Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.cpp @ 12882:ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
Summary: x86 interpreter and c1 type profiling for return values at calls
Reviewed-by: kvn, twisti
author | roland |
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date | Sat, 12 Oct 2013 12:12:59 +0200 |
parents | d13d7aba8c12 |
children | 5ccbab1c69f3 |
rev | line source |
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0 | 1 /* |
7956 | 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
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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" | |
27 #include "interpreter/bytecode.hpp" | |
28 #include "interpreter/bytecodeStream.hpp" | |
29 #include "interpreter/linkResolver.hpp" | |
7956 | 30 #include "memory/heapInspection.hpp" |
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31 #include "oops/methodData.hpp" |
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32 #include "prims/jvmtiRedefineClasses.hpp" |
1972 | 33 #include "runtime/compilationPolicy.hpp" |
34 #include "runtime/deoptimization.hpp" | |
35 #include "runtime/handles.inline.hpp" | |
0 | 36 |
37 // ================================================================== | |
38 // DataLayout | |
39 // | |
40 // Overlay for generic profiling data. | |
41 | |
42 // Some types of data layouts need a length field. | |
43 bool DataLayout::needs_array_len(u1 tag) { | |
45
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44 return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag); |
0 | 45 } |
46 | |
47 // Perform generic initialization of the data. More specific | |
48 // initialization occurs in overrides of ProfileData::post_initialize. | |
49 void DataLayout::initialize(u1 tag, u2 bci, int cell_count) { | |
50 _header._bits = (intptr_t)0; | |
51 _header._struct._tag = tag; | |
52 _header._struct._bci = bci; | |
53 for (int i = 0; i < cell_count; i++) { | |
54 set_cell_at(i, (intptr_t)0); | |
55 } | |
56 if (needs_array_len(tag)) { | |
57 set_cell_at(ArrayData::array_len_off_set, cell_count - 1); // -1 for header. | |
58 } | |
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59 if (tag == call_type_data_tag) { |
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60 CallTypeData::initialize(this, cell_count); |
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61 } else if (tag == virtual_call_type_data_tag) { |
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62 VirtualCallTypeData::initialize(this, cell_count); |
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63 } |
0 | 64 } |
65 | |
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66 void DataLayout::clean_weak_klass_links(BoolObjectClosure* cl) { |
941 | 67 ResourceMark m; |
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68 data_in()->clean_weak_klass_links(cl); |
941 | 69 } |
70 | |
71 | |
0 | 72 // ================================================================== |
73 // ProfileData | |
74 // | |
75 // A ProfileData object is created to refer to a section of profiling | |
76 // data in a structured way. | |
77 | |
78 // Constructor for invalid ProfileData. | |
79 ProfileData::ProfileData() { | |
80 _data = NULL; | |
81 } | |
82 | |
83 #ifndef PRODUCT | |
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84 void ProfileData::print_shared(outputStream* st, const char* name) const { |
0 | 85 st->print("bci: %d", bci()); |
86 st->fill_to(tab_width_one); | |
87 st->print("%s", name); | |
88 tab(st); | |
89 int trap = trap_state(); | |
90 if (trap != 0) { | |
91 char buf[100]; | |
92 st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); | |
93 } | |
94 int flags = data()->flags(); | |
95 if (flags != 0) | |
96 st->print("flags(%d) ", flags); | |
97 } | |
98 | |
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99 void ProfileData::tab(outputStream* st, bool first) const { |
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100 st->fill_to(first ? tab_width_one : tab_width_two); |
0 | 101 } |
102 #endif // !PRODUCT | |
103 | |
104 // ================================================================== | |
105 // BitData | |
106 // | |
107 // A BitData corresponds to a one-bit flag. This is used to indicate | |
108 // whether a checkcast bytecode has seen a null value. | |
109 | |
110 | |
111 #ifndef PRODUCT | |
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112 void BitData::print_data_on(outputStream* st) const { |
0 | 113 print_shared(st, "BitData"); |
114 } | |
115 #endif // !PRODUCT | |
116 | |
117 // ================================================================== | |
118 // CounterData | |
119 // | |
120 // A CounterData corresponds to a simple counter. | |
121 | |
122 #ifndef PRODUCT | |
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123 void CounterData::print_data_on(outputStream* st) const { |
0 | 124 print_shared(st, "CounterData"); |
125 st->print_cr("count(%u)", count()); | |
126 } | |
127 #endif // !PRODUCT | |
128 | |
129 // ================================================================== | |
130 // JumpData | |
131 // | |
132 // A JumpData is used to access profiling information for a direct | |
133 // branch. It is a counter, used for counting the number of branches, | |
134 // plus a data displacement, used for realigning the data pointer to | |
135 // the corresponding target bci. | |
136 | |
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137 void JumpData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 138 assert(stream->bci() == bci(), "wrong pos"); |
139 int target; | |
140 Bytecodes::Code c = stream->code(); | |
141 if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) { | |
142 target = stream->dest_w(); | |
143 } else { | |
144 target = stream->dest(); | |
145 } | |
146 int my_di = mdo->dp_to_di(dp()); | |
147 int target_di = mdo->bci_to_di(target); | |
148 int offset = target_di - my_di; | |
149 set_displacement(offset); | |
150 } | |
151 | |
152 #ifndef PRODUCT | |
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153 void JumpData::print_data_on(outputStream* st) const { |
0 | 154 print_shared(st, "JumpData"); |
155 st->print_cr("taken(%u) displacement(%d)", taken(), displacement()); | |
156 } | |
157 #endif // !PRODUCT | |
158 | |
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159 int TypeStackSlotEntries::compute_cell_count(Symbol* signature, int max) { |
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160 ResourceMark rm; |
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161 SignatureStream ss(signature); |
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162 int args_count = MIN2(ss.reference_parameter_count(), max); |
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163 return args_count * per_arg_cell_count; |
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164 } |
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165 |
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166 int TypeEntriesAtCall::compute_cell_count(BytecodeStream* stream) { |
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167 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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168 assert(TypeStackSlotEntries::per_arg_count() > ReturnTypeEntry::static_cell_count(), "code to test for arguments/results broken"); |
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169 Bytecode_invoke inv(stream->method(), stream->bci()); |
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170 int args_cell = 0; |
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171 if (arguments_profiling_enabled()) { |
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172 args_cell = TypeStackSlotEntries::compute_cell_count(inv.signature(), TypeProfileArgsLimit); |
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173 } |
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174 int ret_cell = 0; |
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175 if (return_profiling_enabled() && (inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY)) { |
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176 ret_cell = ReturnTypeEntry::static_cell_count(); |
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177 } |
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178 int header_cell = 0; |
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179 if (args_cell + ret_cell > 0) { |
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180 header_cell = header_cell_count(); |
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181 } |
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182 |
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183 return header_cell + args_cell + ret_cell; |
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184 } |
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185 |
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186 class ArgumentOffsetComputer : public SignatureInfo { |
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187 private: |
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188 int _max; |
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189 GrowableArray<int> _offsets; |
