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annotate src/share/vm/opto/callGenerator.cpp @ 3500:6111c168756f
IdealGraphPrinter can now output bytecodes, enabled by default (GraalOptions.PrintIdealGraphBytecodes)
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Mon, 08 Aug 2011 15:19:09 +0200 |
parents | f56542cb325a |
children | fdb992d83a87 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2011, 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 "ci/bcEscapeAnalyzer.hpp" | |
27 #include "ci/ciCPCache.hpp" | |
28 #include "ci/ciMethodHandle.hpp" | |
29 #include "classfile/javaClasses.hpp" | |
30 #include "compiler/compileLog.hpp" | |
31 #include "opto/addnode.hpp" | |
32 #include "opto/callGenerator.hpp" | |
33 #include "opto/callnode.hpp" | |
34 #include "opto/cfgnode.hpp" | |
35 #include "opto/connode.hpp" | |
36 #include "opto/parse.hpp" | |
37 #include "opto/rootnode.hpp" | |
38 #include "opto/runtime.hpp" | |
39 #include "opto/subnode.hpp" | |
0 | 40 |
41 CallGenerator::CallGenerator(ciMethod* method) { | |
42 _method = method; | |
43 } | |
44 | |
45 // Utility function. | |
46 const TypeFunc* CallGenerator::tf() const { | |
47 return TypeFunc::make(method()); | |
48 } | |
49 | |
50 //-----------------------------ParseGenerator--------------------------------- | |
51 // Internal class which handles all direct bytecode traversal. | |
52 class ParseGenerator : public InlineCallGenerator { | |
53 private: | |
54 bool _is_osr; | |
55 float _expected_uses; | |
56 | |
57 public: | |
58 ParseGenerator(ciMethod* method, float expected_uses, bool is_osr = false) | |
59 : InlineCallGenerator(method) | |
60 { | |
61 _is_osr = is_osr; | |
62 _expected_uses = expected_uses; | |
63 assert(can_parse(method, is_osr), "parse must be possible"); | |
64 } | |
65 | |
66 // Can we build either an OSR or a regular parser for this method? | |
67 static bool can_parse(ciMethod* method, int is_osr = false); | |
68 | |
69 virtual bool is_parse() const { return true; } | |
70 virtual JVMState* generate(JVMState* jvms); | |
71 int is_osr() { return _is_osr; } | |
72 | |
73 }; | |
74 | |
75 JVMState* ParseGenerator::generate(JVMState* jvms) { | |
76 Compile* C = Compile::current(); | |
77 | |
78 if (is_osr()) { | |
79 // The JVMS for a OSR has a single argument (see its TypeFunc). | |
80 assert(jvms->depth() == 1, "no inline OSR"); | |
81 } | |
82 | |
83 if (C->failing()) { | |
84 return NULL; // bailing out of the compile; do not try to parse | |
85 } | |
86 | |
87 Parse parser(jvms, method(), _expected_uses); | |
88 // Grab signature for matching/allocation | |
89 #ifdef ASSERT | |
90 if (parser.tf() != (parser.depth() == 1 ? C->tf() : tf())) { | |
91 MutexLockerEx ml(Compile_lock, Mutex::_no_safepoint_check_flag); | |
92 assert(C->env()->system_dictionary_modification_counter_changed(), | |
93 "Must invalidate if TypeFuncs differ"); | |
94 } | |
95 #endif | |
96 | |
97 GraphKit& exits = parser.exits(); | |
98 | |
99 if (C->failing()) { | |
100 while (exits.pop_exception_state() != NULL) ; | |
101 return NULL; | |
102 } | |
103 | |
104 assert(exits.jvms()->same_calls_as(jvms), "sanity"); | |
105 | |
106 // Simply return the exit state of the parser, | |
107 // augmented by any exceptional states. | |
108 return exits.transfer_exceptions_into_jvms(); | |
109 } | |
110 | |
111 //---------------------------DirectCallGenerator------------------------------ | |
112 // Internal class which handles all out-of-line calls w/o receiver type checks. | |
113 class DirectCallGenerator : public CallGenerator { | |
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114 private: |
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115 CallStaticJavaNode* _call_node; |
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116 // Force separate memory and I/O projections for the exceptional |
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117 // paths to facilitate late inlinig. |
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118 bool _separate_io_proj; |
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119 |
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120 public: |
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121 DirectCallGenerator(ciMethod* method, bool separate_io_proj) |
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122 : CallGenerator(method), |
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123 _separate_io_proj(separate_io_proj) |
0 | 124 { |
125 } | |
126 virtual JVMState* generate(JVMState* jvms); | |
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127 |
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128 CallStaticJavaNode* call_node() const { return _call_node; } |
0 | 129 }; |
130 | |
131 JVMState* DirectCallGenerator::generate(JVMState* jvms) { | |
132 GraphKit kit(jvms); | |
133 bool is_static = method()->is_static(); | |
134 address target = is_static ? SharedRuntime::get_resolve_static_call_stub() | |
135 : SharedRuntime::get_resolve_opt_virtual_call_stub(); | |
136 | |
137 if (kit.C->log() != NULL) { | |
138 kit.C->log()->elem("direct_call bci='%d'", jvms->bci()); | |
139 } | |
140 | |
141 CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), target, method(), kit.bci()); | |
142 if (!is_static) { | |
143 // Make an explicit receiver null_check as part of this call. | |
144 // Since we share a map with the caller, his JVMS gets adjusted. | |
145 kit.null_check_receiver(method()); | |
146 if (kit.stopped()) { | |
147 // And dump it back to the caller, decorated with any exceptions: | |
148 return kit.transfer_exceptions_into_jvms(); | |
149 } | |
150 // Mark the call node as virtual, sort of: | |
151 call->set_optimized_virtual(true); | |
1265 | 152 if (method()->is_method_handle_invoke()) { |
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153 call->set_method_handle_invoke(true); |
1265 | 154 kit.C->set_has_method_handle_invokes(true); |
155 } | |
0 | 156 } |
157 kit.set_arguments_for_java_call(call); | |
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158 kit.set_edges_for_java_call(call, false, _separate_io_proj); |
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159 Node* ret = kit.set_results_for_java_call(call, _separate_io_proj); |
0 | 160 kit.push_node(method()->return_type()->basic_type(), ret); |
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161 _call_node = call; // Save the call node in case we need it later |
0 | 162 return kit.transfer_exceptions_into_jvms(); |
163 } | |
164 | |
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165 //---------------------------DynamicCallGenerator----------------------------- |
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166 // Internal class which handles all out-of-line invokedynamic calls. |
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167 class DynamicCallGenerator : public CallGenerator { |
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168 public: |
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169 DynamicCallGenerator(ciMethod* method) |
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170 : CallGenerator(method) |
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171 { |
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172 } |
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173 virtual JVMState* generate(JVMState* jvms); |
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174 }; |
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175 |
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176 JVMState* DynamicCallGenerator::generate(JVMState* jvms) { |
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177 GraphKit kit(jvms); |
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178 |
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179 if (kit.C->log() != NULL) { |
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180 kit.C->log()->elem("dynamic_call bci='%d'", jvms->bci()); |
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181 } |
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182 |
