Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.cpp @ 20228:f72d8917322a
8050978: Fix bad field access check in C1 and C2
Summary: JCK8 test vm/constantpool/accessControl/accessControl004/accessControl00402m3/accessControl00402m3.html fails with -Xbatch -Xcomp due to bad field access check in C1 and C2. Fix: In ciField::ciField(), just before the canonical holder is stored into the _holder variable (and which is used by ciField::will_link()) perform an additional access check with the holder declared in the class file. If this check fails, store the declared holder instead and ciField::will_link() will bail out compilation for this field later on. Then, the interpreter will throw an PrivilegedAccessException at runtime.
Reviewed-by: kvn, vlivanov
Contributed-by: andreas.schoesser@sap.com
author | goetz |
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date | Fri, 18 Jul 2014 09:04:01 +0200 |
parents | ce8f6bb717c9 |
children | 631667807de7 |
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" | |
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37 #include "runtime/orderAccess.inline.hpp" |
0 | 38 |
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39 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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40 |
0 | 41 // ================================================================== |
42 // DataLayout | |
43 // | |
44 // Overlay for generic profiling data. | |
45 | |
46 // Some types of data layouts need a length field. | |
47 bool DataLayout::needs_array_len(u1 tag) { | |
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48 return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag) || (tag == parameters_type_data_tag); |
0 | 49 } |
50 | |
51 // Perform generic initialization of the data. More specific | |
52 // initialization occurs in overrides of ProfileData::post_initialize. | |
53 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) { | |
54 _header._bits = (intptr_t)0; | |
55 _header._struct._tag = tag; | |
56 _header._struct._bci = bci; | |
57 for (int i = 0; i < cell_count; i++) { | |
58 set_cell_at(i, (intptr_t)0); | |
59 } | |
60 if (needs_array_len(tag)) { | |
61 set_cell_at(ArrayData::array_len_off_set, cell_count - 1); // -1 for header. | |
62 } | |
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63 if (tag == call_type_data_tag) { |
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64 CallTypeData::initialize(this, cell_count); |
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65 } else if (tag == virtual_call_type_data_tag) { |
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66 VirtualCallTypeData::initialize(this, cell_count); |
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67 } |
0 | 68 } |
69 | |
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70 void DataLayout::clean_weak_klass_links(BoolObjectClosure* cl) { |
941 | 71 ResourceMark m; |
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72 data_in()->clean_weak_klass_links(cl); |
941 | 73 } |
74 | |
75 | |
0 | 76 // ================================================================== |
77 // ProfileData | |
78 // | |
79 // A ProfileData object is created to refer to a section of profiling | |
80 // data in a structured way. | |
81 | |
82 // Constructor for invalid ProfileData. | |
83 ProfileData::ProfileData() { | |
84 _data = NULL; | |
85 } | |
86 | |
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87 char* ProfileData::print_data_on_helper(const MethodData* md) const { |
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88 DataLayout* dp = md->extra_data_base(); |
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89 DataLayout* end = md->extra_data_limit(); |
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90 stringStream ss; |
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91 for (;; dp = MethodData::next_extra(dp)) { |
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92 assert(dp < end, "moved past end of extra data"); |
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93 switch(dp->tag()) { |
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94 case DataLayout::speculative_trap_data_tag: |
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95 if (dp->bci() == bci()) { |
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96 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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97 int trap = data->trap_state(); |
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98 char buf[100]; |
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99 ss.print("trap/"); |
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100 data->method()->print_short_name(&ss); |
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101 ss.print("(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); |
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102 } |
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103 break; |
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104 case DataLayout::bit_data_tag: |
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105 break; |
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106 case DataLayout::no_tag: |
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107 case DataLayout::arg_info_data_tag: |
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108 return ss.as_string(); |
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109 break; |
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110 default: |
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111 fatal(err_msg("unexpected tag %d", dp->tag())); |
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112 } |
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113 } |
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114 return NULL; |
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115 } |
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116 |
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117 void ProfileData::print_data_on(outputStream* st, const MethodData* md) const { |
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118 print_data_on(st, print_data_on_helper(md)); |
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119 } |
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120 |
0 | 121 #ifndef PRODUCT |
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122 void ProfileData::print_shared(outputStream* st, const char* name, const char* extra) const { |
0 | 123 st->print("bci: %d", bci()); |
124 st->fill_to(tab_width_one); | |
125 st->print("%s", name); | |
126 tab(st); | |
127 int trap = trap_state(); | |
128 if (trap != 0) { | |
129 char buf[100]; | |
130 st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); | |
131 } | |
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132 if (extra != NULL) { |
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133 st->print("%s", extra); |
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134 } |
0 | 135 int flags = data()->flags(); |
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136 if (flags != 0) { |
0 | 137 st->print("flags(%d) ", flags); |
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138 } |
0 | 139 } |
140 | |
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141 void ProfileData::tab(outputStream* st, bool first) const { |
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142 st->fill_to(first ? tab_width_one : tab_width_two); |
0 | 143 } |
144 #endif // !PRODUCT | |
145 | |
146 // ================================================================== | |
147 // BitData | |
148 // | |
149 // A BitData corresponds to a one-bit flag. This is used to indicate | |
150 // whether a checkcast bytecode has seen a null value. | |
151 | |
152 | |
153 #ifndef PRODUCT | |
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154 void BitData::print_data_on(outputStream* st, const char* extra) const { |
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155 print_shared(st, "BitData", extra); |
0 | 156 } |
157 #endif // !PRODUCT | |
158 | |
159 // ================================================================== | |
160 // CounterData | |
161 // | |
162 // A CounterData corresponds to a simple counter. | |
163 | |
164 #ifndef PRODUCT | |
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165 void CounterData::print_data_on(outputStream* st, const char* extra) const { |
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166 print_shared(st, "CounterData", extra); |
0 | 167 st->print_cr("count(%u)", count()); |
168 } | |
169 #endif // !PRODUCT | |
170 | |
171 // ================================================================== | |
172 // JumpData | |
173 // | |
174 // A JumpData is used to access profiling information for a direct | |
175 // branch. It is a counter, used for counting the number of branches, | |
176 // plus a data displacement, used for realigning the data pointer to | |
177 // the corresponding target bci. | |
178 | |
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179 void JumpData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 180 assert(stream->bci() == bci(), "wrong pos"); |
181 int target; | |
182 Bytecodes::Code c = stream->code(); | |
183 if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) { | |
184 target = stream->dest_w(); | |
185 } else { | |
186 target = stream->dest(); | |
187 } | |
188 int my_di = mdo->dp_to_di(dp()); | |
189 int target_di = mdo->bci_to_di(target); | |
190 int offset = target_di - my_di; | |
191 set_displacement(offset); | |
192 } | |
193 | |
194 #ifndef PRODUCT | |
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195 void JumpData::print_data_on(outputStream* st, const char* extra) const { |
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196 print_shared(st, "JumpData", extra); |
0 | 197 st->print_cr("taken(%u) displacement(%d)", taken(), displacement()); |
198 } | |
199 #endif // !PRODUCT | |
200 | |
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201 int TypeStackSlotEntries::compute_cell_count(Symbol* signature, bool include_receiver, int max) { |
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202 // Parameter profiling include the receiver |
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203 int args_count = include_receiver ? 1 : 0; |
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204 ResourceMark rm; |
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205 SignatureStream ss(signature); |
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206 args_count += ss.reference_parameter_count(); |
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207 args_count = MIN2(args_count, max); |
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208 return args_count * per_arg_cell_count; |
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209 } |
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210 |
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211 int TypeEntriesAtCall::compute_cell_count(BytecodeStream* stream) { |
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212 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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213 assert(TypeStackSlotEntries::per_arg_count() > ReturnTypeEntry::static_cell_count(), "code to test for arguments/results broken"); |
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214 Bytecode_invoke inv(stream->method(), stream->bci()); |
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215 int args_cell = 0; |
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216 if (arguments_profiling_enabled()) { |
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217 args_cell = TypeStackSlotEntries::compute_cell_count(inv.signature(), false, TypeProfileArgsLimit); |
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218 } |
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219 int ret_cell = 0; |
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220 if (return_profiling_enabled() && (inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY)) { |
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221 ret_cell = ReturnTypeEntry::static_cell_count(); |
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222 } |
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223 int header_cell = 0; |
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224 if (args_cell + ret_cell > 0) { |
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225 header_cell = header_cell_count(); |
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226 } |
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227 |
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228 return header_cell + args_cell + ret_cell; |
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229 } |
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230 |
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231 class ArgumentOffsetComputer : public SignatureInfo { |
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232 private: |
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233 int _max; |
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234 GrowableArray<int> _offsets; |
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235 |
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236 void set(int size, BasicType type) { _size += size; } |
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237 void do_object(int begin, int end) { |
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238 if (_offsets.length() < _max) { |
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239 _offsets.push(_size); |
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240 } |
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241 SignatureInfo::do_object(begin, end); |
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242 } |
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243 void do_array (int begin, int end) { |
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244 if (_offsets.length() < _max) { |
