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55 lines
2.0 KiB
C++
55 lines
2.0 KiB
C++
/*
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* Copyright (c) 2017, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef OS_WINDOWS_THREADCRASHPROTECTION_WINDOWS_HPP
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#define OS_WINDOWS_THREADCRASHPROTECTION_WINDOWS_HPP
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#include "memory/allocation.hpp"
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class CrashProtectionCallback;
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class Thread;
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/*
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* Crash protection for the JfrSampler thread. Wrap the callback
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* with a __try { call() }
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* To be able to use this - don't take locks, don't rely on destructors,
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* don't make OS library calls, don't allocate memory, don't print,
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* don't call code that could leave the heap / memory in an inconsistent state,
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* or anything else where we are not in control if we suddenly jump out.
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*/
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class ThreadCrashProtection : public StackObj {
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public:
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static bool is_crash_protected(Thread* thr) {
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return _crash_protection != nullptr && _protected_thread == thr;
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}
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ThreadCrashProtection();
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bool call(CrashProtectionCallback& cb);
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private:
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static Thread* _protected_thread;
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static ThreadCrashProtection* _crash_protection;
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};
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#endif // OS_WINDOWS_THREADCRASHPROTECTION_WINDOWS_HPP
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