Introduce a CompilerDispatcherTracer and track how long jobs take

src/isolate.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <memory>
 #include <queue>
 
@@ skipping 27 matching lines @@
 class Bootstrapper;
 class CancelableTaskManager;
 class CallInterfaceDescriptorData;
 class CodeAgingHelper;
 class CodeEventDispatcher;
 class CodeGenerator;
 class CodeRange;
 class CodeStubDescriptor;
 class CodeTracer;
 class CompilationCache;
+class CompilerDispatcherTracer;
 class CompilationStatistics;
 class ContextSlotCache;
 class Counters;
 class CpuFeatures;
 class CpuProfiler;
 class DeoptimizerData;
 class DescriptorLookupCache;
 class Deserializer;
 class EmptyStatement;
 class ExternalCallbackScope;
@@ skipping 1094 matching lines @@
   FutexWaitListNode* futex_wait_list_node() { return &futex_wait_list_node_; }
 
   CancelableTaskManager* cancelable_task_manager() {
     return cancelable_task_manager_;
   }
 
   interpreter::Interpreter* interpreter() const { return interpreter_; }
 
   AccountingAllocator* allocator() { return allocator_; }
 
+  CompilerDispatcherTracer* compiler_dispatcher_tracer() const {
+    return compiler_dispatcher_tracer_;
+  }
+
   bool IsInAnyContext(Object* object, uint32_t index);
 
   void SetRAILMode(RAILMode rail_mode);
 
   void IsolateInForegroundNotification();
 
   void IsolateInBackgroundNotification();
 
   bool IsIsolateInBackground() { return is_isolate_in_background_; }
 
@@ skipping 207 matching lines @@
 #endif
 
   Debug* debug_;
   CpuProfiler* cpu_profiler_;
   HeapProfiler* heap_profiler_;
   std::unique_ptr<CodeEventDispatcher> code_event_dispatcher_;
   FunctionEntryHook function_entry_hook_;
 
   interpreter::Interpreter* interpreter_;
 
+  CompilerDispatcherTracer* compiler_dispatcher_tracer_;
+
   typedef std::pair<InterruptCallback, void*> InterruptEntry;
   std::queue<InterruptEntry> api_interrupts_queue_;
 
 #define GLOBAL_BACKING_STORE(type, name, initialvalue)                         \
   type name##_;
   ISOLATE_INIT_LIST(GLOBAL_BACKING_STORE)
 #undef GLOBAL_BACKING_STORE
 
 #define GLOBAL_ARRAY_BACKING_STORE(type, name, length)                         \
   type name##_[length];
@@ skipping 283 matching lines @@
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ISOLATE_H_