Mercurial > hg > graal-compiler
annotate src/share/vm/oops/methodData.cpp @ 18027:9f169829d0e1
Merge
author | asaha |
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date | Tue, 08 Jul 2014 13:25:13 -0700 |
parents | 78bbf4d43a14 |
children | 52b4284cb496 ce8f6bb717c9 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2014, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
17780 | 27 #include "compiler/compilerOracle.hpp" |
1972 | 28 #include "interpreter/bytecode.hpp" |
29 #include "interpreter/bytecodeStream.hpp" | |
30 #include "interpreter/linkResolver.hpp" | |
7956 | 31 #include "memory/heapInspection.hpp" |
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32 #include "oops/methodData.hpp" |
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33 #include "prims/jvmtiRedefineClasses.hpp" |
1972 | 34 #include "runtime/compilationPolicy.hpp" |
35 #include "runtime/deoptimization.hpp" | |
36 #include "runtime/handles.inline.hpp" | |
0 | 37 |
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38 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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39 |
0 | 40 // ================================================================== |
41 // DataLayout | |
42 // | |
43 // Overlay for generic profiling data. | |
44 | |
45 // Some types of data layouts need a length field. | |
46 bool DataLayout::needs_array_len(u1 tag) { | |
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47 return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag) || (tag == parameters_type_data_tag); |
0 | 48 } |
49 | |
50 // Perform generic initialization of the data. More specific | |
51 // initialization occurs in overrides of ProfileData::post_initialize. | |
52 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) { | |
53 _header._bits = (intptr_t)0; | |
54 _header._struct._tag = tag; | |
55 _header._struct._bci = bci; | |
56 for (int i = 0; i < cell_count; i++) { | |
57 set_cell_at(i, (intptr_t)0); | |
58 } | |
59 if (needs_array_len(tag)) { | |
60 set_cell_at(ArrayData::array_len_off_set, cell_count - 1); // -1 for header. | |
61 } | |
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62 if (tag == call_type_data_tag) { |
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63 CallTypeData::initialize(this, cell_count); |
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64 } else if (tag == virtual_call_type_data_tag) { |
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65 VirtualCallTypeData::initialize(this, cell_count); |
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66 } |
0 | 67 } |
68 | |
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69 void DataLayout::clean_weak_klass_links(BoolObjectClosure* cl) { |
941 | 70 ResourceMark m; |
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71 data_in()->clean_weak_klass_links(cl); |
941 | 72 } |
73 | |
74 | |
0 | 75 // ================================================================== |
76 // ProfileData | |
77 // | |
78 // A ProfileData object is created to refer to a section of profiling | |
79 // data in a structured way. | |
80 | |
81 // Constructor for invalid ProfileData. | |
82 ProfileData::ProfileData() { | |
83 _data = NULL; | |
84 } | |
85 | |
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86 char* ProfileData::print_data_on_helper(const MethodData* md) const { |
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87 DataLayout* dp = md->extra_data_base(); |
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88 DataLayout* end = md->extra_data_limit(); |
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89 stringStream ss; |
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90 for (;; dp = MethodData::next_extra(dp)) { |
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91 assert(dp < end, "moved past end of extra data"); |
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92 switch(dp->tag()) { |
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93 case DataLayout::speculative_trap_data_tag: |
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94 if (dp->bci() == bci()) { |
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95 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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96 int trap = data->trap_state(); |
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97 char buf[100]; |
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98 ss.print("trap/"); |
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99 data->method()->print_short_name(&ss); |
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100 ss.print("(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); |
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101 } |
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102 break; |
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103 case DataLayout::bit_data_tag: |
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104 break; |
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105 case DataLayout::no_tag: |
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106 case DataLayout::arg_info_data_tag: |
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107 return ss.as_string(); |
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108 break; |
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109 default: |
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110 fatal(err_msg("unexpected tag %d", dp->tag())); |
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111 } |
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112 } |
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113 return NULL; |
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114 } |
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115 |
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116 void ProfileData::print_data_on(outputStream* st, const MethodData* md) const { |
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117 print_data_on(st, print_data_on_helper(md)); |
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118 } |
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119 |
0 | 120 #ifndef PRODUCT |
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121 void ProfileData::print_shared(outputStream* st, const char* name, const char* extra) const { |
0 | 122 st->print("bci: %d", bci()); |
123 st->fill_to(tab_width_one); | |
124 st->print("%s", name); | |
125 tab(st); | |
126 int trap = trap_state(); | |
127 if (trap != 0) { | |
128 char buf[100]; | |
129 st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); | |
130 } | |
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131 if (extra != NULL) { |
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132 st->print("%s", extra); |
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133 } |
0 | 134 int flags = data()->flags(); |
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135 if (flags != 0) { |
0 | 136 st->print("flags(%d) ", flags); |
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137 } |
0 | 138 } |
139 | |
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140 void ProfileData::tab(outputStream* st, bool first) const { |
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141 st->fill_to(first ? tab_width_one : tab_width_two); |
0 | 142 } |
143 #endif // !PRODUCT | |
144 | |
145 // ================================================================== | |
146 // BitData | |
147 // | |
148 // A BitData corresponds to a one-bit flag. This is used to indicate | |
149 // whether a checkcast bytecode has seen a null value. | |
150 | |
151 | |
152 #ifndef PRODUCT | |
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153 void BitData::print_data_on(outputStream* st, const char* extra) const { |
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154 print_shared(st, "BitData", extra); |
0 | 155 } |
156 #endif // !PRODUCT | |
157 | |
158 // ================================================================== | |
159 // CounterData | |
160 // | |
161 // A CounterData corresponds to a simple counter. | |
162 | |
163 #ifndef PRODUCT | |
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164 void CounterData::print_data_on(outputStream* st, const char* extra) const { |
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165 print_shared(st, "CounterData", extra); |
0 | 166 st->print_cr("count(%u)", count()); |
167 } | |
168 #endif // !PRODUCT | |
169 | |
170 // ================================================================== | |
171 // JumpData | |
172 // | |
173 // A JumpData is used to access profiling information for a direct | |
174 // branch. It is a counter, used for counting the number of branches, | |
175 // plus a data displacement, used for realigning the data pointer to | |
176 // the corresponding target bci. | |
177 | |
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178 void JumpData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 179 assert(stream->bci() == bci(), "wrong pos"); |
180 int target; | |
181 Bytecodes::Code c = stream->code(); | |
182 if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) { | |
183 target = stream->dest_w(); | |
184 } else { | |
185 target = stream->dest(); | |
186 } | |
187 int my_di = mdo->dp_to_di(dp()); | |
188 int target_di = mdo->bci_to_di(target); | |
189 int offset = target_di - my_di; | |
190 set_displacement(offset); | |
191 } | |
192 | |
193 #ifndef PRODUCT | |
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194 void JumpData::print_data_on(outputStream* st, const char* extra) const { |
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195 print_shared(st, "JumpData", extra); |
0 | 196 st->print_cr("taken(%u) displacement(%d)", taken(), displacement()); |
197 } | |
198 #endif // !PRODUCT | |
199 | |
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200 int TypeStackSlotEntries::compute_cell_count(Symbol* signature, bool include_receiver, int max) { |
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201 // Parameter profiling include the receiver |
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202 int args_count = include_receiver ? 1 : 0; |
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203 ResourceMark rm; |
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204 SignatureStream ss(signature); |
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205 args_count += ss.reference_parameter_count(); |
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206 args_count = MIN2(args_count, max); |
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207 return args_count * per_arg_cell_count; |
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208 } |
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209 |
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210 int TypeEntriesAtCall::compute_cell_count(BytecodeStream* stream) { |
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211 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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212 assert(TypeStackSlotEntries::per_arg_count() > ReturnTypeEntry::static_cell_count(), "code to test for arguments/results broken"); |
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213 Bytecode_invoke inv(stream->method(), stream->bci()); |
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214 int args_cell = 0; |
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215 if (arguments_profiling_enabled()) { |
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216 args_cell = TypeStackSlotEntries::compute_cell_count(inv.signature(), false, TypeProfileArgsLimit); |
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217 } |
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218 int ret_cell = 0; |
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219 if (return_profiling_enabled() && (inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY)) { |
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220 ret_cell = ReturnTypeEntry::static_cell_count(); |
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221 } |
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222 int header_cell = 0; |
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223 if (args_cell + ret_cell > 0) { |
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224 header_cell = header_cell_count(); |
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225 } |
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226 |
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227 return header_cell + args_cell + ret_cell; |
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228 } |
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229 |
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230 class ArgumentOffsetComputer : public SignatureInfo { |
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231 private: |
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232 int _max; |
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233 GrowableArray<int> _offsets; |
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234 |
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235 void set(int size, BasicType type) { _size += size; } |
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236 void do_object(int begin, int end) { |
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237 if (_offsets.length() < _max) { |
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238 _offsets.push(_size); |
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239 } |
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240 SignatureInfo::do_object(begin, end); |
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241 } |
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242 void do_array (int begin, int end) { |
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243 if (_offsets.length() < _max) { |
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244 _offsets.push(_size); |
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245 } |
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246 SignatureInfo::do_array(begin, end); |
