Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Hosting / ISAPIRuntime.cs / 2 / ISAPIRuntime.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * The ASP.NET runtime services * * Copyright (c) 1998 Microsoft Corporation */ namespace System.Web.Hosting { using System.Runtime.InteropServices; using System.Collections; using System.Reflection; using System.Threading; using System.Web; using System.Web.Management; using System.Web.Util; using System.Globalization; using System.Security.Permissions; ////// ///[To be supplied.] ///// NOTE: There is no link demand here because it causes a 7% perf regression. // there is a Demand on the .ctor for ISAPIRuntime, which provides the same level of // security, except that we only take a one time perf hit when an instance is created. [ComImport, Guid("08a2c56f-7c16-41c1-a8be-432917a1a2d1"), System.Runtime.InteropServices.InterfaceTypeAttribute(System.Runtime.InteropServices.ComInterfaceType.InterfaceIsIUnknown)] public interface IISAPIRuntime { /// /// void StartProcessing(); ///[To be supplied.] ////// void StopProcessing(); ///[To be supplied.] ////// [return: MarshalAs(UnmanagedType.I4)] int ProcessRequest( [In] IntPtr ecb, [In, MarshalAs(UnmanagedType.I4)] int useProcessModel); ///[To be supplied.] ////// void DoGCCollect(); } ///[To be supplied.] ////// ///[To be supplied.] ///// NOTE: There is no link demand here because it causes a 7% perf regression. // there is a Demand on the .ctor for ISAPIRuntime, which provides the same level of // security, except that we only take a one time perf hit when an instance is created. public sealed class ISAPIRuntime : MarshalByRefObject, IISAPIRuntime, IRegisteredObject { // WARNING: do not modify without making corresponding changes in appdomains.h private const int WORKER_REQUEST_TYPE_IN_PROC = 0x0; private const int WORKER_REQUEST_TYPE_OOP = 0x1; private const int WORKER_REQUEST_TYPE_IN_PROC_VERSION_2 = 0x2; // to control removal from unmanaged table (to it only once) private static int _isThisAppDomainRemovedFromUnmanagedTable; [SecurityPermission(SecurityAction.Demand, Unrestricted = true)] [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)] public ISAPIRuntime() { HostingEnvironment.RegisterObject(this); } public override Object InitializeLifetimeService() { return null; // never expire lease } /// /// public void StartProcessing() { Debug.Trace("ISAPIRuntime", "StartProcessing"); } ///[To be supplied.] ////// public void StopProcessing() { Debug.Trace("ISAPIRuntime", "StopProcessing"); HostingEnvironment.UnregisterObject(this); } /* * Process one ISAPI request * * @param ecb ECB * @param useProcessModel flag set to true when out-of-process */ ///[To be supplied.] ////// public int ProcessRequest(IntPtr ecb, int iWRType) { IntPtr pHttpCompletion = IntPtr.Zero; if (iWRType == WORKER_REQUEST_TYPE_IN_PROC_VERSION_2) { pHttpCompletion = ecb; ecb = UnsafeNativeMethods.GetEcb(pHttpCompletion); } ISAPIWorkerRequest wr = null; try { bool useOOP = (iWRType == WORKER_REQUEST_TYPE_OOP); wr = ISAPIWorkerRequest.CreateWorkerRequest(ecb, useOOP); wr.Initialize(); // check if app path matches (need to restart app domain?) String wrPath = wr.GetAppPathTranslated(); String adPath = HttpRuntime.AppDomainAppPathInternal; if (adPath == null || StringUtil.EqualsIgnoreCase(wrPath, adPath)) { HttpRuntime.ProcessRequestNoDemand(wr); return 0; } else { // need to restart app domain HttpRuntime.ShutdownAppDomain(ApplicationShutdownReason.PhysicalApplicationPathChanged, SR.GetString(SR.Hosting_Phys_Path_Changed, adPath, wrPath)); return 1; } } catch(Exception e) { try { WebBaseEvent.RaiseRuntimeError(e, this); } catch {} // Have we called HSE_REQ_DONE_WITH_SESSION? If so, don't re-throw. if (wr != null && wr.Ecb == IntPtr.Zero) { if (pHttpCompletion != IntPtr.Zero) { UnsafeNativeMethods.SetDoneWithSessionCalled(pHttpCompletion); } // if this is a thread abort exception, cancel the abort if (e is ThreadAbortException) { Thread.ResetAbort(); } // IMPORTANT: if this thread is being aborted because of an AppDomain.Unload, // the CLR will still throw an AppDomainUnloadedException. The native caller // must special case COR_E_APPDOMAINUNLOADED(0x80131014) and not // call HSE_REQ_DONE_WITH_SESSION more than once. return 0; } // re-throw if we have not called HSE_REQ_DONE_WITH_SESSION throw; } } ///[To be supplied.] ////// public void DoGCCollect() { for (int c = 10; c > 0; c--) { System.GC.Collect(); } } ///[To be supplied.] ///void IRegisteredObject.Stop(bool immediate) { RemoveThisAppDomainFromUnmanagedTable(); HostingEnvironment.UnregisterObject(this); } private static String s_thisAppDomainsIsapiAppId; internal void SetThisAppDomainsIsapiAppId(String appId) { Debug.Trace("ISAPIRuntime", "SetThisAppDomainsIsapiAppId appId=" + appId); s_thisAppDomainsIsapiAppId = appId; } internal static void RemoveThisAppDomainFromUnmanagedTable() { if (Interlocked.Exchange(ref _isThisAppDomainRemovedFromUnmanagedTable, 1) != 0) { return; } try { if (s_thisAppDomainsIsapiAppId != null ) { Debug.Trace("ISAPIRuntime", "Calling UnsafeNativeMethods.AppDomainRestart appId=" + s_thisAppDomainsIsapiAppId + " (AppDomainAppId=" + HttpRuntime.AppDomainAppIdInternal + ")"); UnsafeNativeMethods.AppDomainRestart(s_thisAppDomainsIsapiAppId); } HttpRuntime.AddAppDomainTraceMessage(SR.GetString(SR.App_Domain_Restart)); } catch { } } } }
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