101 lines
4.1 KiB
C
101 lines
4.1 KiB
C
/*******************************************************************************
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** This file is provided under a dual BSD/GPLv2 license. When using or
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** redistributing this file, you may do so under either license.
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**
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** GPL LICENSE SUMMARY
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**
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** Copyright (c) 2013 Intel Corporation All Rights Reserved
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**
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** This program is free software; you can redistribute it and/or modify it under
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** the terms of version 2 of the GNU General Public License as published by the
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** Free Software Foundation.
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**
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** This program is distributed in the hope that it will be useful, but WITHOUT
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** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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** FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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** details.
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**
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** You should have received a copy of the GNU General Public License along with
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** this program; if not, write to the Free Software Foundation, Inc.,
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** 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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** The full GNU General Public License is included in this distribution in the
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** file called LICENSE.GPL.
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**
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** BSD LICENSE
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**
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** Copyright (c) 2013 Intel Corporation All Rights Reserved
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are met:
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**
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** * Redistributions of source code must retain the above copyright notice, this
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** list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright notice,
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** this list of conditions and the following disclaimer in the documentation
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** and/or other materials provided with the distribution.
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** * Neither the name of Intel Corporation nor the names of its contributors may
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** be used to endorse or promote products derived from this software without
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** specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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** LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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** INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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** CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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** ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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** POSSIBILITY OF SUCH DAMAGE.
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**
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*******************************************************************************/
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#ifndef _ESIF_QUEUE_H_
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#define _ESIF_QUEUE_H_
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#include "esif_ipc.h"
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/* Queue Instance */
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struct esif_queue_instance {
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u32 us_timeout; /* Timeout in Microseconds */
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u32 max_size; /* Maximum allowable queue size in items */
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u32 current_size; /* Current queeue size in items */
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esif_ccb_lock_t lock; /* Lock */
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esif_ccb_sem_t semaphore; /* To allow blocking if queue is empty */
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struct esif_queue_node *head_ptr; /* First event or NULL if queue Is empty */
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struct esif_queue_node *tail_ptr; /* Last event or NULL if queue Is empty */
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char *name_ptr; /* Queue Name */
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct esif_queue_instance *esif_queue_create (u32 depth, char *name_ptr);
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void esif_queue_destroy (struct esif_queue_instance *queue_ptr);
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enum esif_rc esif_queue_push (struct esif_queue_instance *queue_ptr,
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struct esif_ipc *ipc_ptr);
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enum esif_rc esif_queue_requeue (struct esif_queue_instance *queue_ptr,
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struct esif_ipc *ipc_ptr);
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struct esif_ipc *esif_queue_pull (struct esif_queue_instance *queue_ptr);
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u32 esif_queue_size (struct esif_queue_instance *queue_ptr);
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/* Init / Exit */
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enum esif_rc esif_queue_init (void);
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void esif_queue_exit (void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ESIF_QUEUE_H_ */
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/*****************************************************************************/
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/*****************************************************************************/
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/*****************************************************************************/
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