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245 _offsets.push(_size); |
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246 } |
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247 SignatureInfo::do_array(begin, end); |
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248 } |
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249 |
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250 public: |
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251 ArgumentOffsetComputer(Symbol* signature, int max) |
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252 : SignatureInfo(signature), _max(max), _offsets(Thread::current(), max) { |
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253 } |
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254 |
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255 int total() { lazy_iterate_parameters(); return _size; } |
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256 |
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257 int off_at(int i) const { return _offsets.at(i); } |
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258 }; |
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259 |
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260 void TypeStackSlotEntries::post_initialize(Symbol* signature, bool has_receiver, bool include_receiver) { |
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261 ResourceMark rm; |
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262 int start = 0; |
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263 // Parameter profiling include the receiver |
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264 if (include_receiver && has_receiver) { |
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265 set_stack_slot(0, 0); |
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266 set_type(0, type_none()); |
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267 start += 1; |
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268 } |
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269 ArgumentOffsetComputer aos(signature, _number_of_entries-start); |
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270 aos.total(); |
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271 for (int i = start; i < _number_of_entries; i++) { |
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272 set_stack_slot(i, aos.off_at(i-start) + (has_receiver ? 1 : 0)); |
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273 set_type(i, type_none()); |
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274 } |
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275 } |
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276 |
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277 void CallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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278 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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279 Bytecode_invoke inv(stream->method(), stream->bci()); |
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280 |
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281 SignatureStream ss(inv.signature()); |
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282 if (has_arguments()) { |
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283 #ifdef ASSERT |
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284 ResourceMark rm; |
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285 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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286 assert(count > 0, "room for args type but none found?"); |
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287 check_number_of_arguments(count); |
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288 #endif |
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289 _args.post_initialize(inv.signature(), inv.has_receiver(), false); |
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290 } |
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291 |
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292 if (has_return()) { |
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293 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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294 _ret.post_initialize(); |
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295 } |
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296 } |
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297 |
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298 void VirtualCallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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299 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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300 Bytecode_invoke inv(stream->method(), stream->bci()); |
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301 |
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302 if (has_arguments()) { |
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303 #ifdef ASSERT |
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304 ResourceMark rm; |
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305 SignatureStream ss(inv.signature()); |
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306 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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307 assert(count > 0, "room for args type but none found?"); |
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308 check_number_of_arguments(count); |
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309 #endif |
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310 _args.post_initialize(inv.signature(), inv.has_receiver(), false); |
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311 } |
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312 |
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313 if (has_return()) { |
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314 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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315 _ret.post_initialize(); |
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316 } |
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317 } |
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318 |
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319 bool TypeEntries::is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p) { |
13080 | 320 Klass* k = (Klass*)klass_part(p); |
321 return k != NULL && k->is_loader_alive(is_alive_cl); | |
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322 } |
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323 |
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324 void TypeStackSlotEntries::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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325 for (int i = 0; i < _number_of_entries; i++) { |
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326 intptr_t p = type(i); |
13080 | 327 if (!is_loader_alive(is_alive_cl, p)) { |
328 set_type(i, with_status((Klass*)NULL, p)); | |
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329 } |
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330 } |
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331 } |
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332 |
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333 void ReturnTypeEntry::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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334 intptr_t p = type(); |
13080 | 335 if (!is_loader_alive(is_alive_cl, p)) { |
336 set_type(with_status((Klass*)NULL, p)); | |
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337 } |
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338 } |
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339 |
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340 bool TypeEntriesAtCall::return_profiling_enabled() { |
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341 return MethodData::profile_return(); |
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342 } |
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343 |
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344 bool TypeEntriesAtCall::arguments_profiling_enabled() { |
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345 return MethodData::profile_arguments(); |
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346 } |
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347 |
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348 #ifndef PRODUCT |
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349 void TypeEntries::print_klass(outputStream* st, intptr_t k) { |
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350 if (is_type_none(k)) { |
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351 st->print("none"); |
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352 } else if (is_type_unknown(k)) { |
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353 st->print("unknown"); |
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354 } else { |
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355 valid_klass(k)->print_value_on(st); |
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356 } |
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357 if (was_null_seen(k)) { |
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358 st->print(" (null seen)"); |
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359 } |
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360 } |
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361 |
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362 void TypeStackSlotEntries::print_data_on(outputStream* st) const { |
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363 for (int i = 0; i < _number_of_entries; i++) { |
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364 _pd->tab(st); |
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365 st->print("%d: stack(%u) ", i, stack_slot(i)); |
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366 print_klass(st, type(i)); |
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367 st->cr(); |
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368 } |
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369 } |
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370 |
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371 void ReturnTypeEntry::print_data_on(outputStream* st) const { |
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372 _pd->tab(st); |
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373 print_klass(st, type()); |
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374 st->cr(); |
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375 } |
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376 |
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377 void CallTypeData::print_data_on(outputStream* st, const char* extra) const { |
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378 CounterData::print_data_on(st, extra); |
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379 if (has_arguments()) { |
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380 tab(st, true); |
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381 st->print("argument types"); |
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382 _args.print_data_on(st); |
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383 } |
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384 if (has_return()) { |
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385 tab(st, true); |
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386 st->print("return type"); |
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387 _ret.print_data_on(st); |
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388 } |
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389 } |
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390 |
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391 void VirtualCallTypeData::print_data_on(outputStream* st, const char* extra) const { |
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392 VirtualCallData::print_data_on(st, extra); |
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393 if (has_arguments()) { |
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394 tab(st, true); |
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395 st->print("argument types"); |
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396 _args.print_data_on(st); |
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397 } |
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398 if (has_return()) { |
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399 tab(st, true); |
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400 st->print("return type"); |
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401 _ret.print_data_on(st); |
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402 } |
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403 } |
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404 #endif |
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405 |
0 | 406 // ================================================================== |
407 // ReceiverTypeData | |
408 // | |
409 // A ReceiverTypeData is used to access profiling information about a | |
410 // dynamic type check. It consists of a counter which counts the total times | |
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411 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 412 // which are used to store a type profile for the receiver of the check. |
413 | |
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414 void ReceiverTypeData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
941 | 415 for (uint row = 0; row < row_limit(); row++) { |
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416 Klass* p = receiver(row); |
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417 if (p != NULL && !p->is_loader_alive(is_alive_cl)) { |
