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//
// CachingCompiler
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
// Ankit Jain (jankit@novell.com)
//
// (C) 2002 Ximian, Inc (http://www.ximian.com)
// (c) Copyright Novell, Inc. (http://www.novell.com)
// Copyright (C) 2006 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.
//
// Code taken from System.Web.Compilation.CachingCompiler
//
using System;
using System.CodeDom.Compiler;
using System.Collections;
using System.Collections.Specialized;
using System.IO;
using System.Reflection;
using System.Threading;
using System.Web;
using System.Web.UI;
using System.Web.Caching;
using System.Web.Configuration;
namespace System.ServiceModel.Channels
{
class CachingCompiler
{
static string dynamicBase = AppDomain.CurrentDomain.SetupInformation.DynamicBase;
static Hashtable compilationTickets = new Hashtable ();
public const string cachePrefix = "@@Assembly";
public const string cacheTypePrefix = "@@@Type";
public static void InsertTypeFileDep (Type type, string filename)
{
CacheDependency dep = new CacheDependency (filename);
HttpRuntime.Cache.Insert (cacheTypePrefix + filename, type, dep);
}
public static void InsertType (Type type, string filename, string key,
CacheItemRemovedCallback removed_callback)
{
//string [] cacheKeys = new string [] { cachePrefix + filename };
//CacheDependency dep = new CacheDependency (null, cacheKeys);
CacheDependency dep = new CacheDependency (filename);
HttpRuntime.Cache.Insert (cacheTypePrefix + key, type, dep,
Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration,
CacheItemPriority.Normal, removed_callback);
}
public static Type GetTypeFromCache (string filename)
{
return (Type) HttpRuntime.Cache [cacheTypePrefix + filename];
}
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);
}
return options;
}
public static CompilerResults Compile (string language, string key, string source,
string filename, ArrayList assemblies)
{
Cache cache = HttpRuntime.Cache;
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;
CompilationSection config = (CompilationSection) WebConfigurationManager.GetSection ("system.web/compilation");
Compiler c = config.Compilers[language];
Type t = Type.GetType (c.Type, true);
CodeDomProvider provider = Activator.CreateInstance (t) as CodeDomProvider;
if (provider == null)
throw new HttpException ("Configuration error. Language not supported: " +
language, 500);
CompilerParameters options = GetOptions (assemblies);
TempFileCollection tempcoll = new TempFileCollection (config.TempDirectory, true);
string dllfilename = Path.GetFileName (tempcoll.AddExtension ("dll", true));
options.OutputAssembly = Path.Combine (dynamicBase, dllfilename);
results = provider.CompileAssemblyFromSource (options, source);
ArrayList realdeps = new ArrayList (assemblies.Count + 1);
realdeps.Add (filename);
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 results
cache.Insert (cachePrefix + key, results, new CacheDependency (deps));
} finally {
Monitor.Exit (ticket);
if (acquired)
ReleaseCompilationTicket (cachePrefix + key);
}
return results;
}
public static Type CompileAndGetType (ServiceHostParser parser,
string key, CacheItemRemovedCallback removed_callback)
{
CompilerResults result = CachingCompiler.Compile (parser.Language, key, parser.Program, parser.Filename, parser.Assemblies);
if (result.NativeCompilerReturnValue != 0)
throw new CompilationException (parser.Filename, result.Errors, parser.Program);
Assembly assembly = result.CompiledAssembly;
if (assembly == null)
throw new CompilationException (parser.Filename, result.Errors, parser.Program);
Type type = assembly.GetType (parser.TypeName, true);
//cache type
InsertType (type, parser.Filename, key, removed_callback);
return type;
}
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);
}
}
}
}
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