1 files changed, 0 insertions, 142 deletions
diff --git a/nuttx/sched/sem_trywait.c b/nuttx/sched/sem_trywait.c
deleted file mode 100644
index cbd8dae69..000000000
--- a/nuttx/sched/sem_trywait.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/****************************************************************************
- * sched/sem_trywait.c
- *
- *   Copyright (C) 2007-2009 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 <stdbool.h>
-#include <semaphore.h>
-#include <sched.h>
-#include <errno.h>
-#include <nuttx/arch.h>
-
-#include "os_internal.h"
-#include "sem_internal.h"
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Type Declarations
- ****************************************************************************/
-
-/****************************************************************************
- * Global Variables
- ****************************************************************************/
-
-/****************************************************************************
- * Private Variables
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: sem_trywait
- *
- * Description:
- *   This function locks the specified semaphore only if the semaphore is
- *   currently not locked.  Otherwise, it locks the semaphore.  In either
- *   case, the call returns without blocking.
- *
- * Parameters:
- *   sem - the semaphore descriptor
- *
- * Return Value:
- *   0 (OK) or -1 (ERROR) if unsuccessful. If this function returns -1
- *   (ERROR),then the cause of the failure will be reported in "errno" as:
- *
- *     EINVAL:  Invalid attempt to get the semaphore
- *     EAGAIN:  The semaphore is not available.
- *
- * Assumptions:
- *
- ****************************************************************************/
-
-int sem_trywait(FAR sem_t *sem)
-{
-  FAR _TCB  *rtcb = (FAR _TCB*)g_readytorun.head;
-  irqstate_t saved_state;
-  int        ret = ERROR;
-
-  /* This API should not be called from interrupt handlers */
-
-  DEBUGASSERT(up_interrupt_context() == false)
-
-  /* Assume any errors reported are due to invalid arguments. */
-
-  set_errno(EINVAL);
-
-  if (sem)
-    {
-      /* The following operations must be performed with interrupts disabled
-       * because sem_post() may be called from an interrupt handler.
-       */
-
-      saved_state = irqsave();
-
-      /* Any further errors could only be occurred because the semaphore
-       * is not available.
-       */
-
-      set_errno(EAGAIN);
-
-      /* If the semaphore is available, give it to the requesting task */
-
-      if (sem->semcount > 0)
-        {
-          /* It is, let the task take the semaphore */
-
-          sem->semcount--;
-          rtcb->waitsem = NULL;
-          ret = OK;
-        }
-
-      /* Interrupts may now be enabled. */
-
-      irqrestore(saved_state);
-    }
-
-  return ret;
-}