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190 |
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191 void set(int size, BasicType type) { _size += size; } |
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192 void do_object(int begin, int end) { |
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193 if (_offsets.length() < _max) { |
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194 _offsets.push(_size); |
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195 } |
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196 SignatureInfo::do_object(begin, end); |
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197 } |
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198 void do_array (int begin, int end) { |
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199 if (_offsets.length() < _max) { |
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200 _offsets.push(_size); |
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201 } |
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202 SignatureInfo::do_array(begin, end); |
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203 } |
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204 |
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205 public: |
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206 ArgumentOffsetComputer(Symbol* signature, int max) |
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207 : SignatureInfo(signature), _max(max), _offsets(Thread::current(), max) { |
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208 } |
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209 |
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210 int total() { lazy_iterate_parameters(); return _size; } |
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211 |
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212 int off_at(int i) const { return _offsets.at(i); } |
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213 }; |
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214 |
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215 void TypeStackSlotEntries::post_initialize(Symbol* signature, bool has_receiver) { |
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216 ResourceMark rm; |
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217 ArgumentOffsetComputer aos(signature, _number_of_entries); |
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218 aos.total(); |
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219 for (int i = 0; i < _number_of_entries; i++) { |
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220 set_stack_slot(i, aos.off_at(i) + (has_receiver ? 1 : 0)); |
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221 set_type(i, type_none()); |
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222 } |
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223 } |
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224 |
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225 void CallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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226 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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227 Bytecode_invoke inv(stream->method(), stream->bci()); |
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228 |
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229 SignatureStream ss(inv.signature()); |
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230 if (has_arguments()) { |
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231 #ifdef ASSERT |
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232 ResourceMark rm; |
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233 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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234 assert(count > 0, "room for args type but none found?"); |
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235 check_number_of_arguments(count); |
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236 #endif |
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237 _args.post_initialize(inv.signature(), inv.has_receiver()); |
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238 } |
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239 |
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240 if (has_return()) { |
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241 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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242 _ret.post_initialize(); |
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243 } |
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244 } |
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245 |
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246 void VirtualCallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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247 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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248 Bytecode_invoke inv(stream->method(), stream->bci()); |
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249 |
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250 if (has_arguments()) { |
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251 #ifdef ASSERT |
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252 ResourceMark rm; |
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253 SignatureStream ss(inv.signature()); |
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254 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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255 assert(count > 0, "room for args type but none found?"); |
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256 check_number_of_arguments(count); |
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257 #endif |
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258 _args.post_initialize(inv.signature(), inv.has_receiver()); |
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259 } |
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260 |
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261 if (has_return()) { |
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262 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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263 _ret.post_initialize(); |
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264 } |
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265 } |
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266 |
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267 bool TypeEntries::is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p) { |
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268 return !is_type_none(p) && |
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269 !((Klass*)klass_part(p))->is_loader_alive(is_alive_cl); |
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270 } |
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271 |
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272 void TypeStackSlotEntries::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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273 for (int i = 0; i < _number_of_entries; i++) { |
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274 intptr_t p = type(i); |
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275 if (is_loader_alive(is_alive_cl, p)) { |
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276 set_type(i, type_none()); |
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277 } |
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278 } |
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279 } |
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280 |
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281 void ReturnTypeEntry::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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282 intptr_t p = type(); |
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283 if (is_loader_alive(is_alive_cl, p)) { |
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284 set_type(type_none()); |
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285 } |
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286 } |
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287 |
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288 bool TypeEntriesAtCall::return_profiling_enabled() { |
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289 return MethodData::profile_return(); |
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290 } |
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291 |
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292 bool TypeEntriesAtCall::arguments_profiling_enabled() { |
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293 return MethodData::profile_arguments(); |
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294 } |
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295 |
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296 #ifndef PRODUCT |
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297 void TypeEntries::print_klass(outputStream* st, intptr_t k) { |
