59d4fc10b2
Convert both the implementation and clients in the browser and child process for the content.mojom.ChildHistogramFetcherFactory and the content.mojo.ChildHistogramFetcher interfaces to the new Mojo types. Bug: 955171 Change-Id: I3e45219b9c027eb861507f7db9f0cac128eef5bd Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1798357 Reviewed-by: Oksana Zhuravlova <oksamyt@chromium.org> Reviewed-by: Kinuko Yasuda <kinuko@chromium.org> Commit-Queue: Mario Sanchez Prada <mario@igalia.com> Cr-Commit-Position: refs/heads/master@{#695955}
112 lines
3.9 KiB
C++
112 lines
3.9 KiB
C++
// Copyright (c) 2012 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 CONTENT_BROWSER_HISTOGRAM_CONTROLLER_H_
|
|
#define CONTENT_BROWSER_HISTOGRAM_CONTROLLER_H_
|
|
|
|
#include <map>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "base/macros.h"
|
|
#include "base/memory/singleton.h"
|
|
#include "base/memory/writable_shared_memory_region.h"
|
|
#include "content/common/histogram_fetcher.mojom.h"
|
|
#include "mojo/public/cpp/bindings/remote.h"
|
|
|
|
namespace content {
|
|
|
|
class HistogramSubscriber;
|
|
class ChildProcessHost;
|
|
class RenderProcessHost;
|
|
|
|
// HistogramController is used on the browser process to collect histogram data.
|
|
// Only the browser UI thread is allowed to interact with the
|
|
// HistogramController object.
|
|
class HistogramController {
|
|
public:
|
|
// Returns the HistogramController object for the current process, or NULL if
|
|
// none.
|
|
static HistogramController* GetInstance();
|
|
|
|
// Normally instantiated when the child process is launched. Only one instance
|
|
// should be created per process.
|
|
HistogramController();
|
|
virtual ~HistogramController();
|
|
|
|
// Register the subscriber so that it will be called when for example
|
|
// OnHistogramDataCollected is returning histogram data from a child process.
|
|
// This is called on UI thread.
|
|
void Register(HistogramSubscriber* subscriber);
|
|
|
|
// Unregister the subscriber so that it will not be called when for example
|
|
// OnHistogramDataCollected is returning histogram data from a child process.
|
|
// Safe to call even if caller is not the current subscriber.
|
|
void Unregister(const HistogramSubscriber* subscriber);
|
|
|
|
// Contact all processes and get their histogram data.
|
|
void GetHistogramData(int sequence_number);
|
|
|
|
// Notify the |subscriber_| that it should expect at least |pending_processes|
|
|
// additional calls to OnHistogramDataCollected(). OnPendingProcess() may be
|
|
// called repeatedly; the last call will have |end| set to true, indicating
|
|
// that there is no longer a possibility for the count of pending processes to
|
|
// increase. This is called on the UI thread.
|
|
void OnPendingProcesses(int sequence_number, int pending_processes, bool end);
|
|
|
|
// Send the |histogram| back to the |subscriber_|.
|
|
// This can be called from any thread.
|
|
void OnHistogramDataCollected(
|
|
int sequence_number,
|
|
const std::vector<std::string>& pickled_histograms);
|
|
|
|
template <class T>
|
|
void SetHistogramMemory(T*, base::WritableSharedMemoryRegion);
|
|
|
|
// Some hosts can be re-used before Mojo recognizes that their connections
|
|
// are invalid because the previous child process died.
|
|
template <class T>
|
|
void NotifyChildDied(T*);
|
|
|
|
private:
|
|
friend struct base::LeakySingletonTraits<HistogramController>;
|
|
|
|
// Contact PLUGIN and GPU child processes and get their histogram data.
|
|
// TODO(rtenneti): Enable getting histogram data for other processes like
|
|
// PPAPI and NACL.
|
|
void GetHistogramDataFromChildProcesses(int sequence_number);
|
|
|
|
HistogramSubscriber* subscriber_;
|
|
|
|
template <class T>
|
|
using ChildHistogramFetcherMap =
|
|
std::map<T*, mojo::Remote<content::mojom::ChildHistogramFetcher>>;
|
|
|
|
template <class T>
|
|
void InsertChildHistogramFetcherInterface(
|
|
T* host,
|
|
mojo::Remote<content::mojom::ChildHistogramFetcher>
|
|
child_histogram_fetcher);
|
|
|
|
template <class T>
|
|
content::mojom::ChildHistogramFetcher* GetChildHistogramFetcherInterface(
|
|
T* host);
|
|
|
|
template <class T>
|
|
void RemoveChildHistogramFetcherInterface(T* host);
|
|
|
|
// Specialize this template for each ChildHistogramFetcherMap defined below.
|
|
template <class T>
|
|
ChildHistogramFetcherMap<T>& GetChildHistogramFetcherMap();
|
|
|
|
ChildHistogramFetcherMap<RenderProcessHost> renderer_histogram_fetchers_;
|
|
ChildHistogramFetcherMap<ChildProcessHost> child_histogram_fetchers_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(HistogramController);
|
|
};
|
|
|
|
} // namespace content
|
|
|
|
#endif // CONTENT_BROWSER_HISTOGRAM_CONTROLLER_H_
|