From 91f6898b26caa8f74533dbd90478cf4103251abe Mon Sep 17 00:00:00 2001 From: Melanie Date: Thu, 6 Aug 2009 22:03:20 +0100 Subject: |From: James J Greensky |Date: Wed, 5 Aug 2009 09:51:52 -0700 |Subject: [PATCH] Closed two major memory leaks for scripted objects | |Two major memory leaks for the scripted objects were fixed |- One leak had to do with remoting acrossing app domains. When a script and | its controlling agent communicate across an application boundary, it calls | functions on a stub proxy object that then invokes the remote method on | the object in the other app domain. These stub objects (two for each script) | were setup to have infinate lifetimes and were never being garbage collected. |- The second leak was the result of adding a scene object part instance method | to a scene event and never removing it. This cause the event's delegate list | to maintain a link to that object which is then never freed as the scene event | object is never destroyed. Patch applied, please direct feedback to me. Possible issue: Longtime idle scripts like vendors may fail. --- .../ScriptEngine/Shared/Api/Runtime/Executor.cs | 22 +------------------ .../Shared/Api/Runtime/LSL_Constants.cs | 2 +- .../ScriptEngine/Shared/Api/Runtime/ScriptBase.cs | 25 ++++++++++++++-------- .../Shared/Api/Runtime/ScriptSponsor.cs | 12 +++++++---- 4 files changed, 26 insertions(+), 35 deletions(-) (limited to 'OpenSim/Region/ScriptEngine/Shared/Api/Runtime') diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/Executor.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/Executor.cs index 2501752..7f67599 100644 --- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/Executor.cs +++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/Executor.cs @@ -35,7 +35,7 @@ using log4net; namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase { - public class Executor : MarshalByRefObject + public class Executor { // private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); @@ -89,26 +89,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase initEventFlags(); } - /// - /// Make sure our object does not timeout when in AppDomain. (Called by ILease base class) - /// - /// - public override Object InitializeLifetimeService() - { - //m_log.Debug("Executor: InitializeLifetimeService()"); - // return null; - ILease lease = (ILease)base.InitializeLifetimeService(); - - if (lease.CurrentState == LeaseState.Initial) - { - lease.InitialLeaseTime = TimeSpan.Zero; // TimeSpan.FromMinutes(1); - // lease.SponsorshipTimeout = TimeSpan.FromMinutes(2); - // lease.RenewOnCallTime = TimeSpan.FromSeconds(2); - } - return lease; - } - - public scriptEvents GetStateEventFlags(string state) { //m_log.Debug("Get event flags for " + state); diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs index 9068634..753ca55 100644 --- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs +++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs @@ -32,7 +32,7 @@ using LSLInteger = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLInteger; namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase { - public partial class ScriptBaseClass : MarshalByRefObject + public partial class ScriptBaseClass { // LSL CONSTANTS public static readonly LSLInteger TRUE = new LSLInteger(1); diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/ScriptBase.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/ScriptBase.cs index 964fe4c..d119a77 100644 --- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/ScriptBase.cs +++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/ScriptBase.cs @@ -26,6 +26,7 @@ */ using System; +using System.Runtime.Remoting; using System.Runtime.Remoting.Lifetime; using System.Security.Permissions; using System.Threading; @@ -34,26 +35,23 @@ using System.Collections; using System.Collections.Generic; using OpenSim.Region.ScriptEngine.Interfaces; using OpenSim.Region.ScriptEngine.Shared; +using OpenSim.Region.ScriptEngine.Shared.Api.Runtime; namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase { public partial class ScriptBaseClass : MarshalByRefObject, IScript { private Dictionary inits = new Dictionary(); + private ScriptSponsor m_sponser; - // Object expires if we don't keep it alive - // sponsor will be added on object load - [SecurityPermissionAttribute(SecurityAction.Demand, - Flags = SecurityPermissionFlag.Infrastructure)] public override Object InitializeLifetimeService() { ILease lease = (ILease)base.InitializeLifetimeService(); if (lease.CurrentState == LeaseState.Initial) { - lease.InitialLeaseTime = TimeSpan.Zero; -// lease.InitialLeaseTime = TimeSpan.FromMinutes(1); -// lease.SponsorshipTimeout = TimeSpan.FromMinutes(2); -// lease.RenewOnCallTime = TimeSpan.FromSeconds(2); + lease.InitialLeaseTime = TimeSpan.FromMinutes(1.0); + lease.RenewOnCallTime = TimeSpan.FromSeconds(10.0); + lease.SponsorshipTimeout = TimeSpan.FromMinutes(1.0); } return lease; } @@ -66,7 +64,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase } #endif - public ScriptBaseClass() { m_Executor = new Executor(this); @@ -81,6 +78,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase inits[type] = mi; } } + + m_sponser = new ScriptSponsor(); } private Executor m_Executor = null; @@ -112,6 +111,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase if (!inits.ContainsKey(api)) return; + ILease lease = (ILease)RemotingServices.GetLifetimeService(data as MarshalByRefObject); + lease.Register(m_sponser); + MethodInfo mi = inits[api]; Object[] args = new Object[1]; @@ -122,6 +124,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase m_InitialValues = GetVars(); } + public void Close() + { + m_sponser.Close(); + } + public Dictionary GetVars() { Dictionary vars = new Dictionary(); diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/ScriptSponsor.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/ScriptSponsor.cs index a2da14e..977ac30 100644 --- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/ScriptSponsor.cs +++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/ScriptSponsor.cs @@ -32,15 +32,19 @@ using System.Text; namespace OpenSim.Region.ScriptEngine.Shared.Api.Runtime { - [Serializable] public class ScriptSponsor : MarshalByRefObject, ISponsor { - // In theory: I execute, therefore I am. - // If GC collects this class then sponsorship will expire + private bool m_closed = false; + public TimeSpan Renewal(ILease lease) { - return TimeSpan.FromMinutes(2); + if (!m_closed) + return lease.InitialLeaseTime; + return TimeSpan.FromTicks(0); } + + public void Close() { m_closed = true; } + #if DEBUG // For tracing GC while debugging public static bool GCDummy = false; -- cgit v1.1