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247 } |
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248 |
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249 public: |
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250 ArgumentOffsetComputer(Symbol* signature, int max) |
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251 : SignatureInfo(signature), _max(max), _offsets(Thread::current(), max) { |
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252 } |
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253 |
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254 int total() { lazy_iterate_parameters(); return _size; } |
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255 |
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256 int off_at(int i) const { return _offsets.at(i); } |
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257 }; |
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258 |
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259 void TypeStackSlotEntries::post_initialize(Symbol* signature, bool has_receiver, bool include_receiver) { |
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260 ResourceMark rm; |
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261 int start = 0; |
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262 // Parameter profiling include the receiver |
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263 if (include_receiver && has_receiver) { |
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264 set_stack_slot(0, 0); |
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265 set_type(0, type_none()); |
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266 start += 1; |
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267 } |
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268 ArgumentOffsetComputer aos(signature, _number_of_entries-start); |
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269 aos.total(); |
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270 for (int i = start; i < _number_of_entries; i++) { |
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271 set_stack_slot(i, aos.off_at(i-start) + (has_receiver ? 1 : 0)); |
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272 set_type(i, type_none()); |
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273 } |
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274 } |
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275 |
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276 void CallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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277 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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278 Bytecode_invoke inv(stream->method(), stream->bci()); |
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279 |
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280 SignatureStream ss(inv.signature()); |
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281 if (has_arguments()) { |
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282 #ifdef ASSERT |
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283 ResourceMark rm; |
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284 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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285 assert(count > 0, "room for args type but none found?"); |
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286 check_number_of_arguments(count); |
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287 #endif |
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288 _args.post_initialize(inv.signature(), inv.has_receiver(), false); |
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289 } |
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290 |
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291 if (has_return()) { |
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292 assert(inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY, "room for a ret type but doesn't return obj?"); |
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293 _ret.post_initialize(); |
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294 } |
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295 } |
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296 |
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297 void VirtualCallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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298 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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299 Bytecode_invoke inv(stream->method(), stream->bci()); |
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300 |
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301 if (has_arguments()) { |
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302 #ifdef ASSERT |
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303 ResourceMark rm; |
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304 SignatureStream ss(inv.signature()); |
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305 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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306 assert(count > 0, "room for args type but none found?"); |
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307 check_number_of_arguments(count); |
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308 #endif |
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309 _args.post_initialize(inv.signature(), inv.has_receiver(), false); |
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310 } |
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311 |
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312 if (has_return()) { |
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313 assert(inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY, "room for a ret type but doesn't return obj?"); |
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314 _ret.post_initialize(); |
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315 } |
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316 } |
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317 |
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318 bool TypeEntries::is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p) { |
13080 | 319 Klass* k = (Klass*)klass_part(p); |
320 return k != NULL && k->is_loader_alive(is_alive_cl); | |
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321 } |
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322 |
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323 void TypeStackSlotEntries::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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324 for (int i = 0; i < _number_of_entries; i++) { |
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325 intptr_t p = type(i); |
13080 | 326 if (!is_loader_alive(is_alive_cl, p)) { |
327 set_type(i, with_status((Klass*)NULL, p)); | |
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328 } |
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329 } |
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330 } |
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331 |
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332 void ReturnTypeEntry::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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333 intptr_t p = type(); |
13080 | 334 if (!is_loader_alive(is_alive_cl, p)) { |
335 set_type(with_status((Klass*)NULL, p)); | |
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336 } |
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337 } |
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338 |
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339 bool TypeEntriesAtCall::return_profiling_enabled() { |
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340 return MethodData::profile_return(); |
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341 } |
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342 |
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343 bool TypeEntriesAtCall::arguments_profiling_enabled() { |
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344 return MethodData::profile_arguments(); |
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345 } |
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346 |
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347 #ifndef PRODUCT |
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348 void TypeEntries::print_klass(outputStream* st, intptr_t k) { |
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349 if (is_type_none(k)) { |
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350 st->print("none"); |
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351 } else if (is_type_unknown(k)) { |
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352 st->print("unknown"); |
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353 } else { |
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354 valid_klass(k)->print_value_on(st); |
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355 } |
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356 if (was_null_seen(k)) { |
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357 st->print(" (null seen)"); |
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358 } |
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359 } |
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360 |
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361 void TypeStackSlotEntries::print_data_on(outputStream* st) const { |
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362 for (int i = 0; i < _number_of_entries; i++) { |
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363 _pd->tab(st); |
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364 st->print("%d: stack(%u) ", i, stack_slot(i)); |
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365 print_klass(st, type(i)); |
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366 st->cr(); |
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367 } |
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368 } |
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369 |
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370 void ReturnTypeEntry::print_data_on(outputStream* st) const { |
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371 _pd->tab(st); |
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372 print_klass(st, type()); |
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373 st->cr(); |
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374 } |
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375 |
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376 void CallTypeData::print_data_on(outputStream* st, const char* extra) const { |
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377 CounterData::print_data_on(st, extra); |
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378 if (has_arguments()) { |
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379 tab(st, true); |
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380 st->print("argument types"); |
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381 _args.print_data_on(st); |
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382 } |
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383 if (has_return()) { |
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384 tab(st, true); |
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385 st->print("return type"); |
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386 _ret.print_data_on(st); |
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387 } |
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388 } |
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389 |
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390 void VirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const { |
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391 VirtualCallData::print_data_on(st, extra); |
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392 if (has_arguments()) { |
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393 tab(st, true); |
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394 st->print("argument types"); |
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395 _args.print_data_on(st); |
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396 } |
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397 if (has_return()) { |
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398 tab(st, true); |
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399 st->print("return type"); |
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400 _ret.print_data_on(st); |
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401 } |
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402 } |
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403 #endif |
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404 |
0 | 405 // ================================================================== |
406 // ReceiverTypeData | |
407 // | |
408 // A ReceiverTypeData is used to access profiling information about a | |
409 // dynamic type check. It consists of a counter which counts the total times | |
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410 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 411 // which are used to store a type profile for the receiver of the check. |
412 | |
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413 void ReceiverTypeData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
941 | 414 for (uint row = 0; row < row_limit(); row++) { |
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415 Klass* p = receiver(row); |
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416 if (p != NULL && !p->is_loader_alive(is_alive_cl)) { |
941 | 417 clear_row(row); |
418 } | |
419 } | |
420 } | |
421 | |
0 | 422 #ifndef PRODUCT |
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423 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const { |
