Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.cpp @ 13080:6e1826d5c23e
8027572: assert(r != 0) failed: invalid
Summary: null classes should be expected in profiles with conflicts
Reviewed-by: kvn, iveresov
author | roland |
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date | Wed, 13 Nov 2013 13:45:50 +0100 |
parents | 5ccbab1c69f3 |
children | 096c224171c4 da862781b584 b8413a9cbb84 |
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 | |
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84 void ProfileData::print_shared(outputStream* st, const char* name) const { |
0 | 85 st->print("bci: %d", bci()); |
86 st->fill_to(tab_width_one); | |
87 st->print("%s", name); | |
88 tab(st); | |
89 int trap = trap_state(); | |
90 if (trap != 0) { | |
91 char buf[100]; | |
92 st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); | |
93 } | |
94 int flags = data()->flags(); | |
95 if (flags != 0) | |
96 st->print("flags(%d) ", flags); | |
97 } | |
98 | |
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99 void ProfileData::tab(outputStream* st, bool first) const { |
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100 st->fill_to(first ? tab_width_one : tab_width_two); |
0 | 101 } |
102 #endif // !PRODUCT | |
103 | |
104 // ================================================================== | |
105 // BitData | |
106 // | |
107 // A BitData corresponds to a one-bit flag. This is used to indicate | |
108 // whether a checkcast bytecode has seen a null value. | |
109 | |
110 | |
111 #ifndef PRODUCT | |
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112 void BitData::print_data_on(outputStream* st) const { |
0 | 113 print_shared(st, "BitData"); |
114 } | |
115 #endif // !PRODUCT | |
116 | |
117 // ================================================================== | |
118 // CounterData | |
119 // | |
120 // A CounterData corresponds to a simple counter. | |
121 | |
122 #ifndef PRODUCT | |
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123 void CounterData::print_data_on(outputStream* st) const { |
0 | 124 print_shared(st, "CounterData"); |
125 st->print_cr("count(%u)", count()); | |
126 } | |
127 #endif // !PRODUCT | |
128 | |
129 // ================================================================== | |
130 // JumpData | |
131 // | |
132 // A JumpData is used to access profiling information for a direct | |
133 // branch. It is a counter, used for counting the number of branches, | |
134 // plus a data displacement, used for realigning the data pointer to | |
135 // the corresponding target bci. | |
136 | |
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137 void JumpData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 138 assert(stream->bci() == bci(), "wrong pos"); |
139 int target; | |
140 Bytecodes::Code c = stream->code(); | |
141 if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) { | |
142 target = stream->dest_w(); | |
143 } else { | |
144 target = stream->dest(); | |
145 } | |
146 int my_di = mdo->dp_to_di(dp()); | |
147 int target_di = mdo->bci_to_di(target); | |
148 int offset = target_di - my_di; | |
149 set_displacement(offset); | |
150 } | |
151 | |
152 #ifndef PRODUCT | |
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153 void JumpData::print_data_on(outputStream* st) const { |
0 | 154 print_shared(st, "JumpData"); |
155 st->print_cr("taken(%u) displacement(%d)", taken(), displacement()); | |
156 } | |
157 #endif // !PRODUCT | |
158 | |
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159 int TypeStackSlotEntries::compute_cell_count(Symbol* signature, 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 |
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335 void CallTypeData::print_data_on(outputStream* st) const { |
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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 |
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349 void VirtualCallTypeData::print_data_on(outputStream* st) const { |
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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 | |
0 | 381 #ifndef PRODUCT |
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382 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const { |
0 | 383 uint row; |
384 int entries = 0; | |
385 for (row = 0; row < row_limit(); row++) { | |
386 if (receiver(row) != NULL) entries++; | |
387 } | |
388 st->print_cr("count(%u) entries(%u)", count(), entries); | |
1783 | 389 int total = count(); |
390 for (row = 0; row < row_limit(); row++) { | |
391 if (receiver(row) != NULL) { | |
392 total += receiver_count(row); | |
393 } | |
394 } | |
0 | 395 for (row = 0; row < row_limit(); row++) { |
396 if (receiver(row) != NULL) { | |
397 tab(st); | |
398 receiver(row)->print_value_on(st); | |
1783 | 399 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total); |
0 | 400 } |
401 } | |
402 } | |
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403 void ReceiverTypeData::print_data_on(outputStream* st) const { |
0 | 404 print_shared(st, "ReceiverTypeData"); |
405 print_receiver_data_on(st); | |
406 } | |
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407 void VirtualCallData::print_data_on(outputStream* st) const { |
0 | 408 print_shared(st, "VirtualCallData"); |
409 print_receiver_data_on(st); | |
410 } | |
411 #endif // !PRODUCT | |
412 | |
413 // ================================================================== | |
414 // RetData | |
415 // | |
416 // A RetData is used to access profiling information for a ret bytecode. | |
417 // It is composed of a count of the number of times that the ret has | |
418 // been executed, followed by a series of triples of the form | |
419 // (bci, count, di) which count the number of times that some bci was the | |
420 // target of the ret and cache a corresponding displacement. | |
421 | |
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422 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 423 for (uint row = 0; row < row_limit(); row++) { |
424 set_bci_displacement(row, -1); | |
425 set_bci(row, no_bci); | |
426 } | |
427 // release so other threads see a consistent state. bci is used as | |
428 // a valid flag for bci_displacement. | |
429 OrderAccess::release(); | |
430 } | |
431 | |
432 // This routine needs to atomically update the RetData structure, so the | |
433 // caller needs to hold the RetData_lock before it gets here. Since taking | |
434 // the lock can block (and allow GC) and since RetData is a ProfileData is a | |
435 // wrapper around a derived oop, taking the lock in _this_ method will | |
436 // basically cause the 'this' pointer's _data field to contain junk after the | |
437 // lock. We require the caller to take the lock before making the ProfileData | |
438 // structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret | |
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439 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) { |
0 | 440 // First find the mdp which corresponds to the return bci. |
441 address mdp = h_mdo->bci_to_dp(return_bci); | |
442 | |
443 // Now check to see if any of the cache slots are open. | |
444 for (uint row = 0; row < row_limit(); row++) { | |
445 if (bci(row) == no_bci) { | |
446 set_bci_displacement(row, mdp - dp()); | |
447 set_bci_count(row, DataLayout::counter_increment); | |
448 // Barrier to ensure displacement is written before the bci; allows | |
449 // the interpreter to read displacement without fear of race condition. | |
450 release_set_bci(row, return_bci); | |
451 break; | |
452 } | |
453 } | |
454 return mdp; | |
455 } | |
456 | |
457 | |
458 #ifndef PRODUCT | |
