Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.hpp @ 2607:008adfd6d850
Fixed the stateBefore of invokes and monitorenter instructions to include the arguments of the instruction.
This is necessary to ensure correct continuation in the interpreter when the stateBefore is used as a deoptimization point.
| author | Thomas Wuerthinger <thomas@wuerthinger.net> |
|---|---|
| date | Fri, 06 May 2011 17:47:17 +0200 |
| parents | 3d58a4983660 |
| children | be4ca325525a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 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 #ifndef SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |
| 26 #define SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP | |
| 27 | |
| 28 #include "interpreter/bytecodeHistogram.hpp" | |
| 29 #include "interpreter/bytecodeTracer.hpp" | |
| 30 #include "interpreter/linkResolver.hpp" | |
| 31 #include "memory/allocation.hpp" | |
| 32 #include "memory/resourceArea.hpp" | |
| 33 #include "runtime/threadLocalStorage.hpp" | |
| 34 #include "utilities/hashtable.hpp" | |
| 35 | |
| 0 | 36 class AdapterHandlerEntry; |
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37 class AdapterHandlerTable; |
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38 class AdapterFingerPrint; |
| 0 | 39 class vframeStream; |
| 40 | |
| 41 // Runtime is the base class for various runtime interfaces | |
| 42 // (InterpreterRuntime, CompilerRuntime, etc.). It provides | |
| 43 // shared functionality such as exception forwarding (C++ to | |
| 44 // Java exceptions), locking/unlocking mechanisms, statistical | |
| 45 // information, etc. | |
| 46 | |
| 47 class SharedRuntime: AllStatic { | |
| 48 private: | |
| 49 static methodHandle resolve_sub_helper(JavaThread *thread, | |
| 50 bool is_virtual, | |
| 51 bool is_optimized, TRAPS); | |
| 52 | |
| 53 // Shared stub locations | |
| 54 | |
| 55 static RuntimeStub* _wrong_method_blob; | |
| 56 static RuntimeStub* _ic_miss_blob; | |
| 57 static RuntimeStub* _resolve_opt_virtual_call_blob; | |
| 58 static RuntimeStub* _resolve_virtual_call_blob; | |
| 59 static RuntimeStub* _resolve_static_call_blob; | |
| 60 | |
| 61 static SafepointBlob* _polling_page_safepoint_handler_blob; | |
| 62 static SafepointBlob* _polling_page_return_handler_blob; | |
| 63 #ifdef COMPILER2 | |
| 64 static ExceptionBlob* _exception_blob; | |
| 65 static UncommonTrapBlob* _uncommon_trap_blob; | |
| 66 #endif // COMPILER2 | |
| 67 | |
| 68 #ifndef PRODUCT | |
| 69 | |
| 70 // Counters | |
| 71 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) | |
| 72 | |
| 73 #endif // !PRODUCT | |
| 74 public: | |
|
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75 |
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76 // max bytes for each dtrace string parameter |
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77 enum { max_dtrace_string_size = 256 }; |
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78 |
| 0 | 79 // The following arithmetic routines are used on platforms that do |
| 80 // not have machine instructions to implement their functionality. | |
| 81 // Do not remove these. | |
| 82 | |
| 83 // long arithmetics | |
| 84 static jlong lmul(jlong y, jlong x); | |
| 85 static jlong ldiv(jlong y, jlong x); | |
| 86 static jlong lrem(jlong y, jlong x); | |
| 87 | |
| 88 // float and double remainder | |
| 89 static jfloat frem(jfloat x, jfloat y); | |
| 90 static jdouble drem(jdouble x, jdouble y); | |
| 91 | |
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92 #ifdef __SOFTFP__ |
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93 static jfloat fadd(jfloat x, jfloat y); |
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94 static jfloat fsub(jfloat x, jfloat y); |
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95 static jfloat fmul(jfloat x, jfloat y); |
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96 static jfloat fdiv(jfloat x, jfloat y); |
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97 |
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98 static jdouble dadd(jdouble x, jdouble y); |
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99 static jdouble dsub(jdouble x, jdouble y); |
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100 static jdouble dmul(jdouble x, jdouble y); |
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101 static jdouble ddiv(jdouble x, jdouble y); |
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102 #endif // __SOFTFP__ |
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103 |
| 0 | 104 // float conversion (needs to set appropriate rounding mode) |
| 105 static jint f2i (jfloat x); | |
| 106 static jlong f2l (jfloat x); | |
| 107 static jint d2i (jdouble x); | |
| 108 static jlong d2l (jdouble x); | |
| 109 static jfloat d2f (jdouble x); | |
