Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.cpp @ 15306:7e0563f0d249
Rename LIRFrameStateBuilder to BaselineFrameStateBuilder.
author | Josef Eisl <josef.eisl@jku.at> |
---|---|
date | Tue, 22 Apr 2014 20:16:38 +0200 |
parents | 4ca6dc0799b6 |
children | 52b4284cb496 |
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 * | |
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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) { | |
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44 return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag) || (tag == parameters_type_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 | |
14909 | 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(); | |
14909 | 95 if (flags != 0) |
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 | |
14909 | 112 void BitData::print_data_on(outputStream* st) const { |
113 print_shared(st, "BitData"); | |
0 | 114 } |
115 #endif // !PRODUCT | |
116 | |
117 // ================================================================== | |
118 // CounterData | |
119 // | |
120 // A CounterData corresponds to a simple counter. | |
121 | |
122 #ifndef PRODUCT | |
14909 | 123 void CounterData::print_data_on(outputStream* st) const { |
124 print_shared(st, "CounterData"); | |
0 | 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 | |
14909 | 153 void JumpData::print_data_on(outputStream* st) const { |
154 print_shared(st, "JumpData"); | |
0 | 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, bool include_receiver, int max) { |
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160 // Parameter profiling include the receiver |
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161 int args_count = include_receiver ? 1 : 0; |
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162 ResourceMark rm; |
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163 SignatureStream ss(signature); |
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164 args_count += ss.reference_parameter_count(); |
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165 args_count = MIN2(args_count, max); |
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166 return args_count * per_arg_cell_count; |
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167 } |
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168 |
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169 int TypeEntriesAtCall::compute_cell_count(BytecodeStream* stream) { |
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170 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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171 assert(TypeStackSlotEntries::per_arg_count() > ReturnTypeEntry::static_cell_count(), "code to test for arguments/results broken"); |
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172 Bytecode_invoke inv(stream->method(), stream->bci()); |
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173 int args_cell = 0; |
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174 if (arguments_profiling_enabled()) { |
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175 args_cell = TypeStackSlotEntries::compute_cell_count(inv.signature(), false, TypeProfileArgsLimit); |
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176 } |
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177 int ret_cell = 0; |
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178 if (return_profiling_enabled() && (inv.result_type() == T_OBJECT || inv.result_type() == T_ARRAY)) { |
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179 ret_cell = ReturnTypeEntry::static_cell_count(); |
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180 } |
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181 int header_cell = 0; |
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182 if (args_cell + ret_cell > 0) { |
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183 header_cell = header_cell_count(); |
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184 } |
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185 |
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186 return header_cell + args_cell + ret_cell; |
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187 } |
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188 |
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189 class ArgumentOffsetComputer : public SignatureInfo { |
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190 private: |
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191 int _max; |
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192 GrowableArray<int> _offsets; |
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193 |
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194 void set(int size, BasicType type) { _size += size; } |
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195 void do_object(int begin, int end) { |
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196 if (_offsets.length() < _max) { |
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197 _offsets.push(_size); |
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198 } |
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199 SignatureInfo::do_object(begin, end); |
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200 } |
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201 void do_array (int begin, int end) { |
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202 if (_offsets.length() < _max) { |
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203 _offsets.push(_size); |
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204 } |
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205 SignatureInfo::do_array(begin, end); |
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206 } |
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207 |
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208 public: |
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209 ArgumentOffsetComputer(Symbol* signature, int max) |
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210 : SignatureInfo(signature), _max(max), _offsets(Thread::current(), max) { |
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211 } |
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212 |
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213 int total() { lazy_iterate_parameters(); return _size; } |
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214 |
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215 int off_at(int i) const { return _offsets.at(i); } |
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216 }; |
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217 |
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218 void TypeStackSlotEntries::post_initialize(Symbol* signature, bool has_receiver, bool include_receiver) { |
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219 ResourceMark rm; |
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220 int start = 0; |
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221 // Parameter profiling include the receiver |
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222 if (include_receiver && has_receiver) { |
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223 set_stack_slot(0, 0); |
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224 set_type(0, type_none()); |
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225 start += 1; |
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226 } |
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227 ArgumentOffsetComputer aos(signature, _number_of_entries-start); |
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228 aos.total(); |
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229 for (int i = start; i < _number_of_entries; i++) { |
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230 set_stack_slot(i, aos.off_at(i-start) + (has_receiver ? 1 : 0)); |
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231 set_type(i, type_none()); |
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232 } |
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233 } |
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234 |
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235 void CallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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236 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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237 Bytecode_invoke inv(stream->method(), stream->bci()); |
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238 |
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239 SignatureStream ss(inv.signature()); |
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240 if (has_arguments()) { |
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241 #ifdef ASSERT |
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242 ResourceMark rm; |
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243 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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244 assert(count > 0, "room for args type but none found?"); |
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245 check_number_of_arguments(count); |
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246 #endif |
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247 _args.post_initialize(inv.signature(), inv.has_receiver(), false); |
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248 } |
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249 |
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250 if (has_return()) { |
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251 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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252 _ret.post_initialize(); |
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253 } |
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254 } |
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255 |
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256 void VirtualCallTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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257 assert(Bytecodes::is_invoke(stream->code()), "should be invoke"); |
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258 Bytecode_invoke inv(stream->method(), stream->bci()); |
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259 |
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260 if (has_arguments()) { |
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261 #ifdef ASSERT |
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262 ResourceMark rm; |
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263 SignatureStream ss(inv.signature()); |
