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GetFEM: src/getfem/dal_static_stored_objects.h Source File
GetFEM  5.4.2
dal_static_stored_objects.h
Go to the documentation of this file.
1 /* -*- c++ -*- (enables emacs c++ mode) */
2 /*===========================================================================
3 
4  Copyright (C) 2002-2020 Yves Renard
5 
6  This file is a part of GetFEM
7 
8  GetFEM is free software; you can redistribute it and/or modify it
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30 ===========================================================================*/
31 
32 /** @file dal_static_stored_objects.h
33 @author Yves Renard <Yves.Renard@insa-lyon.fr>
34 @date February 19, 2005
35 @brief Stores interdependent getfem objects.
36 
37 Stored object :
38 
39 A type of object to be stored should derive from
40 dal::static_stored_object and a key should inherit from
41 static_stored_object_key with an overloaded "compare" method.
42 
43 To store a new object, you have to test if the object is not
44 already stored and then call dal::add_stored_object:
45 @code
46 pstatic_stored_object_key p = make_shared<your_object_key>(parameters);
47 if (!search_stored_object(p)) {
48 add_stored_object(p, make_shared<your_object>(parameters));
49 }
50 @endcode
51 You can add a dependency of your new object with
52 @code
53 add_dependency(pointer_on_your_object,
54 pointer_on_the_object_object_from_which_it_depends);
55 @endcode
56 and then your object will be automatically deleted if the second object is
57 deleted.
58 The dependency can be added within the add_stored_object call:
59 @code
60 add_stored_object(new your_object_key(parameters),
61 new your_object(parameters),
62 dependency);
63 @endcode
64 
65 std::shared_ptr are used.
66 */
67 #ifndef DAL_STATIC_STORED_OBJECTS_H__
68 #define DAL_STATIC_STORED_OBJECTS_H__
69 
70 #include "dal_config.h"
71 #include "getfem_omp.h"
72 #include <algorithm>
73 #include "dal_singleton.h"
74 #include <set>
75 #include <list>
76 
77 
78 #include "getfem/getfem_arch_config.h"
79 
80 #include <atomic>
81 
82 #define DAL_STORED_OBJECT_DEBUG 0
83 
84 namespace dal {
85 
86 
87 #if DAL_STORED_OBJECT_DEBUG
88 // Little tool for debug : detects the deleted static stored objects for
89 // which the destructor is not called (i.e. a shared pointer is still stored
90 // somewhere. Not thread safe.
91 // Rule : Each potential stored object should called
92 // DAL_STORED_OBJECT_DEBUG_CREATED(this, "name") in the constructor and
93 // DAL_STORED_OBJECT_DEBUG_DESTROYED(this) in the destructor.
94  class static_stored_object;
95  void stored_debug_created(const static_stored_object *o,
96  const std::string &name);
97  void stored_debug_added(const static_stored_object *o);
98  void stored_debug_deleted(const static_stored_object *o);
99  void stored_debug_destroyed(const static_stored_object *o,
100  const std::string &name);
101 # define DAL_STORED_OBJECT_DEBUG_CREATED(o, name) stored_debug_created(o, name)
102 # define DAL_STORED_OBJECT_DEBUG_ADDED(o) stored_debug_added(o)
103 # define DAL_STORED_OBJECT_DEBUG_DELETED(o) stored_debug_deleted(o)
104 # define DAL_STORED_OBJECT_DEBUG_DESTROYED(o, name) \
105  stored_debug_destroyed(o, name)
106 #else
107 # define DAL_STORED_OBJECT_DEBUG_CREATED(o, name)
108 # define DAL_STORED_OBJECT_DEBUG_ADDED(o)
109 # define DAL_STORED_OBJECT_DEBUG_DELETED(o)
110 # define DAL_STORED_OBJECT_DEBUG_DESTROYED(o, name)
111 #endif
112 
113  enum permanence { PERMANENT_STATIC_OBJECT = 0, // not deletable object
114  STRONG_STATIC_OBJECT = 1, // preferable not to delete it
115  STANDARD_STATIC_OBJECT = 2, // standard
116  WEAK_STATIC_OBJECT = 3, // delete it if necessary
117  AUTODELETE_STATIC_OBJECT = 4 // automatically deleted
118  // when the last dependent object is deleted
119  };
120 
121  class static_stored_object_key {
122  protected :
123  virtual bool compare(const static_stored_object_key &) const = 0;
124  virtual bool equal(const static_stored_object_key &) const = 0;
125 
126  public :
127  bool operator < (const static_stored_object_key &o) const {