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298 if (is_type_none(k)) { |
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299 st->print("none"); |
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300 } else if (is_type_unknown(k)) { |
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301 st->print("unknown"); |
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302 } else { |
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303 valid_klass(k)->print_value_on(st); |
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304 } |
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305 if (was_null_seen(k)) { |
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306 st->print(" (null seen)"); |
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307 } |
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308 } |
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309 |
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310 void TypeStackSlotEntries::print_data_on(outputStream* st) const { |
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311 for (int i = 0; i < _number_of_entries; i++) { |
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312 _pd->tab(st); |
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313 st->print("%d: stack(%u) ", i, stack_slot(i)); |
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314 print_klass(st, type(i)); |
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315 st->cr(); |
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316 } |
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317 } |
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318 |
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319 void ReturnTypeEntry::print_data_on(outputStream* st) const { |
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320 _pd->tab(st); |
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321 print_klass(st, type()); |
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322 st->cr(); |
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323 } |
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324 |
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325 void CallTypeData::print_data_on(outputStream* st) const { |
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326 CounterData::print_data_on(st); |
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327 if (has_arguments()) { |
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328 tab(st, true); |
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329 st->print("argument types"); |
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330 _args.print_data_on(st); |
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331 } |
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332 if (has_return()) { |
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333 tab(st, true); |
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334 st->print("return type"); |
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335 _ret.print_data_on(st); |
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336 } |
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337 } |
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338 |
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339 void VirtualCallTypeData::print_data_on(outputStream* st) const { |
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340 VirtualCallData::print_data_on(st); |
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341 if (has_arguments()) { |
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342 tab(st, true); |
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343 st->print("argument types"); |
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344 _args.print_data_on(st); |
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345 } |
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346 if (has_return()) { |
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347 tab(st, true); |
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348 st->print("return type"); |
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349 _ret.print_data_on(st); |
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350 } |
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351 } |
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352 #endif |
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353 |
0 | 354 // ================================================================== |
355 // ReceiverTypeData | |
356 // | |
357 // A ReceiverTypeData is used to access profiling information about a | |
358 // dynamic type check. It consists of a counter which counts the total times | |
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359 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 360 // which are used to store a type profile for the receiver of the check. |
361 | |
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362 void ReceiverTypeData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
941 | 363 for (uint row = 0; row < row_limit(); row++) { |
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364 Klass* p = receiver(row); |
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365 if (p != NULL && !p->is_loader_alive(is_alive_cl)) { |
941 | 366 clear_row(row); |
367 } | |
368 } | |
369 } | |
370 | |
0 | 371 #ifndef PRODUCT |
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372 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const { |
0 | 373 uint row; |
374 int entries = 0; | |
375 for (row = 0; row < row_limit(); row++) { | |
376 if (receiver(row) != NULL) entries++; | |
377 } | |
378 st->print_cr("count(%u) entries(%u)", count(), entries); | |
1783 | 379 int total = count(); |
380 for (row = 0; row < row_limit(); row++) { | |
381 if (receiver(row) != NULL) { | |
382 total += receiver_count(row); | |
383 } | |
384 } | |
0 | 385 for (row = 0; row < row_limit(); row++) { |
386 if (receiver(row) != NULL) { | |
387 tab(st); | |
388 receiver(row)->print_value_on(st); | |
1783 | 389 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total); |
0 | 390 } |
391 } | |
392 } | |
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393 void ReceiverTypeData::print_data_on(outputStream* st) const { |
0 | 394 print_shared(st, "ReceiverTypeData"); |
395 print_receiver_data_on(st); | |
396 } | |
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397 void VirtualCallData::print_data_on(outputStream* st) const { |
0 | 398 print_shared(st, "VirtualCallData"); |
399 print_receiver_data_on(st); | |
400 } | |
401 #endif // !PRODUCT | |
402 | |
403 // ================================================================== | |
404 // RetData | |
405 // | |
406 // A RetData is used to access profiling information for a ret bytecode. | |
407 // It is composed of a count of the number of times that the ret has | |
408 // been executed, followed by a series of triples of the form | |
409 // (bci, count, di) which count the number of times that some bci was the | |
410 // target of the ret and cache a corresponding displacement. | |
411 | |
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412 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 413 for (uint row = 0; row < row_limit(); row++) { |
414 set_bci_displacement(row, -1); | |
415 set_bci(row, no_bci); | |
416 } | |
417 // release so other threads see a consistent state. bci is used as | |
418 // a valid flag for bci_displacement. | |
419 OrderAccess::release(); | |
420 } | |
421 | |
422 // This routine needs to atomically update the RetData structure, so the | |
423 // caller needs to hold the RetData_lock before it gets here. Since taking | |
424 // the lock can block (and allow GC) and since RetData is a ProfileData is a | |
425 // wrapper around a derived oop, taking the lock in _this_ method will | |
426 // basically cause the 'this' pointer's _data field to contain junk after the | |
427 // lock. We require the caller to take the lock before making the ProfileData | |
428 // structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret | |
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429 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) { |
0 | 430 // First find the mdp which corresponds to the return bci. |
431 address mdp = h_mdo->bci_to_dp(return_bci); | |
432 | |
433 // Now check to see if any of the cache slots are open. | |
434 for (uint row = 0; row < row_limit(); row++) { | |
435 if (bci(row) == no_bci) { | |
436 set_bci_displacement(row, mdp - dp()); | |
437 set_bci_count(row, DataLayout::counter_increment); | |
438 // Barrier to ensure displacement is written before the bci; allows | |
439 // the interpreter to read displacement without fear of race condition. | |
440 release_set_bci(row, return_bci); | |
441 break; | |
442 } | |
443 } | |
444 return mdp; | |
445 } | |
446 | |
447 | |
448 #ifndef PRODUCT | |
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449 void RetData::print_data_on(outputStream* st) const { |
0 | 450 print_shared(st, "RetData"); |
451 uint row; | |
452 int entries = 0; | |
453 for (row = 0; row < row_limit(); row++) { | |
