diff options
Diffstat (limited to 'nuttx/sched/pthread_initialize.c')
| -rw-r--r-- | nuttx/sched/pthread_initialize.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/nuttx/sched/pthread_initialize.c b/nuttx/sched/pthread_initialize.c deleted file mode 100644 index 09db1d50e..000000000 --- a/nuttx/sched/pthread_initialize.c +++ /dev/null @@ -1,198 +0,0 @@ -/**************************************************************************** - * sched/pthread_initialize.c - * - * Copyright (C) 2007-2010 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 <stdint.h> -#include <semaphore.h> -#include <errno.h> - -#include "pthread_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/* This is the head of a private singly linked list. It - * is used to retain information about the spawned threads. - */ - -FAR join_t *g_pthread_head = NULL; -FAR join_t *g_pthread_tail = NULL; - -/* Mutually exclusive access to this data set is enforced with - * the following (un-named) semaphore. - */ - -sem_t g_join_semaphore; - -/* This keys track of the number of global keys that have been - * allocated. - */ - -uint8_t g_pthread_num_keys; - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: pthread_initialize - * - * Description: - * This is an internal OS function called only at power-up boot time. - * - * Parameters: - * None - * - * Return Value: - * None - * - * Assumptions: - * - ****************************************************************************/ - -void pthread_initialize(void) -{ - /* Initialize some global variables */ - - g_pthread_head = NULL; - g_pthread_tail = NULL; - g_pthread_num_keys = 0; - - /* Initialize the join semaphore to one (to support one-at- - * a-time access to private data sets). - */ - - (void)sem_init(&g_join_semaphore, 0, 1); -} - -/**************************************************************************** - * Name: pthread_takesemaphore and pthread_givesemaphore - * - * Description: - * Support managed access to the private data sets. - * - * Parameters: - * None - * - * Return Value: - * 0 on success or an ERROR on failure with errno value set to EINVAL. - * Note that the errno EINTR is never returned by this function. - * - * Assumptions: - * - ****************************************************************************/ - -int pthread_takesemaphore(sem_t *sem) -{ - /* Verify input parameters */ - - if (sem) - { - /* Take the semaphore */ - - while (sem_wait(sem) != OK) - { - /* Handle the special case where the semaphore wait was - * awakened by the receipt of a signal. - */ - - if (get_errno() != EINTR) - { - set_errno(EINVAL); - return ERROR; - } - } - return OK; - } - else - { - /* NULL semaphore pointer! */ - - set_errno(EINVAL); - return ERROR; - } -} - -int pthread_givesemaphore(sem_t *sem) -{ - /* Verify input parameters */ - - if (sem) - { - /* Give the semaphore */ - - if (sem_post(sem) == OK) - { - return OK; - } - else - { - /* sem_post() reported an error */ - - set_errno(EINVAL); - return ERROR; - } - } - else - { - /* NULL semaphore pointer! */ - - set_errno(EINVAL); - return ERROR; - } -} - |