Mercurial > hg > truffle
annotate src/share/vm/runtime/deoptimization.hpp @ 16535:ada0a7729b6f
Truffle: introduce debug option to print the stack trace when transferring to the interpreter
| author | Andreas Woess <andreas.woess@jku.at> |
|---|---|
| date | Wed, 16 Jul 2014 15:18:48 +0200 |
| parents | 36e1a11a72b3 |
| children | 52b4284cb496 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1206
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1206
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:
1206
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_RUNTIME_DEOPTIMIZATION_HPP |
| 26 #define SHARE_VM_RUNTIME_DEOPTIMIZATION_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "runtime/frame.inline.hpp" | |
| 30 | |
| 0 | 31 class ProfileData; |
| 32 class vframeArray; | |
| 33 class MonitorValue; | |
| 34 class ObjectValue; | |
| 35 | |
| 36 class Deoptimization : AllStatic { | |
| 3939 | 37 friend class VMStructs; |
| 38 | |
| 0 | 39 public: |
| 40 // What condition caused the deoptimization? | |
| 41 enum DeoptReason { | |
| 42 Reason_many = -1, // indicates presence of several reasons | |
| 43 Reason_none = 0, // indicates absence of a relevant deopt. | |
|
5114
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
44 // Next 7 reasons are recorded per bytecode in DataLayout::trap_bits. |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
45 // This is more complicated for Graal as Graal may deoptimize to *some* bytecode before the |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
46 // bytecode that actually caused the deopt (with inlining, Graal may even deoptimize to a |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
47 // bytecode in another method): |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
48 // - bytecode y in method b() causes deopt |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
49 // - Graal deoptimizes to bytecode x in method a() |
|
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
50 // -> the deopt reason will be recorded for method a() at bytecode x |
| 0 | 51 Reason_null_check, // saw unexpected null or zero divisor (@bci) |
| 52 Reason_null_assert, // saw unexpected non-null or non-zero (@bci) | |
| 53 Reason_range_check, // saw unexpected array index (@bci) | |
| 54 Reason_class_check, // saw unexpected object class (@bci) | |
| 55 Reason_array_check, // saw unexpected array class (aastore @bci) | |
| 56 Reason_intrinsic, // saw unexpected operand to intrinsic (@bci) | |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1172
diff
changeset
|
57 Reason_bimorphic, // saw unexpected object class in bimorphic inlining (@bci) |
|
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1172
diff
changeset
|
58 |
|
7154
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
59 #ifdef GRAAL |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
60 Reason_unreached0 = Reason_null_assert, |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
61 Reason_type_checked_inlining = Reason_intrinsic, |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
62 Reason_optimized_type_check = Reason_bimorphic, |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
63 #endif |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
64 |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
65 // recorded per method |
| 0 | 66 Reason_unloaded, // unloaded class or constant pool entry |
| 67 Reason_uninitialized, // bad class state (uninitialized) | |
| 68 Reason_unreached, // code is not reached, compiler | |
| 69 Reason_unhandled, // arbitrary compiler limitation | |
| 70 Reason_constraint, // arbitrary runtime constraint violated | |
| 71 Reason_div0_check, // a null_check due to division by zero | |
| 72 Reason_age, // nmethod too old; tier threshold reached | |
| 1172 | 73 Reason_predicate, // compiler generated predicate failed |
| 3345 | 74 Reason_loop_limit_check, // compiler generated loop limits check failed |
|
13155
1dd9aa5a9ee5
Deoptimization reason for failed aliasing assumptions.
Roland Schatz <roland.schatz@oracle.com>
parents:
13100
diff
changeset
|
75 #ifdef GRAAL |
|
1dd9aa5a9ee5
Deoptimization reason for failed aliasing assumptions.
Roland Schatz <roland.schatz@oracle.com>
parents:
13100
diff
changeset
|
76 Reason_aliasing, // optimistic assumption about aliasing failed |
|
16535
ada0a7729b6f
Truffle: introduce debug option to print the stack trace when transferring to the interpreter
Andreas Woess <andreas.woess@jku.at>
parents:
15063
diff
changeset
|
77 Reason_transfer_to_interpreter, // explicit transferToInterpreter() |
|
13155
1dd9aa5a9ee5
Deoptimization reason for failed aliasing assumptions.
