1 files changed, 0 insertions, 168 deletions
diff --git a/nuttx/sched/usleep.c b/nuttx/sched/usleep.c
deleted file mode 100644
index 893a420f4..000000000
--- a/nuttx/sched/usleep.c
+++ /dev/null
@@ -1,168 +0,0 @@
-/****************************************************************************
- * sched/usleep.c
- *
- *   Copyright (C) 2007, 2009, 2012 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 <sys/types.h>
-#include <unistd.h>
-#include <signal.h>
-#include <assert.h>
-#include <errno.h>
-
-/****************************************************************************
- * Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Type Declarations
- ****************************************************************************/
-
-/****************************************************************************
- * Global Variables
- ****************************************************************************/
-
-/****************************************************************************
- * Private Variables
- ****************************************************************************/
-
-/****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: usleep
- *
- * Description:
- *   The usleep() function will cause the calling thread to be suspended
- *   from execution until either the number of real-time microseconds
- *   specified by the argument 'usec' has elapsed or a signal is delivered
- *   to the calling thread. The suspension time may be longer than requested
- *   due to the scheduling of other activity by the system.
- *
- *   The 'usec' argument must be less than 1,000,000. If the value of
- *   'usec' is 0, then the call has no effect.
- *
- *   If a SIGALRM signal is generated for the calling process during
- *   execution of usleep() and if the SIGALRM signal is being ignored or
- *   blocked from delivery, it is unspecified whether usleep() returns
- *   when the SIGALRM signal is scheduled. If the signal is being blocked, it
- *   is also unspecified whether it remains pending after usleep() returns or
- *   it is discarded.
- *
- *   If a SIGALRM signal is generated for the calling process during
- *   execution of usleep(), except as a result of a prior call to alarm(),
- *   and if the SIGALRM signal is not being ignored or blocked from delivery,
- *   it is unspecified whether that signal has any effect other than causing
- *   usleep() to return.
- *
- *   If a signal-catching function interrupts usleep() and examines or changes
- *   either the time a SIGALRM is scheduled to be generated, the action
- *   associated with the SIGALRM signal, or whether the SIGALRM signal is
- *   blocked from delivery, the results are unspecified.
- *
- *   If a signal-catching function interrupts usleep() and calls siglongjmp()
- *   or longjmp() to restore an environment saved prior to the usleep() call,
- *   the action associated with the SIGALRM signal and the time at which a
- *   SIGALRM signal is scheduled to be generated are unspecified. It is also
- *   unspecified whether the SIGALRM signal is blocked, unless the process'
- *   signal mask is restored as part of the environment.
- *
- *   Implementations may place limitations on the granularity of timer values.
- *   For each interval timer, if the requested timer value requires a finer
- *   granularity than the implementation supports, the actual timer value will
- *   be rounded up to the next supported value. 
- *
- *   Interactions between usleep() and any of the following are unspecified:
- *
- *   nanosleep(), setitimer(), timer_create(), timer_delete(), timer_getoverrun(),
- *   timer_gettime(), timer_settime(), ualarm(), sleep()
-
- * Parameters:
- *   usec - the number of microseconds to wait.
- *
- * Returned Value:
- *   On successful completion, usleep() returns 0. Otherwise, it returns -1
- *   and sets errno to indicate the error. 
- *
- * Assumptions:
- *
- ****************************************************************************/
-
-int usleep(useconds_t usec)
-{
-  sigset_t set;
-  struct timespec ts;
-  struct siginfo value;
-  int errval;
-  int ret = 0;
-
-  if (usec)
-    {
-      /* Set up for the sleep.  Using the empty set means that we are not
-       * waiting for any particular signal.  However, any unmasked signal
-       * can still awaken sigtimedwait().
-       */
-
-      (void)sigemptyset(&set);
-      ts.tv_sec  = usec / 1000000;
-      ts.tv_nsec = (usec % 1000000) * 1000;
-
-      /* usleep is a simple application of sigtimedwait. */
-
-      ret = sigtimedwait(&set, &value, &ts);
-
-      /* sigtimedwait() cannot succeed.  It should always return error with
-       * either (1) EAGAIN meaning that the timeout occurred, or (2) EINTR
-       * meaning that some other unblocked signal was caught.
-       */
-
-      errval = errno;
-      DEBUGASSERT(ret < 0 && (errval == EAGAIN || errval == EINTR));
-      if (errval == EAGAIN)
-        {
-          /* The timeout "error" is the normal, successful result */
-
-          ret = 0;
-        }
-    }
-
-  return ret;
-}