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// ==========================================================================
// omp_wrapper.h
// ==========================================================================
// Copyright (c) 2006-2026, Knut Reinert, FU Berlin
// All rights reserved.
//
// 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 of Knut Reinert or the FU Berlin 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 KNUT REINERT OR THE FU BERLIN 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.
//
// ==========================================================================
// Author: Manuel Holtgrewe <manuel.holtgrewe@fu-berlin.de>
// ==========================================================================
// Wrapper code for OpenMP things. Currently only RAII stuff for locks.
// ==========================================================================
#ifdef _OPENMP
#include <omp.h>
#endif // #ifdef _OPENMP
#ifndef APPS_MASON2_OMP_WRAPPER_H_
#define APPS_MASON2_OMP_WRAPPER_H_
// ============================================================================
// Forwards
// ============================================================================
// ============================================================================
// Tags, Classes, Enums
// ============================================================================
// ----------------------------------------------------------------------------
// OmpLock
// ----------------------------------------------------------------------------
// A wrapper for OpenMP locks.
class OmpLock
{
public:
friend class OmpLockGuard;
OmpLock()
{
#ifdef _OPENMP
omp_init_lock(&theLock);
#endif // #ifdef _OPENMP
}
~OmpLock()
{
#ifdef _OPENMP
omp_destroy_lock&(theLock);
#endif // #ifdef _OPENMP
}
private:
void acquire()
{
#ifdef _OPENMP
omp_set_lock(&theLock);
#endif // #ifdef _OPENMP
}
void release()
{
#ifdef _OPENMP
omp_unset_lock(&theLock);
#endif // #ifdef _OPENMP
}
#ifdef _OPENMP
omp_lock_t theLock;
#endif // #ifdef _OPENMP
};
// ----------------------------------------------------------------------------
// OmpLockGuard
// ----------------------------------------------------------------------------
// Implement RAII-style locking of OmpLock objects.
class OmpLockGuard
{
public:
OmpLockGuard(OmpLock & lock) : lock(lock)
{
lock.acquire();
}
~OmpLockGuard()
{
lock.release();
}
private:
OmpLock & lock;
};
// ============================================================================
// Metafunctions
// ============================================================================
// ============================================================================
// Functions
// ============================================================================
#endif // #ifndef APPS_MASON2_OMP_WRAPPER_H_
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