Now that join info is in the task group, need to free when task group exits. Used to be stranded

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5603 42af7a65-404d-4744-a932-0658087f49c3

nuttx/sched/Makefile

@@ -146,7 +146,7 @@ PTHREAD_SRCS += pthread_barrierinit.c pthread_barrierdestroy.c pthread_barrierwa
 PTHREAD_SRCS += pthread_cancel.c pthread_setcancelstate.c
 PTHREAD_SRCS += pthread_keycreate.c pthread_setspecific.c pthread_getspecific.c pthread_keydelete.c
 PTHREAD_SRCS += pthread_initialize.c pthread_completejoin.c pthread_findjoininfo.c
-PTHREAD_SRCS += pthread_once.c pthread_setschedprio.c
+PTHREAD_SRCS += pthread_once.c pthread_release.c pthread_setschedprio.c
 
 ifneq ($(CONFIG_DISABLE_SIGNALS),y)
 PTHREAD_SRCS += pthread_condtimedwait.c pthread_kill.c pthread_sigmask.c

nuttx/sched/group_leave.c

@@ -154,10 +154,10 @@ static inline void group_release(FAR struct task_group_s *group)
   group_removechildren(group);
 #endif
 
-  /* Free pthread join data */
-
 #ifndef CONFIG_DISABLE_PTHREAD
-  (void)sem_destroy(&group->tg_joinsem);
+  /* Release pthread resources */
+
+  pthread_release(group);
 #endif
 
   /* Free all file-related resources now.  We really need to close files as

nuttx/sched/pthread_internal.h

@@ -101,6 +101,7 @@ void pthread_destroyjoin(FAR struct task_group_s *group,
                          FAR struct join_s *pjoin);
 FAR struct join_s *pthread_findjoininfo(FAR struct task_group_s *group,
                                         pid_t pid);
+void pthread_release(FAR struct task_group_s *group);
 int pthread_givesemaphore(sem_t *sem);
 int pthread_takesemaphore(sem_t *sem);
 

nuttx/sched/pthread_keydelete.c

@@ -81,7 +81,7 @@
  *   key = the key to delete
  *
  * Return Value:
- *   Always returns ENOSYSL.
+ *   Always returns ENOSYS.
  *
  * Assumptions:
  *

nuttx/sched/pthread_release.c

@@ -0,0 +1,123 @@
+/************************************************************************
+ * 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);
+}