454 if (bci(row) != no_bci) entries++; | |
455 } | |
456 st->print_cr("count(%u) entries(%u)", count(), entries); | |
457 for (row = 0; row < row_limit(); row++) { | |
458 if (bci(row) != no_bci) { | |
459 tab(st); | |
460 st->print_cr("bci(%d: count(%u) displacement(%d))", | |
461 bci(row), bci_count(row), bci_displacement(row)); | |
462 } | |
463 } | |
464 } | |
465 #endif // !PRODUCT | |
466 | |
467 // ================================================================== | |
468 // BranchData | |
469 // | |
470 // A BranchData is used to access profiling data for a two-way branch. | |
471 // It consists of taken and not_taken counts as well as a data displacement | |
472 // for the taken case. | |
473 | |
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474 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 475 assert(stream->bci() == bci(), "wrong pos"); |
476 int target = stream->dest(); | |
477 int my_di = mdo->dp_to_di(dp()); | |
478 int target_di = mdo->bci_to_di(target); | |
479 int offset = target_di - my_di; | |
480 set_displacement(offset); | |
481 } | |
482 | |
483 #ifndef PRODUCT | |
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484 void BranchData::print_data_on(outputStream* st) const { |
0 | 485 print_shared(st, "BranchData"); |
486 st->print_cr("taken(%u) displacement(%d)", | |
487 taken(), displacement()); | |
488 tab(st); | |
489 st->print_cr("not taken(%u)", not_taken()); | |
490 } | |
491 #endif | |
492 | |
493 // ================================================================== | |
494 // MultiBranchData | |
495 // | |
496 // A MultiBranchData is used to access profiling information for | |
497 // a multi-way branch (*switch bytecodes). It consists of a series | |
498 // of (count, displacement) pairs, which count the number of times each | |
499 // case was taken and specify the data displacment for each branch target. | |
500 | |
501 int MultiBranchData::compute_cell_count(BytecodeStream* stream) { | |
502 int cell_count = 0; | |
503 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 504 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
505 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default | |
0 | 506 } else { |
2142 | 507 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
508 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default | |
0 | 509 } |
510 return cell_count; | |
511 } | |
512 | |
513 void MultiBranchData::post_initialize(BytecodeStream* stream, | |
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514 MethodData* mdo) { |
0 | 515 assert(stream->bci() == bci(), "wrong pos"); |
516 int target; | |
517 int my_di; | |
518 int target_di; | |
519 int offset; | |
520 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 521 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
522 int len = sw.length(); | |
0 | 523 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); |
524 for (int count = 0; count < len; count++) { | |
2142 | 525 target = sw.dest_offset_at(count) + bci(); |
0 | 526 my_di = mdo->dp_to_di(dp()); |
527 target_di = mdo->bci_to_di(target); | |
528 offset = target_di - my_di; | |
529 set_displacement_at(count, offset); | |
530 } | |
2142 | 531 target = sw.default_offset() + bci(); |
0 | 532 my_di = mdo->dp_to_di(dp()); |
533 target_di = mdo->bci_to_di(target); | |
534 offset = target_di - my_di; | |
535 set_default_displacement(offset); | |
536 | |
537 } else { | |
2142 | 538 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
539 int npairs = sw.number_of_pairs(); | |
0 | 540 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); |
541 for (int count = 0; count < npairs; count++) { | |
2142 | 542 LookupswitchPair pair = sw.pair_at(count); |
543 target = pair.offset() + bci(); | |
0 | 544 my_di = mdo->dp_to_di(dp()); |
545 target_di = mdo->bci_to_di(target); | |
546 offset = target_di - my_di; | |
547 set_displacement_at(count, offset); | |
548 } | |
2142 | 549 target = sw.default_offset() + bci(); |
0 | 550 my_di = mdo->dp_to_di(dp()); |
551 target_di = mdo->bci_to_di(target); | |
552 offset = target_di - my_di; | |
553 set_default_displacement(offset); | |
554 } | |
555 } | |
556 | |
557 #ifndef PRODUCT | |
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558 void MultiBranchData::print_data_on(outputStream* st) const { |
0 | 559 print_shared(st, "MultiBranchData"); |
560 st->print_cr("default_count(%u) displacement(%d)", | |
561 default_count(), default_displacement()); | |
562 int cases = number_of_cases(); | |
563 for (int i = 0; i < cases; i++) { | |
564 tab(st); | |
565 st->print_cr("count(%u) displacement(%d)", | |
566 count_at(i), displacement_at(i)); | |
567 } | |
568 } | |
569 #endif | |
570 | |
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571 #ifndef PRODUCT |
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572 void ArgInfoData::print_data_on(outputStream* st) const { |
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573 print_shared(st, "ArgInfoData"); |
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574 int nargs = number_of_args(); |
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575 for (int i = 0; i < nargs; i++) { |
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576 st->print(" 0x%x", arg_modified(i)); |
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577 } |
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578 st->cr(); |
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579 } |
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580 |
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581 #endif |
0 | 582 // ================================================================== |
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583 // MethodData* |
0 | 584 // |
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585 // A MethodData* holds information which has been collected about |
0 | 586 // a method. |
587 | |
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588 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { |
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589 int size = MethodData::compute_allocation_size_in_words(method); |
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590 |
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591 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) |
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592 MethodData(method(), size, CHECK_NULL); |
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593 } |
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594 |
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595 int MethodData::bytecode_cell_count(Bytecodes::Code code) { |
8860 | 596 #if defined(COMPILER1) && !defined(COMPILER2) |
597 return no_profile_data; | |
598 #else | |
0 | 599 switch (code) { |
600 case Bytecodes::_checkcast: | |
601 case Bytecodes::_instanceof: | |
602 case Bytecodes::_aastore: | |
603 if (TypeProfileCasts) { | |
604 return ReceiverTypeData::static_cell_count(); | |
605 } else { | |
606 return BitData::static_cell_count(); | |
607 } | |
608 case Bytecodes::_invokespecial: | |
609 case Bytecodes::_invokestatic: | |
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610 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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611 return variable_cell_count; |
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612 } else { |
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613 return CounterData::static_cell_count(); |
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614 } |
0 | 615 case Bytecodes::_goto: |
616 case Bytecodes::_goto_w: | |
617 case Bytecodes::_jsr: | |
618 case Bytecodes::_jsr_w: | |
619 return JumpData::static_cell_count(); | |
620 case Bytecodes::_invokevirtual: | |
621 case Bytecodes::_invokeinterface: | |
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622 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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623 return variable_cell_count; |
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624 } else { |
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625 return VirtualCallData::static_cell_count(); |
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626 } |
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627 case Bytecodes::_invokedynamic: |
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628 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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629 return variable_cell_count; |
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630 } else { |
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631 return CounterData::static_cell_count(); |
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632 } |
0 | 633 case Bytecodes::_ret: |
634 return RetData::static_cell_count(); | |
635 case Bytecodes::_ifeq: | |
636 case Bytecodes::_ifne: | |
637 case Bytecodes::_iflt: | |
638 case Bytecodes::_ifge: | |
639 case Bytecodes::_ifgt: | |
640 case Bytecodes::_ifle: | |
641 case Bytecodes::_if_icmpeq: | |
642 case Bytecodes::_if_icmpne: | |
643 case Bytecodes::_if_icmplt: | |
644 case Bytecodes::_if_icmpge: | |
645 case Bytecodes::_if_icmpgt: | |
