MaybeLocal<v8::Value> V8ScriptRunner::callInternalFunction(v8::Local<v8::Function> function, v8::Local<v8::Value> receiver, int argc, v8::Local<v8::Value> args[], v8::Isolate* isolate)
 {
     TRACE_EVENT0("v8", "v8.callFunction");
     TRACE_EVENT_SCOPED_SAMPLING_STATE("v8", "V8Execution");
     v8::MicrotasksScope microtasksScope(isolate, v8::MicrotasksScope::kDoNotRunMicrotasks);
@@ skipping 51 matching lines @@
 // Store a timestamp to the cache as hint.
 void V8ScriptRunner::setCacheTimeStamp(CachedMetadataHandler* cacheHandler)
 {
     double now = WTF::currentTime();
     unsigned tag = cacheTag(CacheTagTimeStamp, cacheHandler);
     cacheHandler->clearCachedMetadata(CachedMetadataHandler::CacheLocally);
     cacheHandler->setCachedMetadata(tag, reinterpret_cast<char*>(&now), sizeof(now), CachedMetadataHandler::SendToPlatform);
 }
 
 } // namespace blink