IPC_RETURN_TYPE IPC_queryNotify (const char *msgName,
unsigned int length, BYTE_ARRAY content,
HANDLER_TYPE handler, void *clientData)
{
MSG_PTR msg;
void *queryData;
IPC_VARCONTENT_TYPE vc;
if (!msgName || strlen(msgName) == 0) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
msg = x_ipc_msgFind(msgName);
if (msg == NULL) {
RETURN_ERROR(IPC_Message_Not_Defined);
} else if (ipcDataToSend(msg->msgData->msgFormat, msgName,
length, content, &queryData, &vc) != IPC_OK) {
PASS_ON_ERROR();
} else {
return ipcReturnValue(x_ipc_queryNotifySend(msg, msgName, queryData,
(REPLY_HANDLER_FN)handler,
clientData));
}
}
}
IPC_RETURN_TYPE IPC_publish (const char *msgName,
unsigned int length, BYTE_ARRAY content)
{
MSG_PTR msg;
CONST_FORMAT_PTR format;
void *dataToSend;
IPC_VARCONTENT_TYPE vc;
if (!msgName || strlen(msgName) == 0) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
msg = x_ipc_msgFind(msgName);
if (!msg) {
RETURN_ERROR(IPC_Message_Not_Defined);
} else {
format = msg->msgData->msgFormat;
if (ipcDataToSend(format, msgName, length, content, &dataToSend, &vc)
!= IPC_OK) {
PASS_ON_ERROR();
} else {
return ipcReturnValue(x_ipcBroadcast(msgName, dataToSend));
}
}
}
}
IPC_RETURN_TYPE _IPC_subscribe (const char *msgName, const char *hndName,
HANDLER_TYPE handler, void *clientData,
int autoUnmarshall)
{
HND_KEY_TYPE hndKey;
HND_PTR hnd;
if (!msgName || strlen(msgName) == 0) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
x_ipcRegisterHandler(msgName, hndName, handler);
/* Set the client data */
hndKey.num = 0; hndKey.str = hndName;
LOCK_CM_MUTEX;
hnd = GET_HANDLER(&hndKey);
UNLOCK_CM_MUTEX;
hnd->autoUnmarshall = autoUnmarshall;
if (hnd->isRegistered && hnd->clientData != NO_CLIENT_DATA) {
X_IPC_MOD_WARNING1("Resetting client data for handler %s\n", hndName);
}
hnd->isRegistered = TRUE;
hnd->clientData = clientData;
return IPC_OK;
}
}
IPC_RETURN_TYPE IPC_defineMsg (const char *msgName, unsigned int length,
const char *formatString)
{
char msgFormat[20];
if (!msgName || strlen(msgName) == 0) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} if (length != (unsigned int)IPC_VARIABLE_LENGTH && formatString != NULL &&
length != (unsigned int)x_ipc_dataStructureSize(ParseFormatString(formatString))) {
RETURN_ERROR(IPC_Mismatched_Formatter);
} else {
if (length == IPC_VARIABLE_LENGTH) {
sprintf(msgFormat, "{int, <byte:1>}");
} else if (length == 0) {
msgFormat[0] = '\0';
} else {
sprintf(msgFormat, "[byte:%d]", length);
}
x_ipcRegisterMessage(msgName, BroadcastClass, msgFormat, formatString);
return IPC_OK;
}
}
IPC_RETURN_TYPE IPC_respond (MSG_INSTANCE msgInstance, const char *msgName,
unsigned int length, BYTE_ARRAY content)
{
MSG_PTR msg;
void *replyData;
IPC_VARCONTENT_TYPE vc;
if (!msgName || strlen(msgName) == 0) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!msgInstance) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
msg = x_ipc_msgFind(msgName);
if (!msg) {
RETURN_ERROR(IPC_Message_Not_Defined);
