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// **********************************************************************
//
// Copyright (c) 2003-2007 ZeroC, Inc. All rights reserved.
//
// This copy of Ice-E is licensed to you under the terms described in the
// ICEE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceE/FactoryTableDef.h>
#include <IceE/UserExceptionFactory.h>
#ifdef __APPLE__
# include <dlfcn.h>
#endif
namespace IceInternal
{
FactoryTableWrapper factoryTableWrapper; // Single global instance of the wrapper object that
// initializes factoryTable.
ICE_API FactoryTableDef* factoryTable; // Single global instance of the factory table for
// non-local exceptions and non-abstract classes
}
//
// Add a factory to the exception factory table.
// If the factory is present already, increment its reference count.
//
void
IceInternal::FactoryTableDef::addExceptionFactory(const std::string& t, const IceInternal::UserExceptionFactoryPtr& f)
{
IceUtil::Mutex::Lock lock(_m);
EFTable::iterator i = _eft.find(t);
if(i == _eft.end())
{
_eft[t] = EFPair(f, 1);
}
else
{
i->second.second++;
}
}
//
// Return the exception factory for a given type ID
//
IceInternal::UserExceptionFactoryPtr
IceInternal::FactoryTableDef::getExceptionFactory(const std::string& t) const
{
IceUtil::Mutex::Lock lock(_m);
EFTable::const_iterator i = _eft.find(t);
#ifdef __APPLE__
if(i == _eft.end())
{
lock.release();
//
// Try to find the symbol, if found this should trigger the
// object static constructors to be called.
//
std::string symbol = "__F";
for(std::string::const_iterator p = t.begin(); p != t.end(); ++p)
{
symbol += ((*p) == ':') ? '_' : *p;
}
symbol += "__initializer";
dlsym(RTLD_DEFAULT, symbol.c_str());
lock.acquire();
i = _eft.find(t);
}
#endif
return i != _eft.end() ? i->second.first : IceInternal::UserExceptionFactoryPtr();
}
//
// Remove a factory from the exception factory table. If the factory
// is not present, do nothing; otherwise, decrement the factory's
// reference count; if the count drops to zero, remove the factory's
// entry from the table.
//
void
IceInternal::FactoryTableDef::removeExceptionFactory(const std::string& t)
{
IceUtil::Mutex::Lock lock(_m);
EFTable::iterator i = _eft.find(t);
if(i != _eft.end())
{
if(--i->second.second == 0)
{
_eft.erase(i);
}
}
}
//
// The code generated by slice2cpp contains a file static instance of FactoryTable.
// The constructor of FactoryTable calls initialize(), as does the constructor of
// FactoryTableWrapper. This ensures that the global factoryTable variable is initialized
// before it can be used, regardless of the order of initialization of global objects.
//
IceInternal::FactoryTableWrapper::FactoryTableWrapper()
{
initialize();
}
IceInternal::FactoryTableWrapper::~FactoryTableWrapper()
{
finalize();
}
//
// Initialize the single global instance of the factory table, counting
// the number of calls made.
//
void
IceInternal::FactoryTableWrapper::initialize()
{
IceUtil::StaticMutex::Lock lock(_m);
if(_initCount == 0)
{
factoryTable = new FactoryTableDef;
}
++_initCount;
}
//
// Delete the table if its reference count drops to zero.
//
void
IceInternal::FactoryTableWrapper::finalize()
{
IceUtil::StaticMutex::Lock lock(_m);
if(--_initCount == 0)
{
delete factoryTable;
}
}
IceUtil::StaticMutex IceInternal::FactoryTableWrapper::_m = ICE_STATIC_MUTEX_INITIALIZER;
int IceInternal::FactoryTableWrapper::_initCount = 0; // Initialization count
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