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在C++中,使用序列化庫(如Boost.Serialization、cereal等)進(jìn)行多線程序序列化時,需要確保同步以避免數(shù)據(jù)競爭和不一致
#include <iostream>
#include <thread>
#include <mutex>
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <sstream>
class Data {
public:
int value;
template<class Archive>
void serialize(Archive & ar, const unsigned int version) {
ar & value;
}
};
std::mutex mtx; // 全局互斥鎖
void serializeData(const Data &data, std::stringstream &ss) {
std::lock_guard<std::mutex> lock(mtx); // 加鎖
boost::archive::text_oarchive oa(ss);
oa << data;
}
void deserializeData(Data &data, std::stringstream &ss) {
std::lock_guard<std::mutex> lock(mtx); // 加鎖
boost::archive::text_iarchive ia(ss);
ia >> data;
}
int main() {
// ... 多線程環(huán)境下調(diào)用serializeData和deserializeData
}
#include <iostream>
#include <thread>
#include <shared_mutex>
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <sstream>
class Data {
public:
int value;
template<class Archive>
void serialize(Archive & ar, const unsigned int version) {
ar & value;
}
};
std::shared_mutex sharedMutex; // 全局讀寫鎖
void serializeData(const Data &data, std::stringstream &ss) {
std::unique_lock<std::shared_mutex> lock(sharedMutex); // 寫鎖
boost::archive::text_oarchive oa(ss);
oa << data;
}
void deserializeData(Data &data, std::stringstream &ss) {
std::shared_lock<std::shared_mutex> lock(sharedMutex); // 讀鎖
boost::archive::text_iarchive ia(ss);
ia >> data;
}
int main() {
// ... 多線程環(huán)境下調(diào)用serializeData和deserializeData
}
注意:在這些示例中,我們使用了全局鎖。在實(shí)際應(yīng)用中,您可能需要根據(jù)需求調(diào)整鎖的范圍。例如,您可以為每個數(shù)據(jù)對象分配一個鎖,而不是使用全局鎖。這將減少鎖的粒度,從而提高性能。
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