} else if (ipcDataToSend(msg->msgData->msgFormat, msgName,
length, content, &replyData, &vc) != IPC_OK) {
PASS_ON_ERROR();
} else {
return ipcReturnValue(x_ipc_sendResponse(msgInstance, msg,
(char *)replyData,
ReplyClass, NULL,
msgInstance->responseSd));
}
}
}
IPC_RETURN_TYPE IPC_listen (unsigned int timeoutMSecs)
{
#ifndef IPC_ALLOW_DISCONNECTED_EVENT_HANDLING
if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
}
#endif
return ipcReturnValue(x_ipcHandleMessage(timeoutMSecs));
}
IPC_RETURN_TYPE _IPC_unsubscribe (const char *msgName, const char *hndName)
{
if (!msgName || strlen(msgName) == 0) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
x_ipcDeregisterHandler(msgName, hndName);
return IPC_OK;
}
}
int IPC_isMsgDefined (const char *msgName)
{
if (!msgName || strlen(msgName) == 0) {
ipcSetError(IPC_Null_Argument);
return FALSE;
} else if (!X_IPC_CONNECTED()) {
ipcSetError(IPC_Not_Connected);
return FALSE;
} else {
return x_ipcMessageRegistered(msgName);
}
}
int IPC_isModuleConnected (const char *moduleName)
{
if (!moduleName || strlen(moduleName) == 0) {
ipcSetError(IPC_Null_Argument); return -1;
} else if (!X_IPC_CONNECTED()) {
ipcSetError(IPC_Not_Connected); return -1;
} else {
int retVal;
x_ipcQuery(IPC_MODULE_CONNECTED_QUERY, &moduleName, &retVal);
return retVal;
}
}
IPC_RETURN_TYPE IPC_unsubscribeHandlerChange (const char *msgName,
CHANGE_HANDLE_TYPE handler)
{
if (!msgName || strlen(msgName) == 0) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
removeChange(msgName, handler);
return IPC_OK;
}
}
IPC_RETURN_TYPE IPC_unsubscribeDisconnect (CONNECT_HANDLE_TYPE handler)
{
if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
LOCK_CM_MUTEX;
removeConnect(GET_C_GLOBAL(disconnectNotifyList),
IPC_DISCONNECT_NOTIFY_MSG, handler);
UNLOCK_CM_MUTEX;
return IPC_OK;
}
}
IPC_RETURN_TYPE IPC_setCapacity (int capacity)
{
if (capacity < 1) {
RETURN_ERROR(IPC_Argument_Out_Of_Range);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
LOCK_M_MUTEX;
x_ipcRegisterResource(GET_M_GLOBAL(modNameGlobal), capacity);
UNLOCK_M_MUTEX;
return IPC_OK;
}
}
/* TNgo, 5/22/97, added another variable to this function
so that it can be called by IPC_connectModule */
IPC_RETURN_TYPE _IPC_connect (const char *taskName,
const char *serverName,
BOOLEAN willListen)
{
const char *serverHost;
char *colon = NULL;
int i, serverPort;
struct timeval wait;
/* Added by Bob Goode/Tam Ngo, 5/21/97, for WINSOCK option. */
#ifdef OS2
sock_init();
#elif defined(_WINSOCK_)
startWinsock();
#endif /* Winsock DLL loading */
if (ipcVerbosity > IPC_Silent) {
printf("NMP IPC Version %d.%d.%d (%s)\n",
IPC_VERSION_MAJOR, IPC_VERSION_MINOR, IPC_VERSION_MICRO,
IPC_VERSION_DATE);
}
/* Modified by TNgo, 5/22/97 */
serverHost = ((serverName != NULL && strlen(serverName) > 0)
? serverName : x_ipcServerMachine());
for (i=0; i<MAX_RECONNECT_TRIES; i++) {
if (i > 0 && ipcVerbosity > IPC_Silent)
printf(" Trying again %s to connect with the central server on %s\n",
