/*
 * Copyright (c) 2014, Siemens AG. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 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.
 */

#include <cassert>

#include <embb/base/exceptions.h>
#include <embb/mtapi/mtapi.h>

namespace embb {
namespace mtapi {

Affinity::Affinity() {
#if MTAPI_CPP_AUTOMATIC_INITIALIZE
  Node::GetInstance(); // MTAPI has to be initialized
#endif
  mtapi_status_t status;
  mtapi_affinity_init(&affinity_, MTAPI_TRUE, &status);
  if (MTAPI_SUCCESS != status) {
    EMBB_THROW(embb::base::ErrorException,
      "Could not default construct Affinity.");
  }
}

Affinity::Affinity(bool initial_affinity) {
#if MTAPI_CPP_AUTOMATIC_INITIALIZE
  Node::GetInstance(); // MTAPI has to be initialized
#endif
  mtapi_status_t status;
  mtapi_boolean_t aff = initial_affinity ? MTAPI_TRUE : MTAPI_FALSE;
  mtapi_affinity_init(&affinity_, aff, &status);
  if (MTAPI_SUCCESS != status) {
    EMBB_THROW(embb::base::ErrorException,
      "Could not default construct Affinity.");
  }
}

void Affinity::Add(mtapi_uint_t worker) {
  mtapi_status_t status;
  mtapi_affinity_set(&affinity_, worker, MTAPI_TRUE, &status);
  assert(MTAPI_SUCCESS == status);
}

void Affinity::Remove(mtapi_uint_t worker) {
  mtapi_status_t status;
  mtapi_affinity_set(&affinity_, worker, MTAPI_FALSE, &status);
  assert(MTAPI_SUCCESS == status);
}

bool Affinity::IsSet(mtapi_uint_t worker) {
  mtapi_status_t status;
  mtapi_boolean_t aff = mtapi_affinity_get(&affinity_, worker, &status);
  assert(MTAPI_SUCCESS == status);
  return MTAPI_TRUE == aff;
}

} // namespace mtapi
} // namespace embb