spidermonkeydotnet Work Item Rss Feed

COMMENTED ISSUE: RE: Attempting To Read or Write Protected Memory

wildfrog — Wed, 27 Sep 2006 23:18:40 GMT

REOPENING Ok, so I tested the 0.1.4 version but (if stressed) the problem still remains. It seems to be that some callbacks are performed on delegates that has been collected by the GC. The script I ran was: for (var i = 0; i < 100000; i++) { var c = new Customer();c.name = 'Franky';c.age =32;c.computeReduction();c.age } And the response was: CallbackOnCollectedDelegate was detected Message: A callback was made on a garbage collected delegate of type 'spidermonkey-dotnet!SpiderMonkey.JS+JS_ResolveDelegate::Invoke'. This may cause application crashes, corruption and data loss. When passing delegates to unmanaged code, they must be kept alive by the managed application until it is guaranteed that they will never be called. Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at SpiderMonkey.JS.JS_EvaluateScript(IntPtr cx, IntPtr obj, String bytes, UInt32 length, String filename, UInt32 lineno, IntPtr rval) at smnettest.Program.Main(String[] args) in C:\tmp\smdn-0.1.4\smnet-test\Program.cs:line 97 - petter Comments: ** Comment from web user: wildfrog ** I tested the stable tree of the 6885 code release and the problem seems to have vanished. It was still present in the development tree. - petter

COMMENTED ISSUE: RE: Attempting To Read or Write Protected Memory

abstraktmethodz — Wed, 27 Sep 2006 01:28:00 GMT

REOPENING Ok, so I tested the 0.1.4 version but (if stressed) the problem still remains. It seems to be that some callbacks are performed on delegates that has been collected by the GC. The script I ran was: for (var i = 0; i < 100000; i++) { var c = new Customer();c.name = 'Franky';c.age =32;c.computeReduction();c.age } And the response was: CallbackOnCollectedDelegate was detected Message: A callback was made on a garbage collected delegate of type 'spidermonkey-dotnet!SpiderMonkey.JS+JS_ResolveDelegate::Invoke'. This may cause application crashes, corruption and data loss. When passing delegates to unmanaged code, they must be kept alive by the managed application until it is guaranteed that they will never be called. Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at SpiderMonkey.JS.JS_EvaluateScript(IntPtr cx, IntPtr obj, String bytes, UInt32 length, String filename, UInt32 lineno, IntPtr rval) at smnettest.Program.Main(String[] args) in C:\tmp\smdn-0.1.4\smnet-test\Program.cs:line 97 - petter Comments: ** Comment from web user: abstraktmethodz ** I just ran this test till my memory peaked, for several minutes. No luck reproducing this. I think there are some bad builds of the js32.dll engine running around, try grabbing a fresh copy from the stable tree.

CREATED ISSUE: RE: Attempting To Read or Write Protected Memory

abstraktmethodz — Tue, 26 Sep 2006 17:02:25 GMT

COMMENTED ISSUE: RE: Attempting To Read or Write Protected Memory

wildfrog — Tue, 26 Sep 2006 06:54:04 GMT

Ok, so I tested the 0.1.4 version but (if stressed) the problem still remains. It seems to be that some callbacks are performed on delegates that has been collected by the GC. The script I ran was: for (var i = 0; i < 100000; i++) { var c = new Customer();c.name = 'Franky';c.age =32;c.computeReduction();c.age } And the response was: CallbackOnCollectedDelegate was detected Message: A callback was made on a garbage collected delegate of type 'spidermonkey-dotnet!SpiderMonkey.JS+JS_ResolveDelegate::Invoke'. This may cause application crashes, corruption and data loss. When passing delegates to unmanaged code, they must be kept alive by the managed application until it is guaranteed that they will never be called. Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at SpiderMonkey.JS.JS_EvaluateScript(IntPtr cx, IntPtr obj, String bytes, UInt32 length, String filename, UInt32 lineno, IntPtr rval) at smnettest.Program.Main(String[] args) in C:\tmp\smdn-0.1.4\smnet-test\Program.cs:line 97 - petter Comments: ** Comment from web user: wildfrog ** Is still get the AccessViolationExpection running changeset 6765. The more 'resource challenged' my computer is, the easier it is to reproduce, so I still believe that it's calling back on collected delegates (or similar). - petter

CLOSED ISSUE: RE: Attempting To Read or Write Protected Memory

abstraktmethodz — Mon, 25 Sep 2006 22:53:42 GMT

CREATED ISSUE: RE: Attempting To Read or Write Protected Memory

abstraktmethodz — Mon, 25 Sep 2006 14:43:39 GMT

CLOSED ISSUE: JSVAL_IS_STRING

abstraktmethodz — Wed, 20 Sep 2006 02:58:36 GMT

** Add all missing macros Howdy, I've noticed that you are missing the C# equivlent of this macro maybe in the next release you could add it. Thx :)

CREATED ISSUE: JSVAL_IS_STRING

abstraktmethodz — Tue, 19 Sep 2006 13:46:42 GMT

** Add all missing macros Howdy, I've noticed that you are missing the C# equivlent of this macro maybe in the next release you could add it. Thx :)

CLOSED ISSUE: Attempting To Read or Write Protected Memory?

abstraktmethodz — Fri, 15 Sep 2006 21:05:00 GMT

I am currently developing a chat server for Ares P2P in vb.net and I have been struggling with embedding SpiderMonkey into it for some time now. I am taking a rather different approach to actually initializing the runtime and loading the scripts. but I am still following the same basic procedure to do so.. the runtime seems to initialize with a problem, it is during the loading of the script that I begin running into this problem. I am trying to assign a "global_Class" JSClass that has members such as alert, print, topic, hostname, sendPM and many objects like String, Array, Math, and more that the server actually displays to the chatroom, or to a given user. I have implemented a method named "JS_Finalize" which has a different routine then actually destroying the runtime.. and is as follows... Public Shared Sub JS_Finalize(ByVal cx As IntPtr, ByVal obj As IntPtr, ByVal name As String) Dim attrsp As IntPtr = IntPtr.Zero Dim foundp As IntPtr = IntPtr.Zero JS.JS_GetPropertyAttributes(cx, obj, name, attrsp, foundp) Dim attr As Int32 = (JS.JSPROP_PERMANENT & JS.JSPROP_READONLY) JS.JS_SetPropertyAttributes(cx, obj, name, Convert.ToUInt32(attr), foundp) End Sub now I am however fairly new to spidermonkey but I seem to get the basic Idea down. If you could privide me with information as to why that is throwing this exception or would like to see my "JS_InitScript" method to see exactly how I am implementing this routine I would be glad to post again. Thanks in advance. Ryan Comments: user passed in null values to output parameters.

CREATED ISSUE: Attempting To Read or Write Protected Memory?

abstraktmethodz — Fri, 15 Sep 2006 20:49:00 GMT