truffle: src/share/vm/prims/forte.cpp annotate

annotate src/share/vm/prims/forte.cpp @ 1972:f95d63e2154a

6989984: Use standard include model for Hospot Summary: Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg

author	stefank
date	Tue, 23 Nov 2010 13:22:55 -0800
parents	c18cbe5936b8
children	d70fe6ab4436

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
0 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 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1489 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1489 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1489 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #include "code/debugInfoRec.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27 #include "code/pcDesc.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "gc_interface/collectedHeap.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "memory/space.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30 #include "memory/universe.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	31 #include "oops/oop.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	32 #include "oops/oop.inline2.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	33 #include "prims/forte.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	34 #include "runtime/thread.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	35 #include "runtime/vframe.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	36 #include "runtime/vframeArray.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	37
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	38 // These name match the names reported by the forte quality kit
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	39 enum {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	40 ticks_no_Java_frame = 0,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	41 ticks_no_class_load = -1,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	42 ticks_GC_active = -2,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	43 ticks_unknown_not_Java = -3,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	44 ticks_not_walkable_not_Java = -4,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	45 ticks_unknown_Java = -5,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	46 ticks_not_walkable_Java = -6,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	47 ticks_unknown_state = -7,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	48 ticks_thread_exit = -8,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	49 ticks_deopt = -9,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	50 ticks_safepoint = -10
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	51 };
0 a61af66fc99e Initial load duke parents: diff changeset	52
a61af66fc99e Initial load duke parents: diff changeset	53 //-------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	54
a61af66fc99e Initial load duke parents: diff changeset	55 // Native interfaces for use by Forte tools.
a61af66fc99e Initial load duke parents: diff changeset	56
a61af66fc99e Initial load duke parents: diff changeset	57
a61af66fc99e Initial load duke parents: diff changeset	58 #ifndef IA64
a61af66fc99e Initial load duke parents: diff changeset	59
a61af66fc99e Initial load duke parents: diff changeset	60 class vframeStreamForte : public vframeStreamCommon {
a61af66fc99e Initial load duke parents: diff changeset	61 public:
a61af66fc99e Initial load duke parents: diff changeset	62 // constructor that starts with sender of frame fr (top_frame)
a61af66fc99e Initial load duke parents: diff changeset	63 vframeStreamForte(JavaThread *jt, frame fr, bool stop_at_java_call_stub);
a61af66fc99e Initial load duke parents: diff changeset	64 void forte_next();
a61af66fc99e Initial load duke parents: diff changeset	65 };
a61af66fc99e Initial load duke parents: diff changeset	66
a61af66fc99e Initial load duke parents: diff changeset	67
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	68 static bool is_decipherable_compiled_frame(JavaThread* thread, frame* fr, nmethod* nm);
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	69 static bool is_decipherable_interpreted_frame(JavaThread* thread,
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	70 frame* fr,
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	71 methodOop* method_p,
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	72 int* bci_p);
0 a61af66fc99e Initial load duke parents: diff changeset	73
a61af66fc99e Initial load duke parents: diff changeset	74
a61af66fc99e Initial load duke parents: diff changeset	75
a61af66fc99e Initial load duke parents: diff changeset	76
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	77 vframeStreamForte::vframeStreamForte(JavaThread *jt,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	78 frame fr,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	79 bool stop_at_java_call_stub) : vframeStreamCommon(jt) {
0 a61af66fc99e Initial load duke parents: diff changeset	80
a61af66fc99e Initial load duke parents: diff changeset	81 _stop_at_java_call_stub = stop_at_java_call_stub;
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	82 _frame = fr;
0 a61af66fc99e Initial load duke parents: diff changeset	83
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	84 // We must always have a valid frame to start filling
0 a61af66fc99e Initial load duke parents: diff changeset	85
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	86 bool filled_in = fill_from_frame();
0 a61af66fc99e Initial load duke parents: diff changeset	87
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	88 assert(filled_in, "invariant");
0 a61af66fc99e Initial load duke parents: diff changeset	89
a61af66fc99e Initial load duke parents: diff changeset	90 }
a61af66fc99e Initial load duke parents: diff changeset	91
a61af66fc99e Initial load duke parents: diff changeset	92
a61af66fc99e Initial load duke parents: diff changeset	93 // Solaris SPARC Compiler1 needs an additional check on the grandparent
a61af66fc99e Initial load duke parents: diff changeset	94 // of the top_frame when the parent of the top_frame is interpreted and
a61af66fc99e Initial load duke parents: diff changeset	95 // the grandparent is compiled. However, in this method we do not know
a61af66fc99e Initial load duke parents: diff changeset	96 // the relationship of the current _frame relative to the top_frame so
a61af66fc99e Initial load duke parents: diff changeset	97 // we implement a more broad sanity check. When the previous callee is
a61af66fc99e Initial load duke parents: diff changeset	98 // interpreted and the current sender is compiled, we verify that the
a61af66fc99e Initial load duke parents: diff changeset	99 // current sender is also walkable. If it is not walkable, then we mark
a61af66fc99e Initial load duke parents: diff changeset	100 // the current vframeStream as at the end.
