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annotate src/share/vm/prims/jvmtiUtil.hpp @ 20465:7301840ea20e
8023461: Thread holding lock at safepoint that vm can block on: MethodCompileQueue_lock
Reviewed-by: kvn, iveresov
| author | vlivanov |
|---|---|
| date | Tue, 11 Mar 2014 15:06:34 +0400 |
| parents | f95d63e2154a |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_PRIMS_JVMTIUTIL_HPP |
| 26 #define SHARE_VM_PRIMS_JVMTIUTIL_HPP | |
| 27 | |
| 28 #include "jvmtifiles/jvmti.h" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "prims/jvmtiEventController.hpp" | |
| 31 | |
| 0 | 32 /////////////////////////////////////////////////////////////// |
| 33 // | |
| 34 // class JvmtiUtil | |
| 35 // | |
| 36 // class for miscellaneous jvmti utility static methods | |
| 37 // | |
| 38 | |
| 39 class JvmtiUtil : AllStatic { | |
| 40 | |
| 41 static ResourceArea* _single_threaded_resource_area; | |
| 42 | |
| 43 static const char* _error_names[]; | |
| 44 static const bool _event_threaded[]; | |
| 45 | |
| 46 public: | |
| 47 | |
| 48 static ResourceArea* single_threaded_resource_area(); | |
| 49 | |
| 50 static const char* error_name(int num) { return _error_names[num]; } // To Do: add range checking | |
| 51 | |
| 52 static const bool has_event_capability(jvmtiEvent event_type, const jvmtiCapabilities* capabilities_ptr); | |
| 53 | |
| 54 static const bool event_threaded(int num) { | |
| 55 if (num >= JVMTI_MIN_EVENT_TYPE_VAL && num <= JVMTI_MAX_EVENT_TYPE_VAL) { | |
| 56 return _event_threaded[num]; | |
| 57 } | |
| 58 if (num >= EXT_MIN_EVENT_TYPE_VAL && num <= EXT_MAX_EVENT_TYPE_VAL) { | |
| 59 return false; | |
| 60 } | |
| 61 ShouldNotReachHere(); | |
| 62 return false; | |
| 63 } | |
| 64 }; | |
| 65 | |
| 66 | |
| 67 /////////////////////////////////////////////////////////////// | |
| 68 // | |
| 69 // class SafeResourceMark | |
| 70 // | |
| 71 // ResourceMarks that work before threads exist | |
| 72 // | |
| 73 | |
| 74 class SafeResourceMark : public ResourceMark { | |
| 75 | |
| 76 ResourceArea* safe_resource_area() { | |
| 77 Thread* thread; | |
| 78 | |
| 79 if (Threads::number_of_threads() == 0) { | |
| 80 return JvmtiUtil::single_threaded_resource_area(); | |
| 81 } | |
| 82 thread = ThreadLocalStorage::thread(); | |
| 83 if (thread == NULL) { | |
| 84 return JvmtiUtil::single_threaded_resource_area(); | |
| 85 } | |
| 86 return thread->resource_area(); | |
| 87 } | |
| 88 | |
| 89 public: | |
| 90 | |
| 91 SafeResourceMark() : ResourceMark(safe_resource_area()) {} | |
| 92 | |
| 93 }; | |
| 1972 | 94 |
| 95 #endif // SHARE_VM_PRIMS_JVMTIUTIL_HPP |