[inspector] implemented blackboxing inside v8

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 062d27e495a341697e99ed4995907e68c844ed51..75cd5e4e4663a8f0e4a01f98504009d6b562da1e 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -9042,13 +9042,6 @@ void debug::PrepareStep(Isolate* v8_isolate, StepAction action) {
   isolate->debug()->PrepareStep(static_cast<i::StepAction>(action));
 }
 
-void debug::ClearStepping(Isolate* v8_isolate) {
-  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
-  ENTER_V8(isolate);
-  // Clear all current stepping setup.
-  isolate->debug()->ClearStepping();
-}
-
 v8::Isolate* debug::Script::GetIsolate() const {
   return reinterpret_cast<v8::Isolate*>(Utils::OpenHandle(this)->GetIsolate());
 }
@@ -9140,6 +9133,17 @@ bool debug::Script::IsWasm() const {
   return Utils::OpenHandle(this)->type() == i::Script::TYPE_WASM;
 }
 
+void debug::Script::BlackboxStateChanged() const {

[dgozman, 2017/01/19 21:49:14]

Why doesn't this get a bool parameter |blackboxed|?

[kozy, 2017/01/20 02:32:36]

After offline discussion we decided to try to introduce least possible new
structures and new fields internally in V8.
Advantages:
- API without any JS allocation,
- blackboxed state logic computation is located inside of V8DebuggerAgentImpl.
Disadvantage:
- two methods in API instead of one.

+  i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
+  i::HandleScope handle_scope(isolate);
+  i::Handle<i::Script> script = Utils::OpenHandle(this);
+  i::SharedFunctionInfo::ScriptIterator iterator(script);
+  for (i::SharedFunctionInfo* info = iterator.Next(); info != nullptr;
+       info = iterator.Next()) {
+    info->set_computed_debug_is_blackboxed(false);
+  }
+}
+
 namespace {
 int GetSmiValue(i::Handle<i::FixedArray> array, int index) {
   return i::Smi::cast(array->get(index))->value();
@@ -9328,6 +9332,24 @@ void debug::SetDebugEventListener(Isolate* v8_isolate,
   isolate->debug()->SetDebugEventListener(listener);
 }
 
+void debug::SetIsBlackboxedCallback(Isolate* v8_isolate,
+                                    IsBlackboxedCallback callback, void* data) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
+  ENTER_V8(isolate);
+  isolate->debug()->SetIsBlackboxedCallback(callback, data);
+}
+
+bool debug::HasUserFrameOnStack(Isolate* v8_isolate) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
+  ENTER_V8(isolate);
+  for (i::StackTraceFrameIterator it(isolate); !it.done(); it.Advance()) {
+    if (!it.is_javascript()) continue;
+    if (!it.javascript_frame()->function()->shared()->DebugIsBlackboxed())
+      return true;
+  }
+  return false;
+}
+
 Local<String> CpuProfileNode::GetFunctionName() const {
   const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
   i::Isolate* isolate = node->isolate();