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264 int count = MIN2(ss.reference_parameter_count(), (int)TypeProfileArgsLimit); |
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265 assert(count > 0, "room for args type but none found?"); |
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266 check_number_of_arguments(count); |
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267 #endif |
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268 _args.post_initialize(inv.signature(), inv.has_receiver(), false); |
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269 } |
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270 |
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271 if (has_return()) { |
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272 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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273 _ret.post_initialize(); |
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274 } |
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275 } |
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276 |
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277 bool TypeEntries::is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p) { |
13080 | 278 Klass* k = (Klass*)klass_part(p); |
279 return k != NULL && k->is_loader_alive(is_alive_cl); | |
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280 } |
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281 |
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282 void TypeStackSlotEntries::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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283 for (int i = 0; i < _number_of_entries; i++) { |
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284 intptr_t p = type(i); |
13080 | 285 if (!is_loader_alive(is_alive_cl, p)) { |
286 set_type(i, with_status((Klass*)NULL, p)); | |
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287 } |
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288 } |
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289 } |
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290 |
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291 void ReturnTypeEntry::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
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292 intptr_t p = type(); |
13080 | 293 if (!is_loader_alive(is_alive_cl, p)) { |
294 set_type(with_status((Klass*)NULL, p)); | |
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295 } |
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296 } |
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297 |
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298 bool TypeEntriesAtCall::return_profiling_enabled() { |
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299 return MethodData::profile_return(); |
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300 } |
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301 |
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302 bool TypeEntriesAtCall::arguments_profiling_enabled() { |
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303 return MethodData::profile_arguments(); |
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304 } |
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305 |
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306 #ifndef PRODUCT |
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307 void TypeEntries::print_klass(outputStream* st, intptr_t k) { |
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308 if (is_type_none(k)) { |
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309 st->print("none"); |
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310 } else if (is_type_unknown(k)) { |
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311 st->print("unknown"); |
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312 } else { |
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313 valid_klass(k)->print_value_on(st); |
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314 } |
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315 if (was_null_seen(k)) { |
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316 st->print(" (null seen)"); |
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317 } |
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318 } |
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319 |
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320 void TypeStackSlotEntries::print_data_on(outputStream* st) const { |
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321 for (int i = 0; i < _number_of_entries; i++) { |
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322 _pd->tab(st); |
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323 st->print("%d: stack(%u) ", i, stack_slot(i)); |
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324 print_klass(st, type(i)); |
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325 st->cr(); |
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326 } |
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327 } |
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328 |
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329 void ReturnTypeEntry::print_data_on(outputStream* st) const { |
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330 _pd->tab(st); |
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331 print_klass(st, type()); |
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332 st->cr(); |
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333 } |
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334 |
14909 | 335 void CallTypeData::print_data_on(outputStream* st) const { |
336 CounterData::print_data_on(st); | |
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337 if (has_arguments()) { |
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338 tab(st, true); |
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339 st->print("argument types"); |
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340 _args.print_data_on(st); |
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341 } |
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342 if (has_return()) { |
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343 tab(st, true); |
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344 st->print("return type"); |
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345 _ret.print_data_on(st); |
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346 } |
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347 } |
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348 |
14909 | 349 void VirtualCallTypeData::print_data_on(outputStream* st) const { |
350 VirtualCallData::print_data_on(st); | |
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351 if (has_arguments()) { |
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352 tab(st, true); |
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353 st->print("argument types"); |
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354 _args.print_data_on(st); |
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355 } |
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356 if (has_return()) { |
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357 tab(st, true); |
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358 st->print("return type"); |
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359 _ret.print_data_on(st); |
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360 } |
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361 } |
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362 #endif |
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363 |
0 | 364 // ================================================================== |
365 // ReceiverTypeData | |
366 // | |
367 // A ReceiverTypeData is used to access profiling information about a | |
368 // dynamic type check. It consists of a counter which counts the total times | |
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369 // that the check is reached, and a series of (Klass*, count) pairs |
0 | 370 // which are used to store a type profile for the receiver of the check. |
371 | |
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372 void ReceiverTypeData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { |
941 | 373 for (uint row = 0; row < row_limit(); row++) { |
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374 Klass* p = receiver(row); |
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375 if (p != NULL && !p->is_loader_alive(is_alive_cl)) { |
941 | 376 clear_row(row); |
377 } | |
378 } | |
379 } | |
380 | |
9765 | 381 #ifdef GRAAL |
382 void VirtualCallData::clean_weak_klass_links(BoolObjectClosure* is_alive_cl) { | |
383 ReceiverTypeData::clean_weak_klass_links(is_alive_cl); | |
384 for (uint row = 0; row < method_row_limit(); row++) { | |
385 Method* p = method(row); | |
386 if (p != NULL && !p->method_holder()->is_loader_alive(is_alive_cl)) { | |
387 clear_method_row(row); | |
388 } | |
389 } | |
390 } | |
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391 |
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392 void VirtualCallData::clean_weak_method_links() { |
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393 ReceiverTypeData::clean_weak_method_links(); |
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394 for (uint row = 0; row < method_row_limit(); row++) { |
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395 Method* p = method(row); |
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396 if (p != NULL && !p->on_stack()) { |
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397 clear_method_row(row); |
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398 } |
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399 } |
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400 } |
9765 | 401 #endif // GRAAL |
402 | |
0 | 403 #ifndef PRODUCT |
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404 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const { |
0 | 405 uint row; |
406 int entries = 0; | |
407 for (row = 0; row < row_limit(); row++) { | |
408 if (receiver(row) != NULL) entries++; | |
409 } | |
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410 #ifdef GRAAL |
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411 st->print_cr("count(%u) nonprofiled_count(%u) entries(%u)", count(), nonprofiled_count(), entries); |
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412 #else |
0 | 413 st->print_cr("count(%u) entries(%u)", count(), entries); |
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414 #endif |
1783 | 415 int total = count(); |
