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-rw-r--r--alsa-lib/src/shmarea.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/alsa-lib/src/shmarea.c b/alsa-lib/src/shmarea.c
deleted file mode 100644
index 071f9f3..0000000
--- a/alsa-lib/src/shmarea.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * IPC SHM area manager
- * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
- *
- * This library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as
- * published by the Free Software Foundation; either version 2.1 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include <stdio.h>
-#include <malloc.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/poll.h>
-#include <sys/mman.h>
-#include <sys/shm.h>
-#include "list.h"
-
-#ifndef DOC_HIDDEN
-struct snd_shm_area {
- struct list_head list;
- int shmid;
- void *ptr;
- int share;
-};
-#endif
-
-static LIST_HEAD(shm_areas);
-
-/**
- * \brief Create a shm area record
- * \param shmid IPC SHM ID
- * \param ptr the shared area pointer
- * \return The allocated shm area record, NULL if fail
- *
- * Allocates a shared area record with the given SHM ID and pointer.
- * The record has a reference counter, which is initialized to 1 by this function.
- */
-struct snd_shm_area *snd_shm_area_create(int shmid, void *ptr)
-{
- struct snd_shm_area *area = malloc(sizeof(*area));
- if (area) {
- area->shmid = shmid;
- area->ptr = ptr;
- area->share = 1;
- list_add_tail(&area->list, &shm_areas);
- }
- return area;
-}
-
-/**
- * \brief Increase the reference counter of shm area record
- * \param area shm area record
- * \return the shm area record (identical with the argument)
- *
- * Increases the reference counter of the given shared area record.
- */
-struct snd_shm_area *snd_shm_area_share(struct snd_shm_area *area)
-{
- if (area == NULL)
- return NULL;
- area->share++;
- return area;
-}
-
-/**
- * \brief Release the shared area record
- * \param area the shared are record
- * \return 0 if successful, or a negative error code
- *
- * Decreases the reference counter of the given shared area record, and
- * releases the resources automaticall if it reaches to 0.
- */
-int snd_shm_area_destroy(struct snd_shm_area *area)
-{
- if (area == NULL)
- return -ENOENT;
- if (--area->share)
- return 0;
- list_del(&area->list);
- shmdt(area->ptr);
- free(area);
- return 0;
-}
-
-void snd_shm_area_destructor(void) __attribute__ ((destructor));
-
-void snd_shm_area_destructor(void)
-{
- struct list_head *pos;
- struct snd_shm_area *area;
-
- list_for_each(pos, &shm_areas) {
- area = list_entry(pos, struct snd_shm_area, list);
- shmdt(area->ptr);
- }
-}