#8039: RTS linker: unloadObj() does not actually unload the code --------------------------------------+------------------------------------ Reporter: simonmar | Owner: simonmar Type: task | Status: closed Priority: high | Milestone: 7.8.1 Component: Runtime System | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: rts/linker_unload | Blocked By: Blocking: | Related Tickets: --------------------------------------+------------------------------------ Comment (by heisenbug): Replying to [comment:16 simonmar]:

The big missing piece with unloading of .so's is knowing their boundaries in memory

[http://eli.thegreenplace.net/2011/08/25/load-time-relocation-of-shared- libraries Eli Bendersky's article] suggests to use the [http://linux.die.net/man/3/dl_iterate_phdr dl_iterate_phdr] function for finding information about loaded libraries. Seems to be linux only. There is a [http://stackoverflow.com/questions/10009043/dl-iterate-phdr- equivalent-on-mac workaround on OSX], though, on !StackOverflow. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8039#comment:17 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler