NAME

SYNOPSIS

#include <libdill.h>
int suffix_attach_mem(
    int s,
    const void* suffix,
    size_t suffixlen,
    struct suffix_storage* mem);

    

DESCRIPTION

This function instantiates SUFFIX protocol on top of the underlying protocol.

This function allows to avoid one dynamic memory allocation by storing the object in user-supplied memory. Unless you are hyper-optimizing use suffix_attach instead.

s: Handle of the underlying socket. It must be a bytestream protocol.

suffix: The delimiter byte sequence.

suffixlen: The size of the delimiter, in bytes.

mem: The structure to store the newly created object in. It must not be deallocated before the object is closed.

The socket can be cleanly shut down using suffix_detach function.

This function is not available if libdill is compiled with --disable-sockets option.

RETURN VALUE

ERRORS

•

EBADF: Invalid handle.

•

EMFILE: The maximum number of file descriptors in the process are already open.

•

ENFILE: The maximum number of file descriptors in the system are already open.

•

ENOMEM: Not enough memory.

•

ENOTSUP: The handle does not support this operation.

•

EPROTO: Underlying socket is not a bytestream socket.

EXAMPLE

        int s = tcp_connect(&addr, -1);
        s = suffix_attach(s, "
", 2);
        msend(s, "ABC", 3, -1);
        char buf[256];
        ssize_t sz = mrecv(s, buf, sizeof(buf), -1);
        s = suffix_detach(s, -1);
        tcp_close(s);

    

SEE ALSO