// static
int vrpn_Mutex_Remote::handle_initialize(void *userdata, vrpn_HANDLERPARAM p)
{
vrpn_Mutex_Remote *me = (vrpn_Mutex_Remote *)userdata;
const char *b = p.buffer;
// Only pay attention to the first initialize() message we get
// after startup.
if (me->d_myIndex != -1) {
return 0;
}
vrpn_int32 expected_payload_len =
2 * sizeof(vrpn_int32) + sizeof(vrpn_uint32);
if (p.payload_len != expected_payload_len) {
fprintf(stderr,
"vrpn_Mutex_Remote::handle_initialize: "
"Warning: Ignoring message with length %d, expected %d\n",
p.payload_len, expected_payload_len);
return 0;
}
vrpn_uint32 ip_addr;
vrpn_int32 pid;
vrpn_unbuffer(&b, &ip_addr);
vrpn_unbuffer(&b, &pid);
vrpn_int32 my_pid = 0;
#ifdef _WIN32
my_pid = _getpid();
#else
my_pid = getpid();
#endif
if ((ip_addr != getmyIP()) || (pid != my_pid)) {
fprintf(
stderr,
"vrpn_Mutex_Remote::handle_initialize: "
"Warning: Ignoring message that doesn't match ip/pid identifier\n");
#ifdef VERBOSE
fprintf(stderr, "Got %lu %d, expected %lu %d.\n", ip_addr, pid,
getmyIP(), my_pid);
#endif
return 0;
}
vrpn_unbuffer(&b, &(me->d_myIndex));
#ifdef VERBOSE
fprintf(stderr, "vrpn_Mutex_Remote::handle_initialize: "
"Got assigned index %d.\n",
me->d_myIndex);
#endif
if (me->d_requestBeforeInit) {
#ifdef VERBOSE
fprintf(stderr, "vrpn_Mutex_Remote::handle_initialize: "
"Sending request\n");
#endif
me->request();
}
return 0;
}
vrpn_PeerMutex::vrpn_PeerMutex(const char *name, vrpn_Connection *server)
: d_state(AVAILABLE)
, d_server(server)
, d_peer(NULL)
, d_numPeers(0)
, d_numConnectionsAllocated(0)
, d_myIP(getmyIP(NULL))
, d_myPort(0)
, d_holderIP(0)
, d_holderPort(-1)
, d_reqGrantedCB(NULL)
, d_reqDeniedCB(NULL)
, d_takeCB(NULL)
, d_releaseCB(NULL)
, d_peerData(NULL)
{
if (!name) {
fprintf(stderr, "vrpn_PeerMutex: NULL name!\n");
return;
}
if (server) {
d_server->addReference();
}
else {
fprintf(stderr, "vrpn_PeerMutex: NULL connection!\n");
return;
}
init(name);
}
void vrpn_Mutex_Remote::requestIndex(void)
{
timeval now;
vrpn_int32 buflen = sizeof(vrpn_int32) + sizeof(vrpn_uint32);
char *buf = NULL;
try { buf = new char[buflen]; }
catch (...) { return; }
char *bufptr = buf;
vrpn_int32 len = buflen;
vrpn_uint32 ip_addr = getmyIP();
#ifdef _WIN32
vrpn_int32 pid = _getpid();
#else
vrpn_int32 pid = getpid();
#endif
vrpn_buffer(&bufptr, &len, ip_addr);
vrpn_buffer(&bufptr, &len, pid);
#ifdef VERBOSE
printf("requesting index for %lu, %d\n", ip_addr, pid);
#endif
vrpn_gettimeofday(&now, NULL);
d_connection->pack_message(buflen, now, d_requestIndex_type, d_myId, buf,
vrpn_CONNECTION_RELIABLE);
try {
delete[] buf;
} catch (...) {
fprintf(stderr, "vrpn_Mutex_Remote::requestIndex(): delete failed\n");
return;
}
return;
}
vrpn_PeerMutex::vrpn_PeerMutex(const char *name, int port,
const char *NICaddress)
: d_state(AVAILABLE)
, d_server(NULL)
, d_peer(NULL)
, d_numPeers(0)
, d_numConnectionsAllocated(0)
, d_myIP(getmyIP(NICaddress))
, d_myPort(port)
, d_holderIP(0)
, d_holderPort(-1)
, d_reqGrantedCB(NULL)
, d_reqDeniedCB(NULL)
, d_takeCB(NULL)
, d_releaseCB(NULL)
, d_peerData(NULL)
{
if (!name) {
fprintf(stderr, "vrpn_PeerMutex: NULL name!\n");
return;
}
// XXX Won't work with non-IP connections (MPI, for example)
char con_name[512];
sprintf(con_name, "%s:%d", NICaddress, port);
d_server = vrpn_create_server_connection(con_name);
if (d_server) {
d_server->addReference();
d_server->setAutoDeleteStatus(true);
}
else {
fprintf(stderr, "vrpn_PeerMutex: "
"Couldn't open connection on port %d!\n",
port);
return;
}
init(name);
}
