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221d0f4c54
Remove frame.inline.hpp,etc from header files and adjust transitive includes. Reviewed-by: stefank, stuefe
126 lines
4.6 KiB
C++
126 lines
4.6 KiB
C++
/*
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* Copyright (c) 2003, 2018, Oracle and/or its affiliates. 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 "memory/metaspaceShared.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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assert(_anchor.walkable(), "thread has not dumped its register windows yet");
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assert(_anchor.last_Java_pc() != NULL, "Ack no pc!");
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return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc());
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}
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// For Forte Analyzer AsyncGetCallTrace profiling support - thread is
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// currently interrupted by SIGPROF
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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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assert(Thread::current() == this, "caller must be current thread");
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assert(this->is_Java_thread(), "must be JavaThread");
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JavaThread* jt = (JavaThread *)this;
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if (!isInJava) {
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// make_walkable flushes register windows and grabs last_Java_pc
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// which can not be done if the ucontext sp matches last_Java_sp
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// stack walking utilities assume last_Java_pc set if marked flushed
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jt->frame_anchor()->make_walkable(jt);
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}
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// If we have a walkable last_Java_frame, then we should use it
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// even if isInJava == true. It should be more reliable than
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// ucontext info.
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if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) {
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*fr_addr = jt->pd_last_frame();
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return true;
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}
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ucontext_t* uc = (ucontext_t*) ucontext;
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// At this point, we don't have a walkable last_Java_frame, so
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// we try to glean some information out of the ucontext.
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intptr_t* ret_sp;
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ExtendedPC addr =
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os::fetch_frame_from_context(uc, &ret_sp,
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NULL /* ret_fp only used on X86 */);
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if (addr.pc() == NULL || ret_sp == NULL) {
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// ucontext wasn't useful
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return false;
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}
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if (MetaspaceShared::is_in_trampoline_frame(addr.pc())) {
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// In the middle of a trampoline call. Bail out for safety.
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// This happens rarely so shouldn't affect profiling.
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return false;
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}
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// we were running Java code when SIGPROF came in
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if (isInJava) {
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// If we have a last_Java_sp, then the SIGPROF signal caught us
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// right when we were transitioning from _thread_in_Java to a new
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// JavaThreadState. We use last_Java_sp instead of the sp from
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// the ucontext since it should be more reliable.
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if (jt->has_last_Java_frame()) {
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ret_sp = jt->last_Java_sp();
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}
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// Implied else: we don't have a last_Java_sp so we use what we
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// got from the ucontext.
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frame ret_frame(ret_sp, frame::unpatchable, addr.pc());
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if (!ret_frame.safe_for_sender(jt)) {
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// nothing else to try if the frame isn't good
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return false;
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}
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*fr_addr = ret_frame;
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return true;
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}
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// At this point, we know we weren't running Java code. We might
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// have a last_Java_sp, but we don't have a walkable frame.
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// However, we might still be able to construct something useful
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// if the thread was running native code.
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if (jt->has_last_Java_frame()) {
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assert(!jt->frame_anchor()->walkable(), "case covered above");
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if (jt->thread_state() == _thread_in_native) {
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frame ret_frame(jt->last_Java_sp(), frame::unpatchable, addr.pc());
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if (!ret_frame.safe_for_sender(jt)) {
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// nothing else to try if the frame isn't good
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return false;
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}
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*fr_addr = ret_frame;
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return true;
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}
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}
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// nothing else to try
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return false;
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}
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void JavaThread::cache_global_variables() { }
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