a61af66fc99e Initial load duke parents: diff changeset	101 void vframeStreamForte::forte_next() {
a61af66fc99e Initial load duke parents: diff changeset	102 // handle frames with inlining
a61af66fc99e Initial load duke parents: diff changeset	103 if (_mode == compiled_mode &&
a61af66fc99e Initial load duke parents: diff changeset	104 vframeStreamCommon::fill_in_compiled_inlined_sender()) {
a61af66fc99e Initial load duke parents: diff changeset	105 return;
a61af66fc99e Initial load duke parents: diff changeset	106 }
a61af66fc99e Initial load duke parents: diff changeset	107
a61af66fc99e Initial load duke parents: diff changeset	108 // handle general case
a61af66fc99e Initial load duke parents: diff changeset	109
a61af66fc99e Initial load duke parents: diff changeset	110 int loop_count = 0;
a61af66fc99e Initial load duke parents: diff changeset	111 int loop_max = MaxJavaStackTraceDepth * 2;
a61af66fc99e Initial load duke parents: diff changeset	112
a61af66fc99e Initial load duke parents: diff changeset	113
a61af66fc99e Initial load duke parents: diff changeset	114 do {
a61af66fc99e Initial load duke parents: diff changeset	115
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	116 loop_count++;
0 a61af66fc99e Initial load duke parents: diff changeset	117
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	118 // By the time we get here we should never see unsafe but better
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	119 // safe then segv'd
0 a61af66fc99e Initial load duke parents: diff changeset	120
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	121 if (loop_count > loop_max \|\| !_frame.safe_for_sender(_thread)) {
0 a61af66fc99e Initial load duke parents: diff changeset	122 _mode = at_end_mode;
a61af66fc99e Initial load duke parents: diff changeset	123 return;
a61af66fc99e Initial load duke parents: diff changeset	124 }
a61af66fc99e Initial load duke parents: diff changeset	125
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	126 _frame = _frame.sender(&_reg_map);
0 a61af66fc99e Initial load duke parents: diff changeset	127
a61af66fc99e Initial load duke parents: diff changeset	128 } while (!fill_from_frame());
a61af66fc99e Initial load duke parents: diff changeset	129 }
a61af66fc99e Initial load duke parents: diff changeset	130
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	131 // Determine if 'fr' is a decipherable compiled frame. We are already
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	132 // assured that fr is for a java nmethod.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	133
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	134 static bool is_decipherable_compiled_frame(JavaThread* thread, frame* fr, nmethod* nm) {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	135 assert(nm->is_java_method(), "invariant");
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	136
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	137 if (thread->has_last_Java_frame() && thread->last_Java_pc() == fr->pc()) {
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	138 // We're stopped at a call into the JVM so look for a PcDesc with
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	139 // the actual pc reported by the frame.
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	140 PcDesc* pc_desc = nm->pc_desc_at(fr->pc());
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	141
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	142 // Did we find a useful PcDesc?
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	143 if (pc_desc != NULL &&
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	144 pc_desc->scope_decode_offset() != DebugInformationRecorder::serialized_null) {
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	145 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	146 }
a61af66fc99e Initial load duke parents: diff changeset	147 }
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	148
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	149 // We're at some random pc in the nmethod so search for the PcDesc
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	150 // whose pc is greater than the current PC. It's done this way
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	151 // because the extra PcDescs that are recorded for improved debug
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	152 // info record the end of the region covered by the ScopeDesc
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	153 // instead of the beginning.
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	154 PcDesc* pc_desc = nm->pc_desc_near(fr->pc() + 1);
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	155
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	156 // Now do we have a useful PcDesc?
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	157 if (pc_desc == NULL \|\|
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	158 pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) {
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	159 // No debug information available for this pc
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	160 // vframeStream would explode if we try and walk the frames.
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	161 return false;
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	162 }
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	163
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	164 // This PcDesc is useful however we must adjust the frame's pc
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	165 // so that the vframeStream lookups will use this same pc
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	166 fr->set_pc(pc_desc->real_pc(nm));
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	167 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	168 }
a61af66fc99e Initial load duke parents: diff changeset	169
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	170
0 a61af66fc99e Initial load duke parents: diff changeset	171 // Determine if 'fr' is a walkable interpreted frame. Returns false
a61af66fc99e Initial load duke parents: diff changeset	172 // if it is not. method_p, and bci_p are not set when false is
a61af66fc99e Initial load duke parents: diff changeset	173 // returned. *method_p is non-NULL if frame was executing a Java
a61af66fc99e Initial load duke parents: diff changeset	174 // method. *bci_p is != -1 if a valid BCI in the Java method could
a61af66fc99e Initial load duke parents: diff changeset	175 // be found.
a61af66fc99e Initial load duke parents: diff changeset	176 // Note: this method returns true when a valid Java method is found
a61af66fc99e Initial load duke parents: diff changeset	177 // even if a valid BCI cannot be found.
