Split profile-generator

src/heap-snapshot-generator.cc

-// Copyright 2012 the V8 project authors. All rights reserved.
+// Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
-#include "profile-generator-inl.h"
+#include "heap-snapshot-generator-inl.h"
 
-#include "global-handles.h"
 #include "heap-profiler.h"

[yurys, 2013/02/21 09:07:44]

It is already included in "heap-snapshot-generator-inl.h"

-#include "scopeinfo.h"
-#include "unicode.h"
-#include "zone-inl.h"
 #include "debug.h"
 
 namespace v8 {
 namespace internal {
 
 
-TokenEnumerator::TokenEnumerator()
-    : token_locations_(4),
-      token_removed_(4) {
-}
-
-
-TokenEnumerator::~TokenEnumerator() {
-  Isolate* isolate = Isolate::Current();
-  for (int i = 0; i < token_locations_.length(); ++i) {
-    if (!token_removed_[i]) {
-      isolate->global_handles()->ClearWeakness(token_locations_[i]);
-      isolate->global_handles()->Destroy(token_locations_[i]);
-    }
-  }
-}
-
-
-int TokenEnumerator::GetTokenId(Object* token) {
-  Isolate* isolate = Isolate::Current();
-  if (token == NULL) return TokenEnumerator::kNoSecurityToken;
-  for (int i = 0; i < token_locations_.length(); ++i) {
-    if (*token_locations_[i] == token && !token_removed_[i]) return i;
-  }
-  Handle<Object> handle = isolate->global_handles()->Create(token);
-  // handle.location() points to a memory cell holding a pointer
-  // to a token object in the V8's heap.
-  isolate->global_handles()->MakeWeak(handle.location(),
-                                      this,
-                                      NULL,
-                                      TokenRemovedCallback);
-  token_locations_.Add(handle.location());
-  token_removed_.Add(false);
-  return token_locations_.length() - 1;
-}
-
-
-void TokenEnumerator::TokenRemovedCallback(v8::Isolate* isolate,
-                                           v8::Persistent<v8::Value> handle,
-                                           void* parameter) {
-  reinterpret_cast<TokenEnumerator*>(parameter)->TokenRemoved(
-      Utils::OpenHandle(*handle).location());
-  handle.Dispose(isolate);
-}
-
-
-void TokenEnumerator::TokenRemoved(Object** token_location) {
-  for (int i = 0; i < token_locations_.length(); ++i) {
-    if (token_locations_[i] == token_location && !token_removed_[i]) {
-      token_removed_[i] = true;
-      return;
-    }
-  }
-}
-
-
-StringsStorage::StringsStorage()
-    : names_(StringsMatch) {
-}
-
-
-StringsStorage::~StringsStorage() {
-  for (HashMap::Entry* p = names_.Start();
-       p != NULL;
-       p = names_.Next(p)) {
-    DeleteArray(reinterpret_cast<const char*>(p->value));
-  }
-}
-
-
-const char* StringsStorage::GetCopy(const char* src) {
-  int len = static_cast<int>(strlen(src));
-  Vector<char> dst = Vector<char>::New(len + 1);
-  OS::StrNCpy(dst, src, len);
-  dst[len] = '\0';
-  uint32_t hash =
-      StringHasher::HashSequentialString(dst.start(), len, HEAP->HashSeed());
-  return AddOrDisposeString(dst.start(), hash);
-}
-
-
-const char* StringsStorage::GetFormatted(const char* format, ...) {
-  va_list args;
-  va_start(args, format);
-  const char* result = GetVFormatted(format, args);
-  va_end(args);
-  return result;
-}
-
-
-const char* StringsStorage::AddOrDisposeString(char* str, uint32_t hash) {
-  HashMap::Entry* cache_entry = names_.Lookup(str, hash, true);
-  if (cache_entry->value == NULL) {
-    // New entry added.
