Mercurial > hg > truffle
annotate src/share/vm/oops/methodData.cpp @ 13907:6fc05ad86490
Remove unused 'negated' arguments.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Fri, 07 Feb 2014 15:03:21 +0100 |
parents | 389d40d7d99f |
children | d8041d695d19 |
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 | |
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 } | |
391 #endif // GRAAL | |
392 | |
0 | 393 #ifndef PRODUCT |
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394 void ReceiverTypeData::print_receiver_data_on(outputStream* st) const { |
0 | 395 uint row; |
396 int entries = 0; | |
397 for (row = 0; row < row_limit(); row++) { | |
398 if (receiver(row) != NULL) entries++; | |
399 } | |
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400 #ifdef GRAAL |
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401 st->print_cr("count(%u) nonprofiled_count(%u) entries(%u)", count(), nonprofiled_count(), entries); |
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402 #else |
0 | 403 st->print_cr("count(%u) entries(%u)", count(), entries); |
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404 #endif |
1783 | 405 int total = count(); |
406 for (row = 0; row < row_limit(); row++) { | |
407 if (receiver(row) != NULL) { | |
408 total += receiver_count(row); | |
409 } | |
410 } | |
0 | 411 for (row = 0; row < row_limit(); row++) { |
412 if (receiver(row) != NULL) { | |
413 tab(st); | |
414 receiver(row)->print_value_on(st); | |
1783 | 415 st->print_cr("(%u %4.2f)", receiver_count(row), (float) receiver_count(row) / (float) total); |
0 | 416 } |
417 } | |
418 } | |
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419 void ReceiverTypeData::print_data_on(outputStream* st) const { |
0 | 420 print_shared(st, "ReceiverTypeData"); |
421 print_receiver_data_on(st); | |
422 } | |
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423 |
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424 #ifdef GRAAL |
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425 void VirtualCallData::print_method_data_on(outputStream* st) const { |
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426 uint row; |
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427 int entries = 0; |
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428 for (row = 0; row < method_row_limit(); row++) { |
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429 if (method(row) != NULL) entries++; |
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430 } |
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431 tab(st); |
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432 st->print_cr("method_entries(%u)", entries); |
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433 int total = count(); |
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434 for (row = 0; row < method_row_limit(); row++) { |
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435 if (method(row) != NULL) { |
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436 total += method_count(row); |
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437 } |
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438 } |
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439 for (row = 0; row < method_row_limit(); row++) { |
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440 if (method(row) != NULL) { |
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441 tab(st); |
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442 method(row)->print_value_on(st); |
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443 st->print_cr("(%u %4.2f)", method_count(row), (float) method_count(row) / (float) total); |
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444 } |
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445 } |
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446 } |
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447 #endif |
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448 |
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449 void VirtualCallData::print_data_on(outputStream* st) const { |
0 | 450 print_shared(st, "VirtualCallData"); |
451 print_receiver_data_on(st); | |
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452 #ifdef GRAAL |
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453 print_method_data_on(st); |
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454 #endif |
0 | 455 } |
456 #endif // !PRODUCT | |
457 | |
458 // ================================================================== | |
459 // RetData | |
460 // | |
461 // A RetData is used to access profiling information for a ret bytecode. | |
462 // It is composed of a count of the number of times that the ret has | |
463 // been executed, followed by a series of triples of the form | |
464 // (bci, count, di) which count the number of times that some bci was the | |
465 // target of the ret and cache a corresponding displacement. | |
466 | |
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467 void RetData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 468 for (uint row = 0; row < row_limit(); row++) { |
469 set_bci_displacement(row, -1); | |
470 set_bci(row, no_bci); | |
471 } | |
472 // release so other threads see a consistent state. bci is used as | |
473 // a valid flag for bci_displacement. | |
474 OrderAccess::release(); | |
475 } | |
476 | |
477 // This routine needs to atomically update the RetData structure, so the | |
478 // caller needs to hold the RetData_lock before it gets here. Since taking | |
479 // the lock can block (and allow GC) and since RetData is a ProfileData is a | |
480 // wrapper around a derived oop, taking the lock in _this_ method will | |
481 // basically cause the 'this' pointer's _data field to contain junk after the | |
482 // lock. We require the caller to take the lock before making the ProfileData | |
483 // structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret | |
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484 address RetData::fixup_ret(int return_bci, MethodData* h_mdo) { |
0 | 485 // First find the mdp which corresponds to the return bci. |
486 address mdp = h_mdo->bci_to_dp(return_bci); | |
487 | |
488 // Now check to see if any of the cache slots are open. | |
489 for (uint row = 0; row < row_limit(); row++) { | |
490 if (bci(row) == no_bci) { | |
491 set_bci_displacement(row, mdp - dp()); | |
492 set_bci_count(row, DataLayout::counter_increment); | |
493 // Barrier to ensure displacement is written before the bci; allows | |
494 // the interpreter to read displacement without fear of race condition. | |
495 release_set_bci(row, return_bci); | |
496 break; | |
497 } | |
498 } | |
499 return mdp; | |
500 } | |
501 | |
502 | |
503 #ifndef PRODUCT | |
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504 void RetData::print_data_on(outputStream* st) const { |
0 | 505 print_shared(st, "RetData"); |
506 uint row; | |
507 int entries = 0; | |
508 for (row = 0; row < row_limit(); row++) { | |
509 if (bci(row) != no_bci) entries++; | |
510 } | |
511 st->print_cr("count(%u) entries(%u)", count(), entries); | |
512 for (row = 0; row < row_limit(); row++) { | |
513 if (bci(row) != no_bci) { | |
514 tab(st); | |
515 st->print_cr("bci(%d: count(%u) displacement(%d))", | |
516 bci(row), bci_count(row), bci_displacement(row)); | |
517 } | |
518 } | |
519 } | |
520 #endif // !PRODUCT | |
521 | |
522 // ================================================================== | |
523 // BranchData | |
524 // | |
525 // A BranchData is used to access profiling data for a two-way branch. | |
526 // It consists of taken and not_taken counts as well as a data displacement | |
527 // for the taken case. | |
528 | |
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529 void BranchData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
0 | 530 assert(stream->bci() == bci(), "wrong pos"); |
531 int target = stream->dest(); | |
532 int my_di = mdo->dp_to_di(dp()); | |
533 int target_di = mdo->bci_to_di(target); | |
534 int offset = target_di - my_di; | |
535 set_displacement(offset); | |
536 } | |
537 | |
538 #ifndef PRODUCT | |
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539 void BranchData::print_data_on(outputStream* st) const { |
0 | 540 print_shared(st, "BranchData"); |
541 st->print_cr("taken(%u) displacement(%d)", | |
542 taken(), displacement()); | |
543 tab(st); | |
544 st->print_cr("not taken(%u)", not_taken()); | |
545 } | |
546 #endif | |
547 | |
