[turbofan] basic block profiler

src/basic-block-profiler.cc

+// 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 "src/basic-block-profiler.h"
+
+namespace v8 {
+namespace internal {
+
+BasicBlockProfiler::Data::Data(size_t n_blocks)
+    : n_blocks_(n_blocks), block_ids_(n_blocks_, -1), counts_(n_blocks_, 0) {}
+
+
+BasicBlockProfiler::Data::~Data() {}
+
+
+static void InsertIntoString(OStringStream* os, std::string* string) {
+  string->insert(string->begin(), os->c_str(), &os->c_str()[os->size()]);
+}
+
+
+void BasicBlockProfiler::Data::SetCode(OStringStream* os) {
+  InsertIntoString(os, &code_);
+}
+
+
+void BasicBlockProfiler::Data::SetFunctionName(OStringStream* os) {
+  InsertIntoString(os, &function_name_);
+}
+
+
+void BasicBlockProfiler::Data::SetSchedule(OStringStream* os) {
+  InsertIntoString(os, &schedule_);
+}
+
+
+void BasicBlockProfiler::Data::SetBlockId(size_t offset, int block_id) {
+  DCHECK(offset < n_blocks_);
+  block_ids_[offset] = block_id;
+}
+
+
+uint32_t* BasicBlockProfiler::Data::GetCounterAddress(size_t offset) {
+  DCHECK(offset < n_blocks_);
+  return &counts_[offset];
+}
+
+
+void BasicBlockProfiler::Data::ResetCounts() {
+  for (size_t i = 0; i < n_blocks_; ++i) {
+    counts_[i] = 0;
+  }
+}
+
+
+BasicBlockProfiler::BasicBlockProfiler() {}
+
+
+BasicBlockProfiler::Data* BasicBlockProfiler::NewData(size_t n_blocks) {
+  Data* data = new Data(n_blocks);
+  data_list_.push_back(data);
+  return data;
+}
+
+
+BasicBlockProfiler::~BasicBlockProfiler() {
+  for (DataList::iterator i = data_list_.begin(); i != data_list_.end(); ++i) {
+    delete (*i);
+  }
+}
+
+
+void BasicBlockProfiler::ResetCounts() {
+  for (DataList::iterator i = data_list_.begin(); i != data_list_.end(); ++i) {
+    (*i)->ResetCounts();
+  }
+}
+
+
+OStream& operator<<(OStream& os, const BasicBlockProfiler& p) {
+  os << "---- Start Profiling Data ----" << endl;
+  typedef BasicBlockProfiler::DataList::const_iterator iterator;
+  for (iterator i = p.data_list_.begin(); i != p.data_list_.end(); ++i) {
+    os << **i;
+  }
+  os << "---- End Profiling Data ----" << endl;
+  return os;
+}
+
+
+OStream& operator<<(OStream& os, const BasicBlockProfiler::Data& d) {
+  const char* name = "unknown function";
+  if (!d.function_name_.empty()) {
+    name = d.function_name_.c_str();
+  }
+  if (!d.schedule_.empty()) {
+    os << "schedule for " << name << endl;
+    os << d.schedule_.c_str() << endl;
+  }
+  os << "block counts for " << name << ":" << endl;
+  for (size_t i = 0; i < d.n_blocks_; ++i) {
+    os << "block " << d.block_ids_[i] << " : " << d.counts_[i] << endl;
+  }
+  os << endl;
+  if (!d.code_.empty()) {
+    os << d.code_.c_str() << endl;
+  }
+  return os;
+}
+
+}  // namespace internal
+}  // namespace v8