src/chrome/browser/feedback/system_logs/log_sources/memory_details_log_source.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/feedback/system_logs/log_sources/memory_details_log_source.h"
   6
   7 #include "chrome/browser/memory_details.h"
   8 #include "content/public/browser/browser_thread.h"
   9
  10 namespace system_logs {
  11
  12 // Reads Chrome memory usage.
  13 class SystemLogsMemoryHandler : public MemoryDetails {
  14  public:
  15   explicit SystemLogsMemoryHandler(const SysLogsSourceCallback& callback)
  16       : callback_(callback) {}
  17
  18   // Sends the data to the callback.
  19   // MemoryDetails override.
  20   void OnDetailsAvailable() override {
  21     DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  22
  23     scoped_ptr<SystemLogsResponse> response(new SystemLogsResponse);
  24     (*response)["mem_usage"] = ToLogString();
  25     callback_.Run(response.get());
  26   }
  27
  28  private:
  29   ~SystemLogsMemoryHandler() override {}
  30   SysLogsSourceCallback callback_;
  31
  32   DISALLOW_COPY_AND_ASSIGN(SystemLogsMemoryHandler);
  33 };
  34
  35 MemoryDetailsLogSource::MemoryDetailsLogSource()
  36     : SystemLogsSource("MemoryDetails") {
  37 }
  38
  39 MemoryDetailsLogSource::~MemoryDetailsLogSource() {
  40 }
  41
  42 void MemoryDetailsLogSource::Fetch(const SysLogsSourceCallback& callback) {
  43   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  44   DCHECK(!callback.is_null());
  45
  46   scoped_refptr<SystemLogsMemoryHandler>
  47       handler(new SystemLogsMemoryHandler(callback));
  48   // TODO(jamescook): Maybe we don't need to update histograms here?
  49   handler->StartFetch(MemoryDetails::UPDATE_USER_METRICS);
  50 }
  51
  52 }  // namespace system_logs