| 110 static jfloat l2f (jlong x); | |
| 111 static jdouble l2d (jlong x); | |
| 112 | |
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113 #ifdef __SOFTFP__ |
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114 static jfloat i2f (jint x); |
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115 static jdouble i2d (jint x); |
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116 static jdouble f2d (jfloat x); |
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117 #endif // __SOFTFP__ |
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118 |
| 0 | 119 // double trigonometrics and transcendentals |
| 120 static jdouble dsin(jdouble x); | |
| 121 static jdouble dcos(jdouble x); | |
| 122 static jdouble dtan(jdouble x); | |
| 123 static jdouble dlog(jdouble x); | |
| 124 static jdouble dlog10(jdouble x); | |
| 125 static jdouble dexp(jdouble x); | |
| 126 static jdouble dpow(jdouble x, jdouble y); | |
| 127 | |
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128 #if defined(__SOFTFP__) || defined(E500V2) |
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129 static double dabs(double f); |
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130 #endif |
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131 |
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132 #if defined(__SOFTFP__) || defined(PPC) |
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133 static double dsqrt(double f); |
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134 #endif |
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135 |
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136 #ifdef __SOFTFP__ |
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137 // C++ compiler generates soft float instructions as well as passing |
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138 // float and double in registers. |
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139 static int fcmpl(float x, float y); |
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140 static int fcmpg(float x, float y); |
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141 static int dcmpl(double x, double y); |
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142 static int dcmpg(double x, double y); |
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143 |
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144 static int unordered_fcmplt(float x, float y); |
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145 static int unordered_dcmplt(double x, double y); |
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146 static int unordered_fcmple(float x, float y); |
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147 static int unordered_dcmple(double x, double y); |
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148 static int unordered_fcmpge(float x, float y); |
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149 static int unordered_dcmpge(double x, double y); |
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150 static int unordered_fcmpgt(float x, float y); |
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151 static int unordered_dcmpgt(double x, double y); |
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152 |
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153 static float fneg(float f); |
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154 static double dneg(double f); |
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155 #endif |
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156 |
| 0 | 157 // exception handling across interpreter/compiler boundaries |
| 1295 | 158 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address); |
| 159 static address exception_handler_for_return_address(JavaThread* thread, address return_address); | |
| 0 | 160 |
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161 #ifndef SERIALGC |
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162 // G1 write barriers |
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163 static void g1_wb_pre(oopDesc* orig, JavaThread *thread); |
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164 static void g1_wb_post(void* card_addr, JavaThread* thread); |
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165 #endif // !SERIALGC |
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166 |
| 0 | 167 // exception handling and implicit exceptions |
| 168 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 169 bool force_unwind, bool top_frame_only); | |
| 170 enum ImplicitExceptionKind { | |
| 171 IMPLICIT_NULL, | |
| 172 IMPLICIT_DIVIDE_BY_ZERO, | |
| 173 STACK_OVERFLOW | |
| 174 }; | |
| 175 static void throw_AbstractMethodError(JavaThread* thread); | |
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176 static void throw_IncompatibleClassChangeError(JavaThread* thread); |