548 // ================================================================== | |
549 // MultiBranchData | |
550 // | |
551 // A MultiBranchData is used to access profiling information for | |
552 // a multi-way branch (*switch bytecodes). It consists of a series | |
553 // of (count, displacement) pairs, which count the number of times each | |
554 // case was taken and specify the data displacment for each branch target. | |
555 | |
556 int MultiBranchData::compute_cell_count(BytecodeStream* stream) { | |
557 int cell_count = 0; | |
558 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 559 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
560 cell_count = 1 + per_case_cell_count * (1 + sw.length()); // 1 for default | |
0 | 561 } else { |
2142 | 562 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
563 cell_count = 1 + per_case_cell_count * (sw.number_of_pairs() + 1); // 1 for default | |
0 | 564 } |
565 return cell_count; | |
566 } | |
567 | |
568 void MultiBranchData::post_initialize(BytecodeStream* stream, | |
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569 MethodData* mdo) { |
0 | 570 assert(stream->bci() == bci(), "wrong pos"); |
571 int target; | |
572 int my_di; | |
573 int target_di; | |
574 int offset; | |
575 if (stream->code() == Bytecodes::_tableswitch) { | |
2142 | 576 Bytecode_tableswitch sw(stream->method()(), stream->bcp()); |
577 int len = sw.length(); | |
0 | 578 assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); |
579 for (int count = 0; count < len; count++) { | |
2142 | 580 target = sw.dest_offset_at(count) + bci(); |
0 | 581 my_di = mdo->dp_to_di(dp()); |
582 target_di = mdo->bci_to_di(target); | |
583 offset = target_di - my_di; | |
584 set_displacement_at(count, offset); | |
585 } | |
2142 | 586 target = sw.default_offset() + bci(); |
0 | 587 my_di = mdo->dp_to_di(dp()); |
588 target_di = mdo->bci_to_di(target); | |
589 offset = target_di - my_di; | |
590 set_default_displacement(offset); | |
591 | |
592 } else { | |
2142 | 593 Bytecode_lookupswitch sw(stream->method()(), stream->bcp()); |
594 int npairs = sw.number_of_pairs(); | |
0 | 595 assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); |
596 for (int count = 0; count < npairs; count++) { | |
2142 | 597 LookupswitchPair pair = sw.pair_at(count); |
598 target = pair.offset() + bci(); | |
0 | 599 my_di = mdo->dp_to_di(dp()); |
600 target_di = mdo->bci_to_di(target); | |
601 offset = target_di - my_di; | |
602 set_displacement_at(count, offset); | |
603 } | |
2142 | 604 target = sw.default_offset() + bci(); |
0 | 605 my_di = mdo->dp_to_di(dp()); |
606 target_di = mdo->bci_to_di(target); | |
607 offset = target_di - my_di; | |
608 set_default_displacement(offset); | |
609 } | |
610 } | |
611 | |
612 #ifndef PRODUCT | |
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613 void MultiBranchData::print_data_on(outputStream* st) const { |
0 | 614 print_shared(st, "MultiBranchData"); |
615 st->print_cr("default_count(%u) displacement(%d)", | |
616 default_count(), default_displacement()); | |
617 int cases = number_of_cases(); | |
618 for (int i = 0; i < cases; i++) { | |
619 tab(st); | |
620 st->print_cr("count(%u) displacement(%d)", | |
621 count_at(i), displacement_at(i)); | |
622 } | |
623 } | |
624 #endif | |
625 | |
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626 #ifndef PRODUCT |
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627 void ArgInfoData::print_data_on(outputStream* st) const { |
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628 print_shared(st, "ArgInfoData"); |
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629 int nargs = number_of_args(); |
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630 for (int i = 0; i < nargs; i++) { |
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631 st->print(" 0x%x", arg_modified(i)); |
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632 } |
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633 st->cr(); |
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634 } |
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635 |
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636 #endif |
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637 |
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638 int ParametersTypeData::compute_cell_count(Method* m) { |
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639 if (!MethodData::profile_parameters_for_method(m)) { |
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640 return 0; |
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641 } |
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642 int max = TypeProfileParmsLimit == -1 ? INT_MAX : TypeProfileParmsLimit; |
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643 int obj_args = TypeStackSlotEntries::compute_cell_count(m->signature(), !m->is_static(), max); |
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644 if (obj_args > 0) { |
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645 return obj_args + 1; // 1 cell for array len |
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646 } |
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647 return 0; |
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648 } |
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649 |
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650 void ParametersTypeData::post_initialize(BytecodeStream* stream, MethodData* mdo) { |
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651 _parameters.post_initialize(mdo->method()->signature(), !mdo->method()->is_static(), true); |
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652 } |
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653 |
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654 bool ParametersTypeData::profiling_enabled() { |
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655 return MethodData::profile_parameters(); |
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656 } |
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657 |
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658 #ifndef PRODUCT |
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659 void ParametersTypeData::print_data_on(outputStream* st) const { |
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660 st->print("parameter types"); |
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661 _parameters.print_data_on(st); |
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662 } |
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663 #endif |
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664 |
0 | 665 // ================================================================== |
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666 // MethodData* |
0 | 667 // |
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668 // A MethodData* holds information which has been collected about |
0 | 669 // a method. |
670 | |
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671 MethodData* MethodData::allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS) { |
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672 int size = MethodData::compute_allocation_size_in_words(method); |
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673 |
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iklam
parents:
10107
diff
changeset
|
674 return new (loader_data, size, false, MetaspaceObj::MethodDataType, THREAD) |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10107
diff
changeset
|
675 MethodData(method(), size, CHECK_NULL); |
6725
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diff
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|
676 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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2264
diff
changeset
|
677 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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2264
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|
678 int MethodData::bytecode_cell_count(Bytecodes::Code code) { |
8883 | 679 #if defined(COMPILER1) && !(defined(COMPILER2) || defined(GRAAL)) |
8860 | 680 return no_profile_data; |
681 #else | |
0 | 682 switch (code) { |
683 case Bytecodes::_checkcast: | |
684 case Bytecodes::_instanceof: | |
685 case Bytecodes::_aastore: | |
686 if (TypeProfileCasts) { | |
687 return ReceiverTypeData::static_cell_count(); | |
688 } else { | |
689 return BitData::static_cell_count(); | |
690 } | |
691 case Bytecodes::_invokespecial: | |
692 case Bytecodes::_invokestatic: | |
12882
