From 7b09710392d35fb55b52031d447a542d99fc6b4b Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Tue, 19 Aug 2014 17:10:03 -0400 Subject: Modularize the libdimension codebase. --- libdimension/internal/future.h | 61 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 libdimension/internal/future.h (limited to 'libdimension/internal/future.h') diff --git a/libdimension/internal/future.h b/libdimension/internal/future.h new file mode 100644 index 0000000..047523e --- /dev/null +++ b/libdimension/internal/future.h @@ -0,0 +1,61 @@ +/************************************************************************* + * Copyright (C) 2010-2014 Tavian Barnes * + * * + * This file is part of The Dimension Library. * + * * + * The Dimension Library is free software; you can redistribute it and/ * + * or modify it under the terms of the GNU Lesser General Public License * + * as published by the Free Software Foundation; either version 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension Library is distributed in the hope that it will be * + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this program. If not, see * + * . * + *************************************************************************/ + +/** + * @file + * Future object implementation. + */ + +#ifndef DMNSN_INTERNAL_FUTURE_H +#define DMNSN_INTERNAL_FUTURE_H + +#include + +struct dmnsn_future { + size_t progress; ///< Completed loop iterations. + size_t total; ///< Total expected loop iterations. + + /// The worker thread. + pthread_t thread; + + /// Mutex to guard progress and total. + pthread_mutex_t mutex; + + /// Condition variable for waiting for a particular amount of progress. + pthread_cond_t cond; + + /// Minimum waited-on value. + double min_wait; + + /// Number of threads working on the future's background task. + unsigned int nthreads; + /// Number of threads not yet paused. + unsigned int nrunning; + /// Count of threads holding the future paused. + unsigned int npaused; + /// Condition variable for waiting for nrunning == 0. + pthread_cond_t none_running_cond; + /// Condition variable for waiting for nrunning == nthreads. + pthread_cond_t all_running_cond; + /// Condition variable for waiting for npaused == 0. + pthread_cond_t resume_cond; +}; + +#endif // DMNSN_INTERNAL_FUTURE_H -- cgit v1.2.3