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comparison src/os/linux/vm/osThread_linux.hpp @ 10405:f2110083203d

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8005849: JEP 167: Event-Based JVM Tracing Reviewed-by: acorn, coleenp, sla Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author sla
date Mon, 10 Jun 2013 11:30:51 +0200
parents 960a442eae91
children
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10404:d0add7016434 10405:f2110083203d
1 /* 1 /*
2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
75 75
76 public: 76 public:
77 // flags that support signal based suspend/resume on Linux are in a 77 // flags that support signal based suspend/resume on Linux are in a
78 // separate class to avoid confusion with many flags in OSThread that 78 // separate class to avoid confusion with many flags in OSThread that
79 // are used by VM level suspend/resume. 79 // are used by VM level suspend/resume.
80 os::Linux::SuspendResume sr; 80 os::SuspendResume sr;
81 81
82 // _ucontext and _siginfo are used by SR_handler() to save thread context, 82 // _ucontext and _siginfo are used by SR_handler() to save thread context,
83 // and they will later be used to walk the stack or reposition thread PC. 83 // and they will later be used to walk the stack or reposition thread PC.
84 // If the thread is not suspended in SR_handler() (e.g. self suspend), 84 // If the thread is not suspended in SR_handler() (e.g. self suspend),
85 // the value in _ucontext is meaningless, so we must use the last Java 85 // the value in _ucontext is meaningless, so we must use the last Java