Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.hpp @ 4155:394404b2d9bd
Removed strict requirement for GRAAL environment variable. It only needs to be set now if the graal directory is not in the directory hierarchy of GraalVM JDK.
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Wed, 21 Dec 2011 11:25:27 +0100 |
| parents | 04b9a2566eec |
| children | 33df1aeaebbf |
| 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 { | |
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48 friend class VMStructs; |
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49 |
| 0 | 50 private: |
| 51 static methodHandle resolve_sub_helper(JavaThread *thread, | |
| 52 bool is_virtual, | |
| 53 bool is_optimized, TRAPS); | |
| 54 | |
| 55 // Shared stub locations | |
| 56 | |
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57 static RuntimeStub* _wrong_method_blob; |
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58 static RuntimeStub* _ic_miss_blob; |
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59 static RuntimeStub* _resolve_opt_virtual_call_blob; |
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60 static RuntimeStub* _resolve_virtual_call_blob; |
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61 static RuntimeStub* _resolve_static_call_blob; |
| 0 | 62 |
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63 static DeoptimizationBlob* _deopt_blob; |
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64 static RicochetBlob* _ricochet_blob; |
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65 |
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66 static SafepointBlob* _polling_page_safepoint_handler_blob; |
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67 static SafepointBlob* _polling_page_return_handler_blob; |
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68 |
| 0 | 69 #ifdef COMPILER2 |
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70 static UncommonTrapBlob* _uncommon_trap_blob; |
| 0 | 71 #endif // COMPILER2 |
| 72 | |
| 73 #ifndef PRODUCT | |
| 74 // Counters | |
| 75 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) | |
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76 #endif // !PRODUCT |
| 0 | 77 |
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78 private: |
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79 static SafepointBlob* generate_handler_blob(address call_ptr, bool cause_return); |
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80 static RuntimeStub* generate_resolve_blob(address destination, const char* name); |
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81 |
| 0 | 82 public: |
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83 static void generate_stubs(void); |
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84 |
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85 // max bytes for each dtrace string parameter |
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86 enum { max_dtrace_string_size = 256 }; |
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87 |
| 0 | 88 // The following arithmetic routines are used on platforms that do |
| 89 // not have machine instructions to implement their functionality. | |
| 90 // Do not remove these. | |
| 91 | |
| 92 // long arithmetics | |
| 93 static jlong lmul(jlong y, jlong x); | |
| 94 static jlong ldiv(jlong y, jlong x); | |
| 95 static jlong lrem(jlong y, jlong x); | |
| 96 | |
| 97 // float and double remainder | |
| 98 static jfloat frem(jfloat x, jfloat y); | |
| 99 static jdouble drem(jdouble x, jdouble y); | |
| 100 | |
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101 #ifdef __SOFTFP__ |
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102 static jfloat fadd(jfloat x, jfloat y); |
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103 static jfloat fsub(jfloat x, jfloat y); |
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104 static jfloat fmul(jfloat x, jfloat y); |
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105 static jfloat fdiv(jfloat x, jfloat y); |
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106 |
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107 static jdouble dadd(jdouble x, jdouble y); |
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108 static jdouble dsub(jdouble x, jdouble y); |
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109 static jdouble dmul(jdouble x, jdouble y); |
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110 static jdouble ddiv(jdouble x, jdouble y); |
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111 #endif // __SOFTFP__ |
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112 |
| 0 | 113 // float conversion (needs to set appropriate rounding mode) |
| 114 static jint f2i (jfloat x); | |
| 115 static jlong f2l (jfloat x); | |
| 116 static jint d2i (jdouble x); | |
| 117 static jlong d2l (jdouble x); | |
| 118 static jfloat d2f (jdouble x); | |
| 119 static jfloat l2f (jlong x); | |
| 120 static jdouble l2d (jlong x); | |
| 121 | |
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122 #ifdef __SOFTFP__ |
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123 static jfloat i2f (jint x); |
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124 static jdouble i2d (jint x); |
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125 static jdouble f2d (jfloat x); |
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126 #endif // __SOFTFP__ |
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127 |
| 0 | 128 // double trigonometrics and transcendentals |
