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#define SIMPLE_CACHE_UMA(uma_type, uma_name, cache_type, ...)          \
20  do {                                                                 \
21    switch (cache_type) {                                              \
22      case net::DISK_CACHE:                                            \
23        SIMPLE_CACHE_THUNK(                                            \
24            uma_type, ("SimpleCache.Http." uma_name, ##__VA_ARGS__));  \
25        break;                                                         \
26      case net::APP_CACHE:                                             \
27        SIMPLE_CACHE_THUNK(                                            \
28            uma_type, ("SimpleCache.App." uma_name, ##__VA_ARGS__));   \
29        break;                                                         \
30      case net::MEDIA_CACHE:                                           \
31        SIMPLE_CACHE_THUNK(                                            \
32            uma_type, ("SimpleCache.Media." uma_name, ##__VA_ARGS__)); \
33        break;                                                         \
34      default:                                                         \
35        NOTREACHED();                                                  \
36        break;                                                         \
37    }                                                                  \
38  } while (0)
39
40#endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_HISTOGRAM_MACROS_H_
41