ipc_listen_mem - starts listening for incoming IPC connections
#include <libdill.h> int ipc_listen_mem( const char* addr, int backlog, void* mem);
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 memory to store the newly created object. It must be at least IPC_LISTENER_SIZE bytes long and 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.
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.
int ls = ipc_listen("/tmp/test.ipc", 10); int s = ipc_accept(ls, -1); bsend(s, "ABC", 3, -1); char buf; brecv(s, buf, sizeof(buf), -1); ipc_close(s); ipc_close(ls);
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_listen(3) ipc_pair(3) ipc_pair_mem(3)