128  // comparaison des noms d'objet
129  if (typeid(*this).before(typeid(o))) return true;
130  if (typeid(o).before(typeid(*this))) return false;
131  return compare(o);
132  }
133 
134  bool operator == (const static_stored_object_key &o) const {
135  if (typeid(o)!=typeid(*this)) return false;
136  return equal(o);
137  }
138 
139  bool operator != (const static_stored_object_key &o) const {
140  return !(*this == o);
141  }
142 
143  virtual ~static_stored_object_key() {}
144  };
145 
146  template <typename var_type>
147  class simple_key : virtual public static_stored_object_key {
148  var_type a;
149  public :
150  bool compare(const static_stored_object_key &oo) const override {
151  auto &o = dynamic_cast<const simple_key &>(oo);
152  return a < o.a;
153  }
154 
155  bool equal(const static_stored_object_key &oo) const override {
156  auto &o = dynamic_cast<const simple_key &>(oo);
157  return a == o.a;
158  }
159  simple_key(var_type aa) : a(aa) {}
160  };
161 
162 #define DAL_SIMPLE_KEY(class_name, var_type) \
163  struct class_name : public dal::simple_key<var_type> { \
164  class_name(var_type aa) : dal::simple_key<var_type>(aa) {} \
165  }
166 
167 #define DAL_DOUBLE_KEY(class_name, var_type1, var_type2) \
168  struct class_name : \
169  public dal::simple_key<std::pair<var_type1,var_type2> > { \
170  class_name(var_type1 aa, var_type2 bb) : \
171  dal::simple_key<std::pair<var_type1,var_type2> > \
172  (std::make_pair(aa,bb)) {} \
173  }
174 
175 #define DAL_TRIPLE_KEY(class_name, var_type1, var_type2, var_type3) \
176  struct class_name : \
177  public dal::simple_key<std::pair<var_type1, \
178  std::pair<var_type2,var_type3> > > { \
179  class_name(var_type1 aa, var_type2 bb, var_type3 cc) : \
180  dal::simple_key<std::pair<var_type1, \
181  std::pair<var_type2, var_type3> > > \
182  (std::make_pair(aa,std::make_pair(bb,cc))) {} \
183  }
184 
185 #define DAL_FOUR_KEY(class_name,var_type1,var_type2,var_type3,var_type4)\
186  struct class_name : public \
187  dal::simple_key<std::pair \
188  <var_type1, std::pair<var_type2, std::pair \
189  <var_type3,var_type4> > > > { \
190  class_name(var_type1 aa, var_type2 bb, var_type3 cc,var_type4 dd) : \
191  dal::simple_key<std::pair \
192  <var_type1, std::pair<var_type2, \
193  std::pair<var_type3, \
194  var_type4> > > > \
195  (std::make_pair(aa,std::make_pair(bb,std::make_pair(cc, dd)))) {} \
196  }
197 
198 
199  typedef std::shared_ptr<const static_stored_object_key>
200  pstatic_stored_object_key;
201 
202 
203  /**
204  base class for static stored objects
205  */
206  class static_stored_object { public : virtual ~static_stored_object() {} };
207 
208  typedef std::shared_ptr<const static_stored_object> pstatic_stored_object;
209 
210  pstatic_stored_object_key key_of_stored_object(pstatic_stored_object o);
211 
212  /** Gives a pointer to an object from a key pointer. */
213  pstatic_stored_object search_stored_object(pstatic_stored_object_key k);
214 
215  pstatic_stored_object search_stored_object_on_all_threads(pstatic_stored_object_key k);
216 
217  /** Test if an object is stored*/
218  bool exists_stored_object(pstatic_stored_object o);
219 
220  /** Add a dependency, object o1 will depend on object o2. */
221  void add_dependency(pstatic_stored_object o1, pstatic_stored_object o2);
222 
223  /** remove a dependency. Return true if o2 has no more dependent object. */
224  bool del_dependency(pstatic_stored_object o1, pstatic_stored_object o2);
225 
226  /** Add an object with two optional dependencies. */
227  void add_stored_object(pstatic_stored_object_key k, pstatic_stored_object o,
228  permanence perm = STANDARD_STATIC_OBJECT);
229 
230  inline void
231  add_stored_object(pstatic_stored_object_key k, pstatic_stored_object o,
232  pstatic_stored_object dep1,
233  permanence perm = STANDARD_STATIC_OBJECT) {
234  add_stored_object(k, o, perm);
235  add_dependency(o, dep1);
236  }
237 
238  inline void
239  add_stored_object(pstatic_stored_object_key k, pstatic_stored_object o,
240  pstatic_stored_object dep1, pstatic_stored_object dep2,
241  permanence perm = STANDARD_STATIC_OBJECT) {
