From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/sound/util_mem.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 include/sound/util_mem.h (limited to 'include/sound/util_mem.h') diff --git a/include/sound/util_mem.h b/include/sound/util_mem.h new file mode 100644 index 000000000000..9d2cdfa0c42a --- /dev/null +++ b/include/sound/util_mem.h @@ -0,0 +1,64 @@ +#ifndef __SOUND_UTIL_MEM_H +#define __SOUND_UTIL_MEM_H +/* + * Copyright (C) 2000 Takashi Iwai + * + * Generic memory management routines for soundcard memory allocation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +typedef struct snd_util_memblk snd_util_memblk_t; +typedef struct snd_util_memhdr snd_util_memhdr_t; +typedef unsigned int snd_util_unit_t; + +/* + * memory block + */ +struct snd_util_memblk { + snd_util_unit_t size; /* size of this block */ + snd_util_unit_t offset; /* zero-offset of this block */ + struct list_head list; /* link */ +}; + +#define snd_util_memblk_argptr(blk) (void*)((char*)(blk) + sizeof(snd_util_memblk_t)) + +/* + * memory management information + */ +struct snd_util_memhdr { + snd_util_unit_t size; /* size of whole data */ + struct list_head block; /* block linked-list header */ + int nblocks; /* # of allocated blocks */ + snd_util_unit_t used; /* used memory size */ + int block_extra_size; /* extra data size of chunk */ + struct semaphore block_mutex; /* lock */ +}; + +/* + * prototypes + */ +snd_util_memhdr_t *snd_util_memhdr_new(int memsize); +void snd_util_memhdr_free(snd_util_memhdr_t *hdr); +snd_util_memblk_t *snd_util_mem_alloc(snd_util_memhdr_t *hdr, int size); +int snd_util_mem_free(snd_util_memhdr_t *hdr, snd_util_memblk_t *blk); +int snd_util_mem_avail(snd_util_memhdr_t *hdr); + +/* functions without mutex */ +snd_util_memblk_t *__snd_util_mem_alloc(snd_util_memhdr_t *hdr, int size); +void __snd_util_mem_free(snd_util_memhdr_t *hdr, snd_util_memblk_t *blk); +snd_util_memblk_t *__snd_util_memblk_new(snd_util_memhdr_t *hdr, snd_util_unit_t units, struct list_head *prev); + +#endif /* __SOUND_UTIL_MEM_H */ -- cgit v1.2.3