/*

   BLIS
   An object-based framework for developing high-performance BLAS-like
   libraries.

   Copyright (C) 2014, The University of Texas at Austin

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are
   met:
    - Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    - Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    - Neither the name(s) of the copyright holder(s) nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#ifndef BLIS_THRCOMM_PTHREADS_H
#define BLIS_THRCOMM_PTHREADS_H

// Define thrcomm_t for situations when POSIX multithreading is enabled.
#ifdef BLIS_ENABLE_PTHREADS 

#ifdef BLIS_USE_PTHREAD_BARRIER
struct thrcomm_s
{
	void*                 sent_object;
	dim_t                 n_threads;

	bli_pthread_barrier_t barrier;
};
#else
struct thrcomm_s
{
	void*  sent_object;
	dim_t  n_threads;

//#ifdef BLIS_USE_PTHREAD_MUTEX
//	bli_pthread_mutex_t mutex;
//#endif

	// NOTE: barrier_sense was originally a gint_t-based bool_t, but upon
	// redefining bool_t as bool we discovered that some gcc __atomic built-ins
	// don't allow the use of bool for the variables being operated upon.
	// (Specifically, this was observed of __atomic_fetch_xor(), but it likely
	// applies to all other related built-ins.) Thus, we get around this by
	// redefining barrier_sense as a gint_t.
	//volatile gint_t  barrier_sense;
	gint_t barrier_sense;
	dim_t  barrier_threads_arrived;
};
#endif

typedef struct thrcomm_s thrcomm_t;

#endif

#endif