Roland Schatz <roland.schatz@oracle.com>
parents:
13100
diff
changeset
|
78 #endif |
| 0 | 79 Reason_LIMIT, |
|
7154
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
80 |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
81 #ifdef GRAAL |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
82 Reason_not_compiled_exception_handler = Reason_unhandled, |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
83 Reason_unresolved = Reason_uninitialized, |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
84 Reason_jsr_mismatch = Reason_age, |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
85 #endif |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
6948
diff
changeset
|
86 |
| 0 | 87 // Note: Keep this enum in sync. with _trap_reason_name. |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1172
diff
changeset
|
88 Reason_RECORDED_LIMIT = Reason_bimorphic // some are not recorded per bc |
| 0 | 89 // Note: Reason_RECORDED_LIMIT should be < 8 to fit into 3 bits of |
| 90 // DataLayout::trap_bits. This dependency is enforced indirectly | |
| 91 // via asserts, to avoid excessive direct header-to-header dependencies. | |
| 92 // See Deoptimization::trap_state_reason and class DataLayout. | |
| 93 }; | |
| 94 | |
| 95 // What action must be taken by the runtime? | |
| 96 enum DeoptAction { | |
| 97 Action_none, // just interpret, do not invalidate nmethod | |
| 98 Action_maybe_recompile, // recompile the nmethod; need not invalidate | |
| 99 Action_reinterpret, // invalidate the nmethod, reset IC, maybe recompile | |
| 100 Action_make_not_entrant, // invalidate the nmethod, recompile (probably) | |
| 101 Action_make_not_compilable, // invalidate the nmethod and do not compile | |
| 102 Action_LIMIT | |
| 103 // Note: Keep this enum in sync. with _trap_action_name. | |
| 104 }; | |
| 105 | |
| 106 enum { | |
| 107 _action_bits = 3, | |
| 3345 | 108 _reason_bits = 5, |
|
13641
5a9afbf72714
Add a speculation oop for uncommon trap deoptimization. Save it in the SpeculationLog during deoptimization.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13216
diff
changeset
|
109 _debug_id_bits = 23, |
| 0 | 110 _action_shift = 0, |
| 111 _reason_shift = _action_shift+_action_bits, | |
|
13641
5a9afbf72714
Add a speculation oop for uncommon trap deoptimization. Save it in the SpeculationLog during deoptimization.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13216
diff
changeset
|
112 _debug_id_shift = _reason_shift+_reason_bits, |
| 0 | 113 BC_CASE_LIMIT = PRODUCT_ONLY(1) NOT_PRODUCT(4) // for _deoptimization_hist |
| 114 }; | |
| 115 | |
| 116 enum UnpackType { | |
| 117 Unpack_deopt = 0, // normal deoptimization, use pc computed in unpack_vframe_on_stack | |
| 118 Unpack_exception = 1, // exception is pending | |
| 119 Unpack_uncommon_trap = 2, // redo last byte code (C2 only) | |
| 120 Unpack_reexecute = 3 // reexecute bytecode (C1 only) | |
| 121 }; | |
| 122 | |
| 123 // Checks all compiled methods. Invalid methods are deleted and | |
| 124 // corresponding activations are deoptimized. | |
| 125 static int deoptimize_dependents(); | |
| 126 | |
| 127 // Deoptimizes a frame lazily. nmethod gets patched deopt happens on return to the frame | |
| 128 static void deoptimize(JavaThread* thread, frame fr, RegisterMap *reg_map); | |
|
5110
0ebca2e35ca5
more preparations for disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4137
diff
changeset
|
129 static void deoptimize(JavaThread* thread, frame fr, RegisterMap *reg_map, DeoptReason reason); |
| 0 | 130 |
| 131 private: | |
| 132 // Does the actual work for deoptimizing a single frame | |
|
5110
0ebca2e35ca5
more preparations for disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4137
diff
changeset
|
133 static void deoptimize_single_frame(JavaThread* thread, frame fr, DeoptReason reason); |
| 0 | 134 |
| 135 // Helper function to revoke biases of all monitors in frame if UseBiasedLocking | |
