void dbChannelExit(void)
{
freeListCleanup(dbChannelFreeList);
freeListCleanup(chFilterFreeList);
freeListCleanup(dbchStringFreeList);
dbChannelFreeList = chFilterFreeList = dbchStringFreeList = NULL;
}
cac::~cac ()
{
// this blocks until the UDP thread exits so that
// it will not sneak in any new clients
//
// lock intentionally not held here so that we dont deadlock
// waiting for the UDP thread to exit while it is waiting to
// get the lock.
{
epicsGuard < epicsMutex > cbGuard ( this->cbMutex );
epicsGuard < epicsMutex > guard ( this->mutex );
if ( this->pudpiiu ) {
this->pudpiiu->shutdown ( cbGuard, guard );
// make sure no new tcp circuits are created
this->cacShutdownInProgress = true;
//
// shutdown all tcp circuits
//
tsDLIter < tcpiiu > iter = this->circuitList.firstIter ();
while ( iter.valid() ) {
// this causes a clean shutdown to occur
iter->unlinkAllChannels ( cbGuard, guard );
iter++;
}
}
}
//
// wait for all tcp threads to exit
//
// this will block for oustanding sends to go out so dont
// hold a lock while waiting
//
{
epicsGuard < epicsMutex > guard ( this->mutex );
while ( this->iiuExistenceCount > 0 ) {
epicsGuardRelease < epicsMutex > unguard ( guard );
this->iiuUninstall.wait ();
}
}
if ( this->pudpiiu ) {
delete this->pudpiiu;
}
freeListCleanup ( this->tcpSmallRecvBufFreeList );
freeListCleanup ( this->tcpLargeRecvBufFreeList );
delete [] this->pUserName;
tsSLList < bhe > tmpBeaconList;
this->beaconTable.removeAll ( tmpBeaconList );
while ( bhe * pBHE = tmpBeaconList.get() ) {
pBHE->~bhe ();
this->bheFreeList.release ( pBHE );
}
this->timerQueue.release ();
this->ipToAEngine.release ();
// clean-up the list of un-notified msg objects
while ( msgForMultiplyDefinedPV * msg = this->msgMultiPVList.get() ) {
msg->~msgForMultiplyDefinedPV ();
this->mdpvFreeList.release ( msg );
}
errlogFlush ();
osiSockRelease ();
// its ok for channels and subscriptions to still
// exist at this point. The user created them and
// its his responsibility to clean them up.
}
//
// 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 );
}
}
}
static void dbndShutdown(void* ignore)
{
freeListCleanup(myStructFreeList);
}
static long dbReadCOM(DBBASE **ppdbbase,const char *filename, FILE *fp,
const char *path,const char *substitutions)
{
long status;
inputFile *pinputFile = NULL;
char *penv;
char **macPairs;
if(*ppdbbase == 0) *ppdbbase = dbAllocBase();
pdbbase = *ppdbbase;
if(path && strlen(path)>0) {
dbPath(pdbbase,path);
} else {
penv = getenv("EPICS_DB_INCLUDE_PATH");
if(penv) {
dbPath(pdbbase,penv);
} else {
dbPath(pdbbase,".");
}
}
my_buffer = dbCalloc(MY_BUFFER_SIZE,sizeof(char));
freeListInitPvt(&freeListPvt,sizeof(tempListNode),100);
if(substitutions) {
if(macCreateHandle(&macHandle,NULL)) {
epicsPrintf("macCreateHandle error\n");
status = -1;
goto cleanup;
}
macParseDefns(macHandle,(char *)substitutions,&macPairs);
if(macPairs ==NULL) {
macDeleteHandle(macHandle);
macHandle = NULL;
} else {
macInstallMacros(macHandle,macPairs);
free((void *)macPairs);
mac_input_buffer = dbCalloc(MY_BUFFER_SIZE,sizeof(char));
}
}
pinputFile = dbCalloc(1,sizeof(inputFile));
if(filename) {
pinputFile->filename = macEnvExpand(filename);
}
if(!fp) {
FILE *fp1;
if(pinputFile->filename) pinputFile->path = dbOpenFile(pdbbase,pinputFile->filename,&fp1);
if(!pinputFile->filename || !fp1) {
errPrintf(0,__FILE__, __LINE__,
"dbRead opening file %s",pinputFile->filename);
free((void *)pinputFile->filename);
free((void *)pinputFile);
status = -1;
goto cleanup;
}
pinputFile->fp = fp1;
} else {
pinputFile->fp = fp;
}
pinputFile->line_num = 0;
pinputFileNow = pinputFile;
my_buffer[0] = '\0';
my_buffer_ptr = my_buffer;
ellAdd(&inputFileList,&pinputFile->node);
status = pvt_yy_parse();
dbFreePath(pdbbase);
if(!status) { /*add RTYP and VERS as an attribute */
DBENTRY dbEntry;
DBENTRY *pdbEntry = &dbEntry;
long localStatus;
dbInitEntry(pdbbase,pdbEntry);
localStatus = dbFirstRecordType(pdbEntry);
while(!localStatus) {
localStatus = dbPutRecordAttribute(pdbEntry,"RTYP",
dbGetRecordTypeName(pdbEntry));
if(!localStatus) {
localStatus = dbPutRecordAttribute(pdbEntry,"VERS",
"none specified");
}
if(localStatus) {
fprintf(stderr,"dbPutRecordAttribute status %ld\n",status);
} else {
localStatus = dbNextRecordType(pdbEntry);
}
}
dbFinishEntry(pdbEntry);
}
cleanup:
if(macHandle) macDeleteHandle(macHandle);
macHandle = NULL;
if(mac_input_buffer) free((void *)mac_input_buffer);
mac_input_buffer = NULL;
if(freeListPvt) freeListCleanup(freeListPvt);
freeListPvt = NULL;
if(my_buffer) free((void *)my_buffer);
my_buffer = NULL;
freeInputFileList();
return(status);
}
casBufferFactory::~casBufferFactory ()
{
freeListCleanup ( this->smallBufFreeList );
freeListCleanup ( this->largeBufFreeList );
}
clientBufMemoryManager::~clientBufMemoryManager()
{
freeListCleanup ( this->smallBufFreeList );
}