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183 // Get the constant pool cache from the caller class. |
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184 ciMethod* caller_method = jvms->method(); |
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185 ciBytecodeStream str(caller_method); |
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186 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
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187 assert(str.cur_bc() == Bytecodes::_invokedynamic, "wrong place to issue a dynamic call!"); |
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188 ciCPCache* cpcache = str.get_cpcache(); |
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189 |
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190 // Get the offset of the CallSite from the constant pool cache |
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191 // pointer. |
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192 int index = str.get_method_index(); |
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193 size_t call_site_offset = cpcache->get_f1_offset(index); |
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194 |
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195 // Load the CallSite object from the constant pool cache. |
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196 const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
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197 Node* cpcache_adr = kit.makecon(cpcache_ptr); |
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198 Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
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199 Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
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200 |
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201 // Load the target MethodHandle from the CallSite object. |
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202 Node* target_mh_adr = kit.basic_plus_adr(call_site, call_site, java_lang_invoke_CallSite::target_offset_in_bytes()); |
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203 Node* target_mh = kit.make_load(kit.control(), target_mh_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
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204 |
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205 address resolve_stub = SharedRuntime::get_resolve_opt_virtual_call_stub(); |
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206 |
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207 CallStaticJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), resolve_stub, method(), kit.bci()); |
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208 // invokedynamic is treated as an optimized invokevirtual. |
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209 call->set_optimized_virtual(true); |
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210 // Take extra care (in the presence of argument motion) not to trash the SP: |
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211 call->set_method_handle_invoke(true); |
1265 | 212 kit.C->set_has_method_handle_invokes(true); |
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213 |
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214 // Pass the target MethodHandle as first argument and shift the |
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215 // other arguments. |
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216 call->init_req(0 + TypeFunc::Parms, target_mh); |
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217 uint nargs = call->method()->arg_size(); |
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218 for (uint i = 1; i < nargs; i++) { |
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219 Node* arg = kit.argument(i - 1); |
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220 call->init_req(i + TypeFunc::Parms, arg); |
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221 } |
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222 |
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223 kit.set_edges_for_java_call(call); |
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224 Node* ret = kit.set_results_for_java_call(call); |
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225 kit.push_node(method()->return_type()->basic_type(), ret); |
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226 return kit.transfer_exceptions_into_jvms(); |
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227 } |
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228 |
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229 //--------------------------VirtualCallGenerator------------------------------ |
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230 // Internal class which handles all out-of-line calls checking receiver type. |
0 | 231 class VirtualCallGenerator : public CallGenerator { |
232 private: | |
233 int _vtable_index; | |
234 public: | |
235 VirtualCallGenerator(ciMethod* method, int vtable_index) | |
236 : CallGenerator(method), _vtable_index(vtable_index) | |
237 { | |
238 assert(vtable_index == methodOopDesc::invalid_vtable_index || | |
239 vtable_index >= 0, "either invalid or usable"); | |
240 } | |
241 virtual bool is_virtual() const { return true; } | |
242 virtual JVMState* generate(JVMState* jvms); | |
243 }; | |
244 | |
245 JVMState* VirtualCallGenerator::generate(JVMState* jvms) { | |
246 GraphKit kit(jvms); | |
247 Node* receiver = kit.argument(0); | |
248 | |
249 if (kit.C->log() != NULL) { | |
250 kit.C->log()->elem("virtual_call bci='%d'", jvms->bci()); | |
251 } | |
252 | |
253 // If the receiver is a constant null, do not torture the system | |
254 // by attempting to call through it. The compile will proceed | |
255 // correctly, but may bail out in final_graph_reshaping, because | |
256 // the call instruction will have a seemingly deficient out-count. | |
257 // (The bailout says something misleading about an "infinite loop".) | |
258 if (kit.gvn().type(receiver)->higher_equal(TypePtr::NULL_PTR)) { | |
259 kit.inc_sp(method()->arg_size()); // restore arguments | |
260 kit.uncommon_trap(Deoptimization::Reason_null_check, | |
261 Deoptimization::Action_none, | |
262 NULL, "null receiver"); | |
263 return kit.transfer_exceptions_into_jvms(); | |
264 } | |
265 | |
266 // Ideally we would unconditionally do a null check here and let it | |
267 // be converted to an implicit check based on profile information. | |
268 // However currently the conversion to implicit null checks in | |
269 // Block::implicit_null_check() only looks for loads and stores, not calls. | |
270 ciMethod *caller = kit.method(); | |
271 ciMethodData *caller_md = (caller == NULL) ? NULL : caller->method_data(); | |
272 if (!UseInlineCaches || !ImplicitNullChecks || | |
273 ((ImplicitNullCheckThreshold > 0) && caller_md && | |
274 (caller_md->trap_count(Deoptimization::Reason_null_check) | |
275 >= (uint)ImplicitNullCheckThreshold))) { | |
276 // Make an explicit receiver null_check as part of this call. | |
277 // Since we share a map with the caller, his JVMS gets adjusted. | |
278 receiver = kit.null_check_receiver(method()); | |
279 if (kit.stopped()) { | |
280 // And dump it back to the caller, decorated with any exceptions: | |
281 return kit.transfer_exceptions_into_jvms(); | |
282 } | |
283 } | |
284 | |
285 assert(!method()->is_static(), "virtual call must not be to static"); | |
286 assert(!method()->is_final(), "virtual call should not be to final"); | |
287 assert(!method()->is_private(), "virtual call should not be to private"); | |
288 assert(_vtable_index == methodOopDesc::invalid_vtable_index || !UseInlineCaches, | |
289 "no vtable calls if +UseInlineCaches "); | |
290 address target = SharedRuntime::get_resolve_virtual_call_stub(); | |
291 // Normal inline cache used for call | |
292 CallDynamicJavaNode *call = new (kit.C, tf()->domain()->cnt()) CallDynamicJavaNode(tf(), target, method(), _vtable_index, kit.bci()); | |
293 kit.set_arguments_for_java_call(call); | |
294 kit.set_edges_for_java_call(call); | |
295 Node* ret = kit.set_results_for_java_call(call); | |
296 kit.push_node(method()->return_type()->basic_type(), ret); | |
297 | |
298 // Represent the effect of an implicit receiver null_check | |
299 // as part of this call. Since we share a map with the caller, | |
300 // his JVMS gets adjusted. | |
301 kit.cast_not_null(receiver); | |
302 return kit.transfer_exceptions_into_jvms(); | |
303 } | |
304 | |
305 bool ParseGenerator::can_parse(ciMethod* m, int entry_bci) { | |
306 // Certain methods cannot be parsed at all: | |
307 if (!m->can_be_compiled()) return false; | |
308 if (!m->has_balanced_monitors()) return false; | |
309 if (m->get_flow_analysis()->failing()) return false; | |
310 | |
311 // (Methods may bail out for other reasons, after the parser is run. | |
312 // We try to avoid this, but if forced, we must return (Node*)NULL. | |
313 // The user of the CallGenerator must check for this condition.) | |
314 return true; | |
315 } | |
316 | |
317 CallGenerator* CallGenerator::for_inline(ciMethod* m, float expected_uses) { | |
318 if (!ParseGenerator::can_parse(m)) return NULL; | |
319 return new ParseGenerator(m, expected_uses); | |
320 } | |
321 | |
322 // As a special case, the JVMS passed to this CallGenerator is | |
323 // for the method execution already in progress, not just the JVMS | |
324 // of the caller. Thus, this CallGenerator cannot be mixed with others! | |
325 CallGenerator* CallGenerator::for_osr(ciMethod* m, int osr_bci) { | |
326 if (!ParseGenerator::can_parse(m, true)) return NULL; | |
327 float past_uses = m->interpreter_invocation_count(); | |
328 float expected_uses = past_uses; | |
329 return new ParseGenerator(m, expected_uses, true); | |
330 } | |
331 | |
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332 CallGenerator* CallGenerator::for_direct_call(ciMethod* m, bool separate_io_proj) { |
0 | 333 assert(!m->is_abstract(), "for_direct_call mismatch"); |
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334 return new DirectCallGenerator(m, separate_io_proj); |
0 | 335 } |
336 | |
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337 CallGenerator* CallGenerator::for_dynamic_call(ciMethod* m) { |
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338 assert(m->is_method_handle_invoke(), "for_dynamic_call mismatch"); |
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339 return new DynamicCallGenerator(m); |
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340 } |
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341 |
0 | 342 CallGenerator* CallGenerator::for_virtual_call(ciMethod* m, int vtable_index) { |
343 assert(!m->is_static(), "for_virtual_call mismatch"); | |
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344 assert(!m->is_method_handle_invoke(), "should be a direct call"); |
0 | 345 return new VirtualCallGenerator(m, vtable_index); |
346 } | |
347 | |
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348 // Allow inlining decisions to be delayed |
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349 class LateInlineCallGenerator : public DirectCallGenerator { |
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350 CallGenerator* _inline_cg; |
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351 |
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352 public: |
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353 LateInlineCallGenerator(ciMethod* method, CallGenerator* inline_cg) : |
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354 DirectCallGenerator(method, true), _inline_cg(inline_cg) {} |
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355 |
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356 virtual bool is_late_inline() const { return true; } |
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357 |
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358 // Convert the CallStaticJava into an inline |
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359 virtual void do_late_inline(); |
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360 |
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361 JVMState* generate(JVMState* jvms) { |
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362 // Record that this call site should be revisited once the main |
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363 // parse is finished. |
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364 Compile::current()->add_late_inline(this); |
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365 |
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366 // Emit the CallStaticJava and request separate projections so |
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367 // that the late inlining logic can distinguish between fall |
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368 // through and exceptional uses of the memory and io projections |
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369 // as is done for allocations and macro expansion. |
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370 return DirectCallGenerator::generate(jvms); |
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371 } |
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372 |
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373 }; |
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374 |
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375 |
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376 void LateInlineCallGenerator::do_late_inline() { |
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377 // Can't inline it |
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378 if (call_node() == NULL || call_node()->outcnt() == 0 || |
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379 call_node()->in(0) == NULL || call_node()->in(0)->is_top()) |
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380 return; |
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381 |
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382 CallStaticJavaNode* call = call_node(); |
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383 |
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384 // Make a clone of the JVMState that appropriate to use for driving a parse |
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385 Compile* C = Compile::current(); |
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386 JVMState* jvms = call->jvms()->clone_shallow(C); |
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387 uint size = call->req(); |
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388 SafePointNode* map = new (C, size) SafePointNode(size, jvms); |
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389 for (uint i1 = 0; i1 < size; i1++) { |
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390 map->init_req(i1, call->in(i1)); |
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391 } |
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392 |
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393 // Make sure the state is a MergeMem for parsing. |
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394 if (!map->in(TypeFunc::Memory)->is_MergeMem()) { |
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395 map->set_req(TypeFunc::Memory, MergeMemNode::make(C, map->in(TypeFunc::Memory))); |
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396 } |
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397 |
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398 // Make enough space for the expression stack and transfer the incoming arguments |
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399 int nargs = method()->arg_size(); |
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400 jvms->set_map(map); |
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401 map->ensure_stack(jvms, jvms->method()->max_stack()); |
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402 if (nargs > 0) { |
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403 for (int i1 = 0; i1 < nargs; i1++) { |
