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/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
 *   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 Intel Corporation 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
 *   OWNER 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 _RTE_PER_LCORE_H_
#define _RTE_PER_LCORE_H_

/**
 * @file
 *
 * Per-lcore variables in RTE
 *
 * This file defines an API for instantiating per-lcore "global
 * variables" that are environment-specific. Note that in all
 * environments, a "shared variable" is the default when you use a
 * global variable.
 *
 * Parts of this are execution environment specific.
 */

#ifdef __cplusplus
extern "C" {
#endif

#include <pthread.h>

/**
 * Macro to define a per lcore variable "var" of type "type", don't
 * use keywords like "static" or "volatile" in type, just prefix the
 * whole macro.
 */
#define RTE_DEFINE_PER_LCORE(type, name)			\
	__thread __typeof__(type) per_lcore_##name

/**
 * Macro to declare an extern per lcore variable "var" of type "type"
 */
#define RTE_DECLARE_PER_LCORE(type, name)			\
	extern __thread __typeof__(type) per_lcore_##name

/**
 * Read/write the per-lcore variable value
 */
#define RTE_PER_LCORE(name) (per_lcore_##name)

#ifdef __cplusplus
}
#endif

#endif /* _RTE_PER_LCORE_H_ */