/*
* Delete an assembly that is out of date, as well as the associated files
*/
internal static void RemoveOutOfDateAssembly(string assemblyName)
{
DirectoryInfo directory = new DirectoryInfo(HttpRuntime.CodegenDirInternal);
FileInfo[] files = directory.GetFiles(assemblyName + ".*");
foreach (FileInfo f in files)
{
try {
// First, just try to delete the file
f.Delete();
}
catch (Exception) {
try {
// If the delete failed, rename it to ".delete", so it'll get
// cleaned up next time by RemoveOldTempFiles()
// Don't do that if it already has the delete extension
if (f.Extension != ".delete")
{
f.MoveTo(f.FullName + ".delete");
}
}
catch (Exception) {
// Ignore all exceptions
Debug.Assert(false, "Cannot delete " + f.Name + " from " + directory);
}
}
}
}
/*
* Set some fields that are needed for code generation
*/
internal BaseCompiler(TemplateParser parser)
{
_parser = parser;
_baseClassType = Parser.BaseType;
Debug.Assert(_baseClassType != null);
}
/// <include file='doc\BaseCompiler.uex' path='docs/doc[@for="BaseCompiler.GetGeneratedClassName"]/*' />
/// <devdoc>
/// Create a name for the generated class
/// </devdoc>
private string GetGeneratedClassName()
{
string className;
// If the user specified the class name, just use that
if (Parser.GeneratedClassName != null)
{
return(Parser.GeneratedClassName);
}
// If we know the input file name, use it to generate the class name
if (Parser.InputFile != null)
{
// Make sure we have the file name's correct case (ASURT 59179)
className = Util.CheckExistsAndGetCorrectCaseFileName(Parser.InputFile);
Debug.Assert(className != null);
// Get rid of the path
className = Path.GetFileName(className);
// Change invalid chars to underscores
className = Util.MakeValidTypeNameFromString(className);
}
else
{
// Otherwise, use a default name
className = tempClassName;
}
return(className);
}
private void CreateHost()
{
Debug.Trace("CBM", "CreateHost");
Debug.Assert(_host == null);
Debug.Assert(!_hostCreationPending, "CreateHost: creation already pending");
_hostCreationPending = true;
// Use a local to avoid having a partially created _host
BuildManagerHost host = null;
try {
string appId;
IApplicationHost appHost;
ApplicationManager appManager = ApplicationManager.GetApplicationManager();
host = (BuildManagerHost)appManager.CreateObjectWithDefaultAppHostAndAppId(
_physicalPath, _virtualPath,
typeof(BuildManagerHost), false /*failIfExists*/,
_hostingParameters, out appId, out appHost);
// host appdomain cannot be unloaded during creation.
host.AddPendingCall();
host.Configure(this);
_host = host;
_appId = appId;
_appHost = appHost;
_hostCreationException = _host.InitializationException;
}
catch (Exception e) {
// If an exception happens, keep track of it
_hostCreationException = e;
// Even though the host initialization failed, keep track of it so subsequent
// request will see the error
_host = host;
}
finally {
_hostCreationPending = false;
if (host != null)
{
// Notify the client that the host is ready
if (AppDomainStarted != null)
{
AppDomainStarted(this, EventArgs.Empty);
}
// The host can be unloaded safely now.
host.RemovePendingCall();
}
}
Debug.Trace("CBM", "CreateHost LEAVE");
}
static bool GetSiteNameFromISAPI()
{
Debug.Trace("config_loc", "GetSiteNameFromISAPI()");
HttpContext context = HttpContext.Current;
if (context != null)
{
string metabaseAppKey = context.Request.ServerVariables["INSTANCE_META_PATH"];
const string KEY_LMW3SVC = "/LM/W3SVC/";
Debug.Assert(metabaseAppKey.StartsWith(KEY_LMW3SVC));
string appNumber = metabaseAppKey.Substring(KEY_LMW3SVC.Length - 1);
//string appServerComment = "/" + appNumber + "/ServerComment";
Debug.Trace("config_loc", "appNumber:" + appNumber + " INSTANCE_META_PATH:" + metabaseAppKey);
UnicodeEncoding encoding = new UnicodeEncoding();
// null-terminate appNumber and convert to byte array
byte [] byteAppNumber = encoding.GetBytes(appNumber + "\0");
int retVal = 2;
byte [] outBytes = new byte[64];
while (retVal == 2)
{
retVal = context.CallISAPI(UnsafeNativeMethods.CallISAPIFunc.GetSiteServerComment,
byteAppNumber, outBytes);
if (retVal == 2)
{
if (outBytes.Length > 1024) // should never happen
{
throw new ConfigurationException(HttpRuntime.FormatResourceString(
SR.Config_site_name_too_long,
metabaseAppKey));
}
outBytes = new byte[outBytes.Length * 2];
}
}
// find WCHAR null terminator in byte array
int i = 0;
while (i + 1 < outBytes.Length && (outBytes[i] != 0 || outBytes[i + 1] != 0))
{
i += 2;
}
// decode up to null terminator
s_siteName = encoding.GetString(outBytes, 0, i);
Debug.Trace("config_loc", "i: " + i + " site name:" + s_siteName);
return(true);
}
else
{
Debug.Trace("config_loc", "could not query site name. No Context.");
}
return(false); // keep trying to evaluate
}
// GetSection
//
// Get the Config for a specific path
//
static internal object GetSection(string sectionName, VirtualPath path)
{
Debug.Assert(UseHttpConfigurationSystem, "UseHttpConfigurationSystem");
CachedPathData pathData;
pathData = CachedPathData.GetVirtualPathData(path, true);
return(pathData.ConfigRecord.GetSection(sectionName));
}
protected SimpleWebHandlerParser(HttpContext context, string virtualPath, string physicalPath)
{
// These obsolete parameters should never be set
Debug.Assert(context == null);
Debug.Assert(physicalPath == null);
Debug.Assert(virtualPath != null);
_virtualPath = VirtualPath.Create(virtualPath);
}
// GetAppSection
//
// Get the Config for a specific path
//
static internal object GetApplicationSection(string sectionName)
{
Debug.Assert(UseHttpConfigurationSystem, "UseHttpConfigurationSystem");
CachedPathData pathData;
pathData = CachedPathData.GetApplicationPathData();
return(pathData.ConfigRecord.GetSection(sectionName));
}
/*
* Build first-time intialization statements
*/
protected override void BuildInitStatements(CodeStatementCollection trueStatements, CodeStatementCollection topLevelStatements)
{
base.BuildInitStatements(trueStatements, topLevelStatements);
CodeMemberField fileDependencies = new CodeMemberField(typeof(ArrayList), fileDependenciesName);
fileDependencies.Attributes |= MemberAttributes.Static;
_sourceDataClass.Members.Add(fileDependencies);
// Note: it may look like this local variable declaraiton is redundant. However it is necessary
// to make this init code re-entrant safe. This way, even if two threads enter the contructor
// at the same time, they will not add multiple dependencies.
