| /* |
| * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "memory/metaspaceShared.hpp" |
| #include "runtime/frame.inline.hpp" |
| #include "runtime/thread.inline.hpp" |
| |
| // For Forte Analyzer AsyncGetCallTrace profiling support - thread is |
| // currently interrupted by SIGPROF |
| bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, |
| void* ucontext, bool isInJava) { |
| assert(Thread::current() == this, "caller must be current thread"); |
| return pd_get_top_frame(fr_addr, ucontext, isInJava); |
| } |
| |
| bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr, |
| void* ucontext, bool isInJava) { |
| return pd_get_top_frame(fr_addr, ucontext, isInJava); |
| } |
| |
| bool JavaThread::pd_get_top_frame(frame* fr_addr, |
| void* ucontext, bool isInJava) { |
| assert(this->is_Java_thread(), "must be JavaThread"); |
| JavaThread* jt = (JavaThread *)this; |
| |
| // There is small window where last_Java_frame is not walkable or safe |
| if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) { |
| *fr_addr = jt->pd_last_frame(); |
| return true; |
| } |
| |
| ucontext_t* uc = (ucontext_t*) ucontext; |
| |
| // We always want to use the initial frame we create from the ucontext as |
| // it certainly signals where we currently are. However that frame may not |
| // be safe for calling sender. In that case if we have a last_Java_frame |
| // then the forte walker will switch to that frame as the virtual sender |
| // for the frame we create here which is not sender safe. |
| |
| intptr_t* ret_fp; |
| intptr_t* ret_sp; |
| ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc, &ret_sp, &ret_fp); |
| |
| // Something would really have to be screwed up to get a NULL pc |
| |
| if (addr.pc() == NULL) { |
| assert(false, "NULL pc from signal handler!"); |
| return false; |
| } |
| |
| if (MetaspaceShared::is_in_trampoline_frame(addr.pc())) { |
| // In the middle of a trampoline call. Bail out for safety. |
| // This happens rarely so shouldn't affect profiling. |
| return false; |
| } |
| |
| // If sp and fp are nonsense just leave them out |
| |
| if (!jt->on_local_stack((address)ret_sp)) { |
| ret_sp = NULL; |
| ret_fp = NULL; |
| } else { |
| // sp is reasonable is fp reasonable? |
| if ((address)ret_fp >= jt->stack_base() || ret_fp < ret_sp) { |
| ret_fp = NULL; |
| } |
| } |
| |
| frame ret_frame(ret_sp, ret_fp, addr.pc()); |
| |
| *fr_addr = ret_frame; |
| return true; |
| |
| } |
| |
| void JavaThread::cache_global_variables() { } |
| |