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src/share/vm/prims/jvmtiUtil.hpp@eef07cd490d4 (annotated)
src/share/vm/prims/jvmtiUtil.hpp
Wed, 03 Jul 2019 20:42:37 +0800
- author
- aoqi
- date
- Wed, 03 Jul 2019 20:42:37 +0800
- changeset 9637
- eef07cd490d4
- parent 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
Merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_PRIMS_JVMTIUTIL_HPP |
| aoqi@0 | 26 | #define SHARE_VM_PRIMS_JVMTIUTIL_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "jvmtifiles/jvmti.h" |
| aoqi@0 | 29 | #include "memory/resourceArea.hpp" |
| aoqi@0 | 30 | #include "prims/jvmtiEventController.hpp" |
| aoqi@0 | 31 | |
| aoqi@0 | 32 | /////////////////////////////////////////////////////////////// |
| aoqi@0 | 33 | // |
| aoqi@0 | 34 | // class JvmtiUtil |
| aoqi@0 | 35 | // |
| aoqi@0 | 36 | // class for miscellaneous jvmti utility static methods |
| aoqi@0 | 37 | // |
| aoqi@0 | 38 | |
| aoqi@0 | 39 | class JvmtiUtil : AllStatic { |
| aoqi@0 | 40 | |
| aoqi@0 | 41 | static ResourceArea* _single_threaded_resource_area; |
| aoqi@0 | 42 | |
| aoqi@0 | 43 | static const char* _error_names[]; |
| aoqi@0 | 44 | static const bool _event_threaded[]; |
| aoqi@0 | 45 | |
| aoqi@0 | 46 | public: |
| aoqi@0 | 47 | |
| aoqi@0 | 48 | static ResourceArea* single_threaded_resource_area(); |
| aoqi@0 | 49 | |
| aoqi@0 | 50 | static const char* error_name(int num) { return _error_names[num]; } // To Do: add range checking |
| aoqi@0 | 51 | |
| aoqi@0 | 52 | static const bool has_event_capability(jvmtiEvent event_type, const jvmtiCapabilities* capabilities_ptr); |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | static const bool event_threaded(int num) { |
| aoqi@0 | 55 | if (num >= JVMTI_MIN_EVENT_TYPE_VAL && num <= JVMTI_MAX_EVENT_TYPE_VAL) { |
| aoqi@0 | 56 | return _event_threaded[num]; |
| aoqi@0 | 57 | } |
| aoqi@0 | 58 | if (num >= EXT_MIN_EVENT_TYPE_VAL && num <= EXT_MAX_EVENT_TYPE_VAL) { |
| aoqi@0 | 59 | return false; |
| aoqi@0 | 60 | } |
| aoqi@0 | 61 | ShouldNotReachHere(); |
| aoqi@0 | 62 | return false; |
| aoqi@0 | 63 | } |
| aoqi@0 | 64 | }; |
| aoqi@0 | 65 | |
| aoqi@0 | 66 | |
| aoqi@0 | 67 | /////////////////////////////////////////////////////////////// |
| aoqi@0 | 68 | // |
| aoqi@0 | 69 | // class SafeResourceMark |
| aoqi@0 | 70 | // |
| aoqi@0 | 71 | // ResourceMarks that work before threads exist |
| aoqi@0 | 72 | // |
| aoqi@0 | 73 | |
| aoqi@0 | 74 | class SafeResourceMark : public ResourceMark { |
| aoqi@0 | 75 | |
| aoqi@0 | 76 | ResourceArea* safe_resource_area() { |
| aoqi@0 | 77 | Thread* thread; |
| aoqi@0 | 78 | |
| aoqi@0 | 79 | if (Threads::number_of_threads() == 0) { |
| aoqi@0 | 80 | return JvmtiUtil::single_threaded_resource_area(); |
| aoqi@0 | 81 | } |
| aoqi@0 | 82 | thread = ThreadLocalStorage::thread(); |
| aoqi@0 | 83 | if (thread == NULL) { |
| aoqi@0 | 84 | return JvmtiUtil::single_threaded_resource_area(); |
| aoqi@0 | 85 | } |
| aoqi@0 | 86 | return thread->resource_area(); |
| aoqi@0 | 87 | } |
| aoqi@0 | 88 | |
| aoqi@0 | 89 | public: |
| aoqi@0 | 90 | |
| aoqi@0 | 91 | SafeResourceMark() : ResourceMark(safe_resource_area()) {} |
| aoqi@0 | 92 | |
| aoqi@0 | 93 | }; |
| aoqi@0 | 94 | |
| aoqi@0 | 95 | #endif // SHARE_VM_PRIMS_JVMTIUTIL_HPP |
