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author | Tavian Barnes <tavianator@tavianator.com> | 2014-08-19 17:10:03 -0400 |
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committer | Tavian Barnes <tavianator@tavianator.com> | 2015-10-25 11:03:56 -0400 |
commit | 7b09710392d35fb55b52031d447a542d99fc6b4b (patch) | |
tree | 270eb927ee8c52ceeb99926ebf4843704775a610 /libdimension/internal/future.h | |
parent | 200c86b91ea7063d35be3bffc11c5da53c054653 (diff) | |
download | dimension-7b09710392d35fb55b52031d447a542d99fc6b4b.tar.xz |
Modularize the libdimension codebase.
Diffstat (limited to 'libdimension/internal/future.h')
-rw-r--r-- | libdimension/internal/future.h | 61 |
1 files changed, 61 insertions, 0 deletions
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 <tavianator@tavianator.com> * + * * + * 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 * + * <http://www.gnu.org/licenses/>. * + *************************************************************************/ + +/** + * @file + * Future object implementation. + */ + +#ifndef DMNSN_INTERNAL_FUTURE_H +#define DMNSN_INTERNAL_FUTURE_H + +#include <pthread.h> + +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 |