Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/gc_interface/gcCause.hpp@a92cdbac8b9e (annotated)
src/share/vm/gc_interface/gcCause.hpp
Mon, 26 Sep 2011 10:24:05 -0700
- author
- kvn
- date
- Mon, 26 Sep 2011 10:24:05 -0700
- changeset 3157
- a92cdbac8b9e
- parent 2532
- c798c277ddd1
- child 3456
- 9509c20bba28
- permissions
- -rw-r--r--
7081933: Use zeroing elimination optimization for large array
Summary: Don't zero new typeArray during runtime call if the allocation is followed by arraycopy into it.
Reviewed-by: twisti
| duke@435 | 1 | /* |
| brutisso@2532 | 2 | * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 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. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_GC_INTERFACE_GCCAUSE_HPP |
| stefank@2314 | 26 | #define SHARE_VM_GC_INTERFACE_GCCAUSE_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "memory/allocation.hpp" |
| stefank@2314 | 29 | |
| duke@435 | 30 | // |
| duke@435 | 31 | // This class exposes implementation details of the various |
| duke@435 | 32 | // collector(s), and we need to be very careful with it. If |
| duke@435 | 33 | // use of this class grows, we should split it into public |
| duke@435 | 34 | // and implemenation-private "causes". |
| duke@435 | 35 | // |
| duke@435 | 36 | |
| duke@435 | 37 | class GCCause : public AllStatic { |
| duke@435 | 38 | public: |
| duke@435 | 39 | enum Cause { |
| duke@435 | 40 | /* public */ |
| duke@435 | 41 | _java_lang_system_gc, |
| duke@435 | 42 | _full_gc_alot, |
| duke@435 | 43 | _scavenge_alot, |
| duke@435 | 44 | _allocation_profiler, |
| duke@435 | 45 | _jvmti_force_gc, |
| duke@435 | 46 | _gc_locker, |
| duke@435 | 47 | _heap_inspection, |
| duke@435 | 48 | _heap_dump, |
| duke@435 | 49 | |
| duke@435 | 50 | /* implementation independent, but reserved for GC use */ |
| duke@435 | 51 | _no_gc, |
| duke@435 | 52 | _no_cause_specified, |
| duke@435 | 53 | _allocation_failure, |
| duke@435 | 54 | |
| duke@435 | 55 | /* implementation specific */ |
| duke@435 | 56 | |
| duke@435 | 57 | _tenured_generation_full, |
| duke@435 | 58 | _permanent_generation_full, |
| duke@435 | 59 | |
| duke@435 | 60 | _cms_generation_full, |
| duke@435 | 61 | _cms_initial_mark, |
| duke@435 | 62 | _cms_final_remark, |
| duke@435 | 63 | |
| duke@435 | 64 | _old_generation_expanded_on_last_scavenge, |
| duke@435 | 65 | _old_generation_too_full_to_scavenge, |
| duke@435 | 66 | _adaptive_size_policy, |
| duke@435 | 67 | |
| apetrusenko@1112 | 68 | _g1_inc_collection_pause, |
| ysr@777 | 69 | |
| duke@435 | 70 | _last_ditch_collection, |
| duke@435 | 71 | _last_gc_cause |
| duke@435 | 72 | }; |
| duke@435 | 73 | |
| duke@435 | 74 | inline static bool is_user_requested_gc(GCCause::Cause cause) { |
| duke@435 | 75 | return (cause == GCCause::_java_lang_system_gc || |
| duke@435 | 76 | cause == GCCause::_jvmti_force_gc); |
| duke@435 | 77 | } |
| ysr@777 | 78 | |
| duke@435 | 79 | inline static bool is_serviceability_requested_gc(GCCause::Cause |
| duke@435 | 80 | cause) { |
| duke@435 | 81 | return (cause == GCCause::_jvmti_force_gc || |
| duke@435 | 82 | cause == GCCause::_heap_inspection || |
| duke@435 | 83 | cause == GCCause::_heap_dump); |
| duke@435 | 84 | } |
| ysr@777 | 85 | |
| duke@435 | 86 | // Return a string describing the GCCause. |
| duke@435 | 87 | static const char* to_string(GCCause::Cause cause); |
| duke@435 | 88 | }; |
| stefank@2314 | 89 | |
| stefank@2314 | 90 | #endif // SHARE_VM_GC_INTERFACE_GCCAUSE_HPP |