| 0 | 177 static void throw_ArithmeticException(JavaThread* thread); |
| 178 static void throw_NullPointerException(JavaThread* thread); | |
| 179 static void throw_NullPointerException_at_call(JavaThread* thread); | |
| 180 static void throw_StackOverflowError(JavaThread* thread); | |
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181 static address deoptimization_continuation(JavaThread* thread, address pc, nmethod* nm); |
| 0 | 182 static address continuation_for_implicit_exception(JavaThread* thread, |
| 183 address faulting_pc, | |
| 184 ImplicitExceptionKind exception_kind); | |
| 185 | |
| 186 // Shared stub locations | |
| 187 static address get_poll_stub(address pc); | |
| 188 | |
| 189 static address get_ic_miss_stub() { | |
| 190 assert(_ic_miss_blob!= NULL, "oops"); | |
| 1748 | 191 return _ic_miss_blob->entry_point(); |
| 0 | 192 } |
| 193 | |
| 194 static address get_handle_wrong_method_stub() { | |
| 195 assert(_wrong_method_blob!= NULL, "oops"); | |
| 1748 | 196 return _wrong_method_blob->entry_point(); |
| 0 | 197 } |
| 198 | |
| 199 #ifdef COMPILER2 | |
| 200 static void generate_uncommon_trap_blob(void); | |
| 201 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } | |
| 202 #endif // COMPILER2 | |
| 203 | |
| 204 static address get_resolve_opt_virtual_call_stub(){ | |
| 205 assert(_resolve_opt_virtual_call_blob != NULL, "oops"); | |
| 1748 | 206 return _resolve_opt_virtual_call_blob->entry_point(); |
| 0 | 207 } |
| 208 static address get_resolve_virtual_call_stub() { | |
| 209 assert(_resolve_virtual_call_blob != NULL, "oops"); | |
| 1748 | 210 return _resolve_virtual_call_blob->entry_point(); |
| 0 | 211 } |
| 212 static address get_resolve_static_call_stub() { | |
| 213 assert(_resolve_static_call_blob != NULL, "oops"); | |
| 1748 | 214 return _resolve_static_call_blob->entry_point(); |
| 0 | 215 } |
| 216 | |
| 217 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } | |
| 218 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } | |
| 219 | |
| 220 // Counters | |
| 221 #ifndef PRODUCT | |
| 222 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } | |
| 223 #endif // PRODUCT | |
| 224 | |
| 225 // Helper routine for full-speed JVMTI exception throwing support | |
| 226 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); | |
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227 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL); |
| 0 | 228 |
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229 // RedefineClasses() tracing support for obsolete method entry |
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230 static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m); |
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231 |
| 0 | 232 // To be used as the entry point for unresolved native methods. |
| 233 static address native_method_throw_unsatisfied_link_error_entry(); | |
| 234 | |
| 235 // bytecode tracing is only used by the TraceBytecodes | |
| 236 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; | |
| 237 | |
| 238 // Used to back off a spin lock that is under heavy contention | |
| 239 static void yield_all(JavaThread* thread, int attempts = 0); | |
| 240 | |
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241 static oop retrieve_receiver( Symbol* sig, frame caller ); |
| 0 | 242 |
| 243 static void register_finalizer(JavaThread* thread, oopDesc* obj); | |
| 244 | |
| 245 // dtrace notifications | |
| 246 static int dtrace_object_alloc(oopDesc* o); | |
| 247 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); | |
| 248 static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m); | |
| 249 static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m); | |
| 250 | |
| 251 // Utility method for retrieving the Java thread id, returns 0 if the | |
| 252 // thread is not a well formed Java thread. | |
| 253 static jlong get_java_tid(Thread* thread); | |
| 254 | |
| 255 | |
| 256 // used by native wrappers to reenable yellow if overflow happened in native code | |
| 257 static void reguard_yellow_pages(); | |
| 258 | |
| 259 /** | |
| 260 * Fill in the "X cannot be cast to a Y" message for ClassCastException | |
| 261 * | |
| 262 * @param thr the current thread | |
| 263 * @param name the name of the class of the object attempted to be cast | |
| 264 * @return the dynamically allocated exception message (must be freed | |
| 265 * by the caller using a resource mark) | |
| 266 * | |
| 267 * BCP must refer to the current 'checkcast' opcode for the frame | |
| 268 * on top of the stack. | |
| 269 * The caller (or one of it's callers) must use a ResourceMark | |
| 270 * in order to correctly free the result. | |
| 271 */ | |
| 272 static char* generate_class_cast_message(JavaThread* thr, const char* name); | |
| 273 | |
| 274 /** | |