-    cache_entry->value = str;
-  } else {
-    DeleteArray(str);
-  }
-  return reinterpret_cast<const char*>(cache_entry->value);
-}
-
-
-const char* StringsStorage::GetVFormatted(const char* format, va_list args) {
-  Vector<char> str = Vector<char>::New(1024);
-  int len = OS::VSNPrintF(str, format, args);
-  if (len == -1) {
-    DeleteArray(str.start());
-    return format;
-  }
-  uint32_t hash = StringHasher::HashSequentialString(
-      str.start(), len, HEAP->HashSeed());
-  return AddOrDisposeString(str.start(), hash);
-}
-
-
-const char* StringsStorage::GetName(String* name) {
-  if (name->IsString()) {
-    int length = Min(kMaxNameSize, name->length());
-    SmartArrayPointer<char> data =
-        name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL, 0, length);
-    uint32_t hash = StringHasher::HashSequentialString(
-        *data, length, name->GetHeap()->HashSeed());
-    return AddOrDisposeString(data.Detach(), hash);
-  }
-  return "";
-}
-
-
-const char* StringsStorage::GetName(int index) {
-  return GetFormatted("%d", index);
-}
-
-
-size_t StringsStorage::GetUsedMemorySize() const {
-  size_t size = sizeof(*this);
-  size += sizeof(HashMap::Entry) * names_.capacity();
-  for (HashMap::Entry* p = names_.Start(); p != NULL; p = names_.Next(p)) {
-    size += strlen(reinterpret_cast<const char*>(p->value)) + 1;
-  }
-  return size;
-}
-
-const char* const CodeEntry::kEmptyNamePrefix = "";
-
-
-void CodeEntry::CopyData(const CodeEntry& source) {
-  tag_ = source.tag_;
-  name_prefix_ = source.name_prefix_;
-  name_ = source.name_;
-  resource_name_ = source.resource_name_;
-  line_number_ = source.line_number_;
-}
-
-
-uint32_t CodeEntry::GetCallUid() const {
-  uint32_t hash = ComputeIntegerHash(tag_, v8::internal::kZeroHashSeed);
-  if (shared_id_ != 0) {
-    hash ^= ComputeIntegerHash(static_cast<uint32_t>(shared_id_),
-                               v8::internal::kZeroHashSeed);
-  } else {
-    hash ^= ComputeIntegerHash(
-        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(name_prefix_)),
-        v8::internal::kZeroHashSeed);
-    hash ^= ComputeIntegerHash(
-        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(name_)),
-        v8::internal::kZeroHashSeed);
-    hash ^= ComputeIntegerHash(
-        static_cast<uint32_t>(reinterpret_cast<uintptr_t>(resource_name_)),
-        v8::internal::kZeroHashSeed);
-    hash ^= ComputeIntegerHash(line_number_, v8::internal::kZeroHashSeed);
-  }
-  return hash;
-}
-
-
-bool CodeEntry::IsSameAs(CodeEntry* entry) const {
-  return this == entry
-      || (tag_ == entry->tag_
-          && shared_id_ == entry->shared_id_
-          && (shared_id_ != 0
-              || (name_prefix_ == entry->name_prefix_
-                  && name_ == entry->name_
-                  && resource_name_ == entry->resource_name_
-                  && line_number_ == entry->line_number_)));
-}
-
-
-ProfileNode* ProfileNode::FindChild(CodeEntry* entry) {
-  HashMap::Entry* map_entry =
-      children_.Lookup(entry, CodeEntryHash(entry), false);
-  return map_entry != NULL ?
-      reinterpret_cast<ProfileNode*>(map_entry->value) : NULL;
-}
-
-
-ProfileNode* ProfileNode::FindOrAddChild(CodeEntry* entry) {
-  HashMap::Entry* map_entry =
-      children_.Lookup(entry, CodeEntryHash(entry), true);
-  if (map_entry->value == NULL) {
-    // New node added.
