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Diffstat (limited to 'nuttx/lib/misc/lib_init.c')
| -rw-r--r-- | nuttx/lib/misc/lib_init.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/nuttx/lib/misc/lib_init.c b/nuttx/lib/misc/lib_init.c deleted file mode 100644 index 3403a837b..000000000 --- a/nuttx/lib/misc/lib_init.c +++ /dev/null @@ -1,207 +0,0 @@ -/************************************************************ - * lib/misc/lib_init.c - * - * Copyright (C) 2007, 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 <stdio.h> -#include <string.h> -#include <errno.h> - -#include <nuttx/kmalloc.h> -#include <nuttx/fs/fs.h> -#include <nuttx/lib.h> - -#include "lib_internal.h" - -/************************************************************ - * Definitions - ************************************************************/ - -/************************************************************ - * Private Variables - ************************************************************/ - -/************************************************************ - * Private Functions - ************************************************************/ - -/************************************************************ - * Public Functions - ************************************************************/ - -/************************************************************ - * lib_initialize - ************************************************************/ - -/* General library initialization hook */ - -void weak_const_function lib_initialize(void) -{ -} - -#if CONFIG_NFILE_STREAMS > 0 -/* The following function is called when a new TCB is allocated. It - * creates the streamlist instance that is stored in the TCB. - */ - -FAR struct streamlist *lib_alloclist(void) -{ - FAR struct streamlist *list; - list = (FAR struct streamlist*)lib_zalloc(sizeof(struct streamlist)); - if (list) - { - int i; - - /* Start with a reference count of one */ - - list->sl_crefs = 1; - - /* Initialize the list access mutex */ - - (void)sem_init(&list->sl_sem, 0, 1); - - /* Initialize each FILE structure */ - - for (i = 0; i < CONFIG_NFILE_STREAMS; i++) - { - /* Clear the IOB */ - - memset(&list->sl_streams[i], 0, sizeof(FILE)); - - /* Indicate not opened */ - - list->sl_streams[i].fs_filedes = -1; - - /* Initialize the stream semaphore to one to support one-at- - * a-time access to private data sets. - */ - - lib_sem_initialize(&list->sl_streams[i]); - } - } - return list; - -} - -/* This function is called when a TCB is closed (such as with - * pthread_create(). It increases the reference count on the stream - * list. - */ - -void lib_addreflist(FAR struct streamlist *list) -{ - if (list) - { - /* Increment the reference count on the list. - * NOTE: that we disable interrupts to do this - * (vs. taking the list semaphore). We do this - * because file cleanup operations often must be - * done from the IDLE task which cannot wait - * on semaphores. - */ - - register irqstate_t flags = irqsave(); - list->sl_crefs++; - irqrestore(flags); - } -} - -/* this function is called when a TCB is destroyed. Note that is - * does not close the file by release this inode. This happens - * separately when the file descriptor list is freed. - */ - -void lib_releaselist(FAR struct streamlist *list) -{ - int crefs; - if (list) - { - /* Decrement the reference count on the list. - * NOTE: that we disable interrupts to do this - * (vs. taking the list semaphore). We do this - * because file cleanup operations often must be - * done from the IDLE task which cannot wait - * on semaphores. - */ - - register irqstate_t flags = irqsave(); - crefs = --(list->sl_crefs); - irqrestore(flags); - - /* If the count decrements to zero, then there is no reference - * to the structure and it should be deallocated. Since there - * are references, it would be an error if any task still held - * a reference to the list's semaphore. - */ - - if (crefs <= 0) - { -#if CONFIG_STDIO_BUFFER_SIZE > 0 - int i; -#endif - /* Destroy the semaphore and release the filelist */ - - (void)sem_destroy(&list->sl_sem); - - /* Release each stream in the list */ - -#if CONFIG_STDIO_BUFFER_SIZE > 0 - for (i = 0; i < CONFIG_NFILE_STREAMS; i++) - { - /* Destroy the semaphore that protects the IO buffer */ - - (void)sem_destroy(&list->sl_streams[i].fs_sem); - - /* Release the IO buffer */ - if (list->sl_streams[i].fs_bufstart) - { - sched_free(list->sl_streams[i].fs_bufstart); - } - } -#endif - /* Finally, release the list itself */ - - sched_free(list); - } - } -} - -#endif /* CONFIG_NFILE_STREAMS */ - - |