103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2016 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "nghttp2_rcbuf.h"
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#include <string.h>
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#include <assert.h>
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#include "nghttp2_mem.h"
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#include "nghttp2_helper.h"
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int nghttp2_rcbuf_new(nghttp2_rcbuf **rcbuf_ptr, size_t size,
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nghttp2_mem *mem) {
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uint8_t *p;
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p = nghttp2_mem_malloc(mem, sizeof(nghttp2_rcbuf) + size);
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if (p == NULL) {
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return NGHTTP2_ERR_NOMEM;
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}
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*rcbuf_ptr = (void *)p;
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(*rcbuf_ptr)->mem_user_data = mem->mem_user_data;
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(*rcbuf_ptr)->free = mem->free;
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(*rcbuf_ptr)->base = p + sizeof(nghttp2_rcbuf);
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(*rcbuf_ptr)->len = size;
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(*rcbuf_ptr)->ref = 1;
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return 0;
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}
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int nghttp2_rcbuf_new2(nghttp2_rcbuf **rcbuf_ptr, const uint8_t *src,
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size_t srclen, nghttp2_mem *mem) {
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int rv;
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rv = nghttp2_rcbuf_new(rcbuf_ptr, srclen + 1, mem);
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if (rv != 0) {
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return rv;
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}
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(*rcbuf_ptr)->len = srclen;
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*nghttp2_cpymem((*rcbuf_ptr)->base, src, srclen) = '\0';
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return 0;
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}
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/*
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* Frees |rcbuf| itself, regardless of its reference cout.
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*/
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void nghttp2_rcbuf_del(nghttp2_rcbuf *rcbuf) {
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nghttp2_mem_free2(rcbuf->free, rcbuf, rcbuf->mem_user_data);
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}
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void nghttp2_rcbuf_incref(nghttp2_rcbuf *rcbuf) {
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if (rcbuf->ref == -1) {
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return;
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}
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++rcbuf->ref;
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}
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void nghttp2_rcbuf_decref(nghttp2_rcbuf *rcbuf) {
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if (rcbuf == NULL || rcbuf->ref == -1) {
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return;
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}
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assert(rcbuf->ref > 0);
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if (--rcbuf->ref == 0) {
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nghttp2_rcbuf_del(rcbuf);
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}
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}
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nghttp2_vec nghttp2_rcbuf_get_buf(nghttp2_rcbuf *rcbuf) {
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nghttp2_vec res = {rcbuf->base, rcbuf->len};
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return res;
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}
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int nghttp2_rcbuf_is_static(const nghttp2_rcbuf *rcbuf) {
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return rcbuf->ref == -1;
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}
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