941 | 418 clear_row(row); |
419 } | |
420 } | |
421 } | |
422 | |
0 | 423 #ifndef PRODUCT |
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424 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const { |
0 | 425 uint row; |
426 int entries = 0; | |
427 for (row = 0; row < row_limit(); row++) { | |
428 if (receiver(row) != NULL) entries++; | |
429 } | |
430 st->print_cr("count(%u) entries(%u)", count(), entries); | |
1783 | 431 int total = count(); |
432 for (row = 0; row < row_limit(); row++) { | |
433 if (receiver(row) != NULL) { | |
434 total += receiver_count(row); | |
435 } | |
436 } | |
0 | 437 for (row = 0; row < row_limit(); row++) { |
438 if (receiver(row) != NULL) { | |
439 tab(st); | |
440 receiver(row)->print_value_on(st); | |
1783 | 441 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total); |
0 | 442 } |
443 } | |
444 } | |
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445 void ReceiverTypeData::print_data_on(outputStream* st, const char* extra) const { |
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446 print_shared(st, "ReceiverTypeData", extra); |
0 | 447 print_receiver_data_on(st); |
448 } | |
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449 void VirtualCallData::print_data_on(outputStream* st, const char* extra) const { |
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450 print_shared(st, "VirtualCallData", extra); |
0 | 451 print_receiver_data_on(st); |
452 } | |
453 #endif // !PRODUCT | |
454 | |
455 // ================================================================== | |
456 // RetData | |
457 // | |
458 // A RetData is used to access profiling information for a ret bytecode. | |
459 // It is composed of a count of the number of times that the ret has | |
460 // been executed, followed by a series of triples of the form | |
461 // (bci, count, di) which count the number of times that some bci was the | |
462 // target of the ret and cache a corresponding displacement. | |
463 | |
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464 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 465 for (uint row = 0; row < row_limit(); row++) { |
466 set_bci_displacement(row, -1); | |
467 set_bci(row, no_bci); | |
468 } | |
469 // release so other threads see a consistent state. bci is used as | |
470 // a valid flag for bci_displacement. | |
471 OrderAccess::release(); | |
472 } | |
473 | |
474 // This routine needs to atomically update the RetData structure, so the | |
475 // caller needs to hold the RetData_lock before it gets here. Since taking | |
476 // the lock can block (and allow GC) and since RetData is a ProfileData is a | |
477 // wrapper around a derived oop, taking the lock in _this_ method will | |
478 // basically cause the 'this' pointer's _data field to contain junk after the | |
479 // lock. We require the caller to take the lock before making the ProfileData | |
480 // structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret | |
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481 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) { |
0 | 482 // First find the mdp which corresponds to the return bci. |
483 address mdp = h_mdo->bci_to_dp(return_bci); | |
484 | |
485 // Now check to see if any of the cache slots are open. | |
486 for (uint row = 0; row < row_limit(); row++) { | |
487 if (bci(row) == no_bci) { | |
488 set_bci_displacement(row, mdp - dp()); | |
489 set_bci_count(row, DataLayout::counter_increment); | |
490 // Barrier to ensure displacement is written before the bci; allows | |
491 // the interpreter to read displacement without fear of race condition. | |
492 release_set_bci(row, return_bci); | |
493 break; | |
494 } | |
495 } | |
496 return mdp; | |
497 } | |
498 | |
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499 #ifdef CC_INTERP |
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500 DataLayout* RetData::advance(MethodData *md, int bci) { |
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501 return (DataLayout*) md->bci_to_dp(bci); |
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502 } |
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503 #endif // CC_INTERP |
0 | 504 |
505 #ifndef PRODUCT | |
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506 void RetData::print_data_on(outputStream* st, const char* extra) const { |
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507 print_shared(st, "RetData", extra); |
0 | 508 uint row; |
509 int entries = 0; | |
510 for (row = 0; row < row_limit(); row++) { | |
511 if (bci(row) != no_bci) entries++; | |
512 } | |
513 st->print_cr("count(%u) entries(%u)", count(), entries); | |
514 for (row = 0; row < row_limit(); row++) { | |
515 if (bci(row) != no_bci) { | |
516 tab(st); | |
517 st->print_cr("bci(%d: count(%u) displacement(%d))", | |
518 bci(row), bci_count(row), bci_displacement(row)); | |
519 } | |
520 } | |
521 } | |
522 #endif // !PRODUCT | |
523 | |
524 // ================================================================== | |
525 // BranchData | |
526 // | |
527 // A BranchData is used to access profiling data for a two-way branch. | |
528 // It consists of taken and not_taken counts as well as a data displacement | |
529 // for the taken case. | |
530 | |
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531 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 532 assert(stream->bci() == bci(), "wrong pos"); |
533 int target = stream->dest(); | |
534 int my_di = mdo->dp_to_di(dp()); | |
535 int target_di = mdo->bci_to_di(target); | |
536 int offset = target_di - my_di; | |
537 set_displacement(offset); | |
538 } | |
539 | |
540 #ifndef PRODUCT | |
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541 void BranchData::print_data_on(outputStream* st, const char* extra) const { |
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542 print_shared(st, "BranchData", extra); |
0 | 543 st->print_cr("taken(%u) displacement(%d)", |
544 taken(), displacement()); | |
545 tab(st); | |
546 st->print_cr("not taken(%u)", not_taken()); | |
547 } | |
548 #endif | |
549 | |
550 // ================================================================== | |
551 // MultiBranchData | |
552 // | |
553 // A MultiBranchData is used to access profiling information for | |
554 // a multi-way branch (*switch bytecodes). It consists of a series | |
555 // of (count, displacement) pairs, which count the number of times each | |
556 // case was taken and specify the data displacment for each branch target. | |
557 | |
558 int MultiBranchData::compute_cell_count(BytecodeStream* stream) { | |
559 int cell_count = 0; | |
560 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 561 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
562 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default | |
0 | 563 } else { |
2142 | 564 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
565 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default | |
0 | 566 } |
567 return cell_count; | |
568 } | |
569 | |
570 void MultiBranchData::post_initialize(BytecodeStream* stream, | |
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571 MethodData* mdo) { |
0 | 572 assert(stream->bci() == bci(), "wrong pos"); |
573 int target; | |
574 int my_di; | |
575 int target_di; | |
576 int offset; | |
577 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 578 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
579 int len = sw.length(); | |
0 | 580 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); |
581 for (int count = 0; count < len; count++) { | |
2142 | 582 target = sw.dest_offset_at(count) + bci(); |
0 | 583 my_di = mdo->dp_to_di(dp()); |
584 target_di = mdo->bci_to_di(target); | |
585 offset = target_di - my_di; | |
586 set_displacement_at(count, offset); | |
587 } | |
2142 | 588 target = sw.default_offset() + bci(); |
0 | 589 my_di = mdo->dp_to_di(dp()); |
590 target_di = mdo->bci_to_di(target); | |
591 offset = target_di - my_di; | |
592 set_default_displacement(offset); | |
593 | |
594 } else { | |
2142 | 595 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
596 int npairs = sw.number_of_pairs(); | |
0 | 597 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); |
598 for (int count = 0; count < npairs; count++) { | |
2142 | 599 LookupswitchPair pair = sw.pair_at(count); |
600 target = pair.offset() + bci(); | |
0 | 601 my_di = mdo->dp_to_di(dp()); |
602 target_di = mdo->bci_to_di(target); | |
603 offset = target_di - my_di; | |
604 set_displacement_at(count, offset); | |
605 } | |
2142 | 606 target = sw.default_offset() + bci(); |
0 | 607 my_di = mdo->dp_to_di(dp()); |
608 target_di = mdo->bci_to_di(target); | |
609 offset = target_di - my_di; | |
610 set_default_displacement(offset); | |
611 } | |
612 } | |
613 | |
614 #ifndef PRODUCT | |
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615 void MultiBranchData::print_data_on(outputStream* st, const char* extra) const { |
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616 print_shared(st, "MultiBranchData", extra); |
0 | 617 st->print_cr("default_count(%u) displacement(%d)", |
618 default_count(), default_displacement()); | |
619 int cases = number_of_cases(); | |
620 for (int i = 0; i < cases; i++) { | |
621 tab(st); | |
622 st->print_cr("count(%u) displacement(%d)", | |
623 count_at(i), displacement_at(i)); | |
624 } | |
625 } | |
626 #endif | |
627 | |
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628 #ifndef PRODUCT |
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629 void ArgInfoData::print_data_on(outputStream* st, const char* extra) const { |
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630 print_shared(st, "ArgInfoData", extra); |
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631 int nargs = number_of_args(); |
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632 for (int i = 0; i < nargs; i++) { |
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633 st->print(" 0x%x", arg_modified(i)); |
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634 } |
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635 st->cr(); |
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636 } |
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637 |
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638 #endif |
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639 |
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640 int ParametersTypeData::compute_cell_count(Method* m) { |
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641 if (!MethodData::profile_parameters_for_method(m)) { |
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642 return 0; |
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643 } |
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644 int max = TypeProfileParmsLimit == -1 ? INT_MAX : TypeProfileParmsLimit; |
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645 int obj_args = TypeStackSlotEntries::compute_cell_count(m->signature(), !m->is_static(), max); |
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646 if (obj_args > 0) { |
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647 return obj_args + 1; // 1 cell for array len |
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648 } |
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649 return 0; |
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650 } |
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651 |
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652 void ParametersTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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653 _parameters.post_initialize(mdo->method()->signature(), !mdo->method()->is_static(), true); |
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654 } |
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655 |
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656 bool ParametersTypeData::profiling_enabled() { |
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657 return MethodData::profile_parameters(); |
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658 } |
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659 |
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660 #ifndef PRODUCT |
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661 void ParametersTypeData::print_data_on(outputStream* st, const char* extra) const { |
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662 st->print("parameter types"); // FIXME extra ignored? |
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663 _parameters.print_data_on(st); |
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664 } |
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665 |
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666 void SpeculativeTrapData::print_data_on(outputStream* st, const char* extra) const { |
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667 print_shared(st, "SpeculativeTrapData", extra); |
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668 tab(st); |
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669 method()->print_short_name(st); |
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670 st->cr(); |
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671 } |
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672 #endif |
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673 |
0 | 674 // ================================================================== |
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675 // MethodData* |
0 | 676 // |
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677 // A MethodData* holds information which has been collected about |
0 | 678 // a method. |
679 | |
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680 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { |
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681 int size = MethodData::compute_allocation_size_in_words(method); |
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682 |
