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/****************************************************************************
* examples/poll/poll_main.c
*
* Copyright (C) 2008, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name NuttX 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <pthread.h>
#include <fcntl.h>
#include <poll.h>
#include <errno.h>
#include <debug.h>
#include "poll_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: poll_main
****************************************************************************/
int poll_main(int argc, char *argv[])
{
char buffer[64];
ssize_t nbytes;
pthread_t tid1;
pthread_t tid2;
#ifdef HAVE_NETPOLL
pthread_t tid3;
#endif
int count;
int fd1 = -1;
int fd2 = -1;
int ret;
int exitcode = 0;
/* Open FIFOs */
message("\npoll_main: Creating FIFO %s\n", FIFO_PATH1);
ret = mkfifo(FIFO_PATH1, 0666);
if (ret < 0)
{
message("poll_main: mkfifo failed: %d\n", errno);
exitcode = 1;
goto errout;
}
message("\npoll_main: Creating FIFO %s\n", FIFO_PATH2);
ret = mkfifo(FIFO_PATH2, 0666);
if (ret < 0)
{
message("poll_main: mkfifo failed: %d\n", errno);
exitcode = 2;
goto errout;
}
/* Open the FIFOs for blocking, write */
fd1 = open(FIFO_PATH1, O_WRONLY);
if (fd1 < 0)
{
message("poll_main: Failed to open FIFO %s for writing, errno=%d\n",
FIFO_PATH1, errno);
exitcode = 3;
goto errout;
}
fd2 = open(FIFO_PATH2, O_WRONLY);
if (fd2 < 0)
{
message("poll_main: Failed to open FIFO %s for writing, errno=%d\n",
FIFO_PATH2, errno);
exitcode = 4;
goto errout;
}
/* Start the listeners */
message("poll_main: Starting poll_listener thread\n");
ret = pthread_create(&tid1, NULL, poll_listener, NULL);
if (ret != 0)
{
message("poll_main: Failed to create poll_listener thread: %d\n", ret);
exitcode = 5;
goto errout;
}
message("poll_main: Starting select_listener thread\n");
ret = pthread_create(&tid2, NULL, select_listener, NULL);
if (ret != 0)
{
message("poll_main: Failed to create select_listener thread: %d\n", ret);
exitcode = 6;
goto errout;
}
#ifdef HAVE_NETPOLL
#ifdef CONFIG_NET_TCPBACKLOG
message("poll_main: Starting net_listener thread\n");
ret = pthread_create(&tid3, NULL, net_listener, NULL);
#else
message("poll_main: Starting net_reader thread\n");
ret = pthread_create(&tid3, NULL, net_reader, NULL);
#endif
if (ret != 0)
{
message("poll_main: Failed to create net_listener thread: %d\n", ret);
}
#endif
/* Loop forever */
for (count = 0; ; count++)
{
/* Send a message to the listener... this should wake the listener
* from the poll.
*/
sprintf(buffer, "Message %d", count);
nbytes = write(fd1, buffer, strlen(buffer));
if (nbytes < 0)
{
message("poll_main: Write to fd1 failed: %d\n", errno);
exitcode = 7;
goto errout;
}
nbytes = write(fd2, buffer, strlen(buffer));
if (nbytes < 0)
{
message("poll_main: Write fd2 failed: %d\n", errno);
exitcode = 8;
goto errout;
}
message("\npoll_main: Sent '%s' (%d bytes)\n", buffer, nbytes);
msgflush();
/* Wait awhile. This delay should be long enough that the
* listener will timeout.
*/
sleep(WRITER_DELAY);
}
errout:
if (fd1 >= 0)
{
close(fd1);
}
if (fd2 >= 0)
{
close(fd2);
}
fflush(stdout);
return exitcode;
}
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