1 files changed, 123 insertions, 0 deletions
diff --git a/nuttx/sched/pthread_release.c b/nuttx/sched/pthread_release.c
new file mode 100644
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+++ b/nuttx/sched/pthread_release.c
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+/************************************************************************
+ * sched/pthread_release.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 <sched.h>
+#include <debug.h>
+
+#include "os_internal.h"
+#include "pthread_internal.h"
+
+/************************************************************************
+ * Definitions
+ ************************************************************************/
+
+/************************************************************************
+ * Private Type Declarations
+ ************************************************************************/
+
+/************************************************************************
+ * Global Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Public Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Name: pthread_release
+ *
+ * Description:
+ *   Release pthread resources from the task group with the group
+ *   terminated.
+ *
+ * Parameters:
+ *   group = The task group containing the pthread resources to be
+ *           released.
+ *
+ * Return Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ * POSIX Compatibility:
+ *
+ ************************************************************************/
+
+void pthread_release(FAR struct task_group_s *group)
+{
+  FAR struct join_s *join;
+
+  sdbg("group=0x%p\n", group);
+
+  /* Visit and delete each join structure still in the list.  Since we
+   * are last exiting thread of the group, no special protection should
+   * be required.
+   */
+
+  while (group->tg_joinhead)
+    {
+      /* Remove the join from the head of the list. */
+
+      join = group->tg_joinhead;
+      group->tg_joinhead = join->next;
+
+      /* Destroy the join semaphores */
+
+      (void)sem_destroy(&join->data_sem);
+      (void)sem_destroy(&join->exit_sem);
+
+      /* And deallocate the join structure */
+
+      sched_free(join);
+    }
+
+  /* Destroy the join list semaphore */
+
+  (void)sem_destroy(&group->tg_joinsem);
+}