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459 void RetData::print_data_on(outputStream* st) const { |
0 | 460 print_shared(st, "RetData"); |
461 uint row; | |
462 int entries = 0; | |
463 for (row = 0; row < row_limit(); row++) { | |
464 if (bci(row) != no_bci) entries++; | |
465 } | |
466 st->print_cr("count(%u) entries(%u)", count(), entries); | |
467 for (row = 0; row < row_limit(); row++) { | |
468 if (bci(row) != no_bci) { | |
469 tab(st); | |
470 st->print_cr("bci(%d: count(%u) displacement(%d))", | |
471 bci(row), bci_count(row), bci_displacement(row)); | |
472 } | |
473 } | |
474 } | |
475 #endif // !PRODUCT | |
476 | |
477 // ================================================================== | |
478 // BranchData | |
479 // | |
480 // A BranchData is used to access profiling data for a two-way branch. | |
481 // It consists of taken and not_taken counts as well as a data displacement | |
482 // for the taken case. | |
483 | |
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484 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 485 assert(stream->bci() == bci(), "wrong pos"); |
486 int target = stream->dest(); | |
487 int my_di = mdo->dp_to_di(dp()); | |
488 int target_di = mdo->bci_to_di(target); | |
489 int offset = target_di - my_di; | |
490 set_displacement(offset); | |
491 } | |
492 | |
493 #ifndef PRODUCT | |
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494 void BranchData::print_data_on(outputStream* st) const { |
0 | 495 print_shared(st, "BranchData"); |
496 st->print_cr("taken(%u) displacement(%d)", | |
497 taken(), displacement()); | |
498 tab(st); | |
499 st->print_cr("not taken(%u)", not_taken()); | |
500 } | |
501 #endif | |
502 | |
503 // ================================================================== | |
504 // MultiBranchData | |
505 // | |
506 // A MultiBranchData is used to access profiling information for | |
507 // a multi-way branch (*switch bytecodes). It consists of a series | |
508 // of (count, displacement) pairs, which count the number of times each | |
509 // case was taken and specify the data displacment for each branch target. | |
510 | |
511 int MultiBranchData::compute_cell_count(BytecodeStream* stream) { | |
512 int cell_count = 0; | |
513 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 514 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
515 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default | |
0 | 516 } else { |
2142 | 517 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
518 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default | |
0 | 519 } |
520 return cell_count; | |
521 } | |
522 | |
523 void MultiBranchData::post_initialize(BytecodeStream* stream, | |
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524 MethodData* mdo) { |
0 | 525 assert(stream->bci() == bci(), "wrong pos"); |
526 int target; | |
527 int my_di; | |
528 int target_di; | |
529 int offset; | |
530 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 531 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
532 int len = sw.length(); | |
0 | 533 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); |
534 for (int count = 0; count < len; count++) { | |
2142 | 535 target = sw.dest_offset_at(count) + bci(); |
0 | 536 my_di = mdo->dp_to_di(dp()); |
537 target_di = mdo->bci_to_di(target); | |
538 offset = target_di - my_di; | |
539 set_displacement_at(count, offset); | |
540 } | |
2142 | 541 target = sw.default_offset() + bci(); |
0 | 542 my_di = mdo->dp_to_di(dp()); |
543 target_di = mdo->bci_to_di(target); | |
544 offset = target_di - my_di; | |
545 set_default_displacement(offset); | |
546 | |
547 } else { | |
2142 | 548 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
549 int npairs = sw.number_of_pairs(); | |
0 | 550 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); |
551 for (int count = 0; count < npairs; count++) { | |
2142 | 552 LookupswitchPair pair = sw.pair_at(count); |
553 target = pair.offset() + bci(); | |
0 | 554 my_di = mdo->dp_to_di(dp()); |
555 target_di = mdo->bci_to_di(target); | |
556 offset = target_di - my_di; | |
557 set_displacement_at(count, offset); | |
558 } | |
2142 | 559 target = sw.default_offset() + bci(); |
0 | 560 my_di = mdo->dp_to_di(dp()); |
561 target_di = mdo->bci_to_di(target); | |
562 offset = target_di - my_di; | |
563 set_default_displacement(offset); | |
564 } | |
565 } | |
566 | |
567 #ifndef PRODUCT | |
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568 void MultiBranchData::print_data_on(outputStream* st) const { |
0 | 569 print_shared(st, "MultiBranchData"); |
570 st->print_cr("default_count(%u) displacement(%d)", | |
571 default_count(), default_displacement()); | |
572 int cases = number_of_cases(); | |
573 for (int i = 0; i < cases; i++) { | |
574 tab(st); | |
575 st->print_cr("count(%u) displacement(%d)", | |
576 count_at(i), displacement_at(i)); | |
577 } | |
578 } | |
579 #endif | |
580 | |
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581 #ifndef PRODUCT |
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582 void ArgInfoData::print_data_on(outputStream* st) const { |
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583 print_shared(st, "ArgInfoData"); |
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584 int nargs = number_of_args(); |
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585 for (int i = 0; i < nargs; i++) { |
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586 st->print(" 0x%x", arg_modified(i)); |
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587 } |
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588 st->cr(); |
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589 } |
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590 |
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591 #endif |
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592 |
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593 int ParametersTypeData::compute_cell_count(Method* m) { |
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594 if (!MethodData::profile_parameters_for_method(m)) { |
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595 return 0; |
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596 } |
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597 int max = TypeProfileParmsLimit == -1 ? INT_MAX : TypeProfileParmsLimit; |
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598 int obj_args = TypeStackSlotEntries::compute_cell_count(m->signature(), !m->is_static(), max); |
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599 if (obj_args > 0) { |
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600 return obj_args + 1; // 1 cell for array len |
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601 } |
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602 return 0; |
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603 } |
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604 |
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605 void ParametersTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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606 _parameters.post_initialize(mdo->method()->signature(), !mdo->method()->is_static(), true); |
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607 } |
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608 |
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609 bool ParametersTypeData::profiling_enabled() { |
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610 return MethodData::profile_parameters(); |
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611 } |
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612 |
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613 #ifndef PRODUCT |
