mirror of
https://github.com/boostorg/interprocess.git
synced 2026-01-19 04:12:13 +00:00
48990c0766
Source breaking: A shared memory object is now used including shared_memory_object.hpp header instead of shared memory.hpp. ABI breaking: Changed global mutex when initializing managed shared memory and memory mapped files. This change tries to minimize deadlocks. Source breaking: Changed shared memory, memory mapped files and mapped region's open mode to a single boost::interprocess::mode_t type. Added extra WIN32_LEAN_AND_MEAN before including DateTime headers to avoid socket redefinition errors when using Interprocess and Asio in windows. ABI breaking: mapped_region constructor no longer requires classes derived from memory_mappable, but classes the fulfill the MemoryMappable concept. Added in-place reallocation capabilities to basic_string. ABI breaking: Reimplemented and optimized small string optimization. The narrow string class has zero byte overhead with an internal 11 byte buffer in 32 systems! Added move semantics to containers. Experimental and not documented yet. Improves performance when using containers of containers. ABI breaking: End nodes of node containers (list, slist, map/set) are now embedded in the containers instead of allocated using the allocator. This allows no-throw move-constructors and improves performance. ABI breaking: slist and list containers now have constant-time size() function. The size of the container is added as a member. [SVN r35618]
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// (C) Copyright Ion Gaztañaga 2004-2006. 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>
|
|
|
|
#include <boost/interprocess/offset_ptr.hpp>
|
|
#include <boost/interprocess/allocators/allocator.hpp>
|
|
#include <boost/interprocess/managed_shared_memory.hpp>
|
|
#include "print_container.hpp"
|
|
#include <algorithm>
|
|
#include <boost/interprocess/sync/named_semaphore.hpp>
|
|
#include <boost/interprocess/containers/vector.hpp>
|
|
#include <boost/interprocess/sync/interprocess_condition.hpp>
|
|
|
|
using namespace boost::interprocess;
|
|
|
|
int main ()
|
|
{
|
|
//Shared memory attributes
|
|
const int memsize = 65536;
|
|
const char *const shMemName = "MySharedMemory";
|
|
|
|
//Create sems for synchronization
|
|
named_semaphore semA(open_or_create, "processAsem", 0);
|
|
named_semaphore semB(open_or_create, "processBsem", 0);
|
|
|
|
//Create shared memory
|
|
managed_shared_memory segment(open_or_create, shMemName, memsize);
|
|
|
|
//STL compatible allocator object, uses allocate(), deallocate() functions
|
|
typedef allocator<int, managed_shared_memory::segment_manager>
|
|
shmem_allocator_int_t;
|
|
|
|
const int num_elements = 100;
|
|
|
|
//Type of shared memory vector
|
|
typedef vector<int, shmem_allocator_int_t > MyVect;
|
|
|
|
const shmem_allocator_int_t &alloc_ref (segment.get_segment_manager());
|
|
|
|
//Creating the vector in shared memory
|
|
std::cout << "Named New of ShmVect\n\n";
|
|
MyVect *shmem_vect = segment.construct<MyVect> ("ShmVect")(alloc_ref);
|
|
|
|
offset_ptr<MyVect> shmptr_vect = 0;
|
|
offset_ptr<MyVect> other_shmptr_vect = 0;
|
|
|
|
//Fill the vector
|
|
std::cout << "Filling ShmVect\n\n";
|
|
int i;
|
|
for(i = 0; i < num_elements; ++i){
|
|
shmem_vect->push_back(i);
|
|
}
|
|
|
|
//Printing contents before waiting to second process
|
|
PrintContents(*shmem_vect, "ShmVect");
|
|
|
|
//Wake up other process and sleeping until notified
|
|
semB.post();
|
|
std::cout << "Waking up processB and waiting sorting\n\n";
|
|
semA.wait();
|
|
|
|
//Notification received, let's see the changes
|
|
std::cout << "processB sorting complete\n\n";
|
|
PrintContents(*shmem_vect, "ShmVect");
|
|
|
|
//Let's delete the vector from memory
|
|
std::cout << "Deleting the vector with destroy\n\n";
|
|
segment.destroy<MyVect> ("ShmVect");
|
|
std::cout << "vector deleted\n\n";
|
|
return 0;
|
|
}
|
|
|
|
#include <boost/interprocess/detail/config_end.hpp>
|