| 710 | 275 * Fill in the message for a WrongMethodTypeException |
| 276 * | |
| 277 * @param thr the current thread | |
| 278 * @param mtype (optional) expected method type (or argument class) | |
| 279 * @param mhandle (optional) actual method handle (or argument) | |
| 280 * @return the dynamically allocated exception message | |
| 281 * | |
| 282 * BCP for the frame on top of the stack must refer to an | |
| 283 * 'invokevirtual' op for a method handle, or an 'invokedyamic' op. | |
| 284 * The caller (or one of its callers) must use a ResourceMark | |
| 285 * in order to correctly free the result. | |
| 286 */ | |
| 287 static char* generate_wrong_method_type_message(JavaThread* thr, | |
| 288 oopDesc* mtype = NULL, | |
| 289 oopDesc* mhandle = NULL); | |
| 290 | |
| 291 /** Return non-null if the mtype is a klass or Class, not a MethodType. */ | |
| 292 static oop wrong_method_type_is_for_single_argument(JavaThread* thr, | |
| 293 oopDesc* mtype); | |
| 294 | |
| 295 /** | |
| 0 | 296 * Fill in the "X cannot be cast to a Y" message for ClassCastException |
| 297 * | |
| 298 * @param name the name of the class of the object attempted to be cast | |
| 299 * @param klass the name of the target klass attempt | |
| 710 | 300 * @param gripe the specific kind of problem being reported |
| 0 | 301 * @return the dynamically allocated exception message (must be freed |
| 302 * by the caller using a resource mark) | |
| 303 * | |
| 304 * This version does not require access the frame, so it can be called | |
| 305 * from interpreted code | |
| 306 * The caller (or one of it's callers) must use a ResourceMark | |
| 307 * in order to correctly free the result. | |
| 308 */ | |
| 710 | 309 static char* generate_class_cast_message(const char* name, const char* klass, |
| 310 const char* gripe = " cannot be cast to "); | |
| 0 | 311 |
| 312 // Resolves a call site- may patch in the destination of the call into the | |
| 313 // compiled code. | |
| 314 static methodHandle resolve_helper(JavaThread *thread, | |
| 315 bool is_virtual, | |
| 316 bool is_optimized, TRAPS); | |
| 317 | |
| 318 static void generate_stubs(void); | |
| 319 | |
| 320 private: | |
| 321 // deopt blob | |
| 322 static void generate_deopt_blob(void); | |
| 323 static DeoptimizationBlob* _deopt_blob; | |
| 324 | |
| 325 public: | |
| 326 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } | |
| 327 | |
| 328 // Resets a call-site in compiled code so it will get resolved again. | |
| 329 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); | |
| 330 | |
| 331 // In the code prolog, if the klass comparison fails, the inline cache | |
| 332 // misses and the call site is patched to megamorphic | |
| 333 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); | |
| 334 | |
| 335 // Find the method that called us. | |
| 336 static methodHandle find_callee_method(JavaThread* thread, TRAPS); | |
| 337 | |
| 338 | |
| 339 private: | |
| 340 static Handle find_callee_info(JavaThread* thread, | |
| 341 Bytecodes::Code& bc, | |
| 342 CallInfo& callinfo, TRAPS); | |
| 343 static Handle find_callee_info_helper(JavaThread* thread, | |
| 344 vframeStream& vfst, | |
| 345 Bytecodes::Code& bc, | |
| 346 CallInfo& callinfo, TRAPS); | |
| 347 | |
| 348 static address clean_virtual_call_entry(); | |
| 349 static address clean_opt_virtual_call_entry(); | |
| 350 static address clean_static_call_entry(); | |
| 351 | |
| 352 public: | |
| 353 | |
| 354 // Read the array of BasicTypes from a Java signature, and compute where | |
| 355 // compiled Java code would like to put the results. Values in reg_lo and | |
| 356 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are | |
| 357 // registers, those above refer to 4-byte stack slots. All stack slots are | |
| 358 // based off of the window top. SharedInfo::stack0 refers to the first usable | |
| 359 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word | |
| 360 // 4-bytes higher. So for sparc because the register window save area is at | |
| 361 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 | |
| 362 // will be just above it. ( | |
| 363 // return value is the maximum number of VMReg stack slots the convention will use. | |
| 364 static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing); | |
| 365 | |
| 366 // Ditto except for calling C | |
| 367 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); | |
| 368 | |
| 369 // Generate I2C and C2I adapters. These adapters are simple argument marshalling | |
| 370 // blobs. Unlike adapters in the tiger and earlier releases the code in these | |
| 371 // blobs does not create a new frame and are therefore virtually invisible | |
| 372 // to the stack walking code. In general these blobs extend the callers stack | |
| 373 // as needed for the conversion of argument locations. | |
