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#ifndef NET_DISK_CACHE_SIMPLE_SIMPLE_HISTOGRAM_MACROS_H_
6#define NET_DISK_CACHE_SIMPLE_SIMPLE_HISTOGRAM_MACROS_H_
7
8#include "base/metrics/histogram.h"
9#include "base/metrics/sparse_histogram.h"
10#include "net/base/cache_type.h"
11
12// This file contains macros used to report histograms. The main issue is that
13// we want to have separate histograms for each type of cache (app, http, and
14// media), while making it easy to report histograms and have all names
15// precomputed.
16
17#define SIMPLE_CACHE_THUNK(uma_type, args) UMA_HISTOGRAM_##uma_type args
18
19// TODO(pasko): add histograms for shader cache as soon as it becomes possible
20// for a user to get shader cache with the |SimpleBackendImpl| without altering
21// any flags.
22#define SIMPLE_CACHE_UMA(uma_type, uma_name, cache_type, ...)          \
23  do {                                                                 \
24    switch (cache_type) {                                              \
25      case net::DISK_CACHE:                                            \
26        SIMPLE_CACHE_THUNK(                                            \
27            uma_type, ("SimpleCache.Http." uma_name, ##__VA_ARGS__));  \
28        break;                                                         \
29      case net::APP_CACHE:                                             \
30        SIMPLE_CACHE_THUNK(                                            \
31            uma_type, ("SimpleCache.App." uma_name, ##__VA_ARGS__));   \
32        break;                                                         \
33      case net::MEDIA_CACHE:                                           \
34        SIMPLE_CACHE_THUNK(                                            \
35            uma_type, ("SimpleCache.Media." uma_name, ##__VA_ARGS__)); \
36        break;                                                         \
37      case net::SHADER_CACHE:                                          \
38        break;                                                         \
39      default:                                                         \
40        NOTREACHED();                                                  \
41        break;                                                         \
42    }                                                                  \
43  } while (0)
44
45#endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_HISTOGRAM_MACROS_H_
46