| ////////////////////////////////////////////////////////////////////////////// |
| // |
| // (C) Copyright Ion Gaztanaga 2004-2012. 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 <fstream> |
| #include <iostream> |
| #include <boost/interprocess/shared_memory_object.hpp> |
| #include <boost/interprocess/mapped_region.hpp> |
| #include <boost/interprocess/anonymous_shared_memory.hpp> |
| #include <string> |
| #include "get_process_id_name.hpp" |
| |
| using namespace boost::interprocess; |
| |
| shared_memory_object get_shared_memory_mapping() |
| { |
| shared_memory_object sh; |
| return shared_memory_object(boost::move(sh)); |
| } |
| |
| int main () |
| { |
| std::string process_id = test::get_process_id_name(); |
| std::string process_id2(process_id); |
| process_id2 += "_2"; |
| try{ |
| const std::size_t FileSize = 99999*4; |
| { |
| //Remove shared memory |
| shared_memory_object::remove(process_id.c_str()); |
| shared_memory_object::remove(process_id2.c_str()); |
| |
| //Create shared memory and file mapping |
| shared_memory_object mapping(create_only, process_id.c_str(), read_write); |
| mapping.truncate(FileSize); |
| } |
| |
| { |
| //Create a file mapping |
| shared_memory_object mapping(open_only, process_id.c_str(), read_write); |
| |
| //Create two mapped regions, one half of the file each |
| mapped_region region (mapping |
| ,read_write |
| ,0 |
| ,FileSize/2 |
| ,0); |
| |
| mapped_region region2(mapping |
| ,read_write |
| ,FileSize/2 |
| ,FileSize - FileSize/2 |
| ,0); |
| |
| //Fill two regions with a pattern |
| unsigned char *filler = static_cast<unsigned char*>(region.get_address()); |
| for(std::size_t i = 0 |
| ;i < FileSize/2 |
| ;++i){ |
| *filler++ = static_cast<unsigned char>(i); |
| } |
| |
| filler = static_cast<unsigned char*>(region2.get_address()); |
| for(std::size_t i = FileSize/2 |
| ;i < FileSize |
| ;++i){ |
| *filler++ = static_cast<unsigned char>(i); |
| } |
| if(!region.flush(0, 0, false)){ |
| return 1; |
| } |
| |
| if(!region2.flush(0, 0, true)){ |
| return 1; |
| } |
| } |
| |
| //See if the pattern is correct in the file using two mapped regions |
| { |
| //Create a file mapping |
| shared_memory_object mapping(open_only, process_id.c_str(), read_write); |
| mapped_region region(mapping, read_write, 0, FileSize/2, 0); |
| mapped_region region2(mapping, read_write, FileSize/2, FileSize - FileSize/2, 0); |
| |
| unsigned char *checker = static_cast<unsigned char*>(region.get_address()); |
| //Check pattern |
| for(std::size_t i = 0 |
| ;i < FileSize/2 |
| ;++i){ |
| if(*checker++ != static_cast<unsigned char>(i)){ |
| return 1; |
| } |
| } |
| |
| //Check second half |
| checker = static_cast<unsigned char *>(region2.get_address()); |
| |
| //Check pattern |
| for(std::size_t i = FileSize/2 |
| ;i < FileSize |
| ;++i){ |
| if(*checker++ != static_cast<unsigned char>(i)){ |
| return 1; |
| } |
| } |
| } |
| |
| //Now check the pattern mapping a single read only mapped_region |
| { |
| //Create a file mapping |
| shared_memory_object mapping(open_only, process_id.c_str(), read_only); |
| |
| //Create a single regions, mapping all the file |
| mapped_region region (mapping, read_only); |
| |
| //Check pattern |
| unsigned char *pattern = static_cast<unsigned char*>(region.get_address()); |
| for(std::size_t i = 0 |
| ;i < FileSize |
| ;++i, ++pattern){ |
| if(*pattern != static_cast<unsigned char>(i)){ |
