CWE-ou-minkata/Sources/Plasma/FeatureLib/pfPython/pyAlarm.cpp

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*==LICENSE==*/
#include "pyAlarm.h"
#include "hsTimer.h"
#include "hsStlUtils.h"

////////////////////////////////////////////////////////////////////

struct pyAlarm
{
    double  fStart;
    float   fSecs;
    PyObject *  fCb;
    uint32_t  fCbContext;
    pyAlarm( double start, float secs, PyObject * cb, uint32_t cbContext )
    : fStart( start )
    , fSecs( secs )
    , fCb( cb )
    , fCbContext( cbContext )
    {
        Py_XINCREF( fCb );
    }
    ~pyAlarm()
    {
        Py_XDECREF( fCb );
    }
    bool MaybeFire( double secs )
    {
        if ( secs-fStart>fSecs )
        {
            Fire();
            return true;
        }
        return false;
    }
    void Fire()
    {
        if ( fCb )
        {
            PyObject* func = nil;

            // Call the callback.
            func = PyObject_GetAttrString( fCb, "onAlarm" );
            if ( func )
            {
                if ( PyCallable_Check(func)>0 )
                {
                    PyObject *retVal = PyObject_CallMethod(fCb, "onAlarm", "l", fCbContext);
                    Py_XDECREF(retVal);
                }
            }
            Py_XDECREF(func);
        }
    }
};


////////////////////////////////////////////////////////////////////

//static
pyAlarmMgr * pyAlarmMgr::GetInstance()
{
    static pyAlarmMgr inst;
    return &inst;
}

pyAlarmMgr::~pyAlarmMgr()
{
//  Clear();
}

void pyAlarmMgr::Update( double secs )
{
    Alarms::iterator it = fAlarms.begin();
    while ( it!=fAlarms.end() )
    {
        pyAlarm * alarm = (*it);
        if ( alarm->MaybeFire( secs ) )
        {
            Alarms::iterator jt = it++;
            fAlarms.erase( jt );
            delete alarm;
        }
        else
        {
            it++;
        }
    }
}

void pyAlarmMgr::SetAlarm( float secs, PyObject * cb, uint32_t cbContext )
{
    double start = hsTimer::GetSysSeconds();
    fAlarms.push_back( TRACKED_NEW pyAlarm( start, secs, cb, cbContext ) );
}

void pyAlarmMgr::Clear()
{
    for (Alarms::iterator i = fAlarms.begin(); i != fAlarms.end(); i++)
        delete *i;
    fAlarms.clear();
}