1 files changed, 0 insertions, 224 deletions
diff --git a/apps/examples/pipe/interlock_test.c b/apps/examples/pipe/interlock_test.c
deleted file mode 100644
index 20d4113eb..000000000
--- a/apps/examples/pipe/interlock_test.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/****************************************************************************
- * examples/pipe/interlock_test.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/stat.h>
-
-#include <sys/types.h>
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include "pipe.h"
-
-/****************************************************************************
- * Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: null_writer
- ****************************************************************************/
-
-static void *null_writer(pthread_addr_t pvarg)
-{
-  int fd;
-
-  /* Wait a bit */
-
-  printf("null_writer: started -- sleeping\n");
-  sleep(5);
-
-  /* Then open the FIFO for write access */
-
-  printf("null_writer: Opening FIFO for write access\n");
-  fd = open(FIFO_PATH2, O_WRONLY);
-  if (fd < 0)
-    {
-      fprintf(stderr, "null_writer: Failed to open FIFO %s for writing, errno=%d\n",
-              FIFO_PATH2, errno);
-      return (void*)1;
-    }
-
-  /* Wait a bit more */
-
-  printf("null_writer: Opened %s for writing -- sleeping\n", FIFO_PATH2);
-  sleep(5);
-
-  /* Then close the FIFO */
-
-  printf("null_writer: Closing %s\n", FIFO_PATH2);
-  if (close(fd) != 0)
-    {
-      fprintf(stderr, "null_writer: close failed: %d\n", errno);
-    }
-  sleep(5);
-  
-  printf("null_writer: Returning success\n");
-  return (void*)0;
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: interlock_test
- ****************************************************************************/
-
-int interlock_test(void)
-{
-  pthread_t writerid;
-  void *value;
-  char data[16];
-  ssize_t nbytes;
-  int fd;
-  int ret;
-
-  /* Create a FIFO */
-
-  ret = mkfifo(FIFO_PATH2, 0666);
-  if (ret < 0)
-    {
-      fprintf(stderr, "interlock_test: mkfifo failed with errno=%d\n", errno);
-      return 1;
-    }
-
-  /* Start the null_writer_thread */
-
-  printf("interlock_test: Starting null_writer thread\n");
-  ret = pthread_create(&writerid, NULL, null_writer, (pthread_addr_t)NULL);
-  if (ret != 0)
-    {
-      fprintf(stderr, "interlock_test: Failed to create null_writer thread, error=%d\n", ret);
-      ret = 2;
-      goto errout_with_fifo;
-    }
- 
-  /* Open one end of the FIFO for reading.  This open call should block until the
-   * null_writer thread opens the other end of the FIFO for writing.
-   */
-
-  printf("interlock_test: Opening FIFO for read access\n");
-  fd = open(FIFO_PATH2, O_RDONLY);
-  if (fd < 0)
-    {
-      fprintf(stderr, "interlock_test: Failed to open FIFO %s for reading, errno=%d\n",
-              FIFO_PATH2, errno);
-      ret = 3;
-      goto errout_with_thread;
-    }
-
-  /* Attempt to read one byte from the FIFO.  This should return end-of-file because
-   * the null_writer closes the FIFO without writing anything.
-   */
-
-  printf("interlock_test: Reading from %s\n", FIFO_PATH2);
-  nbytes = read(fd, data, 16);
-  if (nbytes < 0 )
-    {
-      fprintf(stderr, "interlock_test: read failed, errno=%d\n", errno);
-      ret = 4;
-      goto errout_with_file;
-    }
-  else if (ret != 0)
-    {
-      fprintf(stderr, "interlock_test: Read %d bytes of data -- aborting: %d\n", nbytes);
-      ret = 5;
-      goto errout_with_file;
-    }
-
-  /* Close the file */
-
-  printf("interlock_test: Closing %s\n", FIFO_PATH2);
-  if (close(fd) != 0)
-    {
-      fprintf(stderr, "interlock_test: close failed: %d\n", errno);
-    }
-
-  /* Wait for null_writer thread to complete */
-
-  printf("interlock_test: Waiting for null_writer thread\n");
-  ret = pthread_join(writerid, &value);
-  if (ret != 0)
-    {
-      fprintf(stderr, "interlock_test: pthread_join failed, error=%d\n", ret);
-      ret = 6;
-      goto errout_with_fifo;
-    }
-  else
-    {
-      printf("interlock_test: writer returned %d\n", (int)value);
-      if (value != (void*)0)
-        {
-          ret = 7;
-          goto errout_with_fifo;
-        }
-    }
-
-  /* unlink(FIFO_PATH2); */
-  printf("interlock_test: Returning success\n");
-  return 0;
-
-errout_with_file:
-  if (close(fd) != 0)
-    {
-      fprintf(stderr, "interlock_test: close failed: %d\n", errno);
-    }
-errout_with_thread:
-  pthread_detach(writerid);
-  pthread_cancel(writerid);
-errout_with_fifo:
-  /* unlink(FIFO_PATH2); */
-  printf("interlock_test: Returning %d\n", ret);
-  return ret;
-}