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614 void ParametersTypeData::print_data_on(outputStream* st) const { |
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615 st->print("parameter types"); |
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616 _parameters.print_data_on(st); |
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617 } |
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618 #endif |
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619 |
0 | 620 // ================================================================== |
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621 // MethodData* |
0 | 622 // |
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623 // A MethodData* holds information which has been collected about |
0 | 624 // a method. |
625 | |
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626 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { |
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627 int size = MethodData::compute_allocation_size_in_words(method); |
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628 |
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629 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) |
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630 MethodData(method(), size, CHECK_NULL); |
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631 } |
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632 |
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633 int MethodData::bytecode_cell_count(Bytecodes::Code code) { |
8860 | 634 #if defined(COMPILER1) && !defined(COMPILER2) |
635 return no_profile_data; | |
636 #else | |
0 | 637 switch (code) { |
638 case Bytecodes::_checkcast: | |
639 case Bytecodes::_instanceof: | |
640 case Bytecodes::_aastore: | |
641 if (TypeProfileCasts) { | |
642 return ReceiverTypeData::static_cell_count(); | |
643 } else { | |
644 return BitData::static_cell_count(); | |
645 } | |
646 case Bytecodes::_invokespecial: | |
647 case Bytecodes::_invokestatic: | |
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648 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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649 return variable_cell_count; |
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650 } else { |
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651 return CounterData::static_cell_count(); |
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652 } |
0 | 653 case Bytecodes::_goto: |
654 case Bytecodes::_goto_w: | |
655 case Bytecodes::_jsr: | |
656 case Bytecodes::_jsr_w: | |
657 return JumpData::static_cell_count(); | |
658 case Bytecodes::_invokevirtual: | |
659 case Bytecodes::_invokeinterface: | |
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660 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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661 return variable_cell_count; |
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662 } else { |
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663 return VirtualCallData::static_cell_count(); |
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664 } |
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665 case Bytecodes::_invokedynamic: |
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666 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
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667 return variable_cell_count; |
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668 } else { |
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669 return CounterData::static_cell_count(); |
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670 } |
0 | 671 case Bytecodes::_ret: |
672 return RetData::static_cell_count(); | |
673 case Bytecodes::_ifeq: | |
674 case Bytecodes::_ifne: | |
675 case Bytecodes::_iflt: | |
676 case Bytecodes::_ifge: | |
677 case Bytecodes::_ifgt: | |
678 case Bytecodes::_ifle: | |
679 case Bytecodes::_if_icmpeq: | |
680 case Bytecodes::_if_icmpne: | |
681 case Bytecodes::_if_icmplt: | |
682 case Bytecodes::_if_icmpge: | |
683 case Bytecodes::_if_icmpgt: | |
684 case Bytecodes::_if_icmple: | |
685 case Bytecodes::_if_acmpeq: | |
686 case Bytecodes::_if_acmpne: | |
687 case Bytecodes::_ifnull: | |
688 case Bytecodes::_ifnonnull: | |
689 return BranchData::static_cell_count(); | |
690 case Bytecodes::_lookupswitch: | |
691 case Bytecodes::_tableswitch: | |
692 return variable_cell_count; | |
693 } | |
694 return no_profile_data; | |
8860 | 695 #endif |
0 | 696 } |
697 | |
698 // Compute the size of the profiling information corresponding to | |
699 // the current bytecode. | |
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700 int MethodData::compute_data_size(BytecodeStream* stream) { |
0 | 701 int cell_count = bytecode_cell_count(stream->code()); |
702 if (cell_count == no_profile_data) { | |
703 return 0; | |
704 } | |
705 if (cell_count == variable_cell_count) { | |
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706 switch (stream->code()) { |
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707 case Bytecodes::_lookupswitch: |
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708 case Bytecodes::_tableswitch: |
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709 cell_count = MultiBranchData::compute_cell_count(stream); |
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710 break; |
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711 case Bytecodes::_invokespecial: |
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712 case Bytecodes::_invokestatic: |
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713 case Bytecodes::_invokedynamic: |
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714 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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715 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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716 profile_return_for_invoke(stream->method(), stream->bci())) { |
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717 cell_count = CallTypeData::compute_cell_count(stream); |
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718 } else { |
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719 cell_count = CounterData::static_cell_count(); |
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720 } |
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721 break; |
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722 case Bytecodes::_invokevirtual: |
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723 case Bytecodes::_invokeinterface: { |
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724 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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725 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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726 profile_return_for_invoke(stream->method(), stream->bci())) { |
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727 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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728 } else { |
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729 cell_count = VirtualCallData::static_cell_count(); |
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730 } |
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731 break; |
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732 } |
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733 default: |
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734 fatal("unexpected bytecode for var length profile data"); |
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735 } |
0 | 736 } |
737 // Note: cell_count might be zero, meaning that there is just | |