-    ProfileNode* new_node = new ProfileNode(tree_, entry);
-    map_entry->value = new_node;
-    children_list_.Add(new_node);
-  }
-  return reinterpret_cast<ProfileNode*>(map_entry->value);
-}
-
-
-double ProfileNode::GetSelfMillis() const {
-  return tree_->TicksToMillis(self_ticks_);
-}
-
-
-double ProfileNode::GetTotalMillis() const {
-  return tree_->TicksToMillis(total_ticks_);
-}
-
-
-void ProfileNode::Print(int indent) {
-  OS::Print("%5u %5u %*c %s%s [%d]",
-            total_ticks_, self_ticks_,
-            indent, ' ',
-            entry_->name_prefix(),
-            entry_->name(),
-            entry_->security_token_id());
-  if (entry_->resource_name()[0] != '\0')
-    OS::Print(" %s:%d", entry_->resource_name(), entry_->line_number());
-  OS::Print("\n");
-  for (HashMap::Entry* p = children_.Start();
-       p != NULL;
-       p = children_.Next(p)) {
-    reinterpret_cast<ProfileNode*>(p->value)->Print(indent + 2);
-  }
-}
-
-
-class DeleteNodesCallback {
- public:
-  void BeforeTraversingChild(ProfileNode*, ProfileNode*) { }
-
-  void AfterAllChildrenTraversed(ProfileNode* node) {
-    delete node;
-  }
-
-  void AfterChildTraversed(ProfileNode*, ProfileNode*) { }
-};
-
-
-ProfileTree::ProfileTree()
-    : root_entry_(Logger::FUNCTION_TAG,
-                  "",
-                  "(root)",
-                  "",
-                  0,
-                  TokenEnumerator::kNoSecurityToken),
-      root_(new ProfileNode(this, &root_entry_)) {
-}
-
-
-ProfileTree::~ProfileTree() {
-  DeleteNodesCallback cb;
-  TraverseDepthFirst(&cb);
-}
-
-
-void ProfileTree::AddPathFromEnd(const Vector<CodeEntry*>& path) {
-  ProfileNode* node = root_;
-  for (CodeEntry** entry = path.start() + path.length() - 1;
-       entry != path.start() - 1;
-       --entry) {
-    if (*entry != NULL) {
-      node = node->FindOrAddChild(*entry);
-    }
-  }
-  node->IncrementSelfTicks();
-}
-
-
-void ProfileTree::AddPathFromStart(const Vector<CodeEntry*>& path) {
-  ProfileNode* node = root_;
-  for (CodeEntry** entry = path.start();
-       entry != path.start() + path.length();
-       ++entry) {
-    if (*entry != NULL) {
-      node = node->FindOrAddChild(*entry);
-    }
-  }
-  node->IncrementSelfTicks();
-}
-
-
-struct NodesPair {
-  NodesPair(ProfileNode* src, ProfileNode* dst)
-      : src(src), dst(dst) { }
-  ProfileNode* src;
-  ProfileNode* dst;
-};
-
-
-class FilteredCloneCallback {
- public:
-  FilteredCloneCallback(ProfileNode* dst_root, int security_token_id)
-      : stack_(10),
-        security_token_id_(security_token_id) {
-    stack_.Add(NodesPair(NULL, dst_root));
-  }
-
-  void BeforeTraversingChild(ProfileNode* parent, ProfileNode* child) {
-    if (IsTokenAcceptable(child->entry()->security_token_id(),
-                          parent->entry()->security_token_id())) {
-      ProfileNode* clone = stack_.last().dst->FindOrAddChild(child->entry());
-      clone->IncreaseSelfTicks(child->self_ticks());
-      stack_.Add(NodesPair(child, clone));
-    } else {
-      // Attribute ticks to parent node.
-      stack_.last().dst->IncreaseSelfTicks(child->self_ticks());
-    }
-  }
-
-  void AfterAllChildrenTraversed(ProfileNode* parent) { }
-
-  void AfterChildTraversed(ProfileNode*, ProfileNode* child) {
-    if (stack_.last().src == child) {
-      stack_.RemoveLast();
-    }
-  }
-
- private:
-  bool IsTokenAcceptable(int token, int parent_token) {
-    if (token == TokenEnumerator::kNoSecurityToken
-        || token == security_token_id_) return true;
-    if (token == TokenEnumerator::kInheritsSecurityToken) {
-      ASSERT(parent_token != TokenEnumerator::kInheritsSecurityToken);
-      return parent_token == TokenEnumerator::kNoSecurityToken
-          || parent_token == security_token_id_;
-    }
-    return false;
-  }
-
-  List<NodesPair> stack_;
-  int security_token_id_;
-};
-
-void ProfileTree::FilteredClone(ProfileTree* src, int security_token_id) {
-  ms_to_ticks_scale_ = src->ms_to_ticks_scale_;
-  FilteredCloneCallback cb(root_, security_token_id);
-  src->TraverseDepthFirst(&cb);
-  CalculateTotalTicks();
-}
-
-
-void ProfileTree::SetTickRatePerMs(double ticks_per_ms) {
-  ms_to_ticks_scale_ = ticks_per_ms > 0 ? 1.0 / ticks_per_ms : 1.0;
-}
-
-
-class Position {
- public:
-  explicit Position(ProfileNode* node)
-      : node(node), child_idx_(0) { }
-  INLINE(ProfileNode* current_child()) {
-    return node->children()->at(child_idx_);
-  }
-  INLINE(bool has_current_child()) {
-    return child_idx_ < node->children()->length();
-  }
-  INLINE(void next_child()) { ++child_idx_; }
-
-  ProfileNode* node;
- private:
-  int child_idx_;
-};
-
-
-// Non-recursive implementation of a depth-first post-order tree traversal.
