e21b2af2a6
DataRecord used a fixed float[129600000] consuming 5GB disk even when collecting only a few hundred data points. Replaced with shm_vector_f that grows on demand via push_back. Removes the need for rm -rf on process exit — vector destructor frees memory back to the segment. Also drops now-unnecessary task_data_size member.
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
#pragma once
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/**
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* @file TaskData.h
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* @brief task进程，缓存数据（动态vector，按需分配）
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* @author your name (you@domain.com)
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* @version 0.2
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* @date 2024-02-27
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*
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* Copyright: Baosight Co. Ltd.
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* DO NOT COPY/USE WITHOUT PERMISSION
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*/
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#include <mix_cc/shm.h>
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namespace TaskShm {
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namespace SHM = mix_cc::shm;
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namespace bipc = mix_cc::shm::bip;
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const static std::string dir_path = "/users/dsc/shm";
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const static std::string shm_file = "TaskData"; ///<映射文件名
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const double data_size = 10; ///< 数据大小 MB（按需动态）
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static bipc::managed_mapped_file
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obj_mapped_file(bipc::open_or_create,
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(dir_path + "/" + shm_file + "_boost.mmap").c_str(),
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mix_cc::data_size::MB(data_size));
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typedef bipc::managed_mapped_file::segment_manager segment_manager_t;
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typedef bipc::node_allocator<float, segment_manager_t> vec_allocator_f;
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typedef boost::container::vector<float, vec_allocator_f> shm_vector_f;
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struct TaskRecord {
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shm_vector_f data_record;
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TaskRecord(const bipc::node_allocator<void, segment_manager_t> &alloc)
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: data_record(alloc) {}
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};
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/*单例 map 记录task数据项*/
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const static bipc::offset_ptr<SHM::Map<int, TaskRecord>> TaskRecordPtr =
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SHM::MapBuilder<int, TaskRecord>::find_or_construct(&obj_mapped_file,
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shm_file);
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} // namespace TaskShm
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