738 // a DataLayout header, with no extra cells. | |
739 assert(cell_count >= 0, "sanity"); | |
740 return DataLayout::compute_size_in_bytes(cell_count); | |
741 } | |
742 | |
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743 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) { |
0 | 744 if (ProfileTraps) { |
745 // Assume that up to 3% of BCIs with no MDP will need to allocate one. | |
746 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; | |
747 // If the method is large, let the extra BCIs grow numerous (to ~1%). | |
748 int one_percent_of_data | |
749 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); | |
750 if (extra_data_count < one_percent_of_data) | |
751 extra_data_count = one_percent_of_data; | |
752 if (extra_data_count > empty_bc_count) | |
753 extra_data_count = empty_bc_count; // no need for more | |
754 return extra_data_count; | |
755 } else { | |
756 return 0; | |
757 } | |
758 } | |
759 | |
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760 // Compute the size of the MethodData* necessary to store |
0 | 761 // profiling information about a given method. Size is in bytes. |
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762 int MethodData::compute_allocation_size_in_bytes(methodHandle method) { |
0 | 763 int data_size = 0; |
764 BytecodeStream stream(method); | |
765 Bytecodes::Code c; | |
766 int empty_bc_count = 0; // number of bytecodes lacking data | |
767 while ((c = stream.next()) >= 0) { | |
768 int size_in_bytes = compute_data_size(&stream); | |
769 data_size += size_in_bytes; | |
770 if (size_in_bytes == 0) empty_bc_count += 1; | |
771 } | |
772 int object_size = in_bytes(data_offset()) + data_size; | |
773 | |
774 // Add some extra DataLayout cells (at least one) to track stray traps. | |
775 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); | |
776 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); | |
777 | |
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778 // Add a cell to record information about modified arguments. |
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779 int arg_size = method->size_of_parameters(); |
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780 object_size += DataLayout::compute_size_in_bytes(arg_size+1); |
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781 |
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782 // Reserve room for an area of the MDO dedicated to profiling of |
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783 // parameters |
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784 int args_cell = ParametersTypeData::compute_cell_count(method()); |
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785 if (args_cell > 0) { |
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786 object_size += DataLayout::compute_size_in_bytes(args_cell); |
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787 } |
0 | 788 return object_size; |
789 } | |
790 | |
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791 // Compute the size of the MethodData* necessary to store |
0 | 792 // profiling information about a given method. Size is in words |
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793 int MethodData::compute_allocation_size_in_words(methodHandle method) { |
0 | 794 int byte_size = compute_allocation_size_in_bytes(method); |
795 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; | |
796 return align_object_size(word_size); | |
797 } | |
798 | |
799 // Initialize an individual data segment. Returns the size of | |
800 // the segment in bytes. | |
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801 int MethodData::initialize_data(BytecodeStream* stream, |
0 | 802 int data_index) { |
8860 | 803 #if defined(COMPILER1) && !defined(COMPILER2) |
804 return 0; | |
805 #else | |
0 | 806 int cell_count = -1; |
807 int tag = DataLayout::no_tag; | |
808 DataLayout* data_layout = data_layout_at(data_index); | |
809 Bytecodes::Code c = stream->code(); | |
810 switch (c) { | |
811 case Bytecodes::_checkcast: | |
812 case Bytecodes::_instanceof: | |
813 case Bytecodes::_aastore: | |
814 if (TypeProfileCasts) { | |
815 cell_count = ReceiverTypeData::static_cell_count(); | |
816 tag = DataLayout::receiver_type_data_tag; | |
817 } else { | |
818 cell_count = BitData::static_cell_count(); | |
819 tag = DataLayout::bit_data_tag; | |
820 } | |
821 break; | |
822 case Bytecodes::_invokespecial: | |
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823 case Bytecodes::_invokestatic: { |
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824 int counter_data_cell_count = CounterData::static_cell_count(); |
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825 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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826 profile_return_for_invoke(stream->method(), stream->bci())) { |
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827 cell_count = CallTypeData::compute_cell_count(stream); |
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828 } else { |
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829 cell_count = counter_data_cell_count; |
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830 } |
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831 if (cell_count > counter_data_cell_count) { |
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832 tag = DataLayout::call_type_data_tag; |
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833 } else { |
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834 tag = DataLayout::counter_data_tag; |
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835 } |
0 | 836 break; |
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837 } |
0 | 838 case Bytecodes::_goto: |
839 case Bytecodes::_goto_w: | |
840 case Bytecodes::_jsr: | |
841 case Bytecodes::_jsr_w: | |
842 cell_count = JumpData::static_cell_count(); | |
843 tag = DataLayout::jump_data_tag; | |
844 break; | |
845 case Bytecodes::_invokevirtual: | |
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846 case Bytecodes::_invokeinterface: { |
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847 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); |
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848 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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849 profile_return_for_invoke(stream->method(), stream->bci())) { |
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850 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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851 } else { |
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852 cell_count = virtual_call_data_cell_count; |
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|
853 } |
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|
854 if (cell_count > virtual_call_data_cell_count) { |
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855 tag = DataLayout::virtual_call_type_data_tag; |
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|
856 } else { |
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857 tag = DataLayout::virtual_call_data_tag; |
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|
858 } |
0 | 859 break; |
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|
860 } |
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|
861 case Bytecodes::_invokedynamic: { |
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862 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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863 int counter_data_cell_count = CounterData::static_cell_count(); |
