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

annotate src/share/vm/prims/forte.cpp @ 614:3db67f76d308

Merge

author	acorn
date	Thu, 05 Mar 2009 22:07:29 -0500
parents	d1605aabd0a1
children	547cbe6dacc5

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
196 d1605aabd0a1 6719955: Update copyright year xdono parents: 107 diff changeset	2 * Copyright 2003-2008 Sun Microsystems, Inc. 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 *
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/_forte.cpp.incl"
a61af66fc99e Initial load duke parents: diff changeset	27
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	28 // 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	29 enum {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	30 ticks_no_Java_frame = 0,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	31 ticks_no_class_load = -1,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	32 ticks_GC_active = -2,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	33 ticks_unknown_not_Java = -3,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	34 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	35 ticks_unknown_Java = -5,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	36 ticks_not_walkable_Java = -6,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	37 ticks_unknown_state = -7,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	38 ticks_thread_exit = -8,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	39 ticks_deopt = -9,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	40 ticks_safepoint = -10
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	41 };
0 a61af66fc99e Initial load duke parents: diff changeset	42
a61af66fc99e Initial load duke parents: diff changeset	43 //-------------------------------------------------------
a61af66fc99e Initial load duke parents: diff changeset	44
a61af66fc99e Initial load duke parents: diff changeset	45 // Native interfaces for use by Forte tools.
a61af66fc99e Initial load duke parents: diff changeset	46
a61af66fc99e Initial load duke parents: diff changeset	47
a61af66fc99e Initial load duke parents: diff changeset	48 #ifndef IA64
a61af66fc99e Initial load duke parents: diff changeset	49
a61af66fc99e Initial load duke parents: diff changeset	50 class vframeStreamForte : public vframeStreamCommon {
a61af66fc99e Initial load duke parents: diff changeset	51 public:
a61af66fc99e Initial load duke parents: diff changeset	52 // constructor that starts with sender of frame fr (top_frame)
a61af66fc99e Initial load duke parents: diff changeset	53 vframeStreamForte(JavaThread *jt, frame fr, bool stop_at_java_call_stub);
a61af66fc99e Initial load duke parents: diff changeset	54 void forte_next();
a61af66fc99e Initial load duke parents: diff changeset	55 };
a61af66fc99e Initial load duke parents: diff changeset	56
a61af66fc99e Initial load duke parents: diff changeset	57
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	58 static void is_decipherable_compiled_frame(frame* fr, RegisterMap* map,
0 a61af66fc99e Initial load duke parents: diff changeset	59 bool* is_compiled_p, bool* is_walkable_p);
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	60 static bool is_decipherable_interpreted_frame(JavaThread* thread,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	61 frame* fr,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	62 methodOop* method_p,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	63 int* bci_p);
0 a61af66fc99e Initial load duke parents: diff changeset	64
a61af66fc99e Initial load duke parents: diff changeset	65
a61af66fc99e Initial load duke parents: diff changeset	66
a61af66fc99e Initial load duke parents: diff changeset	67
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	68 vframeStreamForte::vframeStreamForte(JavaThread *jt,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	69 frame fr,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	70 bool stop_at_java_call_stub) : vframeStreamCommon(jt) {
0 a61af66fc99e Initial load duke parents: diff changeset	71
a61af66fc99e Initial load duke parents: diff changeset	72 _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	73 _frame = fr;
0 a61af66fc99e Initial load duke parents: diff changeset	74
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	75 // We must always have a valid frame to start filling
0 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 bool filled_in = fill_from_frame();
0 a61af66fc99e Initial load duke parents: diff changeset	78
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	79 assert(filled_in, "invariant");
0 a61af66fc99e Initial load duke parents: diff changeset	80
a61af66fc99e Initial load duke parents: diff changeset	81 }
a61af66fc99e Initial load duke parents: diff changeset	82
a61af66fc99e Initial load duke parents: diff changeset	83
a61af66fc99e Initial load duke parents: diff changeset	84 // Solaris SPARC Compiler1 needs an additional check on the grandparent
a61af66fc99e Initial load duke parents: diff changeset	85 // of the top_frame when the parent of the top_frame is interpreted and
a61af66fc99e Initial load duke parents: diff changeset	86 // the grandparent is compiled. However, in this method we do not know
a61af66fc99e Initial load duke parents: diff changeset	87 // the relationship of the current _frame relative to the top_frame so
a61af66fc99e Initial load duke parents: diff changeset	88 // we implement a more broad sanity check. When the previous callee is
a61af66fc99e Initial load duke parents: diff changeset	89 // interpreted and the current sender is compiled, we verify that the
a61af66fc99e Initial load duke parents: diff changeset	90 // current sender is also walkable. If it is not walkable, then we mark
a61af66fc99e Initial load duke parents: diff changeset	91 // the current vframeStream as at the end.
