#!python  
   
import win32serviceutil   
import win32service   
import win32event  
import os   
from subprocess import Popen, PIPE  
import json  
import signal  
run_proc = None  
   
class DMA_WS(win32serviceutil.ServiceFramework):   
    _svc_name_ = "DMA_WS"  
    _svc_display_name_ = "DMA_WS"  
    def __init__(self, args):   
        win32serviceutil.ServiceFramework.__init__(self, args)   
        self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)   
   
    def SvcStop(self):           
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)   
        win32event.SetEvent(self.hWaitStop)   
   
    def SvcDoRun(self):  
        f = file('C:/DXMonitorSystem/dma.conf')  
        host = json.load(f)  
        f.close()  
        dxsrv = os.path.join(host['app_path'], 'DXHttpServer.py')  
        run_proc = Popen([host['ironpython'], dxsrv],  
                        stdin=PIPE, stdout=PIPE, stderr=PIPE, shell=False,  
                        cwd=host['app_path']) #这里新建进程，注意cwd参数必不可少且要是绝对路径  
        #res, err = run_proc.communicate()  
        #这个函数内的上面部分都是逻辑处理的部分，可以根据自己的需求订制，但下面这行代码任何服务都需要  
        win32event.WaitForSingleObject(self.hWaitStop, win32event.INFINITE)   
        run_proc.kill() # 用于关闭服务所创建的子进程  
        #os.kill(run_proc.pid, signal.SIGTERM)  
   
if __name__=='__main__':  
    win32serviceutil.HandleCommandLine(DMA_WS)  


#//python/5168