// e.g. ArrayList dependencies;
CodeVariableDeclarationStatement dependencies = new CodeVariableDeclarationStatement();
dependencies.Type = new CodeTypeReference(typeof(ArrayList));
dependencies.Name = dependenciesLocalName;
topLevelStatements.Insert(0, dependencies);
// e.g. dependencies = new System.Collections.ArrayList();
CodeAssignStatement assignDependencies = new CodeAssignStatement();
assignDependencies.Left = new CodeVariableReferenceExpression(dependenciesLocalName);
assignDependencies.Right = new CodeObjectCreateExpression(typeof(ArrayList));
// Note: it is important to add all local variables at the top level for CodeDom Subset compliance.
trueStatements.Add(assignDependencies);
Debug.Assert(Parser.FileDependencies != null);
if (Parser.FileDependencies != null)
{
int count = Parser.FileDependencies.Length;
for (int i = 0; i < count; i++)
{
// depdendencies.Add("...");
CodeMethodInvokeExpression addFileDep = new CodeMethodInvokeExpression();
addFileDep.Method.TargetObject = new CodeVariableReferenceExpression(dependenciesLocalName);
addFileDep.Method.MethodName = "Add";
addFileDep.Parameters.Add(new CodePrimitiveExpression((string)Parser.FileDependencies[i]));
trueStatements.Add(new CodeExpressionStatement(addFileDep));
}
}
// e.g. __fileDependencies = dependencies;
CodeAssignStatement initFile = new CodeAssignStatement();
initFile.Left = new CodeFieldReferenceExpression(_classTypeExpr,
fileDependenciesName);
initFile.Right = new CodeVariableReferenceExpression(dependenciesLocalName);
#if DBG
AppendDebugComment(trueStatements);
#endif
trueStatements.Add(initFile);
}
internal static void RemoveBackgroundBatchCompilation(BackgroundBatchCompiler bbc)
{
lock (_backgroundBatchCompilations) {
try {
_backgroundBatchCompilations.Remove(bbc);
}
catch {
Debug.Assert(false, "RemoveBackgroundBatchCompilation failed");
}
}
}
/// <devdoc>
/// Returns an IEnumerable that is the DataSource, which either came
/// from the DataSource property or from the control bound via the
/// DataSourceID property.
/// </devdoc>
protected virtual IEnumerable GetData()
{
DataSourceView view = ConnectToDataSourceView();
Debug.Assert(_currentViewValid);
if (view != null)
{
return(view.ExecuteSelect(DataSourceSelectArguments.Empty));
}
return(null);
}
/*
* Build a ProcessRequest override which just calls the base. This is used to make sure
* there is user code on the stack when requests are executed (VSWhidbey 499386)
*/
private void BuildProcessRequestOverride()
{
// public override void ProcessRequest(HttpContext context) {
// base.ProcessRequest(context);
// }
CodeMemberMethod method = new CodeMemberMethod();
AddDebuggerNonUserCodeAttribute(method);
method.Name = "ProcessRequest";
method.Attributes &= ~MemberAttributes.AccessMask;
method.Attributes &= ~MemberAttributes.ScopeMask;
// If the base type is non-default (i.e. not Page) we have to be careful overriding
// ProcessRequest, because if the base has its own IHttpHandler.ProcessRequest implementation
// and it's not overridable, we would fail to compile. So when we detect this situation,
// we instead generate it as a new IHttpHandler.ProcessRequest implementation instead of an
// override. In theory, we could *always* do this, but it's safer to limit it to this
// constrained scenario (VSWhidbey 517240)
MethodInfo methodInfo = null;
if (Parser.BaseType != typeof(Page))
{
methodInfo = Parser.BaseType.GetMethod("ProcessRequest",
BindingFlags.Public | BindingFlags.Instance,
null, new Type[] { typeof(HttpContext) }, null);
Debug.Assert(methodInfo != null);
}
_sourceDataClass.BaseTypes.Add(new CodeTypeReference(typeof(IHttpHandler)));
if (methodInfo != null && methodInfo.DeclaringType != typeof(Page))
{
method.Attributes |= MemberAttributes.New | MemberAttributes.Public;
}
else
{
method.Attributes |= MemberAttributes.Override | MemberAttributes.Public;
}
method.Parameters.Add(new CodeParameterDeclarationExpression(typeof(HttpContext), "context"));
CodeMethodInvokeExpression invokeExpr = new CodeMethodInvokeExpression();
invokeExpr.Method.TargetObject = new CodeBaseReferenceExpression();
invokeExpr.Method.MethodName = "ProcessRequest";
invokeExpr.Parameters.Add(new CodeArgumentReferenceExpression("context"));
method.Statements.Add(invokeExpr);
_sourceDataClass.Members.Add(method);
}
private void CacheEntryToMemory(SourceCompilerCachedEntry scce)
{
Debug.Assert(_utcStart != DateTime.MinValue);
// Always add the main compiled file itself as a source dependency
AddSourceDependency(_physicalPath);
// Get an array of source file dependencies
string[] sourceDependencies = Util.StringArrayFromHashtable(_sourceDependencies);
_cache.UtcInsert(_cacheKey, scce, new CacheDependency(false, sourceDependencies, _utcStart),
Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration,
CacheItemPriority.NotRemovable, null);
Debug.Trace("Template", "Caching source code (" + _virtualPath + "," + scce._assembly.GetName().Name + ")");
}
/*
* Compile an .aspx file into an HttpApplication Type
*/
internal static Type GetCompiledApplicationType(string inputFile, HttpContext context,
out ApplicationFileParser parser)
{
parser = new ApplicationFileParser();
parser.CurrentVirtualPath = UrlPath.Combine(context.Request.ApplicationPath,
HttpApplicationFactory.applicationFileName);
parser.InputFile = inputFile;
parser.Context = context;
// Never use trivial pages for global.asax (ASURT 32420)
parser._fAlwaysCompile = true;
ParserCacheItem cacheItem = parser.GetParserCacheItem();
Debug.Assert(cacheItem.type != null);
return(cacheItem.type);
}
/*
* Preserve the combined hash of the special files to a file.
