/* check if the specified request is at the start of the list and should run */
static
int
check_request(NFS_BaseRequest *rq) {
if (list_null(NfsRequests)) {
dprintf(0, "!!! nfsfs: check_request NfsRequest list is null !!!\n");
return run_request(rq);
}
/* Check at head of queue */
NFS_BaseRequest *brq = (NFS_BaseRequest *) list_peek(NfsRequests);
if (brq != rq) {
return 0;
}
return run_request((NFS_BaseRequest *) list_peek(NfsRequests));
}
/* Run request at head of queue */
static
int
run_head_request(void) {
if (list_null(NfsRequests)) {
return 0;
}
return run_request((NFS_BaseRequest *) list_peek(NfsRequests));
}
void * request(DfaSet * dfaSet, state_name start_state, char * recipient_addr, state_machine_id recipient_machine_id, Message * message) {
StateMachine * initial_sm;
state_machine_id machine_id;
void * ret;
writelock(dfaSet->lock, 600);
initial_sm = allocSmash(dfaSet->smash);
if(initial_sm == NULL) {
return NULL;
}
assert(start_state != NULL_STATE);
if(message != NULL) {
memcpy(&(initial_sm->message), message, sizeof(Message));
}
initial_sm->current_state = start_state;
initial_sm->message.from_machine_id = initial_sm->machine_id;
initial_sm->message.to_machine_id = recipient_machine_id;
initial_sm->message.type = start_state;
char * initiator;
{
int err = asprintf(&initiator, "%s:%d", dfaSet->networkSetup.localhost, dfaSet->networkSetup.localport);
assert(err != -1);
}
strcpy(initial_sm->message.initiator, initiator);
free(initiator);
// printf("Set message initiator to %s\n", initial_sm->message.initiator); fflush(stdout);
initial_sm->message.initiator_machine_id = initial_sm->machine_id;
strcpy(initial_sm->message_recipient, recipient_addr);
machine_id = initial_sm->machine_id;
writeunlock(dfaSet->lock);
ret = run_request(dfaSet, machine_id);
writelock(dfaSet->lock, machine_id);
assert(initial_sm == getSmash(dfaSet->smash, machine_id));
if(message != NULL) {
memcpy(message, &(initial_sm->message), sizeof(Message));
}
freeSmash(dfaSet->smash, initial_sm->machine_id);
writeunlock(dfaSet->lock);
return ret;
}
