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annotate src/os_cpu/solaris_x86/vm/thread_solaris_x86.cpp @ 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
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1 /*
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "runtime/frame.inline.hpp"
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27 #include "runtime/thread.inline.hpp"
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29 // For Forte Analyzer AsyncGetCallTrace profiling support - thread is
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30 // currently interrupted by SIGPROF
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31 bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
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32 void* ucontext, bool isInJava) {
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33 assert(Thread::current() == this, "caller must be current thread");
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34 return pd_get_top_frame(fr_addr, ucontext, isInJava);
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35 }
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36
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37 bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr,
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38 void* ucontext, bool isInJava) {
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39 return pd_get_top_frame(fr_addr, ucontext, isInJava);
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40 }
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41
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42 bool JavaThread::pd_get_top_frame(frame* fr_addr,
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43 void* ucontext, bool isInJava) {
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44 assert(this->is_Java_thread(), "must be JavaThread");
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45 JavaThread* jt = (JavaThread *)this;
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46
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47 // last_Java_frame is always walkable and safe use it if we have it
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48
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49 if (jt->has_last_Java_frame()) {
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50 *fr_addr = jt->pd_last_frame();
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51 return true;
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52 }
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53
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54 ucontext_t* uc = (ucontext_t*) ucontext;
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56 // We always want to use the initial frame we create from the ucontext as
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57 // it certainly signals where we currently are. However that frame may not
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58 // be safe for calling sender. In that case if we have a last_Java_frame
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59 // then the forte walker will switch to that frame as the virtual sender
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60 // for the frame we create here which is not sender safe.
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61
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62 intptr_t* ret_fp;
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63 intptr_t* ret_sp;
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64 ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc, &ret_sp, &ret_fp);
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66 // Something would really have to be screwed up to get a NULL pc
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68 if (addr.pc() == NULL ) {
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69 assert(false, "NULL pc from signal handler!");
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70 return false;
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71
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72 }
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74 // If sp and fp are nonsense just leave them out
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76 if ((address)ret_sp >= jt->stack_base() ||
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77 (address)ret_sp < jt->stack_base() - jt->stack_size() ) {
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79 ret_sp = NULL;
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80 ret_fp = NULL;
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81 } else {
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83 // sp is reasonable is fp reasonable?
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84 if ( (address)ret_fp >= jt->stack_base() || ret_fp < ret_sp) {
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85 ret_fp = NULL;
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86 }
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87 }
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89 frame ret_frame(ret_sp, ret_fp, addr.pc());
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90
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91 *fr_addr = ret_frame;
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92 return true;
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93
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94 }
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96 void JavaThread::cache_global_variables() { }
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97