461 lines
18 KiB
C
461 lines
18 KiB
C
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//
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// Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the LICENSE file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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//
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#ifndef SYSTEM_WRAPPERS_INCLUDE_METRICS_H_
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#define SYSTEM_WRAPPERS_INCLUDE_METRICS_H_
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#include <stddef.h>
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#include <atomic>
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#include <map>
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#include <memory>
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#include <string>
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#include "absl/strings/string_view.h"
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#include "rtc_base/checks.h"
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#include "rtc_base/string_utils.h"
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#if defined(RTC_DISABLE_METRICS)
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#define RTC_METRICS_ENABLED 0
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#else
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#define RTC_METRICS_ENABLED 1
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#endif
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namespace webrtc {
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namespace metrics_impl {
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template <typename... Ts>
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void NoOp(const Ts&...) {}
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} // namespace metrics_impl
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} // namespace webrtc
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#if RTC_METRICS_ENABLED
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#define EXPECT_METRIC_EQ(val1, val2) EXPECT_EQ(val1, val2)
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#define EXPECT_METRIC_EQ_WAIT(val1, val2, timeout) \
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EXPECT_EQ_WAIT(val1, val2, timeout)
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#define EXPECT_METRIC_GT(val1, val2) EXPECT_GT(val1, val2)
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#define EXPECT_METRIC_LE(val1, val2) EXPECT_LE(val1, val2)
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#define EXPECT_METRIC_TRUE(conditon) EXPECT_TRUE(conditon)
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#define EXPECT_METRIC_FALSE(conditon) EXPECT_FALSE(conditon)
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#define EXPECT_METRIC_THAT(value, matcher) EXPECT_THAT(value, matcher)
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#else
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#define EXPECT_METRIC_EQ(val1, val2) webrtc::metrics_impl::NoOp(val1, val2)
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#define EXPECT_METRIC_EQ_WAIT(val1, val2, timeout) \
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webrtc::metrics_impl::NoOp(val1, val2, timeout)
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#define EXPECT_METRIC_GT(val1, val2) webrtc::metrics_impl::NoOp(val1, val2)
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#define EXPECT_METRIC_LE(val1, val2) webrtc::metrics_impl::NoOp(val1, val2)
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#define EXPECT_METRIC_TRUE(condition) \
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webrtc::metrics_impl::NoOp(condition || true)
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#define EXPECT_METRIC_FALSE(condition) \
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webrtc::metrics_impl::NoOp(condition && false)
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#define EXPECT_METRIC_THAT(value, matcher) \
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webrtc::metrics_impl::NoOp(value, testing::_)
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#endif
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#if RTC_METRICS_ENABLED
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// Macros for allowing WebRTC clients (e.g. Chrome) to gather and aggregate
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// statistics.
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//
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// Histogram for counters.
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// RTC_HISTOGRAM_COUNTS(name, sample, min, max, bucket_count);
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//
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// Histogram for enumerators.
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// The boundary should be above the max enumerator sample.
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// RTC_HISTOGRAM_ENUMERATION(name, sample, boundary);
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//
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//
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// The macros use the methods HistogramFactoryGetCounts,
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// HistogramFactoryGetEnumeration and HistogramAdd.
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//
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// By default WebRTC provides implementations of the aforementioned methods
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// that can be found in system_wrappers/source/metrics.cc. If clients want to
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// provide a custom version, they will have to:
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//
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// 1. Compile WebRTC defining the preprocessor macro
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// WEBRTC_EXCLUDE_METRICS_DEFAULT (if GN is used this can be achieved
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// by setting the GN arg rtc_exclude_metrics_default to true).
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// 2. Provide implementations of:
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// Histogram* webrtc::metrics::HistogramFactoryGetCounts(
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// absl::string_view name, int sample, int min, int max,
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// int bucket_count);
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// Histogram* webrtc::metrics::HistogramFactoryGetEnumeration(
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// absl::string_view name, int sample, int boundary);
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// void webrtc::metrics::HistogramAdd(
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// Histogram* histogram_pointer, absl::string_view name, int sample);
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//
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// Example usage:
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//
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// RTC_HISTOGRAM_COUNTS("WebRTC.Video.NacksSent", nacks_sent, 1, 100000, 100);
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//
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// enum Types {
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// kTypeX,
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// kTypeY,
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// kBoundary,
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// };
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//
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// RTC_HISTOGRAM_ENUMERATION("WebRTC.Types", kTypeX, kBoundary);
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//
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// NOTE: It is recommended to do the Chromium review for modifications to
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// histograms.xml before new metrics are committed to WebRTC.
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// Macros for adding samples to a named histogram.
