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75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
/*
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* Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2009, 2021, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "runtime/frame.inline.hpp"
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#include "runtime/thread.inline.hpp"
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frame JavaThread::pd_last_frame() {
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assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
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return frame(last_Java_fp(), last_Java_sp());
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}
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void JavaThread::cache_global_variables() {
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// nothing to do
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}
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bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
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void* ucontext,
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bool isInJava) {
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if (has_last_Java_frame()) {
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*fr_addr = pd_last_frame();
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return true;
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}
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if (isInJava) {
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// We know we are in Java, but there is no frame?
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// Try to find the top-most Java frame on Zero stack then.
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intptr_t* sp = zero_stack()->sp();
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ZeroFrame* zf = top_zero_frame();
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while (zf != NULL) {
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if (zf->is_interpreter_frame()) {
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interpreterState istate = zf->as_interpreter_frame()->interpreter_state();
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if (istate->self_link() == istate) {
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// Valid interpreter state found, this is our frame.
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*fr_addr = frame(zf, sp);
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return true;
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}
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}
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sp = ((intptr_t *) zf) + 1;
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zf = zf->next();
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}
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}
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// No dice.
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return false;
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}
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bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr,
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void* ucontext,
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bool isInJava) {
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return pd_get_top_frame_for_signal_handler(fr_addr, ucontext, isInJava);
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}
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