646 case Bytecodes::_if_icmple: | |
647 case Bytecodes::_if_acmpeq: | |
648 case Bytecodes::_if_acmpne: | |
649 case Bytecodes::_ifnull: | |
650 case Bytecodes::_ifnonnull: | |
651 return BranchData::static_cell_count(); | |
652 case Bytecodes::_lookupswitch: | |
653 case Bytecodes::_tableswitch: | |
654 return variable_cell_count; | |
655 } | |
656 return no_profile_data; | |
8860 | 657 #endif |
0 | 658 } |
659 | |
660 // Compute the size of the profiling information corresponding to | |
661 // the current bytecode. | |
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662 int MethodData::compute_data_size(BytecodeStream* stream) { |
0 | 663 int cell_count = bytecode_cell_count(stream->code()); |
664 if (cell_count == no_profile_data) { | |
665 return 0; | |
666 } | |
667 if (cell_count == variable_cell_count) { | |
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668 switch (stream->code()) { |
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669 case Bytecodes::_lookupswitch: |
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670 case Bytecodes::_tableswitch: |
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671 cell_count = MultiBranchData::compute_cell_count(stream); |
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672 break; |
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673 case Bytecodes::_invokespecial: |
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674 case Bytecodes::_invokestatic: |
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675 case Bytecodes::_invokedynamic: |
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676 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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677 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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678 profile_return_for_invoke(stream->method(), stream->bci())) { |
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679 cell_count = CallTypeData::compute_cell_count(stream); |
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680 } else { |
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681 cell_count = CounterData::static_cell_count(); |
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682 } |
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683 break; |
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684 case Bytecodes::_invokevirtual: |
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685 case Bytecodes::_invokeinterface: { |
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686 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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687 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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688 profile_return_for_invoke(stream->method(), stream->bci())) { |
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689 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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690 } else { |
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691 cell_count = VirtualCallData::static_cell_count(); |
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692 } |
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693 break; |
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694 } |
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695 default: |
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696 fatal("unexpected bytecode for var length profile data"); |
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697 } |
0 | 698 } |
699 // Note: cell_count might be zero, meaning that there is just | |
700 // a DataLayout header, with no extra cells. | |
701 assert(cell_count >= 0, "sanity"); | |
702 return DataLayout::compute_size_in_bytes(cell_count); | |
703 } | |
704 | |
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705 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) { |
0 | 706 if (ProfileTraps) { |
707 // Assume that up to 3% of BCIs with no MDP will need to allocate one. | |
708 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; | |
709 // If the method is large, let the extra BCIs grow numerous (to ~1%). | |
710 int one_percent_of_data | |
711 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); | |
712 if (extra_data_count < one_percent_of_data) | |
713 extra_data_count = one_percent_of_data; | |
714 if (extra_data_count > empty_bc_count) | |
715 extra_data_count = empty_bc_count; // no need for more | |
716 return extra_data_count; | |
717 } else { | |
718 return 0; | |
719 } | |
720 } | |
721 | |
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722 // Compute the size of the MethodData* necessary to store |
0 | 723 // profiling information about a given method. Size is in bytes. |
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724 int MethodData::compute_allocation_size_in_bytes(methodHandle method) { |
0 | 725 int data_size = 0; |
726 BytecodeStream stream(method); | |
727 Bytecodes::Code c; | |
728 int empty_bc_count = 0; // number of bytecodes lacking data | |
729 while ((c = stream.next()) >= 0) { | |
730 int size_in_bytes = compute_data_size(&stream); | |
731 data_size += size_in_bytes; | |
732 if (size_in_bytes == 0) empty_bc_count += 1; | |
733 } | |
734 int object_size = in_bytes(data_offset()) + data_size; | |
735 | |
736 // Add some extra DataLayout cells (at least one) to track stray traps. | |
737 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); | |
738 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); | |
739 | |
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740 // Add a cell to record information about modified arguments. |
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741 int arg_size = method->size_of_parameters(); |
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742 object_size += DataLayout::compute_size_in_bytes(arg_size+1); |
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743 |
0 | 744 return object_size; |
745 } | |
746 | |
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747 // Compute the size of the MethodData* necessary to store |
0 | 748 // profiling information about a given method. Size is in words |
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749 int MethodData::compute_allocation_size_in_words(methodHandle method) { |
0 | 750 int byte_size = compute_allocation_size_in_bytes(method); |
751 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; | |
752 return align_object_size(word_size); | |
753 } | |
754 | |
755 // Initialize an individual data segment. Returns the size of | |
756 // the segment in bytes. | |
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757 int MethodData::initialize_data(BytecodeStream* stream, |
0 | 758 int data_index) { |
8860 | 759 #if defined(COMPILER1) && !defined(COMPILER2) |
760 return 0; | |
761 #else | |
0 | 762 int cell_count = -1; |
763 int tag = DataLayout::no_tag; | |
764 DataLayout* data_layout = data_layout_at(data_index); | |
765 Bytecodes::Code c = stream->code(); | |
766 switch (c) { | |
767 case Bytecodes::_checkcast: | |
768 case Bytecodes::_instanceof: | |
769 case Bytecodes::_aastore: | |
770 if (TypeProfileCasts) { | |
771 cell_count = ReceiverTypeData::static_cell_count(); | |
772 tag = DataLayout::receiver_type_data_tag; | |
773 } else { | |
774 cell_count = BitData::static_cell_count(); | |
775 tag = DataLayout::bit_data_tag; | |
776 } | |
777 break; | |
778 case Bytecodes::_invokespecial: | |
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779 case Bytecodes::_invokestatic: { |
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780 int counter_data_cell_count = CounterData::static_cell_count(); |
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781 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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782 profile_return_for_invoke(stream->method(), stream->bci())) { |
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783 cell_count = CallTypeData::compute_cell_count(stream); |
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784 } else { |
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785 cell_count = counter_data_cell_count; |
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786 } |
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787 if (cell_count > counter_data_cell_count) { |
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788 tag = DataLayout::call_type_data_tag; |
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789 } else { |
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790 tag = DataLayout::counter_data_tag; |
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791 } |
0 | 792 break; |
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793 } |
0 | 794 case Bytecodes::_goto: |
795 case Bytecodes::_goto_w: | |
796 case Bytecodes::_jsr: | |
797 case Bytecodes::_jsr_w: | |
798 cell_count = JumpData::static_cell_count(); | |
799 tag = DataLayout::jump_data_tag; | |
800 break; | |
801 case Bytecodes::_invokevirtual: | |
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802 case Bytecodes::_invokeinterface: { |
