graal-compiler: src/os_cpu/solaris_sparc/vm/thread_solaris

annotate src/os_cpu/solaris_sparc/vm/thread_solaris_sparc.cpp @ 107:93b6525e3b82

6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on Summary: Rewrite frame::safe_for_sender and friends to be safe for collector/analyzer Reviewed-by: dcubed, kvn

author	sgoldman
date	Tue, 08 Apr 2008 12:23:15 -0400
parents	a61af66fc99e
children	d1605aabd0a1

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
a61af66fc99e Initial load duke parents: diff changeset	2 * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
a61af66fc99e Initial load duke parents: diff changeset	19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
a61af66fc99e Initial load duke parents: diff changeset	20 * CA 95054 USA or visit www.sun.com if you need additional information or
a61af66fc99e Initial load duke parents: diff changeset	21 * have any questions.
a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
a61af66fc99e Initial load duke parents: diff changeset	25 #include "incls/_precompiled.incl"
a61af66fc99e Initial load duke parents: diff changeset	26 #include "incls/_thread_solaris_sparc.cpp.incl"
a61af66fc99e Initial load duke parents: diff changeset	27
a61af66fc99e Initial load duke parents: diff changeset	28 // For Forte Analyzer AsyncGetCallTrace profiling support - thread is
a61af66fc99e Initial load duke parents: diff changeset	29 // currently interrupted by SIGPROF
a61af66fc99e Initial load duke parents: diff changeset	30 //
a61af66fc99e Initial load duke parents: diff changeset	31 // NOTE: On Solaris, register windows are flushed in the signal handler
a61af66fc99e Initial load duke parents: diff changeset	32 // except for possibly the top frame.
a61af66fc99e Initial load duke parents: diff changeset	33 //
a61af66fc99e Initial load duke parents: diff changeset	34 bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
a61af66fc99e Initial load duke parents: diff changeset	35 void* ucontext, bool isInJava) {
a61af66fc99e Initial load duke parents: diff changeset	36
a61af66fc99e Initial load duke parents: diff changeset	37 assert(Thread::current() == this, "caller must be current thread");
a61af66fc99e Initial load duke parents: diff changeset	38 assert(this->is_Java_thread(), "must be JavaThread");
a61af66fc99e Initial load duke parents: diff changeset	39
a61af66fc99e Initial load duke parents: diff changeset	40 JavaThread* jt = (JavaThread *)this;
a61af66fc99e Initial load duke parents: diff changeset	41
a61af66fc99e Initial load duke parents: diff changeset	42 if (!isInJava) {
a61af66fc99e Initial load duke parents: diff changeset	43 // make_walkable flushes register windows and grabs last_Java_pc
a61af66fc99e Initial load duke parents: diff changeset	44 // which can not be done if the ucontext sp matches last_Java_sp
a61af66fc99e Initial load duke parents: diff changeset	45 // stack walking utilities assume last_Java_pc set if marked flushed
a61af66fc99e Initial load duke parents: diff changeset	46 jt->frame_anchor()->make_walkable(jt);
a61af66fc99e Initial load duke parents: diff changeset	47 }
a61af66fc99e Initial load duke parents: diff changeset	48
a61af66fc99e Initial load duke parents: diff changeset	49 // If we have a walkable last_Java_frame, then we should use it
a61af66fc99e Initial load duke parents: diff changeset	50 // even if isInJava == true. It should be more reliable than
a61af66fc99e Initial load duke parents: diff changeset	51 // ucontext info.
a61af66fc99e Initial load duke parents: diff changeset	52 if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) {
a61af66fc99e Initial load duke parents: diff changeset	53 *fr_addr = jt->pd_last_frame();
a61af66fc99e Initial load duke parents: diff changeset	54 return true;
a61af66fc99e Initial load duke parents: diff changeset	55 }
a61af66fc99e Initial load duke parents: diff changeset	56
a61af66fc99e Initial load duke parents: diff changeset	57 ucontext_t* uc = (ucontext_t*) ucontext;
a61af66fc99e Initial load duke parents: diff changeset	58
a61af66fc99e Initial load duke parents: diff changeset	59 // At this point, we don't have a walkable last_Java_frame, so
a61af66fc99e Initial load duke parents: diff changeset	60 // we try to glean some information out of the ucontext.
a61af66fc99e Initial load duke parents: diff changeset	61 intptr_t* ret_sp;
a61af66fc99e Initial load duke parents: diff changeset	62 ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc,
a61af66fc99e Initial load duke parents: diff changeset	63 &ret_sp, NULL /* ret_fp only used on Solaris X86 */);
a61af66fc99e Initial load duke parents: diff changeset	64 if (addr.pc() == NULL \|\| ret_sp == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	65 // ucontext wasn't useful
a61af66fc99e Initial load duke parents: diff changeset	66 return false;
a61af66fc99e Initial load duke parents: diff changeset	67 }
a61af66fc99e Initial load duke parents: diff changeset	68
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	69 frame ret_frame(ret_sp, frame::unpatchable, addr.pc());
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	70
0 a61af66fc99e Initial load duke parents: diff changeset	71 // we were running Java code when SIGPROF came in
a61af66fc99e Initial load duke parents: diff changeset	72 if (isInJava) {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	73
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	74
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	75 // If the frame we got is safe then it is most certainly valid
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	76 if (ret_frame.safe_for_sender(jt)) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	77 *fr_addr = ret_frame;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	78 return true;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	79 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	80