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864 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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865 profile_return_for_invoke(stream->method(), stream->bci())) { |
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866 cell_count = CallTypeData::compute_cell_count(stream); |
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|
867 } else { |
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|
868 cell_count = counter_data_cell_count; |
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|
869 } |
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|
870 if (cell_count > counter_data_cell_count) { |
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871 tag = DataLayout::call_type_data_tag; |
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872 } else { |
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873 tag = DataLayout::counter_data_tag; |
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874 } |
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875 break; |
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876 } |
0 | 877 case Bytecodes::_ret: |
878 cell_count = RetData::static_cell_count(); | |
879 tag = DataLayout::ret_data_tag; | |
880 break; | |
881 case Bytecodes::_ifeq: | |
882 case Bytecodes::_ifne: | |
883 case Bytecodes::_iflt: | |
884 case Bytecodes::_ifge: | |
885 case Bytecodes::_ifgt: | |
886 case Bytecodes::_ifle: | |
887 case Bytecodes::_if_icmpeq: | |
888 case Bytecodes::_if_icmpne: | |
889 case Bytecodes::_if_icmplt: | |
890 case Bytecodes::_if_icmpge: | |
891 case Bytecodes::_if_icmpgt: | |
892 case Bytecodes::_if_icmple: | |
893 case Bytecodes::_if_acmpeq: | |
894 case Bytecodes::_if_acmpne: | |
895 case Bytecodes::_ifnull: | |
896 case Bytecodes::_ifnonnull: | |
897 cell_count = BranchData::static_cell_count(); | |
898 tag = DataLayout::branch_data_tag; | |
899 break; | |
900 case Bytecodes::_lookupswitch: | |
901 case Bytecodes::_tableswitch: | |
902 cell_count = MultiBranchData::compute_cell_count(stream); | |
903 tag = DataLayout::multi_branch_data_tag; | |
904 break; | |
905 } | |
906 assert(tag == DataLayout::multi_branch_data_tag || | |
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907 ((MethodData::profile_arguments() || MethodData::profile_return()) && |
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908 (tag == DataLayout::call_type_data_tag || |
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909 tag == DataLayout::counter_data_tag || |
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910 tag == DataLayout::virtual_call_type_data_tag || |
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911 tag == DataLayout::virtual_call_data_tag)) || |
0 | 912 cell_count == bytecode_cell_count(c), "cell counts must agree"); |
913 if (cell_count >= 0) { | |
914 assert(tag != DataLayout::no_tag, "bad tag"); | |
915 assert(bytecode_has_profile(c), "agree w/ BHP"); | |
916 data_layout->initialize(tag, stream->bci(), cell_count); | |
917 return DataLayout::compute_size_in_bytes(cell_count); | |
918 } else { | |
919 assert(!bytecode_has_profile(c), "agree w/ !BHP"); | |
920 return 0; | |
921 } | |
8860 | 922 #endif |
0 | 923 } |
924 | |
925 // Get the data at an arbitrary (sort of) data index. | |
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926 ProfileData* MethodData::data_at(int data_index) const { |
0 | 927 if (out_of_bounds(data_index)) { |
928 return NULL; | |
929 } | |
930 DataLayout* data_layout = data_layout_at(data_index); | |
941 | 931 return data_layout->data_in(); |
932 } | |
0 | 933 |
941 | 934 ProfileData* DataLayout::data_in() { |
935 switch (tag()) { | |
0 | 936 case DataLayout::no_tag: |
937 default: | |
938 ShouldNotReachHere(); | |
939 return NULL; | |
940 case DataLayout::bit_data_tag: | |
941 | 941 return new BitData(this); |
0 | 942 case DataLayout::counter_data_tag: |
941 | 943 return new CounterData(this); |
0 | 944 case DataLayout::jump_data_tag: |
941 | 945 return new JumpData(this); |
0 | 946 case DataLayout::receiver_type_data_tag: |
941 | 947 return new ReceiverTypeData(this); |
0 | 948 case DataLayout::virtual_call_data_tag: |
941 | 949 return new VirtualCallData(this); |
0 | 950 case DataLayout::ret_data_tag: |
941 | 951 return new RetData(this); |
0 | 952 case DataLayout::branch_data_tag: |
941 | 953 return new BranchData(this); |
0 | 954 case DataLayout::multi_branch_data_tag: |
941 | 955 return new MultiBranchData(this); |
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956 case DataLayout::arg_info_data_tag: |
941 | 957 return new ArgInfoData(this); |
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958 case DataLayout::call_type_data_tag: |
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959 return new CallTypeData(this); |
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960 case DataLayout::virtual_call_type_data_tag: |
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961 return new VirtualCallTypeData(this); |
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962 case DataLayout::parameters_type_data_tag: |
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963 return new ParametersTypeData(this); |
0 | 964 }; |
965 } | |
966 | |
967 // Iteration over data. | |
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968 ProfileData* MethodData::next_data(ProfileData* current) const { |
0 | 969 int current_index = dp_to_di(current->dp()); |
970 int next_index = current_index + current->size_in_bytes(); | |
971 ProfileData* next = data_at(next_index); | |
972 return next; | |
973 } | |
974 | |
975 // Give each of the data entries a chance to perform specific | |
976 // data initialization. | |
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977 void MethodData::post_initialize(BytecodeStream* stream) { |
0 | 978 ResourceMark rm; |
979 ProfileData* data; | |
980 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
981 stream->set_start(data->bci()); | |
982 stream->next(); | |
983 data->post_initialize(stream, this); | |
984 } | |
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985 if (_parameters_type_data_di != -1) { |
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986 parameters_type_data()->post_initialize(NULL, this); |
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987 } |
0 | 988 } |
989 | |
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990 // Initialize the MethodData* corresponding to a given method. |
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991 MethodData::MethodData(methodHandle method, int size, TRAPS) { |
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992 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC |
0 | 993 ResourceMark rm; |
994 // Set the method back-pointer. | |
995 _method = method(); | |
1783 | 996 |
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997 init(); |
0 | 998 set_creation_mileage(mileage_of(method())); |
999 | |
1000 // Go through the bytecodes and allocate and initialize the | |
1001 // corresponding data cells. | |
1002 int data_size = 0; | |
1003 int empty_bc_count = 0; // number of bytecodes lacking data | |
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1004 _data[0] = 0; // apparently not set below. |
0 | 1005 BytecodeStream stream(method); |
1006 Bytecodes::Code c; | |
1007 while ((c = stream.next()) >= 0) { | |
1008 int size_in_bytes = initialize_data(&stream, data_size); | |
1009 data_size += size_in_bytes; | |
1010 if (size_in_bytes == 0) empty_bc_count += 1; | |
1011 } | |
1012 _data_size = data_size; | |
1013 int object_size = in_bytes(data_offset()) + data_size; | |
1014 | |
1015 // Add some extra DataLayout cells (at least one) to track stray traps. | |
1016 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); | |