a61af66fc99e Initial load duke parents: diff changeset	92 void vframeStreamForte::forte_next() {
a61af66fc99e Initial load duke parents: diff changeset	93 // handle frames with inlining
a61af66fc99e Initial load duke parents: diff changeset	94 if (_mode == compiled_mode &&
a61af66fc99e Initial load duke parents: diff changeset	95 vframeStreamCommon::fill_in_compiled_inlined_sender()) {
a61af66fc99e Initial load duke parents: diff changeset	96 return;
a61af66fc99e Initial load duke parents: diff changeset	97 }
a61af66fc99e Initial load duke parents: diff changeset	98
a61af66fc99e Initial load duke parents: diff changeset	99 // handle general case
a61af66fc99e Initial load duke parents: diff changeset	100
a61af66fc99e Initial load duke parents: diff changeset	101 int loop_count = 0;
a61af66fc99e Initial load duke parents: diff changeset	102 int loop_max = MaxJavaStackTraceDepth * 2;
a61af66fc99e Initial load duke parents: diff changeset	103
a61af66fc99e Initial load duke parents: diff changeset	104
a61af66fc99e Initial load duke parents: diff changeset	105 do {
a61af66fc99e Initial load duke parents: diff changeset	106
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	107 loop_count++;
0 a61af66fc99e Initial load duke parents: diff changeset	108
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	109 // 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	110 // safe then segv'd
0 a61af66fc99e Initial load duke parents: diff changeset	111
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	112 if (loop_count > loop_max \|\| !_frame.safe_for_sender(_thread)) {
0 a61af66fc99e Initial load duke parents: diff changeset	113 _mode = at_end_mode;
a61af66fc99e Initial load duke parents: diff changeset	114 return;
a61af66fc99e Initial load duke parents: diff changeset	115 }
a61af66fc99e Initial load duke parents: diff changeset	116
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	117 _frame = _frame.sender(&_reg_map);
0 a61af66fc99e Initial load duke parents: diff changeset	118
a61af66fc99e Initial load duke parents: diff changeset	119 } while (!fill_from_frame());
a61af66fc99e Initial load duke parents: diff changeset	120 }
a61af66fc99e Initial load duke parents: diff changeset	121
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	122 // 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	123 // 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	124
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	125 static bool is_decipherable_compiled_frame(frame* fr) {
0 a61af66fc99e Initial load duke parents: diff changeset	126
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	127 assert(fr->cb() != NULL && fr->cb()->is_nmethod(), "invariant");
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	128 nmethod* nm = (nmethod*) fr->cb();
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	129 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	130
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	131 // First try and find an exact PcDesc
0 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 PcDesc* pc_desc = nm->pc_desc_at(fr->pc());
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	134
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	135 // Did we find a useful PcDesc?
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	136 if (pc_desc != NULL &&
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	137 pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) {
0 a61af66fc99e Initial load duke parents: diff changeset	138
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	139 address probe_pc = fr->pc() + 1;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	140 pc_desc = nm->pc_desc_near(probe_pc);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	141
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	142 // Now do we have a useful PcDesc?
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	143
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	144 if (pc_desc != NULL &&
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	145 pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	146 // No debug information available for this pc
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	147 // vframeStream would explode if we try and walk the frames.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	148 return false;
0 a61af66fc99e Initial load duke parents: diff changeset	149 }
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	150
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	151 // This PcDesc is useful however we must adjust the frame's pc
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	152 // so that the vframeStream lookups will use this same pc
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	153
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	154 fr->set_pc(pc_desc->real_pc(nm));
0 a61af66fc99e Initial load duke parents: diff changeset	155 }
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	156
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	157 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	158 }
a61af66fc99e Initial load duke parents: diff changeset	159
a61af66fc99e Initial load duke parents: diff changeset	160 // Determine if 'fr' is a walkable interpreted frame. Returns false
a61af66fc99e Initial load duke parents: diff changeset	161 // if it is not. method_p, and bci_p are not set when false is
a61af66fc99e Initial load duke parents: diff changeset	162 // returned. *method_p is non-NULL if frame was executing a Java
a61af66fc99e Initial load duke parents: diff changeset	163 // method. *bci_p is != -1 if a valid BCI in the Java method could
a61af66fc99e Initial load duke parents: diff changeset	164 // be found.
a61af66fc99e Initial load duke parents: diff changeset	165 // Note: this method returns true when a valid Java method is found
a61af66fc99e Initial load duke parents: diff changeset	166 // even if a valid BCI cannot be found.
