Move dart_debugger into tonic and use it in mojo dart controller

mojo/dart/embedder/dart_debugger.cc

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "mojo/dart/embedder/dart_debugger.h"
-#include "dart/runtime/include/dart_api.h"
-#include "dart/runtime/include/dart_native_api.h"
-#include "dart/runtime/include/dart_tools_api.h"
-
-
-namespace mojo {
-namespace dart {
-
-void DartDebuggerIsolate::MessageLoop() {
-  MonitorLocker ml(&monitor_);
-  // Request notification on isolate messages.  This allows us to
-  // respond to vm service messages while at breakpoint.
-  Dart_SetMessageNotifyCallback(DartDebugger::NotifyIsolate);
-  while (true) {
-    // Handle all available vm service messages, up to a resume
-    // request.
-    bool resume = false;
-    while (!resume && Dart_HasServiceMessages()) {
-      monitor_.Exit();
-      resume = Dart_HandleServiceMessages();
-      monitor_.Enter();
-    }
-    if (resume) {
-      break;
-    }
-    ml.Wait();
-  }
-  Dart_SetMessageNotifyCallback(nullptr);
-}
-
-void DartDebugger::BptResolvedHandler(Dart_IsolateId isolate_id,
-                                      intptr_t bp_id,
-                                      const Dart_CodeLocation& location) {
-  // Nothing to do here. Service event is dispatched to let Observatory know
-  // that a breakpoint was resolved.
-}
-
-void DartDebugger::PausedEventHandler(Dart_IsolateId isolate_id,
-                                      intptr_t bp_id,
-                                      const Dart_CodeLocation& loc) {
-  Dart_EnterScope();
-  intptr_t isolate_index = FindIsolateIndexById(isolate_id);
-  CHECK(isolate_index != -1);
-  (*isolates_)[isolate_index]->MessageLoop();
-  Dart_ExitScope();
-}
-
-void DartDebugger::ExceptionThrownHandler(Dart_IsolateId isolate_id,
-                                          Dart_Handle exception,
-                                          Dart_StackTrace stack_trace) {
-  Dart_EnterScope();
-  intptr_t isolate_index = FindIsolateIndexById(isolate_id);
-  CHECK(isolate_index != -1);
-  (*isolates_)[isolate_index]->MessageLoop();
-  Dart_ExitScope();
-}
-
-void DartDebugger::IsolateEventHandler(Dart_IsolateId isolate_id,
-                                       Dart_IsolateEvent kind) {
-  Dart_EnterScope();
-  if (kind == Dart_IsolateEvent::kCreated) {
-    AddIsolate(isolate_id);
-  } else {
-    intptr_t isolate_index = FindIsolateIndexById(isolate_id);
-    CHECK(isolate_index != -1);
-    if (kind == Dart_IsolateEvent::kInterrupted) {
-      (*isolates_)[isolate_index]->MessageLoop();
-    } else {
-      CHECK(kind == Dart_IsolateEvent::kShutdown);
-      RemoveIsolate(isolate_id);
-    }
-  }
-  Dart_ExitScope();
-}
-
-void DartDebugger::NotifyIsolate(Dart_Isolate isolate) {
-  base::AutoLock al(*lock_);
-  Dart_IsolateId isolate_id = Dart_GetIsolateId(isolate);
-  intptr_t isolate_index = FindIsolateIndexByIdLocked(isolate_id);
-  if (isolate_index >= 0) {
-    (*isolates_)[isolate_index]->Notify();
-  }
-}
-
-void DartDebugger::InitDebugger() {
-  Dart_SetIsolateEventHandler(IsolateEventHandler);
-  Dart_SetPausedEventHandler(PausedEventHandler);
-  Dart_SetBreakpointResolvedHandler(BptResolvedHandler);
-  Dart_SetExceptionThrownHandler(ExceptionThrownHandler);
-  lock_ = new base::Lock();
-  isolates_ = new std::vector<std::unique_ptr<DartDebuggerIsolate>>();
-}
-
-intptr_t DartDebugger::FindIsolateIndexById(Dart_IsolateId id) {
-  base::AutoLock al(*lock_);
-  return FindIsolateIndexByIdLocked(id);
-}
-
-intptr_t DartDebugger::FindIsolateIndexByIdLocked(
-      Dart_IsolateId id) {
-  lock_->AssertAcquired();
-  for (size_t i = 0; i < isolates_->size(); i++) {
-    if ((*isolates_)[i]->id() == id) {
-      return i;
-    }
-  }
-  return -1;
-}
-
-void DartDebugger::AddIsolate(Dart_IsolateId id) {
-  base::AutoLock al(*lock_);
-  CHECK(FindIsolateIndexByIdLocked(id) == -1);
-  std::unique_ptr<DartDebuggerIsolate> debugger_isolate =
-      std::unique_ptr<DartDebuggerIsolate>(new DartDebuggerIsolate(id));
-  isolates_->push_back(std::move(debugger_isolate));
-}
-
-void DartDebugger::RemoveIsolate(Dart_IsolateId id) {
-  base::AutoLock al(*lock_);
-  for (size_t i = 0; i < isolates_->size(); i++) {
-    if (id == (*isolates_)[i]->id()) {
-      isolates_->erase(isolates_->begin() + i);
-      return;
-    }
-  }
-  NOTREACHED();
-}
-
-base::Lock* DartDebugger::lock_ = nullptr;
-std::vector<std::unique_ptr<DartDebuggerIsolate>>* DartDebugger::isolates_ =
-    nullptr;
-
-}  // namespace dart
-}  // namespace mojo