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/*
* Video On Demand Samples
*
* 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.
*
*/
#include <stdint.h>
#include "Console.h"
#include "ThreadWriteNetwork.h"
#include "Multiplexer.h"
CThreadWriteNetwork::CThreadWriteNetwork() :
m_hThread(0), m_bRunning(false), m_Multiplexer(NULL)
{
}
void *CThreadWriteNetwork::Run(void *pInst) {
assert(NULL != pInst);
CThreadWriteNetwork *that = (CThreadWriteNetwork *)pInst;
/* set thread to max priority: */
int ret;
pthread_t this_thread = pthread_self();
struct sched_param params;
params.sched_priority = sched_get_priority_max(SCHED_FIFO);
ret = pthread_setschedparam(this_thread, SCHED_FIFO, ¶ms);
if (ret != 0) {
ConsolePrintf( PRIO_ERROR, RED"CThreadWriteNetwork setschedparam(SCHED_FIFO) failed"RESETCOLOR"\n");
}
// Now verify the change in thread priority
int policy = 0;
ret = pthread_getschedparam(this_thread, &policy, ¶ms);
if (ret != 0) {
ConsolePrintf( PRIO_ERROR, RED"CThreadWriteNetwork getschedparam() failed"RESETCOLOR"\n");
}
bool errorPrinted = false;
WriteResult_t result;
bool shallWait;
while (that->m_bRunning)
{
shallWait = true;
result = that->m_Multiplexer->WriteToDriver();
switch (result)
{
case WriteResult_Failed:
if (!errorPrinted)
{
errorPrinted = true;
ConsolePrintf( PRIO_ERROR, RED"failed to write driver"RESETCOLOR"\n");
}
break;
case WriteResult_WouldBlock:
break;
case WriteResult_Success:
default:
shallWait = false;
break;
}
if ( that->m_bRunning && shallWait )
usleep(1000);
}
pthread_exit(0);
}
void CThreadWriteNetwork::Start()
{
if ( m_bRunning )
return;
if ( NULL == m_Multiplexer )
return;
m_bRunning = true;
if ( 0 != pthread_create(&m_hThread, NULL, Run, this) )
ConsolePrintf( PRIO_ERROR, RED"! failed to create thread"RESETCOLOR"\n");
}
void CThreadWriteNetwork::Stop()
{
if ( m_bRunning )
{
m_bRunning = false;
void *pVal;
pthread_join(m_hThread, &pVal);
m_hThread = 0;
}
}
void CThreadWriteNetwork::AddMultiplexer(CMultiplexer *multiplexer)
{
Stop();
m_Multiplexer = multiplexer;
Start();
}
void CThreadWriteNetwork::RemoveMultiplexer(CMultiplexer *multiplexer)
{
Stop();
m_Multiplexer = NULL;
}
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