a61af66fc99e Initial load duke parents: diff changeset	167
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	168 static bool is_decipherable_interpreted_frame(JavaThread* thread,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	169 frame* fr,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	170 methodOop* method_p,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	171 int* bci_p) {
0 a61af66fc99e Initial load duke parents: diff changeset	172 assert(fr->is_interpreted_frame(), "just checking");
a61af66fc99e Initial load duke parents: diff changeset	173
a61af66fc99e Initial load duke parents: diff changeset	174 // top frame is an interpreted frame
a61af66fc99e Initial load duke parents: diff changeset	175 // 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	176
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	177 // 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	178 // 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	179 // 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	180 // 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	181 // 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	182
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	183 JavaThreadState state = thread->thread_state();
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	184 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	185 state == _thread_in_vm \|\|
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	186 state == _thread_blocked );
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 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	189
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	190 // 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	191 // 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	192 // 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	193 // 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	194 // 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	195 // 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	196 // 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	197
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	198 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	199
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	200 // 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	201 // 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	202 // 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	203 // 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	204 // 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	205 // not yet valid.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	206
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	207 *method_p = method;
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 // 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	210
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	211 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	212
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	213 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	214
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	215 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	216
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	217 // 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	218 *bci_p = bci;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	219 return true;
0 a61af66fc99e Initial load duke parents: diff changeset	220 }
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	221
0 a61af66fc99e Initial load duke parents: diff changeset	222 return false;
a61af66fc99e Initial load duke parents: diff changeset	223 }
a61af66fc99e Initial load duke parents: diff changeset	224
a61af66fc99e Initial load duke parents: diff changeset	225
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	226 // 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	227 // 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	228 // (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	229 // 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	230 //
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	231 // 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	232 // 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	233 // 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	234 // 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	235 //
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	236 // The initial Java frame we find (if any) is return via initial_frame_p.
0 a61af66fc99e Initial load duke parents: diff changeset	237 //
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	238
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	239 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	240 frame* fr,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	241 frame* initial_frame_p,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	242 methodOop* method_p,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	243 int* bci_p) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	244
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	245 // 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	246 // 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	247 // 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	248 // 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	249 // caller can make the distinction.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	250
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	251 *method_p = NULL;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	252
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	253 // 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	254 // 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	255 // 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	256
0 a61af66fc99e Initial load duke parents: diff changeset	257
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	258
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	259 frame candidate = *fr;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	260
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	261 // 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	262 // 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	263 // are possible Java frames.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	264
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	265 if (fr->cb() == NULL) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	266
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	267 // 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	268 int loop_count;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	269 int loop_max = MaxJavaStackTraceDepth * 2;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	270 RegisterMap map(thread, false);
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 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	273 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	274 candidate = candidate.sender(&map);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	275 if (candidate.cb() != NULL) break;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	276 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	277 if (candidate.cb() == NULL) return false;
0 a61af66fc99e Initial load duke parents: diff changeset	278 }
a61af66fc99e Initial load duke parents: diff changeset	279
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	280 // 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	281 // We will hopefully be able to figure out something to do with it.
0 a61af66fc99e Initial load duke parents: diff changeset	282 int loop_count;
a61af66fc99e Initial load duke parents: diff changeset	283 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	284 RegisterMap map(thread, false);
0 a61af66fc99e Initial load duke parents: diff changeset	285
a61af66fc99e Initial load duke parents: diff changeset	286 for (loop_count = 0; loop_count < loop_max; loop_count++) {
a61af66fc99e Initial load duke parents: diff changeset	287
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	288 if (candidate.is_first_frame()) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	289 // 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	290 // 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	291 return false;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	292 }
0 a61af66fc99e Initial load duke parents: diff changeset	293
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	294 if (candidate.is_interpreted_frame()) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	295 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	296 *initial_frame_p = candidate;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	297 return true;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	298 }
0 a61af66fc99e Initial load duke parents: diff changeset	299
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	300 // Hopefully we got some data
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	301 return false;
0 a61af66fc99e Initial load duke parents: diff changeset	302 }
a61af66fc99e Initial load duke parents: diff changeset	303