| 374 | |
| 375 // When calling a c2i blob the code will always call the interpreter even if | |
| 376 // by the time we reach the blob there is compiled code available. This allows | |
| 377 // the blob to pass the incoming stack pointer (the sender sp) in a known | |
| 378 // location for the interpreter to record. This is used by the frame code | |
| 379 // to correct the sender code to match up with the stack pointer when the | |
| 380 // thread left the compiled code. In addition it allows the interpreter | |
| 381 // to remove the space the c2i adapter allocated to do it argument conversion. | |
| 382 | |
| 383 // Although a c2i blob will always run interpreted even if compiled code is | |
| 384 // present if we see that compiled code is present the compiled call site | |
| 385 // will be patched/re-resolved so that later calls will run compiled. | |
| 386 | |
| 387 // Aditionally a c2i blob need to have a unverified entry because it can be reached | |
| 388 // in situations where the call site is an inlined cache site and may go megamorphic. | |
| 389 | |
| 390 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed | |
| 391 // that the interpreter before it does any call dispatch will record the current | |
| 392 // stack pointer in the interpreter frame. On return it will restore the stack | |
| 393 // pointer as needed. This means the i2c adapter code doesn't need any special | |
| 394 // handshaking path with compiled code to keep the stack walking correct. | |
| 395 | |
| 396 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, | |
| 397 int total_args_passed, | |
| 398 int max_arg, | |
| 399 const BasicType *sig_bt, | |
|
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400 const VMRegPair *regs, |
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401 AdapterFingerPrint* fingerprint); |
| 0 | 402 |
| 403 // OSR support | |
| 404 | |
| 405 // OSR_migration_begin will extract the jvm state from an interpreter | |
| 406 // frame (locals, monitors) and store the data in a piece of C heap | |
| 407 // storage. This then allows the interpreter frame to be removed from the | |
| 408 // stack and the OSR nmethod to be called. That method is called with a | |
| 409 // pointer to the C heap storage. This pointer is the return value from | |
| 410 // OSR_migration_begin. | |
| 411 | |
| 412 static intptr_t* OSR_migration_begin( JavaThread *thread); | |
| 413 | |
| 414 // OSR_migration_end is a trivial routine. It is called after the compiled | |
| 415 // method has extracted the jvm state from the C heap that OSR_migration_begin | |
| 416 // created. It's entire job is to simply free this storage. | |
| 417 static void OSR_migration_end ( intptr_t* buf); | |
| 418 | |
| 419 // Convert a sig into a calling convention register layout | |
| 420 // and find interesting things about it. | |
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421 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, int *arg_size); |
| 0 | 422 static VMReg name_for_receiver(); |
| 423 | |
| 424 // "Top of Stack" slots that may be unused by the calling convention but must | |
| 425 // otherwise be preserved. | |
| 426 // On Intel these are not necessary and the value can be zero. | |
| 427 // On Sparc this describes the words reserved for storing a register window | |
| 428 // when an interrupt occurs. | |
| 429 static uint out_preserve_stack_slots(); | |
| 430 | |
| 431 // Save and restore a native result | |
| 432 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
| 433 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
| 434 | |
| 435 // Generate a native wrapper for a given method. The method takes arguments | |
| 436 // in the Java compiled code convention, marshals them to the native | |
| 437 // convention (handlizes oops, etc), transitions to native, makes the call, | |
| 438 // returns to java state (possibly blocking), unhandlizes any result and | |
| 439 // returns. | |
| 440 static nmethod *generate_native_wrapper(MacroAssembler* masm, | |
| 441 methodHandle method, | |
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442 int compile_id, |
| 0 | 443 int total_args_passed, |
| 444 int max_arg, | |
| 445 BasicType *sig_bt, | |
| 446 VMRegPair *regs, | |
| 447 BasicType ret_type ); | |
| 448 | |
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449 #ifdef HAVE_DTRACE_H |
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450 // Generate a dtrace wrapper for a given method. The method takes arguments |
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451 // in the Java compiled code convention, marshals them to the native |
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452 // convention (handlizes oops, etc), transitions to native, makes the call, |