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404 map->set_req(i1 + jvms->argoff(), call->in(TypeFunc::Parms + i1)); |
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405 } |
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406 } |
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407 |
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408 CompileLog* log = C->log(); |
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409 if (log != NULL) { |
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410 log->head("late_inline method='%d'", log->identify(method())); |
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411 JVMState* p = jvms; |
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412 while (p != NULL) { |
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413 log->elem("jvms bci='%d' method='%d'", p->bci(), log->identify(p->method())); |
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414 p = p->caller(); |
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415 } |
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416 log->tail("late_inline"); |
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417 } |
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418 |
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419 // Setup default node notes to be picked up by the inlining |
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420 Node_Notes* old_nn = C->default_node_notes(); |
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421 if (old_nn != NULL) { |
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422 Node_Notes* entry_nn = old_nn->clone(C); |
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423 entry_nn->set_jvms(jvms); |
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424 C->set_default_node_notes(entry_nn); |
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425 } |
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426 |
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427 // Now perform the inling using the synthesized JVMState |
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428 JVMState* new_jvms = _inline_cg->generate(jvms); |
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429 if (new_jvms == NULL) return; // no change |
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430 if (C->failing()) return; |
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431 |
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432 // Capture any exceptional control flow |
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433 GraphKit kit(new_jvms); |
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434 |
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435 // Find the result object |
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436 Node* result = C->top(); |
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437 int result_size = method()->return_type()->size(); |
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438 if (result_size != 0 && !kit.stopped()) { |
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439 result = (result_size == 1) ? kit.pop() : kit.pop_pair(); |
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440 } |
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441 |
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442 kit.replace_call(call, result); |
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443 } |
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444 |
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445 |
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446 CallGenerator* CallGenerator::for_late_inline(ciMethod* method, CallGenerator* inline_cg) { |
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447 return new LateInlineCallGenerator(method, inline_cg); |
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448 } |
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449 |
0 | 450 |
451 //---------------------------WarmCallGenerator-------------------------------- | |
452 // Internal class which handles initial deferral of inlining decisions. | |
453 class WarmCallGenerator : public CallGenerator { | |
454 WarmCallInfo* _call_info; | |
455 CallGenerator* _if_cold; | |
456 CallGenerator* _if_hot; | |
457 bool _is_virtual; // caches virtuality of if_cold | |
458 bool _is_inline; // caches inline-ness of if_hot | |
459 | |
460 public: | |
461 WarmCallGenerator(WarmCallInfo* ci, | |
462 CallGenerator* if_cold, | |
463 CallGenerator* if_hot) | |
464 : CallGenerator(if_cold->method()) | |
465 { | |
466 assert(method() == if_hot->method(), "consistent choices"); | |
467 _call_info = ci; | |
468 _if_cold = if_cold; | |
469 _if_hot = if_hot; | |
470 _is_virtual = if_cold->is_virtual(); | |
471 _is_inline = if_hot->is_inline(); | |
472 } | |
473 | |
474 virtual bool is_inline() const { return _is_inline; } | |
475 virtual bool is_virtual() const { return _is_virtual; } | |
476 virtual bool is_deferred() const { return true; } | |
477 | |
478 virtual JVMState* generate(JVMState* jvms); | |
479 }; | |
480 | |
481 | |
482 CallGenerator* CallGenerator::for_warm_call(WarmCallInfo* ci, | |
483 CallGenerator* if_cold, | |
484 CallGenerator* if_hot) { | |
485 return new WarmCallGenerator(ci, if_cold, if_hot); | |
486 } | |
487 | |
488 JVMState* WarmCallGenerator::generate(JVMState* jvms) { | |
489 Compile* C = Compile::current(); | |
490 if (C->log() != NULL) { | |
491 C->log()->elem("warm_call bci='%d'", jvms->bci()); | |
492 } | |
493 jvms = _if_cold->generate(jvms); | |
494 if (jvms != NULL) { | |
495 Node* m = jvms->map()->control(); | |
496 if (m->is_CatchProj()) m = m->in(0); else m = C->top(); | |
497 if (m->is_Catch()) m = m->in(0); else m = C->top(); | |
498 if (m->is_Proj()) m = m->in(0); else m = C->top(); | |
499 if (m->is_CallJava()) { | |
500 _call_info->set_call(m->as_Call()); | |
501 _call_info->set_hot_cg(_if_hot); | |
502 #ifndef PRODUCT | |
503 if (PrintOpto || PrintOptoInlining) { | |
504 tty->print_cr("Queueing for warm inlining at bci %d:", jvms->bci()); | |
505 tty->print("WCI: "); | |
506 _call_info->print(); | |
507 } | |
508 #endif | |
509 _call_info->set_heat(_call_info->compute_heat()); | |
510 C->set_warm_calls(_call_info->insert_into(C->warm_calls())); | |
511 } | |
512 } | |
513 return jvms; | |
514 } | |
515 | |
516 void WarmCallInfo::make_hot() { | |
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517 Unimplemented(); |
0 | 518 } |
519 | |
520 void WarmCallInfo::make_cold() { | |
521 // No action: Just dequeue. | |
522 } | |
523 | |
524 | |
525 //------------------------PredictedCallGenerator------------------------------ | |
526 // Internal class which handles all out-of-line calls checking receiver type. | |
527 class PredictedCallGenerator : public CallGenerator { | |
528 ciKlass* _predicted_receiver; | |
529 CallGenerator* _if_missed; | |
530 CallGenerator* _if_hit; | |
531 float _hit_prob; | |
532 | |
533 public: | |
534 PredictedCallGenerator(ciKlass* predicted_receiver, | |
535 CallGenerator* if_missed, | |
536 CallGenerator* if_hit, float hit_prob) | |
537 : CallGenerator(if_missed->method()) | |
538 { | |
539 // The call profile data may predict the hit_prob as extreme as 0 or 1. | |
540 // Remove the extremes values from the range. | |
541 if (hit_prob > PROB_MAX) hit_prob = PROB_MAX; | |
542 if (hit_prob < PROB_MIN) hit_prob = PROB_MIN; | |
543 | |
544 _predicted_receiver = predicted_receiver; | |
545 _if_missed = if_missed; | |
546 _if_hit = if_hit; | |
547 _hit_prob = hit_prob; | |
548 } | |
549 | |
550 virtual bool is_virtual() const { return true; } | |
551 virtual bool is_inline() const { return _if_hit->is_inline(); } | |
552 virtual bool is_deferred() const { return _if_hit->is_deferred(); } | |
553 | |
554 virtual JVMState* generate(JVMState* jvms); | |
555 }; | |
556 | |
557 | |
558 CallGenerator* CallGenerator::for_predicted_call(ciKlass* predicted_receiver, | |
559 CallGenerator* if_missed, | |
560 CallGenerator* if_hit, | |
561 float hit_prob) { | |
562 return new PredictedCallGenerator(predicted_receiver, if_missed, if_hit, hit_prob); | |
