| /* |
| * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_PRIMS_JVMTIUTIL_HPP |
| #define SHARE_VM_PRIMS_JVMTIUTIL_HPP |
| |
| #include "jvmtifiles/jvmti.h" |
| #include "memory/resourceArea.hpp" |
| #include "prims/jvmtiEventController.hpp" |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // class JvmtiUtil |
| // |
| // class for miscellaneous jvmti utility static methods |
| // |
| |
| class JvmtiUtil : AllStatic { |
| |
| static ResourceArea* _single_threaded_resource_area; |
| |
| static const char* _error_names[]; |
| static const bool _event_threaded[]; |
| |
| public: |
| |
| static ResourceArea* single_threaded_resource_area(); |
| |
| static const char* error_name(int num) { return _error_names[num]; } // To Do: add range checking |
| |
| static const bool has_event_capability(jvmtiEvent event_type, const jvmtiCapabilities* capabilities_ptr); |
| |
| static const bool event_threaded(int num) { |
| if (num >= JVMTI_MIN_EVENT_TYPE_VAL && num <= JVMTI_MAX_EVENT_TYPE_VAL) { |
| return _event_threaded[num]; |
| } |
| if (num >= EXT_MIN_EVENT_TYPE_VAL && num <= EXT_MAX_EVENT_TYPE_VAL) { |
| return false; |
| } |
| ShouldNotReachHere(); |
| return false; |
| } |
| }; |
| |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // class SafeResourceMark |
| // |
| // ResourceMarks that work before threads exist |
| // |
| |
| class SafeResourceMark : public ResourceMark { |
| |
| ResourceArea* safe_resource_area() { |
| Thread* thread; |
| |
| if (Threads::number_of_threads() == 0) { |
| return JvmtiUtil::single_threaded_resource_area(); |
| } |
| thread = Thread::current_or_null(); |
| if (thread == NULL) { |
| return JvmtiUtil::single_threaded_resource_area(); |
| } |
| return thread->resource_area(); |
| } |
| |
| public: |
| |
| SafeResourceMark() : ResourceMark(safe_resource_area()) {} |
| |
| }; |
| |
| #endif // SHARE_VM_PRIMS_JVMTIUTIL_HPP |