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src/os_cpu/solaris_x86/vm/thread_solaris_x86.cpp@710a3c8b516e (annotated)
src/os_cpu/solaris_x86/vm/thread_solaris_x86.cpp
Tue, 08 Aug 2017 15:57:29 +0800
- author
- aoqi
- date
- Tue, 08 Aug 2017 15:57:29 +0800
- changeset 6876
- 710a3c8b516e
- parent 5237
- f2110083203d
- parent 0
- f90c822e73f8
- child 9041
- 95a08233f46c
- permissions
- -rw-r--r--
merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #include "precompiled.hpp" |
| aoqi@0 | 26 | #include "runtime/frame.inline.hpp" |
| aoqi@0 | 27 | #include "runtime/thread.inline.hpp" |
| aoqi@0 | 28 | |
| aoqi@0 | 29 | // For Forte Analyzer AsyncGetCallTrace profiling support - thread is |
| aoqi@0 | 30 | // currently interrupted by SIGPROF |
| aoqi@0 | 31 | bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, |
| aoqi@0 | 32 | void* ucontext, bool isInJava) { |
| aoqi@0 | 33 | assert(Thread::current() == this, "caller must be current thread"); |
| aoqi@0 | 34 | return pd_get_top_frame(fr_addr, ucontext, isInJava); |
| aoqi@0 | 35 | } |
| aoqi@0 | 36 | |
| aoqi@0 | 37 | bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr, |
| aoqi@0 | 38 | void* ucontext, bool isInJava) { |
| aoqi@0 | 39 | return pd_get_top_frame(fr_addr, ucontext, isInJava); |
| aoqi@0 | 40 | } |
| aoqi@0 | 41 | |
| aoqi@0 | 42 | bool JavaThread::pd_get_top_frame(frame* fr_addr, |
| aoqi@0 | 43 | void* ucontext, bool isInJava) { |
| aoqi@0 | 44 | assert(this->is_Java_thread(), "must be JavaThread"); |
| aoqi@0 | 45 | JavaThread* jt = (JavaThread *)this; |
| aoqi@0 | 46 | |
| aoqi@0 | 47 | // last_Java_frame is always walkable and safe use it if we have it |
| aoqi@0 | 48 | |
| aoqi@0 | 49 | if (jt->has_last_Java_frame()) { |
| aoqi@0 | 50 | *fr_addr = jt->pd_last_frame(); |
| aoqi@0 | 51 | return true; |
| aoqi@0 | 52 | } |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | ucontext_t* uc = (ucontext_t*) ucontext; |
| aoqi@0 | 55 | |
| aoqi@0 | 56 | // We always want to use the initial frame we create from the ucontext as |
| aoqi@0 | 57 | // it certainly signals where we currently are. However that frame may not |
| aoqi@0 | 58 | // be safe for calling sender. In that case if we have a last_Java_frame |
| aoqi@0 | 59 | // then the forte walker will switch to that frame as the virtual sender |
| aoqi@0 | 60 | // for the frame we create here which is not sender safe. |
| aoqi@0 | 61 | |
| aoqi@0 | 62 | intptr_t* ret_fp; |
| aoqi@0 | 63 | intptr_t* ret_sp; |
| aoqi@0 | 64 | ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc, &ret_sp, &ret_fp); |
| aoqi@0 | 65 | |
| aoqi@0 | 66 | // Something would really have to be screwed up to get a NULL pc |
| aoqi@0 | 67 | |
| aoqi@0 | 68 | if (addr.pc() == NULL ) { |
| aoqi@0 | 69 | assert(false, "NULL pc from signal handler!"); |
| aoqi@0 | 70 | return false; |
| aoqi@0 | 71 | |
| aoqi@0 | 72 | } |
| aoqi@0 | 73 | |
| aoqi@0 | 74 | // If sp and fp are nonsense just leave them out |
| aoqi@0 | 75 | |
| aoqi@0 | 76 | if ((address)ret_sp >= jt->stack_base() || |
| aoqi@0 | 77 | (address)ret_sp < jt->stack_base() - jt->stack_size() ) { |
| aoqi@0 | 78 | |
| aoqi@0 | 79 | ret_sp = NULL; |
| aoqi@0 | 80 | ret_fp = NULL; |
| aoqi@0 | 81 | } else { |
| aoqi@0 | 82 | |
| aoqi@0 | 83 | // sp is reasonable is fp reasonable? |
| aoqi@0 | 84 | if ( (address)ret_fp >= jt->stack_base() || ret_fp < ret_sp) { |
| aoqi@0 | 85 | ret_fp = NULL; |
| aoqi@0 | 86 | } |
| aoqi@0 | 87 | } |
| aoqi@0 | 88 | |
| aoqi@0 | 89 | frame ret_frame(ret_sp, ret_fp, addr.pc()); |
| aoqi@0 | 90 | |
| aoqi@0 | 91 | *fr_addr = ret_frame; |
| aoqi@0 | 92 | return true; |
| aoqi@0 | 93 | |
| aoqi@0 | 94 | } |
| aoqi@0 | 95 | |
| aoqi@0 | 96 | void JavaThread::cache_global_variables() { } |
| aoqi@0 | 97 |