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	81 // If it isn't safe then we can try several things to try and get
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	82 // a good starting point.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	83 //
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	84 // On sparc the frames are almost certainly walkable in the sense
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	85 // of sp/fp linkages. However because of recycling of windows if
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	86 // a piece of code does multiple save's where the initial save creates
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	87 // a real frame with a return pc and the succeeding save's are used to
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	88 // simply get free registers and have no real pc then the pc linkage on these
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	89 // "inner" temporary frames will be bogus.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	90 // Since there is in general only a nesting level like
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	91 // this one deep in general we'll try and unwind such an "inner" frame
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	92 // here ourselves and see if it makes sense
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	93
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	94 frame unwind_frame(ret_frame.fp(), frame::unpatchable, addr.pc());
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	95
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	96 if (unwind_frame.safe_for_sender(jt)) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	97 *fr_addr = unwind_frame;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	98 return true;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	99 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	100
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	101 // Well that didn't work. Most likely we're toast on this tick
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	102 // The previous code would try this. I think it is dubious in light
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	103 // of changes to safe_for_sender and the unwind trick above but
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	104 // if it gets us a safe frame who wants to argue.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	105
0 a61af66fc99e Initial load duke parents: diff changeset	106 // If we have a last_Java_sp, then the SIGPROF signal caught us
a61af66fc99e Initial load duke parents: diff changeset	107 // right when we were transitioning from _thread_in_Java to a new
a61af66fc99e Initial load duke parents: diff changeset	108 // JavaThreadState. We use last_Java_sp instead of the sp from
a61af66fc99e Initial load duke parents: diff changeset	109 // the ucontext since it should be more reliable.
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	110
0 a61af66fc99e Initial load duke parents: diff changeset	111 if (jt->has_last_Java_frame()) {
a61af66fc99e Initial load duke parents: diff changeset	112 ret_sp = jt->last_Java_sp();
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	113 frame ret_frame2(ret_sp, frame::unpatchable, addr.pc());
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	114 if (ret_frame2.safe_for_sender(jt)) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	115 *fr_addr = ret_frame2;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	116 return true;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	117 }
0 a61af66fc99e Initial load duke parents: diff changeset	118 }
a61af66fc99e Initial load duke parents: diff changeset	119
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	120 // This is the best we can do. We will only be able to decode the top frame
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	121
0 a61af66fc99e Initial load duke parents: diff changeset	122 *fr_addr = ret_frame;
a61af66fc99e Initial load duke parents: diff changeset	123 return true;
a61af66fc99e Initial load duke parents: diff changeset	124 }
a61af66fc99e Initial load duke parents: diff changeset	125
a61af66fc99e Initial load duke parents: diff changeset	126 // At this point, we know we weren't running Java code. We might
a61af66fc99e Initial load duke parents: diff changeset	127 // have a last_Java_sp, but we don't have a walkable frame.
a61af66fc99e Initial load duke parents: diff changeset	128 // However, we might still be able to construct something useful
a61af66fc99e Initial load duke parents: diff changeset	129 // if the thread was running native code.
a61af66fc99e Initial load duke parents: diff changeset	130 if (jt->has_last_Java_frame()) {
a61af66fc99e Initial load duke parents: diff changeset	131 assert(!jt->frame_anchor()->walkable(), "case covered above");
a61af66fc99e Initial load duke parents: diff changeset	132
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	133 frame ret_frame(jt->last_Java_sp(), frame::unpatchable, addr.pc());
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	134 *fr_addr = ret_frame;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	135 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	136 }
a61af66fc99e Initial load duke parents: diff changeset	137
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	138 // nothing else to try but what we found initially
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	139
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	140 *fr_addr = ret_frame;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	141 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	142 }

Mercurial > hg > graal-compiler

annotate src/os_cpu/solaris_sparc/vm/thread_solaris_sparc.cpp @ 107:93b6525e3b82