563 } | |
564 | |
565 | |
566 JVMState* PredictedCallGenerator::generate(JVMState* jvms) { | |
567 GraphKit kit(jvms); | |
568 PhaseGVN& gvn = kit.gvn(); | |
569 // We need an explicit receiver null_check before checking its type. | |
570 // We share a map with the caller, so his JVMS gets adjusted. | |
571 Node* receiver = kit.argument(0); | |
572 | |
573 CompileLog* log = kit.C->log(); | |
574 if (log != NULL) { | |
575 log->elem("predicted_call bci='%d' klass='%d'", | |
576 jvms->bci(), log->identify(_predicted_receiver)); | |
577 } | |
578 | |
579 receiver = kit.null_check_receiver(method()); | |
580 if (kit.stopped()) { | |
581 return kit.transfer_exceptions_into_jvms(); | |
582 } | |
583 | |
584 Node* exact_receiver = receiver; // will get updated in place... | |
585 Node* slow_ctl = kit.type_check_receiver(receiver, | |
586 _predicted_receiver, _hit_prob, | |
587 &exact_receiver); | |
588 | |
589 SafePointNode* slow_map = NULL; | |
590 JVMState* slow_jvms; | |
591 { PreserveJVMState pjvms(&kit); | |
592 kit.set_control(slow_ctl); | |
593 if (!kit.stopped()) { | |
594 slow_jvms = _if_missed->generate(kit.sync_jvms()); | |
595 assert(slow_jvms != NULL, "miss path must not fail to generate"); | |
596 kit.add_exception_states_from(slow_jvms); | |
597 kit.set_map(slow_jvms->map()); | |
598 if (!kit.stopped()) | |
599 slow_map = kit.stop(); | |
600 } | |
601 } | |
602 | |
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603 if (kit.stopped()) { |
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604 // Instance exactly does not matches the desired type. |
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605 kit.set_jvms(slow_jvms); |
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606 return kit.transfer_exceptions_into_jvms(); |
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607 } |
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608 |
0 | 609 // fall through if the instance exactly matches the desired type |
610 kit.replace_in_map(receiver, exact_receiver); | |
611 | |
612 // Make the hot call: | |
613 JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); | |
614 if (new_jvms == NULL) { | |
615 // Inline failed, so make a direct call. | |
616 assert(_if_hit->is_inline(), "must have been a failed inline"); | |
617 CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); | |
618 new_jvms = cg->generate(kit.sync_jvms()); | |
619 } | |
620 kit.add_exception_states_from(new_jvms); | |
621 kit.set_jvms(new_jvms); | |
622 | |
623 // Need to merge slow and fast? | |
624 if (slow_map == NULL) { | |
625 // The fast path is the only path remaining. | |
626 return kit.transfer_exceptions_into_jvms(); | |
627 } | |
628 | |
629 if (kit.stopped()) { | |
630 // Inlined method threw an exception, so it's just the slow path after all. | |
631 kit.set_jvms(slow_jvms); | |
632 return kit.transfer_exceptions_into_jvms(); | |
633 } | |
634 | |
635 // Finish the diamond. | |
636 kit.C->set_has_split_ifs(true); // Has chance for split-if optimization | |
637 RegionNode* region = new (kit.C, 3) RegionNode(3); | |
638 region->init_req(1, kit.control()); | |
639 region->init_req(2, slow_map->control()); | |
640 kit.set_control(gvn.transform(region)); | |
641 Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); | |
642 iophi->set_req(2, slow_map->i_o()); | |
643 kit.set_i_o(gvn.transform(iophi)); | |
644 kit.merge_memory(slow_map->merged_memory(), region, 2); | |
645 uint tos = kit.jvms()->stkoff() + kit.sp(); | |
646 uint limit = slow_map->req(); | |
647 for (uint i = TypeFunc::Parms; i < limit; i++) { | |
648 // Skip unused stack slots; fast forward to monoff(); | |
649 if (i == tos) { | |
650 i = kit.jvms()->monoff(); | |
651 if( i >= limit ) break; | |
652 } | |
653 Node* m = kit.map()->in(i); | |
654 Node* n = slow_map->in(i); | |
655 if (m != n) { | |
656 const Type* t = gvn.type(m)->meet(gvn.type(n)); | |
657 Node* phi = PhiNode::make(region, m, t); | |
658 phi->set_req(2, n); | |
659 kit.map()->set_req(i, gvn.transform(phi)); | |
660 } | |
661 } | |
662 return kit.transfer_exceptions_into_jvms(); | |
663 } | |
664 | |
665 | |
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666 //------------------------PredictedDynamicCallGenerator----------------------- |
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667 // Internal class which handles all out-of-line calls checking receiver type. |
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668 class PredictedDynamicCallGenerator : public CallGenerator { |
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669 ciMethodHandle* _predicted_method_handle; |
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670 CallGenerator* _if_missed; |
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671 CallGenerator* _if_hit; |
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672 float _hit_prob; |
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673 |
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674 public: |
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675 PredictedDynamicCallGenerator(ciMethodHandle* predicted_method_handle, |
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676 CallGenerator* if_missed, |
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677 CallGenerator* if_hit, |
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678 float hit_prob) |
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679 : CallGenerator(if_missed->method()), |
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680 _predicted_method_handle(predicted_method_handle), |
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681 _if_missed(if_missed), |
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682 _if_hit(if_hit), |
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683 _hit_prob(hit_prob) |
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684 {} |
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685 |
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686 virtual bool is_inline() const { return _if_hit->is_inline(); } |
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687 virtual bool is_deferred() const { return _if_hit->is_deferred(); } |
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688 |
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689 virtual JVMState* generate(JVMState* jvms); |
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690 }; |
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691 |
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692 |
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693 CallGenerator* CallGenerator::for_predicted_dynamic_call(ciMethodHandle* predicted_method_handle, |
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694 CallGenerator* if_missed, |
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695 CallGenerator* if_hit, |
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696 float hit_prob) { |
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697 return new PredictedDynamicCallGenerator(predicted_method_handle, if_missed, if_hit, hit_prob); |
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698 } |
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699 |
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700 |
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701 CallGenerator* CallGenerator::for_method_handle_inline(Node* method_handle, JVMState* jvms, |
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702 ciMethod* caller, ciMethod* callee, ciCallProfile profile) { |
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703 if (method_handle->Opcode() == Op_ConP) { |
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704 const TypeOopPtr* oop_ptr = method_handle->bottom_type()->is_oopptr(); |
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705 ciObject* const_oop = oop_ptr->const_oop(); |
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706 ciMethodHandle* method_handle = const_oop->as_method_handle(); |
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707 |