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1017 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); |
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1018 |
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1019 // Add a cell to record information about modified arguments. |
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1020 // Set up _args_modified array after traps cells so that |
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1021 // the code for traps cells works. |
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1022 DataLayout *dp = data_layout_at(data_size + extra_size); |
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1023 |
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1024 int arg_size = method->size_of_parameters(); |
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1025 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); |
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1026 |
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1027 int arg_data_size = DataLayout::compute_size_in_bytes(arg_size+1); |
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1028 object_size += extra_size + arg_data_size; |
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1029 |
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1030 int args_cell = ParametersTypeData::compute_cell_count(method()); |
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1031 // If we are profiling parameters, we reserver an area near the end |
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1032 // of the MDO after the slots for bytecodes (because there's no bci |
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1033 // for method entry so they don't fit with the framework for the |
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1034 // profiling of bytecodes). We store the offset within the MDO of |
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1035 // this area (or -1 if no parameter is profiled) |
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1036 if (args_cell > 0) { |
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1037 object_size += DataLayout::compute_size_in_bytes(args_cell); |
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1038 _parameters_type_data_di = data_size + extra_size + arg_data_size; |
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1039 DataLayout *dp = data_layout_at(data_size + extra_size + arg_data_size); |
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1040 dp->initialize(DataLayout::parameters_type_data_tag, 0, args_cell); |
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1041 } else { |
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1042 _parameters_type_data_di = -1; |
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1043 } |
0 | 1044 |
1045 // Set an initial hint. Don't use set_hint_di() because | |
1046 // first_di() may be out of bounds if data_size is 0. | |
1047 // In that situation, _hint_di is never used, but at | |
1048 // least well-defined. | |
1049 _hint_di = first_di(); | |
1050 | |
1051 post_initialize(&stream); | |
1052 | |
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1053 set_size(object_size); |
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1054 } |
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1055 |
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1056 void MethodData::init() { |
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1057 _invocation_counter.init(); |
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1058 _backedge_counter.init(); |
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1059 _invocation_counter_start = 0; |
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1060 _backedge_counter_start = 0; |
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1061 _num_loops = 0; |
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1062 _num_blocks = 0; |
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1063 _highest_comp_level = 0; |
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1064 _highest_osr_comp_level = 0; |
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1065 _would_profile = true; |
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1066 |
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1067 // Initialize flags and trap history. |
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1068 _nof_decompiles = 0; |
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1069 _nof_overflow_recompiles = 0; |
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1070 _nof_overflow_traps = 0; |
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1071 clear_escape_info(); |
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1072 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); |
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1073 Copy::zero_to_words((HeapWord*) &_trap_hist, |
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1074 sizeof(_trap_hist) / sizeof(HeapWord)); |
0 | 1075 } |
1076 | |
1077 // Get a measure of how much mileage the method has on it. | |
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1078 int MethodData::mileage_of(Method* method) { |
0 | 1079 int mileage = 0; |
1783 | 1080 if (TieredCompilation) { |
1081 mileage = MAX2(method->invocation_count(), method->backedge_count()); | |
1082 } else { | |
1083 int iic = method->interpreter_invocation_count(); | |
1084 if (mileage < iic) mileage = iic; | |
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1085 MethodCounters* mcs = method->method_counters(); |
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1086 if (mcs != NULL) { |
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1087 InvocationCounter* ic = mcs->invocation_counter(); |
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1088 InvocationCounter* bc = mcs->backedge_counter(); |
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1089 int icval = ic->count(); |
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1090 if (ic->carry()) icval += CompileThreshold; |
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1091 if (mileage < icval) mileage = icval; |
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1092 int bcval = bc->count(); |
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1093 if (bc->carry()) bcval += CompileThreshold; |
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1094 if (mileage < bcval) mileage = bcval; |
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1095 } |
1783 | 1096 } |
0 | 1097 return mileage; |
1098 } | |
1099 | |
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1100 bool MethodData::is_mature() const { |
1783 | 1101 return CompilationPolicy::policy()->is_mature(_method); |
0 | 1102 } |
1103 | |
1104 // Translate a bci to its corresponding data index (di). | |
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1105 address MethodData::bci_to_dp(int bci) { |
0 | 1106 ResourceMark rm; |
1107 ProfileData* data = data_before(bci); | |
1108 ProfileData* prev = NULL; | |
1109 for ( ; is_valid(data); data = next_data(data)) { | |
1110 if (data->bci() >= bci) { | |
1111 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); | |
1112 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); | |
1113 return data->dp(); | |
1114 } | |
1115 prev = data; | |
1116 } | |
1117 return (address)limit_data_position(); | |
1118 } | |
1119 | |
1120 // Translate a bci to its corresponding data, or NULL. | |
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1121 ProfileData* MethodData::bci_to_data(int bci) { |
0 | 1122 ProfileData* data = data_before(bci); |
1123 for ( ; is_valid(data); data = next_data(data)) { | |
1124 if (data->bci() == bci) { | |
