/*
* getConfig()
* Get Server Configuration
*/
static int getConfig (struct in_addr *pserver_addr, unsigned short *pserver_port)
{
long status;
long epics_port;
status = envGetLongConfigParam (&EPICS_IOC_LOG_PORT, &epics_port);
if (status<0) {
fprintf (stderr,
"iocLog: EPICS environment variable \"%s\" undefined\n",
EPICS_IOC_LOG_PORT.name);
return iocLogError;
}
if (epics_port<0 || epics_port>USHRT_MAX) {
fprintf (stderr,
"iocLog: EPICS environment variable \"%s\" out of range\n",
EPICS_IOC_LOG_PORT.name);
return iocLogError;
}
*pserver_port = (unsigned short) epics_port;
status = envGetInetAddrConfigParam (&EPICS_IOC_LOG_INET, pserver_addr);
if (status<0) {
fprintf (stderr,
"iocLog: EPICS environment variable \"%s\" undefined\n",
EPICS_IOC_LOG_INET.name);
return iocLogError;
}
return iocLogSuccess;
}
/*
* envGetInetPortConfigParam ()
*/
epicsShareFunc unsigned short epicsShareAPI envGetInetPortConfigParam
(const ENV_PARAM *pEnv, unsigned short defaultPort)
{
long longStatus;
long epicsParam;
longStatus = envGetLongConfigParam (pEnv, &epicsParam);
if (longStatus!=0) {
epicsParam = (long) defaultPort;
errlogPrintf ("EPICS Environment \"%s\" integer fetch failed\n", pEnv->name);
errlogPrintf ("setting \"%s\" = %ld\n", pEnv->name, epicsParam);
}
if (epicsParam<=IPPORT_USERRESERVED || epicsParam>USHRT_MAX) {
errlogPrintf ("EPICS Environment \"%s\" out of range\n", pEnv->name);
/*
* Quit if the port is wrong due coding error
*/
assert (epicsParam != (long) defaultPort);
epicsParam = (long) defaultPort;
errlogPrintf ("Setting \"%s\" = %ld\n", pEnv->name, epicsParam);
}
/*
* ok to clip to unsigned short here because we checked the range
*/
return (unsigned short) epicsParam;
}
casBufferFactory::casBufferFactory () :
smallBufFreeList ( 0 ), largeBufFreeList ( 0 ), largeBufferSizePriv ( 0u )
{
long maxBytesAsALong;
long status = envGetLongConfigParam ( & EPICS_CA_MAX_ARRAY_BYTES, & maxBytesAsALong );
if ( status || maxBytesAsALong < 0 ) {
errlogPrintf ( "cas: EPICS_CA_MAX_ARRAY_BYTES was not a positive integer\n" );
this->largeBufferSizePriv = MAX_TCP;
}
else {
/* allow room for the protocol header so that they get the array size they requested */
static const unsigned headerSize = sizeof ( caHdr ) + 2 * sizeof ( ca_uint32_t );
ca_uint32_t maxBytes = ( unsigned ) maxBytesAsALong;
if ( maxBytes < 0xffffffff - headerSize ) {
maxBytes += headerSize;
}
else {
maxBytes = 0xffffffff;
}
if ( maxBytes < MAX_TCP ) {
errlogPrintf ( "cas: EPICS_CA_MAX_ARRAY_BYTES was rounded up to %u\n", MAX_TCP );
this->largeBufferSizePriv = MAX_TCP;
}
else {
this->largeBufferSizePriv = maxBytes;
}
}
freeListInitPvt ( & this->smallBufFreeList, MAX_MSG_SIZE, 8 );
freeListInitPvt ( & this->largeBufFreeList, this->largeBufferSizePriv, 1 );
}
/*
*
* getConfig()
* Get Server Configuration
*
*
*/
static int getConfig(void)
{
int status;
char *pstring;
long param;
status = envGetLongConfigParam(
&EPICS_IOC_LOG_PORT,
¶m);
if(status>=0){
ioc_log_port = (unsigned short) param;
}
else {
ioc_log_port = 7004U;
}
status = envGetLongConfigParam(
&EPICS_IOC_LOG_FILE_LIMIT,
&ioc_log_file_limit);
if(status>=0){
if (ioc_log_file_limit<=0) {
envFailureNotify (&EPICS_IOC_LOG_FILE_LIMIT);
return IOCLS_ERROR;
}
}
else {
ioc_log_file_limit = 10000;
}
pstring = envGetConfigParam(
&EPICS_IOC_LOG_FILE_NAME,
sizeof ioc_log_file_name,
ioc_log_file_name);
if(pstring == NULL){
envFailureNotify(&EPICS_IOC_LOG_FILE_NAME);
return IOCLS_ERROR;
}
/*
* its ok to not specify the IOC_LOG_FILE_COMMAND
*/
pstring = envGetConfigParam(