| 136 // is enabled | |
| 137 static void revoke_biases_of_monitors(JavaThread* thread, frame fr, RegisterMap* map); | |
| 138 // Helper function to revoke biases of all monitors in frames | |
| 139 // executing in a particular CodeBlob if UseBiasedLocking is enabled | |
| 140 static void revoke_biases_of_monitors(CodeBlob* cb); | |
| 141 | |
|
8151
b8f261ba79c6
Minimize diff to plain HotSpot version.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
7154
diff
changeset
|
142 #if defined(COMPILER2) || defined(GRAAL) |
|
15063
36e1a11a72b3
new StackIntrospection interface to allow access to stack contents
Lukas Stadler <lukas.stadler@oracle.com>
parents:
14909
diff
changeset
|
143 GRAAL_ONLY(public:) |
|
36e1a11a72b3
new StackIntrospection interface to allow access to stack contents
Lukas Stadler <lukas.stadler@oracle.com>
parents:
14909
diff
changeset
|
144 |
| 0 | 145 // Support for restoring non-escaping objects |
| 146 static bool realloc_objects(JavaThread* thread, frame* fr, GrowableArray<ScopeValue*>* objects, TRAPS); | |
| 147 static void reassign_type_array_elements(frame* fr, RegisterMap* reg_map, ObjectValue* sv, typeArrayOop obj, BasicType type); | |
| 148 static void reassign_object_array_elements(frame* fr, RegisterMap* reg_map, ObjectValue* sv, objArrayOop obj); | |
| 149 static void reassign_fields(frame* fr, RegisterMap* reg_map, GrowableArray<ScopeValue*>* objects); | |
|
83
d3cd40645d0d
6681646: Relocking of a scalar replaced object during deoptimization is broken
kvn
parents:
0
diff
changeset
|
150 static void relock_objects(GrowableArray<MonitorInfo*>* monitors, JavaThread* thread); |
| 0 | 151 NOT_PRODUCT(static void print_objects(GrowableArray<ScopeValue*>* objects);) |
|
8151
b8f261ba79c6
Minimize diff to plain HotSpot version.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
7154
diff
changeset
|
152 #endif // COMPILER2 || GRAAL |
| 0 | 153 |
| 154 public: | |
| 155 static vframeArray* create_vframeArray(JavaThread* thread, frame fr, RegisterMap *reg_map, GrowableArray<compiledVFrame*>* chunk); | |
| 156 | |
| 157 // Interface used for unpacking deoptimized frames | |
| 158 | |
| 159 // UnrollBlock is returned by fetch_unroll_info() to the deoptimization handler (blob). | |
| 160 // This is only a CheapObj to ease debugging after a deopt failure | |
| 6197 | 161 class UnrollBlock : public CHeapObj<mtCompiler> { |
|
13100
df7fa4734c44
make Deoptimization::UnrollBlock visible to vmStructs
twisti
parents:
12757
diff
changeset
|
162 friend class VMStructs; |
| 0 | 163 private: |
| 164 int _size_of_deoptimized_frame; // Size, in bytes, of current deoptimized frame | |
| 165 int _caller_adjustment; // Adjustment, in bytes, to caller's SP by initial interpreted frame | |
| 166 int _number_of_frames; // Number frames to unroll | |
| 167 int _total_frame_sizes; // Total of number*sizes frames | |
| 168 intptr_t* _frame_sizes; // Array of frame sizes, in bytes, for unrolling the stack | |
| 169 address* _frame_pcs; // Array of frame pc's, in bytes, for unrolling the stack | |
| 170 intptr_t* _register_block; // Block for storing callee-saved registers. | |
| 171 BasicType _return_type; // Tells if we have to restore double or long return value | |
|
3931
5432047c7db7
7087445: Improve platform independence of JSR292 shared code
bdelsart
parents:
3369
diff
changeset
|
172 intptr_t _initial_info; // Platform dependent data for the sender frame (was FP on x86) |
|
3369
3d2ab563047a
7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
never
parents:
3345
diff
changeset
|
173 int _caller_actual_parameters; // The number of actual arguments at the |
|
3d2ab563047a
7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
never
parents:
3345
diff
changeset
|
174 // interpreted caller of the deoptimized frame |
|
3d2ab563047a
7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
never
parents:
3345
diff
changeset
|
175 |
