Module: Vernier::StackTableHelpers

Included in:
ParsedProfile::StackTable, StackTable
Defined in:
lib/vernier/stack_table_helpers.rb

Defined Under Namespace

Classes: BaseType, Frame, Func, Stack

Instance Method Summary collapse

Instance Method Details

#backtrace(stack_idx) ⇒ Object 



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# File 'lib/vernier/stack_table_helpers.rb', line 25

def backtrace(stack_idx)
  last_filename = nil
  last_lineno = nil
  full_stack(stack_idx).reverse.map do |stack_idx|
    frame_idx = stack_frame_idx(stack_idx)
    func_idx = frame_func_idx(frame_idx)
    line = frame_line_no(frame_idx)
    line = last_lineno if line == 0
    last_lineno = line
    name = func_name(func_idx)
    filename = func_path(func_idx)
    filename = last_filename if filename.empty?
    last_filename = filename

    "#{filename}:#{line}:in '#{name}'"
  end.reverse
end

#full_stack(stack_idx) ⇒ Object 



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# File 'lib/vernier/stack_table_helpers.rb', line 43

def full_stack(stack_idx)
  full_stack = []
  while stack_idx
    full_stack << stack_idx
    stack_idx = stack_parent_idx(stack_idx)
  end
  full_stack
end

#inspect ⇒ Object 



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# File 'lib/vernier/stack_table_helpers.rb', line 3

def inspect
  "#<#{self.class.name} #{stack_count} stacks, #{frame_count} frames, #{func_count} funcs>"
end

#stack(idx) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/vernier/stack_table_helpers.rb', line 149

def stack(idx)
  raise ArgumentError, "invalid index" unless idx
  Stack.new(self, idx)
end

#to_h ⇒ Object 



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# File 'lib/vernier/stack_table_helpers.rb', line 7

def to_h
  {
    stack_table: {
      parent: stack_count.times.map { stack_parent_idx(_1) },
      frame:  stack_count.times.map { stack_frame_idx(_1) }
    },
    frame_table: {
      func: frame_count.times.map { frame_func_idx(_1) },
      line:  frame_count.times.map { frame_line_no(_1) }
    },
    func_table: {
      name: func_count.times.map { func_name(_1) },
      filename: func_count.times.map { func_filename(_1) },
      first_line: func_count.times.map { func_first_lineno(_1) }
    }
  }
end