[Memory UMA] Return a memory summary struct with the ack message

base/trace_event/memory_dump_manager.h

 // 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.
 
 #ifndef BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_
 #define BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 96 matching lines @@
       std::unique_ptr<MemoryDumpProvider> mdp);
 
   // Requests a memory dump. The dump might happen or not depending on the
   // filters and categories specified when enabling tracing.
   // The optional |callback| is executed asynchronously, on an arbitrary thread,
   // to notify about the completion of the global dump (i.e. after all the
   // processes have dumped) and its success (true iff all the dumps were
   // successful).
   void RequestGlobalDump(MemoryDumpType dump_type,
                          MemoryDumpLevelOfDetail level_of_detail,
-                         const MemoryDumpCallback& callback);
+                         const GlobalMemoryDumpCallback& callback);
 
   // Same as above (still asynchronous), but without callback.
   void RequestGlobalDump(MemoryDumpType dump_type,
                          MemoryDumpLevelOfDetail level_of_detail);
 
   // TraceLog::EnabledStateObserver implementation.
   void OnTraceLogEnabled() override;
   void OnTraceLogDisabled() override;
 
   // Enable heap profiling if kEnableHeapProfiling is specified.
@@ skipping 45 matching lines @@
 
   // Holds the state of a process memory dump that needs to be carried over
   // across task runners in order to fulfil an asynchronous CreateProcessDump()
   // request. At any time exactly one task runner owns a
   // ProcessMemoryDumpAsyncState.
   struct ProcessMemoryDumpAsyncState {
     ProcessMemoryDumpAsyncState(
         MemoryDumpRequestArgs req_args,
         const MemoryDumpProviderInfo::OrderedSet& dump_providers,
         scoped_refptr<MemoryDumpSessionState> session_state,
-        MemoryDumpCallback callback,
+        ProcessMemoryDumpCallback callback,
         scoped_refptr<SingleThreadTaskRunner> dump_thread_task_runner);
     ~ProcessMemoryDumpAsyncState();
 
     // Gets or creates the memory dump container for the given target process.
     ProcessMemoryDump* GetOrCreateMemoryDumpContainerForProcess(
         ProcessId pid,
         const MemoryDumpArgs& dump_args);
 
     // A map of ProcessId -> ProcessMemoryDump, one for each target process
     // being dumped from the current process. Typically each process dumps only
     // for itself, unless dump providers specify a different |target_process| in
     // MemoryDumpProvider::Options.
     std::map<ProcessId, std::unique_ptr<ProcessMemoryDump>> process_dumps;
 
     // The arguments passed to the initial CreateProcessDump() request.
     const MemoryDumpRequestArgs req_args;
 
     // An ordered sequence of dump providers that have to be invoked to complete
     // the dump. This is a copy of |dump_providers_| at the beginning of a dump
     // and becomes empty at the end, when all dump providers have been invoked.
     std::vector<scoped_refptr<MemoryDumpProviderInfo>> pending_dump_providers;
 
     // The trace-global session state.
     scoped_refptr<MemoryDumpSessionState> session_state;
 
     // Callback passed to the initial call to CreateProcessDump().
-    MemoryDumpCallback callback;
+    ProcessMemoryDumpCallback callback;
 
     // The |success| field that will be passed as argument to the |callback|.
     bool dump_successful;
 
     // The thread on which FinalizeDumpAndAddToTrace() (and hence |callback|)
     // should be invoked. This is the thread on which the initial
     // CreateProcessDump() request was called.
     const scoped_refptr<SingleThreadTaskRunner> callback_task_runner;
 
     // The thread on which unbound dump providers should be invoked.
@@ skipping 16 matching lines @@
   static void SetInstanceForTesting(MemoryDumpManager* instance);
   static uint32_t GetDumpsSumKb(const std::string&, const ProcessMemoryDump*);
   static void FinalizeDumpAndAddToTrace(
       std::unique_ptr<ProcessMemoryDumpAsyncState> pmd_async_state);
 
   // Internal, used only by MemoryDumpManagerDelegate.
   // Creates a memory dump for the current process and appends it to the trace.
   // |callback| will be invoked asynchronously upon completion on the same
   // thread on which CreateProcessDump() was called.
   void CreateProcessDump(const MemoryDumpRequestArgs& args,
-                         const MemoryDumpCallback& callback);
+                         const ProcessMemoryDumpCallback& callback);
 
   // Calls InvokeOnMemoryDump() for the next MDP on the task runner specified by
   // the MDP while registration. On failure to do so, skips and continues to
   // next MDP.
   void SetupNextMemoryDump(
       std::unique_ptr<ProcessMemoryDumpAsyncState> pmd_async_state);
 
   // Invokes OnMemoryDump() of the next MDP and calls SetupNextMemoryDump() at
   // the end to continue the ProcessMemoryDump. Should be called on the MDP task
   // runner.
@@ skipping 68 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(MemoryDumpManager);
 };
 
 // The delegate is supposed to be long lived (read: a Singleton) and thread
 // safe (i.e. should expect calls from any thread and handle thread hopping).
 class BASE_EXPORT MemoryDumpManagerDelegate {
  public:
   MemoryDumpManagerDelegate() {}
   virtual ~MemoryDumpManagerDelegate() {}
 
-  virtual void RequestGlobalMemoryDump(const MemoryDumpRequestArgs& args,
-                                       const MemoryDumpCallback& callback) = 0;
+  virtual void RequestGlobalMemoryDump(
+      const MemoryDumpRequestArgs& args,
+      const GlobalMemoryDumpCallback& callback) = 0;
 
   virtual bool IsCoordinator() const = 0;
 
  protected:
   void CreateProcessDump(const MemoryDumpRequestArgs& args,
-                         const MemoryDumpCallback& callback) {
+                         const ProcessMemoryDumpCallback& callback) {
     MemoryDumpManager::GetInstance()->CreateProcessDump(args, callback);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MemoryDumpManagerDelegate);
 };
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_