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8026054: New type profiling points: type of return values at calls
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parents:
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diff
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|
693 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
12875
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10376
diff
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|
694 return variable_cell_count; |
d13d7aba8c12
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diff
changeset
|
695 } else { |
d13d7aba8c12
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diff
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|
696 return CounterData::static_cell_count(); |
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|
697 } |
0 | 698 case Bytecodes::_goto: |
699 case Bytecodes::_goto_w: | |
700 case Bytecodes::_jsr: | |
701 case Bytecodes::_jsr_w: | |
702 return JumpData::static_cell_count(); | |
703 case Bytecodes::_invokevirtual: | |
704 case Bytecodes::_invokeinterface: | |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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diff
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|
705 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
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10376
diff
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|
706 return variable_cell_count; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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diff
changeset
|
707 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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parents:
10376
diff
changeset
|
708 return VirtualCallData::static_cell_count(); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
709 } |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
196
diff
changeset
|
710 case Bytecodes::_invokedynamic: |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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parents:
12875
diff
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711 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
12875
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|
712 return variable_cell_count; |
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8023657: New type profiling points: arguments to call
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|
713 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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diff
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|
714 return CounterData::static_cell_count(); |
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|
715 } |
0 | 716 case Bytecodes::_ret: |
717 return RetData::static_cell_count(); | |
718 case Bytecodes::_ifeq: | |
719 case Bytecodes::_ifne: | |
720 case Bytecodes::_iflt: | |
721 case Bytecodes::_ifge: | |
722 case Bytecodes::_ifgt: | |
723 case Bytecodes::_ifle: | |
724 case Bytecodes::_if_icmpeq: | |
725 case Bytecodes::_if_icmpne: | |
726 case Bytecodes::_if_icmplt: | |
727 case Bytecodes::_if_icmpge: | |
728 case Bytecodes::_if_icmpgt: | |
729 case Bytecodes::_if_icmple: | |
730 case Bytecodes::_if_acmpeq: | |
731 case Bytecodes::_if_acmpne: | |
732 case Bytecodes::_ifnull: | |
733 case Bytecodes::_ifnonnull: | |
734 return BranchData::static_cell_count(); | |
735 case Bytecodes::_lookupswitch: | |
736 case Bytecodes::_tableswitch: | |
737 return variable_cell_count; | |
738 } | |
739 return no_profile_data; | |
8860 | 740 #endif |
0 | 741 } |
742 | |
743 // Compute the size of the profiling information corresponding to | |
744 // the current bytecode. | |
6725
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diff
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|
745 int MethodData::compute_data_size(BytecodeStream* stream) { |
0 | 746 int cell_count = bytecode_cell_count(stream->code()); |
747 if (cell_count == no_profile_data) { | |
748 return 0; | |
749 } | |
750 if (cell_count == variable_cell_count) { | |
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751 switch (stream->code()) { |
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8023657: New type profiling points: arguments to call
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|
752 case Bytecodes::_lookupswitch: |
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|
753 case Bytecodes::_tableswitch: |
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|
754 cell_count = MultiBranchData::compute_cell_count(stream); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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|
755 break; |
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|
756 case Bytecodes::_invokespecial: |
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diff
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|
757 case Bytecodes::_invokestatic: |
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8023657: New type profiling points: arguments to call
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|
758 case Bytecodes::_invokedynamic: |
12882
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8026054: New type profiling points: type of return values at calls
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diff
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|
759 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
ce0cc25bc5e2
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diff
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|
760 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
ce0cc25bc5e2
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diff
changeset
|
761 profile_return_for_invoke(stream->method(), stream->bci())) { |
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parents:
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|
762 cell_count = CallTypeData::compute_cell_count(stream); |
d13d7aba8c12
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roland
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|
763 } else { |
d13d7aba8c12
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|
764 cell_count = CounterData::static_cell_count(); |
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8023657: New type profiling points: arguments to call
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diff
changeset
|
765 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
766 break; |
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roland
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10376
diff
changeset
|
767 case Bytecodes::_invokevirtual: |
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diff
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|
768 case Bytecodes::_invokeinterface: { |
12882
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8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
769 assert(MethodData::profile_arguments() || MethodData::profile_return(), "should be collecting args profile"); |
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8026054: New type profiling points: type of return values at calls
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diff
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|
770 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
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changeset
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771 profile_return_for_invoke(stream->method(), stream->bci())) { |
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diff
changeset
|
772 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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|
773 } else { |
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diff
changeset
|
774 cell_count = VirtualCallData::static_cell_count(); |
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diff
changeset
|
775 } |
d13d7aba8c12
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changeset
|
776 break; |
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|
777 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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changeset
|
778 default: |
d13d7aba8c12
8023657: New type profiling points: arguments to call
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|
779 fatal("unexpected bytecode for var length profile data"); |
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8023657: New type profiling points: arguments to call
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|