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803 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); |
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804 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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805 profile_return_for_invoke(stream->method(), stream->bci())) { |
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806 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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807 } else { |
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808 cell_count = virtual_call_data_cell_count; |
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809 } |
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810 if (cell_count > virtual_call_data_cell_count) { |
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811 tag = DataLayout::virtual_call_type_data_tag; |
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812 } else { |
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813 tag = DataLayout::virtual_call_data_tag; |
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814 } |
0 | 815 break; |
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816 } |
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817 case Bytecodes::_invokedynamic: { |
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818 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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819 int counter_data_cell_count = CounterData::static_cell_count(); |
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820 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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821 profile_return_for_invoke(stream->method(), stream->bci())) { |
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822 cell_count = CallTypeData::compute_cell_count(stream); |
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823 } else { |
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824 cell_count = counter_data_cell_count; |
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825 } |
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826 if (cell_count > counter_data_cell_count) { |
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827 tag = DataLayout::call_type_data_tag; |
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828 } else { |
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829 tag = DataLayout::counter_data_tag; |
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830 } |
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831 break; |
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832 } |
0 | 833 case Bytecodes::_ret: |
834 cell_count = RetData::static_cell_count(); | |
835 tag = DataLayout::ret_data_tag; | |
836 break; | |
837 case Bytecodes::_ifeq: | |
838 case Bytecodes::_ifne: | |
839 case Bytecodes::_iflt: | |
840 case Bytecodes::_ifge: | |
841 case Bytecodes::_ifgt: | |
842 case Bytecodes::_ifle: | |
843 case Bytecodes::_if_icmpeq: | |
844 case Bytecodes::_if_icmpne: | |
845 case Bytecodes::_if_icmplt: | |
846 case Bytecodes::_if_icmpge: | |
847 case Bytecodes::_if_icmpgt: | |
848 case Bytecodes::_if_icmple: | |
849 case Bytecodes::_if_acmpeq: | |
850 case Bytecodes::_if_acmpne: | |
851 case Bytecodes::_ifnull: | |
852 case Bytecodes::_ifnonnull: | |
853 cell_count = BranchData::static_cell_count(); | |
854 tag = DataLayout::branch_data_tag; | |
855 break; | |
856 case Bytecodes::_lookupswitch: | |
857 case Bytecodes::_tableswitch: | |
858 cell_count = MultiBranchData::compute_cell_count(stream); | |
859 tag = DataLayout::multi_branch_data_tag; | |
860 break; | |
861 } | |
862 assert(tag == DataLayout::multi_branch_data_tag || | |
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863 ((MethodData::profile_arguments() || MethodData::profile_return()) && |
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864 (tag == DataLayout::call_type_data_tag || |
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865 tag == DataLayout::counter_data_tag || |
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866 tag == DataLayout::virtual_call_type_data_tag || |
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867 tag == DataLayout::virtual_call_data_tag)) || |
0 | 868 cell_count == bytecode_cell_count(c), "cell counts must agree"); |
869 if (cell_count >= 0) { | |
870 assert(tag != DataLayout::no_tag, "bad tag"); | |
871 assert(bytecode_has_profile(c), "agree w/ BHP"); | |
872 data_layout->initialize(tag, stream->bci(), cell_count); | |
873 return DataLayout::compute_size_in_bytes(cell_count); | |
874 } else { | |
875 assert(!bytecode_has_profile(c), "agree w/ !BHP"); | |
876 return 0; | |
877 } | |
8860 | 878 #endif |
0 | 879 } |
880 | |
881 // Get the data at an arbitrary (sort of) data index. | |
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882 ProfileData* MethodData::data_at(int data_index) const { |
0 | 883 if (out_of_bounds(data_index)) { |
884 return NULL; | |
885 } | |
886 DataLayout* data_layout = data_layout_at(data_index); | |
941 | 887 return data_layout->data_in(); |
888 } | |
0 | 889 |
941 | 890 ProfileData* DataLayout::data_in() { |
891 switch (tag()) { | |
0 | 892 case DataLayout::no_tag: |
893 default: | |
894 ShouldNotReachHere(); | |
895 return NULL; | |
896 case DataLayout::bit_data_tag: | |
941 | 897 return new BitData(this); |
0 | 898 case DataLayout::counter_data_tag: |
941 | 899 return new CounterData(this); |
0 | 900 case DataLayout::jump_data_tag: |
941 | 901 return new JumpData(this); |
0 | 902 case DataLayout::receiver_type_data_tag: |
941 | 903 return new ReceiverTypeData(this); |
0 | 904 case DataLayout::virtual_call_data_tag: |
941 | 905 return new VirtualCallData(this); |
0 | 906 case DataLayout::ret_data_tag: |
941 | 907 return new RetData(this); |
0 | 908 case DataLayout::branch_data_tag: |
941 | 909 return new BranchData(this); |
0 | 910 case DataLayout::multi_branch_data_tag: |
941 | 911 return new MultiBranchData(this); |
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912 case DataLayout::arg_info_data_tag: |
941 | 913 return new ArgInfoData(this); |
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914 case DataLayout::call_type_data_tag: |
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915 return new CallTypeData(this); |
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916 case DataLayout::virtual_call_type_data_tag: |
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917 return new VirtualCallTypeData(this); |
0 | 918 }; |
919 } | |
920 | |
921 // Iteration over data. | |
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922 ProfileData* MethodData::next_data(ProfileData* current) const { |
0 | 923 int current_index = dp_to_di(current->dp()); |
924 int next_index = current_index + current->size_in_bytes(); | |
925 ProfileData* next = data_at(next_index); | |
926 return next; | |
927 } | |
928 | |
929 // Give each of the data entries a chance to perform specific | |
930 // data initialization. | |
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931 void MethodData::post_initialize(BytecodeStream* stream) { |
0 | 932 ResourceMark rm; |
933 ProfileData* data; | |
934 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
935 stream->set_start(data->bci()); | |
936 stream->next(); | |
937 data->post_initialize(stream, this); | |
938 } | |
939 } | |
940 | |
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941 // Initialize the MethodData* corresponding to a given method. |
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942 MethodData::MethodData(methodHandle method, int size, TRAPS) { |
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943 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC |
0 | 944 ResourceMark rm; |
945 // Set the method back-pointer. | |
946 _method = method(); | |
1783 | 947 |
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948 init(); |
0 | 949 set_creation_mileage(mileage_of(method())); |
950 | |
951 // Go through the bytecodes and allocate and initialize the | |
952 // corresponding data cells. | |
953 int data_size = 0; | |
954 int empty_bc_count = 0; // number of bytecodes lacking data | |
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955 _data[0] = 0; // apparently not set below. |
0 | 956 BytecodeStream stream(method); |
957 Bytecodes::Code c; | |
958 while ((c = stream.next()) >= 0) { | |
959 int size_in_bytes = initialize_data(&stream, data_size); | |
960 data_size += size_in_bytes; | |
961 if (size_in_bytes == 0) empty_bc_count += 1; | |
962 } | |
963 _data_size = data_size; | |
964 int object_size = in_bytes(data_offset()) + data_size; | |
965 | |
966 // Add some extra DataLayout cells (at least one) to track stray traps. | |
967 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); | |
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968 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); |
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969 |
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970 // Add a cell to record information about modified arguments. |
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971 // Set up _args_modified array after traps cells so that |
