本文实例讲述了C语言实现在windows服务中新建进程的方法。分享给大家供大家参考。具体如下：
运行环境：visual stdio 2008
文件名：testService.c
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#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); //由于我自己在服务里建了一个进程，所以当服务停止时需要将建的进程也停掉 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); //注册控制响应程序 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 ; } // 接下来可以做你要做的事了，我这里新建了一个进程 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, //在服务运行后新建了一个进程，实际的工作都由新建的进程完成 szCommandLine, NULL, NULL, FALSE, 0, NULL, cwd, //这个参数必不可少，而且要是绝对路径，不然服务会找不到创建新进程所需文件所在目录 &si, &pi)) { sprintf(buf, "CreateProcess failed (%d).\n", GetLastError()); WriteToLog(buf); } else { // 不使用的句柄最好关掉 //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函数 return 0; } |
使用方法：
安装服务：sc create testService binpath= c:\testService.exe
删除服务： sc delete testService
希望本文所述对大家的C语言程序设计有所帮助。