taskName, serverHost);
IPC_initialize();
x_ipcWillListen(willListen);
x_ipcConnectModule(taskName, serverHost);
if (X_IPC_CONNECTED()) {
x_ipcWaitUntilReady();
if (ipcVerbosity > IPC_Silent) {
colon = (serverHost ? (char *)index((char *)serverHost, ':') : NULL);
serverPort = (colon == NULL ? SERVER_PORT : atoi(colon+1));
X_IPC_MOD_WARNING1("... IPC Connected on port %d\n", serverPort);
}
return IPC_OK;
} else {
/* Need to do this, rather than sleep, because of SIGALRM's */
wait.tv_sec = RECONNECT_WAIT; wait.tv_usec = 0;
select(0, 0, 0, 0, &wait);
}
}
/* At this point, we've been unable to connect */
RETURN_ERROR(IPC_Not_Connected);
}
IPC_RETURN_TYPE IPC_subscribeDisconnect (CONNECT_HANDLE_TYPE handler,
void *clientData)
{
if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
LOCK_CM_MUTEX;
insertConnect(&GET_C_GLOBAL(disconnectNotifyList),
IPC_DISCONNECT_NOTIFY_MSG, (X_IPC_HND_FN)ipcDisconnectHandler,
handler, clientData);
UNLOCK_CM_MUTEX;
return IPC_OK;
}
}
IPC_RETURN_TYPE IPC_setMsgQueueLength (const char *msgName, int queueLength)
{
MSG_PTR msg;
if (queueLength < 1) {
RETURN_ERROR(IPC_Argument_Out_Of_Range);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
msg = x_ipc_findOrRegisterMessage(msgName);
msg->limit = queueLength;
LOCK_M_MUTEX;
x_ipcLimitPendingMessages(msgName, GET_M_GLOBAL(modNameGlobal),
queueLength);
UNLOCK_M_MUTEX;
return IPC_OK;
}
}
IPC_RETURN_TYPE IPC_subscribeHandlerChange (const char *msgName,
CHANGE_HANDLE_TYPE handler,
void *clientData)
{
MSG_PTR msg;
if (!msgName || strlen(msgName) == 0) {
RETURN_ERROR(IPC_Null_Argument);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
msg = x_ipc_msgFind2(msgName, NULL);
if (!msg) {
RETURN_ERROR(IPC_Message_Not_Defined);
} else {
insertChange(msgName, handler, clientData);
return IPC_OK;
}
}
}
IPC_RETURN_TYPE IPC_setMsgPriority (const char *msgName, int priority)
{
SET_MSG_PRIORITY_TYPE setMsgData;
MSG_PTR msg;
if (priority < 0) {
RETURN_ERROR(IPC_Argument_Out_Of_Range);
} else if (!X_IPC_CONNECTED()) {
RETURN_ERROR(IPC_Not_Connected);
} else {
msg = x_ipc_findOrRegisterMessage(msgName);
msg->priority = priority;
setMsgData.msgName = (char*)msgName;
setMsgData.priority = priority;
return ipcReturnValue(x_ipcInform(IPC_SET_MSG_PRIORITY_INFORM,
&setMsgData));
}
}
int IPC_numHandlers (const char *msgName)
{
DIRECT_MSG_TYPE directInfo;
X_IPC_RETURN_VALUE_TYPE status;
int num;
if (!msgName || strlen(msgName) == 0) {
ipcSetError(IPC_Null_Argument); return -1;
} else if (!X_IPC_CONNECTED()) {
ipcSetError(IPC_Not_Connected); return -1;
} else {
status = x_ipcQueryCentral(X_IPC_DIRECT_MSG_QUERY, (void *)&msgName,
(void *)&directInfo);
if (status == Success) {
num = directInfo.numHandlers;
x_ipcFreeReply(X_IPC_DIRECT_MSG_QUERY, &directInfo);
} else {
num = 0;
}
return num;
}
}
/* Returns TRUE (1) if the module is currently connected to the IPC server */
int IPC_isConnected (void)
{
return X_IPC_CONNECTED();
}