416 for (row = 0; row < row_limit(); row++) { | |
417 if (receiver(row) != NULL) { | |
418 total += receiver_count(row); | |
419 } | |
420 } | |
0 | 421 for (row = 0; row < row_limit(); row++) { |
422 if (receiver(row) != NULL) { | |
423 tab(st); | |
424 receiver(row)->print_value_on(st); | |
1783 | 425 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total); |
0 | 426 } |
427 } | |
428 } | |
14909 | 429 void ReceiverTypeData::print_data_on(outputStream* st) const { |
430 print_shared(st, "ReceiverTypeData"); | |
0 | 431 print_receiver_data_on(st); |
432 } | |
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433 |
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434 #ifdef GRAAL |
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435 void VirtualCallData::print_method_data_on(outputStream* st) const { |
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436 uint row; |
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437 int entries = 0; |
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438 for (row = 0; row < method_row_limit(); row++) { |
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439 if (method(row) != NULL) entries++; |
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440 } |
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441 tab(st); |
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442 st->print_cr("method_entries(%u)", entries); |
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443 int total = count(); |
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444 for (row = 0; row < method_row_limit(); row++) { |
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445 if (method(row) != NULL) { |
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446 total += method_count(row); |
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447 } |
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448 } |
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449 for (row = 0; row < method_row_limit(); row++) { |
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450 if (method(row) != NULL) { |
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451 tab(st); |
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452 method(row)->print_value_on(st); |
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453 st->print_cr("(%u %4.2f)", method_count(row), (float) method_count(row) / (float) total); |
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454 } |
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455 } |
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456 } |
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457 #endif |
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458 |
14909 | 459 void VirtualCallData::print_data_on(outputStream* st) const { |
460 print_shared(st, "VirtualCallData"); | |
0 | 461 print_receiver_data_on(st); |
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462 #ifdef GRAAL |
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463 print_method_data_on(st); |
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464 #endif |
0 | 465 } |
466 #endif // !PRODUCT | |
467 | |
468 // ================================================================== | |
469 // RetData | |
470 // | |
471 // A RetData is used to access profiling information for a ret bytecode. | |
472 // It is composed of a count of the number of times that the ret has | |
473 // been executed, followed by a series of triples of the form | |
474 // (bci, count, di) which count the number of times that some bci was the | |
475 // target of the ret and cache a corresponding displacement. | |
476 | |
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477 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 478 for (uint row = 0; row < row_limit(); row++) { |
479 set_bci_displacement(row, -1); | |
480 set_bci(row, no_bci); | |
481 } | |
482 // release so other threads see a consistent state. bci is used as | |
483 // a valid flag for bci_displacement. | |
484 OrderAccess::release(); | |
485 } | |
486 | |
487 // This routine needs to atomically update the RetData structure, so the | |
488 // caller needs to hold the RetData_lock before it gets here. Since taking | |
489 // the lock can block (and allow GC) and since RetData is a ProfileData is a | |
490 // wrapper around a derived oop, taking the lock in _this_ method will | |
491 // basically cause the 'this' pointer's _data field to contain junk after the | |
492 // lock. We require the caller to take the lock before making the ProfileData | |
493 // structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret | |
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494 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) { |
0 | 495 // First find the mdp which corresponds to the return bci. |
496 address mdp = h_mdo->bci_to_dp(return_bci); | |
497 | |
498 // Now check to see if any of the cache slots are open. | |
499 for (uint row = 0; row < row_limit(); row++) { | |
500 if (bci(row) == no_bci) { | |
501 set_bci_displacement(row, mdp - dp()); | |
502 set_bci_count(row, DataLayout::counter_increment); | |
503 // Barrier to ensure displacement is written before the bci; allows | |
504 // the interpreter to read displacement without fear of race condition. | |
505 release_set_bci(row, return_bci); | |
506 break; | |
507 } | |
508 } | |
509 return mdp; | |
510 } | |
511 | |
512 | |
513 #ifndef PRODUCT | |
14909 | 514 void RetData::print_data_on(outputStream* st) const { |
515 print_shared(st, "RetData"); | |
0 | 516 uint row; |
517 int entries = 0; | |
518 for (row = 0; row < row_limit(); row++) { | |
519 if (bci(row) != no_bci) entries++; | |
520 } | |
521 st->print_cr("count(%u) entries(%u)", count(), entries); | |
522 for (row = 0; row < row_limit(); row++) { | |
523 if (bci(row) != no_bci) { | |
524 tab(st); | |
525 st->print_cr("bci(%d: count(%u) displacement(%d))", | |
526 bci(row), bci_count(row), bci_displacement(row)); | |
527 } | |
528 } | |
529 } | |
530 #endif // !PRODUCT | |
531 | |
532 // ================================================================== | |
533 // BranchData | |
534 // | |
535 // A BranchData is used to access profiling data for a two-way branch. | |
536 // It consists of taken and not_taken counts as well as a data displacement | |
537 // for the taken case. | |
538 | |
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539 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 540 assert(stream->bci() == bci(), "wrong pos"); |
541 int target = stream->dest(); | |
542 int my_di = mdo->dp_to_di(dp()); | |
543 int target_di = mdo->bci_to_di(target); | |
544 int offset = target_di - my_di; | |
545 set_displacement(offset); | |
546 } | |
547 | |
548 #ifndef PRODUCT | |
14909 | 549 void BranchData::print_data_on(outputStream* st) const { |
550 print_shared(st, "BranchData"); | |
0 | 551 st->print_cr("taken(%u) displacement(%d)", |
552 taken(), displacement()); | |
553 tab(st); | |
554 st->print_cr("not taken(%u)", not_taken()); | |
555 } | |
556 #endif | |
557 | |
558 // ================================================================== | |
559 // MultiBranchData | |
560 // | |
561 // A MultiBranchData is used to access profiling information for | |
562 // a multi-way branch (*switch bytecodes). It consists of a series | |
563 // of (count, displacement) pairs, which count the number of times each | |
564 // case was taken and specify the data displacment for each branch target. | |
565 | |
566 int MultiBranchData::compute_cell_count(BytecodeStream* stream) { | |
567 int cell_count = 0; | |
568 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 569 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
570 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default | |
0 | 571 } else { |
2142 | 572 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
573 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default | |
0 | 574 } |
575 return cell_count; | |
576 } | |
577 | |
578 void MultiBranchData::post_initialize(BytecodeStream* stream, | |
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579 MethodData* mdo) { |
0 | 580 assert(stream->bci() == bci(), "wrong pos"); |
581 int target; | |
582 int my_di; | |
583 int target_di; | |
584 int offset; | |
585 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 586 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
587 int len = sw.length(); | |
0 | 588 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); |
589 for (int count = 0; count < len; count++) { | |
2142 | 590 target = sw.dest_offset_at(count) + bci(); |
0 | 591 my_di = mdo->dp_to_di(dp()); |
592 target_di = mdo->bci_to_di(target); | |
593 offset = target_di - my_di; | |
594 set_displacement_at(count, offset); | |
595 } | |
2142 | 596 target = sw.default_offset() + bci(); |
0 | 597 my_di = mdo->dp_to_di(dp()); |
598 target_di = mdo->bci_to_di(target); | |
599 offset = target_di - my_di; | |
600 set_default_displacement(offset); | |
601 | |
602 } else { | |
2142 | 603 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
604 int npairs = sw.number_of_pairs(); | |
0 | 605 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); |
606 for (int count = 0; count < npairs; count++) { | |
2142 | 607 LookupswitchPair pair = sw.pair_at(count); |
608 target = pair.offset() + bci(); | |
0 | 609 my_di = mdo->dp_to_di(dp()); |
610 target_di = mdo->bci_to_di(target); | |
611 offset = target_di - my_di; | |
612 set_displacement_at(count, offset); | |
613 } | |
2142 | 614 target = sw.default_offset() + bci(); |
0 | 615 my_di = mdo->dp_to_di(dp()); |
616 target_di = mdo->bci_to_di(target); | |
617 offset = target_di - my_di; | |
618 set_default_displacement(offset); | |
619 } | |
620 } | |
621 | |
622 #ifndef PRODUCT | |
14909 | 623 void MultiBranchData::print_data_on(outputStream* st) const { |
624 print_shared(st, "MultiBranchData"); | |
0 | 625 st->print_cr("default_count(%u) displacement(%d)", |
626 default_count(), default_displacement()); | |
627 int cases = number_of_cases(); | |
628 for (int i = 0; i < cases; i++) { | |
629 tab(st); | |
630 st->print_cr("count(%u) displacement(%d)", | |
631 count_at(i), displacement_at(i)); | |
632 } | |
633 } | |
634 #endif | |
635 | |
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636 #ifndef PRODUCT |
14909 | 637 void ArgInfoData::print_data_on(outputStream* st) const { |
638 print_shared(st, "ArgInfoData"); | |
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639 int nargs = number_of_args(); |
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640 for (int i = 0; i < nargs; i++) { |
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641 st->print(" 0x%x", arg_modified(i)); |
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642 } |