780 } |
0 | 781 } |
782 // Note: cell_count might be zero, meaning that there is just | |
783 // a DataLayout header, with no extra cells. | |
784 assert(cell_count >= 0, "sanity"); | |
785 return DataLayout::compute_size_in_bytes(cell_count); | |
786 } | |
787 | |
8616
d343737786fe
changed profiling of exceptions so that the ExceptionSeen flag also works without GRAALVM
Christian Haeubl <haeubl@ssw.jku.at>
parents:
8615
diff
changeset
|
788 #ifdef GRAAL |
6948
e522a00b91aa
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works
Doug Simon <doug.simon@oracle.com>
diff
changeset
|
789 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) { |
4568
8e1d9c27989a
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
|
790 if (!ProfileTraps) return 0; |
8e1d9c27989a
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
|
791 |
8e1d9c27989a
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
|
792 // 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:
4439
diff
changeset
|
793 return MIN2(empty_bc_count, MAX2(4, (empty_bc_count * 30) / 100)); |
8e1d9c27989a
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
|
794 } |
8e1d9c27989a
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
|
795 #else |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2264
diff
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|
796 int MethodData::compute_extra_data_count(int data_size, int empty_bc_count) { |
0 | 797 if (ProfileTraps) { |
798 // Assume that up to 3% of BCIs with no MDP will need to allocate one. | |
799 int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; | |
800 // If the method is large, let the extra BCIs grow numerous (to ~1%). | |
801 int one_percent_of_data | |
802 = (uint)data_size / (DataLayout::header_size_in_bytes()*128); | |
803 if (extra_data_count < one_percent_of_data) | |
804 extra_data_count = one_percent_of_data; | |
805 if (extra_data_count > empty_bc_count) | |
806 extra_data_count = empty_bc_count; // no need for more | |
807 return extra_data_count; | |
808 } else { | |
809 return 0; | |
810 } | |
811 } | |
4568
8e1d9c27989a
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
|
812 #endif |
0 | 813 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2264
diff
changeset
|
814 // Compute the size of the MethodData* necessary to store |
0 | 815 // profiling information about a given method. Size is in bytes. |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2264
diff
changeset
|
816 int MethodData::compute_allocation_size_in_bytes(methodHandle method) { |
0 | 817 int data_size = 0; |
818 BytecodeStream stream(method); | |
819 Bytecodes::Code c; | |
820 int empty_bc_count = 0; // number of bytecodes lacking data | |
821 while ((c = stream.next()) >= 0) { | |
822 int size_in_bytes = compute_data_size(&stream); | |
823 data_size += size_in_bytes; | |
13181
389d40d7d99f
fixed bug in MethodData and added assertion that precomputed size == initialized size
Doug Simon <doug.simon@oracle.com>
parents:
13108
diff
changeset
|
824 if (size_in_bytes == 0 GRAAL_ONLY(&& Bytecodes::can_trap(c))) empty_bc_count += 1; |
0 | 825 } |
826 int object_size = in_bytes(data_offset()) + data_size; | |
827 | |
828 // Add some extra DataLayout cells (at least one) to track stray traps. | |
829 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); | |
830 object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); | |
831 | |
45
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
832 // Add a cell to record information about modified arguments. |
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
833 int arg_size = method->size_of_parameters(); |
48a3fa21394b
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
0
diff
changeset
|
834 object_size += DataLayout::compute_size_in_bytes(arg_size+1); |
12875
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8023657: New type profiling points: arguments to call
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diff
changeset
|
835 |
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
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12882
diff
changeset
|
836 // Reserve room for an area of the MDO dedicated to profiling of |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
837 // parameters |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
838 int args_cell = ParametersTypeData::compute_cell_count(method()); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
839 if (args_cell > 0) { |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
840 object_size += DataLayout::compute_size_in_bytes(args_cell); |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12882
diff
changeset
|
841 } |
0 | 842 return object_size; |
843 } | |
844 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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2264
diff
changeset
|
845 // Compute the size of the MethodData* necessary to store |
0 | 846 // profiling information about a given method. Size is in words |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
2264
diff
changeset
|
847 int MethodData::compute_allocation_size_in_words(methodHandle method) { |
0 | 848 int byte_size = compute_allocation_size_in_bytes(method); |
849 int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; | |
850 return align_object_size(word_size); | |
851 } | |
852 | |
853 // Initialize an individual data segment. Returns the size of | |
854 // the segment in bytes. | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
855 int MethodData::initialize_data(BytecodeStream* stream, |
0 | 856 int data_index) { |
8883 | 857 #if defined(COMPILER1) && !(defined(COMPILER2) || defined(GRAAL)) |
8860 | 858 return 0; |
859 #else | |
0 | 860 int cell_count = -1; |
861 int tag = DataLayout::no_tag; | |
862 DataLayout* data_layout = data_layout_at(data_index); | |
863 Bytecodes::Code c = stream->code(); | |
864 switch (c) { | |
865 case Bytecodes::_checkcast: | |
866 case Bytecodes::_instanceof: | |
867 case Bytecodes::_aastore: | |
868 if (TypeProfileCasts) { | |
869 cell_count = ReceiverTypeData::static_cell_count(); | |
870 tag = DataLayout::receiver_type_data_tag; | |
871 } else { | |
872 cell_count = BitData::static_cell_count(); | |
873 tag = DataLayout::bit_data_tag; | |
874 } | |
875 break; | |
876 case Bytecodes::_invokespecial: | |
12875
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
877 case Bytecodes::_invokestatic: { |
d13d7aba8c12
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roland
parents:
10376
diff
changeset
|
878 int counter_data_cell_count = CounterData::static_cell_count(); |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
879 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
changeset
|
880 profile_return_for_invoke(stream->method(), stream->bci())) { |
12875
d13d7aba8c12
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roland
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10376
diff
changeset
|
881 cell_count = CallTypeData::compute_cell_count(stream); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
882 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
883 cell_count = counter_data_cell_count; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
884 } |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
885 if (cell_count > counter_data_cell_count) { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
886 tag = DataLayout::call_type_data_tag; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
887 } else { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
888 tag = DataLayout::counter_data_tag; |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
889 } |
0 | 890 break; |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10376
diff
changeset
|
891 } |
0 | 892 case Bytecodes::_goto: |
893 case Bytecodes::_goto_w: | |
894 case Bytecodes::_jsr: | |
895 case Bytecodes::_jsr_w: | |
896 cell_count = JumpData::static_cell_count(); | |
897 tag = DataLayout::jump_data_tag; | |
898 break; | |
899 case Bytecodes::_invokevirtual: | |
12875
d13d7aba8c12
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roland
parents:
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diff
changeset
|
900 case Bytecodes::_invokeinterface: { |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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10376
diff
changeset
|
901 int virtual_call_data_cell_count = VirtualCallData::static_cell_count(); |
12882
ce0cc25bc5e2
8026054: New type profiling points: type of return values at calls
roland
parents:
12875
diff