-template <typename Callback>
-void ProfileTree::TraverseDepthFirst(Callback* callback) {
-  List<Position> stack(10);
-  stack.Add(Position(root_));
-  while (stack.length() > 0) {
-    Position& current = stack.last();
-    if (current.has_current_child()) {
-      callback->BeforeTraversingChild(current.node, current.current_child());
-      stack.Add(Position(current.current_child()));
-    } else {
-      callback->AfterAllChildrenTraversed(current.node);
-      if (stack.length() > 1) {
-        Position& parent = stack[stack.length() - 2];
-        callback->AfterChildTraversed(parent.node, current.node);
-        parent.next_child();
-      }
-      // Remove child from the stack.
-      stack.RemoveLast();
-    }
-  }
-}
-
-
-class CalculateTotalTicksCallback {
- public:
-  void BeforeTraversingChild(ProfileNode*, ProfileNode*) { }
-
-  void AfterAllChildrenTraversed(ProfileNode* node) {
-    node->IncreaseTotalTicks(node->self_ticks());
-  }
-
-  void AfterChildTraversed(ProfileNode* parent, ProfileNode* child) {
-    parent->IncreaseTotalTicks(child->total_ticks());
-  }
-};
-
-
-void ProfileTree::CalculateTotalTicks() {
-  CalculateTotalTicksCallback cb;
-  TraverseDepthFirst(&cb);
-}
-
-
-void ProfileTree::ShortPrint() {
-  OS::Print("root: %u %u %.2fms %.2fms\n",
-            root_->total_ticks(), root_->self_ticks(),
-            root_->GetTotalMillis(), root_->GetSelfMillis());
-}
-
-
-void CpuProfile::AddPath(const Vector<CodeEntry*>& path) {
-  top_down_.AddPathFromEnd(path);
-  bottom_up_.AddPathFromStart(path);
-}
-
-
-void CpuProfile::CalculateTotalTicks() {
-  top_down_.CalculateTotalTicks();
-  bottom_up_.CalculateTotalTicks();
-}
-
-
-void CpuProfile::SetActualSamplingRate(double actual_sampling_rate) {
-  top_down_.SetTickRatePerMs(actual_sampling_rate);
-  bottom_up_.SetTickRatePerMs(actual_sampling_rate);
-}
-
-
-CpuProfile* CpuProfile::FilteredClone(int security_token_id) {
-  ASSERT(security_token_id != TokenEnumerator::kNoSecurityToken);
-  CpuProfile* clone = new CpuProfile(title_, uid_);
-  clone->top_down_.FilteredClone(&top_down_, security_token_id);
-  clone->bottom_up_.FilteredClone(&bottom_up_, security_token_id);
-  return clone;
-}
-
-
-void CpuProfile::ShortPrint() {
-  OS::Print("top down ");
-  top_down_.ShortPrint();
-  OS::Print("bottom up ");
-  bottom_up_.ShortPrint();
-}
-
-
-void CpuProfile::Print() {
-  OS::Print("[Top down]:\n");
-  top_down_.Print();
-  OS::Print("[Bottom up]:\n");
-  bottom_up_.Print();
-}
-
-
-CodeEntry* const CodeMap::kSharedFunctionCodeEntry = NULL;
-const CodeMap::CodeTreeConfig::Key CodeMap::CodeTreeConfig::kNoKey = NULL;
-
-
-void CodeMap::AddCode(Address addr, CodeEntry* entry, unsigned size) {
-  DeleteAllCoveredCode(addr, addr + size);
-  CodeTree::Locator locator;
-  tree_.Insert(addr, &locator);
-  locator.set_value(CodeEntryInfo(entry, size));
-}
-
-
-void CodeMap::DeleteAllCoveredCode(Address start, Address end) {
-  List<Address> to_delete;
-  Address addr = end - 1;
-  while (addr >= start) {
-    CodeTree::Locator locator;
-    if (!tree_.FindGreatestLessThan(addr, &locator)) break;
-    Address start2 = locator.key(), end2 = start2 + locator.value().size;
-    if (start2 < end && start < end2) to_delete.Add(start2);
-    addr = start2 - 1;
-  }
-  for (int i = 0; i < to_delete.length(); ++i) tree_.Remove(to_delete[i]);
-}
-
-
-CodeEntry* CodeMap::FindEntry(Address addr) {
-  CodeTree::Locator locator;
-  if (tree_.FindGreatestLessThan(addr, &locator)) {
-    // locator.key() <= addr. Need to check that addr is within entry.