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	304 if (candidate.cb()->is_nmethod()) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	305
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	306 nmethod* nm = (nmethod*) candidate.cb();
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	307 *method_p = nm->method();
0 a61af66fc99e Initial load duke parents: diff changeset	308
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	309 // 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	310 // 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	311 // 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	312 // not be used.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	313
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	314 *bci_p = -1;
0 a61af66fc99e Initial load duke parents: diff changeset	315
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	316 *initial_frame_p = candidate;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	317
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	318 // 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	319
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	320 if (nm->is_native_method()) return true;
0 a61af66fc99e Initial load duke parents: diff changeset	321
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	322 // 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	323 // 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	324 // a method
0 a61af66fc99e Initial load duke parents: diff changeset	325
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	326 if (!is_decipherable_compiled_frame(&candidate)) {
0 a61af66fc99e Initial load duke parents: diff changeset	327 return false;
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	328 }
0 a61af66fc99e Initial load duke parents: diff changeset	329
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	330 // 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	331 *initial_frame_p = candidate;
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 return true;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	334 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	335
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	336 // Must be some stub frame that we don't care about
0 a61af66fc99e Initial load duke parents: diff changeset	337
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	338 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	339 candidate = candidate.sender(&map);
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 // 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	342 // 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	343 // all should be there.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	344
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	345 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	346
0 a61af66fc99e Initial load duke parents: diff changeset	347 }
a61af66fc99e Initial load duke parents: diff changeset	348
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	349 return false;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	350
0 a61af66fc99e Initial load duke parents: diff changeset	351 }
a61af66fc99e Initial load duke parents: diff changeset	352
a61af66fc99e Initial load duke parents: diff changeset	353
a61af66fc99e Initial load duke parents: diff changeset	354 // call frame copied from old .h file and renamed
a61af66fc99e Initial load duke parents: diff changeset	355 typedef struct {
a61af66fc99e Initial load duke parents: diff changeset	356 jint lineno; // line number in the source file
a61af66fc99e Initial load duke parents: diff changeset	357 jmethodID method_id; // method executed in this frame
a61af66fc99e Initial load duke parents: diff changeset	358 } ASGCT_CallFrame;
a61af66fc99e Initial load duke parents: diff changeset	359
a61af66fc99e Initial load duke parents: diff changeset	360 // call trace copied from old .h file and renamed
a61af66fc99e Initial load duke parents: diff changeset	361 typedef struct {
a61af66fc99e Initial load duke parents: diff changeset	362 JNIEnv *env_id; // Env where trace was recorded
a61af66fc99e Initial load duke parents: diff changeset	363 jint num_frames; // number of frames in this trace
a61af66fc99e Initial load duke parents: diff changeset	364 ASGCT_CallFrame *frames; // frames
a61af66fc99e Initial load duke parents: diff changeset	365 } ASGCT_CallTrace;
a61af66fc99e Initial load duke parents: diff changeset	366
a61af66fc99e Initial load duke parents: diff changeset	367 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	368 ASGCT_CallTrace* trace,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	369 int depth,
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	370 frame top_frame) {
0 a61af66fc99e Initial load duke parents: diff changeset	371 NoHandleMark nhm;
a61af66fc99e Initial load duke parents: diff changeset	372
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	373 frame initial_Java_frame;
0 a61af66fc99e Initial load duke parents: diff changeset	374 methodOop method;
a61af66fc99e Initial load duke parents: diff changeset	375 int bci;
a61af66fc99e Initial load duke parents: diff changeset	376 int count;
a61af66fc99e Initial load duke parents: diff changeset	377
a61af66fc99e Initial load duke parents: diff changeset	378 count = 0;
a61af66fc99e Initial load duke parents: diff changeset	379 assert(trace->frames != NULL, "trace->frames must be non-NULL");
a61af66fc99e Initial load duke parents: diff changeset	380
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	381 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	382
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	383 // 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	384 // (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	385
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	386 if (method == NULL) return;
0 a61af66fc99e Initial load duke parents: diff changeset	387
a61af66fc99e Initial load duke parents: diff changeset	388 CollectedHeap* ch = Universe::heap();
a61af66fc99e Initial load duke parents: diff changeset	389
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	390 // 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	391 // 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	392 // use the methodOop.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	393 // 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	394 // 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	395 // 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	396 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	397 trace->num_frames = ticks_GC_active; // -2
0 a61af66fc99e Initial load duke parents: diff changeset	398 return;
a61af66fc99e Initial load duke parents: diff changeset	399 }
a61af66fc99e Initial load duke parents: diff changeset	400
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	401 // 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	402 // 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	403 // 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	404
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	405 if (!fully_decipherable) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	406 // 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	407 // 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	408 // debugging information is available.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	409 count++;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	410 trace->num_frames = count;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	411 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	412 if (!method->is_native()) {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	413 trace->frames[0].lineno = bci;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	414 } else {
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	415 trace->frames[0].lineno = -3;
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	416 }
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 (!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	419
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	420 RegisterMap map(thd, false);
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	421 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	422 }
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	423
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	424 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	425
0 a61af66fc99e Initial load duke parents: diff changeset	426 for (; !st.at_end() && count < depth; st.forte_next(), count++) {
a61af66fc99e Initial load duke parents: diff changeset	427 bci = st.bci();
a61af66fc99e Initial load duke parents: diff changeset	428 method = st.method();
a61af66fc99e Initial load duke parents: diff changeset	429
a61af66fc99e Initial load duke parents: diff changeset	430 // The method is not stored GC safe so see if GC became active
a61af66fc99e Initial load duke parents: diff changeset	431 // after we entered AsyncGetCallTrace() and before we try to
a61af66fc99e Initial load duke parents: diff changeset	432 // use the methodOop.
