/mcs/class/System.Web/System.Web.Compilation/CachingCompiler.cs
C# | 342 lines | 263 code | 50 blank | 29 comment | 67 complexity | 7dfca81505c88a989842cf5c0b6d2007 MD5 | raw file
Possible License(s): Unlicense, Apache-2.0, LGPL-2.0, MPL-2.0-no-copyleft-exception, CC-BY-SA-3.0, GPL-2.0
- //
- // System.Web.Compilation.CachingCompiler
- //
- // Authors:
- // Gonzalo Paniagua Javier (gonzalo@ximian.com)
- //
- // (C) 2002 Ximian, Inc (http://www.ximian.com)
- // (c) Copyright Novell, Inc. (http://www.novell.com)
- //
- //
- // Permission is hereby granted, free of charge, to any person obtaining
- // a copy of this software and associated documentation files (the
- // "Software"), to deal in the Software without restriction, including
- // without limitation the rights to use, copy, modify, merge, publish,
- // distribute, sublicense, and/or sell copies of the Software, and to
- // permit persons to whom the Software is furnished to do so, subject to
- // the following conditions:
- //
- // The above copyright notice and this permission notice shall be
- // included in all copies or substantial portions of the Software.
- //
- // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- //
- using System;
- using System.CodeDom.Compiler;
- using System.Collections;
- using System.Collections.Generic;
- using System.Collections.Specialized;
- using System.IO;
- using System.Reflection;
- using System.Threading;
- using System.Web.UI;
- using System.Web.Caching;
- using System.Web.Configuration;
- namespace System.Web.Compilation
- {
- class CachingCompiler
- {
- static string dynamicBase = AppDomain.CurrentDomain.SetupInformation.DynamicBase;
- static Hashtable compilationTickets = new Hashtable ();
- const string cachePrefix = "@@Assembly";
- const string cacheTypePrefix = "@@@Type";
- static Hashtable assemblyCache = new Hashtable ();
-
- public static void InsertTypeFileDep (Type type, string filename)
- {
- CacheDependency dep = new CacheDependency (filename);
- HttpRuntime.InternalCache.Insert (cacheTypePrefix + filename, type, dep);
- }
- public static void InsertType (Type type, string filename)
- {
- string [] cacheKeys = new string [] { cachePrefix + filename };
- CacheDependency dep = new CacheDependency (null, cacheKeys);
- HttpRuntime.InternalCache.Insert (cacheTypePrefix + filename, type, dep);
- }
- public static Type GetTypeFromCache (string filename)
- {
- return (Type) HttpRuntime.InternalCache [cacheTypePrefix + filename];
- }
- public static CompilerResults Compile (BaseCompiler compiler)
- {
- Cache cache = HttpRuntime.InternalCache;
- string key = cachePrefix + compiler.Parser.InputFile;
- CompilerResults results = (CompilerResults) cache [key];
- if (!compiler.IsRebuildingPartial)
- if (results != null)
- return results;
- object ticket;
- bool acquired = AcquireCompilationTicket (key, out ticket);
- try {
- Monitor.Enter (ticket);
- results = (CompilerResults) cache [key];
- if (!compiler.IsRebuildingPartial)
- if (results != null)
- return results;
- CodeDomProvider comp = compiler.Provider;
- CompilerParameters options = compiler.CompilerParameters;
- GetExtraAssemblies (options);
- results = comp.CompileAssemblyFromDom (options, compiler.CompileUnit);
- List <string> dependencies = compiler.Parser.Dependencies;
- if (dependencies != null && dependencies.Count > 0) {
- string [] deps = dependencies.ToArray ();
- HttpContext ctx = HttpContext.Current;
- HttpRequest req = ctx != null ? ctx.Request : null;
- if (req == null)
- throw new HttpException ("No current context, cannot compile.");
-
- for (int i = 0; i < deps.Length; i++)
- deps [i] = req.MapPath (deps [i]);
-
- cache.Insert (key, results, new CacheDependency (deps));
- }
- } finally {
- Monitor.Exit (ticket);
- if (acquired)
- ReleaseCompilationTicket (key);
- }
- return results;
- }
- public static CompilerResults Compile (WebServiceCompiler compiler)
- {
- string key = cachePrefix + compiler.Parser.PhysicalPath;
- Cache cache = HttpRuntime.InternalCache;
- CompilerResults results = (CompilerResults) cache [key];
- if (results != null)
- return results;
- object ticket;
- bool acquired = AcquireCompilationTicket (key, out ticket);
- try {
- Monitor.Enter (ticket);
- results = (CompilerResults) cache [key];
- if (results != null)
- return results;
- CodeDomProvider comp = compiler.Provider;
- CompilerParameters options = compiler.CompilerParameters;
- GetExtraAssemblies (options);
-
- results = comp.CompileAssemblyFromFile (options, compiler.InputFile);
- string [] deps = (string []) compiler.Parser.Dependencies.ToArray (typeof (string));
- cache.Insert (key, results, new CacheDependency (deps));
- } finally {
- Monitor.Exit (ticket);
- if (acquired)
- ReleaseCompilationTicket (key);
- }
- return results;
- }
- internal static CompilerParameters GetOptions (ICollection assemblies)
- {
- CompilerParameters options = new CompilerParameters ();
- if (assemblies != null) {
- StringCollection coll = options.ReferencedAssemblies;
- foreach (string str in assemblies)