0 | 424 uint row; |
425 int entries = 0; | |
426 for (row = 0; row < row_limit(); row++) { | |
427 if (receiver(row) != NULL) entries++; | |
428 } | |
429 st->print_cr("count(%u) entries(%u)", count(), entries); | |
1783 | 430 int total = count(); |
431 for (row = 0; row < row_limit(); row++) { | |
432 if (receiver(row) != NULL) { | |
433 total += receiver_count(row); | |
434 } | |
435 } | |
0 | 436 for (row = 0; row < row_limit(); row++) { |
437 if (receiver(row) != NULL) { | |
438 tab(st); | |
439 receiver(row)->print_value_on(st); | |
1783 | 440 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total); |
0 | 441 } |
442 } | |
443 } | |
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444 void ReceiverTypeData::print_data_on(outputStream* st, const char* extra) const { |
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445 print_shared(st, "ReceiverTypeData", extra); |
0 | 446 print_receiver_data_on(st); |
447 } | |
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448 void VirtualCallData::print_data_on(outputStream* st, const char* extra) const { |
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449 print_shared(st, "VirtualCallData", extra); |
0 | 450 print_receiver_data_on(st); |
451 } | |
452 #endif // !PRODUCT | |
453 | |
454 // ================================================================== | |
455 // RetData | |
456 // | |
457 // A RetData is used to access profiling information for a ret bytecode. | |
458 // It is composed of a count of the number of times that the ret has | |
459 // been executed, followed by a series of triples of the form | |
460 // (bci, count, di) which count the number of times that some bci was the | |
461 // target of the ret and cache a corresponding displacement. | |
462 | |
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463 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 464 for (uint row = 0; row < row_limit(); row++) { |
465 set_bci_displacement(row, -1); | |
466 set_bci(row, no_bci); | |
467 } | |
468 // release so other threads see a consistent state. bci is used as | |
469 // a valid flag for bci_displacement. | |
470 OrderAccess::release(); | |
471 } | |
472 | |
473 // This routine needs to atomically update the RetData structure, so the | |
474 // caller needs to hold the RetData_lock before it gets here. Since taking | |
475 // the lock can block (and allow GC) and since RetData is a ProfileData is a | |
476 // wrapper around a derived oop, taking the lock in _this_ method will | |
477 // basically cause the 'this' pointer's _data field to contain junk after the | |
478 // lock. We require the caller to take the lock before making the ProfileData | |
479 // structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret | |
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480 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) { |
0 | 481 // First find the mdp which corresponds to the return bci. |
482 address mdp = h_mdo->bci_to_dp(return_bci); | |
483 | |
484 // Now check to see if any of the cache slots are open. | |
485 for (uint row = 0; row < row_limit(); row++) { | |
486 if (bci(row) == no_bci) { | |
487 set_bci_displacement(row, mdp - dp()); | |
488 set_bci_count(row, DataLayout::counter_increment); | |
489 // Barrier to ensure displacement is written before the bci; allows | |
490 // the interpreter to read displacement without fear of race condition. | |
491 release_set_bci(row, return_bci); | |
492 break; | |
493 } | |
494 } | |
495 return mdp; | |
496 } | |
497 | |
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498 #ifdef CC_INTERP |
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499 DataLayout* RetData::advance(MethodData *md, int bci) { |
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500 return (DataLayout*) md->bci_to_dp(bci); |
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501 } |
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502 #endif // CC_INTERP |
0 | 503 |
504 #ifndef PRODUCT | |
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505 void RetData::print_data_on(outputStream* st, const char* extra) const { |
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506 print_shared(st, "RetData", extra); |
0 | 507 uint row; |
508 int entries = 0; | |
509 for (row = 0; row < row_limit(); row++) { | |
510 if (bci(row) != no_bci) entries++; | |
511 } | |
512 st->print_cr("count(%u) entries(%u)", count(), entries); | |
513 for (row = 0; row < row_limit(); row++) { | |
514 if (bci(row) != no_bci) { | |
515 tab(st); | |
516 st->print_cr("bci(%d: count(%u) displacement(%d))", | |
517 bci(row), bci_count(row), bci_displacement(row)); | |
518 } | |
519 } | |
520 } | |
521 #endif // !PRODUCT | |
522 | |
523 // ================================================================== | |
524 // BranchData | |
525 // | |
526 // A BranchData is used to access profiling data for a two-way branch. | |
527 // It consists of taken and not_taken counts as well as a data displacement | |
528 // for the taken case. | |
529 | |
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530 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 531 assert(stream->bci() == bci(), "wrong pos"); |
532 int target = stream->dest(); | |
533 int my_di = mdo->dp_to_di(dp()); | |
534 int target_di = mdo->bci_to_di(target); | |
535 int offset = target_di - my_di; | |
536 set_displacement(offset); | |
537 } | |
538 | |
539 #ifndef PRODUCT | |
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540 void BranchData::print_data_on(outputStream* st, const char* extra) const { |
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541 print_shared(st, "BranchData", extra); |
0 | 542 st->print_cr("taken(%u) displacement(%d)", |
543 taken(), displacement()); | |
544 tab(st); | |
545 st->print_cr("not taken(%u)", not_taken()); | |
546 } | |
547 #endif | |
548 | |
549 // ================================================================== | |
550 // MultiBranchData | |
551 // | |
552 // A MultiBranchData is used to access profiling information for | |
553 // a multi-way branch (*switch bytecodes). It consists of a series | |
554 // of (count, displacement) pairs, which count the number of times each | |
555 // case was taken and specify the data displacment for each branch target. | |
556 | |
557 int MultiBranchData::compute_cell_count(BytecodeStream* stream) { | |
558 int cell_count = 0; | |
559 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 560 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
561 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default | |
0 | 562 } else { |
2142 | 563 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
564 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default | |
0 | 565 } |
566 return cell_count; | |
567 } | |
568 | |
569 void MultiBranchData::post_initialize(BytecodeStream* stream, | |
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570 MethodData* mdo) { |
0 | 571 assert(stream->bci() == bci(), "wrong pos"); |
572 int target; | |
573 int my_di; | |
574 int target_di; | |
575 int offset; | |
576 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 577 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
578 int len = sw.length(); | |
0 | 579 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); |
580 for (int count = 0; count < len; count++) { | |
2142 | 581 target = sw.dest_offset_at(count) + bci(); |
0 | 582 my_di = mdo->dp_to_di(dp()); |
583 target_di = mdo->bci_to_di(target); | |
584 offset = target_di - my_di; | |
585 set_displacement_at(count, offset); | |
586 } | |
2142 | 587 target = sw.default_offset() + bci(); |
0 | 588 my_di = mdo->dp_to_di(dp()); |
589 target_di = mdo->bci_to_di(target); | |
590 offset = target_di - my_di; | |
591 set_default_displacement(offset); | |
592 | |
593 } else { | |
2142 | 594 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
595 int npairs = sw.number_of_pairs(); | |
0 | 596 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); |
597 for (int count = 0; count < npairs; count++) { | |
2142 | 598 LookupswitchPair pair = sw.pair_at(count); |
599 target = pair.offset() + bci(); | |
0 | 600 my_di = mdo->dp_to_di(dp()); |
601 target_di = mdo->bci_to_di(target); | |
602 offset = target_di - my_di; | |
603 set_displacement_at(count, offset); | |
604 } | |
2142 | 605 target = sw.default_offset() + bci(); |
0 | 606 my_di = mdo->dp_to_di(dp()); |
607 target_di = mdo->bci_to_di(target); | |
608 offset = target_di - my_di; | |
609 set_default_displacement(offset); | |
610 } | |
611 } | |
612 | |
613 #ifndef PRODUCT | |
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614 void MultiBranchData::print_data_on(outputStream* st, const char* extra) const { |
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615 print_shared(st, "MultiBranchData", extra); |
0 | 616 st->print_cr("default_count(%u) displacement(%d)", |
617 default_count(), default_displacement()); | |
618 int cases = number_of_cases(); | |
619 for (int i = 0; i < cases; i++) { | |
620 tab(st); | |
621 st->print_cr("count(%u) displacement(%d)", | |
622 count_at(i), displacement_at(i)); | |
623 } | |
624 } | |
625 #endif | |
626 | |
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627 #ifndef PRODUCT |
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628 void ArgInfoData::print_data_on(outputStream* st, const char* extra) const { |
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629 print_shared(st, "ArgInfoData", extra); |
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630 int nargs = number_of_args(); |
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631 for (int i = 0; i < nargs; i++) { |
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632 st->print(" 0x%x", arg_modified(i)); |
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633 } |
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634 st->cr(); |
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635 } |
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636 |
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637 #endif |
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638 |
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639 int ParametersTypeData::compute_cell_count(Method* m) { |
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640 if (!MethodData::profile_parameters_for_method(m)) { |
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641 return 0; |
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642 } |
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643 int max = TypeProfileParmsLimit == -1 ? INT_MAX : TypeProfileParmsLimit; |
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644 int obj_args = TypeStackSlotEntries::compute_cell_count(m->signature(), !m->is_static(), max); |
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645 if (obj_args > 0) { |
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646 return obj_args + 1; // 1 cell for array len |
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647 } |
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648 return 0; |
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649 } |
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650 |
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651 void ParametersTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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652 _parameters.post_initialize(mdo->method()->signature(), !mdo->method()->is_static(), true); |
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653 } |
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654 |
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655 bool ParametersTypeData::profiling_enabled() { |
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656 return MethodData::profile_parameters(); |
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657 } |
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658 |
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659 #ifndef PRODUCT |
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660 void ParametersTypeData::print_data_on(outputStream* st, const char* extra) const { |
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661 st->print("parameter types"); // FIXME extra ignored? |
12962
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662 _parameters.print_data_on(st); |
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663 } |
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664 |
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665 void SpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const { |
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666 print_shared(st, "SpeculativeTrapData", extra); |
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667 tab(st); |
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668 method()->print_short_name(st); |
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669 st->cr(); |
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670 } |
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671 #endif |
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672 |
0 | 673 // ================================================================== |
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674 // MethodData* |
0 | 675 // |
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676 // A MethodData* holds information which has been collected about |
0 | 677 // a method. |
678 | |
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679 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { |
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680 int size = MethodData::compute_allocation_size_in_words(method); |
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681 |
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682 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) |
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683 MethodData(method(), size, CHECK_NULL); |
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684 } |
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685 |
