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Get the newly designed 1D-integrator class thread-safe (at the cost of numerous memory allocations and deallocations)

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This commit is contained in:
Bastian M. Wojek 2011-06-02 20:24:09 +00:00
parent 72013cfaf0
commit edcda9904c
1 changed files with 10 additions and 24 deletions
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34
src/external/BMWtools/BMWIntegrator.h vendored
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@ -49,33 +49,15 @@ using namespace std;
*/
class T2Integrator {
public:
T2Integrator();
virtual ~T2Integrator();
virtual double FuncAtX(double, const std::vector<double> &par) const = 0;
T2Integrator() {}; ///< default constructor
virtual ~T2Integrator() {}; ///< default destructor
virtual double IntegrateFunc(double, double, const std::vector<double> &par);
private:
virtual double FuncAtX(double, const std::vector<double> &par) const = 0;
static double FuncAtXgsl(double, void *);
ROOT::Math::GSLIntegrator *fIntegrator; ///< pointer to the GSL integrator
};
/**
* <p>Constructor of the alternative base class for 1D integrations
* Allocation of memory for an integration using the adaptive 31 point Gauss-Kronrod rule
*/
inline T2Integrator::T2Integrator() {
fIntegrator = new ROOT::Math::GSLIntegrator(ROOT::Math::Integration::kADAPTIVE,ROOT::Math::Integration::kGAUSS31);
}
/**
* <p>Destructor of the alternative base class for 1D integrations
* Clean up.
*/
inline T2Integrator::~T2Integrator(){
delete fIntegrator;
fIntegrator=0;
}
/**
* <p>Method for passing the integrand function value to the integrator.
*
@ -106,7 +88,13 @@ inline double T2Integrator::IntegrateFunc(double x1, double x2, const std::vecto
pair<T2Integrator*, const vector<double>*> ptrPair;
ptrPair.first = (this);
ptrPair.second = &par;
return fIntegrator->Integral(&T2Integrator::FuncAtXgsl, static_cast<void*>(&ptrPair), x1, x2);
ROOT::Math::GSLIntegrator *integrator = new ROOT::Math::GSLIntegrator(ROOT::Math::Integration::kADAPTIVE,ROOT::Math::Integration::kGAUSS31);
double value(integrator->Integral(&T2Integrator::FuncAtXgsl, static_cast<void*>(&ptrPair), x1, x2));
delete integrator;
integrator = 0;
return value;
}
@ -123,8 +111,6 @@ inline double T2Integrator::IntegrateFunc(double x1, double x2, const std::vecto
/**
* <p>Base class for 1D integrations using the GNU Scientific Library integrator.
* The function which should be integrated has to be implemented in a derived class.