v8::internal::StackFrameIterator Class Reference

#include <frames.h>

Inheritance diagram for v8::internal::StackFrameIterator:

Collaboration diagram for v8::internal::StackFrameIterator:

Public Member Functions
	StackFrameIterator (Isolate *isolate)
	StackFrameIterator (Isolate *isolate, ThreadLocalTop *t)
StackFrame *	frame () const
void	Advance ()

Private Member Functions
void	Reset (ThreadLocalTop *top)
	DISALLOW_COPY_AND_ASSIGN (StackFrameIterator)

Detailed Description

Definition at line 835 of file frames.h.

Constructor & Destructor Documentation

StackFrameIterator() [1/2]

v8::internal::StackFrameIterator::StackFrameIterator ( Isolate *  isolate )

explicit

Definition at line 66 of file frames.cc.

    : StackFrameIteratorBase(isolate, true) {
  Reset(isolate->thread_local_top());
}

References Reset(), and v8::internal::Isolate::thread_local_top().

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StackFrameIterator() [2/2]

v8::internal::StackFrameIterator::StackFrameIterator	(	Isolate *	isolate,
		ThreadLocalTop *	t
	)

Definition at line 72 of file frames.cc.

    : StackFrameIteratorBase(isolate, true) {
  Reset(t);
}

References Reset().

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Member Function Documentation

Advance()

void v8::internal::StackFrameIterator::Advance

(

)

Definition at line 78 of file frames.cc.

                                 {
  DCHECK(!done());
  // Compute the state of the calling frame before restoring
  // callee-saved registers and unwinding handlers. This allows the
  // frame code that computes the caller state to access the top
  // handler and the value of any callee-saved register if needed.
  StackFrame::State state;
  StackFrame::Type type = frame_->GetCallerState(&state);
 
  // Unwind handlers corresponding to the current frame.
  StackHandlerIterator it(frame_, handler_);
  while (!it.done()) it.Advance();
  handler_ = it.handler();
 
  // Advance to the calling frame.
  frame_ = SingletonFor(type, &state);
 
  // When we're done iterating over the stack frames, the handler
  // chain must have been completely unwound.
  DCHECK(!done() || handler_ == NULL);
}

References DCHECK, and NULL.

Referenced by v8::internal::CreateStackMap(), v8::internal::Deoptimizer::DeoptimizeMarkedCodeForContext(), v8::internal::IC::GetSharedFunctionInfo(), v8::internal::Debug::HandleStepIn(), v8::internal::IC::IC(), v8::internal::Isolate::Iterate(), v8::internal::MarkCompactCollector::PrepareThreadForCodeFlushing(), v8::internal::PrintFrames(), v8::internal::MarkCompactCollector::ProcessTopOptimizedFrame(), v8::internal::RUNTIME_FUNCTION(), v8::internal::TraceTopFrame(), and v8::internal::InactiveThreadActivationsChecker::VisitThread().

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DISALLOW_COPY_AND_ASSIGN()

v8::internal::StackFrameIterator::DISALLOW_COPY_AND_ASSIGN ( StackFrameIterator  )

private

frame()

StackFrame* v8::internal::StackFrameIterator::frame ( ) const

inline

Definition at line 842 of file frames.h.

                            {
    DCHECK(!done());
    return frame_;
  }

References DCHECK.

Referenced by v8::internal::ProfilerEventsProcessor::AddCurrentStack(), v8::internal::IC::GetSharedFunctionInfo(), v8::internal::Debug::HandleStepIn(), v8::internal::IC::IC(), v8::internal::PrintFrames(), v8::internal::RUNTIME_FUNCTION(), and v8::internal::TraceTopFrame().

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Reset()

void v8::internal::StackFrameIterator::Reset ( ThreadLocalTop *  top )

private

Definition at line 101 of file frames.cc.

                                                  {
  StackFrame::State state;
  StackFrame::Type type = ExitFrame::GetStateForFramePointer(
      Isolate::c_entry_fp(top), &state);
  handler_ = StackHandler::FromAddress(Isolate::handler(top));
  if (SingletonFor(type) == NULL) return;
  frame_ = SingletonFor(type, &state);
}

References v8::internal::Isolate::c_entry_fp(), v8::internal::ExitFrame::GetStateForFramePointer(), v8::internal::Isolate::handler(), and NULL.

Referenced by StackFrameIterator().

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

• /mnt/V8SourceCode/src/frames.h
• /mnt/V8SourceCode/src/frames.cc