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Questions tagged [resource-leak]

208 questions
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Do I need a WOW64 dump for GDI Handle analysis?

I'm debugging a potential GDI Handle Leak. Thanks to @Alois Kraus, there is a WinDbg script which performs a handle count. From my debugging sessions, especially for .NET, I find that usually, it's better to have 32-bit dumps of 32-bit processes and…
Thomas Weller
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Why does this code generate a "Potential resource leak" warning?

Eclipse (Juno) gives the following warning: Potential resource leak: 'os' may not be closed at the first line of the try body in this code: static void saveDetails(byte[] detailsData) { OutputStream os = null; try { os =…
Ted Hopp
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How to trace handle leaks?

In one of my applications I observe an increasing number of handles. The number is incremented roughly every second without using the application, so there must be a handle leak in some part of the background processing code. How can I trace such…
jpfollenius
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What's a good pattern for a java unit test that ensures that you are properly closing files?

I have an issue in my codebase where we are not properly closing file handles, or probably streams. We eventually get a TooManyOpenFiles exception under very heavy load. Based on the output of lsof, we are pretty sure we know where the leak is (in…
Mike Sokolov
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Lwt leaking file descriptors, not sure if bug or my code

(Cross posted to lwt github issues) I have boiled down my usage to this code sample which will leak file descriptors. say you have: #require "lwt.unix" open Lwt.Infix let echo ic oc = Lwt_io.(write_chars oc (read_chars ic)) let program = let…
user1971598
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On Crashlytics enabled, getting resource leaks

Hiii, I have added crashlytics for error reporting and when I enable strict mode, I am getting resource leaks. Any idea where I am wrong, A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on…
Abhishek Patidar
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socket handle leak in pyzmq?

Hi good people of StackOverflow. I'm using pyzmq and I've got some long-running processes, which led to a discovery that socket handles are being left open. I've narrowed the offending code down to the following: import zmq uri =…
Cari
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Will stream classes or connections considered as a resource leak in Java

Java has no lifetime for an object, this is managed by the garbage collector. And if I use some IO classes without closing it, or some DBConnection, will this considered a resource leak? In another words, will IO object be collected and destroyed by…
Joey.Z
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1 answer

Resource leak issues in Eclipse?

I made some tests (using Windows 7, Eclipse Juno 4.2.1 and Java 7 SE) and found that if a method did not explicitly return in the catch-block and if the object was declared outside the try/catch, then no "resource leak" warning was signaled. Does…
mortensi
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Is it possible to close a Reader without closing the stream?

I have a method which accepts an InputStream (of binary data) and serializes it to XML. In order to do so, it wraps the stream with a base64 encoder and a Reader to convert it to character data. However, since the InputStream is passed in as a…
Lucas
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Is this a known GDI leak bug in .NET Framework/.NET Core/.NET 6?

I have a .NET Framework Console app (4.6.2 and 4.7.2 exhibit this issue). It opens a SaveFileDialog 5 times in a row, each time waiting for the previous dialog to close. Looking at the GDI column in TaskManager, I'm seeing the GDI object count start…
pushkin
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Firebase Strictmode resource leak

After converting from Crashlytics via Fabric to Crashlytics via Firebase, I started seeing the below call stack in debug runs where StrictMode is enabled looking for resource leaks. StrictMode is in use with this code, only on debug…
SKOlson
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What unnamed GDI resources could I be leaking

I ran an overnight stress test of my application, and when i came in this morning the software had crashed from a Windows error. The error occurred because the process was obviously out of GDI handles: Process Explorer Task Manager The next thing…
Ian Boyd
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Hundreds of custom UserControls create thousands of USER Objects

I'm creating a dashboard application that shows hundreds of "items" on a FlowLayoutPanel. Each "item" is a UserControl that is made up of 12 textboxes or labels. My app queries a database and then creates an "item" instance for each record,…
Andy Blackman
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Is there a difference in disposing Icon and Bitmap?

I was debugging resource leaks in my application and created a test app to test GDI object leaks. In OnPaint I create new icons and new bitmaps without disposing them. After that I check the increase of GDi objects in task manager for each of the…
username
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