&EPICS_IOC_LOG_FILE_COMMAND,
sizeof ioc_log_file_command,
ioc_log_file_command);
return IOCLS_OK;
}
/*
* Create a command-line context
*/
static void
osdReadlineBegin(struct readlineContext *context)
{
if (rlState == rlNone) {
epicsAtExit(rlExit, NULL);
rlState = rlIdle;
}
context->osd = &present;
if (context->in == NULL) {
long i = 50;
envGetLongConfigParam(&IOCSH_HISTSIZE, &i);
if (i < 0)
i = 0;
stifle_history(i);
rl_bind_key('\t', rl_insert);
}
}
//
// cac::cac ()
//
cac::cac (
epicsMutex & mutualExclusionIn,
epicsMutex & callbackControlIn,
cacContextNotify & notifyIn ) :
_refLocalHostName ( localHostNameCache.getReference () ),
programBeginTime ( epicsTime::getCurrent() ),
connTMO ( CA_CONN_VERIFY_PERIOD ),
mutex ( mutualExclusionIn ),
cbMutex ( callbackControlIn ),
ipToAEngine ( ipAddrToAsciiEngine::allocate () ),
timerQueue ( epicsTimerQueueActive::allocate ( false,
lowestPriorityLevelAbove(epicsThreadGetPrioritySelf()) ) ),
pUserName ( 0 ),
pudpiiu ( 0 ),
tcpSmallRecvBufFreeList ( 0 ),
tcpLargeRecvBufFreeList ( 0 ),
notify ( notifyIn ),
initializingThreadsId ( epicsThreadGetIdSelf() ),
initializingThreadsPriority ( epicsThreadGetPrioritySelf() ),
maxRecvBytesTCP ( MAX_TCP ),
maxContigFrames ( contiguousMsgCountWhichTriggersFlowControl ),
beaconAnomalyCount ( 0u ),
iiuExistenceCount ( 0u ),
cacShutdownInProgress ( false )
{
if ( ! osiSockAttach () ) {
throwWithLocation ( udpiiu :: noSocket () );
}
try {
long status;
/*
* Certain os, such as HPUX, do not unblock a socket system call
* when another thread asynchronously calls both shutdown() and
* close(). To solve this problem we need to employ OS specific
* mechanisms.
*/
epicsSignalInstallSigAlarmIgnore ();
epicsSignalInstallSigPipeIgnore ();
{
char tmp[256];
size_t len;
osiGetUserNameReturn gunRet;
gunRet = osiGetUserName ( tmp, sizeof (tmp) );
if ( gunRet != osiGetUserNameSuccess ) {
tmp[0] = '\0';
}
len = strlen ( tmp ) + 1;
this->pUserName = new char [ len ];
strncpy ( this->pUserName, tmp, len );
}
this->_serverPort =
envGetInetPortConfigParam ( &EPICS_CA_SERVER_PORT,
static_cast <unsigned short> (CA_SERVER_PORT) );
status = envGetDoubleConfigParam ( &EPICS_CA_CONN_TMO, &this->connTMO );
if ( status ) {
this->connTMO = CA_CONN_VERIFY_PERIOD;
epicsGuard < epicsMutex > cbGuard ( this->cbMutex );
errlogPrintf ( "EPICS \"%s\" double fetch failed\n", EPICS_CA_CONN_TMO.name );
errlogPrintf ( "Defaulting \"%s\" = %f\n", EPICS_CA_CONN_TMO.name, this->connTMO );
}
long maxBytesAsALong;
status = envGetLongConfigParam ( &EPICS_CA_MAX_ARRAY_BYTES, &maxBytesAsALong );
if ( status || maxBytesAsALong < 0 ) {
errlogPrintf ( "cac: EPICS_CA_MAX_ARRAY_BYTES was not a positive integer\n" );
}
else {
/* allow room for the protocol header so that they get the array size they requested */
static const unsigned headerSize = sizeof ( caHdr ) + 2 * sizeof ( ca_uint32_t );
ca_uint32_t maxBytes = ( unsigned ) maxBytesAsALong;
if ( maxBytes < 0xffffffff - headerSize ) {
maxBytes += headerSize;
}
else {
maxBytes = 0xffffffff;
}
if ( maxBytes < MAX_TCP ) {
errlogPrintf ( "cac: EPICS_CA_MAX_ARRAY_BYTES was rounded up to %u\n", MAX_TCP );
}
else {
this->maxRecvBytesTCP = maxBytes;
}
}
freeListInitPvt ( &this->tcpSmallRecvBufFreeList, MAX_TCP, 1 );
if ( ! this->tcpSmallRecvBufFreeList ) {
throw std::bad_alloc ();
}
freeListInitPvt ( &this->tcpLargeRecvBufFreeList, this->maxRecvBytesTCP, 1 );
if ( ! this->tcpLargeRecvBufFreeList ) {
throw std::bad_alloc ();
}
unsigned bufsPerArray = this->maxRecvBytesTCP / comBuf::capacityBytes ();
