| 1 | ////////////////////////////////////////////////////////////////////////////// |
|---|---|
| 2 | // |
| 3 | // (C) Copyright Ion Gaztanaga 2006-2012. Distributed under the Boost |
| 4 | // Software License, Version 1.0. (See accompanying file |
| 5 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| 6 | // |
| 7 | // See http://www.boost.org/libs/interprocess for documentation. |
| 8 | // |
| 9 | ////////////////////////////////////////////////////////////////////////////// |
| 10 | |
| 11 | //[doc_named_mutex |
| 12 | #include <boost/interprocess/sync/scoped_lock.hpp> |
| 13 | #include <boost/interprocess/sync/named_mutex.hpp> |
| 14 | #include <fstream> |
| 15 | #include <iostream> |
| 16 | #include <cstdio> |
| 17 | |
| 18 | //<- |
| 19 | #include "../test/get_process_id_name.hpp" |
| 20 | //-> |
| 21 | |
| 22 | int main () |
| 23 | { |
| 24 | using namespace boost::interprocess; |
| 25 | BOOST_TRY{ |
| 26 | struct file_remove |
| 27 | { |
| 28 | //<- |
| 29 | #if 1 |
| 30 | file_remove() { std::remove(filename: test::get_process_id_name()); } |
| 31 | ~file_remove(){ std::remove(filename: test::get_process_id_name()); } |
| 32 | #else |
| 33 | //-> |
| 34 | file_remove() { std::remove("file_name"); } |
| 35 | ~file_remove(){ std::remove("file_name"); } |
| 36 | //<- |
| 37 | #endif |
| 38 | //-> |
| 39 | } file_remover; |
| 40 | struct mutex_remove |
| 41 | { |
| 42 | //<- |
| 43 | #if 1 |
| 44 | mutex_remove() { named_mutex::remove(name: test::get_process_id_name()); } |
| 45 | ~mutex_remove(){ named_mutex::remove(name: test::get_process_id_name()); } |
| 46 | #else |
| 47 | //-> |
| 48 | mutex_remove() { named_mutex::remove("fstream_named_mutex"); } |
| 49 | ~mutex_remove(){ named_mutex::remove("fstream_named_mutex"); } |
| 50 | //<- |
| 51 | #endif |
| 52 | //-> |
| 53 | } remover; |
| 54 | //<- |
| 55 | (void)remover; |
| 56 | //-> |
| 57 | |
| 58 | //Open or create the named mutex |
| 59 | //<- |
| 60 | #if 1 |
| 61 | named_mutex mutex(open_or_create, test::get_process_id_name()); |
| 62 | #else |
| 63 | //-> |
| 64 | named_mutex mutex(open_or_create, "fstream_named_mutex"); |
| 65 | //<- |
| 66 | #endif |
| 67 | //-> |
| 68 | |
| 69 | //<- |
| 70 | #if 1 |
| 71 | std::ofstream file(test::get_process_id_name()); |
| 72 | #else |
| 73 | //-> |
| 74 | std::ofstream file("file_name"); |
| 75 | //<- |
| 76 | #endif |
| 77 | //-> |
| 78 | |
| 79 | for(int i = 0; i < 10; ++i){ |
| 80 | |
| 81 | //Do some operations... |
| 82 | |
| 83 | //Write to file atomically |
| 84 | scoped_lock<named_mutex> lock(mutex); |
| 85 | file << "Process name, "; |
| 86 | file << "This is iteration #"<< i; |
| 87 | file << std::endl; |
| 88 | } |
| 89 | } |
| 90 | BOOST_CATCH(interprocess_exception &ex){ |
| 91 | std::cout << ex.what() << std::endl; |
| 92 | return 1; |
| 93 | } BOOST_CATCH_END |
| 94 | return 0; |
| 95 | } |
| 96 | //] |
| 97 | |
| 98 |