-    const CodeEntryInfo& entry = locator.value();
-    if (addr < (locator.key() + entry.size))
-      return entry.entry;
-  }
-  return NULL;
-}
-
-
-int CodeMap::GetSharedId(Address addr) {
-  CodeTree::Locator locator;
-  // For shared function entries, 'size' field is used to store their IDs.
-  if (tree_.Find(addr, &locator)) {
-    const CodeEntryInfo& entry = locator.value();
-    ASSERT(entry.entry == kSharedFunctionCodeEntry);
-    return entry.size;
-  } else {
-    tree_.Insert(addr, &locator);
-    int id = next_shared_id_++;
-    locator.set_value(CodeEntryInfo(kSharedFunctionCodeEntry, id));
-    return id;
-  }
-}
-
-
-void CodeMap::MoveCode(Address from, Address to) {
-  if (from == to) return;
-  CodeTree::Locator locator;
-  if (!tree_.Find(from, &locator)) return;
-  CodeEntryInfo entry = locator.value();
-  tree_.Remove(from);
-  AddCode(to, entry.entry, entry.size);
-}
-
-
-void CodeMap::CodeTreePrinter::Call(
-    const Address& key, const CodeMap::CodeEntryInfo& value) {
-  OS::Print("%p %5d %s\n", key, value.size, value.entry->name());
-}
-
-
-void CodeMap::Print() {
-  CodeTreePrinter printer;
-  tree_.ForEach(&printer);
-}
-
-
-CpuProfilesCollection::CpuProfilesCollection()
-    : profiles_uids_(UidsMatch),
-      current_profiles_semaphore_(OS::CreateSemaphore(1)) {
-  // Create list of unabridged profiles.
-  profiles_by_token_.Add(new List<CpuProfile*>());
-}
-
-
-static void DeleteCodeEntry(CodeEntry** entry_ptr) {
-  delete *entry_ptr;
-}
-
-static void DeleteCpuProfile(CpuProfile** profile_ptr) {
-  delete *profile_ptr;
-}
-
-static void DeleteProfilesList(List<CpuProfile*>** list_ptr) {
-  if (*list_ptr != NULL) {
-    (*list_ptr)->Iterate(DeleteCpuProfile);
-    delete *list_ptr;
-  }
-}
-
-CpuProfilesCollection::~CpuProfilesCollection() {
-  delete current_profiles_semaphore_;
-  current_profiles_.Iterate(DeleteCpuProfile);
-  detached_profiles_.Iterate(DeleteCpuProfile);
-  profiles_by_token_.Iterate(DeleteProfilesList);
-  code_entries_.Iterate(DeleteCodeEntry);
-}
-
-
-bool CpuProfilesCollection::StartProfiling(const char* title, unsigned uid) {
-  ASSERT(uid > 0);
-  current_profiles_semaphore_->Wait();
-  if (current_profiles_.length() >= kMaxSimultaneousProfiles) {
-    current_profiles_semaphore_->Signal();
-    return false;
-  }
-  for (int i = 0; i < current_profiles_.length(); ++i) {
-    if (strcmp(current_profiles_[i]->title(), title) == 0) {
-      // Ignore attempts to start profile with the same title.