if ( bufsPerArray > 1u ) {
maxContigFrames = bufsPerArray *
contiguousMsgCountWhichTriggersFlowControl;
}
}
catch ( ... ) {
osiSockRelease ();
delete [] this->pUserName;
if ( this->tcpSmallRecvBufFreeList ) {
freeListCleanup ( this->tcpSmallRecvBufFreeList );
}
if ( this->tcpLargeRecvBufFreeList ) {
freeListCleanup ( this->tcpLargeRecvBufFreeList );
}
this->timerQueue.release ();
throw;
}
/*
* load user configured tcp name server address list,
* create virtual circuits, and add them to server table
*/
ELLLIST dest, tmpList;
ellInit ( & dest );
ellInit ( & tmpList );
addAddrToChannelAccessAddressList ( &tmpList, &EPICS_CA_NAME_SERVERS, this->_serverPort, false );
removeDuplicateAddresses ( &dest, &tmpList, 0 );
epicsGuard < epicsMutex > guard ( this->mutex );
while ( osiSockAddrNode *
pNode = reinterpret_cast < osiSockAddrNode * > ( ellGet ( & dest ) ) ) {
tcpiiu * piiu = NULL;
SearchDestTCP * pdst = new SearchDestTCP ( *this, pNode->addr );
this->registerSearchDest ( guard, * pdst );
bool newIIU = findOrCreateVirtCircuit (
guard, pNode->addr, cacChannel::priorityDefault,
piiu, CA_UKN_MINOR_VERSION, pdst );
free ( pNode );
if ( newIIU ) {
piiu->start ( guard );
}
}
}
/*
* rsrv_init ()
*/
int rsrv_init (void)
{
epicsThreadBooleanStatus tbs;
unsigned priorityOfConnectDaemon;
epicsThreadId tid;
long maxBytesAsALong;
long status;
clientQlock = epicsMutexMustCreate();
ellInit ( &clientQ );
freeListInitPvt ( &rsrvClientFreeList, sizeof(struct client), 8 );
freeListInitPvt ( &rsrvChanFreeList, sizeof(struct channel_in_use), 512 );
freeListInitPvt ( &rsrvEventFreeList, sizeof(struct event_ext), 512 );
freeListInitPvt ( &rsrvSmallBufFreeListTCP, MAX_TCP, 16 );
initializePutNotifyFreeList ();
status = envGetLongConfigParam ( &EPICS_CA_MAX_ARRAY_BYTES, &maxBytesAsALong );
if ( status || maxBytesAsALong < 0 ) {
errlogPrintf ( "CAS: EPICS_CA_MAX_ARRAY_BYTES was not a positive integer\n" );
rsrvSizeofLargeBufTCP = MAX_TCP;
}
else {
/* allow room for the protocol header so that they get the array size they requested */
static const unsigned headerSize = sizeof ( caHdr ) + 2 * sizeof ( ca_uint32_t );
ca_uint32_t maxBytes = ( unsigned ) maxBytesAsALong;
if ( maxBytes < 0xffffffff - headerSize ) {
maxBytes += headerSize;
}
else {
maxBytes = 0xffffffff;
}
if ( maxBytes < MAX_TCP ) {
errlogPrintf ( "CAS: EPICS_CA_MAX_ARRAY_BYTES was rounded up to %u\n", MAX_TCP );
rsrvSizeofLargeBufTCP = MAX_TCP;
}
else {
rsrvSizeofLargeBufTCP = maxBytes;
}
}
freeListInitPvt ( &rsrvLargeBufFreeListTCP, rsrvSizeofLargeBufTCP, 1 );
ellInit ( &beaconAddrList );
prsrv_cast_client = NULL;
pCaBucket = NULL;
castcp_startStopEvent = epicsEventMustCreate(epicsEventEmpty);
castcp_ctl = ctlPause;
/*
* go down two levels so that we are below
* the TCP and event threads started on behalf
* of individual clients
*/
tbs = epicsThreadHighestPriorityLevelBelow (
epicsThreadPriorityCAServerLow, &priorityOfConnectDaemon );
if ( tbs == epicsThreadBooleanStatusSuccess ) {
tbs = epicsThreadHighestPriorityLevelBelow (
priorityOfConnectDaemon, &priorityOfConnectDaemon );
if ( tbs != epicsThreadBooleanStatusSuccess ) {
priorityOfConnectDaemon = epicsThreadPriorityCAServerLow;
}
}
else {
priorityOfConnectDaemon = epicsThreadPriorityCAServerLow;
}
tid = epicsThreadCreate ( "CAS-TCP",
priorityOfConnectDaemon,
epicsThreadGetStackSize(epicsThreadStackMedium),
req_server, 0);
if ( tid == 0 ) {
epicsPrintf ( "CAS: unable to start connection request thread\n" );
}
epicsEventMustWait(castcp_startStopEvent);
return RSRV_OK;
}