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// Copyright 2016 The Chromium Authors
// 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 <stddef.h>
#include <stdint.h>
#include <atomic>
#include <memory>
// 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 std::atomic_uintptr_t atomic_histogram_pointer; \
function(std::addressof(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, enum_size) \
SK_HISTOGRAM_POINTER_HELPER(skia::HistogramEnumeration, "Skia." name, \
sample, enum_size)
#define SK_HISTOGRAM_EXACT_LINEAR(name, sample, value_max) \
SK_HISTOGRAM_POINTER_HELPER(skia::HistogramExactLinear, "Skia." name, \
sample, value_max)
#define SK_HISTOGRAM_CUSTOM_EXACT_LINEAR(name, sample, value_min, value_max, \
bucket_count) \
SK_HISTOGRAM_POINTER_HELPER(skia::HistogramCustomExactLinear, "Skia." name, \
sample, value_min, value_max, bucket_count)
#define SK_HISTOGRAM_MEMORY_KB(name, sample) \
SK_HISTOGRAM_POINTER_HELPER(skia::HistogramMemoryKB, "Skia." name, sample)
#define SK_HISTOGRAM_CUSTOM_COUNTS(name, sample, min_count, max_count, \
bucket_count) \
SK_HISTOGRAM_POINTER_HELPER(skia::HistogramCustomCounts, "Skia." name, \
sample, min_count, max_count, bucket_count);
#define SK_HISTOGRAM_CUSTOM_MICROSECONDS_TIMES(name, sample_usec, min_usec, \
max_usec, bucket_count) \
SK_HISTOGRAM_POINTER_HELPER(skia::HistogramCustomMicrosecondsTimes, \
"Skia." name, sample_usec, min_usec, max_usec, \
bucket_count);
namespace skia {
void HistogramBoolean(std::atomic_uintptr_t* atomic_histogram_pointer,
const char* name,
bool sample);
void HistogramEnumeration(std::atomic_uintptr_t* atomic_histogram_pointer,
const char* name,
int sample,
int enum_size);
void HistogramExactLinear(std::atomic_uintptr_t* atomic_histogram_pointer,
const char* name,
int sample,
int value_max);
void HistogramCustomExactLinear(std::atomic_uintptr_t* atomic_histogram_pointer,
const char* name,
int sample,
int value_min,
int value_max,
size_t bucket_count);
void HistogramMemoryKB(std::atomic_uintptr_t* atomic_histogram_pointer,
const char* name,
int sample);
void HistogramCustomCounts(std::atomic_uintptr_t* atomic_histogram_pointer,
const char* name,
int sample,
int min_count,
int max_count,
size_t bucket_count);
void HistogramCustomMicrosecondsTimes(
std::atomic_uintptr_t* atomic_histogram_pointer,
const char* name,
int64_t sample_usec,
unsigned min_usec,
unsigned max_usec,
size_t bucket_count);
} // namespace skia
#endif // SKIA_EXT_SKIA_HISTOGRAM_H_
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