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686 int MethodData::bytecode_cell_count(Bytecodes::Code code) { |
8860 | 687 #if defined(COMPILER1) && !defined(COMPILER2) |
688 return no_profile_data; | |
689 #else | |
0 | 690 switch (code) { |
691 case Bytecodes::_checkcast: | |
692 case Bytecodes::_instanceof: | |
693 case Bytecodes::_aastore: | |
694 if (TypeProfileCasts) { | |
695 return ReceiverTypeData::static_cell_count(); | |
696 } else { | |
697 return BitData::static_cell_count(); | |
698 } | |
699 case Bytecodes::_invokespecial: | |
700 case Bytecodes::_invokestatic: | |
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701 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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702 return variable_cell_count; |
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703 } else { |
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704 return CounterData::static_cell_count(); |
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705 } |
0 | 706 case Bytecodes::_goto: |
707 case Bytecodes::_goto_w: | |
708 case Bytecodes::_jsr: | |
709 case Bytecodes::_jsr_w: | |
710 return JumpData::static_cell_count(); | |
711 case Bytecodes::_invokevirtual: | |
712 case Bytecodes::_invokeinterface: | |
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713 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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714 return variable_cell_count; |
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715 } else { |
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716 return VirtualCallData::static_cell_count(); |
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|
717 } |
726
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|
718 case Bytecodes::_invokedynamic: |
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719 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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720 return variable_cell_count; |
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|
721 } else { |
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722 return CounterData::static_cell_count(); |
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|
723 } |
0 | 724 case Bytecodes::_ret: |
725 return RetData::static_cell_count(); | |
726 case Bytecodes::_ifeq: | |
727 case Bytecodes::_ifne: | |
728 case Bytecodes::_iflt: | |
729 case Bytecodes::_ifge: | |
730 case Bytecodes::_ifgt: | |
731 case Bytecodes::_ifle: | |
732 case Bytecodes::_if_icmpeq: | |
733 case Bytecodes::_if_icmpne: | |
734 case Bytecodes::_if_icmplt: | |
735 case Bytecodes::_if_icmpge: | |
736 case Bytecodes::_if_icmpgt: | |
737 case Bytecodes::_if_icmple: | |
738 case Bytecodes::_if_acmpeq: | |
739 case Bytecodes::_if_acmpne: | |
740 case Bytecodes::_ifnull: | |
741 case Bytecodes::_ifnonnull: | |
742 return BranchData::static_cell_count(); | |
743 case Bytecodes::_lookupswitch: | |
744 case Bytecodes::_tableswitch: | |
745 return variable_cell_count; | |
746 } | |
747 return no_profile_data; | |
8860 | 748 #endif |
0 | 749 } |
750 | |
751 // Compute the size of the profiling information corresponding to | |
752 // the current bytecode. | |
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753 int MethodData::compute_data_size(BytecodeStream* stream) { |
0 | 754 int cell_count = bytecode_cell_count(stream->code()); |
755 if (cell_count == no_profile_data) { | |
756 return 0; | |
757 } | |
758 if (cell_count == variable_cell_count) { | |
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759 switch (stream->code()) { |
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760 case Bytecodes::_lookupswitch: |
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761 case Bytecodes::_tableswitch: |
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762 cell_count = MultiBranchData::compute_cell_count(stream); |
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763 break; |
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764 case Bytecodes::_invokespecial: |
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765 case Bytecodes::_invokestatic: |
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766 case Bytecodes::_invokedynamic: |
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767 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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768 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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769 profile_return_for_invoke(stream->method(), stream->bci())) { |
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770 cell_count = CallTypeData::compute_cell_count(stream); |
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771 } else { |
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|
772 cell_count = CounterData::static_cell_count(); |
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|
773 } |
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|
774 break; |
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|
775 case Bytecodes::_invokevirtual: |
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|
776 case Bytecodes::_invokeinterface: { |
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777 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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778 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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779 profile_return_for_invoke(stream->method(), stream->bci())) { |
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780 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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781 } else { |
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|
782 cell_count = VirtualCallData::static_cell_count(); |
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|
783 } |
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|
784 break; |
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|
785 } |
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|
786 default: |
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787 fatal("unexpected bytecode for var length profile data"); |
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|
788 } |
0 | 789 } |
790 // Note: cell_count might be zero, meaning that there is just | |
791 // a DataLayout header, with no extra cells. | |
792 assert(cell_count >= 0, "sanity"); | |
793 return DataLayout::compute_size_in_bytes(cell_count); | |
794 } | |
795 | |
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796 bool MethodData::is_speculative_trap_bytecode(Bytecodes::Code code) { |
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797 // Bytecodes for which we may use speculation |
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798 switch (code) { |
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799 case Bytecodes::_checkcast: |
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800 case Bytecodes::_instanceof: |
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801 case Bytecodes::_aastore: |
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802 case Bytecodes::_invokevirtual: |
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803 case Bytecodes::_invokeinterface: |
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804 case Bytecodes::_if_acmpeq: |
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805 case Bytecodes::_if_acmpne: |
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806 case Bytecodes::_invokestatic: |
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|
807 #ifdef COMPILER2 |
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|
808 return UseTypeSpeculation; |
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|
809 #endif |
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810 default: |
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|
811 return false; |
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|
812 } |
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813 return false; |
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|
814 } |
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815 |
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816 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps) { |
0 | 817 if (ProfileTraps) { |
818 // Assume that up to 3% of BCIs with no MDP will need to allocate one. | |
819 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; | |
820 // If the method is large, let the extra BCIs grow numerous (to ~1%). | |
821 int one_percent_of_data | |
822 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); | |
823 if (extra_data_count < one_percent_of_data) | |
824 extra_data_count = one_percent_of_data; | |
825 if (extra_data_count > empty_bc_count) | |
826 extra_data_count = empty_bc_count; // no need for more | |
17728
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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827 |
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828 // Make sure we have a minimum number of extra data slots to |
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829 // allocate SpeculativeTrapData entries. We would want to have one |
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830 // entry per compilation that inlines this method and for which |
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831 // some type speculation assumption fails. So the room we need for |
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832 // the SpeculativeTrapData entries doesn't directly depend on the |
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833 // size of the method. Because it's hard to estimate, we reserve |
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834 // space for an arbitrary number of entries. |
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835 int spec_data_count = (needs_speculative_traps ? SpecTrapLimitExtraEntries : 0) * |
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836 (SpeculativeTrapData::static_cell_count() + DataLayout::header_size_in_cells()); |
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837 |
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838 return MAX2(extra_data_count, spec_data_count); |
0 | 839 } else { |
840 return 0; | |
841 } | |
842 } | |
843 | |
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844 // Compute the size of the MethodData* necessary to store |
0 | 845 // profiling information about a given method. Size is in bytes. |
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846 int MethodData::compute_allocation_size_in_bytes(methodHandle method) { |
0 | 847 int data_size = 0; |
848 BytecodeStream stream(method); | |
849 Bytecodes::Code c; | |
850 int empty_bc_count = 0; // number of bytecodes lacking data | |
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851 bool needs_speculative_traps = false; |
0 | 852 while ((c = stream.next()) >= 0) { |
853 int size_in_bytes = compute_data_size(&stream); | |
854 data_size += size_in_bytes; | |
855 if (size_in_bytes == 0) empty_bc_count += 1; | |
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856 needs_speculative_traps = needs_speculative_traps || is_speculative_trap_bytecode(c); |
0 | 857 } |
858 int object_size = in_bytes(data_offset()) + data_size; | |
859 | |
860 // Add some extra DataLayout cells (at least one) to track stray traps. | |
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861 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count, needs_speculative_traps); |
0 | 862 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); |
863 | |
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864 // Add a cell to record information about modified arguments. |
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865 int arg_size = method->size_of_parameters(); |
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866 object_size += DataLayout::compute_size_in_bytes(arg_size+1); |
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867 |
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868 // Reserve room for an area of the MDO dedicated to profiling of |
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869 // parameters |
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870 int args_cell = ParametersTypeData::compute_cell_count(method()); |
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871 if (args_cell > 0) { |
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872 object_size += DataLayout::compute_size_in_bytes(args_cell); |
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873 } |
0 | 874 return object_size; |
875 } | |
876 | |
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877 // Compute the size of the MethodData* necessary to store |
0 | 878 // profiling information about a given method. Size is in words |
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879 int MethodData::compute_allocation_size_in_words(methodHandle method) { |
0 | 880 int byte_size = compute_allocation_size_in_bytes(method); |
881 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; | |
882 return align_object_size(word_size); | |
883 } | |
884 | |
885 // Initialize an individual data segment. Returns the size of | |
886 // the segment in bytes. | |
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887 int MethodData::initialize_data(BytecodeStream* stream, |
0 | 888 int data_index) { |
8860 | 889 #if defined(COMPILER1) && !defined(COMPILER2) |
890 return 0; | |
891 #else | |
0 | 892 int cell_count = -1; |
893 int tag = DataLayout::no_tag; | |
894 DataLayout* data_layout = data_layout_at(data_index); | |
895 Bytecodes::Code c = stream->code(); | |
896 switch (c) { | |
897 case Bytecodes::_checkcast: | |
898 case Bytecodes::_instanceof: | |
899 case Bytecodes::_aastore: | |
900 if (TypeProfileCasts) { | |
901 cell_count = ReceiverTypeData::static_cell_count(); | |
902 tag = DataLayout::receiver_type_data_tag; | |
903 } else { | |
904 cell_count = BitData::static_cell_count(); | |
905 tag = DataLayout::bit_data_tag; | |
906 } | |
907 break; | |
908 case Bytecodes::_invokespecial: | |