a61af66fc99e Initial load duke parents: diff changeset	178
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	179 static bool is_decipherable_interpreted_frame(JavaThread* thread,
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	180 frame* fr,
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	181 methodOop* method_p,
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	182 int* bci_p) {
0 a61af66fc99e Initial load duke parents: diff changeset	183 assert(fr->is_interpreted_frame(), "just checking");
a61af66fc99e Initial load duke parents: diff changeset	184
a61af66fc99e Initial load duke parents: diff changeset	185 // top frame is an interpreted frame
a61af66fc99e Initial load duke parents: diff changeset	186 // check if it is walkable (i.e. valid methodOop and valid bci)
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	187
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	188 // Because we may be racing a gc thread the method and/or bci
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	189 // of a valid interpreter frame may look bad causing us to
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	190 // fail the is_interpreted_frame_valid test. If the thread
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	191 // is in any of the following states we are assured that the
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	192 // frame is in fact valid and we must have hit the race.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	193
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	194 JavaThreadState state = thread->thread_state();
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	195 bool known_valid = (state == _thread_in_native \|\|
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	196 state == _thread_in_vm \|\|
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	197 state == _thread_blocked );
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	198
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	199 if (known_valid \|\| fr->is_interpreted_frame_valid(thread)) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	200
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	201 // The frame code should completely validate the frame so that
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	202 // references to methodOop and bci are completely safe to access
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	203 // If they aren't the frame code should be fixed not this
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	204 // code. However since gc isn't locked out the values could be
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	205 // stale. This is a race we can never completely win since we can't
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	206 // lock out gc so do one last check after retrieving their values
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	207 // from the frame for additional safety
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	208
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	209 methodOop method = fr->interpreter_frame_method();
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	210
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	211 // We've at least found a method.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	212 // NOTE: there is something to be said for the approach that
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	213 // if we don't find a valid bci then the method is not likely
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	214 // a valid method. Then again we may have caught an interpreter
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	215 // frame in the middle of construction and the bci field is
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	216 // not yet valid.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	217
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	218 *method_p = method;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	219
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	220 // See if gc may have invalidated method since we validated frame
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	221
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	222 if (!Universe::heap()->is_valid_method(method)) return false;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	223
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	224 intptr_t bcx = fr->interpreter_frame_bcx();
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	225
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	226 int bci = method->validate_bci_from_bcx(bcx);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	227
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	228 // note: bci is set to -1 if not a valid bci
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	229 *bci_p = bci;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	230 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	231 }
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	232
0 a61af66fc99e Initial load duke parents: diff changeset	233 return false;
a61af66fc99e Initial load duke parents: diff changeset	234 }
a61af66fc99e Initial load duke parents: diff changeset	235
a61af66fc99e Initial load duke parents: diff changeset	236
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	237 // Determine if 'fr' can be used to find an initial Java frame.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	238 // Return false if it can not find a fully decipherable Java frame
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	239 // (in other words a frame that isn't safe to use in a vframe stream).
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	240 // Obviously if it can't even find a Java frame false will also be returned.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	241 //
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	242 // If we find a Java frame decipherable or not then by definition we have
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	243 // identified a method and that will be returned to the caller via method_p.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	244 // If we can determine a bci that is returned also. (Hmm is it possible
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	245 // to return a method and bci and still return false? )
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	246 //
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	247 // The initial Java frame we find (if any) is return via initial_frame_p.
0 a61af66fc99e Initial load duke parents: diff changeset	248 //
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	249
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	250 static bool find_initial_Java_frame(JavaThread* thread,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	251 frame* fr,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	252 frame* initial_frame_p,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	253 methodOop* method_p,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	254 int* bci_p) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	255
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	256 // It is possible that for a frame containing an nmethod
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	257 // we can capture the method but no bci. If we get no
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	258 // bci the frame isn't walkable but the method is usable.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	259 // Therefore we init the returned methodOop to NULL so the
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	260 // caller can make the distinction.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	261
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	262 *method_p = NULL;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	263
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	264 // On the initial call to this method the frame we get may not be
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	265 // recognizable to us. This should only happen if we are in a JRT_LEAF
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	266 // or something called by a JRT_LEAF method.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	267
0 a61af66fc99e Initial load duke parents: diff changeset	268
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	269
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	270 frame candidate = *fr;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	271
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	272 // If the starting frame we were given has no codeBlob associated with
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	273 // it see if we can find such a frame because only frames with codeBlobs
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	274 // are possible Java frames.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	275
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	276 if (fr->cb() == NULL) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	277
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	278 // See if we can find a useful frame
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	279 int loop_count;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	280 int loop_max = MaxJavaStackTraceDepth * 2;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	281 RegisterMap map(thread, false);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	282
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	283 for (loop_count = 0; loop_count < loop_max; loop_count++) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	284 if (!candidate.safe_for_sender(thread)) return false;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	285 candidate = candidate.sender(&map);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	286 if (candidate.cb() != NULL) break;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	287 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	288 if (candidate.cb() == NULL) return false;
0 a61af66fc99e Initial load duke parents: diff changeset	289 }
a61af66fc99e Initial load duke parents: diff changeset	290
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	291 // We have a frame known to be in the codeCache
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	292 // We will hopefully be able to figure out something to do with it.
