Andrew Haley | 50c0c29 | 2015-01-15 11:17:47 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 3 | * Copyright (c) 2014, Red Hat Inc. All rights reserved. |
| 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 5 | * |
| 6 | * This code is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License version 2 only, as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| 14 | * accompanied this code). |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License version |
| 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 21 | * or visit www.oracle.com if you need additional information or have any |
| 22 | * questions. |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | #include "precompiled.hpp" |
Calvin Cheung | 28edd79 | 2016-04-07 22:03:04 -0700 | [diff] [blame] | 27 | #include "memory/metaspaceShared.hpp" |
Andrew Haley | 50c0c29 | 2015-01-15 11:17:47 -0800 | [diff] [blame] | 28 | #include "runtime/frame.inline.hpp" |
| 29 | #include "runtime/thread.inline.hpp" |
| 30 | |
| 31 | // For Forte Analyzer AsyncGetCallTrace profiling support - thread is |
| 32 | // currently interrupted by SIGPROF |
| 33 | bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, |
| 34 | void* ucontext, bool isInJava) { |
| 35 | |
| 36 | assert(Thread::current() == this, "caller must be current thread"); |
| 37 | return pd_get_top_frame(fr_addr, ucontext, isInJava); |
| 38 | } |
| 39 | |
| 40 | bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava) { |
| 41 | return pd_get_top_frame(fr_addr, ucontext, isInJava); |
| 42 | } |
| 43 | |
| 44 | bool JavaThread::pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava) { |
| 45 | assert(this->is_Java_thread(), "must be JavaThread"); |
| 46 | JavaThread* jt = (JavaThread *)this; |
| 47 | |
| 48 | // If we have a last_Java_frame, then we should use it even if |
| 49 | // isInJava == true. It should be more reliable than ucontext info. |
| 50 | if (jt->has_last_Java_frame()) { |
| 51 | *fr_addr = jt->pd_last_frame(); |
| 52 | return true; |
| 53 | } |
| 54 | |
| 55 | // At this point, we don't have a last_Java_frame, so |
| 56 | // we try to glean some information out of the ucontext |
| 57 | // if we were running Java code when SIGPROF came in. |
| 58 | if (isInJava) { |
| 59 | ucontext_t* uc = (ucontext_t*) ucontext; |
| 60 | |
| 61 | intptr_t* ret_fp; |
| 62 | intptr_t* ret_sp; |
| 63 | ExtendedPC addr = os::Linux::fetch_frame_from_ucontext(this, uc, |
| 64 | &ret_sp, &ret_fp); |
| 65 | if (addr.pc() == NULL || ret_sp == NULL ) { |
| 66 | // ucontext wasn't useful |
| 67 | return false; |
| 68 | } |
| 69 | |
Calvin Cheung | 28edd79 | 2016-04-07 22:03:04 -0700 | [diff] [blame] | 70 | #if INCLUDE_CDS |
| 71 | if (UseSharedSpaces && MetaspaceShared::is_in_shared_region(addr.pc(), MetaspaceShared::md)) { |
| 72 | // In the middle of a trampoline call. Bail out for safety. |
| 73 | // This happens rarely so shouldn't affect profiling. |
| 74 | return false; |
| 75 | } |
| 76 | #endif |
| 77 | |
Andrew Haley | 50c0c29 | 2015-01-15 11:17:47 -0800 | [diff] [blame] | 78 | frame ret_frame(ret_sp, ret_fp, addr.pc()); |
| 79 | if (!ret_frame.safe_for_sender(jt)) { |
| 80 | #ifdef COMPILER2 |
| 81 | frame ret_frame2(ret_sp, NULL, addr.pc()); |
| 82 | if (!ret_frame2.safe_for_sender(jt)) { |
| 83 | // nothing else to try if the frame isn't good |
| 84 | return false; |
| 85 | } |
| 86 | ret_frame = ret_frame2; |
| 87 | #else |
| 88 | // nothing else to try if the frame isn't good |
| 89 | return false; |
| 90 | #endif /* COMPILER2 */ |
| 91 | } |
| 92 | *fr_addr = ret_frame; |
| 93 | return true; |
| 94 | } |
| 95 | |
| 96 | // nothing else to try |
| 97 | return false; |
| 98 | } |
| 99 | |
| 100 | void JavaThread::cache_global_variables() { } |
| 101 | |