*/
private static void WritePreservedSpecialFilesCombinedHash(long hash)
{
Debug.Assert(hash != 0, "WritePreservedSpecialFilesCombinedHash: hash != 0");
StreamWriter writer = null;
try {
writer = new StreamWriter(GetSpecialFilesCombinedHashFileName(),
false, Encoding.UTF8);
writer.Write(hash.ToString("x"));
}
finally {
if (writer != null)
{
writer.Close();
}
}
}
/*
* Create an object in the runtime appdomain
*/
public IRegisteredObject CreateObject(Type type, bool failIfExists)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
EnsureHostCreated();
Debug.Assert(_appId != null);
Debug.Assert(_appHost != null);
_host.RegisterAssembly(type.Assembly.FullName, type.Assembly.Location);
ApplicationManager appManager = ApplicationManager.GetApplicationManager();
return(appManager.CreateObjectInternal(_appId, type, _appHost, failIfExists, _hostingParameters));
}
internal PreservedAssemblyEntry(HttpContext context, string virtualPath, bool fApplicationFile,
Assembly assembly, Type type, Hashtable sourceDependencies)
{
_context = context;
_virtualPath = virtualPath;
_fApplicationFile = fApplicationFile;
if (assembly != null)
{
_assembly = assembly;
}
else
{
_assembly = type.Module.Assembly;
}
_type = type;
_sourceDependencies = sourceDependencies;
_assemblyDependencies = Util.GetReferencedAssembliesHashtable(_assembly);
// If any of the assemblies we depend on are in the bin directory,
// add a file dependency for them.
string binDir = HttpRuntime.BinDirectoryInternal;
foreach (Assembly a in AssemblyDependencies.Keys)
{
string assemblyFilePath = Util.FilePathFromFileUrl(a.EscapedCodeBase);
if (assemblyFilePath.StartsWith(binDir))
{
_sourceDependencies[assemblyFilePath] = assemblyFilePath;
}
}
// If there are some web.config files other than the global ones, depend on them
string baseVirtualDir = UrlPath.GetDirectory(virtualPath);
string[] configFiles = context.GetConfigurationDependencies(baseVirtualDir);
Debug.Assert(configFiles.Length >= _numTopLevelConfigFiles, "configFiles.Length >= _numTopLevelConfigFiles");
for (int i = 0; i < configFiles.Length - _numTopLevelConfigFiles; i++)
{
_sourceDependencies[configFiles[i]] = configFiles[i];
}
}
private void AddConstructorToSource(ConstructorInfo ctor)
{
Debug.Assert(ctor != null);
Debug.Assert(ctor.GetParameters().Length > 0);
var ctorCode = new CodeConstructor();
AddDebuggerNonUserCodeAttribute(ctorCode);
ctorCode.Attributes &= ~MemberAttributes.AccessMask;
ctorCode.Attributes |= MemberAttributes.Public;
// copy all the attributes of the contrustor parameters
foreach (var p in ctor.GetParameters())
{
var parameterExpr = new CodeParameterDeclarationExpression(p.ParameterType, p.Name);
foreach (var attr in p.CustomAttributes)
{
var attrArgs = new List <CodeAttributeArgument>();
foreach (var arg in attr.ConstructorArguments)
{
attrArgs.Add(new CodeAttributeArgument(new CodePrimitiveExpression(arg.Value)));
}
foreach (var arg in attr.NamedArguments)
{
attrArgs.Add(new CodeAttributeArgument(arg.MemberName, new CodePrimitiveExpression(arg.TypedValue.Value)));
}
var customAttrExpr = new CodeAttributeDeclaration(new CodeTypeReference(attr.AttributeType), attrArgs.ToArray());
parameterExpr.CustomAttributes.Add(customAttrExpr);
}
if (p.HasDefaultValue)
{
var defaultValAttrExpr = new CodeAttributeDeclaration(new CodeTypeReference(typeof(DefaultParameterValueAttribute)),
new CodeAttributeArgument(new CodePrimitiveExpression(p.DefaultValue)));
parameterExpr.CustomAttributes.Add(defaultValAttrExpr);
}
ctorCode.Parameters.Add(parameterExpr);
ctorCode.BaseConstructorArgs.Add(new CodeVariableReferenceExpression(p.Name));
}
ctorCode.Statements.Add(CreateInitInvoke());
_sourceDataClass.Members.Add(ctorCode);
}
private void AddConstructorToSource(ConstructorInfo ctor)
{
Debug.Assert(ctor != null);
Debug.Assert(ctor.GetParameters().Length > 0);
var ctorCode = new CodeConstructor();
AddDebuggerNonUserCodeAttribute(ctorCode);
ctorCode.Attributes &= ~MemberAttributes.AccessMask;
ctorCode.Attributes |= MemberAttributes.Public;
foreach (var p in ctor.GetParameters())
{
ctorCode.Parameters.Add(new CodeParameterDeclarationExpression(p.ParameterType, p.Name));
ctorCode.BaseConstructorArgs.Add(new CodeVariableReferenceExpression(p.Name));
}
ctorCode.Statements.Add(CreateInitInvoke());
_sourceDataClass.Members.Add(ctorCode);
}
private long NextSample()
{
// not thread-safe, only invoke from timer callback
Debug.Assert(_inPBytesMonitorThread == 1);
// NtQuerySystemInformation is a very expensive call. A new function
// exists on XP Pro and later versions of the OS and it performs much
// better. The name of that function is GetProcessMemoryInfo. For hosting
// scenarios where a larger number of w3wp.exe instances are running, we
// want to use the new API (VSWhidbey 417366).
