PATCH: swapped usage of idx_t and bm_word_t types in parMarkBitMap.cpp

[Dan Horák]

Hello,

I've created a patch [1] to fix swapped usage of idx_t and bm_word_t
types in
hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.cpp

The code currently uses a pointer to idx_t as an argument to
 BitMap::set_map(bm_word_t* map) which fails on s390.

For most platforms the idx_t and bm_word_t types are effectively the
same, so the interchange is uncaught, but on s390 (32-bit) the size_t is
"unsigned long" which makes it incompatible with "unsigned int".

This a follow-up of my earlier s390 related patch [2]

[1] http://fedora.danny.cz/openjdk/bitmap-1/webrev/
[2]
http://mail.openjdk.java.net/pipermail/hotspot-dev/2013-September/010913.html

Note: I'm Red Hat employee (dhorak at redhat.com), so I should be covered
by Red Hat's CLA for my contributions.


	With regards

		Dan