| 129 static jdouble dsin(jdouble x); | |
| 130 static jdouble dcos(jdouble x); | |
| 131 static jdouble dtan(jdouble x); | |
| 132 static jdouble dlog(jdouble x); | |
| 133 static jdouble dlog10(jdouble x); | |
| 134 static jdouble dexp(jdouble x); | |
| 135 static jdouble dpow(jdouble x, jdouble y); | |
| 136 | |
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137 #if defined(__SOFTFP__) || defined(E500V2) |
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138 static double dabs(double f); |
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139 #endif |
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140 |
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141 #if defined(__SOFTFP__) || defined(PPC) |
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142 static double dsqrt(double f); |
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143 #endif |
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144 |
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145 #ifdef __SOFTFP__ |
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146 // C++ compiler generates soft float instructions as well as passing |
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147 // float and double in registers. |
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148 static int fcmpl(float x, float y); |
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149 static int fcmpg(float x, float y); |
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150 static int dcmpl(double x, double y); |
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151 static int dcmpg(double x, double y); |
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152 |
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153 static int unordered_fcmplt(float x, float y); |
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154 static int unordered_dcmplt(double x, double y); |
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155 static int unordered_fcmple(float x, float y); |
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156 static int unordered_dcmple(double x, double y); |
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157 static int unordered_fcmpge(float x, float y); |
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158 static int unordered_dcmpge(double x, double y); |
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159 static int unordered_fcmpgt(float x, float y); |
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160 static int unordered_dcmpgt(double x, double y); |
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161 |
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162 static float fneg(float f); |
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163 static double dneg(double f); |
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164 #endif |
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165 |
| 0 | 166 // exception handling across interpreter/compiler boundaries |
| 1295 | 167 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address); |
| 168 static address exception_handler_for_return_address(JavaThread* thread, address return_address); | |
| 0 | 169 |
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170 #ifndef SERIALGC |
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171 // G1 write barriers |
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172 static void g1_wb_pre(oopDesc* orig, JavaThread *thread); |
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173 static void g1_wb_post(void* card_addr, JavaThread* thread); |
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174 #endif // !SERIALGC |
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175 |
| 0 | 176 // exception handling and implicit exceptions |
| 177 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 178 bool force_unwind, bool top_frame_only); | |
| 179 enum ImplicitExceptionKind { | |
| 180 IMPLICIT_NULL, | |
| 181 IMPLICIT_DIVIDE_BY_ZERO, | |
| 182 STACK_OVERFLOW | |
| 183 }; | |
| 184 static void throw_AbstractMethodError(JavaThread* thread); | |
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185 static void throw_IncompatibleClassChangeError(JavaThread* thread); |
| 0 | 186 static void throw_ArithmeticException(JavaThread* thread); |
| 187 static void throw_NullPointerException(JavaThread* thread); | |
| 188 static void throw_NullPointerException_at_call(JavaThread* thread); | |
| 189 static void throw_StackOverflowError(JavaThread* thread); | |
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190 static address deoptimization_continuation(JavaThread* thread, address pc, nmethod* nm); |
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191 static void throw_WrongMethodTypeException(JavaThread* thread, oopDesc* required, oopDesc* actual); |
| 0 | 192 static address continuation_for_implicit_exception(JavaThread* thread, |
| 193 address faulting_pc, | |
| 194 ImplicitExceptionKind exception_kind); | |
| 195 | |
| 196 // Shared stub locations | |
| 197 static address get_poll_stub(address pc); | |
| 198 | |
| 199 static address get_ic_miss_stub() { | |
| 200 assert(_ic_miss_blob!= NULL, "oops"); | |
| 1748 | 201 return _ic_miss_blob->entry_point(); |
| 0 | 202 } |
| 203 | |
| 204 static address get_handle_wrong_method_stub() { | |
| 205 assert(_wrong_method_blob!= NULL, "oops"); | |
| 1748 | 206 return _wrong_method_blob->entry_point(); |
| 0 | 207 } |
| 208 | |
| 209 #ifdef COMPILER2 | |
| 210 static void generate_uncommon_trap_blob(void); | |
