libdill: Structured Concurrency for C

NAME

ipc_listen_mem - starts listening for incoming IPC connections

SYNOPSIS

#include <libdill.h>

int ipc_listen_mem(
    const char* addr,
    int backlog,
    struct ipc_listener_storage* mem);

DESCRIPTION

IPC protocol is a bytestream protocol for transporting data among processes on the same machine. It is an equivalent to POSIX AF_LOCAL sockets.

This function starts listening for incoming IPC connections. The connections can be accepted using ipc_accept function.

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

addr: The filename to listen on.

backlog: Maximum number of connections that can be kept open without accepting them.

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

The socket can be closed either by hclose or ipc_close. Both ways are equivalent.

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

RETURN VALUE

In case of success the function returns newly created socket. In case of error it returns -1 and sets errno to one of the values below.

ERRORS

EXAMPLE

int ls = ipc_listen("/tmp/test.ipc", 10);
int s = ipc_accept(ls, -1);
bsend(s, "ABC", 3, -1);
char buf[3];
brecv(s, buf, sizeof(buf), -1);
ipc_close(s);
ipc_close(ls);

SEE ALSO

brecv(3) brecvl(3) bsend(3) bsendl(3) hclose(3) ipc_accept(3) ipc_accept_mem(3) ipc_close(3) ipc_connect(3) ipc_connect_mem(3) ipc_done(3) ipc_listen(3) ipc_pair(3) ipc_pair_mem(3)