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|
902 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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903 profile_return_for_invoke(stream->method(), stream->bci())) { |
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904 cell_count = VirtualCallTypeData::compute_cell_count(stream); |
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905 } else { |
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|
906 cell_count = virtual_call_data_cell_count; |
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|
907 } |
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908 if (cell_count > virtual_call_data_cell_count) { |
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909 tag = DataLayout::virtual_call_type_data_tag; |
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910 } else { |
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911 tag = DataLayout::virtual_call_data_tag; |
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|
912 } |
0 | 913 break; |
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|
914 } |
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915 case Bytecodes::_invokedynamic: { |
726
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916 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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917 int counter_data_cell_count = CounterData::static_cell_count(); |
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918 if (profile_arguments_for_invoke(stream->method(), stream->bci()) || |
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919 profile_return_for_invoke(stream->method(), stream->bci())) { |
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920 cell_count = CallTypeData::compute_cell_count(stream); |
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921 } else { |
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922 cell_count = counter_data_cell_count; |
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923 } |
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924 if (cell_count > counter_data_cell_count) { |
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925 tag = DataLayout::call_type_data_tag; |
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926 } else { |
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927 tag = DataLayout::counter_data_tag; |
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|
928 } |
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|
929 break; |
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|
930 } |
0 | 931 case Bytecodes::_ret: |
932 cell_count = RetData::static_cell_count(); | |
933 tag = DataLayout::ret_data_tag; | |
934 break; | |
935 case Bytecodes::_ifeq: | |
936 case Bytecodes::_ifne: | |
937 case Bytecodes::_iflt: | |
938 case Bytecodes::_ifge: | |
939 case Bytecodes::_ifgt: | |
940 case Bytecodes::_ifle: | |
941 case Bytecodes::_if_icmpeq: | |
942 case Bytecodes::_if_icmpne: | |
943 case Bytecodes::_if_icmplt: | |
944 case Bytecodes::_if_icmpge: | |
945 case Bytecodes::_if_icmpgt: | |
946 case Bytecodes::_if_icmple: | |
947 case Bytecodes::_if_acmpeq: | |
948 case Bytecodes::_if_acmpne: | |
949 case Bytecodes::_ifnull: | |
950 case Bytecodes::_ifnonnull: | |
951 cell_count = BranchData::static_cell_count(); | |
952 tag = DataLayout::branch_data_tag; | |
953 break; | |
954 case Bytecodes::_lookupswitch: | |
955 case Bytecodes::_tableswitch: | |
956 cell_count = MultiBranchData::compute_cell_count(stream); | |
957 tag = DataLayout::multi_branch_data_tag; | |
958 break; | |
959 } | |
960 assert(tag == DataLayout::multi_branch_data_tag || | |
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961 ((MethodData::profile_arguments() || MethodData::profile_return()) && |
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962 (tag == DataLayout::call_type_data_tag || |
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963 tag == DataLayout::counter_data_tag || |
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964 tag == DataLayout::virtual_call_type_data_tag || |
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965 tag == DataLayout::virtual_call_data_tag)) || |
0 | 966 cell_count == bytecode_cell_count(c), "cell counts must agree"); |
967 if (cell_count >= 0) { | |
968 assert(tag != DataLayout::no_tag, "bad tag"); | |
969 assert(bytecode_has_profile(c), "agree w/ BHP"); | |
970 data_layout->initialize(tag, stream->bci(), cell_count); | |
971 return DataLayout::compute_size_in_bytes(cell_count); | |
972 } else { | |
973 assert(!bytecode_has_profile(c), "agree w/ !BHP"); | |
974 return 0; | |
975 } | |
8860 | 976 #endif |
0 | 977 } |
978 | |
979 // Get the data at an arbitrary (sort of) data index. | |
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980 ProfileData* MethodData::data_at(int data_index) const { |
0 | 981 if (out_of_bounds(data_index)) { |
982 return NULL; | |
983 } | |
984 DataLayout* data_layout = data_layout_at(data_index); | |
941 | 985 return data_layout->data_in(); |
986 } | |
0 | 987 |
941 | 988 ProfileData* DataLayout::data_in() { |
989 switch (tag()) { | |
0 | 990 case DataLayout::no_tag: |
991 default: | |
992 ShouldNotReachHere(); | |
993 return NULL; | |
994 case DataLayout::bit_data_tag: | |
941 | 995 return new BitData(this); |
0 | 996 case DataLayout::counter_data_tag: |
941 | 997 return new CounterData(this); |
0 | 998 case DataLayout::jump_data_tag: |
941 | 999 return new JumpData(this); |
0 | 1000 case DataLayout::receiver_type_data_tag: |
941 | 1001 return new ReceiverTypeData(this); |
0 | 1002 case DataLayout::virtual_call_data_tag: |
941 | 1003 return new VirtualCallData(this); |
0 | 1004 case DataLayout::ret_data_tag: |
941 | 1005 return new RetData(this); |
0 | 1006 case DataLayout::branch_data_tag: |
941 | 1007 return new BranchData(this); |
0 | 1008 case DataLayout::multi_branch_data_tag: |
941 | 1009 return new MultiBranchData(this); |
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1010 case DataLayout::arg_info_data_tag: |
941 | 1011 return new ArgInfoData(this); |
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1012 case DataLayout::call_type_data_tag: |
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1013 return new CallTypeData(this); |
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1014 case DataLayout::virtual_call_type_data_tag: |
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1015 return new VirtualCallTypeData(this); |
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1016 case DataLayout::parameters_type_data_tag: |
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1017 return new ParametersTypeData(this); |
0 | 1018 }; |
1019 } | |
1020 | |
1021 // Iteration over data. | |
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1022 ProfileData* MethodData::next_data(ProfileData* current) const { |
0 | 1023 int current_index = dp_to_di(current->dp()); |
1024 int next_index = current_index + current->size_in_bytes(); | |
1025 ProfileData* next = data_at(next_index); | |
1026 return next; | |
1027 } | |
1028 | |
1029 // Give each of the data entries a chance to perform specific | |
1030 // data initialization. | |
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1031 void MethodData::post_initialize(BytecodeStream* stream) { |
0 | 1032 ResourceMark rm; |
1033 ProfileData* data; | |
1034 for (data = first_data(); is_valid(data); data = next_data(data)) { | |
1035 stream->set_start(data->bci()); | |
1036 stream->next(); | |
1037 data->post_initialize(stream, this); | |
1038 } | |
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1039 if (_parameters_type_data_di != -1) { |
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1040 parameters_type_data()->post_initialize(NULL, this); |
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1041 } |
0 | 1042 } |
1043 | |
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1044 // Initialize the MethodData* corresponding to a given method. |
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1045 MethodData::MethodData(methodHandle method, int size, TRAPS) { |
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1046 // Set the method back-pointer. |
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1047 _method = method(); |
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1048 initialize(); |
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1049 } |
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1050 |
