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/*
* nghttp3
*
* Copyright (c) 2019 nghttp3 contributors
* Copyright (c) 2016 nghttp2 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.
*/
#include "nghttp3_rcbuf.h"
#include <assert.h>
#include "nghttp3_mem.h"
#include "nghttp3_str.h"
int nghttp3_rcbuf_new(nghttp3_rcbuf **rcbuf_ptr, size_t size,
const nghttp3_mem *mem) {
uint8_t *p;
p = nghttp3_mem_malloc(mem, sizeof(nghttp3_rcbuf) + size);
if (p == NULL) {
return NGHTTP3_ERR_NOMEM;
}
*rcbuf_ptr = (void *)p;
(*rcbuf_ptr)->mem = mem;
(*rcbuf_ptr)->base = p + sizeof(nghttp3_rcbuf);
(*rcbuf_ptr)->len = size;
(*rcbuf_ptr)->ref = 1;
return 0;
}
int nghttp3_rcbuf_new2(nghttp3_rcbuf **rcbuf_ptr, const uint8_t *src,
size_t srclen, const nghttp3_mem *mem) {
int rv;
uint8_t *p;
rv = nghttp3_rcbuf_new(rcbuf_ptr, srclen + 1, mem);
if (rv != 0) {
return rv;
}
(*rcbuf_ptr)->len = srclen;
p = (*rcbuf_ptr)->base;
if (srclen) {
p = nghttp3_cpymem(p, src, srclen);
}
*p = '\0';
return 0;
}
/*
* Frees |rcbuf| itself, regardless of its reference cout.
*/
void nghttp3_rcbuf_del(nghttp3_rcbuf *rcbuf) {
nghttp3_mem_free(rcbuf->mem, rcbuf);
}
void nghttp3_rcbuf_incref(nghttp3_rcbuf *rcbuf) {
if (rcbuf->ref == -1) {
return;
}
++rcbuf->ref;
}
void nghttp3_rcbuf_decref(nghttp3_rcbuf *rcbuf) {
if (rcbuf == NULL || rcbuf->ref == -1) {
return;
}
assert(rcbuf->ref > 0);
if (--rcbuf->ref == 0) {
nghttp3_rcbuf_del(rcbuf);
}
}
nghttp3_vec nghttp3_rcbuf_get_buf(const nghttp3_rcbuf *rcbuf) {
nghttp3_vec res = {rcbuf->base, rcbuf->len};
return res;
}
int nghttp3_rcbuf_is_static(const nghttp3_rcbuf *rcbuf) {
return rcbuf->ref == -1;
}
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