+++ /dev/null
-/*
- * include/haprox/cbuf-t.h
- * This file contains definition for circular buffers.
- *
- * Copyright 2021 HAProxy Technologies, Frederic Lecaille <flecaille@haproxy.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation, version 2.1
- * exclusively.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef _HAPROXY_CBUF_T_H
-#define _HAPROXY_CBUF_T_H
-#ifdef USE_QUIC
-#ifndef USE_OPENSSL
-#error "Must define USE_OPENSSL"
-#endif
-#endif
-
-#include <stddef.h>
-#include <haproxy/list-t.h>
-
-extern struct pool_head *pool_head_cbuf;
-
-struct cbuf {
- /* buffer */
- unsigned char *buf;
- /* buffer size */
- size_t sz;
- /* Writer index */
- size_t wr;
- /* Reader index */
- size_t rd;
-};
-
-#endif /* _HAPROXY_CBUF_T_H */
+++ /dev/null
-/*
- * include/haprox/cbuf.h
- * This file contains definitions and prototypes for circular buffers.
- * Inspired from Linux circular buffers (include/linux/circ_buf.h).
- *
- * Copyright 2021 HAProxy Technologies, Frederic Lecaille <flecaille@haproxy.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation, version 2.1
- * exclusively.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef _HAPROXY_CBUF_H
-#define _HAPROXY_CBUF_H
-#ifdef USE_QUIC
-#ifndef USE_OPENSSL
-#error "Must define USE_OPENSSL"
-#endif
-#endif
-
-#include <haproxy/atomic.h>
-#include <haproxy/list.h>
-#include <haproxy/cbuf-t.h>
-
-struct cbuf *cbuf_new(unsigned char *buf, size_t sz);
-void cbuf_free(struct cbuf *cbuf);
-
-/* Amount of data between <rd> and <wr> */
-#define CBUF_DATA(wr, rd, size) (((wr) - (rd)) & ((size) - 1))
-
-/* Return the writer position in <cbuf>.
- * To be used only by the writer!
- */
-static inline unsigned char *cb_wr(struct cbuf *cbuf)
-{
- return cbuf->buf + cbuf->wr;
-}
-
-/* Reset the reader index.
- * To be used by a reader!
- */
-static inline void cb_rd_reset(struct cbuf *cbuf)
-{
- cbuf->rd = 0;
-}
-
-/* Reset the writer index.
- * To be used by a writer!
- */
-static inline void cb_wr_reset(struct cbuf *cbuf)
-{
- cbuf->wr = 0;
-}
-
-/* Increase <cbuf> circular buffer data by <count>.
- * To be used by a writer!
- */
-static inline void cb_add(struct cbuf *cbuf, size_t count)
-{
- cbuf->wr = (cbuf->wr + count) & (cbuf->sz - 1);
-}
-
-/* Return the reader position in <cbuf>.
- * To be used only by the reader!
- */
-static inline unsigned char *cb_rd(struct cbuf *cbuf)
-{
- return cbuf->buf + cbuf->rd;
-}
-
-/* Skip <count> byte in <cbuf> circular buffer.
- * To be used by a reader!
- */
-static inline void cb_del(struct cbuf *cbuf, size_t count)
-{
- cbuf->rd = (cbuf->rd + count) & (cbuf->sz - 1);
-}
-
-/* Return the amount of data left in <cbuf>.
- * To be used only by the writer!
- */
-static inline size_t cb_data(struct cbuf *cbuf)
-{
- size_t rd;
-
- rd = HA_ATOMIC_LOAD(&cbuf->rd);
- return CBUF_DATA(cbuf->wr, rd, cbuf->sz);
-}
-
-/* Return the amount of room left in <cbuf> minus 1 to distinguish
- * the case where the buffer is full from the case where is is empty
- * To be used only by the write!
- */
-static inline size_t cb_room(struct cbuf *cbuf)
-{
- size_t rd;
-
- rd = HA_ATOMIC_LOAD(&cbuf->rd);
- return CBUF_DATA(rd, cbuf->wr + 1, cbuf->sz);
-}
-
-/* Return the amount of contiguous data left in <cbuf>.
- * To be used only by the reader!
- */
-static inline size_t cb_contig_data(struct cbuf *cbuf)
-{
- size_t end, n;
-
- end = cbuf->sz - cbuf->rd;
- n = (HA_ATOMIC_LOAD(&cbuf->wr) + end) & (cbuf->sz - 1);
- return n < end ? n : end;
-}
-
-/* Return the amount of contiguous space left in <cbuf>.
- * To be used only by the writer!
- */
-static inline size_t cb_contig_space(struct cbuf *cbuf)
-{
- size_t end, n;
-
- end = cbuf->sz - 1 - cbuf->wr;
- n = (HA_ATOMIC_LOAD(&cbuf->rd) + end) & (cbuf->sz - 1);
- return n <= end ? n : end + 1;
-}
-
-#endif /* _HAPROXY_CBUF_H */
+++ /dev/null
-/*
- * Circular buffer management
- *
- * Copyright 2021 HAProxy Technologies, Frederic Lecaille <flecaill@haproxy.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation, version 2.1
- * exclusively.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <haproxy/list.h>
-#include <haproxy/pool.h>
-#include <haproxy/cbuf-t.h>
-
-DECLARE_POOL(pool_head_cbuf, "cbuf", sizeof(struct cbuf));
-
-/* Allocate and return a new circular buffer with <buf> as <sz> byte internal buffer
- * if succeeded, NULL if not.
- */
-struct cbuf *cbuf_new(unsigned char *buf, size_t sz)
-{
- struct cbuf *cbuf;
-
- cbuf = pool_alloc(pool_head_cbuf);
- if (cbuf) {
- cbuf->sz = sz;
- cbuf->buf = buf;
- cbuf->wr = 0;
- cbuf->rd = 0;
- }
-
- return cbuf;
-}
-
-/* Free QUIC ring <cbuf> */
-void cbuf_free(struct cbuf *cbuf)
-{
- if (!cbuf)
- return;
-
- pool_free(pool_head_cbuf, cbuf);
-}
-
-/*
- * Local variables:
- * c-indent-level: 8
- * c-basic-offset: 8
- * End:
- */
projects / thirdparty / haproxy.git / commitdiff