| 0 | 176 // The following fields are used as temps during the unpacking phase |
| 177 // (which is tight on registers, especially on x86). They really ought | |
| 178 // to be PD variables but that involves moving this class into its own | |
| 179 // file to use the pd include mechanism. Maybe in a later cleanup ... | |
| 180 intptr_t _counter_temp; // SHOULD BE PD VARIABLE (x86 frame count temp) | |
| 181 intptr_t _unpack_kind; // SHOULD BE PD VARIABLE (x86 unpack kind) | |
| 182 intptr_t _sender_sp_temp; // SHOULD BE PD VARIABLE (x86 sender_sp) | |
| 183 public: | |
| 184 // Constructor | |
| 185 UnrollBlock(int size_of_deoptimized_frame, | |
| 186 int caller_adjustment, | |
|
3369
3d2ab563047a
7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
never
parents:
3345
diff
changeset
|
187 int caller_actual_parameters, |
| 0 | 188 int number_of_frames, |
| 189 intptr_t* frame_sizes, | |
| 190 address* frames_pcs, | |
| 191 BasicType return_type); | |
| 192 ~UnrollBlock(); | |
| 193 | |
| 194 // Returns where a register is located. | |
| 195 intptr_t* value_addr_at(int register_number) const; | |
| 196 | |
| 197 // Accessors | |
| 198 intptr_t* frame_sizes() const { return _frame_sizes; } | |
| 199 int number_of_frames() const { return _number_of_frames; } | |
| 200 address* frame_pcs() const { return _frame_pcs ; } | |
| 201 | |
| 202 // Returns the total size of frames | |
| 203 int size_of_frames() const; | |
| 204 | |
|
3931
5432047c7db7
7087445: Improve platform independence of JSR292 shared code
bdelsart
parents:
3369
diff
changeset
|
205 void set_initial_info(intptr_t info) { _initial_info = info; } |
|
2338
4f148718983e
7025485: leverage shared x86-only deoptimization code
bdelsart
parents:
1972
diff
changeset
|
206 |
|
3369
3d2ab563047a
7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
never
parents:
3345
diff
changeset
|
207 int caller_actual_parameters() const { return _caller_actual_parameters; } |
|
3d2ab563047a
7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
never
parents:
3345
diff
changeset
|
208 |
| 0 | 209 // Accessors used by the code generator for the unpack stub. |
| 210 static int size_of_deoptimized_frame_offset_in_bytes() { return offset_of(UnrollBlock, _size_of_deoptimized_frame); } | |
| 211 static int caller_adjustment_offset_in_bytes() { return offset_of(UnrollBlock, _caller_adjustment); } | |
| 212 static int number_of_frames_offset_in_bytes() { return offset_of(UnrollBlock, _number_of_frames); } | |
| 213 static int frame_sizes_offset_in_bytes() { return offset_of(UnrollBlock, _frame_sizes); } | |
| 214 static int total_frame_sizes_offset_in_bytes() { return offset_of(UnrollBlock, _total_frame_sizes); } | |
| 215 static int frame_pcs_offset_in_bytes() { return offset_of(UnrollBlock, _frame_pcs); } | |
| 216 static int register_block_offset_in_bytes() { return offset_of(UnrollBlock, _register_block); } | |
| 217 static int return_type_offset_in_bytes() { return offset_of(UnrollBlock, _return_type); } | |
| 218 static int counter_temp_offset_in_bytes() { return offset_of(UnrollBlock, _counter_temp); } | |
|
3931
5432047c7db7
7087445: Improve platform independence of JSR292 shared code
bdelsart
parents:
3369
diff
changeset
|
219 static int initial_info_offset_in_bytes() { return offset_of(UnrollBlock, _initial_info); } |
| 0 | 220 static int unpack_kind_offset_in_bytes() { return offset_of(UnrollBlock, _unpack_kind); } |
| 221 static int sender_sp_temp_offset_in_bytes() { return offset_of(UnrollBlock, _sender_sp_temp); } | |
| 222 | |
| 223 BasicType return_type() const { return _return_type; } | |
| 224 void print(); | |
| 225 }; | |
| 226 | |
| 227 //** Returns an UnrollBlock continuing information | |
| 228 // how to make room for the resulting interpreter frames. | |
| 229 // Called by assembly stub after execution has returned to | |
| 230 // deoptimized frame. | |
| 231 // @argument thread. Thread where stub_frame resides. | |
