JDK-8263311 : Watch registry changes for remote printers update instead of polling
  • Type: Bug
  • Component: client-libs
  • Sub-Component: 2d
  • Affected Version: 7u241,8u231,11
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • OS: windows
  • Submitted: 2021-03-09
  • Updated: 2025-01-21
  • Resolved: 2021-03-18
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JDK 11 JDK 16 JDK 17 JDK 7 JDK 8 Other
11.0.12-oracleFixed 16.0.2Fixed 17 b15Fixed 7u311Fixed 8u301Fixed openjdk8u312Fixed
Related Reports
Relates :  
JDK-8241829 - Cleanup the code for PrinterJob on windows
Relates :  
JDK-8153732 - Windows remote printer changes do not reflect in lookupPrintServices()
Description
JDK-8153732 implemented polling for remote printers.
That bug description also mentions watching the registry for changes and links to the article which describes the method yet it does so in terms of WMI. Using WMI is not necessary to watch for the registry updates.

It is possible to replace polling mechanism with registry change notifications. If the registry at HKCU\Printers\Connections is updated, refresh the list of print services.
Comments
Fix Request(8u): Backport to 8u requested because it is a part of 8u301-oracle. Patch does not apply cleanly, review approval: https://mail.openjdk.java.net/pipermail/jdk8u-dev/2021-June/013982.html
09-06-2021
Fix Request (11u) Should get backported for parity with 11.0.12-oracle. Applies cleanly.
20-04-2021
Fix Request (16u) - Justification: Improved handling of remote printers - Risk Analysis: Low, uses Windows registry notification functions instead of polling for changes - Testing: Manual test case, RemotePrinterStatusRefresh.java The patch from jdk-dev (17) applies cleanly to 16u.
22-03-2021
Changeset: a85dc557 Author: Alexey Ivanov <aivanov@openjdk.org> Date: 2021-03-18 13:26:22 +0000 URL: https://git.openjdk.java.net/jdk/commit/a85dc557
18-03-2021