| 1 | // Copyright (C) 2011 Tim Blechmann |
|---|---|
| 2 | // |
| 3 | // Distributed under the Boost Software License, Version 1.0. (See |
| 4 | // accompanying file LICENSE_1_0.txt or copy at |
| 5 | // http://www.boost.org/LICENSE_1_0.txt) |
| 6 | |
| 7 | #include <cstdlib> //std::system |
| 8 | #include <sstream> |
| 9 | |
| 10 | #include <boost/interprocess/managed_shared_memory.hpp> |
| 11 | #include <boost/lockfree/stack.hpp> |
| 12 | #include <boost/thread/thread.hpp> |
| 13 | |
| 14 | using namespace boost::interprocess; |
| 15 | typedef allocator<int, managed_shared_memory::segment_manager> ShmemAllocator; |
| 16 | typedef boost::lockfree::stack<int, |
| 17 | boost::lockfree::allocator<ShmemAllocator>, |
| 18 | boost::lockfree::capacity<2048> |
| 19 | > stack; |
| 20 | |
| 21 | int main (int argc, char *argv[]) |
| 22 | { |
| 23 | if(argc == 1){ |
| 24 | struct shm_remove |
| 25 | { |
| 26 | shm_remove() { shared_memory_object::remove(filename: "MySharedMemory"); } |
| 27 | ~shm_remove(){ shared_memory_object::remove(filename: "MySharedMemory"); } |
| 28 | } remover; |
| 29 | |
| 30 | managed_shared_memory segment(create_only, "MySharedMemory", 65536); |
| 31 | ShmemAllocator alloc_inst (segment.get_segment_manager()); |
| 32 | |
| 33 | stack * queue = segment.construct<stack>(name: "stack")(alloc_inst); |
| 34 | for (int i = 0; i != 1024; ++i) |
| 35 | queue->push(v: i); |
| 36 | |
| 37 | std::string s(argv[0]); s += " child "; |
| 38 | if(0 != std::system(command: s.c_str())) |
| 39 | return 1; |
| 40 | |
| 41 | while (!queue->empty()) |
| 42 | boost::thread::yield(); |
| 43 | return 0; |
| 44 | } else { |
| 45 | managed_shared_memory segment(open_only, "MySharedMemory"); |
| 46 | stack * queue = segment.find<stack>(name: "stack").first; |
| 47 | |
| 48 | int from_queue; |
| 49 | for (int i = 0; i != 1024; ++i) { |
| 50 | bool success = queue->pop(ret&: from_queue); |
| 51 | assert (success); |
| 52 | assert (from_queue == 1023 - i); |
| 53 | } |
| 54 | segment.destroy<stack>(name: "stack"); |
| 55 | } |
| 56 | return 0; |
| 57 | } |
| 58 |