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Diffstat (limited to 'apps/examples/poll/poll_listener.c')
| -rw-r--r-- | apps/examples/poll/poll_listener.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/apps/examples/poll/poll_listener.c b/apps/examples/poll/poll_listener.c deleted file mode 100644 index fe1c95089..000000000 --- a/apps/examples/poll/poll_listener.c +++ /dev/null @@ -1,262 +0,0 @@ -/**************************************************************************** - * examples/poll/poll_listener.c - * - * Copyright (C) 2008 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * 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 <stdbool.h> -#include <stdio.h> -#include <unistd.h> -#include <string.h> -#include <pthread.h> -#include <poll.h> -#include <fcntl.h> -#include <errno.h> -#include <debug.h> - -#include "poll_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -#if defined(CONFIG_DEV_CONSOLE) && !defined(CONFIG_DEV_LOWCONSOLE) -# define HAVE_CONSOLE -# define NPOLLFDS 2 -# define CONSNDX 0 -# define FIFONDX 1 -#else -# undef HAVE_CONSOLE -# define NPOLLFDS 1 -# define FIFONDX 0 -#endif - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: poll_listener - ****************************************************************************/ - -void *poll_listener(pthread_addr_t pvarg) -{ - struct pollfd fds[NPOLLFDS]; - char buffer[64]; - ssize_t nbytes; - bool timeout; - bool pollin; - int nevents; - int fd; - int ret; - int i; - - /* Open the FIFO for non-blocking read */ - - message("poll_listener: Opening %s for non-blocking read\n", FIFO_PATH1); - fd = open(FIFO_PATH1, O_RDONLY|O_NONBLOCK); - if (fd < 0) - { - message("poll_listener: ERROR Failed to open FIFO %s: %d\n", - FIFO_PATH1, errno); - (void)close(fd); - return (void*)-1; - } - - /* Loop forever */ - - for (;;) - { - message("poll_listener: Calling poll()\n"); - - memset(fds, 0, sizeof(struct pollfd)*NPOLLFDS); -#ifdef HAVE_CONSOLE - fds[CONSNDX].fd = 0; - fds[CONSNDX].events = POLLIN; - fds[CONSNDX].revents = 0; -#endif - fds[FIFONDX].fd = fd; - fds[FIFONDX].events = POLLIN; - fds[FIFONDX].revents = 0; - - timeout = false; - pollin = false; - - ret = poll(fds, NPOLLFDS, POLL_LISTENER_DELAY); - - message("\npoll_listener: poll returned: %d\n", ret); - if (ret < 0) - { - message("poll_listener: ERROR poll failed: %d\n", errno); - } - else if (ret == 0) - { - message("poll_listener: Timeout\n"); - timeout = true; - } - else if (ret > NPOLLFDS) - { - message("poll_listener: ERROR poll reported: %d\n"); - } - else - { - pollin = true; - } - - nevents = 0; - for (i = 0; i < NPOLLFDS; i++) - { - message("poll_listener: FIFO revents[%d]=%02x\n", i, fds[i].revents); - if (timeout) - { - if (fds[i].revents != 0) - { - message("poll_listener: ERROR? expected revents=00, received revents[%d]=%02x\n", - fds[i].revents, i); - } - } - else if (pollin) - { - if (fds[i].revents == POLLIN) - { - nevents++; - } - else if (fds[i].revents != 0) - { - message("poll_listener: ERROR unexpected revents[i]=%02x\n", - i, fds[i].revents); - } - } - } - - if (pollin && nevents != ret) - { - message("poll_listener: ERROR found %d events, poll reported %d\n", nevents, ret); - } - - /* In any event, read until the pipe/serial is empty */ - - for (i = 0; i < NPOLLFDS; i++) - { - do - { -#ifdef HAVE_CONSOLE - /* Hack to work around the fact that the console driver on the - * simulator is always non-blocking. - */ - - if (i == CONSNDX) - { - if ((fds[CONSNDX].revents & POLLIN) != 0) - { - buffer[0] = getchar(); - nbytes = 1; - } - else - { - nbytes = 0; - } - } - else -#endif - { - /* The pipe works differently, it returns whatever data - * it has available without blocking. - */ - - nbytes = read(fds[i].fd, buffer, 63); - } - - if (nbytes <= 0) - { - if (nbytes == 0 || errno == EAGAIN) - { - if ((fds[i].revents & POLLIN) != 0) - { - message("poll_listener: ERROR no read data[%d]\n", i); - } - } - else if (errno != EINTR) - { - message("poll_listener: read[%d] failed: %d\n", i, errno); - } - nbytes = 0; - } - else - { - if (timeout) - { - message("poll_listener: ERROR? Poll timeout, but data read[%d]\n", i); - message(" (might just be a race condition)\n"); - } - - buffer[nbytes] = '\0'; - message("poll_listener: Read[%d] '%s' (%d bytes)\n", i, buffer, nbytes); - } - - /* Suppress error report if no read data on the next time through */ - - fds[i].revents = 0; - } - while (nbytes > 0); - } - - /* Make sure that everything is displayed */ - - msgflush(); - } - - /* Won't get here */ - - (void)close(fd); - return NULL; -} |