本文實例講述了C語言實現在windows服務中新建進程的方法。分享給大家供大家參考。具體如下:
運行環境:visual stdio 2008
文件名:testService.c
#include <windows.h> #include <stdio.h> #include <time.h> #include <tchar.h> HANDLE hMutex; SERVICE_STATUS ServiceStatus; SERVICE_STATUS_HANDLE ServiceStatusHandle; PROCESS_INFORMATION pi; //Service Control Handler Function void WINAPI CmdControl(DWORD dwCode) { switch(dwCode) { case SERVICE_CONTROL_PAUSE: ServiceStatus.dwCurrentState = SERVICE_PAUSED; break; case SERVICE_CONTROL_CONTINUE: ServiceStatus.dwCurrentState = SERVICE_RUNNING; break; case SERVICE_CONTROL_STOP: WaitForSingleObject(hMutex,INFINITE); //if (WaitForSingleObject(pi.hProcess, 5000) != WAIT_OBJECT_0) TerminateProcess(pi.hProcess,0); //由于我自己在服務里建了一個進程,所以當服務停止時需要將建的進程也停掉 ServiceStatus.dwCurrentState = SERVICE_STOPPED; ServiceStatus.dwWin32ExitCode = 0; ServiceStatus.dwCheckPoint = 0; ServiceStatus.dwWaitHint = 0; if(SetServiceStatus(ServiceStatusHandle,&ServiceStatus)==0) { printf("SetServiceStatus in CmdControl in Switch Error !/n"); } return ; case SERVICE_CONTROL_INTERROGATE: break; default: break; } if(SetServiceStatus(ServiceStatusHandle,&ServiceStatus)==0) { printf("SetServiceStatus in CmdControl out Switch Error !/n"); } return ; } int WriteToLog(char* str) { FILE* log; log = fopen("dma_ws.log", "a+"); if (log == NULL) return -1; fprintf(log, "%s/n", str); fclose(log); return 0; } //Service ServiceMain Function void WINAPI CmdStart(DWORD dwArgc,LPTSTR *lpArgv) { ServiceStatus.dwServiceType = SERVICE_WIN32; ServiceStatus.dwCurrentState = SERVICE_START_PENDING; ServiceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ServiceStatus.dwServiceSpecificExitCode = 0; ServiceStatus.dwWin32ExitCode = 0; ServiceStatus.dwCheckPoint = 0; ServiceStatus.dwWaitHint = 0; ServiceStatusHandle=RegisterServiceCtrlHandler(TEXT("ntkrnl"),CmdControl); //注冊控制響應程序 if (ServiceStatusHandle == 0) { printf("RegisterServiceCtrlHandler Error !/n"); return ; } ServiceStatus.dwCurrentState = SERVICE_RUNNING; ServiceStatus.dwCheckPoint = 0; ServiceStatus.dwWaitHint = 0; if(SetServiceStatus(ServiceStatusHandle,&ServiceStatus)==0) { printf("SetServiceStatus in CmdStart Error !/n"); return ; } // 接下來可以做你要做的事了,我這里新建了一個進程 STARTUPINFO si; ZeroMemory( &si, sizeof(si) ); si.cb = sizeof(si); si.wShowWindow = true; ZeroMemory( &pi, sizeof(pi) ); char buf[100] ={0}; TCHAR szCommandLine[] = TEXT("C://Program Files (x86)//IronPython 2.7.1//ipy.exe C://DXMonitorSystem//DXHttpServer.py"); TCHAR cwd[] = TEXT("C://DXMonitorSystem"); if (!CreateProcess(NULL, //在服務運行后新建了一個進程,實際的工作都由新建的進程完成 szCommandLine, NULL, NULL, FALSE, 0, NULL, cwd, //這個參數必不可少,而且要是絕對路徑,不然服務會找不到創建新進程所需文件所在目錄 &si, &pi)) { sprintf(buf, "CreateProcess failed (%d)./n", GetLastError()); WriteToLog(buf); } else { // 不使用的句柄最好關掉 //CloseHandle(pi.hThread); //CloseHandle(pi.hProcess); sprintf(buf, "new process ID:%d/n",pi.dwProcessId); sprintf(buf+strlen(buf), "new process master thread ID:%d/n",pi.dwThreadId); WriteToLog(buf); } WriteToLog("hello,world/n"); return ; } int main() { SERVICE_TABLE_ENTRY DispatchTable[] = { {TEXT("ntkrnl"),CmdStart}, {NULL ,NULL } }; StartServiceCtrlDispatcher(DispatchTable); //注意:CmdStart函數 return 0; }
使用方法:
安裝服務:sc create testService binpath= c:/testService.exe
刪除服務: sc delete testService
希望本文所述對大家的C語言程序設計有所幫助。
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