ChannelProviderRegistry::shared_pointer getChannelProviderRegistry() {
static Mutex mutex;
Lock guard(mutex);
if(ChannelProviderRegistry.get()==0){
ChannelProviderRegistry.reset(new ChannelProviderRegistryImpl());
}
return ChannelProviderRegistry;
}
namespace pvAccess {
static ChannelProviderRegistry::shared_pointer ChannelProviderRegistry;
static Mutex channelProviderMutex;
typedef std::map<string, ChannelProviderFactory::shared_pointer> ChannelProviderFactoryMap;
static ChannelProviderFactoryMap channelProviders;
class ChannelProviderRegistryImpl : public ChannelProviderRegistry {
public:
ChannelProvider::shared_pointer getProvider(std::string const & _providerName) {
// TODO remove, here for backward compatibility
const string providerName = (_providerName == "pvAccess") ? "pva" : _providerName;
Lock guard(channelProviderMutex);
ChannelProviderFactoryMap::const_iterator iter = channelProviders.find(providerName);
if (iter != channelProviders.end())
return iter->second->sharedInstance();
else
return ChannelProvider::shared_pointer();
}
ChannelProvider::shared_pointer createProvider(std::string const & _providerName) {
// TODO remove, here for backward compatibility
const string providerName = (_providerName == "pvAccess") ? "pva" : _providerName;
Lock guard(channelProviderMutex);
ChannelProviderFactoryMap::const_iterator iter = channelProviders.find(providerName);
if (iter != channelProviders.end())
return iter->second->newInstance();
else
return ChannelProvider::shared_pointer();
}
std::auto_ptr<stringVector_t> getProviderNames() {
Lock guard(channelProviderMutex);
std::auto_ptr<stringVector_t> providers(new stringVector_t());
for (ChannelProviderFactoryMap::const_iterator i = channelProviders.begin();
i != channelProviders.end(); i++)
providers->push_back(i->first);
return providers;
}
};
ChannelProviderRegistry::shared_pointer getChannelProviderRegistry() {
static Mutex mutex;
Lock guard(mutex);
if(ChannelProviderRegistry.get()==0){
ChannelProviderRegistry.reset(new ChannelProviderRegistryImpl());
}
return ChannelProviderRegistry;
}
void registerChannelProviderFactory(ChannelProviderFactory::shared_pointer const & channelProviderFactory) {
Lock guard(channelProviderMutex);
channelProviders[channelProviderFactory->getFactoryName()] = channelProviderFactory;
}
void unregisterChannelProviderFactory(ChannelProviderFactory::shared_pointer const & channelProviderFactory) {
Lock guard(channelProviderMutex);
channelProviders.erase(channelProviderFactory->getFactoryName());
}
}}
void ServerContextImpl::initialize(ChannelProviderRegistry::shared_pointer const & channelProviderRegistry)
{
Lock guard(_mutex);
if (!channelProviderRegistry.get())
{
THROW_BASE_EXCEPTION("channelProviderRegistry == NULL");
}
if (_state == DESTROYED)
{
THROW_BASE_EXCEPTION("Context destroyed.");
}
else if (_state != NOT_INITIALIZED)
{
THROW_BASE_EXCEPTION("Context already initialized.");
}
_channelProviderRegistry = channelProviderRegistry;
// user all providers
if (_channelProviderNames == PVACCESS_ALL_PROVIDERS)
{
_channelProviderNames.resize(0); // VxWorks 5.5 omits clear()
std::auto_ptr<ChannelProviderRegistry::stringVector_t> names = _channelProviderRegistry->getProviderNames();
for (ChannelProviderRegistry::stringVector_t::iterator iter = names->begin(); iter != names->end(); iter++)
{
ChannelProvider::shared_pointer channelProvider = _channelProviderRegistry->getProvider(*iter);
if (channelProvider)
{
_channelProviders.push_back(channelProvider);
// compile a list
if (!_channelProviderNames.empty())
_channelProviderNames += ' ';
_channelProviderNames += *iter;
}
}
}
else
{
// split space separated names
std::stringstream ss(_channelProviderNames);
std::string providerName;
while (std::getline(ss, providerName, ' '))
{
ChannelProvider::shared_pointer channelProvider = _channelProviderRegistry->getProvider(providerName);
if (channelProvider)
_channelProviders.push_back(channelProvider);
}
}
//_channelProvider = _channelProviderRegistry->getProvider(_channelProviderNames);
if (_channelProviders.size() == 0)
{
std::string msg = "None of the specified channel providers are available: " + _channelProviderNames + ".";
THROW_BASE_EXCEPTION(msg.c_str());
}
internalInitialize();
_state = INITIALIZED;
}