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-rw-r--r--nuttx/sched/pthread_completejoin.c231
1 files changed, 0 insertions, 231 deletions
diff --git a/nuttx/sched/pthread_completejoin.c b/nuttx/sched/pthread_completejoin.c
deleted file mode 100644
index 7c5191034..000000000
--- a/nuttx/sched/pthread_completejoin.c
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@@ -1,231 +0,0 @@
-/************************************************************************
- * sched/pthread_completejoin.c
- *
- * Copyright (C) 2007, 2009, 2011 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 <sys/types.h>
-#include <stdbool.h>
-#include <pthread.h>
-#include <errno.h>
-#include <debug.h>
-
-#include "os_internal.h"
-#include "pthread_internal.h"
-
-/************************************************************************
- * Pre-processor Definitions
- ************************************************************************/
-
-/************************************************************************
- * Private Type Declarations
- ************************************************************************/
-
-/************************************************************************
- * Global Variables
- ************************************************************************/
-
-/************************************************************************
- * Private Variables
- ************************************************************************/
-
-/************************************************************************
- * Private Functions
- ************************************************************************/
-
-/************************************************************************
- * Name: pthread_notifywaiters
- *
- * Description:
- * Notify all other threads waiting in phread join for this thread's
- * exit data. This must be done by the child at child thread
- * destruction time.
- *
- ************************************************************************/
-
-static bool pthread_notifywaiters(FAR join_t *pjoin)
-{
- int ntasks_waiting;
- int status;
-
- svdbg("pjoin=0x%p\n", pjoin);
-
- /* Are any tasks waiting for our exit value? */
-
- status = sem_getvalue(&pjoin->exit_sem, &ntasks_waiting);
- if (status == OK && ntasks_waiting < 0)
- {
- /* Set the data semaphore so that this thread will be
- * awakened when all waiting tasks receive the data
- */
-
- (void)sem_init(&pjoin->data_sem, 0, (ntasks_waiting+1));
-
- /* Post the semaphore to restart each thread that is waiting
- * on the semaphore
- */
-
- do
- {
- status = pthread_givesemaphore(&pjoin->exit_sem);
- if (status == OK)
- {
- status = sem_getvalue(&pjoin->exit_sem, &ntasks_waiting);
- }
- }
- while (ntasks_waiting < 0 && status == OK);
-
- /* Now wait for all these restarted tasks to obtain the return
- * value.
- */
-
- (void)pthread_takesemaphore(&pjoin->data_sem);
- return true;
- }
-
- return false;
-}
-
-/************************************************************************
- * Public Functions
- ************************************************************************/
-
-/************************************************************************
- * Name: pthread_completejoin
- *
- * Description:
- * A thread has been terminated -- either by returning, calling
- * pthread_exit(), or through pthread_cancel(). In any event, we must
- * complete any pending join events.
- *
- * Parameters:
- * exit_value
- *
- * Returned Value:
- * OK unless there is no join information associated with the pid.
- * This could happen, for example, if a task started with task_create()
- * calls pthread_exit().
- *
- * Assumptions:
- *
- ************************************************************************/
-
-int pthread_completejoin(pid_t pid, FAR void *exit_value)
-{
- FAR join_t *pjoin;
-
- svdbg("pid=%d exit_value=%p\n", pid, exit_value);
-
- /* First, find thread's structure in the private data set. */
-
- (void)pthread_takesemaphore(&g_join_semaphore);
- pjoin = pthread_findjoininfo(pid);
- if (!pjoin)
- {
- sdbg("Could not find join info, pid=%d\n", pid);
- (void)pthread_givesemaphore(&g_join_semaphore);
- return ERROR;
- }
- else
- {
- bool waiters;
-
- /* Save the return exit value in the thread structure. */
-
- pjoin->terminated = true;
- pjoin->exit_value = exit_value;
-
- /* Notify waiters of the availability of the exit value */
-
- waiters = pthread_notifywaiters(pjoin);
-
- /* If there are no waiters and if the thread is marked as detached.
- * then discard the join information now. Otherwise, the pthread
- * join logic will call pthread_destroyjoin() when all of the threads
- * have sampled the exit value.
- */
-
- if (!waiters && pjoin->detached)
- {
- pthread_destroyjoin(pjoin);
- }
-
- /* Giving the following semaphore will allow the waiters
- * to call pthread_destroyjoin.
- */
-
- (void)pthread_givesemaphore(&g_join_semaphore);
- }
-
- return OK;
-}
-
-/************************************************************************
- * Name: pthread_destroyjoin
- *
- * Description:
- * This is called from pthread_completejoin if the join info was
- * detached or from pthread_join when the last waiting thread has
- * received the thread exit info.
- *
- * Or it may never be called if the join info was never detached or if
- * no thread ever calls pthread_join. In case, there is a memory leak!
- *
- * Assumptions:
- * The caller holds g_join_semaphore
- *
- ************************************************************************/
-
-void pthread_destroyjoin(FAR join_t *pjoin)
-{
- sdbg("pjoin=0x%p\n", pjoin);
-
- /* Remove the join info from the set of joins */
-
- (void)pthread_removejoininfo((pid_t)pjoin->thread);
-
- /* Destroy its semaphores */
-
- (void)sem_destroy(&pjoin->data_sem);
- (void)sem_destroy(&pjoin->exit_sem);
-
- /* And deallocate the pjoin structure */
-
- sched_free(pjoin);
-}
-
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