Win32服务Demo 【C】

最新推荐文章于 2019-09-03 10:26:00 发布

cabinriver

最新推荐文章于 2019-09-03 10:26:00 发布

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文章标签： c service buffer table function null

本文链接：https://blog.youkuaiyun.com/cabinriver/article/details/6553139

本文介绍了一个使用C语言编写的Windows服务程序示例，该服务用于监控系统内存使用情况，并将数据记录到日志文件中。服务能够响应停止和关闭系统的控制请求。

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因为要用C写一个win32下的服务，查找资料，发现 Yevgeny Menaker的【用C语言编写 Windows 服务程序的五个步骤】这篇文章写的非常好，又符合我的要求。所以就根椐这篇文章写了一个Demo。下面是源代码，以及我的个人理解。 /******************************************************************** // 作者: CabinRiver // 创建时间: 2011/06/18 10:20 // 功能描述: 记录系统的当前内存使用 //（为服务注册控制器） *********************************************************************/ #include <Windows.h> //#include <Winsvc.h> #include <stdio.h> #include <time.h> //#include <vld.h> //定义常量 //读取内存间隔时间5秒 #define SLEEP_TIME 5000 //日志文件放置位置 #define LOGFILE "D://MyServices//memstatus.txt" #define SERVICE_NAME "MemoryMonitor" //服务状态 SERVICE_STATUS ServiceStatus; SERVICE_STATUS_HANDLE hStatus; //-----------外部函数-----------// //外部函数入口 void ExternFuntion(); //记录系统时间 bool RecordTime(); //记录内存占用值 bool RecordMemory(MEMORYSTATUS* memStatus); void main(int argc, char* argv[]) { SERVICE_TABLE_ENTRY Service_Table[2]; Service_Table[0].lpServiceName = SERVICE_NAME; //服务名 Service_Table[0].lpServiceProc = (LPSERVICE_MAIN_FUNCTION)ServiceMain; //此函数为服务入口点 Service_Table[1].lpServiceName = NULL; Service_Table[1].lpServiceProc = NULL; //启动服务控制器 StartServiceCtrlDispatcher(Service_Table); } void ServiceMain(int argc, char** argv) { //服务类型 ServiceStatus.dwServiceType = SERVICE_WIN32; //服务当前的状态 ServiceStatus.dwCurrentState = SERVICE_START_PENDING; //设置可响应的控制命令 ServiceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN; //错误代码 ServiceStatus.dwWin32ExitCode = 0; ServiceStatus.dwServiceSpecificExitCode = 0; //设置初始化服务所需要的时间 ServiceStatus.dwCheckPoint = 0; ServiceStatus.dwWaitHint = 0; ////为服务注册控制器 //hStatus = RegisterServiceCtrlHandler( SERVICE_NAME, (LPHANDLER_FUNCTION)ControlHandler); if (hStatus == (SERVICE_STATUS_HANDLE)0) { return; } int error = InitService(); if (error) { //服务已终止设置服务状态 ServiceStatus.dwCurrentState = SERVICE_STOPPED; ServiceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR; ServiceStatus.dwServiceSpecificExitCode = 1000; //设置当前状态 SetServiceStatus(hStatus, &ServiceStatus); return; } ServiceStatus.dwCurrentState = SERVICE_RUNNING; SetServiceStatus (hStatus, &ServiceStatus); ////调用外部函数 //ExternFuntion(); return; } void ControlHandler(DWORD request) { switch(request){ case SERVICE_CONTROL_STOP: WriteToLog("Monitoring Service stopped."); ServiceStatus.dwWin32ExitCode = 0; ServiceStatus.dwCurrentState = SERVICE_STOPPED; SetServiceStatus (hStatus, &ServiceStatus); return; case SERVICE_CONTROL_SHUTDOWN: WriteToLog("Monitoring Service stopped."); ServiceStatus.dwWin32ExitCode = 0; ServiceStatus.dwCurrentState = SERVICE_STOPPED; SetServiceStatus (hStatus, &ServiceStatus); return; default: break; } SetServiceStatus(hStatus, &ServiceStatus); return; } //初始化服务 int InitService() { int result = WriteToLog("Monitoring Service Started."); return result; } //写入日志 int WriteToLog(char* str) { //打开 FILE* pLog; fopen_s(&pLog, LOGFILE, "a+"); if (NULL == pLog){ return -1; } //写入 fprintf(pLog, "%s/n", str); fclose(pLog); return 0; } void ExternFuntion() { MEMORYSTATUS* memStatus = (MEMORYSTATUS*)malloc(sizeof(MEMORYSTATUS)); while (SERVICE_RUNNING == ServiceStatus.dwCurrentState) { //记录系统时间 bool bTime = RecordTime(); //记录当前内存使用 bool bMem = RecordMemory(memStatus); if (false == bTime || false == bMem) { free(memStatus); return; } Sleep(SLEEP_TIME); } free(memStatus); } bool RecordTime() { //获取当前系统时间(自定义时间格式) time_t t; tm *tp = (tm*)malloc(sizeof(tm)); t=time(NULL); /*tp = */localtime_s(tp, &t); char time_buffer[20]; sprintf_s(time_buffer, "/n%d-%d-%d %d:%d:%d",tp-> tm_year+1900, tp-> tm_mon+1,tp-> tm_mday,tp-> tm_hour,tp-> tm_min,tp-> tm_sec); //获取当前系统时间(系统默认时间格式) //time_t rawTime; //tm tp; //rawTime = time(NULL); //localtime_s(&tp, &rawTime); //char time_buffer[32]; //localtime_s(&tp, &rawTime); //asctime_s(time_buffer, 32, &tp); //写入文件 int result = WriteToLog(time_buffer); free(tp); if (result) { ServiceStatus.dwCurrentState = SERVICE_STOPPED; ServiceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR; ServiceStatus.dwServiceSpecificExitCode = 1001; SetServiceStatus(hStatus, &ServiceStatus); return false; } return true; } bool RecordMemory(MEMORYSTATUS* memStatus) { //获取内存信息 GlobalMemoryStatus(memStatus); char buffer[50]; sprintf_s(buffer, "当前内存使用: %d", memStatus->dwAvailPhys); //写入文件 int result = WriteToLog(buffer); if (result) { ServiceStatus.dwCurrentState = SERVICE_STOPPED; ServiceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR; ServiceStatus.dwServiceSpecificExitCode = 1002; SetServiceStatus(hStatus, &ServiceStatus); return false; } return true; }

CabinRiver

2011-06-18 11:01:45