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# Copyright (c) 2000 by Chad Johnston. All rights reserved. package Win32::SystemInfo; use Win32::API; use Win32::TieRegistry; use strict; use vars qw($VERSION); $VERSION = '0.01'; use constant PROCESSOR_INTEL_386 => 386; use constant PROCESSOR_INTEL_486 => 486; use constant PROCESSOR_INTEL_PENTIUM => 586; use constant PROCESSOR_MIPS_R4000 => 4000; use constant PROCESSOR_ALPHA_21064 => 21064; use constant PROCESSOR_ARCHITECTURE_INTEL => 0; use constant PROCESSOR_ARCHITECTURE_MIPS => 1; use constant PROCESSOR_ARCHITECTURE_ALPHA => 2; use constant PROCESSOR_ARCHITECTURE_PPC => 3; use constant PROCESSOR_ARCHITECTURE_UNKNOWN => 0xFFFF; #================== sub MemoryStatus (\%;$) { #================== # my $return = shift; #hash to return my $ret_type = shift; #what format does the user want? my %fmt_types = ( B => 1, KB => 1024, MB => 1024*1024, GB => 1024*1024*1024); my @params = qw(MemLoad TotalPhys AvailPhys TotalPage AvailPage TotalVirtual AvailVirtual); my %results; #results of fn call my $MemFormat; #divisor for format my $dwMSLength; #validator from fn call $MemFormat = ($ret_type =~ /^[BKMG]B?$/) ? $fmt_types{$ret_type} : $fmt_types{B} +; my $GlobalMemoryStatus ||= new Win32::API("kernel32", "GlobalMemoryStatus", ["P"], "V") or ret +urn; my $MEMORYSTATUS = pack "L8",(0, 0, 0, 0, 0, 0, 0, 0); $GlobalMemoryStatus->Call($MEMORYSTATUS); ($dwMSLength, @results{@params}) = unpack "L8", $MEMORYSTATUS; return undef if ($dwMSLength == 0); if (keys(%$return) == 0) { foreach (@params) { $return->{$_} = ($_ eq "MemLoad") ? $results{$_} : $results{$_}/$M +emFormat; } } else { foreach (@params){ $return->{$_} = $results{$_}/$MemFormat unless (!defined($return- +>{$_})); } } 1; } #=========================== my $check_OS = sub () # Attempt to make this as private as possible { my $dwPlatformId; my $osType; my $GetVersionEx ||= new Win32::API("kernel32", "GetVersionEx", ["P"] +, "N") or return undef; my $OSVERSIONINFO = pack "LLLLLa128",(148, 0, 0, 0, 0, "\0"x128); return undef if $GetVersionEx->Call($OSVERSIONINFO) == 0; $dwPlatformId = (unpack "LLLLLa128", $OSVERSIONINFO)[4]; if ($dwPlatformId == 2) { $osType ="WinNT"; } elsif ($dwPlatformId == 1) { $osType = "Win9x"; } return ($osType ne "") ? $osType : undef; }; #========================== #========================== sub ProcessorInfo (;\%) { my $allHash = shift; # Determine operating system return undef unless my $OS = &$check_OS; # Make API call my $GetSystemInfo ||= new Win32::API("kernel32", "GetSystemInfo", ["P +"], "V") or return undef; my $SYSTEM_INFO = pack("L9",0,0,0,0,0,0,0,0,0); $GetSystemInfo->Call($SYSTEM_INFO); my $proc_type; # Holds 386,586,PPC, etc my $num_proc; # number of processors if ($OS eq "Win9x") { ($num_proc, $proc_type) = (unpack("L9",$SYSTEM_INFO))[5,6]; } elsif ($OS eq "WinNT") { my $proc_level; # first digit of Intel chip (5,6,etc) my $proc_val; ($proc_val, $num_proc, $proc_level) = (unpack("SSLLLLLLLSS",$SYSTEM_INFO))[0,6,9]; if ($proc_val == PROCESSOR_ARCHITECTURE_INTEL) { $proc_type = $proc_level . "86"; } elsif ($proc_val == PROCESSOR_ARCHITECTURE_MIPS) { $proc_type = "MIPS"; } elsif ($proc_val == PROCESSOR_ARCHITECTURE_PPC) { $proc_type = "PPC"; } elsif ($proc_val == PROCESSOR_ARCHITECTURE_ALPHA) { $proc_type = "ALPHA"; } else { $proc_type = "UNKNOWN"; } } # if a hash was supplied, fill it with all info if (defined($allHash)) { $allHash->{NumProcessors} = $num_proc; $Registry->Delimiter("/"); for (my $i = 0; $i < $num_proc; $i++) { my $procinfo = $Registry->{"LMachine/Hardware/Description/System/CentralProcessor +/$i"}; my %prochash; $prochash{Identifier} = $procinfo->GetValue("Identifier"); $prochash{VendorIdentifier} = $procinfo->GetValue("VendorIdentifie +r"); $prochash{MHZ} = oct($procinfo->GetValue("~MHz")); $allHash->{"Processor$i"} = \%prochash; } } return $proc_type; } 1; __END__ =head1 NAME Win32::SystemInfo - Memory and Processor information on Win32 systems =head1 SYNOPSIS use Win32::SystemInfo; # Get Memory Information my %mHash; if (Win32::SystemInfo::MemoryStatus(%mHash)) { ...process results... } To get specific values: my %mHash = (TotalPhys => 0, AvailPhys => 0); if (Win32::SystemInfo::MemoryStatus(%mHash)) { ...mHash contains only TotalPhys and AvailPhys values... } Change the default return value: Win32::SystemInfo::MemoryStatus(%mHash,"MB"); # Get Processor Information my $proc = Win32::SystemInfo::ProcessorInfo(); if ($proc >= 586) { ... } my %phash; Win32::SystemInfo::ProcessorInfo(%phash); for (my $i = 0; $i < $phash{NumProcessors}; $i++) { print "Speed of processor $i: " . $phash{"Processor$i"}{MHZ} . "M +Hz\n"; } =head1 