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7007068: G1: refine the BOT during evac failure handling

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During evacuation failure handling we refine the BOT to reflect the location of all the objects in the regions we scan. The changeset includes some minor cleanup: a) non-product print_on() method on the G1 BOT class, b) added more complete BOT verification during heap / region verification, c) slight modification to the BOT set up for humongous regions to be more consistent with the BOT set up during evac failure handling, and d) removed a couple of unused methods.

Reviewed-by: johnc, ysr
This commit is contained in:
Antonios Printezis 2011-01-12 13:06:00 -05:00
parent d921d72f20
commit 5f21cb1b9b
7 changed files with 249 additions and 169 deletions
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4
hotspot/src/share/vm/gc_implementation/g1/heapRegionSeq.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -144,7 +144,7 @@ HeapRegionSeq::alloc_obj_from_region_index(int ind, size_t word_size) {
// will also update the BOT covering all the regions to reflect
// that there is a single object that starts at the bottom of the
// first region.
first_hr->set_startsHumongous(new_end);
first_hr->set_startsHumongous(new_top, new_end);
// Then, if there are any, we will set up the "continues
// humongous" regions.