a61af66fc99e Initial load duke parents: diff changeset	433 // Yes, there is still a window after this check and before
a61af66fc99e Initial load duke parents: diff changeset	434 // we use methodOop below, but we can't lock out GC so that
a61af66fc99e Initial load duke parents: diff changeset	435 // has to be an acceptable risk.
a61af66fc99e Initial load duke parents: diff changeset	436 if (!ch->is_valid_method(method)) {
a61af66fc99e Initial load duke parents: diff changeset	437 // we throw away everything we've gathered in this sample since
a61af66fc99e Initial load duke parents: diff changeset	438 // 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	439 trace->num_frames = ticks_GC_active; // -2
0 a61af66fc99e Initial load duke parents: diff changeset	440 return;
a61af66fc99e Initial load duke parents: diff changeset	441 }
a61af66fc99e Initial load duke parents: diff changeset	442
a61af66fc99e Initial load duke parents: diff changeset	443 trace->frames[count].method_id = method->find_jmethod_id_or_null();
a61af66fc99e Initial load duke parents: diff changeset	444 if (!method->is_native()) {
a61af66fc99e Initial load duke parents: diff changeset	445 trace->frames[count].lineno = bci;
a61af66fc99e Initial load duke parents: diff changeset	446 } else {
a61af66fc99e Initial load duke parents: diff changeset	447 trace->frames[count].lineno = -3;
a61af66fc99e Initial load duke parents: diff changeset	448 }
a61af66fc99e Initial load duke parents: diff changeset	449 }
a61af66fc99e Initial load duke parents: diff changeset	450 trace->num_frames = count;
a61af66fc99e Initial load duke parents: diff changeset	451 return;
a61af66fc99e Initial load duke parents: diff changeset	452 }
a61af66fc99e Initial load duke parents: diff changeset	453
a61af66fc99e Initial load duke parents: diff changeset	454
a61af66fc99e Initial load duke parents: diff changeset	455 // Forte Analyzer AsyncGetCallTrace() entry point. Currently supported
a61af66fc99e Initial load duke parents: diff changeset	456 // on Linux X86, Solaris SPARC and Solaris X86.
a61af66fc99e Initial load duke parents: diff changeset	457 //
a61af66fc99e Initial load duke parents: diff changeset	458 // Async-safe version of GetCallTrace being called from a signal handler
a61af66fc99e Initial load duke parents: diff changeset	459 // when a LWP gets interrupted by SIGPROF but the stack traces are filled
a61af66fc99e Initial load duke parents: diff changeset	460 // with different content (see below).
a61af66fc99e Initial load duke parents: diff changeset	461 //
a61af66fc99e Initial load duke parents: diff changeset	462 // This function must only be called when JVM/TI
a61af66fc99e Initial load duke parents: diff changeset	463 // CLASS_LOAD events have been enabled since agent startup. The enabled
a61af66fc99e Initial load duke parents: diff changeset	464 // event will cause the jmethodIDs to be allocated at class load time.
a61af66fc99e Initial load duke parents: diff changeset	465 // The jmethodIDs cannot be allocated in a signal handler because locks
a61af66fc99e Initial load duke parents: diff changeset	466 // cannot be grabbed in a signal handler safely.
a61af66fc99e Initial load duke parents: diff changeset	467 //
a61af66fc99e Initial load duke parents: diff changeset	468 // void (AsyncGetCallTrace)(ASGCT_CallTrace trace, jint depth, void* ucontext)
a61af66fc99e Initial load duke parents: diff changeset	469 //
a61af66fc99e Initial load duke parents: diff changeset	470 // Called by the profiler to obtain the current method call stack trace for
a61af66fc99e Initial load duke parents: diff changeset	471 // a given thread. The thread is identified by the env_id field in the
a61af66fc99e Initial load duke parents: diff changeset	472 // ASGCT_CallTrace structure. The profiler agent should allocate a ASGCT_CallTrace
a61af66fc99e Initial load duke parents: diff changeset	473 // structure with enough memory for the requested stack depth. The VM fills in
a61af66fc99e Initial load duke parents: diff changeset	474 // the frames buffer and the num_frames field.