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453 // returns to java state (possibly blocking), unhandlizes any result and |
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454 // returns. |
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455 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, |
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456 methodHandle method); |
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457 |
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458 // dtrace support to convert a Java string to utf8 |
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459 static void get_utf(oopDesc* src, address dst); |
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460 #endif // def HAVE_DTRACE_H |
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461 |
| 0 | 462 // A compiled caller has just called the interpreter, but compiled code |
| 463 // exists. Patch the caller so he no longer calls into the interpreter. | |
| 464 static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); | |
| 465 | |
| 466 // Slow-path Locking and Unlocking | |
| 467 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); | |
| 468 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); | |
| 469 | |
| 470 // Resolving of calls | |
| 471 static address resolve_static_call_C (JavaThread *thread); | |
| 472 static address resolve_virtual_call_C (JavaThread *thread); | |
| 473 static address resolve_opt_virtual_call_C(JavaThread *thread); | |
| 474 | |
| 475 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) | |
| 476 static void slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 477 oopDesc* dest, jint dest_pos, | |
| 478 jint length, JavaThread* thread); | |
| 479 | |
| 480 // handle ic miss with caller being compiled code | |
| 481 // wrong method handling (inline cache misses, zombie methods) | |
| 482 static address handle_wrong_method(JavaThread* thread); | |
| 483 static address handle_wrong_method_ic_miss(JavaThread* thread); | |
| 484 | |
| 485 #ifndef PRODUCT | |
| 486 | |
| 487 // Collect and print inline cache miss statistics | |
| 488 private: | |
| 489 enum { maxICmiss_count = 100 }; | |
| 490 static int _ICmiss_index; // length of IC miss histogram | |
| 491 static int _ICmiss_count[maxICmiss_count]; // miss counts | |
| 492 static address _ICmiss_at[maxICmiss_count]; // miss addresses | |
| 493 static void trace_ic_miss(address at); | |
| 494 | |
| 495 public: | |
| 496 static int _monitor_enter_ctr; // monitor enter slow | |
| 497 static int _monitor_exit_ctr; // monitor exit slow | |
| 498 static int _throw_null_ctr; // throwing a null-pointer exception | |
| 499 static int _ic_miss_ctr; // total # of IC misses | |
| 500 static int _wrong_method_ctr; | |
| 501 static int _resolve_static_ctr; | |
| 502 static int _resolve_virtual_ctr; | |
| 503 static int _resolve_opt_virtual_ctr; | |
| 504 static int _implicit_null_throws; | |
| 505 static int _implicit_div0_throws; | |
| 506 | |
| 507 static int _jbyte_array_copy_ctr; // Slow-path byte array copy | |
| 508 static int _jshort_array_copy_ctr; // Slow-path short array copy | |
| 509 static int _jint_array_copy_ctr; // Slow-path int array copy | |
| 510 static int _jlong_array_copy_ctr; // Slow-path long array copy | |
| 511 static int _oop_array_copy_ctr; // Slow-path oop array copy | |
| 512 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast | |
| 513 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks | |
| 514 static int _generic_array_copy_ctr; // Slow-path includes type decoding | |
| 515 static int _slow_array_copy_ctr; // Slow-path failed out to a method call | |
| 516 | |
| 517 static int _new_instance_ctr; // 'new' object requires GC | |
| 518 static int _new_array_ctr; // 'new' array requires GC | |
| 519 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; | |
| 520 static int _find_handler_ctr; // find exception handler | |
| 521 static int _rethrow_ctr; // rethrow exception | |
| 522 static int _mon_enter_stub_ctr; // monitor enter stub | |
| 523 static int _mon_exit_stub_ctr; // monitor exit stub | |
| 524 static int _mon_enter_ctr; // monitor enter slow | |
| 525 static int _mon_exit_ctr; // monitor exit slow | |
| 526 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check | |
| 527 | |
| 528 // Statistics code | |
| 529 // stats for "normal" compiled calls (non-interface) | |
| 530 static int _nof_normal_calls; // total # of calls | |
| 531 static int _nof_optimized_calls; // total # of statically-bound calls | |
| 532 static int _nof_inlined_calls; // total # of inlined normal calls | |
| 533 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) | |
| 534 static int _nof_inlined_static_calls; // total # of inlined static calls | |
| 535 // stats for compiled interface calls | |
| 536 static int _nof_interface_calls; // total # of compiled calls | |
