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- //////////////////////////////////////////////////////////////////////////////
- //
- // (C) Copyright Ion Gaztanaga 2006-2012. Distributed under the Boost
- // Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
- // See http://www.boost.org/libs/interprocess for documentation.
- //
- //////////////////////////////////////////////////////////////////////////////
- #include <boost/interprocess/detail/config_begin.hpp>
- #include <boost/interprocess/detail/workaround.hpp>
- //[doc_named_alloc
- #include <boost/interprocess/managed_shared_memory.hpp>
- #include <cstdlib> //std::system
- #include <cstddef>
- #include <cassert>
- #include <utility>
- //<-
- #include "../test/get_process_id_name.hpp"
- //->
- int main(int argc, char *argv[])
- {
- using namespace boost::interprocess;
- typedef std::pair<double, int> MyType;
- if(argc == 1){ //Parent process
- //Remove shared memory on construction and destruction
- struct shm_remove
- {
- //<-
- #if 1
- shm_remove() { shared_memory_object::remove(test::get_process_id_name()); }
- ~shm_remove(){ shared_memory_object::remove(test::get_process_id_name()); }
- #else
- //->
- shm_remove() { shared_memory_object::remove("MySharedMemory"); }
- ~shm_remove(){ shared_memory_object::remove("MySharedMemory"); }
- //<-
- #endif
- //->
- } remover;
- //<-
- (void)remover;
- //->
- //Construct managed shared memory
- //<-
- #if 1
- managed_shared_memory segment(create_only, test::get_process_id_name(), 65536);
- #else
- //->
- managed_shared_memory segment(create_only, "MySharedMemory", 65536);
- //<-
- #endif
- //->
- //Create an object of MyType initialized to {0.0, 0}
- MyType *instance = segment.construct<MyType>
- ("MyType instance") //name of the object
- (0.0, 0); //ctor first argument
- //Create an array of 10 elements of MyType initialized to {0.0, 0}
- MyType *array = segment.construct<MyType>
- ("MyType array") //name of the object
- [10] //number of elements
- (0.0, 0); //Same two ctor arguments for all objects
- //Create an array of 3 elements of MyType initializing each one
- //to a different value {0.0, 0}, {1.0, 1}, {2.0, 2}...
- float float_initializer[3] = { 0.0, 1.0, 2.0 };
- int int_initializer[3] = { 0, 1, 2 };
- MyType *array_it = segment.construct_it<MyType>
- ("MyType array from it") //name of the object
- [3] //number of elements
- ( &float_initializer[0] //Iterator for the 1st ctor argument
- , &int_initializer[0]); //Iterator for the 2nd ctor argument
- //Launch child process
- std::string s(argv[0]); s += " child ";
- //<-
- s += test::get_process_id_name();
- //->
- if(0 != std::system(s.c_str()))
- return 1;
- //<-
- (void)instance;
- (void)array;
- (void)array_it;
- //->
- //Check child has destroyed all objects
- if(segment.find<MyType>("MyType array").first ||
- segment.find<MyType>("MyType instance").first ||
- segment.find<MyType>("MyType array from it").first)
- return 1;
- }
- else{
- //Open managed shared memory
- //<-
- #if 1
- managed_shared_memory segment(open_only, argv[2]);
- #else
- //->
- managed_shared_memory segment(open_only, "MySharedMemory");
- //<-
- #endif
- //->
- std::pair<MyType*, managed_shared_memory::size_type> res;
- //Find the array
- res = segment.find<MyType> ("MyType array");
- //Length should be 10
- if(res.second != 10) return 1;
- //Find the object
- res = segment.find<MyType> ("MyType instance");
- //Length should be 1
- if(res.second != 1) return 1;
- //Find the array constructed from iterators
- res = segment.find<MyType> ("MyType array from it");
- //Length should be 3
- if(res.second != 3) return 1;
- //We're done, delete all the objects
- segment.destroy<MyType>("MyType array");
- segment.destroy<MyType>("MyType instance");
- segment.destroy<MyType>("MyType array from it");
- }
- return 0;
- }
- //]
- #include <boost/interprocess/detail/config_end.hpp>
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