a61af66fc99e Initial load duke parents: diff changeset	475 //
a61af66fc99e Initial load duke parents: diff changeset	476 // Arguments:
a61af66fc99e Initial load duke parents: diff changeset	477 //
a61af66fc99e Initial load duke parents: diff changeset	478 // trace - trace data structure to be filled by the VM.
a61af66fc99e Initial load duke parents: diff changeset	479 // depth - depth of the call stack trace.
a61af66fc99e Initial load duke parents: diff changeset	480 // ucontext - ucontext_t of the LWP
a61af66fc99e Initial load duke parents: diff changeset	481 //
a61af66fc99e Initial load duke parents: diff changeset	482 // ASGCT_CallTrace:
a61af66fc99e Initial load duke parents: diff changeset	483 // typedef struct {
a61af66fc99e Initial load duke parents: diff changeset	484 // JNIEnv *env_id;
a61af66fc99e Initial load duke parents: diff changeset	485 // jint num_frames;
a61af66fc99e Initial load duke parents: diff changeset	486 // ASGCT_CallFrame *frames;
a61af66fc99e Initial load duke parents: diff changeset	487 // } ASGCT_CallTrace;
a61af66fc99e Initial load duke parents: diff changeset	488 //
a61af66fc99e Initial load duke parents: diff changeset	489 // Fields:
a61af66fc99e Initial load duke parents: diff changeset	490 // env_id - ID of thread which executed this trace.
a61af66fc99e Initial load duke parents: diff changeset	491 // num_frames - number of frames in the trace.
a61af66fc99e Initial load duke parents: diff changeset	492 // (< 0 indicates the frame is not walkable).
a61af66fc99e Initial load duke parents: diff changeset	493 // frames - the ASGCT_CallFrames that make up this trace. Callee followed by callers.
a61af66fc99e Initial load duke parents: diff changeset	494 //
a61af66fc99e Initial load duke parents: diff changeset	495 // ASGCT_CallFrame:
a61af66fc99e Initial load duke parents: diff changeset	496 // typedef struct {
a61af66fc99e Initial load duke parents: diff changeset	497 // jint lineno;
a61af66fc99e Initial load duke parents: diff changeset	498 // jmethodID method_id;
a61af66fc99e Initial load duke parents: diff changeset	499 // } ASGCT_CallFrame;
a61af66fc99e Initial load duke parents: diff changeset	500 //
a61af66fc99e Initial load duke parents: diff changeset	501 // Fields:
a61af66fc99e Initial load duke parents: diff changeset	502 // 1) For Java frame (interpreted and compiled),
a61af66fc99e Initial load duke parents: diff changeset	503 // lineno - bci of the method being executed or -1 if bci is not available
a61af66fc99e Initial load duke parents: diff changeset	504 // method_id - jmethodID of the method being executed
a61af66fc99e Initial load duke parents: diff changeset	505 // 2) For native method
a61af66fc99e Initial load duke parents: diff changeset	506 // lineno - (-3)
a61af66fc99e Initial load duke parents: diff changeset	507 // method_id - jmethodID of the method being executed
a61af66fc99e Initial load duke parents: diff changeset	508
a61af66fc99e Initial load duke parents: diff changeset	509 extern "C" {
a61af66fc99e Initial load duke parents: diff changeset	510 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	511
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	512 // 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	513 // 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	514 // code would be important.
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	515 #if 0
0 a61af66fc99e Initial load duke parents: diff changeset	516 if (SafepointSynchronize::is_synchronizing()) {
a61af66fc99e Initial load duke parents: diff changeset	517 // The safepoint mechanism is trying to synchronize all the threads.
