1 files changed, 90 insertions, 0 deletions
diff --git a/nuttx/sched/sched_wait.c b/nuttx/sched/sched_wait.c
new file mode 100644
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+++ b/nuttx/sched/sched_wait.c
@@ -0,0 +1,90 @@
+/*****************************************************************************
+ * sched/sched_wait.c
+ *
+ *   Copyright (C) 2013 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/wait.h>
+#include <signal.h>
+#include <errno.h>
+
+#include <nuttx/sched.h>
+
+#include "os_internal.h"
+
+#if defined(CONFIG_SCHED_WAITPID) && defined(CONFIG_SCHED_HAVE_PARENT)
+
+/*****************************************************************************
+ * Private Functions
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Public Functions
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Name: wait
+ *
+ * Description:
+ *   The wait() function will suspend execution of the calling thread until
+ *   status information for one of its terminated child processes is
+ *   available, or until delivery of a signal whose action is either to
+ *   execute a signal-catching function or to terminate the process. If more
+ *   than one thread is suspended in wait() or waitpid() awaiting termination
+ *   of the same process, exactly one thread will return the process status
+ *   at the time of the target process termination. If status information is
+ *   available prior to the call to wait(), return will be immediate.
+ *
+ *   The waitpid() function will behave identically to wait(), if the pid
+ *   argument is (pid_t)-1 and the options argument is 0. Otherwise, its
+ *   behaviour will be modified by the values of the pid and options arguments.
+ *
+ * Input Parameters:
+ *   stat_loc - The location to return the exit status
+ *
+ * Returned Value:
+ *   See waitpid();
+ *
+ *****************************************************************************/
+
+pid_t wait(FAR int *stat_loc)
+{
+  return waitpid((pid_t)-1, stat_loc, 0);
+}
+
+#endif /* CONFIG_SCHED_WAITPID && CONFIG_SCHED_HAVE_PARENT*/