CvodeContextManager.cpp

/*
 
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*/
 
#ifdef CHASTE_CVODE
#if CHASTE_SUNDIALS_VERSION >= 60000
#include <cassert>
#include <memory>
 
#include <nvector/nvector_serial.h>
#include <sundials/sundials_types.h> // For SUN_COMM_NULL
#include "CvodeContextManager.hpp"
 
CvodeContextManager::CvodeContextManager()
{
#if CHASTE_SUNDIALS_VERSION >= 70000
    SUNContext_Create(SUN_COMM_NULL, &mSundialsContext);
#else
    SUNContext_Create(NULL, &mSundialsContext);  //"a pointer to the MPI communicator or NULL if not using MPI"
#endif
}
 
CvodeContextManager::~CvodeContextManager()
{
    SUNContext_Free(&mSundialsContext);
}
 
std::shared_ptr<CvodeContextManager> CvodeContextManager::Instance()
{
    // Single instance per thread. Ownership is shared rather than exclusive because the
    // context has to outlive everything created against it: thread-local destructors run at
    // the start of exit(), before the destructors of static objects in shared libraries, and
    // some of those statics (e.g. CellCycleModelOdeSolver's mpInstance) still hold a
    // CvodeAdaptor whose destructor calls CVodeFree(). Freeing the context when the thread
    // goes away would therefore be a use-after-free at exit, which Sundials 7 detects via
    // SUNContext_PeekLastError. Note that make_shared cannot be used here as the constructor
    // is private.
    static thread_local std::shared_ptr<CvodeContextManager> p_instance(new CvodeContextManager());
    return p_instance;
}
 
SUNContext& CvodeContextManager::GetSundialsContext()
{
    assert(mSundialsContext);
    return mSundialsContext;
}
 
#endif // CHASTE_SUNDIALS_VERSION >= 60000
#endif // CHASTE_CVODE