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src/os_cpu/bsd_x86/vm/thread_bsd_x86.cpp@9ffa0d7ed932 (annotated)

src/os_cpu/bsd_x86/vm/thread_bsd_x86.cpp

Mon, 26 Jun 2017 02:04:40 -0700

author

kevinw

date

Mon, 26 Jun 2017 02:04:40 -0700

changeset 8987

9ffa0d7ed932

parent 8877

f04097176542

child 9041

95a08233f46c

permissions

-rw-r--r--

8161598: Kitchensink fails: assert(nm->insts_contains(original_pc)) failed: original PC must be in nmethod/CompiledMethod
Reviewed-by: dlong

never@3156	1	/*
sla@5237	2	* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
never@3156	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@3156	4	*
never@3156	5	* This code is free software; you can redistribute it and/or modify it
never@3156	6	* under the terms of the GNU General Public License version 2 only, as
never@3156	7	* published by the Free Software Foundation.
never@3156	8	*
never@3156	9	* This code is distributed in the hope that it will be useful, but WITHOUT
never@3156	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@3156	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@3156	12	* version 2 for more details (a copy is included in the LICENSE file that
never@3156	13	* accompanied this code).
never@3156	14	*
never@3156	15	* You should have received a copy of the GNU General Public License version
never@3156	16	* 2 along with this work; if not, write to the Free Software Foundation,
never@3156	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@3156	18	*
never@3156	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
never@3156	20	* or visit www.oracle.com if you need additional information or have any
never@3156	21	* questions.
never@3156	22	*
never@3156	23	*/
never@3156	24
never@3156	25	#include "precompiled.hpp"
never@3156	26	#include "runtime/frame.inline.hpp"
stefank@4299	27	#include "runtime/thread.inline.hpp"
never@3156	28
never@3156	29	// For Forte Analyzer AsyncGetCallTrace profiling support - thread is
never@3156	30	// currently interrupted by SIGPROF
never@3156	31	bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
never@3156	32	void* ucontext, bool isInJava) {
sla@5237	33	assert(Thread::current() == this, "caller must be current thread");
sla@5237	34	return pd_get_top_frame(fr_addr, ucontext, isInJava);
sla@5237	35	}
never@3156	36
sla@5237	37	bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava) {
sla@5237	38	return pd_get_top_frame(fr_addr, ucontext, isInJava);
sla@5237	39	}
sla@5237	40
sla@5237	41	bool JavaThread::pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava) {
never@3156	42	assert(this->is_Java_thread(), "must be JavaThread");
never@3156	43	JavaThread* jt = (JavaThread *)this;
never@3156	44
never@3156	45	// If we have a last_Java_frame, then we should use it even if
never@3156	46	// isInJava == true. It should be more reliable than ucontext info.
kevinw@8877	47	if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) {
never@3156	48	*fr_addr = jt->pd_last_frame();
never@3156	49	return true;
never@3156	50	}
never@3156	51
never@3156	52	// At this point, we don't have a last_Java_frame, so
never@3156	53	// we try to glean some information out of the ucontext
never@3156	54	// if we were running Java code when SIGPROF came in.
never@3156	55	if (isInJava) {
never@3156	56	ucontext_t* uc = (ucontext_t*) ucontext;
never@3156	57
never@3156	58	intptr_t* ret_fp;
never@3156	59	intptr_t* ret_sp;
never@3156	60	ExtendedPC addr = os::Bsd::fetch_frame_from_ucontext(this, uc,
never@3156	61	&ret_sp, &ret_fp);
never@3156	62	if (addr.pc() == NULL || ret_sp == NULL ) {
never@3156	63	// ucontext wasn't useful
never@3156	64	return false;
never@3156	65	}
never@3156	66
never@3156	67	frame ret_frame(ret_sp, ret_fp, addr.pc());
never@3156	68	if (!ret_frame.safe_for_sender(jt)) {
never@3156	69	#ifdef COMPILER2
never@3156	70	// C2 uses ebp as a general register see if NULL fp helps
never@3156	71	frame ret_frame2(ret_sp, NULL, addr.pc());
never@3156	72	if (!ret_frame2.safe_for_sender(jt)) {
never@3156	73	// nothing else to try if the frame isn't good
never@3156	74	return false;
never@3156	75	}
never@3156	76	ret_frame = ret_frame2;
never@3156	77	#else
never@3156	78	// nothing else to try if the frame isn't good
never@3156	79	return false;
never@3156	80	#endif /* COMPILER2 */
never@3156	81	}
never@3156	82	*fr_addr = ret_frame;
never@3156	83	return true;
never@3156	84	}
never@3156	85
never@3156	86	// nothing else to try
never@3156	87	return false;
never@3156	88	}
never@3156	89
never@3156	90	void JavaThread::cache_global_variables() { }