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src/share/vm/gc_implementation/g1/concurrentZFThread.hpp@f95d63e2154a (annotated)
src/share/vm/gc_implementation/g1/concurrentZFThread.hpp
Tue, 23 Nov 2010 13:22:55 -0800
- author
- stefank
- date
- Tue, 23 Nov 2010 13:22:55 -0800
- changeset 2314
- f95d63e2154a
- parent 1907
- c18cbe5936b8
- permissions
- -rw-r--r--
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| ysr@777 | 1 | /* |
| stefank@2314 | 2 | * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
| ysr@777 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| ysr@777 | 4 | * |
| ysr@777 | 5 | * This code is free software; you can redistribute it and/or modify it |
| ysr@777 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| ysr@777 | 7 | * published by the Free Software Foundation. |
| ysr@777 | 8 | * |
| ysr@777 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| ysr@777 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| ysr@777 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| ysr@777 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| ysr@777 | 13 | * accompanied this code). |
| ysr@777 | 14 | * |
| ysr@777 | 15 | * You should have received a copy of the GNU General Public License version |
| ysr@777 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| ysr@777 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| ysr@777 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| ysr@777 | 22 | * |
| ysr@777 | 23 | */ |
| ysr@777 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTZFTHREAD_HPP |
| stefank@2314 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTZFTHREAD_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "gc_implementation/shared/concurrentGCThread.hpp" |
| stefank@2314 | 29 | |
| ysr@777 | 30 | // The Concurrent ZF Thread. Performs concurrent zero-filling. |
| ysr@777 | 31 | |
| ysr@777 | 32 | class ConcurrentZFThread: public ConcurrentGCThread { |
| ysr@777 | 33 | friend class VMStructs; |
| ysr@777 | 34 | friend class ZeroFillRegionClosure; |
| ysr@777 | 35 | |
| ysr@777 | 36 | private: |
| ysr@777 | 37 | |
| ysr@777 | 38 | // Zero fill the heap region. |
| ysr@777 | 39 | void processHeapRegion(HeapRegion* r); |
| ysr@777 | 40 | |
| ysr@777 | 41 | // Stats |
| ysr@777 | 42 | // Allocation (protected by heap lock). |
| ysr@777 | 43 | static int _region_allocs; // Number of regions allocated |
| ysr@777 | 44 | static int _sync_zfs; // Synchronous zero-fills + |
| ysr@777 | 45 | static int _zf_waits; // Wait for conc zero-fill completion. |
| ysr@777 | 46 | |
| ysr@777 | 47 | // Number of regions CFZ thread fills. |
| ysr@777 | 48 | static int _regions_filled; |
| ysr@777 | 49 | |
| ysr@777 | 50 | double _vtime_start; // Initial virtual time. |
| ysr@777 | 51 | |
| ysr@777 | 52 | // These are static because the "print_summary_info" method is, and |
| ysr@777 | 53 | // it currently assumes there is only one ZF thread. We'll change when |
| ysr@777 | 54 | // we need to. |
| ysr@777 | 55 | static double _vtime_accum; // Initial virtual time. |
| ysr@777 | 56 | static double vtime_accum() { return _vtime_accum; } |
| ysr@777 | 57 | |
| ysr@777 | 58 | // Offer yield for GC. Returns true if yield occurred. |
| ysr@777 | 59 | bool offer_yield(); |
| ysr@777 | 60 | |
| ysr@777 | 61 | public: |
| ysr@777 | 62 | // Constructor |
| ysr@777 | 63 | ConcurrentZFThread(); |
| ysr@777 | 64 | |
| ysr@777 | 65 | // Main loop. |
| ysr@777 | 66 | virtual void run(); |
| ysr@777 | 67 | |
| ysr@777 | 68 | // Printing |
| tonyp@1454 | 69 | void print_on(outputStream* st) const; |
| tonyp@1454 | 70 | void print() const; |
| ysr@777 | 71 | |
| ysr@777 | 72 | // Waits until "r" has been zero-filled. Requires caller to hold the |
| ysr@777 | 73 | // ZF_mon. |
| ysr@777 | 74 | static void wait_for_ZF_completed(HeapRegion* r); |
| ysr@777 | 75 | |
| ysr@777 | 76 | // Get or clear the current unclean region. Should be done |
| ysr@777 | 77 | // while holding the ZF_needed_mon lock. |
| ysr@777 | 78 | |
| ysr@777 | 79 | // shutdown |
| iveresov@1229 | 80 | void stop(); |
| ysr@777 | 81 | |
| ysr@777 | 82 | // Stats |
| ysr@777 | 83 | static void note_region_alloc() {_region_allocs++; } |
| ysr@777 | 84 | static void note_sync_zfs() { _sync_zfs++; } |
| ysr@777 | 85 | static void note_zf_wait() { _zf_waits++; } |
| ysr@777 | 86 | static void note_region_filled() { _regions_filled++; } |
| ysr@777 | 87 | |
| ysr@777 | 88 | static void print_summary_info(); |
| ysr@777 | 89 | }; |
| stefank@2314 | 90 | |
| stefank@2314 | 91 | #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTZFTHREAD_HPP |
