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// Copyright 2014 the V8 project 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 <memory>
#include "src/codegen/optimized-compilation-info.h"
#include "src/compiler/pipeline-statistics.h"
#include "src/compiler/zone-stats.h"
#include "src/objects/shared-function-info.h"
#include "src/objects/string.h"
#include "src/tracing/trace-event.h"
namespace v8 {
namespace internal {
namespace compiler {
namespace {
// We log detailed phase information about the pipeline
// in both the v8.turbofan and the v8.wasm categories.
const char kTraceCategory[] = // --
TRACE_DISABLED_BY_DEFAULT("v8.turbofan") "," // --
TRACE_DISABLED_BY_DEFAULT("v8.wasm");
} // namespace
void PipelineStatistics::CommonStats::Begin(
PipelineStatistics* pipeline_stats) {
DCHECK(!scope_);
scope_.reset(new ZoneStats::StatsScope(pipeline_stats->zone_stats_));
timer_.Start();
outer_zone_initial_size_ = pipeline_stats->OuterZoneSize();
allocated_bytes_at_start_ =
outer_zone_initial_size_ -
pipeline_stats->total_stats_.outer_zone_initial_size_ +
pipeline_stats->zone_stats_->GetCurrentAllocatedBytes();
}
void PipelineStatistics::CommonStats::End(
PipelineStatistics* pipeline_stats,
CompilationStatistics::BasicStats* diff) {
DCHECK(scope_);
diff->function_name_ = pipeline_stats->function_name_;
diff->delta_ = timer_.Elapsed();
size_t outer_zone_diff =
pipeline_stats->OuterZoneSize() - outer_zone_initial_size_;
diff->max_allocated_bytes_ = outer_zone_diff + scope_->GetMaxAllocatedBytes();
diff->absolute_max_allocated_bytes_ =
diff->max_allocated_bytes_ + allocated_bytes_at_start_;
diff->total_allocated_bytes_ =
outer_zone_diff + scope_->GetTotalAllocatedBytes();
scope_.reset();
timer_.Stop();
}
PipelineStatistics::PipelineStatistics(OptimizedCompilationInfo* info,
CompilationStatistics* compilation_stats,
ZoneStats* zone_stats)
: outer_zone_(info->zone()),
zone_stats_(zone_stats),
compilation_stats_(compilation_stats),
source_size_(0),
phase_kind_name_(nullptr),
phase_name_(nullptr) {
if (info->has_shared_info()) {
source_size_ = static_cast<size_t>(info->shared_info()->SourceSize());
std::unique_ptr<char[]> name = info->shared_info()->DebugName().ToCString();
function_name_ = name.get();
}
total_stats_.Begin(this);
}
PipelineStatistics::~PipelineStatistics() {
if (InPhaseKind()) EndPhaseKind();
CompilationStatistics::BasicStats diff;
total_stats_.End(this, &diff);
compilation_stats_->RecordTotalStats(source_size_, diff);
}
void PipelineStatistics::BeginPhaseKind(const char* phase_kind_name) {
DCHECK(!InPhase());
if (InPhaseKind()) EndPhaseKind();
TRACE_EVENT_BEGIN0(kTraceCategory, phase_kind_name);
phase_kind_name_ = phase_kind_name;
phase_kind_stats_.Begin(this);
}
void PipelineStatistics::EndPhaseKind() {
DCHECK(!InPhase());
CompilationStatistics::BasicStats diff;
phase_kind_stats_.End(this, &diff);
compilation_stats_->RecordPhaseKindStats(phase_kind_name_, diff);
TRACE_EVENT_END0(kTraceCategory, phase_kind_name_);
}
void PipelineStatistics::BeginPhase(const char* phase_name) {
TRACE_EVENT_BEGIN0(kTraceCategory, phase_name);
DCHECK(InPhaseKind());
phase_name_ = phase_name;
phase_stats_.Begin(this);
}
void PipelineStatistics::EndPhase() {
DCHECK(InPhaseKind());
CompilationStatistics::BasicStats diff;
phase_stats_.End(this, &diff);
compilation_stats_->RecordPhaseStats(phase_kind_name_, phase_name_, diff);
TRACE_EVENT_END0(kTraceCategory, phase_name_);
}
} // namespace compiler
} // namespace internal
} // namespace v8
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