private void Compile(object frameObj)
{
if (Compiled)
{
return;
}
lock (this)
{
if (Compiled)
{
return;
}
//PerfTrack.NoteEvent(PerfTrack.Categories.Compiler, "Interpreted loop compiled");
InterpretedFrame frame = (InterpretedFrame)frameObj;
var compiler = new LoopCompiler(_loop, frame.Interpreter.LabelMapping, _variables, _closureVariables, _instructionIndex, _loopEnd);
var instructions = frame.Interpreter.Instructions.Instructions;
// replace this instruction with an optimized one:
instructions[_instructionIndex] = new CompiledLoopInstruction(compiler.CreateDelegate());
// invalidate this instruction, some threads may still hold on it:
_loop = null;
_variables = null;
_closureVariables = null;
}
}
internal EnterLoopInstruction(PowerShellLoopExpression loop, LocalVariables locals, int compilationThreshold, int instructionIndex)
{
_loop = loop;
_variables = locals.CopyLocals();
_closureVariables = locals.ClosureVariables;
_compilationThreshold = compilationThreshold;
_instructionIndex = instructionIndex;
}
internal LoopCompiler(PowerShellLoopExpression loop, HybridReferenceDictionary <LabelTarget, BranchLabel> labelMapping, Dictionary <ParameterExpression, LocalVariable> locals, Dictionary <ParameterExpression, LocalVariable> closureVariables, int loopStartInstructionIndex, int loopEndInstructionIndex)
{
this._loop = loop;
this._outerVariables = locals;
this._closureVariables = closureVariables;
this._frameDataVar = Expression.Parameter(typeof(object[]));
this._frameClosureVar = Expression.Parameter(typeof(StrongBox <object>[]));
this._frameVar = Expression.Parameter(typeof(InterpretedFrame));
this._loopVariables = new Dictionary <ParameterExpression, LoopVariable>();
this._returnLabel = Expression.Label(typeof(int));
this._labelMapping = labelMapping;
this._loopStartInstructionIndex = loopStartInstructionIndex;
this._loopEndInstructionIndex = loopEndInstructionIndex;
}
private void Compile(object frameObj)
{
if (!this.Compiled)
{
lock (this)
{
if (!this.Compiled)
{
InterpretedFrame frame = (InterpretedFrame)frameObj;
LoopCompiler compiler = new LoopCompiler(this._loop, frame.Interpreter.LabelMapping, this._variables, this._closureVariables, this._instructionIndex, this._loopEnd);
frame.Interpreter.Instructions.Instructions[this._instructionIndex] = new CompiledLoopInstruction(compiler.CreateDelegate());
this._loop = null;
this._variables = null;
this._closureVariables = null;
}
}
}
}