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1051 void MethodData::initialize(bool for_reprofile) { |
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1052 No_Safepoint_Verifier no_safepoint; // init function atomic wrt GC |
0 | 1053 ResourceMark rm; |
1783 | 1054 |
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1055 init(); |
0 | 1056 set_creation_mileage(mileage_of(method())); |
1057 | |
1058 // Go through the bytecodes and allocate and initialize the | |
1059 // corresponding data cells. | |
1060 int data_size = 0; | |
1061 int empty_bc_count = 0; // number of bytecodes lacking data | |
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1062 _data[0] = 0; // apparently not set below. |
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1063 BytecodeStream stream(method()); |
0 | 1064 Bytecodes::Code c; |
1065 while ((c = stream.next()) >= 0) { | |
1066 int size_in_bytes = initialize_data(&stream, data_size); | |
1067 data_size += size_in_bytes; | |
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1068 if (size_in_bytes == 0 GRAAL_ONLY(&& Bytecodes::can_trap(c))) empty_bc_count += 1; |
0 | 1069 } |
1070 _data_size = data_size; | |
1071 int object_size = in_bytes(data_offset()) + data_size; | |
1072 | |
1073 // Add some extra DataLayout cells (at least one) to track stray traps. | |
1074 int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); | |
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1075 int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); |
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1076 |
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1077 #ifdef GRAAL |
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1078 if (for_reprofile) { |
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1079 // Clear out extra data |
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1080 Copy::zero_to_bytes((HeapWord*) extra_data_base(), extra_size); |
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1081 } |
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1082 #endif |
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1083 |
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1084 // Add a cell to record information about modified arguments. |
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1085 // Set up _args_modified array after traps cells so that |
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1086 // the code for traps cells works. |
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1087 DataLayout *dp = data_layout_at(data_size + extra_size); |
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1088 |
8615 | 1089 int arg_size = method()->size_of_parameters(); |
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1090 dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); |
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1091 |
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1092 int arg_data_size = DataLayout::compute_size_in_bytes(arg_size+1); |
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1093 object_size += extra_size + arg_data_size; |
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1094 |
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1095 int args_cell = ParametersTypeData::compute_cell_count(method()); |
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1096 // If we are profiling parameters, we reserver an area near the end |
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1097 // of the MDO after the slots for bytecodes (because there's no bci |
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1098 // for method entry so they don't fit with the framework for the |
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1099 // profiling of bytecodes). We store the offset within the MDO of |
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1100 // this area (or -1 if no parameter is profiled) |
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1101 if (args_cell > 0) { |
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1102 object_size += DataLayout::compute_size_in_bytes(args_cell); |
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1103 _parameters_type_data_di = data_size + extra_size + arg_data_size; |
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1104 DataLayout *dp = data_layout_at(data_size + extra_size + arg_data_size); |
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1105 dp->initialize(DataLayout::parameters_type_data_tag, 0, args_cell); |
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1106 } else { |
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1107 _parameters_type_data_di = -1; |
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1108 } |
0 | 1109 |
1110 // Set an initial hint. Don't use set_hint_di() because | |
1111 // first_di() may be out of bounds if data_size is 0. | |
1112 // In that situation, _hint_di is never used, but at | |
1113 // least well-defined. | |
1114 _hint_di = first_di(); | |
1115 | |
1116 post_initialize(&stream); | |
1117 | |
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1118 assert(object_size == compute_allocation_size_in_bytes(methodHandle(_method)), "MethodData: computed size != initialized size"); |
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1119 set_size(object_size); |
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1120 } |
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1121 |
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1122 void MethodData::init() { |
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1123 _invocation_counter.init(); |
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1124 _backedge_counter.init(); |
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1125 _invocation_counter_start = 0; |
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1126 _backedge_counter_start = 0; |
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1127 _num_loops = 0; |
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1128 _num_blocks = 0; |
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1129 _highest_comp_level = 0; |
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1130 _highest_osr_comp_level = 0; |
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1131 _would_profile = true; |
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1132 |
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1133 // Initialize flags and trap history. |
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1134 _nof_decompiles = 0; |
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1135 _nof_overflow_recompiles = 0; |
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1136 _nof_overflow_traps = 0; |
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1137 clear_escape_info(); |
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1138 assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); |
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1139 Copy::zero_to_words((HeapWord*) &_trap_hist, |
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1140 sizeof(_trap_hist) / sizeof(HeapWord)); |
0 | 1141 } |
1142 | |
1143 // Get a measure of how much mileage the method has on it. | |
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1144 int MethodData::mileage_of(Method* method) { |
0 | 1145 int mileage = 0; |
1783 | 1146 if (TieredCompilation) { |
1147 mileage = MAX2(method->invocation_count(), method->backedge_count()); | |
1148 } else { | |
1149 int iic = method->interpreter_invocation_count(); | |
1150 if (mileage < iic) mileage = iic; | |
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1151 MethodCounters* mcs = method->method_counters(); |
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1152 if (mcs != NULL) { |
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1153 InvocationCounter* ic = mcs->invocation_counter(); |
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1154 InvocationCounter* bc = mcs->backedge_counter(); |
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1155 int icval = ic->count(); |
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1156 if (ic->carry()) icval += CompileThreshold; |
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1157 if (mileage < icval) mileage = icval; |
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1158 int bcval = bc->count(); |
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1159 if (bc->carry()) bcval += CompileThreshold; |
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1160 if (mileage < bcval) mileage = bcval; |
