1 files changed, 0 insertions, 145 deletions
diff --git a/nuttx/libc/misc/lib_filesem.c b/nuttx/libc/misc/lib_filesem.c
deleted file mode 100644
index f38ff5f23..000000000
--- a/nuttx/libc/misc/lib_filesem.c
+++ /dev/null
@@ -1,145 +0,0 @@
-/************************************************************************
- * libc/misc/lib_filesem.c
- *
- *   Copyright (C) 2007, 2009, 2011 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 <unistd.h>
-#include <semaphore.h>
-#include <errno.h>
-#include <assert.h>
-
-#include "lib_internal.h"
-
-#if CONFIG_STDIO_BUFFER_SIZE > 0
-
-/************************************************************************
- * Pre-processor Definitions
- ************************************************************************/
-
-/************************************************************************
- * Private Data
- ************************************************************************/
-
-/************************************************************************
- * Global Functions
- ************************************************************************/
-
-/************************************************************************
- * lib_sem_initialize
- ************************************************************************/
-
-void lib_sem_initialize(FAR struct file_struct *stream)
-{
-  /* Initialize the LIB semaphore to one (to support one-at-a-time access
-   * to private data sets.
-   */
-
-  (void)sem_init(&stream->fs_sem, 0, 1);
-
-  stream->fs_holder = -1;
-  stream->fs_counts = 0;
-}
-
-/************************************************************************
- * lib_take_semaphore
- ************************************************************************/
-
-void lib_take_semaphore(FAR struct file_struct *stream)
-{
-  pid_t my_pid = getpid();
-
-  /* Do I already have the semaphore? */
-
-  if (stream->fs_holder == my_pid)
-    {
-      /* Yes, just increment the number of references that I have */
-
-      stream->fs_counts++;
-    }
-  else
-    {
-      /* Take the semaphore (perhaps waiting) */
-
-      while (sem_wait(&stream->fs_sem) != 0)
-        {
-          /* The only case that an error should occr here is if the wait
-           * was awakened by a signal.
-           */
-
-          ASSERT(get_errno() == EINTR);
-        }
-
-      /* We have it.  Claim the stak and return */
-
-      stream->fs_holder = my_pid;
-      stream->fs_counts = 1;
-    }
-}
-
-/************************************************************************
- * lib_give_semaphore
- ************************************************************************/
-
-void lib_give_semaphore(FAR struct file_struct *stream)
-{
-  pid_t my_pid = getpid();
-
-  /* I better be holding at least one reference to the semaphore */
-
-  ASSERT(stream->fs_holder == my_pid);
-
-  /* Do I hold multiple references to the semphore */
-
-  if (stream->fs_counts > 1)
-    {
-      /* Yes, just release one count and return */
-
-      stream->fs_counts--;
-    }
-  else
-    {
-      /* Nope, this is the last reference I have */
-
-      stream->fs_holder = -1;
-      stream->fs_counts = 0;
-      ASSERT(sem_post(&stream->fs_sem) == 0);
-    }
-}
-#endif /* CONFIG_STDIO_BUFFER_SIZE */