- coll.Add (str);
- }
- GetExtraAssemblies (options);
- return options;
- }
- public static CompilerResults Compile (string language, string key, string file, ArrayList assemblies)
- {
- return Compile (language, key, file, assemblies, false);
- }
-
- public static CompilerResults Compile (string language, string key, string file, ArrayList assemblies, bool debug)
- {
- Cache cache = HttpRuntime.InternalCache;
- CompilerResults results = (CompilerResults) cache [cachePrefix + key];
- if (results != null)
- return results;
- if (!Directory.Exists (dynamicBase))
- Directory.CreateDirectory (dynamicBase);
- object ticket;
- bool acquired = AcquireCompilationTicket (cachePrefix + key, out ticket);
- try {
- Monitor.Enter (ticket);
- results = (CompilerResults) cache [cachePrefix + key];
- if (results != null)
- return results;
- CodeDomProvider provider = null;
- int warningLevel;
- string compilerOptions;
- string tempdir;
- provider = BaseCompiler.CreateProvider (language, out compilerOptions, out warningLevel, out tempdir);
- if (provider == null)
- throw new HttpException ("Configuration error. Language not supported: " +
- language, 500);
- CodeDomProvider compiler = provider;
- CompilerParameters options = GetOptions (assemblies);
- options.IncludeDebugInformation = debug;
- options.WarningLevel = warningLevel;
- options.CompilerOptions = compilerOptions;
-
- TempFileCollection tempcoll = new TempFileCollection (tempdir, true);
- string dllfilename = Path.GetFileName (tempcoll.AddExtension ("dll", true));
- options.OutputAssembly = Path.Combine (dynamicBase, dllfilename);
- results = compiler.CompileAssemblyFromFile (options, file);
- ArrayList realdeps = new ArrayList (assemblies.Count + 1);
- realdeps.Add (file);
- for (int i = assemblies.Count - 1; i >= 0; i--) {
- string current = (string) assemblies [i];
- if (Path.IsPathRooted (current))
- realdeps.Add (current);
- }
- string [] deps = (string []) realdeps.ToArray (typeof (string));
- cache.Insert (cachePrefix + key, results, new CacheDependency (deps));
- } finally {
- Monitor.Exit (ticket);
- if (acquired)
- ReleaseCompilationTicket (cachePrefix + key);
- }
- return results;
- }
- public static Type CompileAndGetType (string typename, string language, string key,
- string file, ArrayList assemblies)
- {
- CompilerResults result = CachingCompiler.Compile (language, key, file, assemblies);
- if (result.NativeCompilerReturnValue != 0) {
- using (StreamReader reader = new StreamReader (file)) {
- throw new CompilationException (file, result.Errors, reader.ReadToEnd ());
- }
- }
- Assembly assembly = result.CompiledAssembly;
- if (assembly == null) {
- using (StreamReader reader = new StreamReader (file)) {
- throw new CompilationException (file, result.Errors, reader.ReadToEnd ());
- }
- }
-
- Type type = assembly.GetType (typename, true);
- InsertType (type, file);
- return type;
- }
- static void GetExtraAssemblies (CompilerParameters options)
- {
- StringCollection refAsm = options.ReferencedAssemblies;
- string asmLocation;
- string asmName;
- ArrayList al = WebConfigurationManager.ExtraAssemblies;
-
- if (al != null && al.Count > 0) {
- foreach (object o in al) {
- asmName = o as string;
- if (asmName != null && !refAsm.Contains (asmName))
- refAsm.Add (asmName);
- }
- }
- Assembly asm;
- IList list = BuildManager.CodeAssemblies;
- if (list != null && list.Count > 0) {
- foreach (object o in list) {
- asm = o as Assembly;
- if (asm == null)
- continue;
- asmName = asm.Location;
- if (asmName != null && !refAsm.Contains (asmName))
- refAsm.Add (asmName);
- }
- }
-
- list = BuildManager.TopLevelAssemblies;
- if (list != null && list.Count > 0) {
- foreach (object o in list) {
- asm = o as Assembly;
- if (o == null)
- continue;
- asmName = asm.Location;
- if (!refAsm.Contains (asmName))
- refAsm.Add (asmName);
- }
- }
- CompilationSection cfg = WebConfigurationManager.GetWebApplicationSection ("system.web/compilation") as CompilationSection;
- AssemblyCollection asmcoll = cfg != null ? cfg.Assemblies : null;
- if (asmcoll == null)
- return;
- foreach (AssemblyInfo ai in asmcoll) {
- asmLocation = GetAssemblyLocationFromName (ai.Assembly);
-
- if (asmLocation == null || refAsm.Contains (asmLocation))
- continue;
- refAsm.Add (asmLocation);
- }
- }
- static string GetAssemblyLocationFromName (string name)
- {
- Assembly asm = assemblyCache [name] as Assembly;
- if (asm != null)
- return asm.Location;
- try {
- asm = Assembly.Load (name);
- } catch {
- }
- if (asm == null)
- return null;
- assemblyCache [name] = asm;
- return asm.Location;
- }
-
- static bool AcquireCompilationTicket (string key, out object ticket)
- {
- lock (compilationTickets.SyncRoot) {
- ticket = compilationTickets [key];
- if (ticket == null) {
- ticket = new object ();
- compilationTickets [key] = ticket;
- return true;
- }
- }
- return false;
- }
- static void ReleaseCompilationTicket (string key)
- {
- lock (compilationTickets.SyncRoot) {
- compilationTickets.Remove (key);
- }
- }
- }
- }