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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_HISTOGRAM_MACROS_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_HISTOGRAM_MACROS_H_
namespace blink {
#define UMA_HISTOGRAM_CUSTOM_EXACT_LINEAR(name, sample, min, max, buckets) \
do { \
static_assert(!std::is_enum_v<std::decay_t<decltype(sample)>>, \
"|sample| should not be an enum type!"); \
static_assert(!std::is_enum_v<std::decay_t<decltype(min)>>, \
"|min| should not be an enum type!"); \
static_assert(!std::is_enum_v<std::decay_t<decltype(max)>>, \
"|max| should not be an enum type!"); \
static_assert(!std::is_enum_v<std::decay_t<decltype(buckets)>>, \
"|buckets| should not be an enum type!"); \
STATIC_HISTOGRAM_POINTER_BLOCK( \
name, Add(sample), \
base::LinearHistogram::FactoryGet( \
name, min, max, buckets, \
base::HistogramBase::kUmaTargetedHistogramFlag)); \
} while (0)
#define STATIC_HISTOGRAM_POINTER_BLOCK(constant_histogram_name, \
histogram_add_method_invocation, \
histogram_factory_get_invocation) \
do { \
static std::atomic_uintptr_t atomic_histogram_pointer; \
HISTOGRAM_POINTER_USE( \
std::addressof(atomic_histogram_pointer), constant_histogram_name, \
histogram_add_method_invocation, histogram_factory_get_invocation); \
} while (0)
#define HISTOGRAM_POINTER_USE( \
atomic_histogram_pointer, constant_histogram_name, \
histogram_add_method_invocation, histogram_factory_get_invocation) \
do { \
base::HistogramBase* histogram_pointer( \
reinterpret_cast<base::HistogramBase*>( \
atomic_histogram_pointer->load(std::memory_order_acquire))); \
if (!histogram_pointer) { \
histogram_pointer = histogram_factory_get_invocation; \
atomic_histogram_pointer->store( \
reinterpret_cast<uintptr_t>(histogram_pointer), \
std::memory_order_release); \
} \
if (DCHECK_IS_ON()) \
histogram_pointer->CheckName(constant_histogram_name); \
histogram_pointer->histogram_add_method_invocation; \
} while (0)
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_HISTOGRAM_MACROS_H_
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