-      current_profiles_semaphore_->Signal();
-      return false;
-    }
-  }
-  current_profiles_.Add(new CpuProfile(title, uid));
-  current_profiles_semaphore_->Signal();
-  return true;
-}
-
-
-bool CpuProfilesCollection::StartProfiling(String* title, unsigned uid) {
-  return StartProfiling(GetName(title), uid);
-}
-
-
-CpuProfile* CpuProfilesCollection::StopProfiling(int security_token_id,
-                                                 const char* title,
-                                                 double actual_sampling_rate) {
-  const int title_len = StrLength(title);
-  CpuProfile* profile = NULL;
-  current_profiles_semaphore_->Wait();
-  for (int i = current_profiles_.length() - 1; i >= 0; --i) {
-    if (title_len == 0 || strcmp(current_profiles_[i]->title(), title) == 0) {
-      profile = current_profiles_.Remove(i);
-      break;
-    }
-  }
-  current_profiles_semaphore_->Signal();
-
-  if (profile != NULL) {
-    profile->CalculateTotalTicks();
-    profile->SetActualSamplingRate(actual_sampling_rate);
-    List<CpuProfile*>* unabridged_list =
-        profiles_by_token_[TokenToIndex(TokenEnumerator::kNoSecurityToken)];
-    unabridged_list->Add(profile);
-    HashMap::Entry* entry =
-        profiles_uids_.Lookup(reinterpret_cast<void*>(profile->uid()),
-                              static_cast<uint32_t>(profile->uid()),
-                              true);
-    ASSERT(entry->value == NULL);
-    entry->value = reinterpret_cast<void*>(unabridged_list->length() - 1);
-    return GetProfile(security_token_id, profile->uid());
-  }
-  return NULL;
-}
-
-
-CpuProfile* CpuProfilesCollection::GetProfile(int security_token_id,
-                                              unsigned uid) {
-  int index = GetProfileIndex(uid);
-  if (index < 0) return NULL;
-  List<CpuProfile*>* unabridged_list =
-      profiles_by_token_[TokenToIndex(TokenEnumerator::kNoSecurityToken)];
-  if (security_token_id == TokenEnumerator::kNoSecurityToken) {
-    return unabridged_list->at(index);
-  }
-  List<CpuProfile*>* list = GetProfilesList(security_token_id);
-  if (list->at(index) == NULL) {
-    (*list)[index] =
-        unabridged_list->at(index)->FilteredClone(security_token_id);
-  }
-  return list->at(index);
-}
-
-
-int CpuProfilesCollection::GetProfileIndex(unsigned uid) {
-  HashMap::Entry* entry = profiles_uids_.Lookup(reinterpret_cast<void*>(uid),
-                                                static_cast<uint32_t>(uid),
-                                                false);
-  return entry != NULL ?
-      static_cast<int>(reinterpret_cast<intptr_t>(entry->value)) : -1;
-}
-
-
-bool CpuProfilesCollection::IsLastProfile(const char* title) {
-  // Called from VM thread, and only it can mutate the list,
-  // so no locking is needed here.
-  if (current_profiles_.length() != 1) return false;
-  return StrLength(title) == 0
-      || strcmp(current_profiles_[0]->title(), title) == 0;
-}
-
-
-void CpuProfilesCollection::RemoveProfile(CpuProfile* profile) {
-  // Called from VM thread for a completed profile.
-  unsigned uid = profile->uid();
-  int index = GetProfileIndex(uid);
-  if (index < 0) {
-    detached_profiles_.RemoveElement(profile);
-    return;
-  }
-  profiles_uids_.Remove(reinterpret_cast<void*>(uid),
-                        static_cast<uint32_t>(uid));
-  // Decrement all indexes above the deleted one.
-  for (HashMap::Entry* p = profiles_uids_.Start();
-       p != NULL;
-       p = profiles_uids_.Next(p)) {
-    intptr_t p_index = reinterpret_cast<intptr_t>(p->value);
-    if (p_index > index) {
-      p->value = reinterpret_cast<void*>(p_index - 1);
-    }
-  }
-  for (int i = 0; i < profiles_by_token_.length(); ++i) {
-    List<CpuProfile*>* list = profiles_by_token_[i];
-    if (list != NULL && index < list->length()) {
-      // Move all filtered clones into detached_profiles_,
-      // so we can know that they are still in use.
-      CpuProfile* cloned_profile = list->Remove(index);
-      if (cloned_profile != NULL && cloned_profile != profile) {
-        detached_profiles_.Add(cloned_profile);
-      }
-    }
-  }
-}
-
-
-int CpuProfilesCollection::TokenToIndex(int security_token_id) {
-  ASSERT(TokenEnumerator::kNoSecurityToken == -1);
-  return security_token_id + 1;  // kNoSecurityToken -> 0, 0 -> 1, ...
