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/*************************************************************************
* Copyright (C) 2010-2011 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
* Progress object implementation.
*/
#include <pthread.h>
/** Allocate a new progress object. */
DMNSN_INTERNAL dmnsn_progress *dmnsn_new_progress(void);
/** Set the total number of loop iterations. */
DMNSN_INTERNAL void dmnsn_set_progress_total(dmnsn_progress *progress,
size_t total);
/** Increment the progress counter. */
DMNSN_INTERNAL void dmnsn_increment_progress(dmnsn_progress *progress);
/** Instantly complete the progress. */
DMNSN_INTERNAL void dmnsn_done_progress(dmnsn_progress *progress);
struct dmnsn_progress {
size_t progress; /**< Completed loop iterations. */
size_t total; /**< Total expected loop iterations. */
/* The worker thread */
pthread_t thread;
/* Read-write synchronization */
pthread_rwlock_t *rwlock;
/* Condition variable for waiting for a particular amount of progress */
pthread_cond_t *cond;
pthread_mutex_t *mutex;
/* Minimum waited-on value */
volatile double min_wait;
volatile double *min_waitp; /* Hack for const values */
};
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