0 a61af66fc99e Initial load duke parents: diff changeset	293 int loop_count;
a61af66fc99e Initial load duke parents: diff changeset	294 int loop_max = MaxJavaStackTraceDepth * 2;
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	295 RegisterMap map(thread, false);
0 a61af66fc99e Initial load duke parents: diff changeset	296
a61af66fc99e Initial load duke parents: diff changeset	297 for (loop_count = 0; loop_count < loop_max; loop_count++) {
a61af66fc99e Initial load duke parents: diff changeset	298
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	299 if (candidate.is_first_frame()) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	300 // If initial frame is frame from StubGenerator and there is no
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	301 // previous anchor, there are no java frames associated with a method
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	302 return false;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	303 }
0 a61af66fc99e Initial load duke parents: diff changeset	304
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	305 if (candidate.is_interpreted_frame()) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	306 if (is_decipherable_interpreted_frame(thread, &candidate, method_p, bci_p)) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	307 *initial_frame_p = candidate;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	308 return true;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	309 }
0 a61af66fc99e Initial load duke parents: diff changeset	310
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	311 // Hopefully we got some data
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	312 return false;
0 a61af66fc99e Initial load duke parents: diff changeset	313 }
a61af66fc99e Initial load duke parents: diff changeset	314
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	315 if (candidate.cb()->is_nmethod()) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	316
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	317 nmethod* nm = (nmethod*) candidate.cb();
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	318 *method_p = nm->method();
0 a61af66fc99e Initial load duke parents: diff changeset	319
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	320 // If the frame isn't fully decipherable then the default
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	321 // value for the bci is a signal that we don't have a bci.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	322 // If we have a decipherable frame this bci value will
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	323 // not be used.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	324
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	325 *bci_p = -1;
0 a61af66fc99e Initial load duke parents: diff changeset	326
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	327 *initial_frame_p = candidate;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	328
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	329 // Native wrapper code is trivial to decode by vframeStream
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	330
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	331 if (nm->is_native_method()) return true;
0 a61af66fc99e Initial load duke parents: diff changeset	332
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	333 // If it isn't decipherable then we have found a pc that doesn't
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	334 // have a PCDesc that can get us a bci however we did find
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	335 // a method
0 a61af66fc99e Initial load duke parents: diff changeset	336
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	337 if (!is_decipherable_compiled_frame(thread, &candidate, nm)) {
0 a61af66fc99e Initial load duke parents: diff changeset	338 return false;
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	339 }
0 a61af66fc99e Initial load duke parents: diff changeset	340
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	341 // is_decipherable_compiled_frame may modify candidate's pc
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	342 *initial_frame_p = candidate;
0 a61af66fc99e Initial load duke parents: diff changeset	343
1349 547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	344 assert(nm->pc_desc_at(candidate.pc()) != NULL, "if it's decipherable then pc must be valid");
547cbe6dacc5 6936709: AsyncGetCallTrace doesn't handle inexact stack walking properly never parents: 196 diff changeset	345
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	346 return true;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	347 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	348
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	349 // Must be some stub frame that we don't care about
0 a61af66fc99e Initial load duke parents: diff changeset	350
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	351 if (!candidate.safe_for_sender(thread)) return false;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	352 candidate = candidate.sender(&map);
0 a61af66fc99e Initial load duke parents: diff changeset	353
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	354 // If it isn't in the code cache something is wrong
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	355 // since once we find a frame in the code cache they
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	356 // all should be there.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	357
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	358 if (candidate.cb() == NULL) return false;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	359
0 a61af66fc99e Initial load duke parents: diff changeset	360 }
a61af66fc99e Initial load duke parents: diff changeset	361
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	362 return false;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	363
0 a61af66fc99e Initial load duke parents: diff changeset	364 }
a61af66fc99e Initial load duke parents: diff changeset	365
a61af66fc99e Initial load duke parents: diff changeset	366
a61af66fc99e Initial load duke parents: diff changeset	367 // call frame copied from old .h file and renamed
a61af66fc99e Initial load duke parents: diff changeset	368 typedef struct {
a61af66fc99e Initial load duke parents: diff changeset	369 jint lineno; // line number in the source file
a61af66fc99e Initial load duke parents: diff changeset	370 jmethodID method_id; // method executed in this frame
a61af66fc99e Initial load duke parents: diff changeset	371 } ASGCT_CallFrame;
a61af66fc99e Initial load duke parents: diff changeset	372
a61af66fc99e Initial load duke parents: diff changeset	373 // call trace copied from old .h file and renamed
a61af66fc99e Initial load duke parents: diff changeset	374 typedef struct {
a61af66fc99e Initial load duke parents: diff changeset	375 JNIEnv *env_id; // Env where trace was recorded
a61af66fc99e Initial load duke parents: diff changeset	376 jint num_frames; // number of frames in this trace
a61af66fc99e Initial load duke parents: diff changeset	377 ASGCT_CallFrame *frames; // frames
a61af66fc99e Initial load duke parents: diff changeset	378 } ASGCT_CallTrace;
a61af66fc99e Initial load duke parents: diff changeset	379
a61af66fc99e Initial load duke parents: diff changeset	380 static void forte_fill_call_trace_given_top(JavaThread* thd,
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	381 ASGCT_CallTrace* trace,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	382 int depth,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	383 frame top_frame) {
0 a61af66fc99e Initial load duke parents: diff changeset	384 NoHandleMark nhm;
a61af66fc99e Initial load duke parents: diff changeset	385
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	386 frame initial_Java_frame;
0 a61af66fc99e Initial load duke parents: diff changeset	387 methodOop method;
a61af66fc99e Initial load duke parents: diff changeset	388 int bci;
a61af66fc99e Initial load duke parents: diff changeset	389 int count;
a61af66fc99e Initial load duke parents: diff changeset	390