a61af66fc99e Initial load duke parents: diff changeset	518 // Since this can involve thread suspension, it is not safe for us
a61af66fc99e Initial load duke parents: diff changeset	519 // to be here. We can reduce the deadlock risk window by quickly
a61af66fc99e Initial load duke parents: diff changeset	520 // returning to the SIGPROF handler. However, it is still possible
a61af66fc99e Initial load duke parents: diff changeset	521 // for VMThread to catch us here or in the SIGPROF handler. If we
a61af66fc99e Initial load duke parents: diff changeset	522 // are suspended while holding a resource and another thread blocks
a61af66fc99e Initial load duke parents: diff changeset	523 // on that resource in the SIGPROF handler, then we will have a
a61af66fc99e Initial load duke parents: diff changeset	524 // 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	525 trace->num_frames = ticks_safepoint; // -10
0 a61af66fc99e Initial load duke parents: diff changeset	526 return;
a61af66fc99e Initial load duke parents: diff changeset	527 }
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	528 #endif
0 a61af66fc99e Initial load duke parents: diff changeset	529
a61af66fc99e Initial load duke parents: diff changeset	530 JavaThread* thread;
a61af66fc99e Initial load duke parents: diff changeset	531
a61af66fc99e Initial load duke parents: diff changeset	532 if (trace->env_id == NULL \|\|
a61af66fc99e Initial load duke parents: diff changeset	533 (thread = JavaThread::thread_from_jni_environment(trace->env_id)) == NULL \|\|
a61af66fc99e Initial load duke parents: diff changeset	534 thread->is_exiting()) {
a61af66fc99e Initial load duke parents: diff changeset	535
a61af66fc99e Initial load duke parents: diff changeset	536 // 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	537 trace->num_frames = ticks_thread_exit; // -8
0 a61af66fc99e Initial load duke parents: diff changeset	538 return;
a61af66fc99e Initial load duke parents: diff changeset	539 }
a61af66fc99e Initial load duke parents: diff changeset	540
a61af66fc99e Initial load duke parents: diff changeset	541 if (thread->in_deopt_handler()) {
a61af66fc99e Initial load duke parents: diff changeset	542 // 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	543 trace->num_frames = ticks_deopt; // -9
0 a61af66fc99e Initial load duke parents: diff changeset	544 return;
a61af66fc99e Initial load duke parents: diff changeset	545 }
a61af66fc99e Initial load duke parents: diff changeset	546
a61af66fc99e Initial load duke parents: diff changeset	547 assert(JavaThread::current() == thread,
a61af66fc99e Initial load duke parents: diff changeset	548 "AsyncGetCallTrace must be called by the current interrupted thread");
a61af66fc99e Initial load duke parents: diff changeset	549
a61af66fc99e Initial load duke parents: diff changeset	550 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	551 trace->num_frames = ticks_no_class_load; // -1
0 a61af66fc99e Initial load duke parents: diff changeset	552 return;
a61af66fc99e Initial load duke parents: diff changeset	553 }
a61af66fc99e Initial load duke parents: diff changeset	554
a61af66fc99e Initial load duke parents: diff changeset	555 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	556 trace->num_frames = ticks_GC_active; // -2
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 switch (thread->thread_state()) {
a61af66fc99e Initial load duke parents: diff changeset	561 case _thread_new:
a61af66fc99e Initial load duke parents: diff changeset	562 case _thread_uninitialized:
a61af66fc99e Initial load duke parents: diff changeset	563 case _thread_new_trans:
a61af66fc99e Initial load duke parents: diff changeset	564 // We found the thread on the threads list above, but it is too
a61af66fc99e Initial load duke parents: diff changeset	565 // young to be useful so return that there are no Java frames.
a61af66fc99e Initial load duke parents: diff changeset	566 trace->num_frames = 0;
a61af66fc99e Initial load duke parents: diff changeset	567 break;
a61af66fc99e Initial load duke parents: diff changeset	568 case _thread_in_native:
a61af66fc99e Initial load duke parents: diff changeset	569 case _thread_in_native_trans:
a61af66fc99e Initial load duke parents: diff changeset	570 case _thread_blocked:
a61af66fc99e Initial load duke parents: diff changeset	571 case _thread_blocked_trans:
a61af66fc99e Initial load duke parents: diff changeset	572 case _thread_in_vm:
a61af66fc99e Initial load duke parents: diff changeset	573 case _thread_in_vm_trans:
a61af66fc99e Initial load duke parents: diff changeset	574 {
a61af66fc99e Initial load duke parents: diff changeset	575 frame fr;
a61af66fc99e Initial load duke parents: diff changeset	576
a61af66fc99e Initial load duke parents: diff changeset	577 // param isInJava == false - indicate we aren't in Java code
a61af66fc99e Initial load duke parents: diff changeset	578 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	579 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	580 } else {
0 a61af66fc99e Initial load duke parents: diff changeset	581 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	582 trace->num_frames = 0; // No Java frames
0 a61af66fc99e Initial load duke parents: diff changeset	583 } else {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	584 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	585 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	586
