/usr/include/mia-2.0/mia/core/factory.hh is in libmia-2.0-dev 2.0.13-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 | /* -*- mia-c++ -*-
*
* This file is part of MIA - a toolbox for medical image analysis
* Copyright (c) Leipzig, Madrid 1999-2013 Gert Wollny
*
* MIA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MIA; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef mia_core_factory_hh
#define mia_core_factory_hh
#include <iostream>
#include <memory>
#include <string>
#include <mia/core/handler.hh>
#include <mia/core/msgstream.hh>
#include <mia/core/errormacro.hh>
#include <mia/core/product_base.hh>
#include <mia/core/optionparser.hh>
#include <mia/core/productcache.hh>
#include <mia/core/traits.hh>
#include <mia/core/import_handler.hh>
NS_MIA_BEGIN
/**
\ingroup plugin
@brief This is tha base of all plugins that create "things", like filters, cost functions
time step operatores and the like.
This template is the model for all factory plugins, i.e. plugins that create certain objects.
\tparam P the object type created by the factory.
*/
template <typename P>
class EXPORT_HANDLER TFactory:
public TPlugin<typename P::plugin_data, typename P::plugin_type> {
public:
/// typedef to describe the product of the factory
typedef P Product;
/// typedef for the shared version of the product
typedef std::shared_ptr<P > SharedProduct;
/// typedef for the unique version of the product
typedef std::unique_ptr<P > UniqueProduct;
/** initialise the plugin by the names
\remark what are these names and types good for?
*/
TFactory(char const * const name);
/** This function creates the object handled by this plugin
It uses options to set its parameters and, if successfull,
sets the init string of the object to params and
returns the newly created object as a shared pointer.
@param options the options to initialise the plugin
@param params original parameter string
@returns an instance of the requested object
*/
virtual Product *create(const CParsedOptions& options, char const *params) __attribute__((warn_unused_result));
private:
virtual Product *do_create() const __attribute__((warn_unused_result)) = 0 ;
CMutex m_mutex;
};
/**
\ingroup plugin
@brief the Base class for all plugn handlers that deal with factory plugins.
Base class for all plugin handlers that are derived from TFactory.
*/
template <typename I>
class EXPORT_HANDLER TFactoryPluginHandler: public TPluginHandler< I > {
protected:
//! \name Constructors
//@{
/*! \brief Initializes the plugin handler
*/
TFactoryPluginHandler();
//@}
public:
/// The type of the the object this plug in hander produces
typedef typename I::Product Product;
/// The shared pointer type of the the object this plug in hander produces
typedef typename I::SharedProduct ProductPtr;
/// The unique pointer type of the the object this plug in hander produces
typedef typename I::UniqueProduct UniqueProduct;
/**
Create an object according to the given description. If creation fails, the function
will throw an invalid_argument exception
\param plugindescr the description of the plug-in
\returns a shared pointer containing the product of the plug-in according to the description
*/
ProductPtr produce(const std::string& plugindescr)const;
/// \overload produce(const std::string& plugindescr)
ProductPtr produce(const char *plugindescr) const{
return produce(std::string(plugindescr));
}
/**
Create an object according to the given description. If creation fails, the function
will throw an invalid_argument exception
\param plugindescr the description of the plug-in
\returns a unique pointer of the product of the plug-in according to the description
*/
UniqueProduct produce_unique(const std::string& plugindescr)const;
/// \overload produce(const std::string& plugindescr)
UniqueProduct produce_unique(const char *plugindescr) const{
return produce_unique(std::string(plugindescr));
}
/**
Sets whether the created shared pointer products should be cached.
Unique products will never be cached.