| 211 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } | |
| 212 #endif // COMPILER2 | |
| 213 | |
| 214 static address get_resolve_opt_virtual_call_stub(){ | |
| 215 assert(_resolve_opt_virtual_call_blob != NULL, "oops"); | |
| 1748 | 216 return _resolve_opt_virtual_call_blob->entry_point(); |
| 0 | 217 } |
| 218 static address get_resolve_virtual_call_stub() { | |
| 219 assert(_resolve_virtual_call_blob != NULL, "oops"); | |
| 1748 | 220 return _resolve_virtual_call_blob->entry_point(); |
| 0 | 221 } |
| 222 static address get_resolve_static_call_stub() { | |
| 223 assert(_resolve_static_call_blob != NULL, "oops"); | |
| 1748 | 224 return _resolve_static_call_blob->entry_point(); |
| 0 | 225 } |
| 226 | |
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227 static RicochetBlob* ricochet_blob() { |
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228 #ifdef X86 |
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229 // Currently only implemented on x86 |
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230 assert(!EnableInvokeDynamic || _ricochet_blob != NULL, "oops"); |
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231 #endif |
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232 return _ricochet_blob; |
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233 } |
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234 |
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235 static void generate_ricochet_blob(); |
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236 |
| 0 | 237 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } |
| 238 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } | |
| 239 | |
| 240 // Counters | |
| 241 #ifndef PRODUCT | |
| 242 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } | |
| 243 #endif // PRODUCT | |
| 244 | |
| 245 // Helper routine for full-speed JVMTI exception throwing support | |
| 246 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); | |
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247 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL); |
| 0 | 248 |
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249 // RedefineClasses() tracing support for obsolete method entry |
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250 static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m); |
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251 |
| 0 | 252 // To be used as the entry point for unresolved native methods. |
| 253 static address native_method_throw_unsatisfied_link_error_entry(); | |
| 254 | |
| 255 // bytecode tracing is only used by the TraceBytecodes | |
| 256 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; | |
| 257 | |
| 258 // Used to back off a spin lock that is under heavy contention | |
| 259 static void yield_all(JavaThread* thread, int attempts = 0); | |
| 260 | |
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261 static oop retrieve_receiver( Symbol* sig, frame caller ); |
| 0 | 262 |
| 263 static void register_finalizer(JavaThread* thread, oopDesc* obj); | |
| 264 | |
| 265 // dtrace notifications | |
| 266 static int dtrace_object_alloc(oopDesc* o); | |
| 267 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); | |
| 268 static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m); | |
| 269 static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m); | |
| 270 | |
| 271 // Utility method for retrieving the Java thread id, returns 0 if the | |
| 272 // thread is not a well formed Java thread. | |
| 273 static jlong get_java_tid(Thread* thread); | |
| 274 | |
| 275 | |
| 276 // used by native wrappers to reenable yellow if overflow happened in native code | |
| 277 static void reguard_yellow_pages(); | |
| 278 | |
| 279 /** | |
| 280 * Fill in the "X cannot be cast to a Y" message for ClassCastException | |
| 281 * | |
| 282 * @param thr the current thread | |
| 283 * @param name the name of the class of the object attempted to be cast | |
| 284 * @return the dynamically allocated exception message (must be freed | |
| 285 * by the caller using a resource mark) | |
| 286 * | |
| 287 * BCP must refer to the current 'checkcast' opcode for the frame | |
| 288 * on top of the stack. | |
| 289 * The caller (or one of it's callers) must use a ResourceMark | |
| 290 * in order to correctly free the result. | |
| 291 */ | |
| 292 static char* generate_class_cast_message(JavaThread* thr, const char* name); | |
| 293 | |
| 294 /** | |
| 710 | 295 * Fill in the message for a WrongMethodTypeException |
| 296 * | |
| 297 * @param thr the current thread | |
| 298 * @param mtype (optional) expected method type (or argument class) | |
| 299 * @param mhandle (optional) actual method handle (or argument) | |
| 300 * @return the dynamically allocated exception message | |
| 301 * | |
| 302 * BCP for the frame on top of the stack must refer to an | |
| 303 * 'invokevirtual' op for a method handle, or an 'invokedyamic' op. | |
| 304 * The caller (or one of its callers) must use a ResourceMark | |
| 305 * in order to correctly free the result. | |
| 306 */ | |
| 307 static char* generate_wrong_method_type_message(JavaThread* thr, | |
| 308 oopDesc* mtype = NULL, | |
| 309 oopDesc* mhandle = NULL); | |
| 310 | |
| 311 /** Return non-null if the mtype is a klass or Class, not a MethodType. */ | |
| 312 static oop wrong_method_type_is_for_single_argument(JavaThread* thr, | |
| 313 oopDesc* mtype); | |
| 314 | |
| 315 /** | |
| 0 | 316 * Fill in the "X cannot be cast to a Y" message for ClassCastException |
| 317 * | |
