michael@0: # This Source Code Form is subject to the terms of the Mozilla Public
michael@0: # License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0: # file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0: 
michael@0: import os, sys, ctypes, ctypes.wintypes
michael@0: 
michael@0: class VM_COUNTERS(ctypes.Structure):
michael@0:     _fields_ = [("PeakVirtualSize", ctypes.wintypes.ULONG),
michael@0:                 ("VirtualSize", ctypes.wintypes.ULONG),
michael@0:                 ("PageFaultCount", ctypes.wintypes.ULONG),
michael@0:                 ("PeakWorkingSetSize", ctypes.wintypes.ULONG),
michael@0:                 ("WorkingSetSize", ctypes.wintypes.ULONG),
michael@0:                 ("QuotaPeakPagedPoolUsage", ctypes.wintypes.ULONG),
michael@0:                 ("QuotaPagedPoolUsage", ctypes.wintypes.ULONG),
michael@0:                 ("QuotaPeakNonPagedPoolUsage", ctypes.wintypes.ULONG),
michael@0:                 ("QuotaNonPagedPoolUsage", ctypes.wintypes.ULONG),
michael@0:                 ("PagefileUsage", ctypes.wintypes.ULONG),
michael@0:                 ("PeakPagefileUsage", ctypes.wintypes.ULONG)
michael@0:                 ]
michael@0: 
michael@0: def get_vmsize(handle):
michael@0:     """
michael@0:     Return (peak_virtual_size, virtual_size) for the process |handle|.
michael@0:     """
michael@0:     ProcessVmCounters = 3
michael@0:     vmc = VM_COUNTERS()
michael@0:     if ctypes.windll.ntdll.NtQueryInformationProcess(int(handle),
michael@0:                                                      ProcessVmCounters,
michael@0:                                                      ctypes.byref(vmc),
michael@0:                                                      ctypes.sizeof(vmc),
michael@0:                                                      None) == 0:
michael@0:        return (vmc.PeakVirtualSize, vmc.VirtualSize)
michael@0: 
michael@0:     return (-1, -1)
michael@0: 
michael@0: if __name__ == '__main__':
michael@0:     PROCESS_QUERY_INFORMATION = 0x0400
michael@0:     for pid in sys.argv[1:]:
michael@0:         handle = ctypes.windll.kernel32.OpenProcess(PROCESS_QUERY_INFORMATION,
michael@0:                                                     0, # no inherit
michael@0:                                                     int(pid))
michael@0:         if handle:
michael@0:             print "Process %s:" % pid
michael@0:             vsize, peak_vsize = get_vmsize(handle)
michael@0:             print "peak vsize: %d" % peak_vsize
michael@0:             ctypes.windll.kernel32.CloseHandle(handle)
michael@0:         else:
michael@0:             print "Couldn't open process %s" % pid