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/*
* MOST NetServices "Light" V3.2.7.0.1796 MultiInstance Patch
*
* Copyright (C) 2015 Microchip Technology Germany II GmbH & Co. KG
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You may also obtain this software under a propriety license from Microchip.
* Please contact Microchip for further information.
*
*/
/*!
* \file
* \brief Implementation of message pool class
*
* \cond MNS_INTERNAL_DOC
* \addtogroup G_POOL
* @{
*/
/*------------------------------------------------------------------------------------------------*/
/* Includes */
/*------------------------------------------------------------------------------------------------*/
#include "mns_pool.h"
#include "mns_misc.h"
#include "mns_trace.h"
/*------------------------------------------------------------------------------------------------*/
/* Internal constants */
/*------------------------------------------------------------------------------------------------*/
/*------------------------------------------------------------------------------------------------*/
/* Implementation */
/*------------------------------------------------------------------------------------------------*/
/*! \brief Constructor of message pool class
* \param self The instance
* \param messages Reference to an array of message objects
* \param size Number of message objects the \c messages array is comprising.
* \param mns_inst_id MOST NetServices instance ID
*/
void Pool_Ctor(CPool *self, CMessage messages[], uint16_t size, uint8_t mns_inst_id)
{
uint16_t index;
MISC_MEM_SET(self, 0, sizeof(*self));
self->mns_inst_id = mns_inst_id;
self->initial_size = size;
self->messages = messages;
Dl_Ctor(&self->message_list, self->mns_inst_id);
for (index = 0U; index < size; index++)
{
Msg_Ctor(&messages[index]);
Msg_SetPoolReference(&messages[index], self);
Dl_InsertTail(&self->message_list, Msg_GetNode(&messages[index]));
}
}
/*! \brief Retrieves a message object from the pool
* \param self The instance
* \return Reference to the CMessage structure if a message is available.
* Otherwise \c NULL.
*/
CMessage* Pool_GetMsg(CPool *self)
{
CMessage *msg = NULL;
CDlNode *node = Dl_PopHead(&self->message_list);
if (node != NULL)
{
msg = (CMessage*)node->data_ptr;
}
return msg;
}
/*! \brief Returns a message object to the pool pre-assigned pool
* \param msg_ptr Reference to the message object which needs
* to be returned to the pool.
*/
void Pool_ReturnMsg(CMessage *msg_ptr)
{
CPool *pool_ptr = (CPool*)Msg_GetPoolReference(msg_ptr);
if (pool_ptr != NULL)
{
TR_ASSERT(pool_ptr->mns_inst_id, "[POOL]", (Pool_GetCurrentSize(pool_ptr) < pool_ptr->initial_size));
Dl_InsertTail(&pool_ptr->message_list, Msg_GetNode(msg_ptr));
}
else
{
TR_ERROR((pool_ptr->mns_inst_id, "[POOL]", "Pool_ReturnMsg(): released msg_ptr=0x%p without pool reference", 1U, msg_ptr));
}
}
/*! \brief Retrieves the current number of available message objects in the pool
* \param self The instance
* \return The current number of available message objects in the pool
*/
uint16_t Pool_GetCurrentSize(CPool *self)
{
uint16_t list_size = Dl_GetSize(&self->message_list);
return list_size;
}
/*!
* @}
* \endcond
*/
/*------------------------------------------------------------------------------------------------*/
/* End of file */
/*------------------------------------------------------------------------------------------------*/
|
