mirror of https://github.com/nodejs/node.git
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/*
|
|
* nghttp3
|
|
*
|
|
* Copyright (c) 2022 nghttp3 contributors
|
|
* Copyright (c) 2022 ngtcp2 contributors
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
#ifndef NGHTTP3_BALLOC_H
|
|
#define NGHTTP3_BALLOC_H
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif /* HAVE_CONFIG_H */
|
|
|
|
#include <nghttp3/nghttp3.h>
|
|
|
|
#include "nghttp3_buf.h"
|
|
|
|
typedef struct nghttp3_memblock_hd nghttp3_memblock_hd;
|
|
|
|
/*
|
|
* nghttp3_memblock_hd is the header of memory block.
|
|
*/
|
|
struct nghttp3_memblock_hd {
|
|
nghttp3_memblock_hd *next;
|
|
};
|
|
|
|
/*
|
|
* nghttp3_balloc is a custom memory allocator. It allocates |blklen|
|
|
* bytes of memory at once on demand, and returns its slice when the
|
|
* allocation is requested.
|
|
*/
|
|
typedef struct nghttp3_balloc {
|
|
/* mem is the underlying memory allocator. */
|
|
const nghttp3_mem *mem;
|
|
/* blklen is the size of memory block. */
|
|
size_t blklen;
|
|
/* head points to the list of memory block allocated so far. */
|
|
nghttp3_memblock_hd *head;
|
|
/* buf wraps the current memory block for allocation requests. */
|
|
nghttp3_buf buf;
|
|
} nghttp3_balloc;
|
|
|
|
/*
|
|
* nghttp3_balloc_init initializes |balloc| with |blklen| which is the
|
|
* size of memory block.
|
|
*/
|
|
void nghttp3_balloc_init(nghttp3_balloc *balloc, size_t blklen,
|
|
const nghttp3_mem *mem);
|
|
|
|
/*
|
|
* nghttp3_balloc_free releases all allocated memory blocks.
|
|
*/
|
|
void nghttp3_balloc_free(nghttp3_balloc *balloc);
|
|
|
|
/*
|
|
* nghttp3_balloc_get allocates |n| bytes of memory and assigns its
|
|
* pointer to |*pbuf|.
|
|
*
|
|
* It returns 0 if it succeeds, or one of the following negative error
|
|
* codes:
|
|
*
|
|
* NGHTTP3_ERR_NOMEM
|
|
* Out of memory.
|
|
*/
|
|
int nghttp3_balloc_get(nghttp3_balloc *balloc, void **pbuf, size_t n);
|
|
|
|
/*
|
|
* nghttp3_balloc_clear releases all allocated memory blocks and
|
|
* initializes its state.
|
|
*/
|
|
void nghttp3_balloc_clear(nghttp3_balloc *balloc);
|
|
|
|
#endif /* NGHTTP3_BALLOC_H */
|