diff options
Diffstat (limited to 'nuttx/examples/poll/select_listener.c')
| -rw-r--r-- | nuttx/examples/poll/select_listener.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/nuttx/examples/poll/select_listener.c b/nuttx/examples/poll/select_listener.c deleted file mode 100644 index 80039ada3..000000000 --- a/nuttx/examples/poll/select_listener.c +++ /dev/null @@ -1,193 +0,0 @@ -/**************************************************************************** - * examples/poll/select_listener.c - * - * Copyright (C) 2008, 2009 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 <sys/select.h> -#include <stdbool.h> -#include <stdio.h> -#include <unistd.h> -#include <string.h> -#include <pthread.h> -#include <fcntl.h> -#include <errno.h> -#include <debug.h> - -#include "poll_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: select_listener - ****************************************************************************/ - -void *select_listener(pthread_addr_t pvarg) -{ - fd_set rfds; - struct timeval tv; - char buffer[64]; - ssize_t nbytes; - bool timeout; - bool ready; - int fd; - int ret; - - /* Open the FIFO for non-blocking read */ - - message("select_listener: Opening %s for non-blocking read\n", FIFO_PATH2); - fd = open(FIFO_PATH2, O_RDONLY|O_NONBLOCK); - if (fd < 0) - { - message("select_listener: ERROR Failed to open FIFO %s: %d\n", - FIFO_PATH2, errno); - (void)close(fd); - return (void*)-1; - } - - /* Loop forever */ - - for (;;) - { - message("select_listener: Calling select()\n"); - - FD_ZERO(&rfds); - FD_SET(fd, &rfds); - - tv.tv_sec = SELECT_LISTENER_DELAY; - tv.tv_usec = 0; - - timeout = false; - ready = false; - - ret = select(fd+1, (FAR fd_set*)&rfds, (FAR fd_set*)NULL, (FAR fd_set*)NULL, &tv); - message("\nselect_listener: select returned: %d\n", ret); - - if (ret < 0) - { - message("select_listener: ERROR select failed: %d\n"); - } - else if (ret == 0) - { - message("select_listener: Timeout\n"); - timeout = true; - } - else - { - if (ret != 1) - { - message("select_listener: ERROR poll reported: %d\n"); - } - else - { - ready = true; - } - - if (!FD_ISSET(fd, rfds)) - { - message("select_listener: ERROR fd=%d not in fd_set\n"); - } - } - - /* In any event, read until the pipe is empty */ - - do - { - nbytes = read(fd, buffer, 63); - if (nbytes <= 0) - { - if (nbytes == 0 || errno == EAGAIN) - { - if (ready) - { - message("select_listener: ERROR no read data\n"); - } - } - else if (errno != EINTR) - { - message("select_listener: read failed: %d\n", errno); - } - nbytes = 0; - } - else - { - if (timeout) - { - message("select_listener: ERROR? Poll timeout, but data read\n"); - message(" (might just be a race condition)\n"); - } - - buffer[nbytes] = '\0'; - message("select_listener: Read '%s' (%d bytes)\n", buffer, nbytes); - } - - timeout = false; - ready = false; - } - while (nbytes > 0); - - /* Make sure that everything is displayed */ - - msgflush(); - } - - /* Won't get here */ - - (void)close(fd); - return NULL; -} |