| // Copyright 2016 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 SKIA_EXT_SKIA_HISTOGRAM_H_ |
| #define SKIA_EXT_SKIA_HISTOGRAM_H_ |
| |
| #include <cstdint> |
| |
| // This file exposes Chrome's histogram functionality to Skia, without bringing |
| // in any Chrome specific headers. To achieve the same level of optimization as |
| // is present in Chrome, we need to use an inlined atomic pointer. This macro |
| // defines a placeholder atomic which will be inlined into the call-site. This |
| // placeholder is passed to the actual histogram logic in Chrome. |
| #define SK_HISTOGRAM_POINTER_HELPER(function, ...) \ |
| do { \ |
| static intptr_t atomic_histogram_pointer = 0; \ |
| function(&atomic_histogram_pointer, __VA_ARGS__); \ |
| } while (0) |
| |
| #define SK_HISTOGRAM_BOOLEAN(name, sample) \ |
| SK_HISTOGRAM_POINTER_HELPER(skia::HistogramBoolean, "Skia." name, sample) |
| |
| #define SK_HISTOGRAM_ENUMERATION(name, sample, boundary_value) \ |
| SK_HISTOGRAM_POINTER_HELPER(skia::HistogramEnumeration, "Skia." name, \ |
| sample, boundary_value) |
| |
| namespace skia { |
| |
| void HistogramBoolean(intptr_t* atomic_histogram_pointer, |
| const char* name, |
| bool sample); |
| void HistogramEnumeration(intptr_t* atomic_histogram_pointer, |
| const char* name, |
| int sample, |
| int boundary_value); |
| |
| } // namespace skia |
| |
| #endif // SKIA_EXT_SKIA_HISTOGRAM_H_ |