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643 st->cr(); |
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644 } |
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645 |
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646 #endif |
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647 |
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648 int ParametersTypeData::compute_cell_count(Method* m) { |
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649 if (!MethodData::profile_parameters_for_method(m)) { |
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650 return 0; |
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651 } |
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652 int max = TypeProfileParmsLimit == -1 ? INT_MAX : TypeProfileParmsLimit; |
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653 int obj_args = TypeStackSlotEntries::compute_cell_count(m->signature(), !m->is_static(), max); |
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654 if (obj_args > 0) { |
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655 return obj_args + 1; // 1 cell for array len |
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656 } |
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657 return 0; |
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658 } |
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659 |
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660 void ParametersTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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661 _parameters.post_initialize(mdo->method()->signature(), !mdo->method()->is_static(), true); |
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662 } |
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663 |
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664 bool ParametersTypeData::profiling_enabled() { |
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665 return MethodData::profile_parameters(); |
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666 } |
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667 |
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668 #ifndef PRODUCT |
14909 | 669 void ParametersTypeData::print_data_on(outputStream* st) const { |
670 st->print("parameter types"); | |
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671 _parameters.print_data_on(st); |
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672 } |
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673 #endif |
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674 |
0 | 675 // ================================================================== |
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676 // MethodData* |
0 | 677 // |
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678 // A MethodData* holds information which has been collected about |
0 | 679 // a method. |
680 | |
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681 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { |
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682 int size = MethodData::compute_allocation_size_in_words(method); |
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683 |
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684 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) |
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685 MethodData(method(), size, CHECK_NULL); |
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686 } |
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687 |
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688 int MethodData::bytecode_cell_count(Bytecodes::Code code) { |
8883 | 689 #if defined(COMPILER1) && !(defined(COMPILER2) || defined(GRAAL)) |
8860 | 690 return no_profile_data; |
691 #else | |
0 | 692 switch (code) { |
693 case Bytecodes::_checkcast: | |
694 case Bytecodes::_instanceof: | |
695 case Bytecodes::_aastore: | |
696 if (TypeProfileCasts) { | |
697 return ReceiverTypeData::static_cell_count(); | |
698 } else { | |
699 return BitData::static_cell_count(); | |
700 } | |
701 case Bytecodes::_invokespecial: | |
702 case Bytecodes::_invokestatic: | |
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703 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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704 return variable_cell_count; |
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|
705 } else { |
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|
706 return CounterData::static_cell_count(); |
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|
707 } |
0 | 708 case Bytecodes::_goto: |
709 case Bytecodes::_goto_w: | |
710 case Bytecodes::_jsr: | |
711 case Bytecodes::_jsr_w: | |
712 return JumpData::static_cell_count(); | |
713 case Bytecodes::_invokevirtual: | |
714 case Bytecodes::_invokeinterface: | |
12882
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715 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
12875
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716 return variable_cell_count; |
d13d7aba8c12
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|
717 } else { |
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718 return VirtualCallData::static_cell_count(); |
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|
719 } |
726
be93aad57795
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196
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|
720 case Bytecodes::_invokedynamic: |
12882
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721 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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722 return variable_cell_count; |
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723 } else { |
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724 return CounterData::static_cell_count(); |
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725 } |
0 | 726 case Bytecodes::_ret: |
727 return RetData::static_cell_count(); | |
728 case Bytecodes::_ifeq: | |
729 case Bytecodes::_ifne: | |
730 case Bytecodes::_iflt: | |
731 case Bytecodes::_ifge: | |
732 case Bytecodes::_ifgt: | |
733 case Bytecodes::_ifle: | |
734 case Bytecodes::_if_icmpeq: | |
735 case Bytecodes::_if_icmpne: | |
736 case Bytecodes::_if_icmplt: | |
737 case Bytecodes::_if_icmpge: | |
738 case Bytecodes::_if_icmpgt: | |
739 case Bytecodes::_if_icmple: | |
740 case Bytecodes::_if_acmpeq: | |
741 case Bytecodes::_if_acmpne: | |
742 case Bytecodes::_ifnull: | |
743 case Bytecodes::_ifnonnull: | |
744 return BranchData::static_cell_count(); | |
745 case Bytecodes::_lookupswitch: | |
746 case Bytecodes::_tableswitch: | |
747 return variable_cell_count; | |
748 } | |
749 return no_profile_data; | |
8860 | 750 #endif |
0 | 751 } |
752 | |
753 // Compute the size of the profiling information corresponding to | |
754 // the current bytecode. | |
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755 int MethodData::compute_data_size(BytecodeStream* stream) { |
0 | 756 int cell_count = bytecode_cell_count(stream->code()); |
757 if (cell_count == no_profile_data) { | |
758 return 0; | |
759 } | |
760 if (cell_count == variable_cell_count) { | |
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761 switch (stream->code()) { |
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762 case Bytecodes::_lookupswitch: |
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763 case Bytecodes::_tableswitch: |
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764 cell_count = MultiBranchData::compute_cell_count(stream); |
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765 break; |
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766 case Bytecodes::_invokespecial: |
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767 case Bytecodes::_invokestatic: |
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|
768 case Bytecodes::_invokedynamic: |
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769 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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770 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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771 profile_return_for_invoke(stream->method(), stream->bci())) { |
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772 cell_count = CallTypeData::compute_cell_count(stream); |
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773 } else { |
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|
774 cell_count = CounterData::static_cell_count(); |
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|
775 } |
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|
776 break; |
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|
777 case Bytecodes::_invokevirtual: |
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778 case Bytecodes::_invokeinterface: { |
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779 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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780 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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781 profile_return_for_invoke(stream->method(), stream->bci())) { |
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782 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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783 } else { |
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784 cell_count = VirtualCallData::static_cell_count(); |
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|
785 } |
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786 break; |
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|
787 } |
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788 default: |
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789 fatal("unexpected bytecode for var length profile data"); |
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790 } |
0 | 791 } |
792 // Note: cell_count might be zero, meaning that there is just | |
793 // a DataLayout header, with no extra cells. | |
794 assert(cell_count >= 0, "sanity"); | |
795 return DataLayout::compute_size_in_bytes(cell_count); | |
796 } | |
797 | |
8616
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Christian Haeubl <haeubl@ssw.jku.at>
parents:
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diff
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|
798 #ifdef GRAAL |
14909 | 799 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) { |
4568
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Christian Haeubl <christian.haeubl@oracle.com>
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800 if (!ProfileTraps) return 0; |