| 232 // @see OptoRuntime::deoptimization_fetch_unroll_info_C | |
| 233 static UnrollBlock* fetch_unroll_info(JavaThread* thread); | |
| 234 | |
| 235 //** Unpacks vframeArray onto execution stack | |
| 236 // Called by assembly stub after execution has returned to | |
| 237 // deoptimized frame and after the stack unrolling. | |
| 238 // @argument thread. Thread where stub_frame resides. | |
| 14909 | 239 // @argument exec_mode. Determines how execution should be continuted in top frame. |
| 0 | 240 // 0 means continue after current byte code |
| 241 // 1 means exception has happened, handle exception | |
| 242 // 2 means reexecute current bytecode (for uncommon traps). | |
| 243 // @see OptoRuntime::deoptimization_unpack_frames_C | |
| 244 // Return BasicType of call return type, if any | |
| 245 static BasicType unpack_frames(JavaThread* thread, int exec_mode); | |
| 246 | |
| 247 // Cleans up deoptimization bits on thread after unpacking or in the | |
| 248 // case of an exception. | |
| 249 static void cleanup_deopt_info(JavaThread *thread, | |
| 250 vframeArray * array); | |
| 251 | |
| 252 // Restores callee saved values from deoptimized frame into oldest interpreter frame | |
| 253 // so caller of the deoptimized frame will get back the values it expects. | |
| 254 static void unwind_callee_save_values(frame* f, vframeArray* vframe_array); | |
| 255 | |
| 256 //** Performs an uncommon trap for compiled code. | |
| 257 // The top most compiler frame is converted into interpreter frames | |
| 258 static UnrollBlock* uncommon_trap(JavaThread* thread, jint unloaded_class_index); | |
| 259 // Helper routine that enters the VM and may block | |
| 260 static void uncommon_trap_inner(JavaThread* thread, jint unloaded_class_index); | |
| 261 | |
| 262 //** Deoptimizes the frame identified by id. | |
| 263 // Only called from VMDeoptimizeFrame | |
| 264 // @argument thread. Thread where stub_frame resides. | |
| 265 // @argument id. id of frame that should be deoptimized. | |
|
5110
0ebca2e35ca5
more preparations for disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4137
diff
changeset
|
266 static void deoptimize_frame_internal(JavaThread* thread, intptr_t* id, DeoptReason reason); |
|
1905
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1783
diff
changeset
|
267 |
|
5110
0ebca2e35ca5
more preparations for disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4137
diff
changeset
|
268 // if thread is not the current thread then execute |
|
1905
ce6848d0666d
6968367: can_post_on_exceptions is still using VM_DeoptimizeFrame in some places
never
parents:
1783
diff
changeset
|
269 // VM_DeoptimizeFrame otherwise deoptimize directly. |
|
5110
0ebca2e35ca5
more preparations for disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4137
diff
changeset
|
270 static void deoptimize_frame(JavaThread* thread, intptr_t* id, DeoptReason reason); |
| 0 | 271 static void deoptimize_frame(JavaThread* thread, intptr_t* id); |
| 272 | |
| 273 // Statistics | |
| 274 static void gather_statistics(DeoptReason reason, DeoptAction action, | |
| 275 Bytecodes::Code bc = Bytecodes::_illegal); | |
| 276 static void print_statistics(); | |
| 277 | |
| 278 // How much room to adjust the last frame's SP by, to make space for | |
| 279 // the callee's interpreter frame (which expects locals to be next to | |
| 280 // incoming arguments) | |
| 281 static int last_frame_adjust(int callee_parameters, int callee_locals); | |
| 282 | |
| 283 // trap_request codes | |
| 284 static DeoptReason trap_request_reason(int trap_request) { | |
| 285 if (trap_request < 0) | |
| 286 return (DeoptReason) | |
| 287 ((~(trap_request) >> _reason_shift) & right_n_bits(_reason_bits)); | |
| 288 else | |
| 289 // standard reason for unloaded CP entry | |
| 290 return Reason_unloaded; | |
| 291 } | |
| 292 static DeoptAction trap_request_action(int trap_request) { | |
| 293 if (trap_request < 0) | |
| 294 return (DeoptAction) | |