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683 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) |
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684 MethodData(method(), size, CHECK_NULL); |
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685 } |
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686 |
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687 int MethodData::bytecode_cell_count(Bytecodes::Code code) { |
8860 | 688 #if defined(COMPILER1) && !defined(COMPILER2) |
689 return no_profile_data; | |
690 #else | |
0 | 691 switch (code) { |
692 case Bytecodes::_checkcast: | |
693 case Bytecodes::_instanceof: | |
694 case Bytecodes::_aastore: | |
695 if (TypeProfileCasts) { | |
696 return ReceiverTypeData::static_cell_count(); | |
697 } else { | |
698 return BitData::static_cell_count(); | |
699 } | |
700 case Bytecodes::_invokespecial: | |
701 case Bytecodes::_invokestatic: | |
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702 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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703 return variable_cell_count; |
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704 } else { |
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705 return CounterData::static_cell_count(); |
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|
706 } |
0 | 707 case Bytecodes::_goto: |
708 case Bytecodes::_goto_w: | |
709 case Bytecodes::_jsr: | |
710 case Bytecodes::_jsr_w: | |
711 return JumpData::static_cell_count(); | |
712 case Bytecodes::_invokevirtual: | |
713 case Bytecodes::_invokeinterface: | |
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714 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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715 return variable_cell_count; |
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|
716 } else { |
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717 return VirtualCallData::static_cell_count(); |
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|
718 } |
726
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|
719 case Bytecodes::_invokedynamic: |
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720 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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721 return variable_cell_count; |
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722 } else { |
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723 return CounterData::static_cell_count(); |
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|
724 } |
0 | 725 case Bytecodes::_ret: |
726 return RetData::static_cell_count(); | |
727 case Bytecodes::_ifeq: | |
728 case Bytecodes::_ifne: | |
729 case Bytecodes::_iflt: | |
730 case Bytecodes::_ifge: | |
731 case Bytecodes::_ifgt: | |
732 case Bytecodes::_ifle: | |
733 case Bytecodes::_if_icmpeq: | |
734 case Bytecodes::_if_icmpne: | |
735 case Bytecodes::_if_icmplt: | |
736 case Bytecodes::_if_icmpge: | |
737 case Bytecodes::_if_icmpgt: | |
738 case Bytecodes::_if_icmple: | |
739 case Bytecodes::_if_acmpeq: | |
740 case Bytecodes::_if_acmpne: | |
741 case Bytecodes::_ifnull: | |
742 case Bytecodes::_ifnonnull: | |
743 return BranchData::static_cell_count(); | |
744 case Bytecodes::_lookupswitch: | |
745 case Bytecodes::_tableswitch: | |
746 return variable_cell_count; | |
747 } | |
748 return no_profile_data; | |
8860 | 749 #endif |
0 | 750 } |
751 | |
752 // Compute the size of the profiling information corresponding to | |
753 // the current bytecode. | |
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754 int MethodData::compute_data_size(BytecodeStream* stream) { |
0 | 755 int cell_count = bytecode_cell_count(stream->code()); |
756 if (cell_count == no_profile_data) { | |
757 return 0; | |
758 } | |
759 if (cell_count == variable_cell_count) { | |
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760 switch (stream->code()) { |
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761 case Bytecodes::_lookupswitch: |
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|
762 case Bytecodes::_tableswitch: |
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763 cell_count = MultiBranchData::compute_cell_count(stream); |
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|
764 break; |
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|
765 case Bytecodes::_invokespecial: |
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|
766 case Bytecodes::_invokestatic: |
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|
767 case Bytecodes::_invokedynamic: |
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768 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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769 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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770 profile_return_for_invoke(stream->method(), stream->bci())) { |
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771 cell_count = CallTypeData::compute_cell_count(stream); |
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|
772 } else { |
d13d7aba8c12
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|
773 cell_count = CounterData::static_cell_count(); |
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|
774 } |
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|
775 break; |
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|
776 case Bytecodes::_invokevirtual: |
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777 case Bytecodes::_invokeinterface: { |
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778 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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779 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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780 profile_return_for_invoke(stream->method(), stream->bci())) { |
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781 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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|
782 } else { |
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|
783 cell_count = VirtualCallData::static_cell_count(); |
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|
784 } |
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|
785 break; |
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|
786 } |
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|
787 default: |
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|
788 fatal("unexpected bytecode for var length profile data"); |
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|
789 } |
0 | 790 } |
791 // Note: cell_count might be zero, meaning that there is just | |
792 // a DataLayout header, with no extra cells. | |
793 assert(cell_count >= 0, "sanity"); | |
794 return DataLayout::compute_size_in_bytes(cell_count); | |
795 } | |
796 | |
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797 bool MethodData::is_speculative_trap_bytecode(Bytecodes::Code code) { |
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798 // Bytecodes for which we may use speculation |
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799 switch (code) { |
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800 case Bytecodes::_checkcast: |
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801 case Bytecodes::_instanceof: |
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802 case Bytecodes::_aastore: |
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803 case Bytecodes::_invokevirtual: |
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804 case Bytecodes::_invokeinterface: |
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805 case Bytecodes::_if_acmpeq: |
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806 case Bytecodes::_if_acmpne: |
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807 case Bytecodes::_invokestatic: |
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808 #ifdef COMPILER2 |
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809 return UseTypeSpeculation; |
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|
810 #endif |
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811 default: |
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|
812 return false; |
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|
813 } |
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|
814 return false; |
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|
815 } |
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|
816 |
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817 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count, bool needs_speculative_traps) { |
0 | 818 if (ProfileTraps) { |
819 // Assume that up to 3% of BCIs with no MDP will need to allocate one. | |
820 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; | |
821 // If the method is large, let the extra BCIs grow numerous (to ~1%). | |
822 int one_percent_of_data | |
823 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); | |
824 if (extra_data_count < one_percent_of_data) | |
825 extra_data_count = one_percent_of_data; | |
826 if (extra_data_count > empty_bc_count) | |
827 extra_data_count = empty_bc_count; // no need for more | |
17728
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828 |
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829 // Make sure we have a minimum number of extra data slots to |
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830 // allocate SpeculativeTrapData entries. We would want to have one |
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831 // entry per compilation that inlines this method and for which |
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832 // some type speculation assumption fails. So the room we need for |
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833 // the SpeculativeTrapData entries doesn't directly depend on the |
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834 // size of the method. Because it's hard to estimate, we reserve |
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835 // space for an arbitrary number of entries. |
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836 int spec_data_count = (needs_speculative_traps ? SpecTrapLimitExtraEntries : 0) * |
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837 (SpeculativeTrapData::static_cell_count() + DataLayout::header_size_in_cells()); |
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838 |
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839 return MAX2(extra_data_count, spec_data_count); |
0 | 840 } else { |
841 return 0; | |
842 } | |
843 } | |
844 | |
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845 // Compute the size of the MethodData* necessary to store |
0 | 846 // profiling information about a given method. Size is in bytes. |
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847 int MethodData::compute_allocation_size_in_bytes(methodHandle method) { |
0 | 848 int data_size = 0; |
849 BytecodeStream stream(method); | |
850 Bytecodes::Code c; | |
851 int empty_bc_count = 0; // number of bytecodes lacking data | |
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852 bool needs_speculative_traps = false; |
0 | 853 while ((c = stream.next()) >= 0) { |
854 int size_in_bytes = compute_data_size(&stream); | |
855 data_size += size_in_bytes; | |
856 if (size_in_bytes == 0) empty_bc_count += 1; | |
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857 needs_speculative_traps = needs_speculative_traps || is_speculative_trap_bytecode(c); |
0 | 858 } |
859 int object_size = in_bytes(data_offset()) + data_size; | |
860 | |
861 // Add some extra DataLayout cells (at least one) to track stray traps. | |
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862 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count, needs_speculative_traps); |
0 | 863 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); |
864 | |
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865 // Add a cell to record information about modified arguments. |
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866 int arg_size = method->size_of_parameters(); |
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867 object_size += DataLayout::compute_size_in_bytes(arg_size+1); |
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868 |
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869 // Reserve room for an area of the MDO dedicated to profiling of |
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870 // parameters |
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871 int args_cell = ParametersTypeData::compute_cell_count(method()); |
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872 if (args_cell > 0) { |
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873 object_size += DataLayout::compute_size_in_bytes(args_cell); |
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874 } |
0 | 875 return object_size; |
876 } | |
877 | |
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878 // Compute the size of the MethodData* necessary to store |
0 | 879 // profiling information about a given method. Size is in words |
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880 int MethodData::compute_allocation_size_in_words(methodHandle method) { |
0 | 881 int byte_size = compute_allocation_size_in_bytes(method); |
882 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; | |
883 return align_object_size(word_size); | |
884 } | |
885 | |
886 // Initialize an individual data segment. Returns the size of | |
887 // the segment in bytes. | |
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888 int MethodData::initialize_data(BytecodeStream* stream, |
0 | 889 int data_index) { |
8860 | 890 #if defined(COMPILER1) && !defined(COMPILER2) |
891 return 0; | |
892 #else | |
0 | 893 int cell_count = -1; |
894 int tag = DataLayout::no_tag; | |
895 DataLayout* data_layout = data_layout_at(data_index); | |
896 Bytecodes::Code c = stream->code(); | |
897 switch (c) { | |
