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annotate src/share/vm/gc_implementation/g1/concurrentZFThread.hpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 342 | 1 /* |
| 1972 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
| 342 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 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 | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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c18cbe5936b8
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21 * questions. |
| 342 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTZFTHREAD_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTZFTHREAD_HPP | |
| 27 | |
| 28 #include "gc_implementation/shared/concurrentGCThread.hpp" | |
| 29 | |
| 342 | 30 // The Concurrent ZF Thread. Performs concurrent zero-filling. |
| 31 | |
| 32 class ConcurrentZFThread: public ConcurrentGCThread { | |
| 33 friend class VMStructs; | |
| 34 friend class ZeroFillRegionClosure; | |
| 35 | |
| 36 private: | |
| 37 | |
| 38 // Zero fill the heap region. | |
| 39 void processHeapRegion(HeapRegion* r); | |
| 40 | |
| 41 // Stats | |
| 42 // Allocation (protected by heap lock). | |
| 43 static int _region_allocs; // Number of regions allocated | |
| 44 static int _sync_zfs; // Synchronous zero-fills + | |
| 45 static int _zf_waits; // Wait for conc zero-fill completion. | |
| 46 | |
| 47 // Number of regions CFZ thread fills. | |
| 48 static int _regions_filled; | |
| 49 | |
| 50 double _vtime_start; // Initial virtual time. | |
| 51 | |
| 52 // These are static because the "print_summary_info" method is, and | |
| 53 // it currently assumes there is only one ZF thread. We'll change when | |
| 54 // we need to. | |
| 55 static double _vtime_accum; // Initial virtual time. | |
| 56 static double vtime_accum() { return _vtime_accum; } | |
| 57 | |
| 58 // Offer yield for GC. Returns true if yield occurred. | |
| 59 bool offer_yield(); | |
| 60 | |
| 61 public: | |
| 62 // Constructor | |
| 63 ConcurrentZFThread(); | |
| 64 | |
| 65 // Main loop. | |
| 66 virtual void run(); | |
| 67 | |
| 68 // Printing | |
| 1019 | 69 void print_on(outputStream* st) const; |
| 70 void print() const; | |
| 342 | 71 |
| 72 // Waits until "r" has been zero-filled. Requires caller to hold the | |
| 73 // ZF_mon. | |
| 74 static void wait_for_ZF_completed(HeapRegion* r); | |
| 75 | |
| 76 // Get or clear the current unclean region. Should be done | |
| 77 // while holding the ZF_needed_mon lock. | |
| 78 | |
| 79 // shutdown | |
| 794 | 80 void stop(); |
| 342 | 81 |
| 82 // Stats | |
| 83 static void note_region_alloc() {_region_allocs++; } | |
| 84 static void note_sync_zfs() { _sync_zfs++; } | |
| 85 static void note_zf_wait() { _zf_waits++; } | |
| 86 static void note_region_filled() { _regions_filled++; } | |
| 87 | |
| 88 static void print_summary_info(); | |
| 89 }; | |
| 1972 | 90 |
| 91 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTZFTHREAD_HPP |