| 295 ((~(trap_request) >> _action_shift) & right_n_bits(_action_bits)); | |
| 296 else | |
| 297 // standard action for unloaded CP entry | |
| 298 return _unloaded_action; | |
| 299 } | |
|
13857
a9604b40f5e7
On HotSpot, debug_id should be an int, not a short
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13641
diff
changeset
|
300 static int trap_request_debug_id(int trap_request) { |
|
12699
38b84d5a66fd
Start passing down a 'speculation id' to deoptimizations.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12356
diff
changeset
|
301 if (trap_request < 0) |
|
13857
a9604b40f5e7
On HotSpot, debug_id should be an int, not a short
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
13641
diff
changeset
|
302 return ((~(trap_request) >> _debug_id_shift) & right_n_bits(_debug_id_bits)); |
|
12699
38b84d5a66fd
Start passing down a 'speculation id' to deoptimizations.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12356
diff
changeset
|
303 else |
|
38b84d5a66fd
Start passing down a 'speculation id' to deoptimizations.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12356
diff
changeset
|
304 // standard action for unloaded CP entry |
|
38b84d5a66fd
Start passing down a 'speculation id' to deoptimizations.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12356
diff
changeset
|
305 return 0; |
|
38b84d5a66fd
Start passing down a 'speculation id' to deoptimizations.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
12356
diff
changeset
|
306 } |
| 0 | 307 static int trap_request_index(int trap_request) { |
| 308 if (trap_request < 0) | |
| 309 return -1; | |
| 310 else | |
| 311 return trap_request; | |
| 312 } | |
| 313 static int make_trap_request(DeoptReason reason, DeoptAction action, | |
| 314 int index = -1) { | |
|
14124
7ad529321294
make: remove GRAALVM and introduce COMPILERGRAAL. fix client hosted-mode
Bernhard Urban <bernhard.urban@jku.at>
parents:
13857
diff
changeset
|
315 #if defined(COMPILERGRAAL) && !defined(COMPILER1) && !defined(COMPILER2) |
|
5110
0ebca2e35ca5
more preparations for disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4137
diff
changeset
|
316 assert(index == -1, "Graal does not use index"); |
|
0ebca2e35ca5
more preparations for disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4137
diff
changeset
|
317 #endif |
|
0ebca2e35ca5
more preparations for disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4137
diff
changeset
|
318 |
| 0 | 319 assert((1 << _reason_bits) >= Reason_LIMIT, "enough bits"); |
| 320 assert((1 << _action_bits) >= Action_LIMIT, "enough bits"); | |
| 321 int trap_request; | |
| 322 if (index != -1) | |
| 323 trap_request = index; | |
| 324 else | |
| 325 trap_request = (~(((reason) << _reason_shift) | |
| 326 + ((action) << _action_shift))); | |
| 327 assert(reason == trap_request_reason(trap_request), "valid reason"); | |
| 328 assert(action == trap_request_action(trap_request), "valid action"); | |
| 329 assert(index == trap_request_index(trap_request), "valid index"); | |
| 330 return trap_request; | |
| 331 } | |
| 332 | |
| 333 // The trap_state stored in a MDO is decoded here. | |
| 334 // It records two items of information. | |
| 335 // reason: If a deoptimization happened here, what its reason was, | |
| 336 // or if there were multiple deopts with differing reasons. | |
| 337 // recompiled: If a deoptimization here triggered a recompilation. | |
| 338 // Note that not all reasons are recorded per-bci. | |
| 339 static DeoptReason trap_state_reason(int trap_state); | |
| 340 static int trap_state_has_reason(int trap_state, int reason); | |
| 341 static int trap_state_add_reason(int trap_state, int reason); | |
| 342 static bool trap_state_is_recompiled(int trap_state); | |
| 343 static int trap_state_set_recompiled(int trap_state, bool z); | |
| 344 static const char* format_trap_state(char* buf, size_t buflen, | |
| 345 int trap_state); | |
| 346 | |
