diff options
Diffstat (limited to 'lib/circular_buffer.cpp')
| -rw-r--r-- | lib/circular_buffer.cpp | 28 |
1 files changed, 3 insertions, 25 deletions
diff --git a/lib/circular_buffer.cpp b/lib/circular_buffer.cpp index 1021a12..5e56469 100644 --- a/lib/circular_buffer.cpp +++ b/lib/circular_buffer.cpp @@ -5,6 +5,7 @@ #include <boost/format.hpp> #include <boost/bind.hpp> #include <boost/interprocess/shared_memory_object.hpp> +#include <boost/interprocess/anonymous_shared_memory.hpp> #include <boost/interprocess/mapped_region.hpp> #include <boost/lexical_cast.hpp> #include <boost/thread/thread.hpp> @@ -58,35 +59,12 @@ CircularBuffer::CircularBuffer(const size_t num_bytes) //////////////////////////////////////////////////////////////// // Step 0) Find an address that can be mapped across 2x length: - // Allocate physical memory 2x the required size. - // Map a virtual memory region across this memory. - // Now we have a 2x length swath of virtual memory. //////////////////////////////////////////////////////////////// { - shm_name = omg_so_unique(); - - //std::cout << "make shmem 2x\n" << std::endl; - ipc::shared_memory_object shm_obj_2x( - ipc::create_only, //only create - shm_name.c_str(), //name - ipc::read_write //read-write mode - ); - - //std::cout << "truncate 2x\n" << std::endl; - shm_obj_2x.truncate(2*len); - - //std::cout << "map region 0\n" << std::endl; - ipc::mapped_region region0( - shm_obj_2x, //Memory-mappable object - ipc::read_write, //Access mode - 0, //Offset from the beginning of shm - 2*len //Length of the region - ); - //std::cout << "region0.get_address() " << size_t(region0.get_address()) << std::endl; - - ipc::shared_memory_object::remove(shm_name.c_str()); + ipc::mapped_region region0(ipc::anonymous_shared_memory(len*2)); buff_addr = (char *)region0.get_address(); } + std::cout << "reserve addr " << std::hex << size_t(buff_addr) << std::dec << std::endl; //////////////////////////////////////////////////////////////// // Step 1) Allocate a chunk of physical memory of length bytes |