Mercurial > hg > graal-compiler
annotate src/os_cpu/linux_x86/vm/thread_linux_x86.cpp @ 10405:f2110083203d
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 | f34d701e952e |
| children | 774e1c2f8741 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 10405 | 2 * Copyright (c) 2003, 2013, 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 #include "precompiled.hpp" |
| 26 #include "runtime/frame.inline.hpp" | |
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27 #include "runtime/thread.inline.hpp" |
| 0 | 28 |
| 29 // For Forte Analyzer AsyncGetCallTrace profiling support - thread is | |
| 30 // currently interrupted by SIGPROF | |
| 31 bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, | |
| 32 void* ucontext, bool isInJava) { | |
| 33 | |
| 34 assert(Thread::current() == this, "caller must be current thread"); | |
| 10405 | 35 return pd_get_top_frame(fr_addr, ucontext, isInJava); |
| 36 } | |
| 37 | |
| 38 bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava) { | |
| 39 return pd_get_top_frame(fr_addr, ucontext, isInJava); | |
| 40 } | |
| 41 | |
| 42 bool JavaThread::pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava) { | |
| 0 | 43 assert(this->is_Java_thread(), "must be JavaThread"); |
| 44 JavaThread* jt = (JavaThread *)this; | |
| 45 | |
| 46 // If we have a last_Java_frame, then we should use it even if | |
| 47 // isInJava == true. It should be more reliable than ucontext info. | |
| 48 if (jt->has_last_Java_frame()) { | |
| 49 *fr_addr = jt->pd_last_frame(); | |
| 50 return true; | |
| 51 } | |
| 52 | |
| 53 // At this point, we don't have a last_Java_frame, so | |
| 54 // we try to glean some information out of the ucontext | |
| 55 // if we were running Java code when SIGPROF came in. | |
| 56 if (isInJava) { | |
| 57 ucontext_t* uc = (ucontext_t*) ucontext; | |
| 58 | |
| 59 intptr_t* ret_fp; | |
| 60 intptr_t* ret_sp; | |
| 61 ExtendedPC addr = os::Linux::fetch_frame_from_ucontext(this, uc, | |
| 62 &ret_sp, &ret_fp); | |
| 63 if (addr.pc() == NULL || ret_sp == NULL ) { | |
| 64 // ucontext wasn't useful | |
| 65 return false; | |
| 66 } | |
| 67 | |
| 68 frame ret_frame(ret_sp, ret_fp, addr.pc()); | |
| 69 if (!ret_frame.safe_for_sender(jt)) { | |
| 70 #ifdef COMPILER2 | |
| 71 // C2 uses ebp as a general register see if NULL fp helps | |
| 72 frame ret_frame2(ret_sp, NULL, addr.pc()); | |
| 73 if (!ret_frame2.safe_for_sender(jt)) { | |
| 74 // nothing else to try if the frame isn't good | |
| 75 return false; | |
| 76 } | |
| 77 ret_frame = ret_frame2; | |
| 78 #else | |
| 79 // nothing else to try if the frame isn't good | |
| 80 return false; | |
| 81 #endif /* COMPILER2 */ | |
| 82 } | |
| 83 *fr_addr = ret_frame; | |
| 84 return true; | |
| 85 } | |
| 86 | |
| 87 // nothing else to try | |
| 88 return false; | |
| 89 } | |
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90 |
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91 void JavaThread::cache_global_variables() { } |
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92 |