+++ /dev/null
-////////////////////////////////////////////////////////////////////////////////\r
-\r
-// Author: Andy Rushton\r
-// Copyright: (c) Southampton University 1999-2004\r
-// (c) Andy Rushton 2004-2009\r
-// License: BSD License, see ../docs/license.html\r
-\r
-// format: magic_key [ data ]\r
-\r
-////////////////////////////////////////////////////////////////////////////////\r
-#include "persistent_int.hpp"\r
-\r
-namespace stlplus\r
-{\r
-\r
- ////////////////////////////////////////////////////////////////////////////////\r
-\r
- template<typename T, typename D>\r
- void dump_pointer(dump_context& context, const T* const data, D dump_fn)\r
- throw(persistent_dump_failed)\r
- {\r
- // register the address and get the magic key for it\r
- std::pair<bool,unsigned> mapping = context.pointer_map(data);\r
- dump_unsigned(context,mapping.second);\r
- // if the address is null, then that is all that we need to do\r
- // however, if it is non-null and this is the first sight of the address, dump the contents\r
- // note that the address is mapped before it is dumped so that self-referential structures dump correctly\r
- if (data && !mapping.first)\r
- dump_fn(context,*data);\r
- }\r
-\r
- ////////////////////////////////////////////////////////////////////////////////\r
-\r
- template<typename T, typename R>\r
- void restore_pointer(restore_context& context, T*& data, R restore_fn)\r
- throw(persistent_restore_failed)\r
- {\r
- if (data)\r
- {\r
- delete data;\r
- data = 0;\r
- }\r
- // get the magic key\r
- unsigned magic = 0;\r
- restore_unsigned(context,magic);\r
- // now lookup the magic key to see if this pointer has already been restored\r
- // null pointers are always flagged as already restored\r
- std::pair<bool,void*> address = context.pointer_map(magic);\r
- if (address.first)\r
- {\r
- // seen before, so simply assign the old address\r
- data = (T*)address.second;\r
- }\r
- else\r
- {\r
- // this pointer has never been seen before and is non-null\r
- data = new T();\r
- // add this pointer to the set of already seen objects\r
- // do this before restoring the object so that self-referential structures restore correctly\r
- context.pointer_add(magic,data);\r
- // now restore it\r
- restore_fn(context,*data);\r
- }\r
- }\r
-\r
- ////////////////////////////////////////////////////////////////////////////////\r
-\r
-} // end namespace stlplus\r