93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	587 // 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	588 // 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	589 // 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	590 // 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	591 // 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	592 // 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	593
0 a61af66fc99e Initial load duke parents: diff changeset	594 }
a61af66fc99e Initial load duke parents: diff changeset	595 }
a61af66fc99e Initial load duke parents: diff changeset	596 }
a61af66fc99e Initial load duke parents: diff changeset	597 break;
a61af66fc99e Initial load duke parents: diff changeset	598 case _thread_in_Java:
a61af66fc99e Initial load duke parents: diff changeset	599 case _thread_in_Java_trans:
a61af66fc99e Initial load duke parents: diff changeset	600 {
a61af66fc99e Initial load duke parents: diff changeset	601 frame fr;
a61af66fc99e Initial load duke parents: diff changeset	602
a61af66fc99e Initial load duke parents: diff changeset	603 // param isInJava == true - indicate we are in Java code
a61af66fc99e Initial load duke parents: diff changeset	604 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	605 trace->num_frames = ticks_unknown_Java; // -5 unknown frame
0 a61af66fc99e Initial load duke parents: diff changeset	606 } else {
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	607 trace->num_frames = ticks_not_walkable_Java; // -6, non walkable frame by default
0 a61af66fc99e Initial load duke parents: diff changeset	608 forte_fill_call_trace_given_top(thread, trace, depth, fr);
a61af66fc99e Initial load duke parents: diff changeset	609 }
a61af66fc99e Initial load duke parents: diff changeset	610 }
a61af66fc99e Initial load duke parents: diff changeset	611 break;
a61af66fc99e Initial load duke parents: diff changeset	612 default:
a61af66fc99e Initial load duke parents: diff changeset	613 // Unknown thread state
107 93b6525e3b82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on sgoldman parents: 0 diff changeset	614 trace->num_frames = ticks_unknown_state; // -7
0 a61af66fc99e Initial load duke parents: diff changeset	615 break;
a61af66fc99e Initial load duke parents: diff changeset	616 }
a61af66fc99e Initial load duke parents: diff changeset	617 }
a61af66fc99e Initial load duke parents: diff changeset	618
a61af66fc99e Initial load duke parents: diff changeset	619
a61af66fc99e Initial load duke parents: diff changeset	620 #ifndef _WINDOWS
a61af66fc99e Initial load duke parents: diff changeset	621 // Support for the Forte(TM) Peformance Tools collector.
a61af66fc99e Initial load duke parents: diff changeset	622 //
a61af66fc99e Initial load duke parents: diff changeset	623 // The method prototype is derived from libcollector.h. For more
a61af66fc99e Initial load duke parents: diff changeset	624 // information, please see the libcollect man page.
a61af66fc99e Initial load duke parents: diff changeset	625
a61af66fc99e Initial load duke parents: diff changeset	626 // Method to let libcollector know about a dynamically loaded function.
a61af66fc99e Initial load duke parents: diff changeset	627 // Because it is weakly bound, the calls become NOP's when the library
a61af66fc99e Initial load duke parents: diff changeset	628 // isn't present.
a61af66fc99e Initial load duke parents: diff changeset	629 void collector_func_load(char* name,
a61af66fc99e Initial load duke parents: diff changeset	630 void* null_argument_1,
a61af66fc99e Initial load duke parents: diff changeset	631 void* null_argument_2,
a61af66fc99e Initial load duke parents: diff changeset	632 void *vaddr,
a61af66fc99e Initial load duke parents: diff changeset	633 int size,
a61af66fc99e Initial load duke parents: diff changeset	634 int zero_argument,
a61af66fc99e Initial load duke parents: diff changeset	635 void* null_argument_3);
a61af66fc99e Initial load duke parents: diff changeset	636 #pragma weak collector_func_load
a61af66fc99e Initial load duke parents: diff changeset	637 #define collector_func_load(x0,x1,x2,x3,x4,x5,x6) \
a61af66fc99e Initial load duke parents: diff changeset	638 ( collector_func_load ? collector_func_load(x0,x1,x2,x3,x4,x5,x6),0 : 0 )
a61af66fc99e Initial load duke parents: diff changeset	639 #endif // !_WINDOWS
a61af66fc99e Initial load duke parents: diff changeset	640
a61af66fc99e Initial load duke parents: diff changeset	641 } // end extern "C"
a61af66fc99e Initial load duke parents: diff changeset	642 #endif // !IA64
a61af66fc99e Initial load duke parents: diff changeset	643
a61af66fc99e Initial load duke parents: diff changeset	644 void Forte::register_stub(const char* name, address start, address end) {
a61af66fc99e Initial load duke parents: diff changeset	645 #if !defined(_WINDOWS) && !defined(IA64)
a61af66fc99e Initial load duke parents: diff changeset	646 assert(pointer_delta(end, start, sizeof(jbyte)) < INT_MAX,
a61af66fc99e Initial load duke parents: diff changeset	647 "Code size exceeds maximum range")
a61af66fc99e Initial load duke parents: diff changeset	648
a61af66fc99e Initial load duke parents: diff changeset	649 collector_func_load((char*)name, NULL, NULL, start,
a61af66fc99e Initial load duke parents: diff changeset	650 pointer_delta(end, start, sizeof(jbyte)), 0, NULL);
a61af66fc99e Initial load duke parents: diff changeset	651 #endif // !_WINDOWS && !IA64
a61af66fc99e Initial load duke parents: diff changeset	652 }

Mercurial > hg > truffle

annotate src/share/vm/prims/forte.cpp @ 614:3db67f76d308