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diff --git a/nuttx/sched/group_internal.h b/nuttx/sched/group_internal.h
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+/****************************************************************************
+ * sched/group_internal.h
+ *
+ *   Copyright (C) 2007-2013 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.
+ *
+ ****************************************************************************/
+
+#ifndef __SCHED_GROUP_INERNAL_H
+#define __SCHED_GROUP_INERNAL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdbool.h>
+#include <queue.h>
+#include <sched.h>
+
+#include <nuttx/kmalloc.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Variables
+ ****************************************************************************/
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+/* Task group data structure management */
+
+#ifdef HAVE_TASK_GROUP
+int group_allocate(FAR _TCB *tcb);
+int group_initialize(FAR _TCB *tcb);
+int group_bind(FAR _TCB *tcb);
+int group_join(FAR _TCB *tcb);
+void group_leave(FAR _TCB *tcb);
+#ifndef CONFIG_DISABLE_SIGNALS
+int group_signal(FAR _TCB *tcb, FAR siginfo_t *info);
+#else
+# define group_signal(tcb,info) (0)
+#endif
+#else
+# define group_allocate(tcb)    (0)
+# define group_initialize(tcb)  (0)
+# define group_bind(tcb)        (0)
+# define group_join(tcb)        (0)
+# define group_leave(tcb)
+# define group_signal(tcb,info) (0)
+#endif /* HAVE_TASK_GROUP */
+
+/* Parent/child data management */
+
+#ifdef CONFIG_SCHED_HAVE_PARENT
+int task_reparent(pid_t ppid, pid_t chpid);
+
+#ifdef CONFIG_SCHED_CHILD_STATUS
+FAR struct child_status_s *task_allocchild(void);
+void task_freechild(FAR struct child_status_s *status);
+void task_addchild(FAR _TCB *tcb, FAR struct child_status_s *child);
+FAR struct child_status_s *task_exitchild(FAR _TCB *tcb);
+FAR struct child_status_s *task_findchild(FAR _TCB *tcb, pid_t pid);
+FAR struct child_status_s *task_removechild(FAR _TCB *tcb, pid_t pid);
+void task_removechildren(FAR _TCB *tcb);
+#endif
+#endif /* CONFIG_SCHED_HAVE_PARENT */
+
+#endif /* __SCHED_GROUP_INERNAL_H */