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// Copyright 2019 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.
#include "base/profiler/sample_metadata.h"
#include "base/metrics/metrics_hashes.h"
#include "base/no_destructor.h"
#include "base/profiler/stack_sampling_profiler.h"
namespace base {
SampleMetadata::SampleMetadata(StringPiece name)
: name_hash_(HashMetricName(name)) {}
void SampleMetadata::Set(int64_t value) {
GetSampleMetadataRecorder()->Set(name_hash_, nullopt, value);
}
void SampleMetadata::Set(int64_t key, int64_t value) {
GetSampleMetadataRecorder()->Set(name_hash_, key, value);
}
void SampleMetadata::Remove() {
GetSampleMetadataRecorder()->Remove(name_hash_, nullopt);
}
void SampleMetadata::Remove(int64_t key) {
GetSampleMetadataRecorder()->Remove(name_hash_, key);
}
ScopedSampleMetadata::ScopedSampleMetadata(StringPiece name, int64_t value)
: name_hash_(HashMetricName(name)) {
GetSampleMetadataRecorder()->Set(name_hash_, nullopt, value);
}
ScopedSampleMetadata::ScopedSampleMetadata(StringPiece name,
int64_t key,
int64_t value)
: name_hash_(HashMetricName(name)), key_(key) {
GetSampleMetadataRecorder()->Set(name_hash_, key, value);
}
ScopedSampleMetadata::~ScopedSampleMetadata() {
GetSampleMetadataRecorder()->Remove(name_hash_, key_);
}
// This function is friended by StackSamplingProfiler so must live directly in
// the base namespace.
void ApplyMetadataToPastSamplesImpl(TimeTicks period_start,
TimeTicks period_end,
int64_t name_hash,
Optional<int64_t> key,
int64_t value) {
StackSamplingProfiler::ApplyMetadataToPastSamples(period_start, period_end,
name_hash, key, value);
}
void ApplyMetadataToPastSamples(TimeTicks period_start,
TimeTicks period_end,
StringPiece name,
int64_t value) {
return ApplyMetadataToPastSamplesImpl(period_start, period_end,
HashMetricName(name), nullopt, value);
}
void ApplyMetadataToPastSamples(TimeTicks period_start,
TimeTicks period_end,
StringPiece name,
int64_t key,
int64_t value) {
return ApplyMetadataToPastSamplesImpl(period_start, period_end,
HashMetricName(name), key, value);
}
MetadataRecorder* GetSampleMetadataRecorder() {
static NoDestructor<MetadataRecorder> instance;
return instance.get();
}
} // namespace base
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