70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
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#pragma once
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/**
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* @file SerializeMap.h
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* @brief
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* @author your name (you@domain.com)
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* @version 0.1
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* @date 2023-12-22
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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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*/
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#include <mix_cc/serialize/deserialize.h>
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#include <mix_cc/serialize/serialize.h>
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#include <mutex>
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#include "shm_header.h"
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namespace RuleStatShm {
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using namespace ShmHeader;
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const static std::string dir_path = "/users/dsc/shm";
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const static std::string shm_file = "SerializeMap"; ///<映射文件名
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const double data_size = 500; ///< 数据大小 MB
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///< key 是string的情况
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typedef std::pair<const char_string, bipc::string> pair_s; ///< key-value
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typedef bipc::node_allocator<pair_s, mapped_segment_manager_t>
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allocator_s; ///<映射文件
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typedef std::less<char_string> less_s;
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typedef bipc::map<char_string, bipc::string, less_s, allocator_s> SerializeMap;
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typedef SerializeMap::iterator SerializeMap_iter_s;
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namespace {
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bipc::offset_ptr<SerializeMap> SerializeMapPtr =
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obj_mapped_file.find_or_construct<SerializeMap>(shm_file.c_str())(
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less_s(), obj_mapped_file.get_segment_manager());
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std::mutex local_mutext{}; ///<共享锁
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} // namespace
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///<定义数据操作
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template <typename T>
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struct SerializeMapOperator {
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public:
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template <typename T>
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static bool insert(std::string key, T data) {
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std::lock_guard<std::mutex> guard(local_mutext);
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std::string res = mix_cc::serialize(data);
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if (!res.empty()) {
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try {
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SerializeMapPtr.get()->operator[](key) = res;
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}
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}
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}
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template <typename T>
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static T get_data(std::string key) {
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std::lock_guard<std::mutex> guard(local_mutext);
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auto res = SerializeMapPtr.get()->operator[](key);
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return mix_cc::deserialize(res);
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}
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static bool delete_data(std::string key) {
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if (SerializeMapPtr.get()->find(key) == SerializeMapPtr.get()->end()) {
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return false;
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} else {
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SerializeMapPtr.get()->erase(key);
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return true;
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}
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}
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};
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} // namespace RuleStatShm
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