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708 // Set the callee to have access to the class and signature in |
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709 // the MethodHandleCompiler. |
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710 method_handle->set_callee(callee); |
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711 method_handle->set_caller(caller); |
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712 method_handle->set_call_profile(profile); |
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713 |
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714 // Get an adapter for the MethodHandle. |
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715 ciMethod* target_method = method_handle->get_method_handle_adapter(); |
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716 if (target_method != NULL) { |
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717 CallGenerator* hit_cg = Compile::current()->call_generator(target_method, -1, false, jvms, true, 1); |
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718 if (hit_cg != NULL && hit_cg->is_inline()) |
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719 return hit_cg; |
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720 } |
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721 } else if (method_handle->Opcode() == Op_Phi && method_handle->req() == 3 && |
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722 method_handle->in(1)->Opcode() == Op_ConP && method_handle->in(2)->Opcode() == Op_ConP) { |
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723 // selectAlternative idiom merging two constant MethodHandles. |
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724 // Generate a guard so that each can be inlined. We might want to |
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725 // do more inputs at later point but this gets the most common |
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726 // case. |
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727 const TypeOopPtr* oop_ptr = method_handle->in(1)->bottom_type()->is_oopptr(); |
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728 ciObject* const_oop = oop_ptr->const_oop(); |
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729 ciMethodHandle* mh = const_oop->as_method_handle(); |
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730 |
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731 CallGenerator* cg1 = for_method_handle_inline(method_handle->in(1), jvms, caller, callee, profile); |
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732 CallGenerator* cg2 = for_method_handle_inline(method_handle->in(2), jvms, caller, callee, profile); |
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733 if (cg1 != NULL && cg2 != NULL) { |
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734 return new PredictedDynamicCallGenerator(mh, cg2, cg1, PROB_FAIR); |
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735 } |
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736 } |
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737 return NULL; |
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738 } |
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739 |
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740 |
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741 JVMState* PredictedDynamicCallGenerator::generate(JVMState* jvms) { |
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742 GraphKit kit(jvms); |
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743 PhaseGVN& gvn = kit.gvn(); |
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744 |
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745 CompileLog* log = kit.C->log(); |
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746 if (log != NULL) { |
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747 log->elem("predicted_dynamic_call bci='%d'", jvms->bci()); |
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748 } |
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749 |
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750 const TypeOopPtr* predicted_mh_ptr = TypeOopPtr::make_from_constant(_predicted_method_handle, true); |
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751 Node* predicted_mh = kit.makecon(predicted_mh_ptr); |
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752 |
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753 Node* bol = NULL; |
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754 int bc = jvms->method()->java_code_at_bci(jvms->bci()); |
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755 if (bc == Bytecodes::_invokespecial) { |
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756 // This is the selectAlternative idiom for guardWithTest |
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757 Node* receiver = kit.argument(0); |
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758 |
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759 // Check if the MethodHandle is the expected one |
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760 Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(receiver, predicted_mh)); |
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761 bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
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762 } else { |
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763 assert(bc == Bytecodes::_invokedynamic, "must be"); |
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764 // Get the constant pool cache from the caller class. |
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765 ciMethod* caller_method = jvms->method(); |
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766 ciBytecodeStream str(caller_method); |
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767 str.force_bci(jvms->bci()); // Set the stream to the invokedynamic bci. |
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768 ciCPCache* cpcache = str.get_cpcache(); |
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769 |
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770 // Get the offset of the CallSite from the constant pool cache |
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771 // pointer. |
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772 int index = str.get_method_index(); |
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773 size_t call_site_offset = cpcache->get_f1_offset(index); |
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774 |
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775 // Load the CallSite object from the constant pool cache. |
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776 const TypeOopPtr* cpcache_ptr = TypeOopPtr::make_from_constant(cpcache); |
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777 Node* cpcache_adr = kit.makecon(cpcache_ptr); |
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778 Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, cpcache_adr, call_site_offset); |
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779 Node* call_site = kit.make_load(kit.control(), call_site_adr, TypeInstPtr::BOTTOM, T_OBJECT, Compile::AliasIdxRaw); |
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780 |
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781 // Load the target MethodHandle from the CallSite object. |
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782 Node* target_adr = kit.basic_plus_adr(call_site, call_site, java_lang_invoke_CallSite::target_offset_in_bytes()); |
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783 Node* target_mh = kit.make_load(kit.control(), target_adr, TypeInstPtr::BOTTOM, T_OBJECT); |
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784 |
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785 // Check if the MethodHandle is still the same. |
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786 Node* cmp = gvn.transform(new(kit.C, 3) CmpPNode(target_mh, predicted_mh)); |
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787 bol = gvn.transform(new(kit.C, 2) BoolNode(cmp, BoolTest::eq) ); |