a61af66fc99e Initial load duke parents: diff changeset	391 count = 0;
a61af66fc99e Initial load duke parents: diff changeset	392 assert(trace->frames != NULL, "trace->frames must be non-NULL");
a61af66fc99e Initial load duke parents: diff changeset	393
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	394 bool fully_decipherable = find_initial_Java_frame(thd, &top_frame, &initial_Java_frame, &method, &bci);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	395
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	396 // The frame might not be walkable but still recovered a method
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	397 // (e.g. an nmethod with no scope info for the pc
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	398
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	399 if (method == NULL) return;
0 a61af66fc99e Initial load duke parents: diff changeset	400
a61af66fc99e Initial load duke parents: diff changeset	401 CollectedHeap* ch = Universe::heap();
a61af66fc99e Initial load duke parents: diff changeset	402
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	403 // The method is not stored GC safe so see if GC became active
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	404 // after we entered AsyncGetCallTrace() and before we try to
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	405 // use the methodOop.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	406 // Yes, there is still a window after this check and before
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	407 // we use methodOop below, but we can't lock out GC so that
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	408 // has to be an acceptable risk.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	409 if (!ch->is_valid_method(method)) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	410 trace->num_frames = ticks_GC_active; // -2
0 a61af66fc99e Initial load duke parents: diff changeset	411 return;
a61af66fc99e Initial load duke parents: diff changeset	412 }
a61af66fc99e Initial load duke parents: diff changeset	413
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	414 // We got a Java frame however it isn't fully decipherable
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	415 // so it won't necessarily be safe to use it for the
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	416 // initial frame in the vframe stream.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	417
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	418 if (!fully_decipherable) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	419 // Take whatever method the top-frame decoder managed to scrape up.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	420 // We look further at the top frame only if non-safepoint
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	421 // debugging information is available.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	422 count++;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	423 trace->num_frames = count;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	424 trace->frames[0].method_id = method->find_jmethod_id_or_null();
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	425 if (!method->is_native()) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	426 trace->frames[0].lineno = bci;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	427 } else {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	428 trace->frames[0].lineno = -3;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	429 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	430
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	431 if (!initial_Java_frame.safe_for_sender(thd)) return;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	432
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	433 RegisterMap map(thd, false);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	434 initial_Java_frame = initial_Java_frame.sender(&map);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	435 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	436
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	437 vframeStreamForte st(thd, initial_Java_frame, false);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	438
0 a61af66fc99e Initial load duke parents: diff changeset	439 for (; !st.at_end() && count < depth; st.forte_next(), count++) {
a61af66fc99e Initial load duke parents: diff changeset	440 bci = st.bci();
a61af66fc99e Initial load duke parents: diff changeset	441 method = st.method();
a61af66fc99e Initial load duke parents: diff changeset	442
a61af66fc99e Initial load duke parents: diff changeset	443 // The method is not stored GC safe so see if GC became active
a61af66fc99e Initial load duke parents: diff changeset	444 // after we entered AsyncGetCallTrace() and before we try to
a61af66fc99e Initial load duke parents: diff changeset	445 // use the methodOop.
a61af66fc99e Initial load duke parents: diff changeset	446 // Yes, there is still a window after this check and before
a61af66fc99e Initial load duke parents: diff changeset	447 // we use methodOop below, but we can't lock out GC so that
a61af66fc99e Initial load duke parents: diff changeset	448 // has to be an acceptable risk.
a61af66fc99e Initial load duke parents: diff changeset	449 if (!ch->is_valid_method(method)) {
a61af66fc99e Initial load duke parents: diff changeset	450 // we throw away everything we've gathered in this sample since
a61af66fc99e Initial load duke parents: diff changeset	451 // none of it is safe
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	452 trace->num_frames = ticks_GC_active; // -2
0 a61af66fc99e Initial load duke parents: diff changeset	453 return;
a61af66fc99e Initial load duke parents: diff changeset	454 }
a61af66fc99e Initial load duke parents: diff changeset	455
a61af66fc99e Initial load duke parents: diff changeset	456 trace->frames[count].method_id = method->find_jmethod_id_or_null();
a61af66fc99e Initial load duke parents: diff changeset	457 if (!method->is_native()) {
a61af66fc99e Initial load duke parents: diff changeset	458 trace->frames[count].lineno = bci;
a61af66fc99e Initial load duke parents: diff changeset	459 } else {
a61af66fc99e Initial load duke parents: diff changeset	460 trace->frames[count].lineno = -3;
a61af66fc99e Initial load duke parents: diff changeset	461 }
a61af66fc99e Initial load duke parents: diff changeset	462 }
a61af66fc99e Initial load duke parents: diff changeset	463 trace->num_frames = count;
a61af66fc99e Initial load duke parents: diff changeset	464 return;
a61af66fc99e Initial load duke parents: diff changeset	465 }
a61af66fc99e Initial load duke parents: diff changeset	466
a61af66fc99e Initial load duke parents: diff changeset	467
a61af66fc99e Initial load duke parents: diff changeset	468 // Forte Analyzer AsyncGetCallTrace() entry point. Currently supported
a61af66fc99e Initial load duke parents: diff changeset	469 // on Linux X86, Solaris SPARC and Solaris X86.
a61af66fc99e Initial load duke parents: diff changeset	470 //
a61af66fc99e Initial load duke parents: diff changeset	471 // Async-safe version of GetCallTrace being called from a signal handler
a61af66fc99e Initial load duke parents: diff changeset	472 // when a LWP gets interrupted by SIGPROF but the stack traces are filled
a61af66fc99e Initial load duke parents: diff changeset	473 // with different content (see below).
a61af66fc99e Initial load duke parents: diff changeset	474 //
a61af66fc99e Initial load duke parents: diff changeset	475 // This function must only be called when JVM/TI
a61af66fc99e Initial load duke parents: diff changeset	476 // CLASS_LOAD events have been enabled since agent startup. The enabled
a61af66fc99e Initial load duke parents: diff changeset	477 // event will cause the jmethodIDs to be allocated at class load time.
a61af66fc99e Initial load duke parents: diff changeset	478 // The jmethodIDs cannot be allocated in a signal handler because locks
a61af66fc99e Initial load duke parents: diff changeset	479 // cannot be grabbed in a signal handler safely.
