eis/shm/TaskData.h

#pragma once
/**
 * @file TaskData.h
 * @brief task进程，缓存数据（动态vector，按需分配）
 * @author your name (you@domain.com)
 * @version 0.2
 * @date 2024-02-27
 *
 * Copyright: Baosight Co. Ltd.
 * DO NOT COPY/USE WITHOUT PERMISSION
 */
#include <mix_cc/shm.h>
namespace TaskShm {
namespace SHM = mix_cc::shm;
namespace bipc = mix_cc::shm::bip;

const static std::string dir_path = "/users/dsc/shm";
const static std::string shm_file = "TaskData"; ///<映射文件名
const double data_size = 10;                   ///< 数据大小 MB（按需动态）

static bipc::managed_mapped_file
    obj_mapped_file(bipc::open_or_create,
                    (dir_path + "/" + shm_file + "_boost.mmap").c_str(),
                    mix_cc::data_size::MB(data_size));

typedef bipc::managed_mapped_file::segment_manager segment_manager_t;
typedef bipc::node_allocator<float, segment_manager_t> vec_allocator_f;
typedef boost::container::vector<float, vec_allocator_f> shm_vector_f;

struct TaskRecord {
  shm_vector_f data_record;
  TaskRecord(const bipc::node_allocator<void, segment_manager_t> &alloc)
      : data_record(alloc) {}
};

/*单例 map 记录task数据项*/
const static bipc::offset_ptr<SHM::Map<int, TaskRecord>> TaskRecordPtr =
    SHM::MapBuilder<int, TaskRecord>::find_or_construct(&obj_mapped_file,
                                                        shm_file);

} // namespace TaskShm