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// Histogram for counters (exponentially spaced buckets).
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#define RTC_HISTOGRAM_COUNTS_100(name, sample) \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 100, 50)
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#define RTC_HISTOGRAM_COUNTS_200(name, sample) \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 200, 50)
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#define RTC_HISTOGRAM_COUNTS_500(name, sample) \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 500, 50)
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#define RTC_HISTOGRAM_COUNTS_1000(name, sample) \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 1000, 50)
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#define RTC_HISTOGRAM_COUNTS_10000(name, sample) \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 10000, 50)
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#define RTC_HISTOGRAM_COUNTS_100000(name, sample) \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 100000, 50)
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#define RTC_HISTOGRAM_COUNTS(name, sample, min, max, bucket_count) \
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RTC_HISTOGRAM_COMMON_BLOCK(name, sample, \
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webrtc::metrics::HistogramFactoryGetCounts( \
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name, min, max, bucket_count))
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#define RTC_HISTOGRAM_COUNTS_LINEAR(name, sample, min, max, bucket_count) \
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RTC_HISTOGRAM_COMMON_BLOCK(name, sample, \
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webrtc::metrics::HistogramFactoryGetCountsLinear( \
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name, min, max, bucket_count))
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// Slow metrics: pointer to metric is acquired at each call and is not cached.
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//
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#define RTC_HISTOGRAM_COUNTS_SPARSE_100(name, sample) \
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RTC_HISTOGRAM_COUNTS_SPARSE(name, sample, 1, 100, 50)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_200(name, sample) \
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RTC_HISTOGRAM_COUNTS_SPARSE(name, sample, 1, 200, 50)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_500(name, sample) \
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RTC_HISTOGRAM_COUNTS_SPARSE(name, sample, 1, 500, 50)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_1000(name, sample) \
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RTC_HISTOGRAM_COUNTS_SPARSE(name, sample, 1, 1000, 50)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_10000(name, sample) \
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RTC_HISTOGRAM_COUNTS_SPARSE(name, sample, 1, 10000, 50)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_100000(name, sample) \
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RTC_HISTOGRAM_COUNTS_SPARSE(name, sample, 1, 100000, 50)
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#define RTC_HISTOGRAM_COUNTS_SPARSE(name, sample, min, max, bucket_count) \
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RTC_HISTOGRAM_COMMON_BLOCK_SLOW(name, sample, \
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webrtc::metrics::HistogramFactoryGetCounts( \
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name, min, max, bucket_count))
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// Histogram for percentage (evenly spaced buckets).
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#define RTC_HISTOGRAM_PERCENTAGE_SPARSE(name, sample) \
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RTC_HISTOGRAM_ENUMERATION_SPARSE(name, sample, 101)
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// Histogram for booleans.
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#define RTC_HISTOGRAM_BOOLEAN_SPARSE(name, sample) \
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RTC_HISTOGRAM_ENUMERATION_SPARSE(name, sample, 2)
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// Histogram for enumerators (evenly spaced buckets).
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// `boundary` should be above the max enumerator sample.
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//
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// TODO(qingsi): Refactor the default implementation given by RtcHistogram,
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// which is already sparse, and remove the boundary argument from the macro.
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#define RTC_HISTOGRAM_ENUMERATION_SPARSE(name, sample, boundary) \
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RTC_HISTOGRAM_COMMON_BLOCK_SLOW( \
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name, sample, \
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webrtc::metrics::SparseHistogramFactoryGetEnumeration(name, boundary))
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// Histogram for percentage (evenly spaced buckets).
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#define RTC_HISTOGRAM_PERCENTAGE(name, sample) \
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RTC_HISTOGRAM_ENUMERATION(name, sample, 101)
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// Histogram for booleans.
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#define RTC_HISTOGRAM_BOOLEAN(name, sample) \
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RTC_HISTOGRAM_ENUMERATION(name, sample, 2)
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// Histogram for enumerators (evenly spaced buckets).
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// `boundary` should be above the max enumerator sample.
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#define RTC_HISTOGRAM_ENUMERATION(name, sample, boundary) \
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RTC_HISTOGRAM_COMMON_BLOCK_SLOW( \
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name, sample, \
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webrtc::metrics::HistogramFactoryGetEnumeration(name, boundary))
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// The name of the histogram should not vary.