\param enable
*/
void set_caching(bool enable) const;
private:
std::string get_handler_type_string_and_help(std::ostream& os) const;
std::string do_get_handler_type_string() const;
typename I::Product *produce_raw(const std::string& plugindescr) const;
mutable TProductCache<ProductPtr> m_cache;
};
/*
Implementation of the factory
*/
template <typename I>
TFactory<I>::TFactory(char const * const name):
TPlugin<typename I::plugin_data, typename I::plugin_type>(name)
{
}
template <typename I>
typename TFactory<I>::Product *TFactory<I>::create(const CParsedOptions& options, char const *params)
{
CScopedLock lock(m_mutex);
try {
this->set_parameters(options);
this->check_parameters();
auto product = this->do_create();
if (product) {
product->set_module(this->get_module());
product->set_init_string(params);
}
return product;
}
catch (std::length_error& x) {
std::stringstream msg;
msg << "CParamList::set: Some string was not created properly\n";
msg << " options were:\n";
for (auto i = options.begin();
i != options.end(); ++i) {
msg << " " << i->first << "=" << i->second << "\n";
}
cverr() << msg.str();
throw std::logic_error("Probably a race condition");
}
}
template <typename I>
TFactoryPluginHandler<I>::TFactoryPluginHandler():
m_cache(this->get_descriptor())
{
set_caching(__cache_policy<I>::apply());
}
template <typename I>
void TFactoryPluginHandler<I>::set_caching(bool enable) const
{
cvdebug() << this->get_descriptor() << ":Set cache policy to " << enable << "\n";
m_cache.enable_write(enable);
}
template <typename I>
typename TFactoryPluginHandler<I>::ProductPtr
TFactoryPluginHandler<I>::produce(const std::string& plugindescr) const
{
auto result = m_cache.get(plugindescr);
if (!result) {
result.reset(this->produce_raw(plugindescr));
m_cache.add(plugindescr, result);
}else
cvdebug() << "Use cached '" << plugindescr << "'\n";
return result;
}
template <typename I>
typename TFactoryPluginHandler<I>::UniqueProduct
TFactoryPluginHandler<I>::produce_unique(const std::string& plugindescr) const
{
return UniqueProduct(this->produce_raw(plugindescr));
}
template <typename I>
std::string TFactoryPluginHandler<I>::get_handler_type_string_and_help(std::ostream& os) const
{
os << " The string value will be used to construct a plug-in.";
return do_get_handler_type_string();
}
template <typename I>
std::string TFactoryPluginHandler<I>::do_get_handler_type_string() const
{
return "factory";
}
template <typename I>
typename I::Product *TFactoryPluginHandler<I>::produce_raw(const std::string& params)const
{
if (params.empty()) {
throw create_exception<std::invalid_argument>("Factory ", this->get_descriptor(), ": Empty description string given. "
"Supported plug-ins are '", this->get_plugin_names(), "'. "
"Set description to 'help' for more information.");
}
CComplexOptionParser param_list(params);
if (param_list.size() < 1) {
throw create_exception<std::invalid_argument>( "Factory " , this->get_descriptor(), ": Description string '"
, params , "' can not be interpreted. "
"Supported plug-ins are '" , this->get_plugin_names() , "'. "
"Set description to 'help' for more information.");
}
cvdebug() << "TFactoryPluginHandler<P>::produce use '" << param_list.begin()->first << "'\n";
const std::string& factory_name = param_list.begin()->first;
if (factory_name == plugin_help) {
cvdebug() << "print help\n";
cvmsg() << "\n";
this->print_help(cverb);
return NULL;
}
cvdebug() << "TFactoryPluginHandler<>::produce: Create plugin from '" << factory_name << "'\n";
auto factory = this->plugin(factory_name.c_str());
if (!factory)
throw create_exception<std::invalid_argument>("Unable to find plugin for '", factory_name.c_str(), "'");
return factory->create(param_list.begin()->second,params.c_str());
}
/**
\ingroup plugin
Do some explicit instanciation for a plugin based on TFactory
*/
#define EXPLICIT_INSTANCE_PLUGIN(T) \
template class TPlugin<T::plugin_data, T::plugin_type>; \
template class TFactory<T>;
/**
\ingroup plugin
Do some explicit instanciation for a plugin based on TFactoryPluginHandler
*/
#define EXPLICIT_INSTANCE_PLUGIN_HANDLER(P) \
template class TPluginHandler<P>; \
template class TFactoryPluginHandler<P>; \
template class THandlerSingleton<TFactoryPluginHandler<P> >;
/**
\ingroup plugin
Do some explicit instanciation for the plugin classe and the handler of
a plugin based on TFactoryPluginHandler
*/
#define EXPLICIT_INSTANCE_HANDLER(T) \
template class TPlugin<T::plugin_data, T::plugin_type>; \
template class TFactory<T>; \
template class TPluginHandler<TFactory<T> >; \
template class TFactoryPluginHandler<TFactory<T> >; \
template class THandlerSingleton<TFactoryPluginHandler<TFactory<T> > >;
/**
\ingroup plugin
Do an explicit instanciation of plug-in classes and handlers for plugins that are
explicitely derived from TFactory.
*/
#define EXPLICIT_INSTANCE_DERIVED_FACTORY_HANDLER(T, F) \
template class TPlugin<T::plugin_data, T::plugin_type>; \
template class TFactory<T>; \
template class TPluginHandler<F>; \
template class TFactoryPluginHandler<F>; \
template class THandlerSingleton<TFactoryPluginHandler<F> >;
NS_MIA_END
#endif
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