| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (C) Copyright Ion Gaztanaga 2006-2009. 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; |
| |
| //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*, std::size_t> 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> |