[turbofan] split compilation stats off from HStatistics and track high water marks

src/compilation-statistics.cc

Index: src/compilation-statistics.cc
diff --git a/src/compilation-statistics.cc b/src/compilation-statistics.cc
new file mode 100644
index 0000000000000000000000000000000000000000..056fd62466e9f255fdd016a92db4572df1f75173
--- /dev/null
+++ b/src/compilation-statistics.cc
@@ -0,0 +1,140 @@
+// 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 <iostream>  // NOLINT(readability/streams)
+#include <vector>
+
+#include "src/base/platform/platform.h"
+#include "src/compilation-statistics.h"
+
+namespace v8 {
+namespace internal {
+
+void CompilationStatistics::RecordPhaseStats(const char* phase_kind_name,
+                                             const char* phase_name,
+                                             const BasicStats& stats) {
+  std::string phase_name_str(phase_name);
+  auto it = phase_map_.find(phase_name_str);
+  if (it == phase_map_.end()) {
+    PhaseStats phase_stats(phase_map_.size(), phase_kind_name);
+    it = phase_map_.insert(std::make_pair(phase_name_str, phase_stats)).first;
+  }
+  it->second.Accumulate(stats);
+}
+
+
+void CompilationStatistics::RecordPhaseKindStats(const char* phase_kind_name,
+                                                 const BasicStats& stats) {
+  std::string phase_kind_name_str(phase_kind_name);
+  auto it = phase_kind_map_.find(phase_kind_name_str);
+  if (it == phase_kind_map_.end()) {
+    PhaseKindStats phase_kind_stats(phase_kind_map_.size());
+    it = phase_kind_map_.insert(std::make_pair(phase_kind_name_str,
+                                               phase_kind_stats)).first;
+  }
+  it->second.Accumulate(stats);
+}
+
+
+void CompilationStatistics::RecordTotalStats(size_t source_size,
+                                             const BasicStats& stats) {
+  source_size += source_size;
+  total_stats_.Accumulate(stats);
+}
+
+
+void CompilationStatistics::BasicStats::Accumulate(const BasicStats& stats) {
+  delta_ += stats.delta_;
+  total_allocated_bytes_ += stats.total_allocated_bytes_;
+  if (stats.max_allocated_bytes_ > max_allocated_bytes_) {
+    max_allocated_bytes_ = stats.max_allocated_bytes_;
+    function_name_ = stats.function_name_;
+  }
+}
+
+
+static void WriteLine(std::ostream& os, const char* name,
+                      const CompilationStatistics::BasicStats& stats,
+                      const CompilationStatistics::BasicStats& total_stats) {
+  const size_t kBufferSize = 128;
+  char buffer[kBufferSize];
+
+  double ms = stats.delta_.InMillisecondsF();
+  double percent = stats.delta_.PercentOf(total_stats.delta_);
+  double size_percent =
+      static_cast<double>(stats.total_allocated_bytes_ * 100) /
+      static_cast<double>(total_stats.total_allocated_bytes_);
+  base::OS::SNPrintF(buffer, kBufferSize,
+                     "%28s %10.3f ms / %5.1f %% %10u total / %5.1f %% %10u max",
+                     name, ms, percent, stats.total_allocated_bytes_,
+                     size_percent, stats.max_allocated_bytes_);
+
+  os << buffer;
+  if (stats.function_name_.size() > 0) {
+    os << " : " << stats.function_name_.c_str();
+  }
+  os << std::endl;
+}
+
+
+static void WriteFullLine(std::ostream& os) {
+  os << "-----------------------------------------------"
+        "-----------------------------------------------\n";
+}
+
+
+static void WriteHeader(std::ostream& os) {
+  WriteFullLine(os);
+  os << "                             Turbofan timing results:\n";
+  WriteFullLine(os);
+}
+
+
+static void WritePhaseKindBreak(std::ostream& os) {
+  os << "                             ------------------"
+        "-----------------------------------------------\n";
+}
+
+
+std::ostream& operator<<(std::ostream& os, const CompilationStatistics& s) {
+  // phase_kind_map_ and phase_map_ don't get mutated, so store a bunch of
+  // pointers into them.
+
+  typedef std::vector<CompilationStatistics::PhaseKindMap::const_iterator>
+      SortedPhaseKinds;
+  SortedPhaseKinds sorted_phase_kinds(s.phase_kind_map_.size());
+  for (auto it = s.phase_kind_map_.begin(); it != s.phase_kind_map_.end();
+       ++it) {
+    sorted_phase_kinds[it->second.insert_order_] = it;
+  }
+
+  typedef std::vector<CompilationStatistics::PhaseMap::const_iterator>
+      SortedPhases;
+  SortedPhases sorted_phases(s.phase_map_.size());
+  for (auto it = s.phase_map_.begin(); it != s.phase_map_.end(); ++it) {
+    sorted_phases[it->second.insert_order_] = it;
+  }
+
+  WriteHeader(os);
+  for (auto phase_kind_it : sorted_phase_kinds) {
+    const auto& phase_kind_name = phase_kind_it->first;
+    for (auto phase_it : sorted_phases) {
+      const auto& phase_stats = phase_it->second;
+      if (phase_stats.phase_kind_name_ != phase_kind_name) continue;
+      const auto& phase_name = phase_it->first;
+      WriteLine(os, phase_name.c_str(), phase_stats, s.total_stats_);
+    }
+    WritePhaseKindBreak(os);
+    const auto& phase_kind_stats = phase_kind_it->second;
+    WriteLine(os, phase_kind_name.c_str(), phase_kind_stats, s.total_stats_);
+    os << std::endl;
+  }
+  WriteFullLine(os);
+  WriteLine(os, "totals", s.total_stats_, s.total_stats_);
+
+  return os;
+}
+
+}  // namespace internal
+}  // namespace v8