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I want to implement event channels in two minios domains, DomA and DomB. DomA allocates the channel, DomB binds the channel to its local port and then sends a event. But DomA doesn't receive the event(maybe received but didn't handle the event). I want to know if i lost a procedure. Here is my code, main func in minios, and the two attachments are the printed results. Thanks.

int main()

{

sleep(1);

struct xs_handle *xs;

unsigned int domid, remote_dom;

evtchn_port_t local_port, remote_port;

/* Get a connection to the daemon */

xs = xs_daemon_open();

if(xs == NULL)

{

perror( "---> xs_deamon_open:" );

}

printf( "---> xs_deamon_open OK!\n" );

//get the current dom

domid = get_domid(xs);

int is_parent= domid % 2 == 0 ? 0 : 1;

if(is_parent == 1)

goto parent;

else

goto child;

parent:

printf( "---> I am first DomU!\n" );

//wait for next dom to start

sleep(30);

remote_dom = domid + 1;

//allocate a event channel

evtchn_alloc_unbound(remote_dom, evt_handler, NULL, &local_port);

printf("local port: %d\n", local_port);

//bind VCPU 0

evtchn_bind_vcpu_t bind_vcpu;

bind_vcpu.port = local_port;

bind_vcpu.vcpu = 0;

HYPERVISOR_event_channel_op(EVTCHNOP_bind_vcpu, &bind_vcpu);

//write_xenstore(domid, "evtchn_port", local_port);

//wait the event

while(1)

{

sleep(5);

}

return 0;

child:

printf( "---> I am child DomU!\n" );

remote_dom = domid - 1;

//wait the previous dom to allocate event channel

sleep(40);

//get the remote_port and bind the channel to local_port

//remote_port = read_xenstore(remote_dom, "evtchn_port");

remote_port = 5;

evtchn_bind_interdomain(remote_dom, remote_port, evt_handler, NULL, &local_port);

printf("local port: %d\n", local_port);

sleep(5);

//send the event

evtchn_send_t send;

send.port = local_port;

HYPERVISOR_event_channel_op(EVTCHNOP_send, &send);

printf("---> send the event\n");

while(1)

{

sleep(5);

}

return 0;

}

[Minios-devel] Implement event channels in two minios domains