-}
-
-
-List<CpuProfile*>* CpuProfilesCollection::GetProfilesList(
-    int security_token_id) {
-  const int index = TokenToIndex(security_token_id);
-  const int lists_to_add = index - profiles_by_token_.length() + 1;
-  if (lists_to_add > 0) profiles_by_token_.AddBlock(NULL, lists_to_add);
-  List<CpuProfile*>* unabridged_list =
-      profiles_by_token_[TokenToIndex(TokenEnumerator::kNoSecurityToken)];
-  const int current_count = unabridged_list->length();
-  if (profiles_by_token_[index] == NULL) {
-    profiles_by_token_[index] = new List<CpuProfile*>(current_count);
-  }
-  List<CpuProfile*>* list = profiles_by_token_[index];
-  const int profiles_to_add = current_count - list->length();
-  if (profiles_to_add > 0) list->AddBlock(NULL, profiles_to_add);
-  return list;
-}
-
-
-List<CpuProfile*>* CpuProfilesCollection::Profiles(int security_token_id) {
-  List<CpuProfile*>* unabridged_list =
-      profiles_by_token_[TokenToIndex(TokenEnumerator::kNoSecurityToken)];
-  if (security_token_id == TokenEnumerator::kNoSecurityToken) {
-    return unabridged_list;
-  }
-  List<CpuProfile*>* list = GetProfilesList(security_token_id);
-  const int current_count = unabridged_list->length();
-  for (int i = 0; i < current_count; ++i) {
-    if (list->at(i) == NULL) {
-      (*list)[i] = unabridged_list->at(i)->FilteredClone(security_token_id);
-    }
-  }
-  return list;
-}
-
-
-CodeEntry* CpuProfilesCollection::NewCodeEntry(Logger::LogEventsAndTags tag,
-                                               String* name,
-                                               String* resource_name,
-                                               int line_number) {
-  CodeEntry* entry = new CodeEntry(tag,
-                                   CodeEntry::kEmptyNamePrefix,
-                                   GetFunctionName(name),
-                                   GetName(resource_name),
-                                   line_number,
-                                   TokenEnumerator::kNoSecurityToken);
-  code_entries_.Add(entry);
-  return entry;
-}
-
-
-CodeEntry* CpuProfilesCollection::NewCodeEntry(Logger::LogEventsAndTags tag,
-                                               const char* name) {
-  CodeEntry* entry = new CodeEntry(tag,
-                                   CodeEntry::kEmptyNamePrefix,
-                                   GetFunctionName(name),
-                                   "",
-                                   v8::CpuProfileNode::kNoLineNumberInfo,
-                                   TokenEnumerator::kNoSecurityToken);
-  code_entries_.Add(entry);
-  return entry;
-}
-
-
-CodeEntry* CpuProfilesCollection::NewCodeEntry(Logger::LogEventsAndTags tag,
-                                               const char* name_prefix,
-                                               String* name) {
-  CodeEntry* entry = new CodeEntry(tag,
-                                   name_prefix,
-                                   GetName(name),
-                                   "",
-                                   v8::CpuProfileNode::kNoLineNumberInfo,
-                                   TokenEnumerator::kInheritsSecurityToken);
-  code_entries_.Add(entry);
-  return entry;
-}
-
-
-CodeEntry* CpuProfilesCollection::NewCodeEntry(Logger::LogEventsAndTags tag,
-                                               int args_count) {
-  CodeEntry* entry = new CodeEntry(tag,
-                                   "args_count: ",
-                                   GetName(args_count),
-                                   "",
-                                   v8::CpuProfileNode::kNoLineNumberInfo,
-                                   TokenEnumerator::kInheritsSecurityToken);
-  code_entries_.Add(entry);
-  return entry;
-}
-
-
-void CpuProfilesCollection::AddPathToCurrentProfiles(
-    const Vector<CodeEntry*>& path) {
-  // As starting / stopping profiles is rare relatively to this
-  // method, we don't bother minimizing the duration of lock holding,
-  // e.g. copying contents of the list to a local vector.
