public void AddStack(SymbolicFrame[] frames, int index = 0)
{
_countAsNode++;
var firstFrame = frames[index];
// search if the frame to add has already been seen
var callstack = Stacks.FirstOrDefault(s => string.CompareOrdinal(s.Symbol, firstFrame.Symbol) == 0);
// if not, we are starting a new branch
if (callstack == null)
{
callstack = new MergedSymbolicStacks(frames[index].Address, frames[index].Symbol);
Stacks.Add(callstack);
}
// it was the last frame of the stack
if (index == frames.Length - 1)
{
callstack._countAsLeaf++;
return;
}
callstack.AddStack(frames, index + 1);
}
public bool Start(int pid)
{
if (_pid > 0)
{
throw new InvalidOperationException("Profiling session cannot be started more than once at a time...");
}
if (pid <= 0)
{
throw new ArgumentOutOfRangeException(nameof(pid), "Process ID must be greater than 0...");
}
_pid = pid;
_stackCount = 0;
_stacks = new MergedSymbolicStacks();
_missingSymbols = new Dictionary <TraceModuleFile, bool>();
return(OnStart());
}
private static void RenderStack(MergedSymbolicStacks stack, IRenderer visitor, bool isRoot, int increment)
{
var alignment = new string(' ', Padding *increment);
var padding = new string(' ', Padding);
var currentFrame = stack.Frame;
// special root case
if (isRoot)
{
visitor.WriteCount($"{Environment.NewLine}{alignment}{stack.CountAsNode, Padding} ");
}
else
{
visitor.WriteCount($"{Environment.NewLine}{alignment}{stack.CountAsLeaf + stack.CountAsNode, Padding} ");
}
visitor.WriteMethod(stack.Symbol);
var childrenCount = stack.Stacks.Count;
if (childrenCount == 0)
{
visitor.WriteFrameSeparator("");
return;
}
foreach (var nextStackFrame in stack.Stacks.OrderByDescending(s => s.CountAsNode + s.CountAsLeaf))
{
// increment when more than 1 children
var childIncrement = (childrenCount == 1) ? increment : increment + 1;
RenderStack(nextStackFrame, visitor, false, childIncrement);
if (increment != childIncrement)
{
visitor.WriteFrameSeparator($"{Environment.NewLine}{alignment}{padding}{nextStackFrame.CountAsNode + nextStackFrame.CountAsLeaf, Padding} ");
visitor.WriteFrameSeparator($"~~~~ ");
}
}
}
public static void Render(this MergedSymbolicStacks stacks, IRenderer visitor)
{
RenderStack(stacks, visitor, true, 0);
}
