在Windows和Linux下实现C++服务程序自启动的实战指南

#include <Windows.h>
#include <tchar.h>

SERVICE_STATUS        g_ServiceStatus = {0};
SERVICE_STATUS_HANDLE g_StatusHandle = NULL;

// 服务主函数
VOID WINAPI ServiceMain(DWORD argc, LPTSTR* argv);
// 服务控制处理函数
VOID WINAPI ServiceCtrlHandler(DWORD ctrlCode);

// 服务工作线程（实际业务逻辑）
VOID ServiceWorker();

int main() {
    SERVICE_TABLE_ENTRY serviceTable[] = {
        { _T("MyWinService"), ServiceMain },
        { NULL, NULL }
    };
    StartServiceCtrlDispatcher(serviceTable);
    return 0;
}

VOID WINAPI ServiceMain(DWORD argc, LPTSTR* argv) {
    g_StatusHandle = RegisterServiceCtrlHandler(_T("MyWinService"), ServiceCtrlHandler);
    g_ServiceStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
    g_ServiceStatus.dwCurrentState = SERVICE_START_PENDING;
    SetServiceStatus(g_StatusHandle, &g_ServiceStatus);

    // 初始化工作...
    g_ServiceStatus.dwCurrentState = SERVICE_RUNNING;
    SetServiceStatus(g_StatusHandle, &g_ServiceStatus);

    ServiceWorker(); // 执行实际任务
}

VOID WINAPI ServiceCtrlHandler(DWORD ctrlCode) {
    switch (ctrlCode) {
        case SERVICE_CONTROL_STOP:
            g_ServiceStatus.dwCurrentState = SERVICE_STOP_PENDING;
            SetServiceStatus(g_StatusHandle, &g_ServiceStatus);
            // 清理资源...
            g_ServiceStatus.dwCurrentState = SERVICE_STOPPED;
            break;
        default:
            break;
    }
    SetServiceStatus(g_StatusHandle, &g_ServiceStatus);
}

VOID ServiceWorker() {
    while (g_ServiceStatus.dwCurrentState == SERVICE_RUNNING) {
        // 服务主循环（例如监听端口、处理任务等）
        Sleep(1000);
    }
}

sc create MyWinService binPath= "C:\Path\To\WinService.exe" start= auto

#include <iostream>
#include <unistd.h>
#include <signal.h>
#include <sys/stat.h>
#include <fstream>

bool g_Running = true;

void signalHandler(int signum) {
    if (signum == SIGTERM) g_Running = false;
}

void daemonize() {
    pid_t pid = fork();
    if (pid < 0) exit(EXIT_FAILURE);
    if (pid > 0) exit(EXIT_SUCCESS);
    umask(0);
    if (setsid() < 0) exit(EXIT_FAILURE);
    // 关闭标准文件描述符
    close(STDIN_FILENO);
    close(STDOUT_FILENO);
    close(STDERR_FILENO);
}

int main() {
    daemonize();
    signal(SIGTERM, signalHandler);
    while (g_Running) {
        // 服务主循环（例如写入日志、处理任务）
        std::ofstream log("/var/log/myservice.log", std::ios::app);
        log << "Service is running...\n";
        sleep(5);
    }
    return 0;
}

[Unit]
Description=My Linux Service

[Service]
ExecStart=/usr/local/bin/LinuxService
Restart=always
Type=simple

[Install]
WantedBy=multi-user.target

sudo systemctl daemon-reload
sudo systemctl enable mylinuxservice
sudo systemctl start mylinuxservice