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#define RTC_HISTOGRAM_COMMON_BLOCK(constant_name, sample, \
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factory_get_invocation) \
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do { \
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static std::atomic<webrtc::metrics::Histogram*> atomic_histogram_pointer( \
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nullptr); \
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webrtc::metrics::Histogram* histogram_pointer = \
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atomic_histogram_pointer.load(std::memory_order_acquire); \
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if (!histogram_pointer) { \
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histogram_pointer = factory_get_invocation; \
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webrtc::metrics::Histogram* null_histogram = nullptr; \
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atomic_histogram_pointer.compare_exchange_strong(null_histogram, \
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histogram_pointer); \
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} \
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if (histogram_pointer) { \
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webrtc::metrics::HistogramAdd(histogram_pointer, sample); \
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} \
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} while (0)
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// The histogram is constructed/found for each call.
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// May be used for histograms with infrequent updates.`
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#define RTC_HISTOGRAM_COMMON_BLOCK_SLOW(name, sample, factory_get_invocation) \
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do { \
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webrtc::metrics::Histogram* histogram_pointer = factory_get_invocation; \
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if (histogram_pointer) { \
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webrtc::metrics::HistogramAdd(histogram_pointer, sample); \
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} \
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} while (0)
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// Helper macros.
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// Macros for calling a histogram with varying name (e.g. when using a metric
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// in different modes such as real-time vs screenshare). Fast, because pointer
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// is cached. `index` should be different for different names. Allowed `index`
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// values are 0, 1, and 2.
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#define RTC_HISTOGRAMS_COUNTS_100(index, name, sample) \
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RTC_HISTOGRAMS_COMMON(index, name, sample, \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 100, 50))
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#define RTC_HISTOGRAMS_COUNTS_200(index, name, sample) \
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RTC_HISTOGRAMS_COMMON(index, name, sample, \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 200, 50))
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#define RTC_HISTOGRAMS_COUNTS_500(index, name, sample) \
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RTC_HISTOGRAMS_COMMON(index, name, sample, \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 500, 50))
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#define RTC_HISTOGRAMS_COUNTS_1000(index, name, sample) \
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RTC_HISTOGRAMS_COMMON(index, name, sample, \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 1000, 50))
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#define RTC_HISTOGRAMS_COUNTS_10000(index, name, sample) \
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RTC_HISTOGRAMS_COMMON(index, name, sample, \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 10000, 50))
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#define RTC_HISTOGRAMS_COUNTS_100000(index, name, sample) \
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RTC_HISTOGRAMS_COMMON(index, name, sample, \
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RTC_HISTOGRAM_COUNTS(name, sample, 1, 100000, 50))
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#define RTC_HISTOGRAMS_ENUMERATION(index, name, sample, boundary) \
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RTC_HISTOGRAMS_COMMON(index, name, sample, \
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RTC_HISTOGRAM_ENUMERATION(name, sample, boundary))
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#define RTC_HISTOGRAMS_PERCENTAGE(index, name, sample) \
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RTC_HISTOGRAMS_COMMON(index, name, sample, \
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RTC_HISTOGRAM_PERCENTAGE(name, sample))
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#define RTC_HISTOGRAMS_COMMON(index, name, sample, macro_invocation) \
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do { \
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switch (index) { \
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case 0: \
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macro_invocation; \
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break; \
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case 1: \
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macro_invocation; \
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break; \
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case 2: \
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macro_invocation; \
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break; \
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default: \
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RTC_DCHECK_NOTREACHED(); \
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} \
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} while (0)
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#else
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////////////////////////////////////////////////////////////////////////////////
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// This section defines no-op alternatives to the metrics macros when
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// RTC_METRICS_ENABLED is defined.
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#define RTC_HISTOGRAM_COUNTS_100(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_200(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_500(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_1000(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_10000(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_100000(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS(name, sample, min, max, bucket_count) \
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webrtc::metrics_impl::NoOp(name, sample, min, max, bucket_count)
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#define RTC_HISTOGRAM_COUNTS_LINEAR(name, sample, min, max, bucket_count) \
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webrtc::metrics_impl::NoOp(name, sample, min, max, bucket_count)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_100(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_200(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_500(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_1000(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
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#define RTC_HISTOGRAM_COUNTS_SPARSE_10000(name, sample) \
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webrtc::metrics_impl::NoOp(name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_COUNTS_SPARSE_100000(name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_COUNTS_SPARSE(name, sample, min, max, bucket_count) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample, min, max, bucket_count)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_PERCENTAGE_SPARSE(name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_BOOLEAN_SPARSE(name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_ENUMERATION_SPARSE(name, sample, boundary) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample, boundary)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_PERCENTAGE(name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_BOOLEAN(name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_ENUMERATION(name, sample, boundary) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample, boundary)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_COMMON_BLOCK(constant_name, sample, \
|
||
|
|
factory_get_invocation) \
|
||
|
|
webrtc::metrics_impl::NoOp(constant_name, sample, factory_get_invocation)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAM_COMMON_BLOCK_SLOW(name, sample, factory_get_invocation) \
|
||
|
|
webrtc::metrics_impl::NoOp(name, sample, factory_get_invocation)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_COUNTS_100(index, name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_COUNTS_200(index, name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_COUNTS_500(index, name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_COUNTS_1000(index, name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_COUNTS_10000(index, name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_COUNTS_100000(index, name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_ENUMERATION(index, name, sample, boundary) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample, boundary)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_PERCENTAGE(index, name, sample) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample)
|
||
|
|
|
||
|
|
#define RTC_HISTOGRAMS_COMMON(index, name, sample, macro_invocation) \
|
||
|
|
webrtc::metrics_impl::NoOp(index, name, sample, macro_invocation)
|
||
|
|
|
||
|
|
#endif // RTC_METRICS_ENABLED
|
||
|
|
|
||
|
|
namespace webrtc {
|
||
|
|
namespace metrics {
|
||
|
|
|
||
|
|
// Time that should have elapsed for stats that are gathered once per call.
