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File indexing completed on 2025-10-30 08:37:40

0001 //------------------------------- -*- C++ -*- -------------------------------//
0002 // Copyright Celeritas contributors: see top-level COPYRIGHT file for details
0003 // SPDX-License-Identifier: (Apache-2.0 OR MIT)
0004 //---------------------------------------------------------------------------//
0005 //! \file celeritas/track/CoreStateCounters.hh
0006 //---------------------------------------------------------------------------//
0007 #pragma once
0008 
0009 #include "corecel/Types.hh"
0010 
0011 namespace celeritas
0012 {
0013 //---------------------------------------------------------------------------//
0014 /*!
0015  * Counters for within-step track initialization and activity.
0016  *
0017  * These counters are updated *by value on the host at every step* so they
0018  * should not be stored in TrackInitStateData because then the device-memory
0019  * copy will not be synchronized.
0020  *
0021  * For all user \c StepActionOrder (TODO: this may change if we add a
0022  * "user_end"), all but the secondaries/alive
0023  * counts are for the current step iteration, and secondaries/alive values
0024  * are from the previous step iteration.
0025  *
0026  * \todo Drop the 'num' prefix since we know they're counters.
0027  */
0028 struct CoreStateCounters
0029 {
0030     //!@{
0031     //! \name Set after primaries are generated
0032     size_type num_generated{0};  //!< Number of track initializers created
0033     //!@}
0034     //
0035     //!@{
0036     //! \name Updated during generation and initialization
0037     size_type num_initializers{0};  //!< Number of track initializers
0038     size_type num_vacancies{0};  //!< Number of empty track slots
0039     //!@}
0040 
0041     //!@{
0042     //! \name Set after tracks are initialized
0043     size_type num_active{0};  //!< Number of active tracks at start
0044     //!@}
0045 
0046     //!@{
0047     //! \name Set after secondaries are generated
0048     size_type num_secondaries{0};  //!< Number of secondaries produced
0049     size_type num_alive{0};  //!< Number of alive tracks at end
0050     //!@}
0051 };
0052 
0053 //---------------------------------------------------------------------------//
0054 }  // namespace celeritas