long privateBytes;
if (_useGetProcessMemoryInfo)
{
long privatePageCount;
UnsafeNativeMethods.GetPrivateBytesIIS6(out privatePageCount, true /*nocache*/);
privateBytes = privatePageCount;
}
else
{
uint dummy;
uint privatePageCount = 0;
// this is a very expensive call
UnsafeNativeMethods.GetProcessMemoryInformation(_pid, out privatePageCount, out dummy, true /*nocache*/);
privateBytes = (long)privatePageCount << MEGABYTE_SHIFT;
}
// increment the index (it's either 1 or 0)
Debug.Assert(SAMPLE_COUNT == 2);
_idx = _idx ^ 1;
// remember the sample time
_sampleTimes[_idx] = DateTime.UtcNow;
// remember the sample value
_samples[_idx] = privateBytes;
#if PERF
SafeNativeMethods.OutputDebugString(String.Format("CacheManager.NextSample: privateBytes={0:N}, _highPresureMark={1:N}\n", privateBytes, _highPressureMark));
#endif
return(privateBytes);
}
/*
* Helper method for building application and session scope injected
* properties. If useApplicationState, build application properties, otherwise
* build session properties.
*/
private void BuildObjectPropertiesHelper(IDictionary objects, bool useApplicationState)
{
IDictionaryEnumerator en = objects.GetEnumerator();
while (en.MoveNext())
{
HttpStaticObjectsEntry entry = (HttpStaticObjectsEntry)en.Value;
// e.g. (PropType)Session.StaticObjects["PropName"]
// Use the appropriate collection
CodePropertyReferenceExpression stateObj = new CodePropertyReferenceExpression(new CodePropertyReferenceExpression(new CodeThisReferenceExpression(),
useApplicationState ? "Application" : "Session"),
"StaticObjects");
CodeMethodInvokeExpression getObject = new CodeMethodInvokeExpression(stateObj, "GetObject");
getObject.Parameters.Add(new CodePrimitiveExpression(entry.Name));
Type declaredType = entry.DeclaredType;
Debug.Assert(!Util.IsLateBoundComClassicType(declaredType));
if (useApplicationState)
{
// for application state use property that does caching in a member
BuildInjectedGetPropertyMethod(entry.Name, declaredType.FullName,
new CodeCastExpression(declaredType.FullName, getObject),
false /*fPublicProp*/);
}
else
{
// for session state use lookup every time, as one application instance deals with many sessions
CodeMemberProperty prop = new CodeMemberProperty();
prop.Name = entry.Name;
prop.Type = new CodeTypeReference(declaredType.FullName);
prop.GetStatements.Add(new CodeMethodReturnStatement(new CodeCastExpression(declaredType.FullName, getObject)));
_sourceDataClass.Members.Add(prop);
}
}
}
internal BatchCompilationEntry(string virtualPath, string filename, HttpContext context)
{
_virtualPath = virtualPath;
string extension = Path.GetExtension(filename);
if (string.Compare(extension, ".aspx", true, CultureInfo.InvariantCulture) == 0)
{
_templateParser = new PageParser();
}
else if (string.Compare(extension, ".ascx", true, CultureInfo.InvariantCulture) == 0)
{
_templateParser = new UserControlParser();
_fUserControl = true;
}
else
{
Debug.Assert(false, "Unexpected extension");
}
_templateParser.InputFile = filename;
_templateParser.Context = context;
_templateParser.CurrentVirtualPath = virtualPath;
}
internal override CodeExpression BuildStringPropertyExpression(PropertyEntry pse)
{
// Make the UrlProperty based on virtualDirPath for control themes.
if (pse.PropertyInfo != null)
{
UrlPropertyAttribute urlAttrib = Attribute.GetCustomAttribute(pse.PropertyInfo, typeof(UrlPropertyAttribute)) as UrlPropertyAttribute;
if (urlAttrib != null)
{
if (pse is SimplePropertyEntry)
{
SimplePropertyEntry spse = (SimplePropertyEntry)pse;
string strValue = (string)spse.Value;
if (UrlPath.IsRelativeUrl(strValue) && !UrlPath.IsAppRelativePath(strValue))
{
spse.Value = UrlPath.MakeVirtualPathAppRelative(UrlPath.Combine(_themeParser.VirtualDirPath.VirtualPathString, strValue));
}
}
else
{
Debug.Assert(pse is ComplexPropertyEntry);
ComplexPropertyEntry cpe = (ComplexPropertyEntry)pse;
StringPropertyBuilder builder = (StringPropertyBuilder)cpe.Builder;
string strValue = (string)builder.BuildObject();
if (UrlPath.IsRelativeUrl(strValue) && !UrlPath.IsAppRelativePath(strValue))
{
cpe.Builder = new StringPropertyBuilder(UrlPath.MakeVirtualPathAppRelative(UrlPath.Combine(_themeParser.VirtualDirPath.VirtualPathString, strValue)));
}
}
}
}
return(base.BuildStringPropertyExpression(pse));
}
protected override void BuildSourceDataTreeFromBuilder(ControlBuilder builder,
bool fInTemplate, bool topLevelControlInTemplate,
PropertyEntry pse)
{
// Don't do anything for code blocks
if (builder is CodeBlockBuilder)
{
return;
}
// Is the current builder for a template?
bool fTemplate = (builder is TemplateBuilder);
// Is the current builder the root builder?
bool fRootBuilder = (builder == _themeParser.RootBuilder);
// Is this a control theme?
bool fControlSkin = !fInTemplate && !fTemplate && topLevelControlInTemplate;
// Ignore the ID attribute, always auto generate ID.