-  current_profiles_semaphore_->Wait();
-  for (int i = 0; i < current_profiles_.length(); ++i) {
-    current_profiles_[i]->AddPath(path);
-  }
-  current_profiles_semaphore_->Signal();
-}
-
-
-void SampleRateCalculator::Tick() {
-  if (--wall_time_query_countdown_ == 0)
-    UpdateMeasurements(OS::TimeCurrentMillis());
-}
-
-
-void SampleRateCalculator::UpdateMeasurements(double current_time) {
-  if (measurements_count_++ != 0) {
-    const double measured_ticks_per_ms =
-        (kWallTimeQueryIntervalMs * ticks_per_ms_) /
-        (current_time - last_wall_time_);
-    // Update the average value.
-    ticks_per_ms_ +=
-        (measured_ticks_per_ms - ticks_per_ms_) / measurements_count_;
-    // Update the externally accessible result.
-    result_ = static_cast<AtomicWord>(ticks_per_ms_ * kResultScale);
-  }
-  last_wall_time_ = current_time;
-  wall_time_query_countdown_ =
-      static_cast<unsigned>(kWallTimeQueryIntervalMs * ticks_per_ms_);
-}
-
-
-const char* const ProfileGenerator::kAnonymousFunctionName =
-    "(anonymous function)";
-const char* const ProfileGenerator::kProgramEntryName =
-    "(program)";
-const char* const ProfileGenerator::kGarbageCollectorEntryName =
-    "(garbage collector)";
-
-
-ProfileGenerator::ProfileGenerator(CpuProfilesCollection* profiles)
-    : profiles_(profiles),
-      program_entry_(
-          profiles->NewCodeEntry(Logger::FUNCTION_TAG, kProgramEntryName)),
-      gc_entry_(
-          profiles->NewCodeEntry(Logger::BUILTIN_TAG,
-                                 kGarbageCollectorEntryName)) {
-}
-
-
-void ProfileGenerator::RecordTickSample(const TickSample& sample) {
-  // Allocate space for stack frames + pc + function + vm-state.
-  ScopedVector<CodeEntry*> entries(sample.frames_count + 3);
-  // As actual number of decoded code entries may vary, initialize
-  // entries vector with NULL values.
-  CodeEntry** entry = entries.start();
-  memset(entry, 0, entries.length() * sizeof(*entry));
-  if (sample.pc != NULL) {
-    *entry++ = code_map_.FindEntry(sample.pc);
-
-    if (sample.has_external_callback) {
-      // Don't use PC when in external callback code, as it can point
-      // inside callback's code, and we will erroneously report
-      // that a callback calls itself.
-      *(entries.start()) = NULL;
-      *entry++ = code_map_.FindEntry(sample.external_callback);
-    } else if (sample.tos != NULL) {
-      // Find out, if top of stack was pointing inside a JS function
-      // meaning that we have encountered a frameless invocation.
-      *entry = code_map_.FindEntry(sample.tos);
-      if (*entry != NULL && !(*entry)->is_js_function()) {
-        *entry = NULL;
-      }
-      entry++;
-    }
-
-    for (const Address* stack_pos = sample.stack,
-           *stack_end = stack_pos + sample.frames_count;
-         stack_pos != stack_end;
-         ++stack_pos) {
-      *entry++ = code_map_.FindEntry(*stack_pos);
-    }
-  }
-
-  if (FLAG_prof_browser_mode) {
-    bool no_symbolized_entries = true;
-    for (CodeEntry** e = entries.start(); e != entry; ++e) {
-      if (*e != NULL) {
-        no_symbolized_entries = false;
-        break;
-      }
-    }
-    // If no frames were symbolized, put the VM state entry in.
-    if (no_symbolized_entries) {
-      *entry++ = EntryForVMState(sample.state);
-    }
-  }
-
-  profiles_->AddPathToCurrentProfiles(entries);
-}
-
-
 HeapGraphEdge::HeapGraphEdge(Type type, const char* name, int from, int to)
     : type_(type),
       from_index_(from),
       to_index_(to),
       name_(name) {
   ASSERT(type == kContextVariable
       || type == kProperty
       || type == kInternal
       || type == kShortcut);
 }
@@ skipping 2633 matching lines @@
 
 
 void HeapSnapshotJSONSerializer::SortHashMap(
     HashMap* map, List<HashMap::Entry*>* sorted_entries) {
   for (HashMap::Entry* p = map->Start(); p != NULL; p = map->Next(p))
     sorted_entries->Add(p);
   sorted_entries->Sort(SortUsingEntryValue);
 }
 
 } }  // namespace v8::internal