message handling in OsiGlpkSolverInterface about osi

[svigerske]

Attachment osiglpk.patch by @svigerske created at 2006-12-26 19:35:25

setting message handler and loglevel also in branchAndBound()

[svigerske]

Comment by @svigerske created at 2007-03-11 14:44:46

I just tried the latest GLPK 4.15. The method lib_set_print_hook is now called lib_print_hook and the order of its arguments is reverted.
Hence, the print hook should be installed by

   lib_print_hook(OsiGlpkprintme, messageHandler());

Stefan

[svigerske]

Comment by @LouHafer created at 2007-06-01 00:49:17

More properly handled with set/getHintParameter. Will implement.

[svigerske]

Comment by @LouHafer created at 2007-06-01 00:49:17

Changing assignee from @mjsaltzman to @LouHafer.

[svigerske]

Comment by @LouHafer created at 2007-06-04 17:23:45

Fixed in trunk by implementing setHintParam. Did not use lib_set_print_hook idea. This would set a property of the underlying solver, not the OGSI object, so there would be real problems ensuring that the message handler held by glpk still existed (the supplying OGSI object may have been deleted, taking the message handler with it). OsiDoReducePrint now sets glpk and OGSI print levels. Hints for presolve, use of dual, and scaling also implemented.

[svigerske]

Comment by @LouHafer created at 2007-06-04 17:23:45

Resolution: fixed