_controlCount++;
builder.ID = "__control" + _controlCount.ToString(NumberFormatInfo.InvariantInfo);
builder.IsGeneratedID = true;
// Check for the SkinID property.
if (fControlSkin && !(builder is DataBoundLiteralControlBuilder))
{
Type ctrlType = builder.ControlType;
Debug.Assert(typeof(Control).IsAssignableFrom(ctrlType));
Debug.Assert(ThemeableAttribute.IsTypeThemeable(ctrlType));
string skinID = builder.SkinID;
object skinKey = PageTheme.CreateSkinKey(builder.ControlType, skinID);
if (_controlSkinTypeNameCollection.Contains(skinKey))
{
if (String.IsNullOrEmpty(skinID))
{
throw new HttpParseException(SR.GetString(SR.Page_theme_default_theme_already_defined,
builder.ControlType.FullName), null, builder.VirtualPath, null, builder.Line);
}
else
{
throw new HttpParseException(SR.GetString(SR.Page_theme_skinID_already_defined, skinID),
null, builder.VirtualPath, null, builder.Line);
}
}
_controlSkinTypeNameCollection.Add(skinKey, true);
_controlSkinBuilderEntryList.Add(new ControlSkinBuilderEntry(builder, skinID));
}
// Process the children
// only root builders and template builders are processed.
if (builder.SubBuilders != null)
{
foreach (object child in builder.SubBuilders)
{
if (child is ControlBuilder)
{
bool isTopLevelCtrlInTemplate = fTemplate && typeof(Control).IsAssignableFrom(((ControlBuilder)child).ControlType);
BuildSourceDataTreeFromBuilder((ControlBuilder)child, fInTemplate, isTopLevelCtrlInTemplate, null);
}
}
}
foreach (TemplatePropertyEntry entry in builder.TemplatePropertyEntries)
{
BuildSourceDataTreeFromBuilder(((TemplatePropertyEntry)entry).Builder, true, false /*topLevelControlInTemplate*/, entry);
}
foreach (ComplexPropertyEntry entry in builder.ComplexPropertyEntries)
{
if (!(entry.Builder is StringPropertyBuilder))
{
BuildSourceDataTreeFromBuilder(((ComplexPropertyEntry)entry).Builder, fInTemplate, false /*topLevelControlInTemplate*/, entry);
}
}
// Build a Build method for the control
// fControlSkin indicates whether the method is a theme build method.
if (!fRootBuilder)
{
BuildBuildMethod(builder, fTemplate, fInTemplate, topLevelControlInTemplate, pse,
fControlSkin);
}
// Build a Render method for the control, unless it has no code
if (!fControlSkin && builder.HasAspCode)
{
BuildRenderMethod(builder, fTemplate);
}
// Build a method to extract values from the template
BuildExtractMethod(builder);
// Build a property binding method for the control
BuildPropertyBindingMethod(builder, fControlSkin);
}
void Adjust()
{
// not thread-safe, only invoke from timer callback
Debug.Assert(_inPBytesMonitorThread == 1);
Debug.Assert(SAMPLE_COUNT == 2);
// current sample
long s2 = _samples[_idx];
// previous sample
long s1 = _samples[_idx ^ 1];
// adjust _maxDelta and pressure marks
if (s2 > s1 && s1 > 0)
{
// current time
DateTime d2 = _sampleTimes[_idx];
// previous time
DateTime d1 = _sampleTimes[_idx ^ 1];
long numBytes = s2 - s1;
long numSeconds = (long)Math.Round(d2.Subtract(d1).TotalSeconds);
if (numSeconds > 0)
{
long delta = numBytes / numSeconds;
_deltaSamples[_idxDeltaSamples] = delta;
_idxDeltaSamples = (_idxDeltaSamples + 1) % DELTA_SAMPLE_COUNT;
// update rate of change in private bytes and pressure marks
AdjustMaxDeltaAndPressureMarks(delta);
}
}
lock (_timerLock) {
if (_timer == null)
{
return;
}
// adjust timer frequency
if (s2 > _mediumPressureMark)
{
if (_currentPollInterval > HIGH_FREQ_INTERVAL_MS)
{
_currentPollInterval = HIGH_FREQ_INTERVAL_MS;
_timer.Change(_currentPollInterval, _currentPollInterval);
}
}
else if (s2 > _lowPressureMark)
{
if (_currentPollInterval > MEDIUM_FREQ_INTERVAL_MS)
{
_currentPollInterval = MEDIUM_FREQ_INTERVAL_MS;
_timer.Change(_currentPollInterval, _currentPollInterval);
}
}
else
{
if (_currentPollInterval != LOW_FREQ_INTERVAL_MS)
{
_currentPollInterval = LOW_FREQ_INTERVAL_MS;
_timer.Change(_currentPollInterval, _currentPollInterval);
}
}
}
}
void AdjustMaxDeltaAndPressureMarks(long delta)
{
// not thread-safe...only invoke from ctor or timer callback
Debug.Assert(_inPBytesMonitorThread == 1 || _timer == null);
// The value of _maxDelta is the largest rate of change we've seen,
// but it is reduced if the rate is now consistently less than what
// it once was.
long newMaxDelta = _maxDelta;
if (delta > newMaxDelta)
{
// set maxDelta to the current rate of change
newMaxDelta = delta;
}
else
{
// if _maxDelta is at least four times larger than every sample rate in the history,
// then reduce _maxDelta
bool reduce = true;
long maxDelta = _maxDelta / 4;
foreach (long rate in _deltaSamples)
{
if (rate > maxDelta)
{
reduce = false;
break;
}
}
if (reduce)
{
newMaxDelta = maxDelta * 2;
}
}
// ensure that maxDelta is sufficiently large so that the _highPressureMark is sufficiently
// far away from the memory limit
newMaxDelta = Math.Max(newMaxDelta, _minMaxDelta);
// Do we have a new maxDelta? If so, adjust it and pressure marks.
if (_maxDelta != newMaxDelta)
{
// adjust _maxDelta
_maxDelta = newMaxDelta;
// instead of using _maxDelta, use twice _maxDelta since recycling is
// expensive and the real delta fluctuates
_highPressureMark = Math.Max(_limit * 9 / 10, _limit - (_maxDelta * 2 * HIGH_FREQ_INTERVAL_S));
_lowPressureMark = Math.Max(_limit * 6 / 10, _limit - (_maxDelta * 2 * LOW_FREQ_INTERVAL_S));
_mediumPressureMark = Math.Max((_highPressureMark + _lowPressureMark) / 2, _limit - (_maxDelta * 2 * MEDIUM_FREQ_INTERVAL_S));
_mediumPressureMark = Math.Min(_highPressureMark, _mediumPressureMark);
#if PERF
SafeNativeMethods.OutputDebugString(String.Format("CacheManager.AdjustMaxDeltaAndPressureMarks: _highPressureMark={0:N}, _mediumPressureMark={1:N}, _lowPressureMark={2:N}, _maxDelta={3:N}\n", _highPressureMark, _mediumPressureMark, _lowPressureMark, _maxDelta));
#endif
#if DBG
Debug.Trace("CacheMemory", "AdjustMaxDeltaAndPressureMarks "
+ "delta=" + delta
+ ", _maxDelta=" + _maxDelta
+ ", _highPressureMark=" + _highPressureMark
+ ", _mediumPressureMark=" + _mediumPressureMark
+ ", _lowPressureMark=" + _lowPressureMark);
#endif
}
}
// This function is named after a comment in the original code that sums up what it does nicely.
// // now we zip up the path, composing config
HttpConfigurationRecord ComposeConfig(String reqPath, IHttpMapPath configmap)
{
// remove ending "/"
if (reqPath != null && reqPath.Length > 0 && reqPath[reqPath.Length - 1] == '/')
{
reqPath = reqPath.Substring(0, reqPath.Length - 1);
}
if (configmap == null && reqPath != null)
{
//
// s_contextlessMapPath only works for paths from machine-level to application-level
// This is only exposed to internal APIs, so this is just to make sure we don't break ourselves.
//
Debug.Assert(reqPath != null && (reqPath.Length > s_contextlessMapPath.ApplicationPath.Length ||
s_contextlessMapPath.ApplicationPath.Substring(0, reqPath.Length) == reqPath));
configmap = s_contextlessMapPath;
}
// QUICK: look up record in cache (case-insensitive)
//
// This is the common case because most pages are requested more than once every five minutes
// Note: will be null on first invocation
//
HttpConfigurationRecord configRecord = CacheLookup(reqPath);
if (configRecord != null)
{
return(configRecord);
}
DateTime utcStart = DateTime.UtcNow;
// SLOW: hunt around
//
// Next, we start from the end of the request path and work our way toward the machine-level config
// record. The first record we find is the one we use. Later we'll walk back down the path stack
// building all the records that weren't found in the cache.
//
// Note: On first invocation for this appdomain we won't find anything in the cache, so we'll compose
// all config records from machine-level down.
//
ArrayList pathStack = new ArrayList();
String path = reqPath;
HttpConfigurationRecord parentRecord = null;
for (;;)
{
// stack child
pathStack.Add(path);
// escape from root
if (path == null)
{
break;
}
// go to parent
path = ParentPath(path);
// look it up
parentRecord = CacheLookup(path);
if (parentRecord == null)
{
configRecord = null;
}
else
{
if (parentRecord.IsInheritable) // only inherit from directory ConfigRecords, else keep looking
{
Debug.Trace("config", "Config located in cache " + QuoteString(path));
break;
}
configRecord = parentRecord;
}
}
// now we zip down the path, composing config
//
// We walk down the path ...
// For each directory, we build a config record and add a dependency on the config file
// The first path that doesn't map to a directory we assume
// is a file (leaf in the config system and not inheritable)
// Anything left in the path stack after the file* is assumed to
// be pathinfo** and is ignored.
//
// Notes:
// * - we never verify the physical file, it's assumed if the mapped path
// is not a directory (is this correct behavior?)
// ** - pathinfo is the possible junk on the path after the file path:
// example: http://localhost/myapp/foo.aspx/bar
// /myapp/foo.aspx - file path (see Request.FilePath)
// /bar - pathinfo
//
bool isDir = true;
CacheInternal cacheInternal = HttpRuntime.CacheInternal;
for (int i = pathStack.Count - 1; i >= 0 && isDir == true; i--)
{
String configFile = null;
String mappedPath = null;
Hashtable cachedeps = null;
path = (String)pathStack[i];
if (path == null)
{
mappedPath = "";
if (configmap == null)
{
configFile = HttpConfigurationSystemBase.MachineConfigurationFilePath;
}
else
{
configFile = configmap.MachineConfigPath;
}
// null MachineConfigPath -> never cache config - always return an empty record.
if (configFile == null)
{
return(HttpConfigurationRecord.Empty);
}
AddFileDependency(configFile);
}
else
{
if (IsPath(path))
{
mappedPath = configmap.MapPath(path);
if (IsDirectory(mappedPath))
{
// for the directory case, grab the config file and a dependency on it
configFile = Path.Combine(mappedPath, WebConfigFileName);
AddFileDependency(configFile);
}
else
{
// otherwise, we're a file and we go ahead and compute as a file
isDir = false; // break loop (after record is built)
// we need make the cache item dependent on the mapped file location
// in case it becomes a directory.
if (mappedPath != null)
{
Debug.Assert(cachedeps == null, "ctracy investigation - cachedeps == null");
cachedeps = new Hashtable(SymbolHashCodeProvider.Default, SymbolEqualComparer.Default);
cachedeps[mappedPath] = mappedPath;
}
}
}
}
configRecord = new HttpConfigurationRecord(configFile, parentRecord, /*mappedPath,*/ isDir, path);
string key = CacheKey(path);
CacheDependency dependency = GetCacheDependencies(cachedeps, utcStart);
Debug.Trace("config_verbose", "Inserting :" + path);
if (IsBreakOnUnrecognizedElement)
{
// If the registry key is set to debug the rare 'Unrecognized Element'
// stress error, lets try to reproduce the error by having an absolute
// expiry of 5 minutes (this will cause us to re-read config much more
// often. Before it took memory pressure.