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Christian Haeubl <christian.haeubl@oracle.com>
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4439
diff
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|
801 |
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Christian Haeubl <christian.haeubl@oracle.com>
parents:
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diff
changeset
|
802 // Assume that up to 30% of the possibly trapping BCIs with no MDP will need to allocate one. |
8e1d9c27989a
better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
parents:
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|
803 return MIN2(empty_bc_count, MAX2(4, (empty_bc_count * 30) / 100)); |
8e1d9c27989a
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Christian Haeubl <christian.haeubl@oracle.com>
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804 } |
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better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
parents:
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diff
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|
805 #else |
14909 | 806 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) { |
0 | 807 if (ProfileTraps) { |
808 // Assume that up to 3% of BCIs with no MDP will need to allocate one. | |
809 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; | |
810 // If the method is large, let the extra BCIs grow numerous (to ~1%). | |
811 int one_percent_of_data | |
812 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); | |
813 if (extra_data_count < one_percent_of_data) | |
814 extra_data_count = one_percent_of_data; | |
815 if (extra_data_count > empty_bc_count) | |
816 extra_data_count = empty_bc_count; // no need for more | |
14909 | 817 return extra_data_count; |
0 | 818 } else { |
819 return 0; | |
820 } | |
821 } | |
4568
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better allocation of methodData's extraData so that exceptions and deoptimizations can be recorded more accurately
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4439
diff
changeset
|
822 #endif |
0 | 823 |
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824 // Compute the size of the MethodData* necessary to store |
0 | 825 // profiling information about a given method. Size is in bytes. |
6725
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changeset
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826 int MethodData::compute_allocation_size_in_bytes(methodHandle method) { |
0 | 827 int data_size = 0; |
828 BytecodeStream stream(method); | |
829 Bytecodes::Code c; | |
830 int empty_bc_count = 0; // number of bytecodes lacking data | |
831 while ((c = stream.next()) >= 0) { | |
832 int size_in_bytes = compute_data_size(&stream); | |
833 data_size += size_in_bytes; | |
13181
389d40d7d99f
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Doug Simon <doug.simon@oracle.com>
parents:
13108
diff
changeset
|
834 if (size_in_bytes == 0 GRAAL_ONLY(&& Bytecodes::can_trap(c))) empty_bc_count += 1; |
0 | 835 } |
836 int object_size = in_bytes(data_offset()) + data_size; | |
837 | |
838 // Add some extra DataLayout cells (at least one) to track stray traps. | |
14909 | 839 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); |
0 | 840 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); |
841 | |
45
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diff
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842 // Add a cell to record information about modified arguments. |
48a3fa21394b
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diff
changeset
|
843 int arg_size = method->size_of_parameters(); |
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diff
changeset
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844 object_size += DataLayout::compute_size_in_bytes(arg_size+1); |
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845 |
12962
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|
846 // Reserve room for an area of the MDO dedicated to profiling of |
5ccbab1c69f3
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|
847 // parameters |
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848 int args_cell = ParametersTypeData::compute_cell_count(method()); |
5ccbab1c69f3
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roland
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|
849 if (args_cell > 0) { |
5ccbab1c69f3
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|
850 object_size += DataLayout::compute_size_in_bytes(args_cell); |
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851 } |
0 | 852 return object_size; |
853 } | |
854 | |
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855 // Compute the size of the MethodData* necessary to store |
0 | 856 // profiling information about a given method. Size is in words |
6725
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857 int MethodData::compute_allocation_size_in_words(methodHandle method) { |
0 | 858 int byte_size = compute_allocation_size_in_bytes(method); |
859 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; | |
860 return align_object_size(word_size); | |
861 } | |
862 | |
863 // Initialize an individual data segment. Returns the size of | |
864 // the segment in bytes. | |
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865 int MethodData::initialize_data(BytecodeStream* stream, |
0 | 866 int data_index) { |
8883 | 867 #if defined(COMPILER1) && !(defined(COMPILER2) || defined(GRAAL)) |
8860 | 868 return 0; |
869 #else | |
0 | 870 int cell_count = -1; |
871 int tag = DataLayout::no_tag; | |
872 DataLayout* data_layout = data_layout_at(data_index); | |
873 Bytecodes::Code c = stream->code(); | |
874 switch (c) { | |
875 case Bytecodes::_checkcast: | |
876 case Bytecodes::_instanceof: | |
877 case Bytecodes::_aastore: | |
878 if (TypeProfileCasts) { | |
879 cell_count = ReceiverTypeData::static_cell_count(); | |
880 tag = DataLayout::receiver_type_data_tag; | |
881 } else { | |
882 cell_count = BitData::static_cell_count(); | |
883 tag = DataLayout::bit_data_tag; | |
884 } | |
885 break; | |
886 case Bytecodes::_invokespecial: | |
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887 case Bytecodes::_invokestatic: { |
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|
888 int counter_data_cell_count = CounterData::static_cell_count(); |
12882
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889 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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890 profile_return_for_invoke(stream->method(), stream->bci())) { |
12875
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891 cell_count = CallTypeData::compute_cell_count(stream); |
d13d7aba8c12
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|
892 } else { |
d13d7aba8c12
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changeset
|
893 cell_count = counter_data_cell_count; |
d13d7aba8c12
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changeset
|
894 } |
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|
895 if (cell_count > counter_data_cell_count) { |
d13d7aba8c12
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changeset
|
896 tag = DataLayout::call_type_data_tag; |
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|
897 } else { |
d13d7aba8c12
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|
898 tag = DataLayout::counter_data_tag; |
d13d7aba8c12
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changeset
|
899 } |
0 | 900 break; |
12875
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|
901 } |
0 | 902 case Bytecodes::_goto: |
903 case Bytecodes::_goto_w: | |
904 case Bytecodes::_jsr: | |
905 case Bytecodes::_jsr_w: | |
906 cell_count = JumpData::static_cell_count(); | |
907 tag = DataLayout::jump_data_tag; | |
908 break; | |
909 case Bytecodes::_invokevirtual: | |
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|
910 case Bytecodes::_invokeinterface: { |
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changeset
|
911 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); |
12882
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12875
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912 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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changeset
|
913 profile_return_for_invoke(stream->method(), stream->bci())) { |
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diff
changeset
|
914 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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|
915 } else { |
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916 cell_count = virtual_call_data_cell_count; |
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|
917 } |
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|
918 if (cell_count > virtual_call_data_cell_count) { |
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919 tag = DataLayout::virtual_call_type_data_tag; |
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920 } else { |
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921 tag = DataLayout::virtual_call_data_tag; |
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|
922 } |
0 | 923 break; |
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|
924 } |
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|
925 case Bytecodes::_invokedynamic: { |
726
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|
926 // %%% should make a type profile for any invokedynamic that takes a ref argument |
12875
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927 int counter_data_cell_count = CounterData::static_cell_count(); |
12882
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928 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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929 profile_return_for_invoke(stream->method(), stream->bci())) { |
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930 cell_count = CallTypeData::compute_cell_count(stream); |
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931 } else { |
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|
932 cell_count = counter_data_cell_count; |
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|
933 } |
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934 if (cell_count > counter_data_cell_count) { |
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|
935 tag = DataLayout::call_type_data_tag; |
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936 } else { |
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|
937 tag = DataLayout::counter_data_tag; |
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|
938 } |
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diff