242  add_stored_object(k, o, perm);
243  add_dependency(o, dep1);
244  add_dependency(o, dep2);
245  }
246 
247  inline void
248  add_stored_object(pstatic_stored_object_key k, pstatic_stored_object o,
249  pstatic_stored_object dep1, pstatic_stored_object dep2,
250  pstatic_stored_object dep3,
251  permanence perm = STANDARD_STATIC_OBJECT) {
252  add_stored_object(k, o, perm);
253  add_dependency(o, dep1);
254  add_dependency(o, dep2);
255  add_dependency(o, dep3);
256  }
257 
258  inline void
259  add_stored_object(pstatic_stored_object_key k, pstatic_stored_object o,
260  pstatic_stored_object dep1, pstatic_stored_object dep2,
261  pstatic_stored_object dep3, pstatic_stored_object dep4,
262  permanence perm = STANDARD_STATIC_OBJECT) {
263  add_stored_object(k, o, perm);
264  add_dependency(o, dep1);
265  add_dependency(o, dep2);
266  add_dependency(o, dep3);
267  add_dependency(o, dep4);
268  }
269 
270  /** Delete an object and the object which depend on it. */
271  void del_stored_object(const pstatic_stored_object &o,
272  bool ignore_unstored=false);
273 
274  /** Delete all the object whose permanence is greater or equal to perm. */
275  void del_stored_objects(int perm);
276 
277  /** Show a list of stored objects (for debugging purpose). */
278  void list_stored_objects(std::ostream &ost);
279 
280  /** Return the number of stored objects (for debugging purpose). */
281  size_t nb_stored_objects(void);
282 
283  /** Delete a list of objects and their dependencies*/
284  void del_stored_objects(std::list<pstatic_stored_object> &to_delete,
285  bool ignore_unstored);
286 
287  /** Test the validity of the whole global storage */
288  void test_stored_objects(void);
289 
290 
291  /** Pointer to an object with the dependencies */
293  pstatic_stored_object p;
294  std::atomic_bool valid;
295  const permanence perm;
296  std::set<pstatic_stored_object> dependent_object;
297  std::set<pstatic_stored_object> dependencies;
298  enr_static_stored_object(pstatic_stored_object o, permanence perma)
299  : p(o), perm(perma) {valid = true;}
301  : perm(STANDARD_STATIC_OBJECT) {valid = true;}
303  : p(enr_o.p), perm(enr_o.perm), dependent_object(enr_o.dependent_object),
304  dependencies(enr_o.dependencies){valid = static_cast<bool>(enr_o.perm);}
305  };
306 
307 
308 
309  /** Pointer to a key with a coherent order */
311  pstatic_stored_object_key p;
312  bool operator < (const enr_static_stored_object_key &o) const
313  { return (*p) < (*(o.p)); }
314  enr_static_stored_object_key(pstatic_stored_object_key o) : p(o) {}
315  };
316 
317 
318 
319  /** Table of stored objects. Thread safe, uses thread specific mutexes. */
321  public std::map<enr_static_stored_object_key, enr_static_stored_object> {
322 
323  typedef std::map<pstatic_stored_object,pstatic_stored_object_key>
324  stored_key_tab;
325 
328  pstatic_stored_object
329  search_stored_object(pstatic_stored_object_key k) const;
330  bool has_dependent_objects(pstatic_stored_object o) const;
331  bool exists_stored_object(pstatic_stored_object o) const;
332  //adding the object to the storage on the current thread
333  void add_stored_object(pstatic_stored_object_key k, pstatic_stored_object o,
334  permanence perm);
335 
336  iterator iterator_of_object_(pstatic_stored_object o);
337  //delete o2 from the dependency list of o1
338  //true if successfull, false if o1 is not
339  //on this thread
340  bool del_dependency_(pstatic_stored_object o1,
341  pstatic_stored_object o2);
342  //delete o1 from the dependent list of o2
343  //true if successfull, false if o1 is not
344  //on this thread
345  bool del_dependent_(pstatic_stored_object o1,
346  pstatic_stored_object o2);
347  //add o2 to the dependency list of o1
348  //true if successfull, false if o1 is not
349  //on this thread
350  bool add_dependency_(pstatic_stored_object o1,
351  pstatic_stored_object o2);
352  //add o1 to the dependent list of o2
353  //true if successfull, false if o1 is not
354  //on this thread
355  bool add_dependent_(pstatic_stored_object o1,
356  pstatic_stored_object o2);