898 case Bytecodes::_checkcast: | |
899 case Bytecodes::_instanceof: | |
900 case Bytecodes::_aastore: | |
901 if (TypeProfileCasts) { | |
902 cell_count = ReceiverTypeData::static_cell_count(); | |
903 tag = DataLayout::receiver_type_data_tag; | |
904 } else { | |
905 cell_count = BitData::static_cell_count(); | |
906 tag = DataLayout::bit_data_tag; | |
907 } | |
908 break; | |
909 case Bytecodes::_invokespecial: | |
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910 case Bytecodes::_invokestatic: { |
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911 int counter_data_cell_count = CounterData::static_cell_count(); |
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912 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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913 profile_return_for_invoke(stream->method(), stream->bci())) { |
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914 cell_count = CallTypeData::compute_cell_count(stream); |
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915 } else { |
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916 cell_count = counter_data_cell_count; |
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917 } |
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918 if (cell_count > counter_data_cell_count) { |
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919 tag = DataLayout::call_type_data_tag; |
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920 } else { |
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921 tag = DataLayout::counter_data_tag; |
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922 } |
0 | 923 break; |
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924 } |
0 | 925 case Bytecodes::_goto: |
926 case Bytecodes::_goto_w: | |
927 case Bytecodes::_jsr: | |
928 case Bytecodes::_jsr_w: | |
929 cell_count = JumpData::static_cell_count(); | |
930 tag = DataLayout::jump_data_tag; | |
931 break; | |
932 case Bytecodes::_invokevirtual: | |
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933 case Bytecodes::_invokeinterface: { |
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934 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); |
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935 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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936 profile_return_for_invoke(stream->method(), stream->bci())) { |
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937 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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938 } else { |
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939 cell_count = virtual_call_data_cell_count; |
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940 } |
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941 if (cell_count > virtual_call_data_cell_count) { |
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942 tag = DataLayout::virtual_call_type_data_tag; |
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943 } else { |
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944 tag = DataLayout::virtual_call_data_tag; |
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945 } |
0 | 946 break; |
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947 } |
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948 case Bytecodes::_invokedynamic: { |
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949 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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950 int counter_data_cell_count = CounterData::static_cell_count(); |
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951 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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952 profile_return_for_invoke(stream->method(), stream->bci())) { |
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953 cell_count = CallTypeData::compute_cell_count(stream); |
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954 } else { |
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955 cell_count = counter_data_cell_count; |
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956 } |
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957 if (cell_count > counter_data_cell_count) { |
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958 tag = DataLayout::call_type_data_tag; |
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959 } else { |
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960 tag = DataLayout::counter_data_tag; |
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961 } |
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962 break; |
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963 } |
0 | 964 case Bytecodes::_ret: |
965 cell_count = RetData::static_cell_count(); | |
966 tag = DataLayout::ret_data_tag; | |
967 break; | |
968 case Bytecodes::_ifeq: | |
969 case Bytecodes::_ifne: | |
970 case Bytecodes::_iflt: | |
971 case Bytecodes::_ifge: | |
972 case Bytecodes::_ifgt: | |
973 case Bytecodes::_ifle: | |
974 case Bytecodes::_if_icmpeq: | |
975 case Bytecodes::_if_icmpne: | |
976 case Bytecodes::_if_icmplt: | |
977 case Bytecodes::_if_icmpge: | |
978 case Bytecodes::_if_icmpgt: | |
979 case Bytecodes::_if_icmple: | |
980 case Bytecodes::_if_acmpeq: | |
981 case Bytecodes::_if_acmpne: | |
982 case Bytecodes::_ifnull: | |
983 case Bytecodes::_ifnonnull: | |
984 cell_count = BranchData::static_cell_count(); | |
985 tag = DataLayout::branch_data_tag; | |
986 break; | |
987 case Bytecodes::_lookupswitch: | |
988 case Bytecodes::_tableswitch: | |
989 cell_count = MultiBranchData::compute_cell_count(stream); | |
990 tag = DataLayout::multi_branch_data_tag; | |
991 break; | |
992 } | |
993 assert(tag == DataLayout::multi_branch_data_tag || | |
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994 ((MethodData::profile_arguments() || MethodData::profile_return()) && |
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995 (tag == DataLayout::call_type_data_tag || |
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996 tag == DataLayout::counter_data_tag || |
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997 tag == DataLayout::virtual_call_type_data_tag || |
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998 tag == DataLayout::virtual_call_data_tag)) || |
0 | 999 cell_count == bytecode_cell_count(c), "cell counts must agree"); |
1000 if (cell_count >= 0) { | |
1001 assert(tag != DataLayout::no_tag, "bad tag"); | |
1002 assert(bytecode_has_profile(c), "agree w/ BHP"); | |
1003 data_layout->initialize(tag, stream->bci(), cell_count); | |
1004 return DataLayout::compute_size_in_bytes(cell_count); | |
1005 } else { | |
1006 assert(!bytecode_has_profile(c), "agree w/ !BHP"); | |
1007 return 0; | |
1008 } | |
8860 | 1009 #endif |
0 | 1010 } |
1011 | |
1012 // Get the data at an arbitrary (sort of) data index. | |
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1013 ProfileData* MethodData::data_at(int data_index) const { |
0 | 1014 if (out_of_bounds(data_index)) { |
1015 return NULL; | |
1016 } | |
1017 DataLayout* data_layout = data_layout_at(data_index); | |
941 | 1018 return data_layout->data_in(); |
1019 } | |
0 | 1020 |
941 | 1021 ProfileData* DataLayout::data_in() { |
1022 switch (tag()) { | |
0 | 1023 case DataLayout::no_tag: |
1024 default: | |
1025 ShouldNotReachHere(); | |
1026 return NULL; | |
1027 case DataLayout::bit_data_tag: | |
941 | 1028 return new BitData(this); |
0 | 1029 case DataLayout::counter_data_tag: |
941 | 1030 return new CounterData(this); |
0 | 1031 case DataLayout::jump_data_tag: |
941 | 1032 return new JumpData(this); |
0 | 1033 case DataLayout::receiver_type_data_tag: |
941 | 1034 return new ReceiverTypeData(this); |
0 | 1035 case DataLayout::virtual_call_data_tag: |
941 | 1036 return new VirtualCallData(this); |
0 | 1037 case DataLayout::ret_data_tag: |
941 | 1038 return new RetData(this); |
0 | 1039 case DataLayout::branch_data_tag: |
941 | 1040 return new BranchData(this); |
0 | 1041 case DataLayout::multi_branch_data_tag: |
941 | 1042 return new MultiBranchData(this); |
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1043 case DataLayout::arg_info_data_tag: |
941 | 1044 return new ArgInfoData(this); |
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1045 case DataLayout::call_type_data_tag: |
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1046 return new CallTypeData(this); |
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1047 case DataLayout::virtual_call_type_data_tag: |
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1048 return new VirtualCallTypeData(this); |
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1049 case DataLayout::parameters_type_data_tag: |
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1050 return new ParametersTypeData(this); |
0 | 1051 }; |
1052 } | |
1053 | |
1054 // Iteration over data. | |
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1055 ProfileData* MethodData::next_data(ProfileData* current) const { |
0 | 1056 int current_index = dp_to_di(current->dp()); |
1057 int next_index = current_index + current->size_in_bytes(); | |
1058 ProfileData* next = data_at(next_index); | |
1059 return next; | |
1060 } | |
1061 | |
1062 // Give each of the data entries a chance to perform specific | |
1063 // data initialization. | |
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1064 void MethodData::post_initialize(BytecodeStream* stream) { |
0 | 1065 ResourceMark rm; |
1066 ProfileData* data; | |
1067 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
1068 stream->set_start(data->bci()); | |
1069 stream->next(); | |
1070 data->post_initialize(stream, this); | |
1071 } | |
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1072 if (_parameters_type_data_di != -1) { |
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1073 parameters_type_data()->post_initialize(NULL, this); |
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1074 } |
0 | 1075 } |
1076 | |
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1077 // Initialize the MethodData* corresponding to a given method. |
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1078 MethodData::MethodData(methodHandle method, int size, TRAPS) |
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1079 : _extra_data_lock(Monitor::leaf, "MDO extra data lock") { |
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1080 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC |
0 | 1081 ResourceMark rm; |
1082 // Set the method back-pointer. | |
1083 _method = method(); | |
1783 | 1084 |
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1085 init(); |
0 | 1086 set_creation_mileage(mileage_of(method())); |
1087 | |
1088 // Go through the bytecodes and allocate and initialize the | |
1089 // corresponding data cells. | |
1090 int data_size = 0; | |
1091 int empty_bc_count = 0; // number of bytecodes lacking data | |
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1092 _data[0] = 0; // apparently not set below. |
0 | 1093 BytecodeStream stream(method); |
1094 Bytecodes::Code c; | |
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1095 bool needs_speculative_traps = false; |
0 | 1096 while ((c = stream.next()) >= 0) { |
1097 int size_in_bytes = initialize_data(&stream, data_size); | |
1098 data_size += size_in_bytes; | |
1099 if (size_in_bytes == 0) empty_bc_count += 1; | |
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1100 needs_speculative_traps = needs_speculative_traps || is_speculative_trap_bytecode(c); |
0 | 1101 } |
1102 _data_size = data_size; | |
1103 int object_size = in_bytes(data_offset()) + data_size; | |
1104 | |
1105 // Add some extra DataLayout cells (at least one) to track stray traps. | |
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1106 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count, needs_speculative_traps); |
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1107 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); |
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1108 |
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1109 // Let's zero the space for the extra data |
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1110 Copy::zero_to_bytes(((address)_data) + data_size, extra_size); |
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1111 |
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1112 // Add a cell to record information about modified arguments. |
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1113 // Set up _args_modified array after traps cells so that |
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1114 // the code for traps cells works. |
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1115 DataLayout *dp = data_layout_at(data_size + extra_size); |
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1116 |
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1117 int arg_size = method->size_of_parameters(); |
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1118 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); |
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1119 |
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1120 int arg_data_size = DataLayout::compute_size_in_bytes(arg_size+1); |
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1121 object_size += extra_size + arg_data_size; |
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1122 |
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1123 int parms_cell = ParametersTypeData::compute_cell_count(method()); |
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1124 // If we are profiling parameters, we reserver an area near the end |
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1125 // of the MDO after the slots for bytecodes (because there's no bci |
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1126 // for method entry so they don't fit with the framework for the |
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1127 // profiling of bytecodes). We store the offset within the MDO of |
