JDK-8260533 : Umbrella: Factor out common POSIX code
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: runtime
  • Priority: P4
  • Status: Closed
  • Resolution: Other
  • Submitted: 2021-01-27
  • Updated: 2021-02-02
  • Resolved: 2021-02-02
Related Reports
Blocks :  
JDK-8260534 - Factor out common POSIX code: perfMemory
Relates :  
JDK-8260262 - Use common code in function unmap_shared() in perfMemory_posix.cpp
Relates :  
JDK-8252324 - Signal related code should be shared among POSIX platforms
Relates :  
JDK-8260264 - Move common os_ inline methods to a common posix source file
Relates :  
JDK-8134540 - Much nearly duplicated code for PerfMemory support
Description
There appears to be significant amount of common POSIX code, which could be factored out and shared among platforms (Linux, BSD, AIX)

JDK-8252324 previously addressed common signal related POSIX code and factored it out nicely.

For JDK-8247846 I'm experimenting with "create_sharedmem_resources()" API in perfMemory_bsd.cpp which looks identical to its Linux/AIX counterparts.

It seems that any POSIX related files in:

hotspot/os/aix/
hotspot/os/linux/
hotspot/os/bsd/

should be assessed as a potential candidate for factoring common code, hence this umbrella bug.
Comments
There are existing umbrella enhancements, like https://bugs.openjdk.java.net/browse/JDK-8253795 (which is tracking JEP admittedly)
02-02-2021
RT Triage team: we do not track work items with an Umbrella bug. Either track these issues with a common label (e.g. "os"), or link them.
02-02-2021