357  void basic_delete_(std::list<pstatic_stored_object> &to_delete);
358 
359  getfem::lock_factory locks_;
360  stored_key_tab stored_keys_;
361  };
362 
363 
364 
365  /** delete all the specific type of stored objects*/
366  template<typename OBJECT_TYPE>
367  void delete_specific_type_stored_objects(bool all_threads = false){
368  std::list<pstatic_stored_object> delete_object_list;
369 
370  auto filter_objects = [&](stored_object_tab &stored_objects){
371  for(auto &&pair : stored_objects){
372  auto p_object = std::dynamic_pointer_cast<const OBJECT_TYPE>(pair.second.p);
373  if(p_object != nullptr) delete_object_list.push_back(pair.second.p);
374  }
375  };
376 
377  if (!all_threads){
378  auto& stored_objects = singleton<stored_object_tab>::instance();
379  filter_objects(stored_objects);
380  }
381  else{
382  for(size_t thread = 0; thread < singleton<stored_object_tab>::num_threads(); ++thread)
383  {
384  auto& stored_objects = singleton<stored_object_tab>::instance(thread);
385  filter_objects(stored_objects);
386  }
387  }
388  del_stored_objects(delete_object_list, false);
389  }
390 }
391 
392 #endif /* DAL_STATIC_STORED_OBJECTS_H__ */
dal::singleton::instance
static T & instance()
Instance from the current thread.
Definition: dal_singleton.h:165
dal::enr_static_stored_object_key
Pointer to a key with a coherent order.
Definition: dal_static_stored_objects.h:310
dal_singleton.h
A simple singleton implementation.
dal
Dynamic Array Library.
Definition: dal_backtrace.cc:29
dal::del_stored_object
void del_stored_object(const pstatic_stored_object &o, bool ignore_unstored)
Delete an object and the object which depend on it.
Definition: dal_static_stored_objects.cc:369
dal::del_dependency
bool del_dependency(pstatic_stored_object o1, pstatic_stored_object o2)
remove a dependency.
Definition: dal_static_stored_objects.cc:256
dal::delete_specific_type_stored_objects
void delete_specific_type_stored_objects(bool all_threads=false)
delete all the specific type of stored objects
Definition: dal_static_stored_objects.h:367
dal::enr_static_stored_object
Pointer to an object with the dependencies.
Definition: dal_static_stored_objects.h:292
dal::stored_object_tab::stored_object_tab
stored_object_tab()
STATIC_STORED_TAB ----------------------------------------------------—.
Definition: dal_static_stored_objects.cc:415
dal::search_stored_object
pstatic_stored_object search_stored_object(pstatic_stored_object_key k)
Gives a pointer to an object from a key pointer.
Definition: dal_static_stored_objects.cc:177
dal_config.h
defines and typedefs for namespace dal
dal::nb_stored_objects
size_t nb_stored_objects(void)
Return the number of stored objects (for debugging purpose).
Definition: dal_static_stored_objects.cc:402
getfem_omp.h
Tools for multithreaded, OpenMP and Boost based parallelization.
dal::stored_object_tab
Table of stored objects.
Definition: dal_static_stored_objects.h:320
dal::list_stored_objects
void list_stored_objects(std::ostream &ost)
Show a list of stored objects (for debugging purpose).
Definition: dal_static_stored_objects.cc:389
dal::exists_stored_object
bool exists_stored_object(pstatic_stored_object o)
Test if an object is stored.
Definition: dal_static_stored_objects.cc:171
dal::add_stored_object
void add_stored_object(pstatic_stored_object_key k, pstatic_stored_object o, permanence perm)
Add an object with two optional dependencies.
Definition: dal_static_stored_objects.cc:284
dal::static_stored_object
base class for static stored objects
Definition: dal_static_stored_objects.h:206
dal::del_stored_objects
void del_stored_objects(std::list< pstatic_stored_object > &to_delete, bool ignore_unstored)
Delete a list of objects and their dependencies.
Definition: dal_static_stored_objects.cc:311
dal::test_stored_objects
void test_stored_objects(void)
Test the validity of the whole global storage.
Definition: dal_static_stored_objects.cc:211
dal::add_dependency
void add_dependency(pstatic_stored_object o1, pstatic_stored_object o2)
Add a dependency, object o1 will depend on object o2.
Definition: dal_static_stored_objects.cc:230