diff options
Diffstat (limited to 'apps/examples/poll/poll_main.c')
| -rw-r--r-- | apps/examples/poll/poll_main.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/apps/examples/poll/poll_main.c b/apps/examples/poll/poll_main.c new file mode 100644 index 000000000..d66e7f269 --- /dev/null +++ b/apps/examples/poll/poll_main.c @@ -0,0 +1,229 @@ +/**************************************************************************** + * 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: user_initialize + ****************************************************************************/ + +void user_initialize(void) +{ +} + +/**************************************************************************** + * Name: user_start + ****************************************************************************/ + +int user_start(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("\nuser_start: Creating FIFO %s\n", FIFO_PATH1); + ret = mkfifo(FIFO_PATH1, 0666); + if (ret < 0) + { + message("user_start: mkfifo failed: %d\n", errno); + exitcode = 1; + goto errout; + } + + message("\nuser_start: Creating FIFO %s\n", FIFO_PATH2); + ret = mkfifo(FIFO_PATH2, 0666); + if (ret < 0) + { + message("user_start: 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("user_start: 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("user_start: Failed to open FIFO %s for writing, errno=%d\n", + FIFO_PATH2, errno); + exitcode = 4; + goto errout; + } + + /* Start the listeners */ + + message("user_start: Starting poll_listener thread\n"); + + ret = pthread_create(&tid1, NULL, poll_listener, NULL); + if (ret != 0) + { + message("user_start: Failed to create poll_listener thread: %d\n", ret); + exitcode = 5; + goto errout; + } + + message("user_start: Starting select_listener thread\n"); + + ret = pthread_create(&tid2, NULL, select_listener, NULL); + if (ret != 0) + { + message("user_start: Failed to create select_listener thread: %d\n", ret); + exitcode = 6; + goto errout; + } + +#ifdef HAVE_NETPOLL +#ifdef CONFIG_NET_TCPBACKLOG + message("user_start: Starting net_listener thread\n"); + + ret = pthread_create(&tid3, NULL, net_listener, NULL); +#else + message("user_start: Starting net_reader thread\n"); + + ret = pthread_create(&tid3, NULL, net_reader, NULL); +#endif + if (ret != 0) + { + message("user_start: 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("user_start: Write to fd1 failed: %d\n", errno); + exitcode = 7; + goto errout; + } + + nbytes = write(fd2, buffer, strlen(buffer)); + if (nbytes < 0) + { + message("user_start: Write fd2 failed: %d\n", errno); + exitcode = 8; + goto errout; + } + + message("\nuser_start: 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; +} |