C语言实现在windows服务中新建进程的方法

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

#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。