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972 // the code for traps cells works. |
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973 DataLayout *dp = data_layout_at(data_size + extra_size); |
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974 |
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975 int arg_size = method->size_of_parameters(); |
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976 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); |
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977 |
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978 object_size += extra_size + DataLayout::compute_size_in_bytes(arg_size+1); |
0 | 979 |
980 // Set an initial hint. Don't use set_hint_di() because | |
981 // first_di() may be out of bounds if data_size is 0. | |
982 // In that situation, _hint_di is never used, but at | |
983 // least well-defined. | |
984 _hint_di = first_di(); | |
985 | |
986 post_initialize(&stream); | |
987 | |
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988 set_size(object_size); |
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989 } |
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990 |
9080
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991 void MethodData::init() { |
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992 _invocation_counter.init(); |
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993 _backedge_counter.init(); |
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994 _invocation_counter_start = 0; |
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995 _backedge_counter_start = 0; |
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996 _num_loops = 0; |
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997 _num_blocks = 0; |
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998 _highest_comp_level = 0; |
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999 _highest_osr_comp_level = 0; |
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1000 _would_profile = true; |
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1001 |
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1002 // Initialize flags and trap history. |
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1003 _nof_decompiles = 0; |
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1004 _nof_overflow_recompiles = 0; |
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1005 _nof_overflow_traps = 0; |
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1006 clear_escape_info(); |
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1007 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); |
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1008 Copy::zero_to_words((HeapWord*) &_trap_hist, |
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1009 sizeof(_trap_hist) / sizeof(HeapWord)); |
0 | 1010 } |
1011 | |
1012 // Get a measure of how much mileage the method has on it. | |
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1013 int MethodData::mileage_of(Method* method) { |
0 | 1014 int mileage = 0; |
1783 | 1015 if (TieredCompilation) { |
1016 mileage = MAX2(method->invocation_count(), method->backedge_count()); | |
1017 } else { | |
1018 int iic = method->interpreter_invocation_count(); | |
1019 if (mileage < iic) mileage = iic; | |
10105
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1020 MethodCounters* mcs = method->method_counters(); |
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1021 if (mcs != NULL) { |
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1022 InvocationCounter* ic = mcs->invocation_counter(); |
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1023 InvocationCounter* bc = mcs->backedge_counter(); |
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1024 int icval = ic->count(); |
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1025 if (ic->carry()) icval += CompileThreshold; |
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1026 if (mileage < icval) mileage = icval; |
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1027 int bcval = bc->count(); |
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1028 if (bc->carry()) bcval += CompileThreshold; |
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1029 if (mileage < bcval) mileage = bcval; |
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1030 } |
1783 | 1031 } |
0 | 1032 return mileage; |
1033 } | |
1034 | |
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1035 bool MethodData::is_mature() const { |
1783 | 1036 return CompilationPolicy::policy()->is_mature(_method); |
0 | 1037 } |
1038 | |
1039 // Translate a bci to its corresponding data index (di). | |
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1040 address MethodData::bci_to_dp(int bci) { |
0 | 1041 ResourceMark rm; |
1042 ProfileData* data = data_before(bci); | |
1043 ProfileData* prev = NULL; | |
1044 for ( ; is_valid(data); data = next_data(data)) { | |
1045 if (data->bci() >= bci) { | |
1046 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); | |
1047 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); | |
1048 return data->dp(); | |
1049 } | |
1050 prev = data; | |
1051 } | |
1052 return (address)limit_data_position(); | |
1053 } | |
1054 | |
1055 // Translate a bci to its corresponding data, or NULL. | |
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1056 ProfileData* MethodData::bci_to_data(int bci) { |
0 | 1057 ProfileData* data = data_before(bci); |
1058 for ( ; is_valid(data); data = next_data(data)) { | |
1059 if (data->bci() == bci) { | |
1060 set_hint_di(dp_to_di(data->dp())); | |
1061 return data; | |
1062 } else if (data->bci() > bci) { | |
1063 break; | |
1064 } | |
1065 } | |
1066 return bci_to_extra_data(bci, false); | |
1067 } | |
1068 | |
1069 // Translate a bci to its corresponding extra data, or NULL. | |
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1070 ProfileData* MethodData::bci_to_extra_data(int bci, bool create_if_missing) { |
0 | 1071 DataLayout* dp = extra_data_base(); |
1072 DataLayout* end = extra_data_limit(); | |
1073 DataLayout* avail = NULL; | |
1074 for (; dp < end; dp = next_extra(dp)) { | |
1075 // No need for "OrderAccess::load_acquire" ops, | |
1076 // since the data structure is monotonic. | |
1077 if (dp->tag() == DataLayout::no_tag) break; | |
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1078 if (dp->tag() == DataLayout::arg_info_data_tag) { |
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1079 dp = end; // ArgInfoData is at the end of extra data section. |
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1080 break; |
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1081 } |
0 | 1082 if (dp->bci() == bci) { |
1083 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
1084 return new BitData(dp); | |
1085 } | |
1086 } | |
1087 if (create_if_missing && dp < end) { | |
1088 // Allocate this one. There is no mutual exclusion, | |
1089 // so two threads could allocate different BCIs to the | |
1090 // same data layout. This means these extra data | |
1091 // records, like most other MDO contents, must not be | |
1092 // trusted too much. | |
1093 DataLayout temp; | |
1094 temp.initialize(DataLayout::bit_data_tag, bci, 0); | |
1095 dp->release_set_header(temp.header()); | |
1096 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
1097 //NO: assert(dp->bci() == bci, "no concurrent allocation"); | |
1098 return new BitData(dp); | |
1099 } | |
1100 return NULL; | |
1101 } | |
1102 | |
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1103 ArgInfoData *MethodData::arg_info() { |
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1104 DataLayout* dp = extra_data_base(); |
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1105 DataLayout* end = extra_data_limit(); |
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1106 for (; dp < end; dp = next_extra(dp)) { |
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1107 if (dp->tag() == DataLayout::arg_info_data_tag) |
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1108 return new ArgInfoData(dp); |
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1109 } |
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1110 return NULL; |
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1111 } |
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1112 |
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1113 // Printing |
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1114 |
0 | 1115 #ifndef PRODUCT |
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1116 |
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1117 void MethodData::print_on(outputStream* st) const { |
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1118 assert(is_methodData(), "should be method data"); |
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1119 st->print("method data for "); |
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1120 method()->print_value_on(st); |
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1121 st->cr(); |
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1122 print_data_on(st); |
