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
10namespace system_logs {
11
12// Reads Chrome memory usage.
13class 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  virtual 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  virtual ~SystemLogsMemoryHandler() {}
30  SysLogsSourceCallback callback_;
31
32  DISALLOW_COPY_AND_ASSIGN(SystemLogsMemoryHandler);
33};
34
35void MemoryDetailsLogSource::Fetch(const SysLogsSourceCallback& callback) {
36  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
37  DCHECK(!callback.is_null());
38
39  scoped_refptr<SystemLogsMemoryHandler>
40      handler(new SystemLogsMemoryHandler(callback));
41  // TODO(jamescook): Maybe we don't need to update histograms here?
42  handler->StartFetch(MemoryDetails::UPDATE_USER_METRICS);
43}
44
45}  // namespace system_logs
46