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|
939 break; |
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|
940 } |
0 | 941 case Bytecodes::_ret: |
942 cell_count = RetData::static_cell_count(); | |
943 tag = DataLayout::ret_data_tag; | |
944 break; | |
945 case Bytecodes::_ifeq: | |
946 case Bytecodes::_ifne: | |
947 case Bytecodes::_iflt: | |
948 case Bytecodes::_ifge: | |
949 case Bytecodes::_ifgt: | |
950 case Bytecodes::_ifle: | |
951 case Bytecodes::_if_icmpeq: | |
952 case Bytecodes::_if_icmpne: | |
953 case Bytecodes::_if_icmplt: | |
954 case Bytecodes::_if_icmpge: | |
955 case Bytecodes::_if_icmpgt: | |
956 case Bytecodes::_if_icmple: | |
957 case Bytecodes::_if_acmpeq: | |
958 case Bytecodes::_if_acmpne: | |
959 case Bytecodes::_ifnull: | |
960 case Bytecodes::_ifnonnull: | |
961 cell_count = BranchData::static_cell_count(); | |
962 tag = DataLayout::branch_data_tag; | |
963 break; | |
964 case Bytecodes::_lookupswitch: | |
965 case Bytecodes::_tableswitch: | |
966 cell_count = MultiBranchData::compute_cell_count(stream); | |
967 tag = DataLayout::multi_branch_data_tag; | |
968 break; | |
969 } | |
970 assert(tag == DataLayout::multi_branch_data_tag || | |
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971 ((MethodData::profile_arguments() || MethodData::profile_return()) && |
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972 (tag == DataLayout::call_type_data_tag || |
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973 tag == DataLayout::counter_data_tag || |
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974 tag == DataLayout::virtual_call_type_data_tag || |
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975 tag == DataLayout::virtual_call_data_tag)) || |
0 | 976 cell_count == bytecode_cell_count(c), "cell counts must agree"); |
977 if (cell_count >= 0) { | |
978 assert(tag != DataLayout::no_tag, "bad tag"); | |
979 assert(bytecode_has_profile(c), "agree w/ BHP"); | |
980 data_layout->initialize(tag, stream->bci(), cell_count); | |
981 return DataLayout::compute_size_in_bytes(cell_count); | |
982 } else { | |
983 assert(!bytecode_has_profile(c), "agree w/ !BHP"); | |
984 return 0; | |
985 } | |
8860 | 986 #endif |
0 | 987 } |
988 | |
989 // Get the data at an arbitrary (sort of) data index. | |
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990 ProfileData* MethodData::data_at(int data_index) const { |
0 | 991 if (out_of_bounds(data_index)) { |
992 return NULL; | |
993 } | |
994 DataLayout* data_layout = data_layout_at(data_index); | |
941 | 995 return data_layout->data_in(); |
996 } | |
0 | 997 |
941 | 998 ProfileData* DataLayout::data_in() { |
999 switch (tag()) { | |
0 | 1000 case DataLayout::no_tag: |
1001 default: | |
1002 ShouldNotReachHere(); | |
1003 return NULL; | |
1004 case DataLayout::bit_data_tag: | |
941 | 1005 return new BitData(this); |
0 | 1006 case DataLayout::counter_data_tag: |
941 | 1007 return new CounterData(this); |
0 | 1008 case DataLayout::jump_data_tag: |
941 | 1009 return new JumpData(this); |
0 | 1010 case DataLayout::receiver_type_data_tag: |
941 | 1011 return new ReceiverTypeData(this); |
0 | 1012 case DataLayout::virtual_call_data_tag: |
941 | 1013 return new VirtualCallData(this); |
0 | 1014 case DataLayout::ret_data_tag: |
941 | 1015 return new RetData(this); |
0 | 1016 case DataLayout::branch_data_tag: |
941 | 1017 return new BranchData(this); |
0 | 1018 case DataLayout::multi_branch_data_tag: |
941 | 1019 return new MultiBranchData(this); |
45
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1020 case DataLayout::arg_info_data_tag: |
941 | 1021 return new ArgInfoData(this); |
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1022 case DataLayout::call_type_data_tag: |
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1023 return new CallTypeData(this); |
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1024 case DataLayout::virtual_call_type_data_tag: |
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1025 return new VirtualCallTypeData(this); |
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|
1026 case DataLayout::parameters_type_data_tag: |
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1027 return new ParametersTypeData(this); |
0 | 1028 }; |
1029 } | |
1030 | |
1031 // Iteration over data. | |
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1032 ProfileData* MethodData::next_data(ProfileData* current) const { |
0 | 1033 int current_index = dp_to_di(current->dp()); |
1034 int next_index = current_index + current->size_in_bytes(); | |
1035 ProfileData* next = data_at(next_index); | |
1036 return next; | |
1037 } | |
1038 | |
1039 // Give each of the data entries a chance to perform specific | |
1040 // data initialization. | |
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1041 void MethodData::post_initialize(BytecodeStream* stream) { |
0 | 1042 ResourceMark rm; |
1043 ProfileData* data; | |
1044 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
1045 stream->set_start(data->bci()); | |
1046 stream->next(); | |
1047 data->post_initialize(stream, this); | |
1048 } | |
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1049 if (_parameters_type_data_di != -1) { |
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1050 parameters_type_data()->post_initialize(NULL, this); |
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1051 } |
0 | 1052 } |
1053 | |
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1054 // Initialize the MethodData* corresponding to a given method. |
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1055 MethodData::MethodData(methodHandle method, int size, TRAPS) { |
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1056 // Set the method back-pointer. |
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1057 _method = method(); |
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1058 initialize(); |
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1059 } |
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|
1060 |
13181
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|
1061 void MethodData::initialize(bool for_reprofile) { |
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1062 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC |
0 | 1063 ResourceMark rm; |
1783 | 1064 |
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1065 init(); |
0 | 1066 set_creation_mileage(mileage_of(method())); |
1067 | |
1068 // Go through the bytecodes and allocate and initialize the | |
1069 // corresponding data cells. | |
1070 int data_size = 0; | |
1071 int empty_bc_count = 0; // number of bytecodes lacking data | |
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1072 _data[0] = 0; // apparently not set below. |
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1073 BytecodeStream stream(method()); |
0 | 1074 Bytecodes::Code c; |
1075 while ((c = stream.next()) >= 0) { | |
1076 int size_in_bytes = initialize_data(&stream, data_size); | |
1077 data_size += size_in_bytes; | |
13181
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|
1078 if (size_in_bytes == 0 GRAAL_ONLY(&& Bytecodes::can_trap(c))) empty_bc_count += 1; |
0 | 1079 } |
1080 _data_size = data_size; | |
1081 int object_size = in_bytes(data_offset()) + data_size; | |
1082 | |
1083 // Add some extra DataLayout cells (at least one) to track stray traps. | |
14909 | 1084 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); |
45
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1085 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); |
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|
1086 |
14909 | 1087 #ifdef GRAAL |
1088 if (for_reprofile) { | |
1089 // Clear out extra data | |
1090 Copy::zero_to_bytes((HeapWord*) extra_data_base(), extra_size); | |
1091 } | |
1092 #endif | |
14500
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diff
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|
1093 |
45
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|
1094 // Add a cell to record information about modified arguments. |
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|
1095 // Set up _args_modified array after traps cells so that |
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|
1096 // the code for traps cells works. |
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1097 DataLayout *dp = data_layout_at(data_size + extra_size); |
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1098 |
8615 | 1099 int arg_size = method()->size_of_parameters(); |
45
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1100 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); |
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|
1101 |
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1102 int arg_data_size = DataLayout::compute_size_in_bytes(arg_size+1); |
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1103 object_size += extra_size + arg_data_size; |
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1104 |
14909 | 1105 int args_cell = ParametersTypeData::compute_cell_count(method()); |
12962
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1106 // If we are profiling parameters, we reserver an area near the end |
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1107 // of the MDO after the slots for bytecodes (because there's no bci |
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1108 // for method entry so they don't fit with the framework for the |
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1109 // profiling of bytecodes). We store the offset within the MDO of |
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|
1110 // this area (or -1 if no parameter is profiled) |
14909 | 1111 if (args_cell > 0) { |
1112 object_size += DataLayout::compute_size_in_bytes(args_cell); | |
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|
1113 _parameters_type_data_di = data_size + extra_size + arg_data_size; |
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1114 DataLayout *dp = data_layout_at(data_size + extra_size + arg_data_size); |
14909 | 1115 dp->initialize(DataLayout::parameters_type_data_tag, 0, args_cell); |
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1116 } else { |
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1117 _parameters_type_data_di = -1; |
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|
1118 } |
0 | 1119 |
1120 // Set an initial hint. Don't use set_hint_di() because | |
1121 // first_di() may be out of bounds if data_size is 0. | |
1122 // In that situation, _hint_di is never used, but at | |
1123 // least well-defined. | |
1124 _hint_di = first_di(); | |
1125 | |
1126 post_initialize(&stream); | |
1127 | |
13181