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1161 } |
1783 | 1162 } |
0 | 1163 return mileage; |
1164 } | |
1165 | |
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1166 bool MethodData::is_mature() const { |
1783 | 1167 return CompilationPolicy::policy()->is_mature(_method); |
0 | 1168 } |
1169 | |
1170 // Translate a bci to its corresponding data index (di). | |
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1171 address MethodData::bci_to_dp(int bci) { |
0 | 1172 ResourceMark rm; |
1173 ProfileData* data = data_before(bci); | |
1174 ProfileData* prev = NULL; | |
1175 for ( ; is_valid(data); data = next_data(data)) { | |
1176 if (data->bci() >= bci) { | |
1177 if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); | |
1178 else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); | |
1179 return data->dp(); | |
1180 } | |
1181 prev = data; | |
1182 } | |
1183 return (address)limit_data_position(); | |
1184 } | |
1185 | |
1186 // Translate a bci to its corresponding data, or NULL. | |
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1187 ProfileData* MethodData::bci_to_data(int bci) { |
0 | 1188 ProfileData* data = data_before(bci); |
1189 for ( ; is_valid(data); data = next_data(data)) { | |
1190 if (data->bci() == bci) { | |
1191 set_hint_di(dp_to_di(data->dp())); | |
1192 return data; | |
1193 } else if (data->bci() > bci) { | |
1194 break; | |
1195 } | |
1196 } | |
1197 return bci_to_extra_data(bci, false); | |
1198 } | |
1199 | |
1200 // Translate a bci to its corresponding extra data, or NULL. | |
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1201 ProfileData* MethodData::bci_to_extra_data(int bci, bool create_if_missing) { |
0 | 1202 DataLayout* dp = extra_data_base(); |
1203 DataLayout* end = extra_data_limit(); | |
1204 DataLayout* avail = NULL; | |
1205 for (; dp < end; dp = next_extra(dp)) { | |
1206 // No need for "OrderAccess::load_acquire" ops, | |
1207 // since the data structure is monotonic. | |
1208 if (dp->tag() == DataLayout::no_tag) break; | |
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1209 if (dp->tag() == DataLayout::arg_info_data_tag) { |
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1210 dp = end; // ArgInfoData is at the end of extra data section. |
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1211 break; |
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1212 } |
0 | 1213 if (dp->bci() == bci) { |
1214 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
1215 return new BitData(dp); | |
1216 } | |
1217 } | |
1218 if (create_if_missing && dp < end) { | |
1219 // Allocate this one. There is no mutual exclusion, | |
1220 // so two threads could allocate different BCIs to the | |
1221 // same data layout. This means these extra data | |
1222 // records, like most other MDO contents, must not be | |
1223 // trusted too much. | |
1224 DataLayout temp; | |
1225 temp.initialize(DataLayout::bit_data_tag, bci, 0); | |
1226 dp->release_set_header(temp.header()); | |
1227 assert(dp->tag() == DataLayout::bit_data_tag, "sane"); | |
1228 //NO: assert(dp->bci() == bci, "no concurrent allocation"); | |
1229 return new BitData(dp); | |
1230 } | |
1231 return NULL; | |
1232 } | |
1233 | |
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1234 ArgInfoData *MethodData::arg_info() { |
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1235 DataLayout* dp = extra_data_base(); |
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1236 DataLayout* end = extra_data_limit(); |
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1237 for (; dp < end; dp = next_extra(dp)) { |
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1238 if (dp->tag() == DataLayout::arg_info_data_tag) |
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1239 return new ArgInfoData(dp); |
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1240 } |
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1241 return NULL; |
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1242 } |
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1243 |
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1244 // Printing |
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1245 |
0 | 1246 #ifndef PRODUCT |
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1247 |
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1248 void MethodData::print_on(outputStream* st) const { |
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1249 assert(is_methodData(), "should be method data"); |
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1250 st->print("method data for "); |
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1251 method()->print_value_on(st); |
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1252 st->cr(); |
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1253 print_data_on(st); |
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1254 } |
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1255 |
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1256 #endif //PRODUCT |
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1257 |
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1258 void MethodData::print_value_on(outputStream* st) const { |
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1259 assert(is_methodData(), "should be method data"); |
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1260 st->print("method data for "); |
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1261 method()->print_value_on(st); |
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1262 } |
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1263 |
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1264 #ifndef PRODUCT |
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1265 void MethodData::print_data_on(outputStream* st) const { |
0 | 1266 ResourceMark rm; |
1267 ProfileData* data = first_data(); | |
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1268 if (_parameters_type_data_di != -1) { |
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1269 parameters_type_data()->print_data_on(st); |
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1270 } |
0 | 1271 for ( ; is_valid(data); data = next_data(data)) { |
1272 st->print("%d", dp_to_di(data->dp())); | |
1273 st->fill_to(6); | |
1274 data->print_data_on(st); | |
1275 } | |
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1276 st->print_cr("--- Extra data:"); |
0 | 1277 DataLayout* dp = extra_data_base(); |
1278 DataLayout* end = extra_data_limit(); | |
1279 for (; dp < end; dp = next_extra(dp)) { | |
1280 // No need for "OrderAccess::load_acquire" ops, | |
1281 // since the data structure is monotonic. | |
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1282 if (dp->tag() == DataLayout::no_tag) continue; |
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1283 if (dp->tag() == DataLayout::bit_data_tag) { |
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1284 data = new BitData(dp); |
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1285 } else { |
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1286 assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); |
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1287 data = new ArgInfoData(dp); |
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1288 dp = end; // ArgInfoData is at the end of extra data section. |
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1289 } |
0 | 1290 st->print("%d", dp_to_di(data->dp())); |
1291 st->fill_to(6); | |
1292 data->print_data_on(st); | |
1293 } | |
1294 } | |
1295 #endif | |
1296 | |
7956 | 1297 #if INCLUDE_SERVICES |
1298 // Size Statistics | |
1299 void MethodData::collect_statistics(KlassSizeStats *sz) const { | |
1300 int n = sz->count(this); | |
1301 sz->_method_data_bytes += n; | |
1302 sz->_method_all_bytes += n; | |
1303 sz->_rw_bytes += n; | |
1304 } | |
1305 #endif // INCLUDE_SERVICES | |
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1306 |
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1307 // Verification |
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1308 |
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1309 void MethodData::verify_on(outputStream* st) { |
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1310 guarantee(is_methodData(), "object must be method data"); |
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1311 // guarantee(m->is_perm(), "should be in permspace"); |
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1312 this->verify_data_on(st); |
