C++在嵌入式系统开发中的中断处理与异常检测功能实现技巧

class InterruptHandler {
public:
    void operator()() {
        // 中断处理相关代码
    }
};

InterruptHandler interruptHandler;

class InterruptVectorTable {
public:
    using InterruptHandlerFunc = void (*)();
    
    void setInterruptHandler(uint8_t interruptNum, InterruptHandlerFunc handler) {
        interruptHandlers[interruptNum] = handler;
    }
    
    void handleInterrupt(uint8_t interruptNum) {
        if (interruptNum < INT_NUM_MAX && interruptHandlers[interruptNum]) {
            interruptHandlers[interruptNum]();
        }
    }
    
private:
    static constexpr uint8_t INT_NUM_MAX = 16;
    InterruptHandlerFunc interruptHandlers[INT_NUM_MAX] = { nullptr };
};

InterruptVectorTable interruptVectorTable;

class InterruptLock {
public:
    InterruptLock() {
        // 禁止中断
        disableInterrupt();
    }
    
    ~InterruptLock() {
        // 允许中断
        enableInterrupt();
    }
    
    InterruptLock(const InterruptLock&) = delete;
    InterruptLock& operator=(const InterruptLock&) = delete;
    
private:
    void disableInterrupt() {
        // 禁止中断的具体实现
    }
    
    void enableInterrupt() {
        // 允许中断的具体实现
    }
};

void criticalSection() {
    InterruptLock lock;
    // 临界区代码
}

class ExceptionHandler {
public:
    ExceptionHandler() {
        try {
            // 可能引发异常的代码
        } catch (const std::exception& e) {
            // 异常处理的具体实现
        }
    }
};

ExceptionHandler exceptionHandler;

class CustomException : public std::exception {
public:
    CustomException(const std::string& message): message(message) {}
    
    virtual const char* what() const noexcept override {
        return message.c_str();
    }
    
private:
    std::string message;
};