#include <Windows.h>
#include <stdio.h>#define SLEEP_TIME 5000                          // 间隔时间
#define LOGFILE "C:\\memstatus.txt"              // 信息输出文件SERVICE_STATUS ServiceStatus;  // 服务状态
SERVICE_STATUS_HANDLE hStatus; // 服务状态句柄void  ServiceMain(int argc, char** argv);
void  CtrlHandler(DWORD request);
int InitService();int WriteToLog(char* str)
{FILE* pfile;fopen_s(&pfile,LOGFILE,"a+");if (pfile==NULL){return -1;}fprintf_s(pfile,"%s\n",str);fclose(pfile);return 0;
}// Service initialization
int InitService()
{ OutputDebugString("Monitoring started.");int result;result = WriteToLog("Monitoring started.");return(result);
}
// Control Handler
void  CtrlHandler(DWORD request)
{switch (request){case SERVICE_CONTROL_STOP:OutputDebugString("Monitoring stopped.");WriteToLog("Monitoring stopped.");ServiceStatus.dwWin32ExitCode = 0; ServiceStatus.dwCurrentState = SERVICE_STOPPED; SetServiceStatus (hStatus, &ServiceStatus);return;case SERVICE_CONTROL_SHUTDOWN:OutputDebugString("Monitoring stopped.");WriteToLog("Monitoring stopped.");ServiceStatus.dwWin32ExitCode = 0; ServiceStatus.dwCurrentState = SERVICE_STOPPED; SetServiceStatus (hStatus, &ServiceStatus);return;default:break;}// Report current statusSetServiceStatus (hStatus, &ServiceStatus);return;
}void  ServiceMain(int argc, char** argv)
{int error;ServiceStatus.dwServiceType = SERVICE_WIN32;ServiceStatus.dwCurrentState = SERVICE_START_PENDING;ServiceStatus.dwControlsAccepted = SERVICE_ACCEPT_SHUTDOWN | SERVICE_ACCEPT_STOP;//在本例中只接受系统关机和停止服务两种控制命令ServiceStatus.dwWin32ExitCode = 0;ServiceStatus.dwServiceSpecificExitCode = 0;ServiceStatus.dwCheckPoint = 0;ServiceStatus.dwWaitHint = 0;hStatus = ::RegisterServiceCtrlHandler("MemoryStatus", (LPHANDLER_FUNCTION)CtrlHandler);if (hStatus == (SERVICE_STATUS_HANDLE)0){WriteToLog("RegisterServiceCtrlHandler failed");return;}WriteToLog("RegisterServiceCtrlHandler success");// Initialize Service error = InitService();if (error) {// Initialization failedServiceStatus.dwCurrentState = SERVICE_STOPPED; ServiceStatus.dwWin32ExitCode = -1; SetServiceStatus(hStatus, &ServiceStatus); return; } // 向SCM 报告运行状态ServiceStatus.dwCurrentState = SERVICE_RUNNING;SetServiceStatus (hStatus, &ServiceStatus);// 下面就开始任务循环了，你可以添加你自己希望服务做的工作MEMORYSTATUS memstatus;while (ServiceStatus.dwCurrentState == SERVICE_RUNNING){char buffer[16];GlobalMemoryStatus(&memstatus);int availmb = memstatus.dwAvailPhys/1024/1024;sprintf_s(buffer,100,"available memory is %dMB",availmb);OutputDebugString(buffer);int result = WriteToLog(buffer);if (result){ServiceStatus.dwCurrentState = SERVICE_STOPPED; ServiceStatus.dwWin32ExitCode      = -1; SetServiceStatus(hStatus, &ServiceStatus);return;}Sleep(SLEEP_TIME);}WriteToLog("service stopped");
}void main()
{SERVICE_TABLE_ENTRY ServiceTable[2];ServiceTable[0].lpServiceName="MemoryStatus";ServiceTable[0].lpServiceProc=(LPSERVICE_MAIN_FUNCTION)ServiceMain;ServiceTable[1].lpServiceName=NULL;ServiceTable[1].lpServiceProc=NULL;StartServiceCtrlDispatcher(ServiceTable);}

命令行操作：

注意我这里在sc create MemortyStatus binpath= D:\MemoryStatus.exe里面有个拼写错误，MemoryStatus写成了MemortyStatus，多了个t,这个没关系，只要你在下面操作时候将错就错就行了。

运行结果：

最后，停止和删除服务：

参考：

http://www.vckbase.com/index.php/wv/1193

http://www.2cto.com/kf/201111/111990.html