ABSTRACT With this module you can get total/free memory on Win32 systems, including installed RAM (physical memory) and page file. This module w +ill also let you access processor information, including processor family (386,486,etc), speed, vendor, and revision information. The current version of Win32::SystemInfo is available at: [nowhere yet] =head1 DESCRIPTION =over 4 Module provides two functions: =item MemoryStatus B<Win32::SystemInfo::MemoryStatus>(%mHash,[$format]); %mHash - The hash that will receive the result +s. Certain values can be set prior to th +e call to retrieve a subset. (See below +) $format - Optional parameter. Used to set the o +rder of magnitude of the results. (See bel +ow) Determines the current memory status of a Win32 machine. Populates %mHash with the results. Function returns undef on failure. Values returned through the hash: MemLoad - Windows NT 3.1 to 4.0: The percentage + of approximately the last 1000 pages of +physical memory that is in use. - Windows 2000: The approximate percent +age of total physical memory that is in use. TotalPhys - Total amount of physical memory (RAM) +. AvailPhys - Available physical memory (RAM). TotalPage - Allocated size of page (swap) file. AvailPage - Available page file memory. TotalVirtual - Total physical + maximum page file. AvailableVirtual - Total amount of available memory. Values returned through the hash can also be specified by setting them before the function is called. my %mHash = (TotalPhys => 0); Win32::MemoryInfo::MemoryStatus(%mHash); Will return only the total physical memory. MemoryStatus return values in bytes by default. This can be changed + with the $format parameter. Valid values for $format are: B - Bytes (default) KB - Kilobytes MB - Megabytes GB - Gigabytes =item ProcessorInfo $proc = B<Win32::SystemInfo::ProcessorInfo>([%pHash]); Determines the processor information of a Win32 computer. Returns a + "quick" value or undef on failure. Can also populate %pHash with detailed i +nformation on all processors present in the system. $proc - Contains a numerical representation +of the - processor level for Intel machines. +For - example, a Pentium will return 586. - For non-Intel Windows NT systems, th +e - possible return values are: - PPC: PowerPC - MIPS: MIPS architecture - ALPHA: Alpha architecture - UNKNOWN: Unknown architecture %pHash - Optional parameter. Will be filled w +ith - information about all processors. Values returned through hash: NumProcessors - The number of processors installed ProcessorN - A hash containing all info for proce +ssor N Each ProcessorN hash contains the values: Identifier - The identifier string for the proces +sor - as found in the registry. The comput +er I'm - currently using returns the string - "x86 Family 6 Model 7 Stepping 3" VendorIdentifier - The vendor name of the processor MHZ - The speed in MHz of the processor =back No functions are exported. =head1 INSTALLATION This module can be used by simply placing it in your /Win32 directory somewhere in @INC. Use pod2html to build a html version of this POD. This module requires Win32::API module by Aldo Calpini Win32::TieRegistry by Tye McQueen =head1 CAVEATS The information returned by the MemoryStatus function is volatile. There is no guarantee that two sequential calls to this function will return the same information. On computers with more than 4 GB of memory, the MemoryStatus function can return incorrect information. Windows 2000 reports a value of -1 to indicate an overflow. Earlier versions of Windows NT report a value that is the real amount of memory, modulo 4 GB. On Intel x86 computers with more than 2 GB and less than 4 GB of memor +y, the MemoryStatus function will always return 2 GB for TotalPhys. Similarly, if the total available memory is between 2 and 4 GB, AvailP +hys will be rounded down to 2 GB. The ProcessorInfo function has been only tested in these environments: Windows 98, Single Pentium II processor Windows NT 4.0, Single Pentium III processor All feedback on other configurations is greatly welcomed. This module has been created and tested on Windows 98 and WinNT 4.0 on ActiveState port of Perl 5.6. It has B<not> been tested on Windows 200 +0 yet. =head1 CHANGES 0.01 - Initial Release =head1 BUGS Please report. =head1 VERSION This man page documents Win32::SystemInfo version 0.01 September 7, 2000. =head1 AUTHOR Chad Johnston C<<>cjohnston@rockstardevelopment.comC<>> =head1 COPYRIGHT Copyright (C) 2000 by Chad Johnston. All rights reserved. =head1 LICENSE This package is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =cut

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