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1313 } |
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1314 |
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1315 void MethodData::verify_data_on(outputStream* st) { |
0 | 1316 NEEDS_CLEANUP; |
1317 // not yet implemented. | |
1318 } | |
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1319 |
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1320 bool MethodData::profile_jsr292(methodHandle m, int bci) { |
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1321 if (m->is_compiled_lambda_form()) { |
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1322 return true; |
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1323 } |
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1324 |
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1325 Bytecode_invoke inv(m , bci); |
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1326 return inv.is_invokedynamic() || inv.is_invokehandle(); |
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1327 } |
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1328 |
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1329 int MethodData::profile_arguments_flag() { |
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1330 return TypeProfileLevel % 10; |
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1331 } |
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1332 |
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1333 bool MethodData::profile_arguments() { |
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1334 return profile_arguments_flag() > no_type_profile && profile_arguments_flag() <= type_profile_all; |
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1335 } |
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|
1336 |
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1337 bool MethodData::profile_arguments_jsr292_only() { |
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1338 return profile_arguments_flag() == type_profile_jsr292; |
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1339 } |
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|
1340 |
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1341 bool MethodData::profile_all_arguments() { |
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1342 return profile_arguments_flag() == type_profile_all; |
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1343 } |
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|
1344 |
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1345 bool MethodData::profile_arguments_for_invoke(methodHandle m, int bci) { |
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1346 if (!profile_arguments()) { |
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1347 return false; |
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|
1348 } |
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|
1349 |
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1350 if (profile_all_arguments()) { |
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1351 return true; |
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|
1352 } |
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|
1353 |
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1354 assert(profile_arguments_jsr292_only(), "inconsistent"); |
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1355 return profile_jsr292(m, bci); |
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|
1356 } |
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|
1357 |
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1358 int MethodData::profile_return_flag() { |
12962
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1359 return (TypeProfileLevel % 100) / 10; |
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1360 } |
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|
1361 |
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1362 bool MethodData::profile_return() { |
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1363 return profile_return_flag() > no_type_profile && profile_return_flag() <= type_profile_all; |
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1364 } |
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|
1365 |
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1366 bool MethodData::profile_return_jsr292_only() { |
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1367 return profile_return_flag() == type_profile_jsr292; |
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1368 } |
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|
1369 |
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1370 bool MethodData::profile_all_return() { |
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1371 return profile_return_flag() == type_profile_all; |
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|
1372 } |
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|
1373 |
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1374 bool MethodData::profile_return_for_invoke(methodHandle m, int bci) { |
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|
1375 if (!profile_return()) { |
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|
1376 return false; |
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|
1377 } |
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|
1378 |
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|
1379 if (profile_all_return()) { |
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|
1380 return true; |
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|
1381 } |
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|
1382 |
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1383 assert(profile_return_jsr292_only(), "inconsistent"); |
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1384 return profile_jsr292(m, bci); |
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1385 } |
12962
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|
1386 |
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|
1387 int MethodData::profile_parameters_flag() { |
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|
1388 return TypeProfileLevel / 100; |
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|
1389 } |
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|
1390 |
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|
1391 bool MethodData::profile_parameters() { |
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|
1392 return profile_parameters_flag() > no_type_profile && profile_parameters_flag() <= type_profile_all; |
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|
1393 } |
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|
1394 |
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|
1395 bool MethodData::profile_parameters_jsr292_only() { |
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|
1396 return profile_parameters_flag() == type_profile_jsr292; |
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|
1397 } |
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|
1398 |
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|
1399 bool MethodData::profile_all_parameters() { |
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|
1400 return profile_parameters_flag() == type_profile_all; |
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|
1401 } |
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|
1402 |
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|
1403 bool MethodData::profile_parameters_for_method(methodHandle m) { |
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|
1404 if (!profile_parameters()) { |
5ccbab1c69f3
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|
1405 return false; |
5ccbab1c69f3
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|
1406 } |
5ccbab1c69f3
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|
1407 |
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|
1408 if (profile_all_parameters()) { |
5ccbab1c69f3
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|
1409 return true; |
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|
1410 } |
5ccbab1c69f3
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|
1411 |
5ccbab1c69f3
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|
1412 assert(profile_parameters_jsr292_only(), "inconsistent"); |
5ccbab1c69f3
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|
1413 return m->is_compiled_lambda_form(); |
5ccbab1c69f3
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|
1414 } |