| 537 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls | |
| 538 static int _nof_inlined_interface_calls; // total # of inlined interface calls | |
| 539 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls | |
| 540 // stats for runtime exceptions | |
| 541 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining | |
| 542 | |
| 543 public: // for compiler | |
| 544 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } | |
| 545 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } | |
| 546 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } | |
| 547 static address nof_static_calls_addr() { return (address)&_nof_static_calls; } | |
| 548 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } | |
| 549 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } | |
| 550 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } | |
| 551 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } | |
| 552 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } | |
| 553 static void print_call_statistics(int comp_total); | |
| 554 static void print_statistics(); | |
| 555 static void print_ic_miss_histogram(); | |
| 556 | |
| 557 #endif // PRODUCT | |
| 558 }; | |
| 559 | |
| 560 | |
| 561 // --------------------------------------------------------------------------- | |
| 562 // Implementation of AdapterHandlerLibrary | |
| 563 // | |
| 564 // This library manages argument marshaling adapters and native wrappers. | |
| 565 // There are 2 flavors of adapters: I2C and C2I. | |
| 566 // | |
| 1748 | 567 // The I2C flavor takes a stock interpreted call setup, marshals the |
| 568 // arguments for a Java-compiled call, and jumps to Rmethod-> code()-> | |
| 569 // code_begin(). It is broken to call it without an nmethod assigned. | |
| 570 // The usual behavior is to lift any register arguments up out of the | |
| 571 // stack and possibly re-pack the extra arguments to be contigious. | |
| 572 // I2C adapters will save what the interpreter's stack pointer will be | |
| 573 // after arguments are popped, then adjust the interpreter's frame | |
| 574 // size to force alignment and possibly to repack the arguments. | |
| 575 // After re-packing, it jumps to the compiled code start. There are | |
| 576 // no safepoints in this adapter code and a GC cannot happen while | |
| 577 // marshaling is in progress. | |
| 0 | 578 // |
| 579 // The C2I flavor takes a stock compiled call setup plus the target method in | |
| 580 // Rmethod, marshals the arguments for an interpreted call and jumps to | |
| 581 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been | |
| 582 // setup. Compiled frames are fixed-size and the args are likely not in the | |
| 583 // right place. Hence all the args will likely be copied into the | |
| 584 // interpreter's frame, forcing that frame to grow. The compiled frame's | |
| 585 // outgoing stack args will be dead after the copy. | |
| 586 // | |
| 587 // Native wrappers, like adapters, marshal arguments. Unlike adapters they | |
| 588 // also perform an offical frame push & pop. They have a call to the native | |
| 589 // routine in their middles and end in a return (instead of ending in a jump). | |
| 590 // The native wrappers are stored in real nmethods instead of the BufferBlobs | |
| 591 // used by the adapters. The code generation happens here because it's very | |
| 592 // similar to what the adapters have to do. | |
| 593 | |
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594 class AdapterHandlerEntry : public BasicHashtableEntry { |
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595 friend class AdapterHandlerTable; |
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596 |
| 0 | 597 private: |
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598 AdapterFingerPrint* _fingerprint; |
| 0 | 599 address _i2c_entry; |
| 600 address _c2i_entry; | |
| 601 address _c2i_unverified_entry; | |
| 602 | |
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603 #ifdef ASSERT |
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604 // Captures code and signature used to generate this adapter when |
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605 // verifing adapter equivalence. |
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606 unsigned char* _saved_code; |
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607 int _code_length; |
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608 BasicType* _saved_sig; |
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609 int _total_args_passed; |
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610 #endif |
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611 |
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612 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
