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significant optimisation of the math interpreter using integer address tables for variables and functions

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This commit is contained in:
Antonin Portelli
2014-04-08 19:48:52 +01:00
parent b0f6c30445
commit 47e159e041
9 changed files with 239 additions and 144 deletions
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25
lib/CompiledFunction.cpp
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@@ -44,7 +44,23 @@ void CompiledDoubleFunction::setCode(const string &code)
{
interpreter_.reset(new MathInterpreter(code));
context_.reset(new RunContext);
StdMath::addStdMathFunc(context_->fTable);
varAddress_.reset(new std::vector<unsigned int>);
isCompiled_.reset(new bool(false));
}
// compile /////////////////////////////////////////////////////////////////////
void CompiledDoubleFunction::compile(void) const
{
if (!*isCompiled_)
{
interpreter_->compile(*(context_));
varAddress_->clear();
for (Index i = 0; i < getNArg(); ++i)
{
varAddress_->push_back(context_->vTable.at("x_" + strFrom(i)));
}
*isCompiled_ = true;
}
}
// function call ///////////////////////////////////////////////////////////////
@@ -52,9 +68,10 @@ double CompiledDoubleFunction::operator()(const double *arg) const
{
double result;
for (Index i = 0; i < getNArg(); ++i)
compile();
for (unsigned int i = 0; i < getNArg(); ++i)
{
context_->vTable["x_" + strFrom(i)] = arg[i];
context_->vMem[(*varAddress_)[i]] = arg[i];
}
(*interpreter_)(*context_);
if (!context_->dStack.empty())
@@ -74,7 +91,7 @@ double CompiledDoubleFunction::operator()(const double *arg) const
// IO //////////////////////////////////////////////////////////////////////////
ostream & Latan::operator<<(ostream &out, CompiledDoubleFunction &f)
{
f.interpreter_->compile();
f.compile();
out << *(f.interpreter_);
return out;