From 328ad0a41c6bdf596224ff2e9ab9c0fabde8634d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 09:32:08 +0200 Subject: Adding upstream version 0.8.0. Signed-off-by: Daniel Baumann --- lib/nghttp3_balloc.h | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 lib/nghttp3_balloc.h (limited to 'lib/nghttp3_balloc.h') diff --git a/lib/nghttp3_balloc.h b/lib/nghttp3_balloc.h new file mode 100644 index 0000000..e02f61d --- /dev/null +++ b/lib/nghttp3_balloc.h @@ -0,0 +1,92 @@ +/* + * 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 +#endif /* HAVE_CONFIG_H */ + +#include + +#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 */ -- cgit v1.2.3