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comparison src/share/vm/gc_implementation/parallelScavenge/cardTableExtension.cpp @ 10969:a837fa3d3f86

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8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint Summary: Detect mmap() commit failures in Linux and Solaris os::commit_memory() impls and call vm_exit_out_of_memory(). Add os::commit_memory_or_exit(). Also tidy up some NMT accounting and some mmap() return value checking. Reviewed-by: zgu, stefank, dholmes, dsamersoff
author dcubed
date Thu, 13 Jun 2013 11:16:38 -0700
parents 746b070f5022
children 63a4eb8bcd23 78bbf4d43a14
comparison
equal deleted inserted replaced
10405:f2110083203d 10969:a837fa3d3f86
1 /* 1 /*
2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
563 HeapWord* new_end_for_commit = 563 HeapWord* new_end_for_commit =
564 MIN2(cur_committed.end(), _guard_region.start()); 564 MIN2(cur_committed.end(), _guard_region.start());
565 if(new_start_aligned < new_end_for_commit) { 565 if(new_start_aligned < new_end_for_commit) {
566 MemRegion new_committed = 566 MemRegion new_committed =
567 MemRegion(new_start_aligned, new_end_for_commit); 567 MemRegion(new_start_aligned, new_end_for_commit);
568 if (!os::commit_memory((char*)new_committed.start(), 568 os::commit_memory_or_exit((char*)new_committed.start(),
569 new_committed.byte_size())) { 569 new_committed.byte_size(), !ExecMem,
570 vm_exit_out_of_memory(new_committed.byte_size(), OOM_MMAP_ERROR, 570 "card table expansion");
571 "card table expansion");
572 }
573 } 571 }
574 result = true; 572 result = true;
575 } else if (new_start_aligned > cur_committed.start()) { 573 } else if (new_start_aligned > cur_committed.start()) {
576 // Shrink the committed region 574 // Shrink the committed region
577 #if 0 // uncommitting space is currently unsafe because of the interactions 575 #if 0 // uncommitting space is currently unsafe because of the interactions