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1128 // this area (or -1 if no parameter is profiled) |
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1129 if (parms_cell > 0) { |
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1130 object_size += DataLayout::compute_size_in_bytes(parms_cell); |
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1131 _parameters_type_data_di = data_size + extra_size + arg_data_size; |
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1132 DataLayout *dp = data_layout_at(data_size + extra_size + arg_data_size); |
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1133 dp->initialize(DataLayout::parameters_type_data_tag, 0, parms_cell); |
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1134 } else { |
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1135 _parameters_type_data_di = -1; |
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1136 } |
0 | 1137 |
1138 // Set an initial hint. Don't use set_hint_di() because | |
1139 // first_di() may be out of bounds if data_size is 0. | |
1140 // In that situation, _hint_di is never used, but at | |
1141 // least well-defined. | |
1142 _hint_di = first_di(); | |
1143 | |
1144 post_initialize(&stream); | |
1145 | |
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1146 set_size(object_size); |
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1147 } |
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1148 |
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1149 void MethodData::init() { |
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1150 _invocation_counter.init(); |
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1151 _backedge_counter.init(); |
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1152 _invocation_counter_start = 0; |
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1153 _backedge_counter_start = 0; |
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1154 _num_loops = 0; |
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1155 _num_blocks = 0; |
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1156 _highest_comp_level = 0; |
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1157 _highest_osr_comp_level = 0; |
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1158 _would_profile = true; |
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1159 |
17780 | 1160 #if INCLUDE_RTM_OPT |
1161 _rtm_state = NoRTM; // No RTM lock eliding by default | |
1162 if (UseRTMLocking && | |
1163 !CompilerOracle::has_option_string(_method, "NoRTMLockEliding")) { | |
1164 if (CompilerOracle::has_option_string(_method, "UseRTMLockEliding") || !UseRTMDeopt) { | |
1165 // Generate RTM lock eliding code without abort ratio calculation code. | |
1166 _rtm_state = UseRTM; | |
1167 } else if (UseRTMDeopt) { | |
1168 // Generate RTM lock eliding code and include abort ratio calculation | |
1169 // code if UseRTMDeopt is on. | |
1170 _rtm_state = ProfileRTM; | |
1171 } | |
1172 } | |
1173 #endif | |
1174 | |
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1175 // Initialize flags and trap history. |
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1176 _nof_decompiles = 0; |
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1177 _nof_overflow_recompiles = 0; |
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1178 _nof_overflow_traps = 0; |
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1179 clear_escape_info(); |
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1180 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); |
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1181 Copy::zero_to_words((HeapWord*) &_trap_hist, |
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1182 sizeof(_trap_hist) / sizeof(HeapWord)); |
0 | 1183 } |
1184 | |
1185 // Get a measure of how much mileage the method has on it. | |
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1186 int MethodData::mileage_of(Method* method) { |
0 | 1187 int mileage = 0; |
1783 | 1188 if (TieredCompilation) { |
1189 mileage = MAX2(method->invocation_count(), method->backedge_count()); | |
1190 } else { | |
1191 int iic = method->interpreter_invocation_count(); | |
1192 if (mileage < iic) mileage = iic; | |
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1193 MethodCounters* mcs = method->method_counters(); |
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1194 if (mcs != NULL) { |
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1195 InvocationCounter* ic = mcs->invocation_counter(); |
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1196 InvocationCounter* bc = mcs->backedge_counter(); |
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1197 int icval = ic->count(); |
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1198 if (ic->carry()) icval += CompileThreshold; |
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1199 if (mileage < icval) mileage = icval; |
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1200 int bcval = bc->count(); |
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1201 if (bc->carry()) bcval += CompileThreshold; |
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1202 if (mileage < bcval) mileage = bcval; |
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1203 } |
1783 | 1204 } |
0 | 1205 return mileage; |
1206 } | |
1207 | |
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1208 bool MethodData::is_mature() const { |
1783 | 1209 return CompilationPolicy::policy()->is_mature(_method); |
0 | 1210 } |
1211 | |
1212 // Translate a bci to its corresponding data index (di). | |
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1213 address MethodData::bci_to_dp(int bci) { |
0 | 1214 ResourceMark rm; |
1215 ProfileData* data = data_before(bci); | |
1216 ProfileData* prev = NULL; | |
1217 for ( ; is_valid(data); data = next_data(data)) { | |
1218 if (data->bci() >= bci) { | |
1219 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); | |
1220 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); | |
1221 return data->dp(); | |
1222 } | |
1223 prev = data; | |
1224 } | |
1225 return (address)limit_data_position(); | |
1226 } | |
1227 | |
1228 // Translate a bci to its corresponding data, or NULL. | |
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1229 ProfileData* MethodData::bci_to_data(int bci) { |
0 | 1230 ProfileData* data = data_before(bci); |
1231 for ( ; is_valid(data); data = next_data(data)) { | |
1232 if (data->bci() == bci) { | |
1233 set_hint_di(dp_to_di(data->dp())); | |
1234 return data; | |
1235 } else if (data->bci() > bci) { | |
1236 break; | |
1237 } | |
1238 } | |
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1239 return bci_to_extra_data(bci, NULL, false); |
0 | 1240 } |
1241 | |
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1242 DataLayout* MethodData::next_extra(DataLayout* dp) { |
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1243 int nb_cells = 0; |
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1244 switch(dp->tag()) { |
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1245 case DataLayout::bit_data_tag: |
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1246 case DataLayout::no_tag: |
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1247 nb_cells = BitData::static_cell_count(); |
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1248 break; |
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1249 case DataLayout::speculative_trap_data_tag: |
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1250 nb_cells = SpeculativeTrapData::static_cell_count(); |
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1251 break; |
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1252 default: |
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1253 fatal(err_msg("unexpected tag %d", dp->tag())); |
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1254 } |
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1255 return (DataLayout*)((address)dp + DataLayout::compute_size_in_bytes(nb_cells)); |
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1256 } |
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1257 |
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1258 ProfileData* MethodData::bci_to_extra_data_helper(int bci, Method* m, DataLayout*& dp, bool concurrent) { |
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1259 DataLayout* end = extra_data_limit(); |
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1260 |
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1261 for (;; dp = next_extra(dp)) { |
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1262 assert(dp < end, "moved past end of extra data"); |
0 | 1263 // No need for "OrderAccess::load_acquire" ops, |
1264 // since the data structure is monotonic. | |
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1265 switch(dp->tag()) { |
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1266 case DataLayout::no_tag: |
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1267 return NULL; |
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1268 case DataLayout::arg_info_data_tag: |
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1269 dp = end; |
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1270 return NULL; // ArgInfoData is at the end of extra data section. |
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1271 case DataLayout::bit_data_tag: |
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1272 if (m == NULL && dp->bci() == bci) { |
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1273 return new BitData(dp); |
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1274 } |
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1275 break; |
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1276 case DataLayout::speculative_trap_data_tag: |
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1277 if (m != NULL) { |
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1278 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1279 // data->method() may be null in case of a concurrent |
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1280 // allocation. Maybe it's for the same method. Try to use that |
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1281 // entry in that case. |
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1282 if (dp->bci() == bci) { |
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1283 if (data->method() == NULL) { |
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1284 assert(concurrent, "impossible because no concurrent allocation"); |
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1285 return NULL; |
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1286 } else if (data->method() == m) { |
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1287 return data; |
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1288 } |
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1289 } |
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1290 } |
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1291 break; |
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1292 default: |
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1293 fatal(err_msg("unexpected tag %d", dp->tag())); |
0 | 1294 } |
1295 } | |
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1296 return NULL; |
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1297 } |
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1298 |
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1299 |
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1300 // Translate a bci to its corresponding extra data, or NULL. |
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1301 ProfileData* MethodData::bci_to_extra_data(int bci, Method* m, bool create_if_missing) { |
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1302 // This code assumes an entry for a SpeculativeTrapData is 2 cells |
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1303 assert(2*DataLayout::compute_size_in_bytes(BitData::static_cell_count()) == |
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1304 DataLayout::compute_size_in_bytes(SpeculativeTrapData::static_cell_count()), |
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1305 "code needs to be adjusted"); |
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1306 |
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1307 DataLayout* dp = extra_data_base(); |
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1308 DataLayout* end = extra_data_limit(); |
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1309 |
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1310 // Allocation in the extra data space has to be atomic because not |
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1311 // all entries have the same size and non atomic concurrent |
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1312 // allocation would result in a corrupted extra data space. |
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1313 ProfileData* result = bci_to_extra_data_helper(bci, m, dp, true); |
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1314 if (result != NULL) { |
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1315 return result; |
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1316 } |
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1317 |
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1318 if (create_if_missing && dp < end) { |
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1319 MutexLocker ml(&_extra_data_lock); |
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1320 // Check again now that we have the lock. Another thread may |
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1321 // have added extra data entries. |
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1322 ProfileData* result = bci_to_extra_data_helper(bci, m, dp, false); |
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1323 if (result != NULL || dp >= end) { |
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1324 return result; |
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1325 } |
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1326 |
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1327 assert(dp->tag() == DataLayout::no_tag || (dp->tag() == DataLayout::speculative_trap_data_tag && m != NULL), "should be free"); |
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1328 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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1329 u1 tag = m == NULL ? DataLayout::bit_data_tag : DataLayout::speculative_trap_data_tag; |
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1330 // SpeculativeTrapData is 2 slots. Make sure we have room. |
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1331 if (m != NULL && next_extra(dp)->tag() != DataLayout::no_tag) { |
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1332 return NULL; |
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1333 } |
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1334 DataLayout temp; |
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1335 temp.initialize(tag, bci, 0); |
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1336 |
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1337 dp->set_header(temp.header()); |
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1338 assert(dp->tag() == tag, "sane"); |
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1339 assert(dp->bci() == bci, "no concurrent allocation"); |
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1340 if (tag == DataLayout::bit_data_tag) { |
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1341 return new BitData(dp); |
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1342 } else { |
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1343 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1344 data->set_method(m); |
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1345 return data; |
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1346 } |
0 | 1347 } |
1348 return NULL; | |
1349 } | |
1350 | |
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1351 ArgInfoData *MethodData::arg_info() { |
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1352 DataLayout* dp = extra_data_base(); |
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1353 DataLayout* end = extra_data_limit(); |
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1354 for (; dp < end; dp = next_extra(dp)) { |
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1355 if (dp->tag() == DataLayout::arg_info_data_tag) |
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1356 return new ArgInfoData(dp); |
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1357 } |
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1358 return NULL; |
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1359 } |
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1360 |
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1361 // Printing |
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1362 |
0 | 1363 #ifndef PRODUCT |
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1364 |
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1365 void MethodData::print_on(outputStream* st) const { |
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1366 assert(is_methodData(), "should be method data"); |
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1367 st->print("method data for "); |
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1368 method()->print_value_on(st); |
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1369 st->cr(); |
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1370 print_data_on(st); |
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1371 } |
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1372 |
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1373 #endif //PRODUCT |
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1374 |
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1375 void MethodData::print_value_on(outputStream* st) const { |
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1376 assert(is_methodData(), "should be method data"); |
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1377 st->print("method data for "); |
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1378 method()->print_value_on(st); |
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1379 } |
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1380 |
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1381 #ifndef PRODUCT |
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1382 void MethodData::print_data_on(outputStream* st) const { |
0 | 1383 ResourceMark rm; |
1384 ProfileData* data = first_data(); | |
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1385 if (_parameters_type_data_di != -1) { |
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1386 parameters_type_data()->print_data_on(st); |
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1387 } |
0 | 1388 for ( ; is_valid(data); data = next_data(data)) { |
1389 st->print("%d", dp_to_di(data->dp())); | |
1390 st->fill_to(6); | |
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1391 data->print_data_on(st, this); |
0 | 1392 } |
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1393 st->print_cr("--- Extra data:"); |
0 | 1394 DataLayout* dp = extra_data_base(); |
1395 DataLayout* end = extra_data_limit(); | |
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1396 for (;; dp = next_extra(dp)) { |
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1397 assert(dp < end, "moved past end of extra data"); |
0 | 1398 // No need for "OrderAccess::load_acquire" ops, |
1399 // since the data structure is monotonic. | |
17728
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1400 switch(dp->tag()) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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|
1401 case DataLayout::no_tag: |
b8413a9cbb84
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|
1402 continue; |
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|
1403 case DataLayout::bit_data_tag: |
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
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diff
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|
1404 data = new BitData(dp); |
17728
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|
1405 break; |
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|
1406 case DataLayout::speculative_trap_data_tag: |
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roland
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|
1407 data = new SpeculativeTrapData(dp); |
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|
1408 break; |
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|
1409 case DataLayout::arg_info_data_tag: |
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
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diff
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|
1410 data = new ArgInfoData(dp); |
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diff
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|
1411 dp = end; // ArgInfoData is at the end of extra data section. |
17728
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|
1412 break; |
b8413a9cbb84
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|
1413 default: |
b8413a9cbb84
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|
1414 fatal(err_msg("unexpected tag %d", dp->tag())); |
45
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0
diff
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|
1415 } |
0 | 1416 st->print("%d", dp_to_di(data->dp())); |
1417 st->fill_to(6); | |
1418 data->print_data_on(st); | |
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|
1419 if (dp >= end) return; |
0 | 1420 } |
1421 } | |
1422 #endif | |
1423 | |
7956 | 1424 #if INCLUDE_SERVICES |
1425 // Size Statistics | |
1426 void MethodData::collect_statistics(KlassSizeStats *sz) const { | |
1427 int n = sz->count(this); | |
1428 sz->_method_data_bytes += n; | |
1429 sz->_method_all_bytes += n; | |
1430 sz->_rw_bytes += n; | |
1431 } | |
1432 #endif // INCLUDE_SERVICES | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
1433 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1434 // Verification |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1435 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
1436 void MethodData::verify_on(outputStream* st) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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2264
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|
1437 guarantee(is_methodData(), "object must be method data"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
1438 // guarantee(m->is_perm(), "should be in permspace"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1439 this->verify_data_on(st); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
1440 } |
da91efe96a93
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|
1441 |
da91efe96a93
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|
1442 void MethodData::verify_data_on(outputStream* st) { |
0 | 1443 NEEDS_CLEANUP; |
1444 // not yet implemented. | |
1445 } | |
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|
1446 |
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|
1447 bool MethodData::profile_jsr292(methodHandle m, int bci) { |
d13d7aba8c12
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|
1448 if (m->is_compiled_lambda_form()) { |
d13d7aba8c12
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changeset
|
1449 return true; |
d13d7aba8c12
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diff
changeset
|
1450 } |
d13d7aba8c12
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diff
changeset
|
1451 |
d13d7aba8c12
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changeset
|
1452 Bytecode_invoke inv(m , bci); |
d13d7aba8c12
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diff
changeset
|
1453 return inv.is_invokedynamic() || inv.is_invokehandle(); |
d13d7aba8c12
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diff
changeset
|
1454 } |
d13d7aba8c12
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diff
changeset
|
1455 |
d13d7aba8c12
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|
1456 int MethodData::profile_arguments_flag() { |
12882
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|
1457 return TypeProfileLevel % 10; |
12875
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|
1458 } |
d13d7aba8c12
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|
1459 |
d13d7aba8c12
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diff
changeset
|
1460 bool MethodData::profile_arguments() { |
d13d7aba8c12
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|
1461 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; |
d13d7aba8c12
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|
1462 } |
d13d7aba8c12
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changeset
|
1463 |
d13d7aba8c12
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|
1464 bool MethodData::profile_arguments_jsr292_only() { |
d13d7aba8c12
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|
1465 return profile_arguments_flag() == type_profile_jsr292; |
d13d7aba8c12
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diff
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|
1466 } |
d13d7aba8c12
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|
1467 |
d13d7aba8c12
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|
1468 bool MethodData::profile_all_arguments() { |
d13d7aba8c12
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|
1469 return profile_arguments_flag() == type_profile_all; |
d13d7aba8c12
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|
1470 } |
d13d7aba8c12
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diff
changeset
|
1471 |
d13d7aba8c12
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changeset
|
1472 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { |
d13d7aba8c12
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diff
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|
1473 if (!profile_arguments()) { |
d13d7aba8c12
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diff
changeset
|
1474 return false; |
d13d7aba8c12
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10376
diff
changeset
|
1475 } |
d13d7aba8c12
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diff
changeset
|
1476 |
d13d7aba8c12
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changeset
|
1477 if (profile_all_arguments()) { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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diff
changeset
|
1478 return true; |
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
1479 } |
d13d7aba8c12
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diff
changeset
|
1480 |
d13d7aba8c12
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diff
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|
1481 assert(profile_arguments_jsr292_only(), "inconsistent"); |
d13d7aba8c12
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diff
changeset
|
1482 return profile_jsr292(m, bci); |
d13d7aba8c12
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diff
changeset
|
1483 } |
d13d7aba8c12
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changeset
|
1484 |
12882
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changeset
|
1485 int MethodData::profile_return_flag() { |
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
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diff
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|
1486 return (TypeProfileLevel % 100) / 10; |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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|
1487 } |
ce0cc25bc5e2
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|