1125 set_hint_di(dp_to_di(data->dp())); | |
1126 return data; | |
1127 } else if (data->bci() > bci) { | |
1128 break; | |
1129 } | |
1130 } | |
1131 return bci_to_extra_data(bci, false); | |
1132 } | |
1133 | |
1134 // Translate a bci to its corresponding extra data, or NULL. | |
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1135 ProfileData* MethodData::bci_to_extra_data(int bci, bool create_if_missing) { |
0 | 1136 DataLayout* dp = extra_data_base(); |
1137 DataLayout* end = extra_data_limit(); | |
1138 DataLayout* avail = NULL; | |
1139 for (; dp < end; dp = next_extra(dp)) { | |
1140 // No need for "OrderAccess::load_acquire" ops, | |
1141 // since the data structure is monotonic. | |
1142 if (dp->tag() == DataLayout::no_tag) break; | |
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1143 if (dp->tag() == DataLayout::arg_info_data_tag) { |
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1144 dp = end; // ArgInfoData is at the end of extra data section. |
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1145 break; |
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1146 } |
0 | 1147 if (dp->bci() == bci) { |
1148 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
1149 return new BitData(dp); | |
1150 } | |
1151 } | |
1152 if (create_if_missing && dp < end) { | |
1153 // Allocate this one. There is no mutual exclusion, | |
1154 // so two threads could allocate different BCIs to the | |
1155 // same data layout. This means these extra data | |
1156 // records, like most other MDO contents, must not be | |
1157 // trusted too much. | |
1158 DataLayout temp; | |
1159 temp.initialize(DataLayout::bit_data_tag, bci, 0); | |
1160 dp->release_set_header(temp.header()); | |
1161 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
1162 //NO: assert(dp->bci() == bci, "no concurrent allocation"); | |
1163 return new BitData(dp); | |
1164 } | |
1165 return NULL; | |
1166 } | |
1167 | |
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1168 ArgInfoData *MethodData::arg_info() { |
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1169 DataLayout* dp = extra_data_base(); |
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1170 DataLayout* end = extra_data_limit(); |
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1171 for (; dp < end; dp = next_extra(dp)) { |
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1172 if (dp->tag() == DataLayout::arg_info_data_tag) |
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1173 return new ArgInfoData(dp); |
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1174 } |
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1175 return NULL; |
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1176 } |
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1177 |
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1178 // Printing |
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1179 |
0 | 1180 #ifndef PRODUCT |
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1181 |
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1182 void MethodData::print_on(outputStream* st) const { |
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1183 assert(is_methodData(), "should be method data"); |
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1184 st->print("method data for "); |
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1185 method()->print_value_on(st); |
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1186 st->cr(); |
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1187 print_data_on(st); |
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1188 } |
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1189 |
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1190 #endif //PRODUCT |
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1191 |
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1192 void MethodData::print_value_on(outputStream* st) const { |
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1193 assert(is_methodData(), "should be method data"); |
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1194 st->print("method data for "); |
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1195 method()->print_value_on(st); |
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1196 } |
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1197 |
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1198 #ifndef PRODUCT |
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1199 void MethodData::print_data_on(outputStream* st) const { |
0 | 1200 ResourceMark rm; |
1201 ProfileData* data = first_data(); | |
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1202 if (_parameters_type_data_di != -1) { |
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1203 parameters_type_data()->print_data_on(st); |
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1204 } |
0 | 1205 for ( ; is_valid(data); data = next_data(data)) { |
1206 st->print("%d", dp_to_di(data->dp())); | |
1207 st->fill_to(6); | |
1208 data->print_data_on(st); | |
1209 } | |
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1210 st->print_cr("--- Extra data:"); |
0 | 1211 DataLayout* dp = extra_data_base(); |
1212 DataLayout* end = extra_data_limit(); | |
1213 for (; dp < end; dp = next_extra(dp)) { | |
1214 // No need for "OrderAccess::load_acquire" ops, | |
1215 // since the data structure is monotonic. | |
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1216 if (dp->tag() == DataLayout::no_tag) continue; |
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1217 if (dp->tag() == DataLayout::bit_data_tag) { |
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1218 data = new BitData(dp); |
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1219 } else { |
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1220 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); |
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1221 data = new ArgInfoData(dp); |
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1222 dp = end; // ArgInfoData is at the end of extra data section. |
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1223 } |
0 | 1224 st->print("%d", dp_to_di(data->dp())); |
1225 st->fill_to(6); | |
1226 data->print_data_on(st); | |
1227 } | |
1228 } | |
1229 #endif | |
1230 | |
7956 | 1231 #if INCLUDE_SERVICES |
1232 // Size Statistics | |
1233 void MethodData::collect_statistics(KlassSizeStats *sz) const { | |
1234 int n = sz->count(this); | |
1235 sz->_method_data_bytes += n; | |
1236 sz->_method_all_bytes += n; | |
1237 sz->_rw_bytes += n; | |
1238 } | |
1239 #endif // INCLUDE_SERVICES | |
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1240 |
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1241 // Verification |
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1242 |
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1243 void MethodData::verify_on(outputStream* st) { |
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1244 guarantee(is_methodData(), "object must be method data"); |
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1245 // guarantee(m->is_perm(), "should be in permspace"); |
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1246 this->verify_data_on(st); |
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1247 } |
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1248 |
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1249 void MethodData::verify_data_on(outputStream* st) { |
0 | 1250 NEEDS_CLEANUP; |
1251 // not yet implemented. | |
1252 } | |
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1253 |
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1254 bool MethodData::profile_jsr292(methodHandle m, int bci) { |
