mirror of
https://gitee.com/openharmony/third_party_nghttp2
synced 2024-11-23 07:50:02 +00:00
eb306f463e
Add a `nghttp2_rcbuf_is_static()` method to tell whether a rcbuf is statically allocated. This can be useful for language bindings that wish to avoid creating duplicate strings for these buffers; concretely, I am planning to use this in the Node HTTP/2 module that is being introduced.
103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/*
|
|
* nghttp2 - HTTP/2 C Library
|
|
*
|
|
* Copyright (c) 2016 Tatsuhiro Tsujikawa
|
|
*
|
|
* 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 "nghttp2_rcbuf.h"
|
|
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#include "nghttp2_mem.h"
|
|
#include "nghttp2_helper.h"
|
|
|
|
int nghttp2_rcbuf_new(nghttp2_rcbuf **rcbuf_ptr, size_t size,
|
|
nghttp2_mem *mem) {
|
|
uint8_t *p;
|
|
|
|
p = nghttp2_mem_malloc(mem, sizeof(nghttp2_rcbuf) + size);
|
|
if (p == NULL) {
|
|
return NGHTTP2_ERR_NOMEM;
|
|
}
|
|
|
|
*rcbuf_ptr = (void *)p;
|
|
|
|
(*rcbuf_ptr)->mem_user_data = mem->mem_user_data;
|
|
(*rcbuf_ptr)->free = mem->free;
|
|
(*rcbuf_ptr)->base = p + sizeof(nghttp2_rcbuf);
|
|
(*rcbuf_ptr)->len = size;
|
|
(*rcbuf_ptr)->ref = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int nghttp2_rcbuf_new2(nghttp2_rcbuf **rcbuf_ptr, const uint8_t *src,
|
|
size_t srclen, nghttp2_mem *mem) {
|
|
int rv;
|
|
|
|
rv = nghttp2_rcbuf_new(rcbuf_ptr, srclen + 1, mem);
|
|
if (rv != 0) {
|
|
return rv;
|
|
}
|
|
|
|
(*rcbuf_ptr)->len = srclen;
|
|
*nghttp2_cpymem((*rcbuf_ptr)->base, src, srclen) = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Frees |rcbuf| itself, regardless of its reference cout.
|
|
*/
|
|
void nghttp2_rcbuf_del(nghttp2_rcbuf *rcbuf) {
|
|
nghttp2_mem_free2(rcbuf->free, rcbuf, rcbuf->mem_user_data);
|
|
}
|
|
|
|
void nghttp2_rcbuf_incref(nghttp2_rcbuf *rcbuf) {
|
|
if (rcbuf->ref == -1) {
|
|
return;
|
|
}
|
|
|
|
++rcbuf->ref;
|
|
}
|
|
|
|
void nghttp2_rcbuf_decref(nghttp2_rcbuf *rcbuf) {
|
|
if (rcbuf == NULL || rcbuf->ref == -1) {
|
|
return;
|
|
}
|
|
|
|
assert(rcbuf->ref > 0);
|
|
|
|
if (--rcbuf->ref == 0) {
|
|
nghttp2_rcbuf_del(rcbuf);
|
|
}
|
|
}
|
|
|
|
nghttp2_vec nghttp2_rcbuf_get_buf(nghttp2_rcbuf *rcbuf) {
|
|
nghttp2_vec res = {rcbuf->base, rcbuf->len};
|
|
return res;
|
|
}
|
|
|
|
int nghttp2_rcbuf_is_static(const nghttp2_rcbuf *rcbuf) {
|
|
return rcbuf->ref == -1;
|
|
}
|