DateTime absouteExpiry = DateTime.UtcNow + new TimeSpan(0, 5, 0);
cacheInternal.UtcInsert(key, configRecord, dependency, absouteExpiry, Cache.NoSlidingExpiration);
}
else
{
if (configRecord.HasError)
{
cacheInternal.UtcInsert(key, configRecord, dependency,
DateTime.UtcNow.AddSeconds(5), Cache.NoSlidingExpiration);
}
else
{
// default: default cache priority, sliding expiration
// this will make us rarely expire, config is expensive
cacheInternal.UtcInsert(key, configRecord, dependency);
}
}
// This is to wire-up notification of directories who exist (without a config file) and
// are then deleted. In this case we don't want to restart the appdomain because no config information has
// changed. We do want to remove the cache record and recreate it on the next request. (Something in
// the cache record might be assuming the directory still exists.)
if (isDir && !FileUtil.FileExists(configFile) && HandlerBase.IsPathAtAppLevel(path) == PathLevel.BelowApp)
{
//AddDirectoryDependency(mappedPath, path, configRecord);
}
configRecord.CheckCachedException();
parentRecord = configRecord;
}
return(configRecord);
}
private void CollectInfrequently(long privateBytes)
{
// not thread-safe, only invoke from timer callback
Debug.Assert(_inPBytesMonitorThread == 1);
// The Server GC on x86 can traverse ~200mb per CPU per second, and the maximum heap size
// is about 3400mb, so the worst case scenario on x86 would take about 8 seconds to collect
// on a dual CPU box.
//
// The Server GC on x64 can traverse ~300mb per CPU per second, so a 6000 MB heap will take
// about 10 seconds to collect on a dual CPU box. The worst case scenario on x64 would make
// you want to return your hardware for a refund.
long timeSinceInducedGC = DateTime.UtcNow.Subtract(_inducedGCFinishTime).Ticks;
bool infrequent = (timeSinceInducedGC > _inducedGCMinInterval);
// if we haven't collected recently, or if the trim percent is low (less than 50%),
// we need to collect again
if (infrequent || _lastTrimPercent < 50)
{
// if we're inducing GC too frequently, increase the trim percentage, but don't go above 50%
if (!infrequent)
{
_lastTrimPercent = Math.Min(50, _lastTrimPercent + 10);
}
// if we're inducing GC infrequently, we may want to decrease the trim percentage
else if (_lastTrimPercent > 10 && timeSinceInducedGC > 2 * _inducedGCMinInterval)
{
_lastTrimPercent = Math.Max(10, _lastTrimPercent - 10);
}
int percent = (_totalCacheSize > 0) ? _lastTrimPercent : 0;
long trimmedOrExpired = 0;
if (percent > 0)
{
Stopwatch sw1 = Stopwatch.StartNew();
trimmedOrExpired = _appManager.TrimCaches(percent);
sw1.Stop();
_trimDurationTicks = sw1.Elapsed.Ticks;
}
//
if (trimmedOrExpired == 0 || _appManager.ShutdownInProgress)
{
return;
}
// collect and record statistics
Stopwatch sw2 = Stopwatch.StartNew();
GC.Collect();
sw2.Stop();
_inducedGCCount++; // only used for debugging
_inducedGCFinishTime = DateTime.UtcNow;
_inducedGCDurationTicks = sw2.Elapsed.Ticks;
_inducedGCPostPrivateBytes = NextSample();
_inducedGCPrivateBytesChange = privateBytes - _inducedGCPostPrivateBytes;
// target 3.3% Time in GC, but don't induce a GC more than once every 5 seconds
// Notes on calculation below: If G is duration of garbage collection and T is duration
// between starting the next collection, then G/T is % Time in GC. If we target 3.3%,
// then G/T = 3.3% = 33/1000, so T = G * 1000/33.
