Hi all,
Ruby 1.8.1-13
Windows 2000
Win32OLE 0.5.5
I’m trying to build a pure Ruby version of sys-proctable for Windows
using the WMI interface. The code below gives me a segfault if I use
the block form, but not if I use the non-block form. Also, if I
remove the ‘private_page_count’ from the @fields array and the
’proc.PrivatePageCount’ in the struct below, it works fine.
Experiments seem to show that it has problems with members that are
converted from UINT64’s, but I can’t be 100% certain because my
results have been sporadic, but trying to add any of the remaining
UINT64 bit fields that I’ve left out (WriteOperationCount,
WriteTransferCount, etc) causes a segfault.
Various attempts at calling GC.start manually in specific places did
not work.
For a list of the fields and their types see
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/win32_process.asp
Any ideas? Help appreciated.
Dan
wmi.rb
require “win32ole”
module Sys
class ProcTable
@host = ‘.’ # Default to localhost
@fields = %w/
caption
creation_class_name
creation_date
cs_creation_class_name
cs_name
description
executable_path
execution_state
handle
hanle_count
install_date
kernel_mode_time
maximum_working_set_size
minimum_working_set_size
name
os_creation_class_name
os_name
other_operation_count
other_transfer_count
page_faults
page_file_usage
peak_virtual_size
ppid
peak_working_set_size
priority
private_page_count
pid
quota_non_paged_pool_usage
quota_paged_pool_usage
quota_peak_non_paged_pool_usage
quota_non_paged_pool_usage
session_id
termination_date
thread_count
windows_version
/
ProcTableStruct = Struct.new("ProcTableStruct",*@fields)
def self.fields
@fields
end
def self.host
@host
end
def self.host=(host)
@host = host
end
def self.ps
a = []
connect_string = 'winmgmts://' + self.host
mgmt = WIN32OLE.connect(connect_string)
mgmt.InstancesOf("win32_process").each{ |proc|
s = ProcTableStruct.new(
proc.Caption,
proc.CreationClassName,
proc.CreationDate,
proc.CSCreationClassName,
proc.CSName,
proc.Description,
proc.ExecutablePath,
proc.ExecutionState,
proc.Handle,
proc.HandleCount,
proc.InstallDate,
proc.KernelModeTime,
proc.MaximumWorkingSetSize,
proc.MinimumWorkingSetSize,
proc.Name,
proc.OSCreationClassName,
proc.OSName,
proc.OtherOperationCount,
proc.OtherTransferCount,
proc.PageFaults,
proc.PageFileUsage,
proc.ParentProcessId,
proc.PeakVirtualSize,
proc.PeakWorkingSetSize,
proc.Priority,
proc.PrivatePageCount,
proc.ProcessId,
proc.QuotaNonPagedPoolUsage,
proc.QuotaPagedPoolUsage,
proc.QuotaPeakNonPagedPoolUsage,
proc.QuotaPeakPagedPoolUsage,
proc.SessionId,
proc.TerminationDate,
proc.ThreadCount,
proc.WindowsVersion
)
if block_given?
yield s
else
a.push(s)
end
}
return a unless block_given?
end
end
end
if $0 == FILE
include Sys
This segfaults
ProcTable.ps{ |pstruct|
p pstruct
}
a = ProcTable.ps # this works fine
verify fields to struct count
p ProcTable::ProcTableStruct.members.length
p ProcTable.fields.length
end