| 347 static bool reason_is_recorded_per_bytecode(DeoptReason reason) { | |
|
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1172
diff
changeset
|
348 return reason > Reason_none && reason <= Reason_RECORDED_LIMIT; |
| 0 | 349 } |
| 350 | |
| 351 static DeoptReason reason_recorded_per_bytecode_if_any(DeoptReason reason) { | |
| 352 if (reason_is_recorded_per_bytecode(reason)) | |
| 353 return reason; | |
| 354 else if (reason == Reason_div0_check) // null check due to divide-by-zero? | |
| 355 return Reason_null_check; // recorded per BCI as a null check | |
| 356 else | |
| 357 return Reason_none; | |
| 358 } | |
| 359 | |
| 360 static const char* trap_reason_name(int reason); | |
| 361 static const char* trap_action_name(int action); | |
| 362 // Format like reason='foo' action='bar' index='123'. | |
| 363 // This is suitable both for XML and for tty output. | |
| 364 static const char* format_trap_request(char* buf, size_t buflen, | |
| 365 int trap_request); | |
| 366 | |
| 367 static jint total_deoptimization_count(); | |
| 368 static jint deoptimization_count(DeoptReason reason); | |
| 369 | |
| 370 // JVMTI PopFrame support | |
| 371 | |
| 372 // Preserves incoming arguments to the popped frame when it is | |
| 373 // returning to a deoptimized caller | |
| 374 static void popframe_preserve_args(JavaThread* thread, int bytes_to_save, void* start_address); | |
| 375 | |
| 376 private: | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
377 static MethodData* get_method_data(JavaThread* thread, methodHandle m, bool create_if_missing); |
| 0 | 378 // Update the mdo's count and per-BCI reason bits, returning previous state: |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
379 static ProfileData* query_update_method_data(MethodData* trap_mdo, |
| 0 | 380 int trap_bci, |
| 381 DeoptReason reason, | |
|
5114
dad1ac9dba7d
finished first implementation of disabling runtime feedback selectively based on deoptimization history
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
382 bool update_total_trap_count, |
|
13216
51e97f88c771
Profile deoptimizations of OSR methods separately.
Roland Schatz <roland.schatz@oracle.com>
parents:
13188
diff
changeset
|
383 #ifdef GRAAL |
|
51e97f88c771
Profile deoptimizations of OSR methods separately.
Roland Schatz <roland.schatz@oracle.com>
parents:
13188
diff
changeset
|
384 bool is_osr, |
|
51e97f88c771
Profile deoptimizations of OSR methods separately.
Roland Schatz <roland.schatz@oracle.com>
parents:
13188
diff
changeset
|
385 #endif |
| 0 | 386 //outputs: |
| 387 uint& ret_this_trap_count, | |
| 388 bool& ret_maybe_prior_trap, | |
| 389 bool& ret_maybe_prior_recompile); | |
| 390 // class loading support for uncommon trap | |
| 391 static void load_class_by_index(constantPoolHandle constant_pool, int index, TRAPS); | |
| 392 static void load_class_by_index(constantPoolHandle constant_pool, int index); | |
| 393 | |
| 394 static UnrollBlock* fetch_unroll_info_helper(JavaThread* thread); | |
| 395 | |
| 396 static DeoptAction _unloaded_action; // == Action_reinterpret; | |
| 397 static const char* _trap_reason_name[Reason_LIMIT]; | |
| 398 static const char* _trap_action_name[Action_LIMIT]; | |
| 399 | |
| 400 static juint _deoptimization_hist[Reason_LIMIT][1+Action_LIMIT][BC_CASE_LIMIT]; | |
| 401 // Note: Histogram array size is 1-2 Kb. | |
| 402 | |
| 403 public: | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
404 static void update_method_data_from_interpreter(MethodData* trap_mdo, int trap_bci, int reason); |
| 0 | 405 }; |
| 406 | |
| 407 class DeoptimizationMarker : StackObj { // for profiling | |
| 408 static bool _is_active; | |
| 409 public: | |
| 410 DeoptimizationMarker() { _is_active = true; } | |
| 411 ~DeoptimizationMarker() { _is_active = false; } | |
| 412 static bool is_active() { return _is_active; } | |
| 413 }; | |
| 1972 | 414 |
| 415 #endif // SHARE_VM_RUNTIME_DEOPTIMIZATION_HPP |