Move exit.c to task/exit.c

sched/Makefile

@@ -54,9 +54,6 @@ include clock/Make.defs
 include timer/Make.defs
 include environ/Make.defs
 
-# REVISIT
-TSK_SRCS += exit.c
-
 ASRCS =
 
 CSRCS  = $(INIT_SRCS) $(IRQ_SRCS) $(PG_SRCS) $(GRP_SRCS) $(SCHED_SRCS)

sched/task/Make.defs

@@ -37,6 +37,7 @@ TSK_SRCS  = task_create.c task_init.c task_setup.c task_activate.c
 TSK_SRCS += task_start.c task_delete.c task_exit.c task_exithook.c
 TSK_SRCS += task_recover.c task_restart.c task_spawn.c task_spawnparms.c
 TSK_SRCS += task_terminate.c task_getgroup.c task_prctl.c task_getpid.c
+TSK_SRCS += exit.c
 
 ifeq ($(CONFIG_ARCH_HAVE_VFORK),y)
 ifeq ($(CONFIG_SCHED_WAITPID),y)

sched/task/exit.c

@@ -0,0 +1,113 @@
+/****************************************************************************
+ * sched/exit.c
+ *
+ *   Copyright (C) 2007-2008, 2011-2012 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 <nuttx/config.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/fs/fs.h>
+
+#include "task/task.h"
+#include "sched/sched.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Type Declarations
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: exit
+ *
+ * Description:
+ *   The exit() function causes normal process termination and the value of
+ *   status & 0377 to be returned to the parent.
+ *
+ *   All functions registered with atexit() and on_exit() are called, in the
+ *   reverse order of their registration.
+ *
+ *   All open streams are flushed and closed.
+ *
+ ****************************************************************************/
+
+void exit(int status)
+{
+  struct tcb_s *tcb = (struct tcb_s*)g_readytorun.head;
+
+  /* Only the lower 8-bits of status are used */
+
+  status &= 0xff;
+
+  /* Perform common task termination logic.  This will get called again later
+   * through logic kicked off by _exit().  However, we need to call it before
+   * calling _exit() in order to handle atexit() and on_exit() callbacks and
+   * so that we can flush buffered I/O (both of which may required suspending).
+   */
+
+  task_exithook(tcb, status, false);
+
+  /* Then "really" exit.  Only the lower 8 bits of the exit status are used. */
+
+  _exit(status);
+}