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1123 } |
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1124 |
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1125 #endif //PRODUCT |
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1126 |
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1127 void MethodData::print_value_on(outputStream* st) const { |
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1128 assert(is_methodData(), "should be method data"); |
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1129 st->print("method data for "); |
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1130 method()->print_value_on(st); |
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1131 } |
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1132 |
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1133 #ifndef PRODUCT |
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1134 void MethodData::print_data_on(outputStream* st) const { |
0 | 1135 ResourceMark rm; |
1136 ProfileData* data = first_data(); | |
1137 for ( ; is_valid(data); data = next_data(data)) { | |
1138 st->print("%d", dp_to_di(data->dp())); | |
1139 st->fill_to(6); | |
1140 data->print_data_on(st); | |
1141 } | |
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1142 st->print_cr("--- Extra data:"); |
0 | 1143 DataLayout* dp = extra_data_base(); |
1144 DataLayout* end = extra_data_limit(); | |
1145 for (; dp < end; dp = next_extra(dp)) { | |
1146 // No need for "OrderAccess::load_acquire" ops, | |
1147 // since the data structure is monotonic. | |
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1148 if (dp->tag() == DataLayout::no_tag) continue; |
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1149 if (dp->tag() == DataLayout::bit_data_tag) { |
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1150 data = new BitData(dp); |
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1151 } else { |
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1152 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); |
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1153 data = new ArgInfoData(dp); |
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1154 dp = end; // ArgInfoData is at the end of extra data section. |
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1155 } |
0 | 1156 st->print("%d", dp_to_di(data->dp())); |
1157 st->fill_to(6); | |
1158 data->print_data_on(st); | |
1159 } | |
1160 } | |
1161 #endif | |
1162 | |
7956 | 1163 #if INCLUDE_SERVICES |
1164 // Size Statistics | |
1165 void MethodData::collect_statistics(KlassSizeStats *sz) const { | |
1166 int n = sz->count(this); | |
1167 sz->_method_data_bytes += n; | |
1168 sz->_method_all_bytes += n; | |
1169 sz->_rw_bytes += n; | |
1170 } | |
1171 #endif // INCLUDE_SERVICES | |
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1172 |
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1173 // Verification |
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1174 |
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1175 void MethodData::verify_on(outputStream* st) { |
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1176 guarantee(is_methodData(), "object must be method data"); |
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1177 // guarantee(m->is_perm(), "should be in permspace"); |
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1178 this->verify_data_on(st); |
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1179 } |
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1180 |
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1181 void MethodData::verify_data_on(outputStream* st) { |
0 | 1182 NEEDS_CLEANUP; |
1183 // not yet implemented. | |
1184 } | |
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1185 |
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1186 bool MethodData::profile_jsr292(methodHandle m, int bci) { |
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1187 if (m->is_compiled_lambda_form()) { |
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1188 return true; |
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1189 } |
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1190 |
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1191 Bytecode_invoke inv(m , bci); |
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1192 return inv.is_invokedynamic() || inv.is_invokehandle(); |
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1193 } |
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1194 |
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1195 int MethodData::profile_arguments_flag() { |
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1196 return TypeProfileLevel % 10; |
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1197 } |
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1198 |
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1199 bool MethodData::profile_arguments() { |
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1200 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; |
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1201 } |
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1202 |
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1203 bool MethodData::profile_arguments_jsr292_only() { |
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1204 return profile_arguments_flag() == type_profile_jsr292; |
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1205 } |
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1206 |
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1207 bool MethodData::profile_all_arguments() { |
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1208 return profile_arguments_flag() == type_profile_all; |
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1209 } |
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1210 |
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1211 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { |
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1212 if (!profile_arguments()) { |
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1213 return false; |
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1214 } |
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1215 |
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1216 if (profile_all_arguments()) { |
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1217 return true; |
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1218 } |
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1219 |
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1220 assert(profile_arguments_jsr292_only(), "inconsistent"); |
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1221 return profile_jsr292(m, bci); |
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1222 } |
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1223 |
12882
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1224 int MethodData::profile_return_flag() { |
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1225 return TypeProfileLevel / 10; |
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1226 } |
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1227 |
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1228 bool MethodData::profile_return() { |
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1229 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; |
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1230 } |
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1231 |
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1232 bool MethodData::profile_return_jsr292_only() { |
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1233 return profile_return_flag() == type_profile_jsr292; |
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1234 } |
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1235 |
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1236 bool MethodData::profile_all_return() { |
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1237 return profile_return_flag() == type_profile_all; |
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1238 } |
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1239 |
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1240 bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { |
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1241 if (!profile_return()) { |
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1242 return false; |
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1243 } |
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1244 |
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1245 if (profile_all_return()) { |
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1246 return true; |
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1247 } |
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1248 |
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1249 assert(profile_return_jsr292_only(), "inconsistent"); |
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1250 return profile_jsr292(m, bci); |
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1251 } |