|
||
|
|
constexpr int kMinRunTimeInSeconds = 10;
|
||
|
|
|
||
|
|
class Histogram;
|
||
|
|
|
||
|
|
// Functions for getting pointer to histogram (constructs or finds the named
|
||
|
|
// histogram).
|
||
|
|
|
||
|
|
// Get histogram for counters.
|
||
|
|
Histogram* HistogramFactoryGetCounts(absl::string_view name,
|
||
|
|
int min,
|
||
|
|
int max,
|
||
|
|
int bucket_count);
|
||
|
|
|
||
|
|
// Get histogram for counters with linear bucket spacing.
|
||
|
|
Histogram* HistogramFactoryGetCountsLinear(absl::string_view name,
|
||
|
|
int min,
|
||
|
|
int max,
|
||
|
|
int bucket_count);
|
||
|
|
|
||
|
|
// Get histogram for enumerators.
|
||
|
|
// `boundary` should be above the max enumerator sample.
|
||
|
|
Histogram* HistogramFactoryGetEnumeration(absl::string_view name, int boundary);
|
||
|
|
|
||
|
|
// Get sparse histogram for enumerators.
|
||
|
|
// `boundary` should be above the max enumerator sample.
|
||
|
|
Histogram* SparseHistogramFactoryGetEnumeration(absl::string_view name,
|
||
|
|
int boundary);
|
||
|
|
|
||
|
|
// Function for adding a `sample` to a histogram.
|
||
|
|
void HistogramAdd(Histogram* histogram_pointer, int sample);
|
||
|
|
|
||
|
|
struct SampleInfo {
|
||
|
|
SampleInfo(absl::string_view name, int min, int max, size_t bucket_count);
|
||
|
|
~SampleInfo();
|
||
|
|
|
||
|
|
const std::string name;
|
||
|
|
const int min;
|
||
|
|
const int max;
|
||
|
|
const size_t bucket_count;
|
||
|
|
std::map<int, int> samples; // <value, # of events>
|
||
|
|
};
|
||
|
|
|
||
|
|
// Enables collection of samples.
|
||
|
|
// This method should be called before any other call into webrtc.
|
||
|
|
void Enable();
|
||
|
|
|
||
|
|
// Gets histograms and clears all samples.
|
||
|
|
void GetAndReset(
|
||
|
|
std::map<std::string, std::unique_ptr<SampleInfo>, rtc::AbslStringViewCmp>*
|
||
|
|
histograms);
|
||
|
|
|
||
|
|
// Functions below are mainly for testing.
|
||
|
|
|
||
|
|
// Clears all samples.
|
||
|
|
void Reset();
|
||
|
|
|
||
|
|
// Returns the number of times the `sample` has been added to the histogram.
|
||
|
|
int NumEvents(absl::string_view name, int sample);
|
||
|
|
|
||
|
|
// Returns the total number of added samples to the histogram.
|
||
|
|
int NumSamples(absl::string_view name);
|
||
|
|
|
||
|
|
// Returns the minimum sample value (or -1 if the histogram has no samples).
|
||
|
|
int MinSample(absl::string_view name);
|
||
|
|
|
||
|
|
// Returns a map with keys the samples with at least one event and values the
|
||
|
|
// number of events for that sample.
|
||
|
|
std::map<int, int> Samples(absl::string_view name);
|
||
|
|
|
||
|
|
} // namespace metrics
|
||
|
|
} // namespace webrtc
|
||
|
|
|
||
|
|
#endif // SYSTEM_WRAPPERS_INCLUDE_METRICS_H_
|