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1128 assert(object_size == compute_allocation_size_in_bytes(methodHandle(_method)), "MethodData: computed size != initialized size"); |
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1129 set_size(object_size); |
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1130 } |
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1131 |
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1132 void MethodData::init() { |
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1133 _invocation_counter.init(); |
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1134 _backedge_counter.init(); |
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1135 _invocation_counter_start = 0; |
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1136 _backedge_counter_start = 0; |
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1137 _num_loops = 0; |
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1138 _num_blocks = 0; |
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1139 _highest_comp_level = 0; |
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1140 _highest_osr_comp_level = 0; |
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1141 _would_profile = true; |
14543
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|
1142 #ifdef GRAAL |
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|
1143 _graal_node_count = 0; |
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1144 #endif |
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1145 |
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1146 // Initialize flags and trap history. |
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1147 _nof_decompiles = 0; |
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1148 _nof_overflow_recompiles = 0; |
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1149 _nof_overflow_traps = 0; |
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1150 clear_escape_info(); |
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1151 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); |
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1152 Copy::zero_to_words((HeapWord*) &_trap_hist, |
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1153 sizeof(_trap_hist) / sizeof(HeapWord)); |
0 | 1154 } |
1155 | |
1156 // Get a measure of how much mileage the method has on it. | |
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1157 int MethodData::mileage_of(Method* method) { |
0 | 1158 int mileage = 0; |
1783 | 1159 if (TieredCompilation) { |
1160 mileage = MAX2(method->invocation_count(), method->backedge_count()); | |
1161 } else { | |
1162 int iic = method->interpreter_invocation_count(); | |
1163 if (mileage < iic) mileage = iic; | |
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1164 MethodCounters* mcs = method->method_counters(); |
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1165 if (mcs != NULL) { |
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1166 InvocationCounter* ic = mcs->invocation_counter(); |
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1167 InvocationCounter* bc = mcs->backedge_counter(); |
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1168 int icval = ic->count(); |
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1169 if (ic->carry()) icval += CompileThreshold; |
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1170 if (mileage < icval) mileage = icval; |
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1171 int bcval = bc->count(); |
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1172 if (bc->carry()) bcval += CompileThreshold; |
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1173 if (mileage < bcval) mileage = bcval; |
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1174 } |
1783 | 1175 } |
0 | 1176 return mileage; |
1177 } | |
1178 | |
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1179 bool MethodData::is_mature() const { |
1783 | 1180 return CompilationPolicy::policy()->is_mature(_method); |
0 | 1181 } |
1182 | |
1183 // Translate a bci to its corresponding data index (di). | |
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1184 address MethodData::bci_to_dp(int bci) { |
0 | 1185 ResourceMark rm; |
1186 ProfileData* data = data_before(bci); | |
1187 ProfileData* prev = NULL; | |
1188 for ( ; is_valid(data); data = next_data(data)) { | |
1189 if (data->bci() >= bci) { | |
1190 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); | |
1191 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); | |
1192 return data->dp(); | |
1193 } | |
1194 prev = data; | |
1195 } | |
1196 return (address)limit_data_position(); | |
1197 } | |
1198 | |
1199 // Translate a bci to its corresponding data, or NULL. | |
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1200 ProfileData* MethodData::bci_to_data(int bci) { |
0 | 1201 ProfileData* data = data_before(bci); |
1202 for ( ; is_valid(data); data = next_data(data)) { | |
1203 if (data->bci() == bci) { | |
1204 set_hint_di(dp_to_di(data->dp())); | |
1205 return data; | |
1206 } else if (data->bci() > bci) { | |
1207 break; | |
1208 } | |
1209 } | |
14909 | 1210 return bci_to_extra_data(bci, false); |
0 | 1211 } |
1212 | |
14909 | 1213 // Translate a bci to its corresponding extra data, or NULL. |
1214 ProfileData* MethodData::bci_to_extra_data(int bci, bool create_if_missing) { | |
1215 DataLayout* dp = extra_data_base(); | |
1216 DataLayout* end = extra_data_limit(); | |
1217 DataLayout* avail = NULL; | |
1218 for (; dp < end; dp = next_extra(dp)) { | |
0 | 1219 // No need for "OrderAccess::load_acquire" ops, |
1220 // since the data structure is monotonic. | |
14909 | 1221 if (dp->tag() == DataLayout::no_tag) break; |
1222 if (dp->tag() == DataLayout::arg_info_data_tag) { | |
1223 dp = end; // ArgInfoData is at the end of extra data section. | |
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1224 break; |
14909 | 1225 } |
1226 if (dp->bci() == bci) { | |
1227 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
1228 return new BitData(dp); | |
0 | 1229 } |
1230 } | |
14909 | 1231 if (create_if_missing && dp < end) { |
1232 // Allocate this one. There is no mutual exclusion, | |
1233 // so two threads could allocate different BCIs to the | |
1234 // same data layout. This means these extra data | |
1235 // records, like most other MDO contents, must not be | |
1236 // trusted too much. | |
1237 DataLayout temp; | |
1238 temp.initialize(DataLayout::bit_data_tag, bci, 0); | |
1239 dp->release_set_header(temp.header()); | |
1240 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
1241 //NO: assert(dp->bci() == bci, "no concurrent allocation"); | |
1242 return new BitData(dp); | |
0 | 1243 } |
1244 return NULL; | |
1245 } | |
1246 | |
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1247 ArgInfoData *MethodData::arg_info() { |
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1248 DataLayout* dp = extra_data_base(); |
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1249 DataLayout* end = extra_data_limit(); |
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1250 for (; dp < end; dp = next_extra(dp)) { |
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1251 if (dp->tag() == DataLayout::arg_info_data_tag) |
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1252 return new ArgInfoData(dp); |
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1253 } |
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1254 return NULL; |
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1255 } |
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1256 |
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1257 // Printing |
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1258 |
0 | 1259 #ifndef PRODUCT |
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1260 |
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1261 void MethodData::print_on(outputStream* st) const { |
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1262 assert(is_methodData(), "should be method data"); |
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1263 st->print("method data for "); |
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1264 method()->print_value_on(st); |
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1265 st->cr(); |
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1266 print_data_on(st); |
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1267 } |
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1268 |
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1269 #endif //PRODUCT |
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1270 |
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1271 void MethodData::print_value_on(outputStream* st) const { |
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1272 assert(is_methodData(), "should be method data"); |
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1273 st->print("method data for "); |
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1274 method()->print_value_on(st); |
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1275 } |
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1276 |
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1277 #ifndef PRODUCT |
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1278 void MethodData::print_data_on(outputStream* st) const { |
0 | 1279 ResourceMark rm; |
1280 ProfileData* data = first_data(); | |
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1281 if (_parameters_type_data_di != -1) { |
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1282 parameters_type_data()->print_data_on(st); |
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1283 } |
0 | 1284 for ( ; is_valid(data); data = next_data(data)) { |
1285 st->print("%d", dp_to_di(data->dp())); | |
1286 st->fill_to(6); | |
14909 | 1287 data->print_data_on(st); |
0 | 1288 } |
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1289 st->print_cr("--- Extra data:"); |
0 | 1290 DataLayout* dp = extra_data_base(); |
1291 DataLayout* end = extra_data_limit(); | |
14909 | 1292 for (; dp < end; dp = next_extra(dp)) { |
0 | 1293 // No need for "OrderAccess::load_acquire" ops, |
1294 // since the data structure is monotonic. | |
14909 | 1295 if (dp->tag() == DataLayout::no_tag) continue; |
1296 if (dp->tag() == DataLayout::bit_data_tag) { | |
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1297 data = new BitData(dp); |
14909 | 1298 } else { |
1299 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); | |
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1300 data = new ArgInfoData(dp); |
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1301 dp = end; // ArgInfoData is at the end of extra data section. |
