Move task control files from sched/ to sched/task

1 files changed, 145 insertions, 0 deletions

diff --git a/nuttx/sched/task/task_start.c b/nuttx/sched/task/task_start.c
new file mode 100644
index 000000000..653e2794a
--- /dev/null
+++ b/nuttx/sched/task/task_start.c
@@ -0,0 +1,145 @@
+/****************************************************************************
+ * sched/task/task_start.c
+ *
+ *   Copyright (C) 2007-2010, 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 <stdlib.h>
+#include <sched.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/sched.h>
+
+#include "os_internal.h"
+#include "task/task.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Type Declarations
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: task_start
+ *
+ * Description:
+ *   This function is the low level entry point into the main thread of
+ *   execution of a task.  It receives initial control when the task is
+ *   started and calls main entry point of the newly started task.
+ *
+ * Inputs:
+ *   None
+ *
+ * Return:
+ *   None
+ *
+ ****************************************************************************/
+
+void task_start(void)
+{
+  FAR struct task_tcb_s *tcb = (FAR struct task_tcb_s*)g_readytorun.head;
+  int exitcode;
+  int argc;
+
+  DEBUGASSERT((tcb->cmn.flags & TCB_FLAG_TTYPE_MASK) != TCB_FLAG_TTYPE_PTHREAD);
+
+  /* Execute the start hook if one has been registered */
+
+#ifdef CONFIG_SCHED_STARTHOOK
+  if (tcb->starthook)
+    {
+      tcb->starthook(tcb->starthookarg);
+    }
+#endif
+
+  /* Count how many non-null arguments we are passing */
+
+  for (argc = 1; argc <= CONFIG_MAX_TASK_ARGS; argc++)
+    {
+      /* The first non-null argument terminates the list */
+
+      if (!tcb->argv[argc])
+        {
+          break;
+        }
+    }
+
+  /* Call the 'main' entry point passing argc and argv.  In the kernel build
+   * this has to be handled differently if we are starting a user-space task;
+   * we have to switch to user-mode before calling the task.
+   */
+
+#ifdef CONFIG_NUTTX_KERNEL
+  if ((tcb->cmn.flags & TCB_FLAG_TTYPE_MASK) != TCB_FLAG_TTYPE_KERNEL)
+    {
+      up_task_start(tcb->cmn.entry.main, argc, tcb->argv);
+      exitcode = EXIT_FAILURE; /* Should not get here */
+    }
+  else
+#endif
+    {
+      exitcode = tcb->cmn.entry.main(argc, tcb->argv);
+    }
+
+  /* Call exit() if/when the task returns */
+
+  exit(exitcode);
+}