_inducedGCMinInterval = Math.Max(_inducedGCDurationTicks * 1000 / 33, 5 * TimeSpan.TicksPerSecond);
// no more frequently than every 60 seconds if change is less than 1%
if (_inducedGCPrivateBytesChange * 100 <= privateBytes)
{
_inducedGCMinInterval = Math.Max(_inducedGCMinInterval, 60 * TimeSpan.TicksPerSecond);
}
#if DBG
Debug.Trace("CacheMemory", "GC.COLLECT STATS "
+ "TrimCaches(" + percent + ")"
+ ", trimDurationSeconds=" + (_trimDurationTicks / TimeSpan.TicksPerSecond)
+ ", trimmedOrExpired=" + trimmedOrExpired
+ ", #secondsSinceInducedGC=" + (timeSinceInducedGC / TimeSpan.TicksPerSecond)
+ ", InducedGCCount=" + _inducedGCCount
+ ", gcDurationSeconds=" + (_inducedGCDurationTicks / TimeSpan.TicksPerSecond)
+ ", PrePrivateBytes=" + privateBytes
+ ", PostPrivateBytes=" + _inducedGCPostPrivateBytes
+ ", PrivateBytesChange=" + _inducedGCPrivateBytesChange
+ ", gcMinIntervalSeconds=" + (_inducedGCMinInterval / TimeSpan.TicksPerSecond));
#endif
#if PERF
SafeNativeMethods.OutputDebugString(" ** COLLECT **: "
+ percent + "%, "
+ (_trimDurationTicks / TimeSpan.TicksPerSecond) + " seconds"
+ ", infrequent=" + infrequent
+ ", removed=" + trimmedOrExpired
+ ", sinceIGC=" + (timeSinceInducedGC / TimeSpan.TicksPerSecond)
+ ", IGCCount=" + _inducedGCCount
+ ", IGCDuration=" + (_inducedGCDurationTicks / TimeSpan.TicksPerSecond)
+ ", preBytes=" + privateBytes
+ ", postBytes=" + _inducedGCPostPrivateBytes
+ ", byteChange=" + _inducedGCPrivateBytesChange
+ ", IGCMinInterval=" + (_inducedGCMinInterval / TimeSpan.TicksPerSecond) + "\n");
#endif
}
}
private Control LoadControl(IWebObjectFactory objectFactory, VirtualPath virtualPath, Type t, object[] parameters)
{
// Make sure we get an object factory or a type, but not both
Debug.Assert((objectFactory == null) != (t == null));
BuildResultCompiledType compiledUCResult = null;
BuildResultNoCompileUserControl noCompileUCResult = null;
if (objectFactory != null)
{
// It can be a compiled or no-compile user control
compiledUCResult = objectFactory as BuildResultCompiledType;
if (compiledUCResult != null)
{
t = compiledUCResult.ResultType;
Debug.Assert(t != null);
// Make sure it's a user control (VSWhidbey 428718)
Util.CheckAssignableType(typeof(UserControl), t);
}
else
{
noCompileUCResult = (BuildResultNoCompileUserControl)objectFactory;
Debug.Assert(noCompileUCResult != null);
}
}
else
{
// Make sure the type has the correct base class (ASURT 123677)
if (t != null)
{
Util.CheckAssignableType(typeof(Control), t);
}
}
PartialCachingAttribute cacheAttrib;
// Check if the user control has a PartialCachingAttribute attribute
if (t != null)
{
cacheAttrib = (PartialCachingAttribute)
TypeDescriptor.GetAttributes(t)[typeof(PartialCachingAttribute)];
}
else
{
cacheAttrib = noCompileUCResult.CachingAttribute;
}
if (cacheAttrib == null)
{
// The control is not cached. Just create it.
Control c;
if (objectFactory != null)
{
c = (Control)objectFactory.CreateInstance();
}
else
{
c = (Control)HttpRuntime.CreatePublicInstance(t, parameters);
}
// If it's a user control, do some extra initialization
UserControl uc = c as UserControl;
if (uc != null)
{
Debug.Assert(virtualPath != null);
if (virtualPath != null)
{
uc.TemplateControlVirtualPath = virtualPath;
}
uc.InitializeAsUserControl(Page);
}
return(c);
}
HashCodeCombiner combinedHashCode = new HashCodeCombiner();
// Start by adding the type or object factory of the user control to the hash.
// This guarantees that two unrelated user controls don't share the same cached data.
if (objectFactory != null)
{
combinedHashCode.AddObject(objectFactory);
}
else
{
combinedHashCode.AddObject(t);
}
// If it's not shared, add some stack frames to the hash
if (!cacheAttrib.Shared)
{
AddStackContextToHashCode(combinedHashCode);
}
string cacheKey = combinedHashCode.CombinedHashString;
// Wrap it to allow it to be cached
return(new PartialCachingControl(objectFactory, t, cacheAttrib, "_" + cacheKey, parameters));
}
/*
* Build first-time intialization statements
*/
protected override void BuildInitStatements(CodeStatementCollection trueStatements, CodeStatementCollection topLevelStatements)
{
base.BuildInitStatements(trueStatements, topLevelStatements);
//
CodeMemberField fileDependencies = new CodeMemberField(typeof(object), fileDependenciesName);
fileDependencies.Attributes |= MemberAttributes.Static;
_sourceDataClass.Members.Add(fileDependencies);
// Note: it may look like this local variable declaration is redundant. However it is necessary
// to make this init code re-entrant safe. This way, even if two threads enter the contructor
// at the same time, they will not add multiple dependencies.
// e.g. string[] dependencies;
CodeVariableDeclarationStatement dependencies = new CodeVariableDeclarationStatement();
dependencies.Type = new CodeTypeReference(typeof(string[]));
dependencies.Name = dependenciesLocalName;
// Note: it is important to add all local variables at the top level for CodeDom Subset compliance.
topLevelStatements.Insert(0, dependencies);
Debug.Assert(Parser.SourceDependencies != null);
StringSet virtualDependencies = new StringSet();
virtualDependencies.AddCollection(Parser.SourceDependencies);
// e.g. dependencies = new string[{{virtualDependencies.Count}}];;
CodeAssignStatement assignDependencies = new CodeAssignStatement();
assignDependencies.Left =
new CodeVariableReferenceExpression(dependenciesLocalName);
assignDependencies.Right =
new CodeArrayCreateExpression(typeof(String), virtualDependencies.Count);
trueStatements.Add(assignDependencies);
int i = 0;
foreach (string virtualDependency in virtualDependencies)
{
// e.g. dependencies[i] = "~/sub/foo.aspx";
CodeAssignStatement addFileDep = new CodeAssignStatement();
addFileDep.Left =
new CodeArrayIndexerExpression(
new CodeVariableReferenceExpression(dependenciesLocalName),
new CodeExpression[] { new CodePrimitiveExpression(i++) });
string src = UrlPath.MakeVirtualPathAppRelative(virtualDependency);
addFileDep.Right = new CodePrimitiveExpression(src);
trueStatements.Add(addFileDep);
}
// e.g. __fileDependencies = this.GetWrappedFileDependencies(dependencies);
CodeAssignStatement initFile = new CodeAssignStatement();
initFile.Left = new CodeFieldReferenceExpression(_classTypeExpr, fileDependenciesName);
CodeMethodInvokeExpression createWrap = new CodeMethodInvokeExpression();
createWrap.Method.TargetObject = new CodeThisReferenceExpression();
createWrap.Method.MethodName = "GetWrappedFileDependencies";
createWrap.Parameters.Add(new CodeVariableReferenceExpression(dependenciesLocalName));
initFile.Right = createWrap;
#if DBG
AppendDebugComment(trueStatements);
#endif
trueStatements.Add(initFile);
}