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1302 } |
0 | 1303 st->print("%d", dp_to_di(data->dp())); |
1304 st->fill_to(6); | |
1305 data->print_data_on(st); | |
1306 } | |
1307 } | |
1308 #endif | |
1309 | |
7956 | 1310 #if INCLUDE_SERVICES |
1311 // Size Statistics | |
1312 void MethodData::collect_statistics(KlassSizeStats *sz) const { | |
1313 int n = sz->count(this); | |
1314 sz->_method_data_bytes += n; | |
1315 sz->_method_all_bytes += n; | |
1316 sz->_rw_bytes += n; | |
1317 } | |
1318 #endif // INCLUDE_SERVICES | |
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1319 |
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1320 // Verification |
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1321 |
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1322 void MethodData::verify_on(outputStream* st) { |
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1323 guarantee(is_methodData(), "object must be method data"); |
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1324 // guarantee(m->is_perm(), "should be in permspace"); |
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1325 this->verify_data_on(st); |
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1326 } |
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1327 |
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1328 void MethodData::verify_data_on(outputStream* st) { |
0 | 1329 NEEDS_CLEANUP; |
1330 // not yet implemented. | |
1331 } | |
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1332 |
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1333 bool MethodData::profile_jsr292(methodHandle m, int bci) { |
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1334 if (m->is_compiled_lambda_form()) { |
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1335 return true; |
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1336 } |
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1337 |
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1338 Bytecode_invoke inv(m , bci); |
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1339 return inv.is_invokedynamic() || inv.is_invokehandle(); |
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1340 } |
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1341 |
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1342 int MethodData::profile_arguments_flag() { |
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1343 return TypeProfileLevel % 10; |
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1344 } |
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1345 |
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1346 bool MethodData::profile_arguments() { |
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1347 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; |
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1348 } |
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1349 |
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1350 bool MethodData::profile_arguments_jsr292_only() { |
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1351 return profile_arguments_flag() == type_profile_jsr292; |
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1352 } |
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1353 |
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1354 bool MethodData::profile_all_arguments() { |
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1355 return profile_arguments_flag() == type_profile_all; |
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1356 } |
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1357 |
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1358 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { |
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1359 if (!profile_arguments()) { |
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1360 return false; |
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|
1361 } |
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|
1362 |
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1363 if (profile_all_arguments()) { |
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|
1364 return true; |
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|
1365 } |
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|
1366 |
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1367 assert(profile_arguments_jsr292_only(), "inconsistent"); |
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1368 return profile_jsr292(m, bci); |
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|
1369 } |
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|
1370 |
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1371 int MethodData::profile_return_flag() { |
12962
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1372 return (TypeProfileLevel % 100) / 10; |
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1373 } |
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|
1374 |
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1375 bool MethodData::profile_return() { |
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1376 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; |
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1377 } |
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|
1378 |
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1379 bool MethodData::profile_return_jsr292_only() { |
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1380 return profile_return_flag() == type_profile_jsr292; |
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1381 } |
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|
1382 |
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1383 bool MethodData::profile_all_return() { |
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1384 return profile_return_flag() == type_profile_all; |
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|
1385 } |
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|
1386 |
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1387 bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { |
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1388 if (!profile_return()) { |
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|
1389 return false; |
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|
1390 } |
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|
1391 |
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|
1392 if (profile_all_return()) { |
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|
1393 return true; |
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|
1394 } |
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|
1395 |
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|
1396 assert(profile_return_jsr292_only(), "inconsistent"); |
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1397 return profile_jsr292(m, bci); |
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|
1398 } |
12962
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|
1399 |
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|
1400 int MethodData::profile_parameters_flag() { |
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|
1401 return TypeProfileLevel / 100; |
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|
1402 } |
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|
1403 |
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|
1404 bool MethodData::profile_parameters() { |
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|
1405 return profile_parameters_flag() > no_type_profile && profile_parameters_flag() <= type_profile_all; |
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|
1406 } |
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|
1407 |
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|
1408 bool MethodData::profile_parameters_jsr292_only() { |
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|
1409 return profile_parameters_flag() == type_profile_jsr292; |
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|
1410 } |
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|
1411 |
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|
1412 bool MethodData::profile_all_parameters() { |
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|
1413 return profile_parameters_flag() == type_profile_all; |
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|
1414 } |
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|
1415 |
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|
1416 bool MethodData::profile_parameters_for_method(methodHandle m) { |
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|
1417 if (!profile_parameters()) { |
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|
1418 return false; |
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|
1419 } |
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|
1420 |
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|
1421 if (profile_all_parameters()) { |
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|
1422 return true; |
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|
1423 } |
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|
1424 |
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|
1425 assert(profile_parameters_jsr292_only(), "inconsistent"); |
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|
1426 return m->is_compiled_lambda_form(); |
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|
1427 } |
14500
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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14435
diff
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|
1428 |
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Tom Rodriguez <tom.rodriguez@oracle.com>
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|
1429 void MethodData::clean_weak_method_links() { |
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14543
diff
changeset
|
1430 for (ProfileData* data = first_data(); |
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diff
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|
1431 is_valid(data); |
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Tom Rodriguez <tom.rodriguez@oracle.com>
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diff
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|
1432 data = next_data(data)) { |
8762b6b8fbb6
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14543
diff
changeset
|
1433 data->clean_weak_method_links(); |
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Tom Rodriguez <tom.rodriguez@oracle.com>
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14543
diff
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|
1434 } |
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|
1435 } |