Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/memory/cardTableModRefBS.cpp
src/share/vm/memory/cardTableModRefBS.cpp
- changeset 5255
- a837fa3d3f86
- parent 5103
- f9be75d21404
- child 5259
- ef57c43512d6
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| 5237:f2110083203d | 5255:a837fa3d3f86 |
|---|---|
| 108 assert(byte_for(high_bound-1) <= &_byte_map[_last_valid_index], "Checking end of map"); | 108 assert(byte_for(high_bound-1) <= &_byte_map[_last_valid_index], "Checking end of map"); |
| 109 | 109 |
| 110 jbyte* guard_card = &_byte_map[_guard_index]; | 110 jbyte* guard_card = &_byte_map[_guard_index]; |
| 111 uintptr_t guard_page = align_size_down((uintptr_t)guard_card, _page_size); | 111 uintptr_t guard_page = align_size_down((uintptr_t)guard_card, _page_size); |
| 112 _guard_region = MemRegion((HeapWord*)guard_page, _page_size); | 112 _guard_region = MemRegion((HeapWord*)guard_page, _page_size); |
| 113 if (!os::commit_memory((char*)guard_page, _page_size, _page_size)) { | 113 os::commit_memory_or_exit((char*)guard_page, _page_size, _page_size, |
| 114 // Do better than this for Merlin | 114 !ExecMem, "card table last card"); |
| 115 vm_exit_out_of_memory(_page_size, OOM_MMAP_ERROR, "card table last card"); | |
| 116 } | |
| 117 | |
| 118 *guard_card = last_card; | 115 *guard_card = last_card; |
| 119 | 116 |
| 120 _lowest_non_clean = | 117 _lowest_non_clean = |
| 121 NEW_C_HEAP_ARRAY(CardArr, max_covered_regions, mtGC); | 118 NEW_C_HEAP_ARRAY(CardArr, max_covered_regions, mtGC); |
| 122 _lowest_non_clean_chunk_size = | 119 _lowest_non_clean_chunk_size = |
| 310 // Must commit new pages. | 307 // Must commit new pages. |
| 311 MemRegion const new_committed = | 308 MemRegion const new_committed = |
| 312 MemRegion(cur_committed.end(), new_end_for_commit); | 309 MemRegion(cur_committed.end(), new_end_for_commit); |
| 313 | 310 |
| 314 assert(!new_committed.is_empty(), "Region should not be empty here"); | 311 assert(!new_committed.is_empty(), "Region should not be empty here"); |
| 315 if (!os::commit_memory((char*)new_committed.start(), | 312 os::commit_memory_or_exit((char*)new_committed.start(), |
| 316 new_committed.byte_size(), _page_size)) { | 313 new_committed.byte_size(), _page_size, |
| 317 // Do better than this for Merlin | 314 !ExecMem, "card table expansion"); |
| 318 vm_exit_out_of_memory(new_committed.byte_size(), OOM_MMAP_ERROR, | |
| 319 "card table expansion"); | |
| 320 } | |
| 321 // Use new_end_aligned (as opposed to new_end_for_commit) because | 315 // Use new_end_aligned (as opposed to new_end_for_commit) because |
| 322 // the cur_committed region may include the guard region. | 316 // the cur_committed region may include the guard region. |
| 323 } else if (new_end_aligned < cur_committed.end()) { | 317 } else if (new_end_aligned < cur_committed.end()) { |
| 324 // Must uncommit pages. | 318 // Must uncommit pages. |
| 325 MemRegion const uncommit_region = | 319 MemRegion const uncommit_region = |
