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libwebsockets/lib/misc/lwsac/private.h
2019-01-15 06:59:48 +08:00

52 lines
1.7 KiB
C

/*
* libwebsockets - lws alloc chunk
*
* Copyright (C) 2018 Andy Green <andy@warmcat.com>
*
* 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:
* version 2.1 of the License.
*
* This library 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#if !defined(LWS_PLAT_OPTEE)
#include <sys/stat.h>
#endif
/* under page size of 4096 to allow overhead */
#define LWSAC_CHUNK_SIZE 4000
/*
* the chunk list members all point back to the head themselves so the list
* can be detached from the formal head and free itself when its reference
* count reaches zero.
*/
struct lwsac {
struct lwsac *next;
struct lwsac *head; /* pointer back to the first chunk */
struct lwsac *curr; /* applies to head chunk only */
size_t total_alloc_size; /* applies to head chunk only */
size_t alloc_size;
size_t ofs; /* next writeable position inside chunk */
int refcount; /* applies to head chunk only */
int total_blocks; /* applies to head chunk only */
char detached; /* if our refcount gets to zero, free the chunk list */
};
#if !defined(LWS_PLAT_OPTEE)
struct cached_file_info {
struct stat s;
time_t last_confirm;
};
#endif