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909 case Bytecodes::_invokestatic: { |
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910 int counter_data_cell_count = CounterData::static_cell_count(); |
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911 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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912 profile_return_for_invoke(stream->method(), stream->bci())) { |
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913 cell_count = CallTypeData::compute_cell_count(stream); |
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914 } else { |
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915 cell_count = counter_data_cell_count; |
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916 } |
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917 if (cell_count > counter_data_cell_count) { |
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918 tag = DataLayout::call_type_data_tag; |
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919 } else { |
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920 tag = DataLayout::counter_data_tag; |
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921 } |
0 | 922 break; |
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923 } |
0 | 924 case Bytecodes::_goto: |
925 case Bytecodes::_goto_w: | |
926 case Bytecodes::_jsr: | |
927 case Bytecodes::_jsr_w: | |
928 cell_count = JumpData::static_cell_count(); | |
929 tag = DataLayout::jump_data_tag; | |
930 break; | |
931 case Bytecodes::_invokevirtual: | |
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932 case Bytecodes::_invokeinterface: { |
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933 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); |
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934 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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935 profile_return_for_invoke(stream->method(), stream->bci())) { |
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936 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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937 } else { |
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938 cell_count = virtual_call_data_cell_count; |
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939 } |
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940 if (cell_count > virtual_call_data_cell_count) { |
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941 tag = DataLayout::virtual_call_type_data_tag; |
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942 } else { |
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943 tag = DataLayout::virtual_call_data_tag; |
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944 } |
0 | 945 break; |
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946 } |
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947 case Bytecodes::_invokedynamic: { |
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948 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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949 int counter_data_cell_count = CounterData::static_cell_count(); |
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950 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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951 profile_return_for_invoke(stream->method(), stream->bci())) { |
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952 cell_count = CallTypeData::compute_cell_count(stream); |
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953 } else { |
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954 cell_count = counter_data_cell_count; |
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955 } |
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956 if (cell_count > counter_data_cell_count) { |
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957 tag = DataLayout::call_type_data_tag; |
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958 } else { |
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959 tag = DataLayout::counter_data_tag; |
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960 } |
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961 break; |
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|
962 } |
0 | 963 case Bytecodes::_ret: |
964 cell_count = RetData::static_cell_count(); | |
965 tag = DataLayout::ret_data_tag; | |
966 break; | |
967 case Bytecodes::_ifeq: | |
968 case Bytecodes::_ifne: | |
969 case Bytecodes::_iflt: | |
970 case Bytecodes::_ifge: | |
971 case Bytecodes::_ifgt: | |
972 case Bytecodes::_ifle: | |
973 case Bytecodes::_if_icmpeq: | |
974 case Bytecodes::_if_icmpne: | |
975 case Bytecodes::_if_icmplt: | |
976 case Bytecodes::_if_icmpge: | |
977 case Bytecodes::_if_icmpgt: | |
978 case Bytecodes::_if_icmple: | |
979 case Bytecodes::_if_acmpeq: | |
980 case Bytecodes::_if_acmpne: | |
981 case Bytecodes::_ifnull: | |
982 case Bytecodes::_ifnonnull: | |
983 cell_count = BranchData::static_cell_count(); | |
984 tag = DataLayout::branch_data_tag; | |
985 break; | |
986 case Bytecodes::_lookupswitch: | |
987 case Bytecodes::_tableswitch: | |
988 cell_count = MultiBranchData::compute_cell_count(stream); | |
989 tag = DataLayout::multi_branch_data_tag; | |
990 break; | |
991 } | |
992 assert(tag == DataLayout::multi_branch_data_tag || | |
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993 ((MethodData::profile_arguments() || MethodData::profile_return()) && |
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994 (tag == DataLayout::call_type_data_tag || |
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995 tag == DataLayout::counter_data_tag || |
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996 tag == DataLayout::virtual_call_type_data_tag || |
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997 tag == DataLayout::virtual_call_data_tag)) || |
0 | 998 cell_count == bytecode_cell_count(c), "cell counts must agree"); |
999 if (cell_count >= 0) { | |
1000 assert(tag != DataLayout::no_tag, "bad tag"); | |
1001 assert(bytecode_has_profile(c), "agree w/ BHP"); | |
1002 data_layout->initialize(tag, stream->bci(), cell_count); | |
1003 return DataLayout::compute_size_in_bytes(cell_count); | |
1004 } else { | |
1005 assert(!bytecode_has_profile(c), "agree w/ !BHP"); | |
1006 return 0; | |
1007 } | |
8860 | 1008 #endif |
0 | 1009 } |
1010 | |
1011 // Get the data at an arbitrary (sort of) data index. | |
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1012 ProfileData* MethodData::data_at(int data_index) const { |
0 | 1013 if (out_of_bounds(data_index)) { |
1014 return NULL; | |
1015 } | |
1016 DataLayout* data_layout = data_layout_at(data_index); | |
941 | 1017 return data_layout->data_in(); |
1018 } | |
0 | 1019 |
941 | 1020 ProfileData* DataLayout::data_in() { |
1021 switch (tag()) { | |
0 | 1022 case DataLayout::no_tag: |
1023 default: | |
1024 ShouldNotReachHere(); | |
1025 return NULL; | |
1026 case DataLayout::bit_data_tag: | |
941 | 1027 return new BitData(this); |
0 | 1028 case DataLayout::counter_data_tag: |
941 | 1029 return new CounterData(this); |
0 | 1030 case DataLayout::jump_data_tag: |
941 | 1031 return new JumpData(this); |
0 | 1032 case DataLayout::receiver_type_data_tag: |
941 | 1033 return new ReceiverTypeData(this); |
0 | 1034 case DataLayout::virtual_call_data_tag: |
941 | 1035 return new VirtualCallData(this); |
0 | 1036 case DataLayout::ret_data_tag: |
941 | 1037 return new RetData(this); |
0 | 1038 case DataLayout::branch_data_tag: |
941 | 1039 return new BranchData(this); |
0 | 1040 case DataLayout::multi_branch_data_tag: |
941 | 1041 return new MultiBranchData(this); |
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1042 case DataLayout::arg_info_data_tag: |
941 | 1043 return new ArgInfoData(this); |
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1044 case DataLayout::call_type_data_tag: |
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1045 return new CallTypeData(this); |
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1046 case DataLayout::virtual_call_type_data_tag: |
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1047 return new VirtualCallTypeData(this); |
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1048 case DataLayout::parameters_type_data_tag: |
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1049 return new ParametersTypeData(this); |
0 | 1050 }; |
1051 } | |
1052 | |
1053 // Iteration over data. | |
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1054 ProfileData* MethodData::next_data(ProfileData* current) const { |
0 | 1055 int current_index = dp_to_di(current->dp()); |
1056 int next_index = current_index + current->size_in_bytes(); | |
1057 ProfileData* next = data_at(next_index); | |
1058 return next; | |
1059 } | |
1060 | |
1061 // Give each of the data entries a chance to perform specific | |
1062 // data initialization. | |
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1063 void MethodData::post_initialize(BytecodeStream* stream) { |
0 | 1064 ResourceMark rm; |
1065 ProfileData* data; | |
1066 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
1067 stream->set_start(data->bci()); | |
1068 stream->next(); | |
1069 data->post_initialize(stream, this); | |
1070 } | |
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1071 if (_parameters_type_data_di != -1) { |
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1072 parameters_type_data()->post_initialize(NULL, this); |
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1073 } |
0 | 1074 } |
1075 | |
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1076 // Initialize the MethodData* corresponding to a given method. |
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1077 MethodData::MethodData(methodHandle method, int size, TRAPS) |
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1078 : _extra_data_lock(Monitor::leaf, "MDO extra data lock") { |
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1079 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC |
0 | 1080 ResourceMark rm; |
1081 // Set the method back-pointer. | |
1082 _method = method(); | |
1783 | 1083 |
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1084 init(); |
0 | 1085 set_creation_mileage(mileage_of(method())); |
1086 | |
1087 // Go through the bytecodes and allocate and initialize the | |
1088 // corresponding data cells. | |
1089 int data_size = 0; | |
1090 int empty_bc_count = 0; // number of bytecodes lacking data | |
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1091 _data[0] = 0; // apparently not set below. |
0 | 1092 BytecodeStream stream(method); |
1093 Bytecodes::Code c; | |
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1094 bool needs_speculative_traps = false; |
0 | 1095 while ((c = stream.next()) >= 0) { |
1096 int size_in_bytes = initialize_data(&stream, data_size); | |
1097 data_size += size_in_bytes; | |
1098 if (size_in_bytes == 0) empty_bc_count += 1; | |
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1099 needs_speculative_traps = needs_speculative_traps || is_speculative_trap_bytecode(c); |
0 | 1100 } |
1101 _data_size = data_size; | |
1102 int object_size = in_bytes(data_offset()) + data_size; | |
1103 | |
1104 // Add some extra DataLayout cells (at least one) to track stray traps. | |
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1105 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count, needs_speculative_traps); |
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1106 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); |
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1107 |
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1108 // Let's zero the space for the extra data |
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1109 Copy::zero_to_bytes(((address)_data) + data_size, extra_size); |
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1110 |
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1111 // Add a cell to record information about modified arguments. |
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1112 // Set up _args_modified array after traps cells so that |
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1113 // the code for traps cells works. |
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1114 DataLayout *dp = data_layout_at(data_size + extra_size); |
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1115 |
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1116 int arg_size = method->size_of_parameters(); |
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1117 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); |
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1118 |
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1119 int arg_data_size = DataLayout::compute_size_in_bytes(arg_size+1); |
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1120 object_size += extra_size + arg_data_size; |
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1121 |
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1122 int parms_cell = ParametersTypeData::compute_cell_count(method()); |
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1123 // If we are profiling parameters, we reserver an area near the end |
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1124 // of the MDO after the slots for bytecodes (because there's no bci |
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1125 // for method entry so they don't fit with the framework for the |
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1126 // profiling of bytecodes). We store the offset within the MDO of |
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1127 // this area (or -1 if no parameter is profiled) |
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1128 if (parms_cell > 0) { |
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1129 object_size += DataLayout::compute_size_in_bytes(parms_cell); |
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1130 _parameters_type_data_di = data_size + extra_size + arg_data_size; |