| 318 * @param name the name of the class of the object attempted to be cast | |
| 319 * @param klass the name of the target klass attempt | |
| 710 | 320 * @param gripe the specific kind of problem being reported |
| 0 | 321 * @return the dynamically allocated exception message (must be freed |
| 322 * by the caller using a resource mark) | |
| 323 * | |
| 324 * This version does not require access the frame, so it can be called | |
| 325 * from interpreted code | |
| 326 * The caller (or one of it's callers) must use a ResourceMark | |
| 327 * in order to correctly free the result. | |
| 328 */ | |
| 710 | 329 static char* generate_class_cast_message(const char* name, const char* klass, |
| 330 const char* gripe = " cannot be cast to "); | |
| 0 | 331 |
| 332 // Resolves a call site- may patch in the destination of the call into the | |
| 333 // compiled code. | |
| 334 static methodHandle resolve_helper(JavaThread *thread, | |
| 335 bool is_virtual, | |
| 336 bool is_optimized, TRAPS); | |
| 337 | |
| 338 private: | |
| 339 // deopt blob | |
| 340 static void generate_deopt_blob(void); | |
| 341 | |
| 342 public: | |
| 343 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } | |
| 344 | |
| 345 // Resets a call-site in compiled code so it will get resolved again. | |
| 346 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); | |
| 347 | |
| 348 // In the code prolog, if the klass comparison fails, the inline cache | |
| 349 // misses and the call site is patched to megamorphic | |
| 350 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); | |
| 351 | |
| 352 // Find the method that called us. | |
| 353 static methodHandle find_callee_method(JavaThread* thread, TRAPS); | |
| 354 | |
| 355 | |
| 356 private: | |
| 357 static Handle find_callee_info(JavaThread* thread, | |
| 358 Bytecodes::Code& bc, | |
| 359 CallInfo& callinfo, TRAPS); | |
| 360 static Handle find_callee_info_helper(JavaThread* thread, | |
| 361 vframeStream& vfst, | |
| 362 Bytecodes::Code& bc, | |
| 363 CallInfo& callinfo, TRAPS); | |
| 364 | |
| 365 static address clean_virtual_call_entry(); | |
| 366 static address clean_opt_virtual_call_entry(); | |
| 367 static address clean_static_call_entry(); | |
| 368 | |
| 369 public: | |
| 370 | |
| 371 // Read the array of BasicTypes from a Java signature, and compute where | |
| 372 // compiled Java code would like to put the results. Values in reg_lo and | |
| 373 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are | |
| 374 // registers, those above refer to 4-byte stack slots. All stack slots are | |
| 375 // based off of the window top. SharedInfo::stack0 refers to the first usable | |
| 376 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word | |
| 377 // 4-bytes higher. So for sparc because the register window save area is at | |
| 378 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 | |
| 379 // will be just above it. ( | |
| 380 // return value is the maximum number of VMReg stack slots the convention will use. | |
| 381 static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing); | |
| 382 | |
| 383 // Ditto except for calling C | |
| 384 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); | |
| 385 | |
| 386 // Generate I2C and C2I adapters. These adapters are simple argument marshalling | |
| 387 // blobs. Unlike adapters in the tiger and earlier releases the code in these | |
| 388 // blobs does not create a new frame and are therefore virtually invisible | |
| 389 // to the stack walking code. In general these blobs extend the callers stack | |
| 390 // as needed for the conversion of argument locations. | |
| 391 | |
| 392 // When calling a c2i blob the code will always call the interpreter even if | |
| 393 // by the time we reach the blob there is compiled code available. This allows | |
| 394 // the blob to pass the incoming stack pointer (the sender sp) in a known | |
| 395 // location for the interpreter to record. This is used by the frame code | |
| 396 // to correct the sender code to match up with the stack pointer when the | |
| 397 // thread left the compiled code. In addition it allows the interpreter | |
| 398 // to remove the space the c2i adapter allocated to do it argument conversion. | |
| 399 | |
| 400 // Although a c2i blob will always run interpreted even if compiled code is | |
| 401 // present if we see that compiled code is present the compiled call site | |
| 402 // will be patched/re-resolved so that later calls will run compiled. | |
| 403 | |
| 404 // Aditionally a c2i blob need to have a unverified entry because it can be reached | |
| 405 // in situations where the call site is an inlined cache site and may go megamorphic. | |
| 406 | |
| 407 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed | |
| 408 // that the interpreter before it does any call dispatch will record the current | |
| 409 // stack pointer in the interpreter frame. On return it will restore the stack | |
| 410 // pointer as needed. This means the i2c adapter code doesn't need any special | |
| 411 // handshaking path with compiled code to keep the stack walking correct. | |
| 412 | |
| 413 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, | |
| 414 int total_args_passed, | |
| 415 int max_arg, | |
| 416 const BasicType *sig_bt, | |
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417 const VMRegPair *regs, |
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418 AdapterFingerPrint* fingerprint); |
| 0 | 419 |
| 420 // OSR support | |
| 421 | |