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1255 if (m->is_compiled_lambda_form()) { |
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1256 return true; |
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1257 } |
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1258 |
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1259 Bytecode_invoke inv(m , bci); |
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1260 return inv.is_invokedynamic() || inv.is_invokehandle(); |
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1261 } |
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1262 |
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1263 int MethodData::profile_arguments_flag() { |
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1264 return TypeProfileLevel % 10; |
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1265 } |
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1266 |
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1267 bool MethodData::profile_arguments() { |
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1268 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; |
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1269 } |
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1270 |
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1271 bool MethodData::profile_arguments_jsr292_only() { |
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1272 return profile_arguments_flag() == type_profile_jsr292; |
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1273 } |
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1274 |
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1275 bool MethodData::profile_all_arguments() { |
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1276 return profile_arguments_flag() == type_profile_all; |
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1277 } |
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1278 |
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1279 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { |
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1280 if (!profile_arguments()) { |
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1281 return false; |
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1282 } |
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1283 |
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1284 if (profile_all_arguments()) { |
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1285 return true; |
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1286 } |
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1287 |
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1288 assert(profile_arguments_jsr292_only(), "inconsistent"); |
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1289 return profile_jsr292(m, bci); |
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1290 } |
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1291 |
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1292 int MethodData::profile_return_flag() { |
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1293 return (TypeProfileLevel % 100) / 10; |
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1294 } |
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1295 |
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1296 bool MethodData::profile_return() { |
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1297 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; |
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1298 } |
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1299 |
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1300 bool MethodData::profile_return_jsr292_only() { |
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1301 return profile_return_flag() == type_profile_jsr292; |
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1302 } |
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1303 |
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1304 bool MethodData::profile_all_return() { |
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1305 return profile_return_flag() == type_profile_all; |
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1306 } |
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1307 |
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1308 bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { |
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1309 if (!profile_return()) { |
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1310 return false; |
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1311 } |
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1312 |
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1313 if (profile_all_return()) { |
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1314 return true; |
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1315 } |
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1316 |
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1317 assert(profile_return_jsr292_only(), "inconsistent"); |
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1318 return profile_jsr292(m, bci); |
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1319 } |
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1320 |
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1321 int MethodData::profile_parameters_flag() { |
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1322 return TypeProfileLevel / 100; |
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1323 } |
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1324 |
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1325 bool MethodData::profile_parameters() { |
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1326 return profile_parameters_flag() > no_type_profile && profile_parameters_flag() <= type_profile_all; |
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1327 } |
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1328 |
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1329 bool MethodData::profile_parameters_jsr292_only() { |
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1330 return profile_parameters_flag() == type_profile_jsr292; |
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1331 } |
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1332 |
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1333 bool MethodData::profile_all_parameters() { |
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1334 return profile_parameters_flag() == type_profile_all; |
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1335 } |
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1336 |
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1337 bool MethodData::profile_parameters_for_method(methodHandle m) { |
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1338 if (!profile_parameters()) { |
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1339 return false; |
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1340 } |
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1341 |
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1342 if (profile_all_parameters()) { |
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1343 return true; |
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1344 } |
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1345 |
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1346 assert(profile_parameters_jsr292_only(), "inconsistent"); |
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1347 return m->is_compiled_lambda_form(); |
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1348 } |