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1131 DataLayout *dp = data_layout_at(data_size + extra_size + arg_data_size); |
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1132 dp->initialize(DataLayout::parameters_type_data_tag, 0, parms_cell); |
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1133 } else { |
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1134 _parameters_type_data_di = -1; |
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1135 } |
0 | 1136 |
1137 // Set an initial hint. Don't use set_hint_di() because | |
1138 // first_di() may be out of bounds if data_size is 0. | |
1139 // In that situation, _hint_di is never used, but at | |
1140 // least well-defined. | |
1141 _hint_di = first_di(); | |
1142 | |
1143 post_initialize(&stream); | |
1144 | |
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1145 set_size(object_size); |
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1146 } |
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1147 |
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1148 void MethodData::init() { |
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1149 _invocation_counter.init(); |
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1150 _backedge_counter.init(); |
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1151 _invocation_counter_start = 0; |
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1152 _backedge_counter_start = 0; |
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1153 _num_loops = 0; |
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1154 _num_blocks = 0; |
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1155 _highest_comp_level = 0; |
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1156 _highest_osr_comp_level = 0; |
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1157 _would_profile = true; |
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1158 |
17780 | 1159 #if INCLUDE_RTM_OPT |
1160 _rtm_state = NoRTM; // No RTM lock eliding by default | |
1161 if (UseRTMLocking && | |
1162 !CompilerOracle::has_option_string(_method, "NoRTMLockEliding")) { | |
1163 if (CompilerOracle::has_option_string(_method, "UseRTMLockEliding") || !UseRTMDeopt) { | |
1164 // Generate RTM lock eliding code without abort ratio calculation code. | |
1165 _rtm_state = UseRTM; | |
1166 } else if (UseRTMDeopt) { | |
1167 // Generate RTM lock eliding code and include abort ratio calculation | |
1168 // code if UseRTMDeopt is on. | |
1169 _rtm_state = ProfileRTM; | |
1170 } | |
1171 } | |
1172 #endif | |
1173 | |
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1174 // Initialize flags and trap history. |
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1175 _nof_decompiles = 0; |
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1176 _nof_overflow_recompiles = 0; |
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1177 _nof_overflow_traps = 0; |
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1178 clear_escape_info(); |
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1179 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); |
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1180 Copy::zero_to_words((HeapWord*) &_trap_hist, |
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1181 sizeof(_trap_hist) / sizeof(HeapWord)); |
0 | 1182 } |
1183 | |
1184 // Get a measure of how much mileage the method has on it. | |
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1185 int MethodData::mileage_of(Method* method) { |
0 | 1186 int mileage = 0; |
1783 | 1187 if (TieredCompilation) { |
1188 mileage = MAX2(method->invocation_count(), method->backedge_count()); | |
1189 } else { | |
1190 int iic = method->interpreter_invocation_count(); | |
1191 if (mileage < iic) mileage = iic; | |
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1192 MethodCounters* mcs = method->method_counters(); |
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1193 if (mcs != NULL) { |
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1194 InvocationCounter* ic = mcs->invocation_counter(); |
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1195 InvocationCounter* bc = mcs->backedge_counter(); |
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1196 int icval = ic->count(); |
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1197 if (ic->carry()) icval += CompileThreshold; |
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1198 if (mileage < icval) mileage = icval; |
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1199 int bcval = bc->count(); |
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1200 if (bc->carry()) bcval += CompileThreshold; |
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1201 if (mileage < bcval) mileage = bcval; |
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1202 } |
1783 | 1203 } |
0 | 1204 return mileage; |
1205 } | |
1206 | |
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1207 bool MethodData::is_mature() const { |
1783 | 1208 return CompilationPolicy::policy()->is_mature(_method); |
0 | 1209 } |
1210 | |
1211 // Translate a bci to its corresponding data index (di). | |
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1212 address MethodData::bci_to_dp(int bci) { |
0 | 1213 ResourceMark rm; |
1214 ProfileData* data = data_before(bci); | |
1215 ProfileData* prev = NULL; | |
1216 for ( ; is_valid(data); data = next_data(data)) { | |
1217 if (data->bci() >= bci) { | |
1218 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); | |
1219 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); | |
1220 return data->dp(); | |
1221 } | |
1222 prev = data; | |
1223 } | |
1224 return (address)limit_data_position(); | |
1225 } | |
1226 | |
1227 // Translate a bci to its corresponding data, or NULL. | |
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1228 ProfileData* MethodData::bci_to_data(int bci) { |
0 | 1229 ProfileData* data = data_before(bci); |
1230 for ( ; is_valid(data); data = next_data(data)) { | |
1231 if (data->bci() == bci) { | |
1232 set_hint_di(dp_to_di(data->dp())); | |
1233 return data; | |
1234 } else if (data->bci() > bci) { | |
1235 break; | |
1236 } | |
1237 } | |
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1238 return bci_to_extra_data(bci, NULL, false); |
0 | 1239 } |
1240 | |
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1241 DataLayout* MethodData::next_extra(DataLayout* dp) { |
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1242 int nb_cells = 0; |
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1243 switch(dp->tag()) { |
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1244 case DataLayout::bit_data_tag: |
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1245 case DataLayout::no_tag: |
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1246 nb_cells = BitData::static_cell_count(); |
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1247 break; |
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1248 case DataLayout::speculative_trap_data_tag: |
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1249 nb_cells = SpeculativeTrapData::static_cell_count(); |
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1250 break; |
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1251 default: |
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1252 fatal(err_msg("unexpected tag %d", dp->tag())); |
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1253 } |
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1254 return (DataLayout*)((address)dp + DataLayout::compute_size_in_bytes(nb_cells)); |
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1255 } |
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1256 |
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1257 ProfileData* MethodData::bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp, bool concurrent) { |
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1258 DataLayout* end = extra_data_limit(); |
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1259 |
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1260 for (;; dp = next_extra(dp)) { |
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1261 assert(dp < end, "moved past end of extra data"); |
0 | 1262 // No need for "OrderAccess::load_acquire" ops, |
1263 // since the data structure is monotonic. | |
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1264 switch(dp->tag()) { |
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1265 case DataLayout::no_tag: |
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1266 return NULL; |
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1267 case DataLayout::arg_info_data_tag: |
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1268 dp = end; |
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1269 return NULL; // ArgInfoData is at the end of extra data section. |
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1270 case DataLayout::bit_data_tag: |
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1271 if (m == NULL && dp->bci() == bci) { |
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1272 return new BitData(dp); |
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1273 } |
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1274 break; |
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1275 case DataLayout::speculative_trap_data_tag: |
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1276 if (m != NULL) { |
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1277 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1278 // data->method() may be null in case of a concurrent |
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1279 // allocation. Maybe it's for the same method. Try to use that |
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1280 // entry in that case. |
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1281 if (dp->bci() == bci) { |
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1282 if (data->method() == NULL) { |
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1283 assert(concurrent, "impossible because no concurrent allocation"); |
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1284 return NULL; |
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1285 } else if (data->method() == m) { |
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1286 return data; |
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|
1287 } |
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|
1288 } |
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|
1289 } |
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|
1290 break; |
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1291 default: |
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1292 fatal(err_msg("unexpected tag %d", dp->tag())); |
0 | 1293 } |
1294 } | |
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1295 return NULL; |
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1296 } |
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1297 |
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1298 |
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1299 // Translate a bci to its corresponding extra data, or NULL. |
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1300 ProfileData* MethodData::bci_to_extra_data(int bci, Method* m, bool create_if_missing) { |
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1301 // This code assumes an entry for a SpeculativeTrapData is 2 cells |
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1302 assert(2*DataLayout::compute_size_in_bytes(BitData::static_cell_count()) == |
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1303 DataLayout::compute_size_in_bytes(SpeculativeTrapData::static_cell_count()), |
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1304 "code needs to be adjusted"); |
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1305 |
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1306 DataLayout* dp = extra_data_base(); |
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1307 DataLayout* end = extra_data_limit(); |
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1308 |
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1309 // Allocation in the extra data space has to be atomic because not |
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1310 // all entries have the same size and non atomic concurrent |
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1311 // allocation would result in a corrupted extra data space. |
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1312 ProfileData* result = bci_to_extra_data_helper(bci, m, dp, true); |
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1313 if (result != NULL) { |
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1314 return result; |
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1315 } |
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1316 |
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1317 if (create_if_missing && dp < end) { |
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1318 MutexLocker ml(&_extra_data_lock); |
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1319 // Check again now that we have the lock. Another thread may |
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1320 // have added extra data entries. |
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1321 ProfileData* result = bci_to_extra_data_helper(bci, m, dp, false); |
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1322 if (result != NULL || dp >= end) { |
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1323 return result; |
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1324 } |
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1325 |
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1326 assert(dp->tag() == DataLayout::no_tag || (dp->tag() == DataLayout::speculative_trap_data_tag && m != NULL), "should be free"); |
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1327 assert(next_extra(dp)->tag() == DataLayout::no_tag || next_extra(dp)->tag() == DataLayout::arg_info_data_tag, "should be free or arg info"); |
