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#ifndef TARANTOOL_SIO_H_INCLUDED
#define TARANTOOL_SIO_H_INCLUDED
/*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* <COPYRIGHT HOLDER> OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/**
* Exception-aware wrappers around BSD sockets.
* Provide better error logging and I/O statistics.
*/
#include <stdbool.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <fcntl.h>
#include "exception.h"
enum { SERVICE_NAME_MAXLEN = 32 };
class SocketError: public SystemError {
public:
SocketError(const char *file, unsigned line, int fd,
const char *format, ...);
};
const char *sio_socketname(int fd);
int sio_socket(int domain, int type, int protocol);
int sio_shutdown(int fd, int how);
int sio_getfl(int fd);
int sio_setfl(int fd, int flag, int on);
void
sio_setsockopt(int fd, int level, int optname,
const void *optval, socklen_t optlen);
void
sio_getsockopt(int fd, int level, int optname,
void *optval, socklen_t *optlen);
int sio_connect(int fd, struct sockaddr_in *addr, socklen_t addrlen);
int sio_bind(int fd, struct sockaddr_in *addr, socklen_t addrlen);
int sio_listen(int fd);
int sio_listen_backlog();
int sio_accept(int fd, struct sockaddr_in *addr, socklen_t *addrlen);
ssize_t sio_read(int fd, void *buf, size_t count);
ssize_t sio_read_total(int fd, void *buf, size_t count, size_t total);
ssize_t sio_write(int fd, const void *buf, size_t count);
ssize_t sio_writev(int fd, const struct iovec *iov, int iovcnt);
ssize_t sio_write_total(int fd, const void *buf, size_t count, size_t total);
ssize_t sio_sendto(int fd, const void *buf, size_t len, int flags,
const struct sockaddr_in *dest_addr, socklen_t addrlen);
ssize_t sio_recvfrom(int fd, void *buf, size_t len, int flags,
struct sockaddr_in *src_addr, socklen_t *addrlen);
int sio_getpeername(int fd, struct sockaddr_in *addr);
const char *sio_strfaddr(struct sockaddr_in *addr);
/**
* Advance write position in the iovec array
* based on its current value and the number of
* bytes written.
*
* @param[in] iov the vector being written with writev().
* @param[in] nwr number of bytes written, @pre >= 0
* @param[in,out] iov_len offset in iov[0];
*
* @return offset of iov[0] for the next write
*/
static inline int
sio_move_iov(struct iovec *iov, ssize_t nwr, size_t *iov_len)
{
nwr += *iov_len;
struct iovec *begin = iov;
while (nwr > 0 && nwr >= iov->iov_len) {
nwr -= iov->iov_len;
iov++;
}
*iov_len = nwr;
return iov - begin;
}
/**
* Change values of iov->iov_len and iov->iov_base
* to adjust to a partial write.
*/
static inline void
sio_add_to_iov(struct iovec *iov, ssize_t size)
{
iov->iov_len += size;
iov->iov_base = (char *) iov->iov_base - size;
}
#endif /* TARANTOOL_SIO_H_INCLUDED */
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