c/c++单例模式类的混合编译案例详解

#include "interFace.h"
#include <stdint.h>
#include <stdio.h>

int main()
{
    set_log_count(10);
    uint32_t count = get_log_count();
    printf("The conut is %d\n", count);
}

#ifndef LOG_CLASS_H
#define LOG_CLASS_H
#include <stdint.h>
#include <stdio.h>

#define FCA_BOOL uint16_t
#define FCA_TRUE 1
#define FCA_FALSE 0
class logClass
{
public:
    static logClass *getInstance()
    {
        static logClass m_plogClass;
        return &m_plogClass;
    }

    FCA_BOOL setLogCount(uint32_t num);
    uint32_t getLogCount();

private:
    logClass();
    logClass(const logClass &) = delete;
    logClass &operator=(const logClass &) = delete;
    ~logClass();
    uint32_t m_logCount;
    static logClass* m_plogClass;
};
#endif

#include "logClass.h"

logClass::logClass()
{
    printf("log class construct!!!!!\n");
}

logClass::~logClass()
{
    printf("log class destruct!!\n");
}

FCA_BOOL logClass::setLogCount(uint32_t num)
{
    m_logCount = num;
    return FCA_TRUE;
}

uint32_t logClass::getLogCount()
{
    return m_logCount;
}

#include "interFace.h"
#include "logClass.h"

logClass* log = logClass::getInstance();

FCA_BOOL set_log_count(uint32_t num)
{
    FCA_BOOL ret = log->setLogCount(num);
    return ret;
}

uint32_t get_log_count()
{
    return log->getLogCount();
}

#ifndef INTERFACE_H
#define INTERFACE_H
#include <stdint.h>

#define FCA_BOOL uint16_t
#define FCA_TRUE 1
#define FCA_FALSE 0

#ifdef __cplusplus
extern "C"
{
#endif
FCA_BOOL set_log_count(uint32_t num);
uint32_t get_log_count();
#ifdef __cplusplus
}
#endif
#endif

cmake_minimum_required(VERSION 3.0)
project(MYLOGTEST CXX C)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")  #设置c++的编译选项
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")  #设置c的编译选项
include_directories(include)
add_executable(mylogtest main.c src/logClass.cpp src/interFace.cpp)