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1328 u1 tag = m == NULL ? DataLayout::bit_data_tag : DataLayout::speculative_trap_data_tag; |
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1329 // SpeculativeTrapData is 2 slots. Make sure we have room. |
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1330 if (m != NULL && next_extra(dp)->tag() != DataLayout::no_tag) { |
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1331 return NULL; |
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1332 } |
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1333 DataLayout temp; |
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1334 temp.initialize(tag, bci, 0); |
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1335 |
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1336 dp->set_header(temp.header()); |
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1337 assert(dp->tag() == tag, "sane"); |
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1338 assert(dp->bci() == bci, "no concurrent allocation"); |
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1339 if (tag == DataLayout::bit_data_tag) { |
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1340 return new BitData(dp); |
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1341 } else { |
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1342 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1343 data->set_method(m); |
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1344 return data; |
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1345 } |
0 | 1346 } |
1347 return NULL; | |
1348 } | |
1349 | |
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1350 ArgInfoData *MethodData::arg_info() { |
45
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1351 DataLayout* dp = extra_data_base(); |
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1352 DataLayout* end = extra_data_limit(); |
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1353 for (; dp < end; dp = next_extra(dp)) { |
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1354 if (dp->tag() == DataLayout::arg_info_data_tag) |
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1355 return new ArgInfoData(dp); |
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1356 } |
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1357 return NULL; |
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1358 } |
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1359 |
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1360 // Printing |
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1361 |
0 | 1362 #ifndef PRODUCT |
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1363 |
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1364 void MethodData::print_on(outputStream* st) const { |
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1365 assert(is_methodData(), "should be method data"); |
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1366 st->print("method data for "); |
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1367 method()->print_value_on(st); |
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1368 st->cr(); |
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1369 print_data_on(st); |
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1370 } |
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1371 |
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1372 #endif //PRODUCT |
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1373 |
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1374 void MethodData::print_value_on(outputStream* st) const { |
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1375 assert(is_methodData(), "should be method data"); |
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1376 st->print("method data for "); |
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1377 method()->print_value_on(st); |
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1378 } |
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1379 |
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1380 #ifndef PRODUCT |
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1381 void MethodData::print_data_on(outputStream* st) const { |
0 | 1382 ResourceMark rm; |
1383 ProfileData* data = first_data(); | |
12962
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1384 if (_parameters_type_data_di != -1) { |
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1385 parameters_type_data()->print_data_on(st); |
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1386 } |
0 | 1387 for ( ; is_valid(data); data = next_data(data)) { |
1388 st->print("%d", dp_to_di(data->dp())); | |
1389 st->fill_to(6); | |
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1390 data->print_data_on(st, this); |
0 | 1391 } |
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1392 st->print_cr("--- Extra data:"); |
0 | 1393 DataLayout* dp = extra_data_base(); |
1394 DataLayout* end = extra_data_limit(); | |
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1395 for (;; dp = next_extra(dp)) { |
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1396 assert(dp < end, "moved past end of extra data"); |
0 | 1397 // No need for "OrderAccess::load_acquire" ops, |
1398 // since the data structure is monotonic. | |
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1399 switch(dp->tag()) { |
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1400 case DataLayout::no_tag: |
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1401 continue; |
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|
1402 case DataLayout::bit_data_tag: |
45
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|
1403 data = new BitData(dp); |
17728
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|
1404 break; |
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|
1405 case DataLayout::speculative_trap_data_tag: |
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8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1406 data = new SpeculativeTrapData(dp); |
b8413a9cbb84
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|
1407 break; |
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|
1408 case DataLayout::arg_info_data_tag: |
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
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|
1409 data = new ArgInfoData(dp); |
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|
1410 dp = end; // ArgInfoData is at the end of extra data section. |
17728
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|
1411 break; |
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|
1412 default: |
b8413a9cbb84
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|
1413 fatal(err_msg("unexpected tag %d", dp->tag())); |
45
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|
1414 } |
0 | 1415 st->print("%d", dp_to_di(data->dp())); |
1416 st->fill_to(6); | |
1417 data->print_data_on(st); | |
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1418 if (dp >= end) return; |
0 | 1419 } |
1420 } | |
1421 #endif | |
1422 | |
7956 | 1423 #if INCLUDE_SERVICES |
1424 // Size Statistics | |
1425 void MethodData::collect_statistics(KlassSizeStats *sz) const { | |
1426 int n = sz->count(this); | |
1427 sz->_method_data_bytes += n; | |
1428 sz->_method_all_bytes += n; | |
1429 sz->_rw_bytes += n; | |
1430 } | |
1431 #endif // INCLUDE_SERVICES | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
1432 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1433 // Verification |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1434 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1435 void MethodData::verify_on(outputStream* st) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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2264
diff
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|
1436 guarantee(is_methodData(), "object must be method data"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1437 // guarantee(m->is_perm(), "should be in permspace"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
1438 this->verify_data_on(st); |
da91efe96a93
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diff
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|
1439 } |
da91efe96a93
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|
1440 |
da91efe96a93
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|
1441 void MethodData::verify_data_on(outputStream* st) { |
0 | 1442 NEEDS_CLEANUP; |
1443 // not yet implemented. | |
1444 } | |
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|
1445 |
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|
1446 bool MethodData::profile_jsr292(methodHandle m, int bci) { |
d13d7aba8c12
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|
1447 if (m->is_compiled_lambda_form()) { |
d13d7aba8c12
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|
1448 return true; |
d13d7aba8c12
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diff
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|
1449 } |
d13d7aba8c12
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|
1450 |
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|
1451 Bytecode_invoke inv(m , bci); |
d13d7aba8c12
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|
1452 return inv.is_invokedynamic() || inv.is_invokehandle(); |
d13d7aba8c12
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|
1453 } |
d13d7aba8c12
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|
1454 |
d13d7aba8c12
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|
1455 int MethodData::profile_arguments_flag() { |
12882
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|
1456 return TypeProfileLevel % 10; |
12875
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|
1457 } |
d13d7aba8c12
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|
1458 |
d13d7aba8c12
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|
1459 bool MethodData::profile_arguments() { |
d13d7aba8c12
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|
1460 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; |
d13d7aba8c12
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|
1461 } |
d13d7aba8c12
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|
1462 |
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|
1463 bool MethodData::profile_arguments_jsr292_only() { |
d13d7aba8c12
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diff
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|
1464 return profile_arguments_flag() == type_profile_jsr292; |
d13d7aba8c12
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diff
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|
1465 } |
d13d7aba8c12
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|
1466 |
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|
1467 bool MethodData::profile_all_arguments() { |
d13d7aba8c12
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|
1468 return profile_arguments_flag() == type_profile_all; |
d13d7aba8c12
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|
1469 } |
d13d7aba8c12
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diff
changeset
|
1470 |
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changeset
|
1471 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { |
d13d7aba8c12
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diff
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|
1472 if (!profile_arguments()) { |
d13d7aba8c12
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diff
changeset
|
1473 return false; |
d13d7aba8c12
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diff
changeset
|
1474 } |
d13d7aba8c12
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diff
changeset
|
1475 |
d13d7aba8c12
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|
1476 if (profile_all_arguments()) { |
d13d7aba8c12
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diff
changeset
|
1477 return true; |
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
1478 } |
d13d7aba8c12
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diff
changeset
|
1479 |
d13d7aba8c12
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changeset
|
1480 assert(profile_arguments_jsr292_only(), "inconsistent"); |
d13d7aba8c12
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diff
changeset
|
1481 return profile_jsr292(m, bci); |
d13d7aba8c12
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diff
changeset
|
1482 } |
d13d7aba8c12
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|
1483 |
12882
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|
1484 int MethodData::profile_return_flag() { |
12962
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|
1485 return (TypeProfileLevel % 100) / 10; |
12882
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|
1486 } |
ce0cc25bc5e2
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|
1487 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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|
1488 bool MethodData::profile_return() { |
ce0cc25bc5e2
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changeset
|
1489 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; |
ce0cc25bc5e2
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|
1490 } |
ce0cc25bc5e2
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|
1491 |
ce0cc25bc5e2
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|
1492 bool MethodData::profile_return_jsr292_only() { |
ce0cc25bc5e2
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|
1493 return profile_return_flag() == type_profile_jsr292; |
ce0cc25bc5e2
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|
1494 } |
ce0cc25bc5e2
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roland
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12875
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|
1495 |
ce0cc25bc5e2
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|
1496 bool MethodData::profile_all_return() { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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12875
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|
