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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2008-11-17 18:36:56 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2008-11-17 18:36:56 +0000 |
commit | 33f0979adc4165594164fb13611961d60f0f2cfc (patch) | |
tree | 92c8753f6681254f3a455649188acbee6a685fff /nuttx/examples/poll/poll_main.c | |
parent | a13ec05308267148b51a7aac5975895b7bae505f (diff) | |
download | px4-nuttx-33f0979adc4165594164fb13611961d60f0f2cfc.tar.gz px4-nuttx-33f0979adc4165594164fb13611961d60f0f2cfc.tar.bz2 px4-nuttx-33f0979adc4165594164fb13611961d60f0f2cfc.zip |
Test for poll API
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1261 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/examples/poll/poll_main.c')
-rw-r--r-- | nuttx/examples/poll/poll_main.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/nuttx/examples/poll/poll_main.c b/nuttx/examples/poll/poll_main.c new file mode 100644 index 000000000..4e91070b1 --- /dev/null +++ b/nuttx/examples/poll/poll_main.c @@ -0,0 +1,156 @@ +/**************************************************************************** + * examples/poll/poll_main.c + * + * Copyright (C) 2008 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 tid; + int count; + int fd; + int ret; + + /* Test FIFO logic */ + + message("\nuser_start: Creating FIFO %s\n", FIFO_PATH); + ret = mkfifo(FIFO_PATH, 0666); + if (ret < 0) + { + message("user_start: mkfifo failed: %d\n", errno); + return 1; + } + + /* Open the FIFO for blocking, write */ + + fd = open(FIFO_PATH, O_WRONLY); + if (fd < 0) + { + message("user_start: Failed to open FIFO %s for writing, errno=%d\n", + FIFO_PATH, errno); + return 2; + } + + /* Start the listener */ + + message("user_start: Starting poll_listener thread\n"); + + ret = pthread_create(&tid, NULL, poll_listener, NULL); + if (ret != 0) + { + message("user_start: Failed to create poll_listener thread: %d\n", ret); + return 3; + } + + /* 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(fd, buffer, strlen(buffer)); + if (nbytes < 0) + { + message("user_start: Write failed: %d\n", errno); + return 4; + } + + message("user_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); + } + + fflush(stdout); + return 0; +} |