| return 1; |
| } |
| } |
| //Now shrink |
| const std::size_t original_region_size = region.get_size(); |
| if(!region.shrink_by(region.get_size()/2, false) || region.get_size() != original_region_size/2){ |
| return 1; |
| } |
| const std::size_t shrunk_region_size = region.get_size(); |
| if(!region.shrink_by(region.get_size()/2, true) || region.get_size() != shrunk_region_size/2){ |
| return 1; |
| } |
| |
| //Now advise |
| #if defined(POSIX_MADV_NORMAL) || defined(MADV_NORMAL) |
| std::cout << "Advice normal" << std::endl; |
| if(!region.advise(mapped_region::advice_normal)){ |
| return 1; |
| } |
| #endif |
| |
| #if defined(POSIX_MADV_SEQUENTIAL) || defined(MADV_SEQUENTIAL) |
| std::cout << "Advice sequential" << std::endl; |
| if(!region.advise(mapped_region::advice_sequential)){ |
| return 1; |
| } |
| #endif |
| |
| #if defined(POSIX_MADV_RANDOM) || defined(MADV_RANDOM) |
| std::cout << "Advice random" << std::endl; |
| if(!region.advise(mapped_region::advice_random)){ |
| return 1; |
| } |
| #endif |
| |
| #if defined(POSIX_MADV_WILLNEED) || defined(MADV_WILLNEED) |
| std::cout << "Advice 'will need'" << std::endl; |
| if(!region.advise(mapped_region::advice_willneed)){ |
| return 1; |
| } |
| #endif |
| |
| #if defined(POSIX_MADV_DONTNEED) || (defined(MADV_DONTNEED) && defined(BOOST_INTERPROCESS_MADV_DONTNEED_HAS_NONDESTRUCTIVE_SEMANTICS)) |
| std::cout << "Advice 'dont't need'" << std::endl; |
| if(!region.advise(mapped_region::advice_dontneed)){ |
| return 1; |
| } |
| #endif |
| |
| } |
| { |
| //Check for busy address space |
| shared_memory_object mapping(open_only, process_id.c_str(), read_only); |
| mapped_region region (mapping, read_only); |
| shared_memory_object mapping2(create_only, process_id2.c_str(), read_write); |
| mapping2.truncate(FileSize); |
| try{ |
| mapped_region region2 (mapping2, read_only, 0, FileSize, region.get_address()); |
| } |
| catch(interprocess_exception &e){ |
| shared_memory_object::remove(process_id2.c_str()); |
| if(e.get_error_code() != busy_error){ |
| throw e; |
| } |
| } |
| catch(std::exception &){ |
| shared_memory_object::remove(process_id2.c_str()); |
| throw; |
| } |
| shared_memory_object::remove(process_id2.c_str()); |
| } |
| { |
| //Now check anonymous mapping |
| mapped_region region(anonymous_shared_memory(FileSize)); |
| |
| //Write pattern |
| unsigned char *pattern = static_cast<unsigned char*>(region.get_address()); |
| for(std::size_t i = 0 |
| ;i < FileSize |
| ;++i, ++pattern){ |
| *pattern = static_cast<unsigned char>(i); |
| } |
| |
| //Check pattern |
| pattern = static_cast<unsigned char*>(region.get_address()); |
| for(std::size_t i = 0 |
| ;i < FileSize |
| ;++i, ++pattern){ |
| if(*pattern != static_cast<unsigned char>(i)){ |
| return 1; |
| } |
| } |
| } |
| { |
| //Now test move semantics |
| shared_memory_object mapping(open_only, process_id.c_str(), read_write); |
| shared_memory_object move_ctor(boost::move(mapping)); |
| shared_memory_object move_assign; |
| move_assign = boost::move(move_ctor); |
| shared_memory_object ret(get_shared_memory_mapping()); |
| } |
| } |
| catch(std::exception &exc){ |
| shared_memory_object::remove(process_id.c_str()); |
| shared_memory_object::remove(process_id2.c_str()); |
| std::cout << "Unhandled exception: " << exc.what() << std::endl; |
| return 1; |
| } |
| shared_memory_object::remove(process_id.c_str()); |
| return 0; |
| } |