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788 } |
1138
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789 IfNode* iff = kit.create_and_xform_if(kit.control(), bol, _hit_prob, COUNT_UNKNOWN); |
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790 kit.set_control( gvn.transform(new(kit.C, 1) IfTrueNode (iff))); |
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791 Node* slow_ctl = gvn.transform(new(kit.C, 1) IfFalseNode(iff)); |
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792 |
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793 SafePointNode* slow_map = NULL; |
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794 JVMState* slow_jvms; |
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795 { PreserveJVMState pjvms(&kit); |
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796 kit.set_control(slow_ctl); |
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797 if (!kit.stopped()) { |
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798 slow_jvms = _if_missed->generate(kit.sync_jvms()); |
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799 assert(slow_jvms != NULL, "miss path must not fail to generate"); |
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800 kit.add_exception_states_from(slow_jvms); |
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801 kit.set_map(slow_jvms->map()); |
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802 if (!kit.stopped()) |
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803 slow_map = kit.stop(); |
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804 } |
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805 } |
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806 |
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807 if (kit.stopped()) { |
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808 // Instance exactly does not matches the desired type. |
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809 kit.set_jvms(slow_jvms); |
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810 return kit.transfer_exceptions_into_jvms(); |
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811 } |
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812 |
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813 // Make the hot call: |
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814 JVMState* new_jvms = _if_hit->generate(kit.sync_jvms()); |
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815 if (new_jvms == NULL) { |
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816 // Inline failed, so make a direct call. |
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817 assert(_if_hit->is_inline(), "must have been a failed inline"); |
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818 CallGenerator* cg = CallGenerator::for_direct_call(_if_hit->method()); |
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819 new_jvms = cg->generate(kit.sync_jvms()); |
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820 } |
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821 kit.add_exception_states_from(new_jvms); |
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822 kit.set_jvms(new_jvms); |
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823 |
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824 // Need to merge slow and fast? |
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825 if (slow_map == NULL) { |
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826 // The fast path is the only path remaining. |
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827 return kit.transfer_exceptions_into_jvms(); |
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828 } |
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829 |
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830 if (kit.stopped()) { |
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831 // Inlined method threw an exception, so it's just the slow path after all. |
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832 kit.set_jvms(slow_jvms); |
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833 return kit.transfer_exceptions_into_jvms(); |
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834 } |
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835 |
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836 // Finish the diamond. |
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837 kit.C->set_has_split_ifs(true); // Has chance for split-if optimization |
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838 RegionNode* region = new (kit.C, 3) RegionNode(3); |
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839 region->init_req(1, kit.control()); |
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840 region->init_req(2, slow_map->control()); |
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841 kit.set_control(gvn.transform(region)); |
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842 Node* iophi = PhiNode::make(region, kit.i_o(), Type::ABIO); |
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843 iophi->set_req(2, slow_map->i_o()); |
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844 kit.set_i_o(gvn.transform(iophi)); |
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845 kit.merge_memory(slow_map->merged_memory(), region, 2); |
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846 uint tos = kit.jvms()->stkoff() + kit.sp(); |
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847 uint limit = slow_map->req(); |
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848 for (uint i = TypeFunc::Parms; i < limit; i++) { |
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849 // Skip unused stack slots; fast forward to monoff(); |
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850 if (i == tos) { |
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851 i = kit.jvms()->monoff(); |
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852 if( i >= limit ) break; |
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853 } |
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854 Node* m = kit.map()->in(i); |
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855 Node* n = slow_map->in(i); |
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856 if (m != n) { |
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857 const Type* t = gvn.type(m)->meet(gvn.type(n)); |
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858 Node* phi = PhiNode::make(region, m, t); |
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859 phi->set_req(2, n); |
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860 kit.map()->set_req(i, gvn.transform(phi)); |
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861 } |
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862 } |
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863 return kit.transfer_exceptions_into_jvms(); |
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864 } |
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865 |
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866 |
0 | 867 //-------------------------UncommonTrapCallGenerator----------------------------- |
868 // Internal class which handles all out-of-line calls checking receiver type. | |
869 class UncommonTrapCallGenerator : public CallGenerator { | |
870 Deoptimization::DeoptReason _reason; | |
871 Deoptimization::DeoptAction _action; | |
872 | |
873 public: | |
874 UncommonTrapCallGenerator(ciMethod* m, | |
875 Deoptimization::DeoptReason reason, | |
876 Deoptimization::DeoptAction action) | |
877 : CallGenerator(m) | |
878 { | |
879 _reason = reason; | |
880 _action = action; | |
881 } | |
882 | |
883 virtual bool is_virtual() const { ShouldNotReachHere(); return false; } | |
884 virtual bool is_trap() const { return true; } | |
885 | |
886 virtual JVMState* generate(JVMState* jvms); | |
887 }; | |
888 | |
889 | |
890 CallGenerator* | |
891 CallGenerator::for_uncommon_trap(ciMethod* m, | |
892 Deoptimization::DeoptReason reason, | |
893 Deoptimization::DeoptAction action) { | |