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613 _fingerprint = fingerprint; |
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614 _i2c_entry = i2c_entry; |
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615 _c2i_entry = c2i_entry; |
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616 _c2i_unverified_entry = c2i_unverified_entry; |
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617 #ifdef ASSERT |
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618 _saved_code = NULL; |
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619 _code_length = 0; |
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620 _saved_sig = NULL; |
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621 _total_args_passed = 0; |
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622 #endif |
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623 } |
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624 |
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625 void deallocate(); |
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626 |
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627 // should never be used |
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628 AdapterHandlerEntry(); |
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629 |
| 0 | 630 public: |
| 631 address get_i2c_entry() { return _i2c_entry; } | |
| 632 address get_c2i_entry() { return _c2i_entry; } | |
| 633 address get_c2i_unverified_entry() { return _c2i_unverified_entry; } | |
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634 |
| 0 | 635 void relocate(address new_base); |
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636 |
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637 AdapterFingerPrint* fingerprint() { return _fingerprint; } |
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638 |
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639 AdapterHandlerEntry* next() { |
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640 return (AdapterHandlerEntry*)BasicHashtableEntry::next(); |
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641 } |
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642 |
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643 #ifdef ASSERT |
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644 // Used to verify that code generated for shared adapters is equivalent |
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645 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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646 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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647 #endif |
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648 |
| 0 | 649 void print(); |
| 650 }; | |
| 651 | |
| 652 class AdapterHandlerLibrary: public AllStatic { | |
| 653 private: | |
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654 static BufferBlob* _buffer; // the temporary code buffer in CodeCache |
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655 static AdapterHandlerTable* _adapters; |
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656 static AdapterHandlerEntry* _abstract_method_handler; |
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657 static BufferBlob* buffer_blob(); |
| 0 | 658 static void initialize(); |
| 659 | |
| 660 public: | |
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661 |
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662 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, |
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663 address i2c_entry, address c2i_entry, address c2i_unverified_entry); |
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664 static nmethod* create_native_wrapper(methodHandle method, int compile_id); |
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665 static AdapterHandlerEntry* get_adapter(methodHandle method); |
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666 |
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667 #ifdef HAVE_DTRACE_H |
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668 static nmethod* create_dtrace_nmethod (methodHandle method); |
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669 #endif // HAVE_DTRACE_H |
| 0 | 670 |
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671 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); } |
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672 static void print_handler_on(outputStream* st, CodeBlob* b); |
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673 static bool contains(CodeBlob* b); |
| 0 | 674 #ifndef PRODUCT |
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675 static void print_statistics(); |
| 0 | 676 #endif /* PRODUCT */ |
| 677 | |
| 678 }; | |
| 1972 | 679 |
| 680 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |