dart::CodeSourceMapBuilder Class Reference

#include <code_descriptors.h>

Inheritance diagram for dart::CodeSourceMapBuilder:

Public Member Functions
	CodeSourceMapBuilder (Zone *zone, bool stack_traces_only, const GrowableArray< intptr_t > &caller_inline_id, const GrowableArray< TokenPosition > &inline_id_to_token_pos, const GrowableArray< const Function * > &inline_id_to_function)
void	BeginCodeSourceRange (int32_t pc_offset, const InstructionSource &source)
void	EndCodeSourceRange (int32_t pc_offset, const InstructionSource &source)
void	NoteDescriptor (UntaggedPcDescriptors::Kind kind, int32_t pc_offset, const InstructionSource &source)
void	NoteNullCheck (int32_t pc_offset, const InstructionSource &source, intptr_t name_index)
void	WriteFunctionEntrySourcePosition (const InstructionSource &source)
TokenPosition	RootPosition (const InstructionSource &source)
ArrayPtr	InliningIdToFunction ()
CodeSourceMapPtr	Finalize ()
const GrowableArray< const Function * > &	inline_id_to_function () const
Public Member Functions inherited from dart::ZoneAllocated
	ZoneAllocated ()
void *	operator new (size_t size)
void *	operator new (size_t size, Zone *zone)
void	operator delete (void *pointer)

Static Public Attributes
static const TokenPosition &	kInitialPosition

Detailed Description

Definition at line 231 of file code_descriptors.h.

Constructor & Destructor Documentation

CodeSourceMapBuilder()

dart::CodeSourceMapBuilder::CodeSourceMapBuilder	(	Zone *	zone,
		bool	stack_traces_only,
		const GrowableArray< intptr_t > &	caller_inline_id,
		const GrowableArray< TokenPosition > &	inline_id_to_token_pos,
		const GrowableArray< const Function * > &	inline_id_to_function
	)

Definition at line 291 of file code_descriptors.cc.

    : zone_(zone),
      buffered_pc_offset_(0),
      buffered_inline_id_stack_(),
      buffered_token_pos_stack_(),
      written_pc_offset_(0),
      written_inline_id_stack_(),
      written_token_pos_stack_(),
      caller_inline_id_(caller_inline_id),
      inline_id_to_token_pos_(inline_id_to_token_pos),
      inline_id_to_function_(inline_id_to_function),
      inlined_functions_(
          GrowableObjectArray::Handle(GrowableObjectArray::New(Heap::kOld))),
      script_(Script::Handle(zone, Script::null())),
      stream_(zone, 64),
      stack_traces_only_(stack_traces_only) {
  buffered_inline_id_stack_.Add(0);
  buffered_token_pos_stack_.Add(kInitialPosition);
  written_inline_id_stack_.Add(0);
  written_token_pos_stack_.Add(kInitialPosition);
}

Member Function Documentation

BeginCodeSourceRange()

void dart::CodeSourceMapBuilder::BeginCodeSourceRange	(	int32_t	pc_offset,
		const InstructionSource &	source
	)

Definition at line 430 of file code_descriptors.cc.

                                     {
  StartInliningInterval(pc_offset, source);
}

EndCodeSourceRange()

void dart::CodeSourceMapBuilder::EndCodeSourceRange	(	int32_t	pc_offset,
		const InstructionSource &	source
	)

Definition at line 436 of file code_descriptors.cc.

                                                                               {
  if (pc_offset == buffered_pc_offset_) {
    return;  // Empty intermediate instruction.
  }
  StartInliningInterval(pc_offset, source);
  if (source.token_pos != buffered_token_pos_stack_.Last()) {
    if (!stack_traces_only_) {
      FlushBuffer();
    }
    BufferChangePosition(source.token_pos);
  }
  BufferAdvancePC(pc_offset - buffered_pc_offset_);
}

Finalize()

CodeSourceMapPtr dart::CodeSourceMapBuilder::Finalize

(

)

Definition at line 505 of file code_descriptors.cc.

                                                {
  if (!stack_traces_only_) {
    FlushBuffer();
  }
  intptr_t length = stream_.bytes_written();
  const auto& map = CodeSourceMap::Handle(zone_, CodeSourceMap::New(length));
  NoSafepointScope no_safepoint;
  if (length > 0) {
    ASSERT(stream_.buffer() != nullptr);
    memmove(map.Data(), stream_.buffer(), length);
  }
  return map.ptr();
}

inline_id_to_function()

const GrowableArray< const Function * > & dart::CodeSourceMapBuilder::inline_id_to_function ( ) const

inline

Definition at line 261 of file code_descriptors.h.

                                                                      {
    return inline_id_to_function_;
  }

InliningIdToFunction()

ArrayPtr dart::CodeSourceMapBuilder::InliningIdToFunction

(

)

Definition at line 498 of file code_descriptors.cc.

                                                    {
  if (inlined_functions_.Length() == 0) {
    return Object::empty_array().ptr();
  }
  return Array::MakeFixedLength(inlined_functions_);
}

NoteDescriptor()

void dart::CodeSourceMapBuilder::NoteDescriptor	(	UntaggedPcDescriptors::Kind	kind,
		int32_t	pc_offset,
		const InstructionSource &	source
	)

Definition at line 451 of file code_descriptors.cc.

                                                                           {
  const uint8_t kCanThrow =
      UntaggedPcDescriptors::kIcCall | UntaggedPcDescriptors::kUnoptStaticCall |
      UntaggedPcDescriptors::kRuntimeCall | UntaggedPcDescriptors::kOther;
  if ((kind & kCanThrow) != 0) {
    StartInliningInterval(pc_offset, source);
    BufferChangePosition(source.token_pos);
    BufferAdvancePC(pc_offset - buffered_pc_offset_);
    FlushBuffer();
  }
}

NoteNullCheck()

void dart::CodeSourceMapBuilder::NoteNullCheck	(	int32_t	pc_offset,
		const InstructionSource &	source,
		intptr_t	name_index
	)

Definition at line 465 of file code_descriptors.cc.

                                                              {
  StartInliningInterval(pc_offset, source);
  BufferChangePosition(source.token_pos);
  BufferAdvancePC(pc_offset - buffered_pc_offset_);
  FlushBuffer();
  WriteNullCheck(name_index);
}

RootPosition()

TokenPosition dart::CodeSourceMapBuilder::RootPosition

(

const InstructionSource &

source

)

Definition at line 487 of file code_descriptors.cc.

                                     {
  if (source.inlining_id <= 0) return source.token_pos;
 
  intptr_t id = source.inlining_id;
  while (caller_inline_id_[id] != 0) {
    id = caller_inline_id_[id];
  }
  return inline_id_to_token_pos_[id - 1];
}

WriteFunctionEntrySourcePosition()

void dart::CodeSourceMapBuilder::WriteFunctionEntrySourcePosition

(

const InstructionSource &

source

)

Definition at line 422 of file code_descriptors.cc.

                                     {
  ASSERT(written_pc_offset_ == 0 && buffered_pc_offset_ == 0);
  ASSERT(stream_.bytes_written() == 0);
  WriteChangePosition(source.token_pos);
  WriteAdvancePC(0);
}

Member Data Documentation

kInitialPosition

const TokenPosition & dart::CodeSourceMapBuilder::kInitialPosition

static

Initial value:

=
    TokenPosition::kDartCodePrologue

Definition at line 243 of file code_descriptors.h.

---

The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/code_descriptors.h
• third_party/dart-lang/sdk/runtime/vm/code_descriptors.cc