894 return new UncommonTrapCallGenerator(m, reason, action); | |
895 } | |
896 | |
897 | |
898 JVMState* UncommonTrapCallGenerator::generate(JVMState* jvms) { | |
899 GraphKit kit(jvms); | |
900 // Take the trap with arguments pushed on the stack. (Cf. null_check_receiver). | |
901 int nargs = method()->arg_size(); | |
902 kit.inc_sp(nargs); | |
903 assert(nargs <= kit.sp() && kit.sp() <= jvms->stk_size(), "sane sp w/ args pushed"); | |
904 if (_reason == Deoptimization::Reason_class_check && | |
905 _action == Deoptimization::Action_maybe_recompile) { | |
906 // Temp fix for 6529811 | |
907 // Don't allow uncommon_trap to override our decision to recompile in the event | |
908 // of a class cast failure for a monomorphic call as it will never let us convert | |
909 // the call to either bi-morphic or megamorphic and can lead to unc-trap loops | |
910 bool keep_exact_action = true; | |
911 kit.uncommon_trap(_reason, _action, NULL, "monomorphic vcall checkcast", false, keep_exact_action); | |
912 } else { | |
913 kit.uncommon_trap(_reason, _action); | |
914 } | |
915 return kit.transfer_exceptions_into_jvms(); | |
916 } | |
917 | |
918 // (Note: Moved hook_up_call to GraphKit::set_edges_for_java_call.) | |
919 | |
920 // (Node: Merged hook_up_exits into ParseGenerator::generate.) | |
921 | |
922 #define NODES_OVERHEAD_PER_METHOD (30.0) | |
923 #define NODES_PER_BYTECODE (9.5) | |
924 | |
925 void WarmCallInfo::init(JVMState* call_site, ciMethod* call_method, ciCallProfile& profile, float prof_factor) { | |
926 int call_count = profile.count(); | |
927 int code_size = call_method->code_size(); | |
928 | |
929 // Expected execution count is based on the historical count: | |
930 _count = call_count < 0 ? 1 : call_site->method()->scale_count(call_count, prof_factor); | |
931 | |
932 // Expected profit from inlining, in units of simple call-overheads. | |
933 _profit = 1.0; | |
934 | |
935 // Expected work performed by the call in units of call-overheads. | |
936 // %%% need an empirical curve fit for "work" (time in call) | |
937 float bytecodes_per_call = 3; | |
938 _work = 1.0 + code_size / bytecodes_per_call; | |
939 | |
940 // Expected size of compilation graph: | |
941 // -XX:+PrintParseStatistics once reported: | |
942 // Methods seen: 9184 Methods parsed: 9184 Nodes created: 1582391 | |
943 // Histogram of 144298 parsed bytecodes: | |
944 // %%% Need an better predictor for graph size. | |
945 _size = NODES_OVERHEAD_PER_METHOD + (NODES_PER_BYTECODE * code_size); | |
946 } | |
947 | |
948 // is_cold: Return true if the node should never be inlined. | |
949 // This is true if any of the key metrics are extreme. | |
950 bool WarmCallInfo::is_cold() const { | |
951 if (count() < WarmCallMinCount) return true; | |
952 if (profit() < WarmCallMinProfit) return true; | |
953 if (work() > WarmCallMaxWork) return true; | |
954 if (size() > WarmCallMaxSize) return true; | |
955 return false; | |
956 } | |
957 | |
958 // is_hot: Return true if the node should be inlined immediately. | |
959 // This is true if any of the key metrics are extreme. | |
960 bool WarmCallInfo::is_hot() const { | |
961 assert(!is_cold(), "eliminate is_cold cases before testing is_hot"); | |
962 if (count() >= HotCallCountThreshold) return true; | |
963 if (profit() >= HotCallProfitThreshold) return true; | |
964 if (work() <= HotCallTrivialWork) return true; | |
965 if (size() <= HotCallTrivialSize) return true; | |
966 return false; | |
967 } | |
968 | |
969 // compute_heat: | |
970 float WarmCallInfo::compute_heat() const { | |
971 assert(!is_cold(), "compute heat only on warm nodes"); | |
972 assert(!is_hot(), "compute heat only on warm nodes"); | |
973 int min_size = MAX2(0, (int)HotCallTrivialSize); | |
974 int max_size = MIN2(500, (int)WarmCallMaxSize); | |
975 float method_size = (size() - min_size) / MAX2(1, max_size - min_size); | |
976 float size_factor; | |
977 if (method_size < 0.05) size_factor = 4; // 2 sigmas better than avg. | |
978 else if (method_size < 0.15) size_factor = 2; // 1 sigma better than avg. | |
979 else if (method_size < 0.5) size_factor = 1; // better than avg. | |
980 else size_factor = 0.5; // worse than avg. | |
981 return (count() * profit() * size_factor); | |
982 } | |
983 | |
984 bool WarmCallInfo::warmer_than(WarmCallInfo* that) { | |
985 assert(this != that, "compare only different WCIs"); | |
986 assert(this->heat() != 0 && that->heat() != 0, "call compute_heat 1st"); | |
987 if (this->heat() > that->heat()) return true; | |
988 if (this->heat() < that->heat()) return false; | |
989 assert(this->heat() == that->heat(), "no NaN heat allowed"); | |
990 // Equal heat. Break the tie some other way. | |
991 if (!this->call() || !that->call()) return (address)this > (address)that; | |
992 return this->call()->_idx > that->call()->_idx; | |
993 } | |
994 | |
995 //#define UNINIT_NEXT ((WarmCallInfo*)badAddress) | |
996 #define UNINIT_NEXT ((WarmCallInfo*)NULL) | |
997 | |
998 WarmCallInfo* WarmCallInfo::insert_into(WarmCallInfo* head) { | |
999 assert(next() == UNINIT_NEXT, "not yet on any list"); | |
1000 WarmCallInfo* prev_p = NULL; | |
1001 WarmCallInfo* next_p = head; | |
1002 while (next_p != NULL && next_p->warmer_than(this)) { | |
1003 prev_p = next_p; | |
1004 next_p = prev_p->next(); | |
1005 } | |
1006 // Install this between prev_p and next_p. | |
1007 this->set_next(next_p); | |
1008 if (prev_p == NULL) | |
1009 head = this; | |
1010 else | |
1011 prev_p->set_next(this); | |
1012 return head; | |
1013 } | |
1014 | |
1015 WarmCallInfo* WarmCallInfo::remove_from(WarmCallInfo* head) { | |
1016 WarmCallInfo* prev_p = NULL; | |
1017 WarmCallInfo* next_p = head; | |
1018 while (next_p != this) { | |
1019 assert(next_p != NULL, "this must be in the list somewhere"); | |
1020 prev_p = next_p; | |
1021 next_p = prev_p->next(); | |
1022 } | |
1023 next_p = this->next(); | |
1024 debug_only(this->set_next(UNINIT_NEXT)); | |
1025 // Remove this from between prev_p and next_p. | |
1026 if (prev_p == NULL) | |
1027 head = next_p; | |
1028 else | |
1029 prev_p->set_next(next_p); | |
1030 return head; | |
1031 } | |
1032 | |
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1033 WarmCallInfo WarmCallInfo::_always_hot(WarmCallInfo::MAX_VALUE(), WarmCallInfo::MAX_VALUE(), |
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1034 WarmCallInfo::MIN_VALUE(), WarmCallInfo::MIN_VALUE()); |
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1035 WarmCallInfo WarmCallInfo::_always_cold(WarmCallInfo::MIN_VALUE(), WarmCallInfo::MIN_VALUE(), |
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1036 WarmCallInfo::MAX_VALUE(), WarmCallInfo::MAX_VALUE()); |
0 | 1037 |
1038 WarmCallInfo* WarmCallInfo::always_hot() { | |
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1039 assert(_always_hot.is_hot(), "must always be hot"); |
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1040 return &_always_hot; |
0 | 1041 } |
1042 | |
1043 WarmCallInfo* WarmCallInfo::always_cold() { | |
2443
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1044 assert(_always_cold.is_cold(), "must always be cold"); |
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1045 return &_always_cold; |
0 | 1046 } |
1047 | |
1048 | |
1049 #ifndef PRODUCT | |
1050 | |
1051 void WarmCallInfo::print() const { | |
1052 tty->print("%s : C=%6.1f P=%6.1f W=%6.1f S=%6.1f H=%6.1f -> %p", | |
1053 is_cold() ? "cold" : is_hot() ? "hot " : "warm", | |
1054 count(), profit(), work(), size(), compute_heat(), next()); | |
1055 tty->cr(); | |
1056 if (call() != NULL) call()->dump(); | |
1057 } | |
1058 | |
1059 void print_wci(WarmCallInfo* ci) { | |
1060 ci->print(); | |
1061 } | |
1062 | |
1063 void WarmCallInfo::print_all() const { | |
1064 for (const WarmCallInfo* p = this; p != NULL; p = p->next()) | |
1065 p->print(); | |
1066 } | |
1067 | |
1068 int WarmCallInfo::count_all() const { | |
1069 int cnt = 0; | |
1070 for (const WarmCallInfo* p = this; p != NULL; p = p->next()) | |
1071 cnt++; | |
1072 return cnt; | |
1073 } | |
1074 | |
1075 #endif //PRODUCT |