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28 lines
1.0 KiB
C++
28 lines
1.0 KiB
C++
#include "IHalCpp.h"
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#include "ILog.h"
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#include <memory>
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std::shared_ptr<IHalCpp> &IHalCpp::GetInstance(std::shared_ptr<IHalCpp> *impl)
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{
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static std::shared_ptr<IHalCpp> instance = std::make_shared<IHalCpp>();
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static bool instanceChanging = false;
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if (impl && false == instanceChanging) {
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// Don't use std::mutex for runing faster.
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// Sleep for difference thread to release instance.
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instanceChanging = true;
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// std::this_thread::sleep_for(std::chrono::milliseconds(100)); // Don't sleep and make sure that start fast.
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if (instance.use_count() == 1) // bug?
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{
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LogInfo("Instance change succeed.\n");
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instance = *impl;
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}
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else {
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LogError("[ error ] instance change failed, using by some one.\n");
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}
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instanceChanging = false;
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}
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if (instanceChanging) {
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static std::shared_ptr<IHalCpp> tmporaryInstance = std::make_shared<IHalCpp>();
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return tmporaryInstance;
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}
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return instance;
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} |