<package><job id="DrainNGenQueue.wsf">
<script language="JScript">
var wsh = WScript.CreateObject("WScript.Shell");
var fso = WScript.CreateObject("Scripting.FileSystemObject");
var is64bit = function () {
if (wsh.ExpandEnvironmentStrings("%PROCESSOR_ARCHITECTURE%").indexOf("64") > 0)
return true;
return (wsh.ExpandEnvironmentStrings("%PROCESSOR_ARCHITEW6432%").indexOf("64") > 0);
}();
var isV4Installed = function () {
var v4NgenLoc = wsh.ExpandEnvironmentStrings("%windir%\\Microsoft.NET\\Framework\\v4.0.30319\\ngen.exe");
return fso.FileExists(v4NgenLoc);
}();
// Run an exe, collecting its exit code, stdout & stderr, optionally echoing the results to the window
var runToCompletion = function (exe, arguments, echo) {
var makeResult = function (exitCode, stdOut, stdErr) {
return { ExitCode: exitCode, StdOut: stdOut, StdErr: stdErr };
}
var getStream = function (strm) {
var line = "";
if (!strm.AtEndOfStream) {
line = strm.ReadAll();
if (echo)
WScript.Echo(line);
}
return line;
}
var process = wsh.Exec(exe + " " + arguments);
var output = "";
var error = "";
while (process.Status == 0) {
WScript.Sleep(50);
output += getStream(process.StdOut);
error += getStream(process.StdErr);
}
output += getStream(process.StdOut);
error += getStream(process.StdErr);
return makeResult(process.ExitCode, output, error);
}
var ver = function () {
var ver = runToCompletion(wsh.ExpandEnvironmentStrings("%windir%\\system32\\cmd.exe"), "/C ver");
var rgx = / ([0-9]+)\.([0-9]+)\.[0-9]+/;
var res = rgx.exec(ver.StdOut);
return {major: res[1], minor :res[2]};
}();
// true if the OS version is 6.2 or later
var isOSWin8OrLater = (ver.major == 6 && ver.minor >= 2) || (ver.major > 6);
var preVista = (ver.major < 6);
// This re-launches the script under an elevated cscript window if it's either
// not already running as elevated, or it's running under wscript.exe instead.
// Note that is doesn't pass any arguments, because this particular script doesn't have any
var validateElevatedCScript = function () {
// Return "Elevated", "Not elevated", "Unknown", or "Error" regarding elevation status
var elevatedStatus = function () {
if (preVista)
return "Unknown";
// From technet, translated from VBScript & munged
var whoami = runToCompletion("whoami", "/groups", false);
if (whoami.ExitCode == 0) {
if (whoami.StdOut.indexOf("S-1-16-12288") >= 0) {
return "Elevated";
} else if (whoami.StdOut.indexOf("S-1-16-8192") >= 0) {
return "Not elevated";
} else {
return "Unknown";
}
} else if (whoami.StdErr.length != 0) {
WScript.Echo(whoami.StdErr.ReadAll());
}
return "Error";
}();
var shell = WScript.CreateObject("Shell.Application");
var scriptHost = WScript.FullName; // This is the path to cscript.exe or wscript.exe
var wsfPath = WScript.ScriptFullName; // This is the full path to the .wsf file being run
var isCScript = scriptHost.toLowerCase().indexOf("\\cscript.exe") >= 0;
if (isCScript && elevatedStatus != "Not elevated")
return;
if (!isCScript)
scriptHost = fso.GetParentFolderName(scriptHost) + "\\cscript.exe";
if (preVista)
shell.ShellExecute(scriptHost, "\"" + wsfPath + "\"");
else
shell.ShellExecute(scriptHost, "\"" + wsfPath + "\"", "", "runas", 1);
WScript.Quit(0);
}();
var drainNGenQueue = function (ver) {
var dotNetRoot = wsh.ExpandEnvironmentStrings("%windir%\\Microsoft.NET\\Framework");
var getNGenBinary = function (is64Bit, ver) {
return dotNetRoot + (is64Bit ? "64" : "") + "\\" + ver + "\\ngen.exe";
}
var ngen32 = getNGenBinary(false, ver);
var ngen64 = getNGenBinary(true, ver);
var argument = "executeQueuedItems";
runToCompletion(ngen32, argument, true);
if (is64bit)
runToCompletion(ngen64, argument, true);
}
var drainAppStoreQueue = function () {
var schTasks = wsh.ExpandEnvironmentStrings("%windir%\\System32\\schtasks.exe");
var arguments = "/run /Tn \"\\Microsoft\\Windows\\.NET Framework\\.NET Framework NGEN v4.0.30319";
runToCompletion(schTasks, arguments + "\"", true);
if (is64bit)
runToCompletion(schTasks, arguments + " 64\"", true);
}
drainNGenQueue(isV4Installed ? "v4.0.30319" : "v2.0.50727");
if (isOSWin8OrLater) {
drainAppStoreQueue();
}
</script>
</job></package>