1497 return profile_return_flag() == type_profile_all; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1498 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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|
1499 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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|
1500 bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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12875
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|
1501 if (!profile_return()) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
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|
1502 return false; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1503 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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changeset
|
1504 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1505 if (profile_all_return()) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1506 return true; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1507 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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changeset
|
1508 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1509 assert(profile_return_jsr292_only(), "inconsistent"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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12875
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|
1510 return profile_jsr292(m, bci); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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|
1511 } |
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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12882
diff
changeset
|
1512 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1513 int MethodData::profile_parameters_flag() { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1514 return TypeProfileLevel / 100; |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1515 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1516 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1517 bool MethodData::profile_parameters() { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1518 return profile_parameters_flag() > no_type_profile && profile_parameters_flag() <= type_profile_all; |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1519 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1520 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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12882
diff
changeset
|
1521 bool MethodData::profile_parameters_jsr292_only() { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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12882
diff
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|
1522 return profile_parameters_flag() == type_profile_jsr292; |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1523 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1524 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1525 bool MethodData::profile_all_parameters() { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1526 return profile_parameters_flag() == type_profile_all; |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1527 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1528 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1529 bool MethodData::profile_parameters_for_method(methodHandle m) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1530 if (!profile_parameters()) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1531 return false; |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1532 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1533 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1534 if (profile_all_parameters()) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1535 return true; |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1536 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1537 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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12882
diff
changeset
|
1538 assert(profile_parameters_jsr292_only(), "inconsistent"); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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12882
diff
changeset
|
1539 return m->is_compiled_lambda_form(); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1540 } |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
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|
1541 |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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changeset
|
1542 void MethodData::clean_extra_data_helper(DataLayout* dp, int shift, bool reset) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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|
1543 if (shift == 0) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1544 return; |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1545 } |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1546 if (!reset) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
changeset
|
1547 // Move all cells of trap entry at dp left by "shift" cells |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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changeset
|
1548 intptr_t* start = (intptr_t*)dp; |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
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|
1549 intptr_t* end = (intptr_t*)next_extra(dp); |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
changeset
|
1550 for (intptr_t* ptr = start; ptr < end; ptr++) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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13080
diff
changeset
|
1551 *(ptr-shift) = *ptr; |
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1552 } |
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1553 } else { |
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1554 // Reset "shift" cells stopping at dp |
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1555 intptr_t* start = ((intptr_t*)dp) - shift; |
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1556 intptr_t* end = (intptr_t*)dp; |
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1557 for (intptr_t* ptr = start; ptr < end; ptr++) { |
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1558 *ptr = 0; |
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1559 } |
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1560 } |
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1561 } |
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1562 |
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1563 // Remove SpeculativeTrapData entries that reference an unloaded |
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1564 // method |
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1565 void MethodData::clean_extra_data(BoolObjectClosure* is_alive) { |
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1566 DataLayout* dp = extra_data_base(); |
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1567 DataLayout* end = extra_data_limit(); |
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1568 |
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1569 int shift = 0; |
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1570 for (; dp < end; dp = next_extra(dp)) { |
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1571 switch(dp->tag()) { |
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1572 case DataLayout::speculative_trap_data_tag: { |
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1573 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1574 Method* m = data->method(); |
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1575 assert(m != NULL, "should have a method"); |
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1576 if (!m->method_holder()->is_loader_alive(is_alive)) { |
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1577 // "shift" accumulates the number of cells for dead |
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1578 // SpeculativeTrapData entries that have been seen so |
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1579 // far. Following entries must be shifted left by that many |
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1580 // cells to remove the dead SpeculativeTrapData entries. |
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1581 shift += (int)((intptr_t*)next_extra(dp) - (intptr_t*)dp); |
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1582 } else { |
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1583 // Shift this entry left if it follows dead |
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1584 // SpeculativeTrapData entries |
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1585 clean_extra_data_helper(dp, shift); |
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1586 } |
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1587 break; |
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1588 } |
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1589 case DataLayout::bit_data_tag: |
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1590 // Shift this entry left if it follows dead SpeculativeTrapData |
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1591 // entries |
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1592 clean_extra_data_helper(dp, shift); |
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1593 continue; |
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1594 case DataLayout::no_tag: |
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1595 case DataLayout::arg_info_data_tag: |
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1596 // We are at end of the live trap entries. The previous "shift" |
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1597 // cells contain entries that are either dead or were shifted |
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1598 // left. They need to be reset to no_tag |
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1599 clean_extra_data_helper(dp, shift, true); |
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1600 return; |
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1601 default: |
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1602 fatal(err_msg("unexpected tag %d", dp->tag())); |
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1603 } |
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1604 } |
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1605 } |
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1606 |
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1607 // Verify there's no unloaded method referenced by a |
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1608 // SpeculativeTrapData entry |
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1609 void MethodData::verify_extra_data_clean(BoolObjectClosure* is_alive) { |
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1610 #ifdef ASSERT |
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1611 DataLayout* dp = extra_data_base(); |
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1612 DataLayout* end = extra_data_limit(); |
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1613 |
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1614 for (; dp < end; dp = next_extra(dp)) { |
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1615 switch(dp->tag()) { |
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1616 case DataLayout::speculative_trap_data_tag: { |
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1617 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1618 Method* m = data->method(); |
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1619 assert(m != NULL && m->method_holder()->is_loader_alive(is_alive), "Method should exist"); |
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1620 break; |
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1621 } |
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1622 case DataLayout::bit_data_tag: |
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1623 continue; |
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1624 case DataLayout::no_tag: |
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1625 case DataLayout::arg_info_data_tag: |
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1626 return; |
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1627 default: |
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1628 fatal(err_msg("unexpected tag %d", dp->tag())); |
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1629 } |
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1630 } |
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1631 #endif |
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1632 } |
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1633 |
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1634 void MethodData::clean_method_data(BoolObjectClosure* is_alive) { |
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1635 for (ProfileData* data = first_data(); |
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1636 is_valid(data); |
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1637 data = next_data(data)) { |
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1638 data->clean_weak_klass_links(is_alive); |
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1639 } |
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1640 ParametersTypeData* parameters = parameters_type_data(); |
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1641 if (parameters != NULL) { |
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1642 parameters->clean_weak_klass_links(is_alive); |
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1643 } |
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1644 |
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1645 clean_extra_data(is_alive); |
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1646 verify_extra_data_clean(is_alive); |
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1647 } |