| // 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_CHILD_CHILD_HISTOGRAM_FETCHER_IMPL_H |
| #define CONTENT_CHILD_CHILD_HISTOGRAM_FETCHER_IMPL_H |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/memory/writable_shared_memory_region.h" |
| #include "content/common/histogram_fetcher.mojom.h" |
| #include "ipc/message_filter.h" |
| #include "mojo/public/cpp/bindings/pending_receiver.h" |
| |
| namespace base { |
| class HistogramDeltaSerialization; |
| } // namespace base |
| |
| namespace content { |
| |
| class ChildHistogramFetcherFactoryImpl |
| : public content::mojom::ChildHistogramFetcherFactory { |
| public: |
| ChildHistogramFetcherFactoryImpl(); |
| ~ChildHistogramFetcherFactoryImpl() override; |
| |
| static void Create( |
| mojo::PendingReceiver<content::mojom::ChildHistogramFetcherFactory>); |
| |
| private: |
| void CreateFetcher( |
| base::WritableSharedMemoryRegion, |
| mojo::PendingReceiver<content::mojom::ChildHistogramFetcher>) override; |
| }; |
| |
| class ChildHistogramFetcherImpl : public content::mojom::ChildHistogramFetcher { |
| public: |
| ChildHistogramFetcherImpl(); |
| ~ChildHistogramFetcherImpl() override; |
| |
| private: |
| typedef std::vector<std::string> HistogramPickledList; |
| |
| // content::mojom::ChildHistogram implementation. |
| using HistogramDataCallback = content::mojom::ChildHistogramFetcher:: |
| GetChildNonPersistentHistogramDataCallback; |
| |
| void GetChildNonPersistentHistogramData( |
| HistogramDataCallback callback) override; |
| |
| // Extract snapshot data and then send it off to the Browser process. |
| // Send only a delta to what we have already sent. |
| void UploadAllHistograms(int64_t sequence_number); |
| |
| // Prepares histogram deltas for transmission. |
| std::unique_ptr<base::HistogramDeltaSerialization> |
| histogram_delta_serialization_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChildHistogramFetcherImpl); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_CHILD_CHILD_HISTOGRAM_FETCHER_IMPL_H |