perl Win32::Process 进程管理

NAME

Win32::Process - Create and manipulate processes.

SYNOPSIS

  
  
  
  

   
   
   
   
use Win32::Process;
use Win32;

sub ErrorReport{
    print Win32::FormatMessage( Win32::GetLastError() );
}

Win32::Process::Create( $ProcessObj ,
                            "C:\\winnt\\system32\\notepad.exe" ,
                            "notepad temp.txt" ,
                            0,
                            NORMAL_PRIORITY_CLASS,
                            "." )|| die ErrorReport();

$ProcessObj ->Suspend();
$ProcessObj ->Resume();
$ProcessObj ->Wait(INFINITE);
  
  
  
  

DESCRIPTION

This module provides access to the process control functions in the Win32 API.

METHODS

Win32::Process::Create($obj,$appname,$cmdline,$iflags,$cflags,$curdir)

Creates a new process.

    
    
    
    

     
     
     
     
Args:

    $obj            container for process object
    $appname        full path name of executable module
    $cmdline        command line args
    $iflags         flag: inherit calling processes handles or not
    $cflags         flags for creation (see exported vars below)
    $curdir         working dir of new process
    
    
    
    

Returns non-zero on success, 0 on failure.

Win32::Process::Open($obj,$pid,$iflags)

Creates a handle Perl can use to an existing process as identified by $pid. The $iflags is the inherit flag that is passed to OpenProcess. Currently Win32::Process objects created using Win32::Process::Open cannot Suspend or Resume the process. All other calls should work.

Win32::Process::Open returns non-zero on success, 0 on failure.

Win32::Process::KillProcess($pid, $exitcode)

Terminates any process identified by $pid. $exitcode will be set to the exit code of the process.

$ProcessObj->Suspend()

Suspend the process associated with the $ProcessObj.

$ProcessObj->Resume()

Resume a suspended process.

$ProcessObj->Kill($exitcode)

Kill the associated process, have it terminate with exit code $ExitCode.

$ProcessObj->GetPriorityClass($class)

Get the priority class of the process.

$ProcessObj->SetPriorityClass($class)

Set the priority class of the process (see exported values below for options). Note that the ABOVE_NORMAL_PRIORITY_CLASS and BELOW_NORMAL_PRIORITY_CLASS classes only work on Windows 2000 and later.

$ProcessObj->GetProcessAffinityMask($processAffinityMask, $systemAffinityMask)

Get the process affinity mask. This is a bitvector in which each bit represents the processors that a process is allowed to run on.

$ProcessObj->SetProcessAffinityMask($processAffinityMask)

Set the process affinity mask. Only available on Windows NT.

$ProcessObj->GetExitCode($exitcode)

Retrieve the exitcode of the process. Will return STILL_ACTIVE if the process is still running. The STILL_ACTIVE constant is only exported by explicit request.

$ProcessObj->Wait($timeout)

Wait for the process to die. $timeout should be specified in milliseconds. To wait forever, specify the constant INFINITE.

$ProcessObj->GetProcessID()

Returns the Process ID.

Win32::Process::GetCurrentProcessID()

Returns the current process ID, which is the same as $$. But not on cygwin, where $$ is the cygwin-internal PID and not the windows PID. On cygwin GetCurrentProcessID() returns the windows PID as needed for all the Win32::Process functions.

EXPORTS

The following constants are exported by default:

  
  
  
  

   
   
   
   
CREATE_DEFAULT_ERROR_MODE
CREATE_NEW_CONSOLE
CREATE_NEW_PROCESS_GROUP
CREATE_NO_WINDOW
CREATE_SEPARATE_WOW_VDM
CREATE_SUSPENDED
CREATE_UNICODE_ENVIRONMENT
DEBUG_ONLY_THIS_PROCESS
DEBUG_PROCESS
DETACHED_PROCESS
HIGH_PRIORITY_CLASS
IDLE_PRIORITY_CLASS
INFINITE
NORMAL_PRIORITY_CLASS
REALTIME_PRIORITY_CLASS
THREAD_PRIORITY_ABOVE_NORMAL
THREAD_PRIORITY_BELOW_NORMAL
THREAD_PRIORITY_ERROR_RETURN
THREAD_PRIORITY_HIGHEST
THREAD_PRIORITY_IDLE
THREAD_PRIORITY_LOWEST
THREAD_PRIORITY_NORMAL
THREAD_PRIORITY_TIME_CRITICAL
  
  
  
  

The following additional constants are exported by request only:

  
  
  
  

   
   
   
   
ABOVE_NORMAL_PRIORITY_CLASS
BELOW_NORMAL_PRIORITY_CLASS
STILL_ACTIVE
  
  
  
  

LICENSE

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.