1488 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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changeset
|
1489 bool MethodData::profile_return() { |
ce0cc25bc5e2
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changeset
|
1490 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; |
ce0cc25bc5e2
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|
1491 } |
ce0cc25bc5e2
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roland
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12875
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|
1492 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1493 bool MethodData::profile_return_jsr292_only() { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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|
1494 return profile_return_flag() == type_profile_jsr292; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1495 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1496 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
diff
changeset
|
1497 bool MethodData::profile_all_return() { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1498 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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|
1499 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1500 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1501 bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1502 if (!profile_return()) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1503 return false; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1504 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1505 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1506 if (profile_all_return()) { |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1507 return true; |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1508 } |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1509 |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
1510 assert(profile_return_jsr292_only(), "inconsistent"); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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12875
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|
1511 return profile_jsr292(m, bci); |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
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|
1512 } |
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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12882
diff
changeset
|
1513 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1514 int MethodData::profile_parameters_flag() { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1515 return TypeProfileLevel / 100; |
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 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1518 bool MethodData::profile_parameters() { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1519 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
|
1520 } |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1521 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1522 bool MethodData::profile_parameters_jsr292_only() { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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diff
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|
1523 return profile_parameters_flag() == type_profile_jsr292; |
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 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1526 bool MethodData::profile_all_parameters() { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1527 return profile_parameters_flag() == type_profile_all; |
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 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1530 bool MethodData::profile_parameters_for_method(methodHandle m) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1531 if (!profile_parameters()) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1532 return false; |
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 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1535 if (profile_all_parameters()) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1536 return true; |
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
parents:
12882
diff
changeset
|
1538 |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1539 assert(profile_parameters_jsr292_only(), "inconsistent"); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1540 return m->is_compiled_lambda_form(); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
1541 } |
17728
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1542 |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
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diff
changeset
|
1543 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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diff
changeset
|
1544 if (shift == 0) { |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1545 return; |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1546 } |
b8413a9cbb84
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
13080
diff
changeset
|
1547 if (!reset) { |
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1548 // Move all cells of trap entry at dp left by "shift" cells |
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1549 intptr_t* start = (intptr_t*)dp; |
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1550 intptr_t* end = (intptr_t*)next_extra(dp); |
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1551 for (intptr_t* ptr = start; ptr < end; ptr++) { |
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1552 *(ptr-shift) = *ptr; |
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1553 } |
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1554 } else { |
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1555 // Reset "shift" cells stopping at dp |
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1556 intptr_t* start = ((intptr_t*)dp) - shift; |
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1557 intptr_t* end = (intptr_t*)dp; |
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1558 for (intptr_t* ptr = start; ptr < end; ptr++) { |
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1559 *ptr = 0; |
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1560 } |
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|
1561 } |
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|
1562 } |
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1563 |
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1564 // Remove SpeculativeTrapData entries that reference an unloaded |
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1565 // method |
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1566 void MethodData::clean_extra_data(BoolObjectClosure* is_alive) { |
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1567 DataLayout* dp = extra_data_base(); |
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1568 DataLayout* end = extra_data_limit(); |
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1569 |
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1570 int shift = 0; |
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1571 for (; dp < end; dp = next_extra(dp)) { |
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1572 switch(dp->tag()) { |
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1573 case DataLayout::speculative_trap_data_tag: { |
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1574 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1575 Method* m = data->method(); |
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1576 assert(m != NULL, "should have a method"); |
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1577 if (!m->method_holder()->is_loader_alive(is_alive)) { |
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1578 // "shift" accumulates the number of cells for dead |
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1579 // SpeculativeTrapData entries that have been seen so |
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1580 // far. Following entries must be shifted left by that many |
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1581 // cells to remove the dead SpeculativeTrapData entries. |
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1582 shift += (int)((intptr_t*)next_extra(dp) - (intptr_t*)dp); |
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1583 } else { |
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1584 // Shift this entry left if it follows dead |
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1585 // SpeculativeTrapData entries |
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1586 clean_extra_data_helper(dp, shift); |
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1587 } |
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1588 break; |
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1589 } |
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1590 case DataLayout::bit_data_tag: |
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1591 // Shift this entry left if it follows dead SpeculativeTrapData |
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1592 // entries |
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1593 clean_extra_data_helper(dp, shift); |
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1594 continue; |
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1595 case DataLayout::no_tag: |
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1596 case DataLayout::arg_info_data_tag: |
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1597 // We are at end of the live trap entries. The previous "shift" |
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1598 // cells contain entries that are either dead or were shifted |
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1599 // left. They need to be reset to no_tag |
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1600 clean_extra_data_helper(dp, shift, true); |
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1601 return; |
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1602 default: |
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1603 fatal(err_msg("unexpected tag %d", dp->tag())); |
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1604 } |
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1605 } |
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1606 } |
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1607 |
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1608 // Verify there's no unloaded method referenced by a |
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1609 // SpeculativeTrapData entry |
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1610 void MethodData::verify_extra_data_clean(BoolObjectClosure* is_alive) { |
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1611 #ifdef ASSERT |
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1612 DataLayout* dp = extra_data_base(); |
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1613 DataLayout* end = extra_data_limit(); |
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1614 |
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1615 for (; dp < end; dp = next_extra(dp)) { |
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1616 switch(dp->tag()) { |
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1617 case DataLayout::speculative_trap_data_tag: { |
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1618 SpeculativeTrapData* data = new SpeculativeTrapData(dp); |
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1619 Method* m = data->method(); |
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1620 assert(m != NULL && m->method_holder()->is_loader_alive(is_alive), "Method should exist"); |
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1621 break; |
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1622 } |
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1623 case DataLayout::bit_data_tag: |
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1624 continue; |
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1625 case DataLayout::no_tag: |
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1626 case DataLayout::arg_info_data_tag: |
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1627 return; |
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1628 default: |
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1629 fatal(err_msg("unexpected tag %d", dp->tag())); |
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1630 } |
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1631 } |
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1632 #endif |
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1633 } |
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1634 |
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1635 void MethodData::clean_method_data(BoolObjectClosure* is_alive) { |
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1636 for (ProfileData* data = first_data(); |
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1637 is_valid(data); |
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1638 data = next_data(data)) { |
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1639 data->clean_weak_klass_links(is_alive); |
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1640 } |
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1641 ParametersTypeData* parameters = parameters_type_data(); |
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1642 if (parameters != NULL) { |
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1643 parameters->clean_weak_klass_links(is_alive); |
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1644 } |
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1645 |
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1646 clean_extra_data(is_alive); |
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1647 verify_extra_data_clean(is_alive); |
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1648 } |