a61af66fc99e Initial load duke parents: diff changeset	480 //
a61af66fc99e Initial load duke parents: diff changeset	481 // void (AsyncGetCallTrace)(ASGCT_CallTrace trace, jint depth, void* ucontext)
a61af66fc99e Initial load duke parents: diff changeset	482 //
a61af66fc99e Initial load duke parents: diff changeset	483 // Called by the profiler to obtain the current method call stack trace for
a61af66fc99e Initial load duke parents: diff changeset	484 // a given thread. The thread is identified by the env_id field in the
a61af66fc99e Initial load duke parents: diff changeset	485 // ASGCT_CallTrace structure. The profiler agent should allocate a ASGCT_CallTrace
a61af66fc99e Initial load duke parents: diff changeset	486 // structure with enough memory for the requested stack depth. The VM fills in
a61af66fc99e Initial load duke parents: diff changeset	487 // the frames buffer and the num_frames field.
a61af66fc99e Initial load duke parents: diff changeset	488 //
a61af66fc99e Initial load duke parents: diff changeset	489 // Arguments:
a61af66fc99e Initial load duke parents: diff changeset	490 //
a61af66fc99e Initial load duke parents: diff changeset	491 // trace - trace data structure to be filled by the VM.
a61af66fc99e Initial load duke parents: diff changeset	492 // depth - depth of the call stack trace.
a61af66fc99e Initial load duke parents: diff changeset	493 // ucontext - ucontext_t of the LWP
a61af66fc99e Initial load duke parents: diff changeset	494 //
a61af66fc99e Initial load duke parents: diff changeset	495 // ASGCT_CallTrace:
a61af66fc99e Initial load duke parents: diff changeset	496 // typedef struct {
a61af66fc99e Initial load duke parents: diff changeset	497 // JNIEnv *env_id;
a61af66fc99e Initial load duke parents: diff changeset	498 // jint num_frames;
a61af66fc99e Initial load duke parents: diff changeset	499 // ASGCT_CallFrame *frames;
a61af66fc99e Initial load duke parents: diff changeset	500 // } ASGCT_CallTrace;
a61af66fc99e Initial load duke parents: diff changeset	501 //
a61af66fc99e Initial load duke parents: diff changeset	502 // Fields:
a61af66fc99e Initial load duke parents: diff changeset	503 // env_id - ID of thread which executed this trace.
a61af66fc99e Initial load duke parents: diff changeset	504 // num_frames - number of frames in the trace.
a61af66fc99e Initial load duke parents: diff changeset	505 // (< 0 indicates the frame is not walkable).
a61af66fc99e Initial load duke parents: diff changeset	506 // frames - the ASGCT_CallFrames that make up this trace. Callee followed by callers.
a61af66fc99e Initial load duke parents: diff changeset	507 //
a61af66fc99e Initial load duke parents: diff changeset	508 // ASGCT_CallFrame:
a61af66fc99e Initial load duke parents: diff changeset	509 // typedef struct {
a61af66fc99e Initial load duke parents: diff changeset	510 // jint lineno;
a61af66fc99e Initial load duke parents: diff changeset	511 // jmethodID method_id;
a61af66fc99e Initial load duke parents: diff changeset	512 // } ASGCT_CallFrame;
a61af66fc99e Initial load duke parents: diff changeset	513 //
a61af66fc99e Initial load duke parents: diff changeset	514 // Fields:
a61af66fc99e Initial load duke parents: diff changeset	515 // 1) For Java frame (interpreted and compiled),
a61af66fc99e Initial load duke parents: diff changeset	516 // lineno - bci of the method being executed or -1 if bci is not available
a61af66fc99e Initial load duke parents: diff changeset	517 // method_id - jmethodID of the method being executed
a61af66fc99e Initial load duke parents: diff changeset	518 // 2) For native method
a61af66fc99e Initial load duke parents: diff changeset	519 // lineno - (-3)
a61af66fc99e Initial load duke parents: diff changeset	520 // method_id - jmethodID of the method being executed
a61af66fc99e Initial load duke parents: diff changeset	521
a61af66fc99e Initial load duke parents: diff changeset	522 extern "C" {
a61af66fc99e Initial load duke parents: diff changeset	523 void AsyncGetCallTrace(ASGCT_CallTrace trace, jint depth, void ucontext) {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	524
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	525 // This is if'd out because we no longer use thread suspension.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	526 // However if someone wanted to backport this to a 5.0 jvm then this
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	527 // code would be important.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	528 #if 0
0 a61af66fc99e Initial load duke parents: diff changeset	529 if (SafepointSynchronize::is_synchronizing()) {
a61af66fc99e Initial load duke parents: diff changeset	530 // The safepoint mechanism is trying to synchronize all the threads.
a61af66fc99e Initial load duke parents: diff changeset	531 // Since this can involve thread suspension, it is not safe for us
a61af66fc99e Initial load duke parents: diff changeset	532 // to be here. We can reduce the deadlock risk window by quickly
a61af66fc99e Initial load duke parents: diff changeset	533 // returning to the SIGPROF handler. However, it is still possible
a61af66fc99e Initial load duke parents: diff changeset	534 // for VMThread to catch us here or in the SIGPROF handler. If we
a61af66fc99e Initial load duke parents: diff changeset	535 // are suspended while holding a resource and another thread blocks
a61af66fc99e Initial load duke parents: diff changeset	536 // on that resource in the SIGPROF handler, then we will have a
a61af66fc99e Initial load duke parents: diff changeset	537 // three-thread deadlock (VMThread, this thread, the other thread).
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	538 trace->num_frames = ticks_safepoint; // -10
0 a61af66fc99e Initial load duke parents: diff changeset	539 return;
a61af66fc99e Initial load duke parents: diff changeset	540 }
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	541 #endif
0 a61af66fc99e Initial load duke parents: diff changeset	542
a61af66fc99e Initial load duke parents: diff changeset	543 JavaThread* thread;
a61af66fc99e Initial load duke parents: diff changeset	544
a61af66fc99e Initial load duke parents: diff changeset	545 if (trace->env_id == NULL \|\|
a61af66fc99e Initial load duke parents: diff changeset	546 (thread = JavaThread::thread_from_jni_environment(trace->env_id)) == NULL \|\|
a61af66fc99e Initial load duke parents: diff changeset	547 thread->is_exiting()) {
a61af66fc99e Initial load duke parents: diff changeset	548
a61af66fc99e Initial load duke parents: diff changeset	549 // bad env_id, thread has exited or thread is exiting
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	550 trace->num_frames = ticks_thread_exit; // -8
0 a61af66fc99e Initial load duke parents: diff changeset	551 return;
a61af66fc99e Initial load duke parents: diff changeset	552 }
a61af66fc99e Initial load duke parents: diff changeset	553
a61af66fc99e Initial load duke parents: diff changeset	554 if (thread->in_deopt_handler()) {
a61af66fc99e Initial load duke parents: diff changeset	555 // thread is in the deoptimization handler so return no frames
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	556 trace->num_frames = ticks_deopt; // -9
0 a61af66fc99e Initial load duke parents: diff changeset	557 return;
a61af66fc99e Initial load duke parents: diff changeset	558 }
a61af66fc99e Initial load duke parents: diff changeset	559
a61af66fc99e Initial load duke parents: diff changeset	560 assert(JavaThread::current() == thread,
a61af66fc99e Initial load duke parents: diff changeset	561 "AsyncGetCallTrace must be called by the current interrupted thread");
a61af66fc99e Initial load duke parents: diff changeset	562
a61af66fc99e Initial load duke parents: diff changeset	563 if (!JvmtiExport::should_post_class_load()) {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	564 trace->num_frames = ticks_no_class_load; // -1
0 a61af66fc99e Initial load duke parents: diff changeset	565 return;
a61af66fc99e Initial load duke parents: diff changeset	566 }
a61af66fc99e Initial load duke parents: diff changeset	567
a61af66fc99e Initial load duke parents: diff changeset	568 if (Universe::heap()->is_gc_active()) {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	569 trace->num_frames = ticks_GC_active; // -2
0 a61af66fc99e Initial load duke parents: diff changeset	570 return;
a61af66fc99e Initial load duke parents: diff changeset	571 }
a61af66fc99e Initial load duke parents: diff changeset	572
a61af66fc99e Initial load duke parents: diff changeset	573 switch (thread->thread_state()) {
a61af66fc99e Initial load duke parents: diff changeset	574 case _thread_new:
a61af66fc99e Initial load duke parents: diff changeset	575 case _thread_uninitialized:
a61af66fc99e Initial load duke parents: diff changeset	576 case _thread_new_trans:
a61af66fc99e Initial load duke parents: diff changeset	577 // We found the thread on the threads list above, but it is too
a61af66fc99e Initial load duke parents: diff changeset	578 // young to be useful so return that there are no Java frames.
a61af66fc99e Initial load duke parents: diff changeset	579 trace->num_frames = 0;
a61af66fc99e Initial load duke parents: diff changeset	580 break;
a61af66fc99e Initial load duke parents: diff changeset	581 case _thread_in_native:
a61af66fc99e Initial load duke parents: diff changeset	582 case _thread_in_native_trans:
a61af66fc99e Initial load duke parents: diff changeset	583 case _thread_blocked:
a61af66fc99e Initial load duke parents: diff changeset	584 case _thread_blocked_trans:
a61af66fc99e Initial load duke parents: diff changeset	585 case _thread_in_vm:
a61af66fc99e Initial load duke parents: diff changeset	586 case _thread_in_vm_trans:
a61af66fc99e Initial load duke parents: diff changeset	587 {
a61af66fc99e Initial load duke parents: diff changeset	588 frame fr;
a61af66fc99e Initial load duke parents: diff changeset	589
a61af66fc99e Initial load duke parents: diff changeset	590 // param isInJava == false - indicate we aren't in Java code
a61af66fc99e Initial load duke parents: diff changeset	591 if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, false)) {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	592 trace->num_frames = ticks_unknown_not_Java; // -3 unknown frame
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	593 } else {
0 a61af66fc99e Initial load duke parents: diff changeset	594 if (!thread->has_last_Java_frame()) {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	595 trace->num_frames = 0; // No Java frames
0 a61af66fc99e Initial load duke parents: diff changeset	596 } else {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	597 trace->num_frames = ticks_not_walkable_not_Java; // -4 non walkable frame by default
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	598 forte_fill_call_trace_given_top(thread, trace, depth, fr);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	599
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	600 // This assert would seem to be valid but it is not.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	601 // It would be valid if we weren't possibly racing a gc
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	602 // thread. A gc thread can make a valid interpreted frame
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	603 // look invalid. It's a small window but it does happen.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	604 // The assert is left here commented out as a reminder.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	605 // assert(trace->num_frames != ticks_not_walkable_not_Java, "should always be walkable");
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	606
0 a61af66fc99e Initial load duke parents: diff changeset	607 }
a61af66fc99e Initial load duke parents: diff changeset	608 }
a61af66fc99e Initial load duke parents: diff changeset	609 }
a61af66fc99e Initial load duke parents: diff changeset	610 break;
a61af66fc99e Initial load duke parents: diff changeset	611 case _thread_in_Java:
a61af66fc99e Initial load duke parents: diff changeset	612 case _thread_in_Java_trans:
a61af66fc99e Initial load duke parents: diff changeset	613 {
a61af66fc99e Initial load duke parents: diff changeset	614 frame fr;
a61af66fc99e Initial load duke parents: diff changeset	615
a61af66fc99e Initial load duke parents: diff changeset	616 // param isInJava == true - indicate we are in Java code
a61af66fc99e Initial load duke parents: diff changeset	617 if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, true)) {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	618 trace->num_frames = ticks_unknown_Java; // -5 unknown frame
0 a61af66fc99e Initial load duke parents: diff changeset	619 } else {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	620 trace->num_frames = ticks_not_walkable_Java; // -6, non walkable frame by default
0 a61af66fc99e Initial load duke parents: diff changeset	621 forte_fill_call_trace_given_top(thread, trace, depth, fr);
a61af66fc99e Initial load duke parents: diff changeset	622 }
a61af66fc99e Initial load duke parents: diff changeset	623 }
a61af66fc99e Initial load duke parents: diff changeset	624 break;
a61af66fc99e Initial load duke parents: diff changeset	625 default:
a61af66fc99e Initial load duke parents: diff changeset	626 // Unknown thread state
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	627 trace->num_frames = ticks_unknown_state; // -7
0 a61af66fc99e Initial load duke parents: diff changeset	628 break;
a61af66fc99e Initial load duke parents: diff changeset	629 }
a61af66fc99e Initial load duke parents: diff changeset	630 }
a61af66fc99e Initial load duke parents: diff changeset	631
a61af66fc99e Initial load duke parents: diff changeset	632
a61af66fc99e Initial load duke parents: diff changeset	633 #ifndef _WINDOWS
a61af66fc99e Initial load duke parents: diff changeset	634 // Support for the Forte(TM) Peformance Tools collector.
a61af66fc99e Initial load duke parents: diff changeset	635 //
a61af66fc99e Initial load duke parents: diff changeset	636 // The method prototype is derived from libcollector.h. For more
a61af66fc99e Initial load duke parents: diff changeset	637 // information, please see the libcollect man page.
a61af66fc99e Initial load duke parents: diff changeset	638
a61af66fc99e Initial load duke parents: diff changeset	639 // Method to let libcollector know about a dynamically loaded function.
a61af66fc99e Initial load duke parents: diff changeset	640 // Because it is weakly bound, the calls become NOP's when the library
a61af66fc99e Initial load duke parents: diff changeset	641 // isn't present.
a61af66fc99e Initial load duke parents: diff changeset	642 void collector_func_load(char* name,
a61af66fc99e Initial load duke parents: diff changeset	643 void* null_argument_1,
a61af66fc99e Initial load duke parents: diff changeset	644 void* null_argument_2,
a61af66fc99e Initial load duke parents: diff changeset	645 void *vaddr,
a61af66fc99e Initial load duke parents: diff changeset	646 int size,
a61af66fc99e Initial load duke parents: diff changeset	647 int zero_argument,
a61af66fc99e Initial load duke parents: diff changeset	648 void* null_argument_3);
a61af66fc99e Initial load duke parents: diff changeset	649 #pragma weak collector_func_load
a61af66fc99e Initial load duke parents: diff changeset	650 #define collector_func_load(x0,x1,x2,x3,x4,x5,x6) \
a61af66fc99e Initial load duke parents: diff changeset	651 ( collector_func_load ? collector_func_load(x0,x1,x2,x3,x4,x5,x6),0 : 0 )
a61af66fc99e Initial load duke parents: diff changeset	652 #endif // !_WINDOWS
a61af66fc99e Initial load duke parents: diff changeset	653
a61af66fc99e Initial load duke parents: diff changeset	654 } // end extern "C"
a61af66fc99e Initial load duke parents: diff changeset	655 #endif // !IA64
a61af66fc99e Initial load duke parents: diff changeset	656
a61af66fc99e Initial load duke parents: diff changeset	657 void Forte::register_stub(const char* name, address start, address end) {
a61af66fc99e Initial load duke parents: diff changeset	658 #if !defined(_WINDOWS) && !defined(IA64)
a61af66fc99e Initial load duke parents: diff changeset	659 assert(pointer_delta(end, start, sizeof(jbyte)) < INT_MAX,
1489 cff162798819 6888953: some calls to function-like macros are missing semicolons jcoomes parents: 1349 diff changeset	660 "Code size exceeds maximum range");
0 a61af66fc99e Initial load duke parents: diff changeset	661
a61af66fc99e Initial load duke parents: diff changeset	662 collector_func_load((char*)name, NULL, NULL, start,
a61af66fc99e Initial load duke parents: diff changeset	663 pointer_delta(end, start, sizeof(jbyte)), 0, NULL);
a61af66fc99e Initial load duke parents: diff changeset	664 #endif // !_WINDOWS && !IA64
a61af66fc99e Initial load duke parents: diff changeset	665 }

Mercurial > hg > truffle

annotate src/share/vm/prims/forte.cpp @ 1972:f95d63e2154a