138 lines
4.0 KiB
C++
138 lines
4.0 KiB
C++
#ifndef __WASABI_SINGLETON_H
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#define __WASABI_SINGLETON_H
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#include "api/service/waservicefactoryi.h"
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#include "api/service/services.h"
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template <class api_t, class impl_t>
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class Singleton : public waServiceFactoryI
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{
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public:
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Singleton() : impl( 0 ), orig( 0 ) {}
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Singleton( impl_t *new_impl, bool existing ) : impl( 0 ), orig( 0 )
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{
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if ( existing )
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Register( new_impl );
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else
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RegisterNew( new_impl );
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}
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Singleton( impl_t *&new_impl ) : impl( 0 ), orig( 0 ) { RegisterNew( new_impl ); }
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~Singleton() { Deregister(); }
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void Register( impl_t *new_impl )
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{
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impl = new_impl;
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WASABI_API_SVC->service_register( this );
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}
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void RegisterNew( impl_t *&new_impl )
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{
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if ( !new_impl )
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{
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orig = &new_impl;
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new_impl = new impl_t;
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}
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impl = new_impl;
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WASABI_API_SVC->service_register( this );
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}
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void Deregister()
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{
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if ( impl )
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{
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WASABI_API_SVC->service_deregister( this );
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if ( orig )
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{
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delete impl;
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*orig = 0;
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}
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impl = 0;
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}
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}
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impl_t *impl;
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impl_t **orig;
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FOURCC svc_serviceType() { return WaSvc::UNIQUE; } // TODO: make this a (defaulted) template parameter
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const char *svc_getServiceName() { return impl_t::getServiceName(); }
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GUID svc_getGuid() { return impl_t::getServiceGuid(); } // GUID per service factory, can be INVALID_GUID
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void *svc_getInterface( int global_lock = TRUE ) { return static_cast<api_t *>( impl ); }
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int svc_supportNonLockingGetInterface() { return TRUE; }
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int svc_releaseInterface( void *ifc ) { return 0; }
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CfgItem *svc_getCfgInterface() { return NULL; }
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const wchar_t *svc_getTestString() { return 0; }
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int svc_notify( int msg, int param1 = 0, int param2 = 0 ) { return 0; }
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};
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template <class api_t, class impl_t>
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class Singleton2 : public waServiceFactoryI
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{
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public:
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Singleton2() : impl( 0 ), orig( 0 ) {}
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Singleton2( impl_t *new_impl, bool existing ) : impl( 0 ), orig( 0 )
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{
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if ( existing )
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Register( new_impl );
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else
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RegisterNew( new_impl );
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}
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Singleton2( impl_t *&new_impl ) : impl( 0 ), orig( 0 ) { RegisterNew( new_impl ); }
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~Singleton2() { Deregister(); }
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void Register( impl_t *new_impl )
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{
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impl = new_impl;
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WASABI_API_SVC->service_register( this );
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}
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void RegisterNew( impl_t *&new_impl )
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{
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if ( !new_impl )
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{
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orig = &new_impl;
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new_impl = new impl_t;
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}
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impl = new_impl;
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WASABI_API_SVC->service_register( this );
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}
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void Deregister()
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{
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if ( impl )
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{
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WASABI_API_SVC->service_deregister( this );
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if ( orig )
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{
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delete impl;
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*orig = 0;
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}
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impl = 0;
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}
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}
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impl_t *impl;
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impl_t **orig;
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FOURCC svc_serviceType() { return WaSvc::UNIQUE; } // TODO: make this a (defaulted) template parameter
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const char *svc_getServiceName() { return impl_t::getServiceName(); }
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GUID svc_getGuid() { return impl_t::getServiceGuid(); } // GUID per service factory, can be INVALID_GUID
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void *svc_getInterface( int global_lock = TRUE ) { return static_cast<api_t *>( impl ); }
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int svc_supportNonLockingGetInterface() { return TRUE; }
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int svc_releaseInterface( void *ifc ) { return 0; }
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CfgItem *svc_getCfgInterface() { return NULL; }
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const wchar_t *svc_getTestString() { return 0; }
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int svc_notify( int msg, int param1 = 0, int param2 = 0 ) { return 0; }
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};
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#endif |