libdill: Structured Concurrency for C


ipc_accept_mem - accepts an incoming IPC connection


#include <libdill.h>

int ipc_accept_mem(
    int s,
    struct ipc_storage* mem,
    int64_t deadline);


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 accepts an incoming IPC connection.

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

s: Socket created by ipc_listen.

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

deadline: A point in time when the operation should time out, in milliseconds. Use the now function to get your current point in time. 0 means immediate timeout, i.e., perform the operation if possible or return without blocking if not. -1 means no deadline, i.e., the call will block forever if the operation cannot be performed.

The socket can be cleanly shut down using ipc_close function.

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


In case of success the function returns handle of the new connection. In case of error it returns -1 and sets errno to one of the values below.



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);


brecv(3) brecvl(3) bsend(3) bsendl(3) hclose(3) ipc_accept(3) ipc_close(3) ipc_connect(3) ipc_connect_mem(3) ipc_done(3) ipc_fromfd(3) ipc_fromfd_mem(3) ipc_listen(3) ipc_listen_mem(3) ipc_listener_fromfd(3) ipc_listener_fromfd_mem(3) ipc_pair(3) ipc_pair_mem(3) now(3)