| 422 // OSR_migration_begin will extract the jvm state from an interpreter | |
| 423 // frame (locals, monitors) and store the data in a piece of C heap | |
| 424 // storage. This then allows the interpreter frame to be removed from the | |
| 425 // stack and the OSR nmethod to be called. That method is called with a | |
| 426 // pointer to the C heap storage. This pointer is the return value from | |
| 427 // OSR_migration_begin. | |
| 428 | |
| 429 static intptr_t* OSR_migration_begin( JavaThread *thread); | |
| 430 | |
| 431 // OSR_migration_end is a trivial routine. It is called after the compiled | |
| 432 // method has extracted the jvm state from the C heap that OSR_migration_begin | |
| 433 // created. It's entire job is to simply free this storage. | |
| 434 static void OSR_migration_end ( intptr_t* buf); | |
| 435 | |
| 436 // Convert a sig into a calling convention register layout | |
| 437 // and find interesting things about it. | |
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438 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, int *arg_size); |
| 0 | 439 static VMReg name_for_receiver(); |
| 440 | |
| 441 // "Top of Stack" slots that may be unused by the calling convention but must | |
| 442 // otherwise be preserved. | |
| 443 // On Intel these are not necessary and the value can be zero. | |
| 444 // On Sparc this describes the words reserved for storing a register window | |
| 445 // when an interrupt occurs. | |
| 446 static uint out_preserve_stack_slots(); | |
| 447 | |
| 448 // Save and restore a native result | |
| 449 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
| 450 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
| 451 | |
| 452 // Generate a native wrapper for a given method. The method takes arguments | |
| 453 // in the Java compiled code convention, marshals them to the native | |
| 454 // convention (handlizes oops, etc), transitions to native, makes the call, | |
| 455 // returns to java state (possibly blocking), unhandlizes any result and | |
| 456 // returns. | |
| 457 static nmethod *generate_native_wrapper(MacroAssembler* masm, | |
| 458 methodHandle method, | |
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459 int compile_id, |
| 0 | 460 int total_args_passed, |
| 461 int max_arg, | |
| 462 BasicType *sig_bt, | |
| 463 VMRegPair *regs, | |
| 464 BasicType ret_type ); | |
| 465 | |
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466 #ifdef HAVE_DTRACE_H |
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467 // Generate a dtrace wrapper for a given method. The method takes arguments |
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468 // in the Java compiled code convention, marshals them to the native |
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469 // convention (handlizes oops, etc), transitions to native, makes the call, |
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470 // returns to java state (possibly blocking), unhandlizes any result and |
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471 // returns. |
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472 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, |
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473 methodHandle method); |
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474 |
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475 // dtrace support to convert a Java string to utf8 |
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476 static void get_utf(oopDesc* src, address dst); |
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477 #endif // def HAVE_DTRACE_H |
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478 |
| 0 | 479 // A compiled caller has just called the interpreter, but compiled code |
| 480 // exists. Patch the caller so he no longer calls into the interpreter. | |
| 481 static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); | |
| 482 | |
| 483 // Slow-path Locking and Unlocking | |
| 484 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); | |
| 485 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); | |
| 486 | |
| 487 // Resolving of calls | |
| 488 static address resolve_static_call_C (JavaThread *thread); | |
| 489 static address resolve_virtual_call_C (JavaThread *thread); | |
| 490 static address resolve_opt_virtual_call_C(JavaThread *thread); | |
| 491 | |
| 492 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) | |
| 493 static void slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 494 oopDesc* dest, jint dest_pos, | |
| 495 jint length, JavaThread* thread); | |
| 496 | |
| 497 // handle ic miss with caller being compiled code | |
| 498 // wrong method handling (inline cache misses, zombie methods) | |
| 499 static address handle_wrong_method(JavaThread* thread); | |
| 500 static address handle_wrong_method_ic_miss(JavaThread* thread); | |
| 501 | |
| 502 #ifndef PRODUCT | |
| 503 | |
| 504 // Collect and print inline cache miss statistics | |
| 505 private: | |
| 506 enum { maxICmiss_count = 100 }; | |
| 507 static int _ICmiss_index; // length of IC miss histogram | |
| 508 static int _ICmiss_count[maxICmiss_count]; // miss counts | |
| 509 static address _ICmiss_at[maxICmiss_count]; // miss addresses | |
| 510 static void trace_ic_miss(address at); | |
| 511 | |
| 512 public: | |
| 513 static int _monitor_enter_ctr; // monitor enter slow | |
| 514 static int _monitor_exit_ctr; // monitor exit slow | |
| 515 static int _throw_null_ctr; // throwing a null-pointer exception | |
| 516 static int _ic_miss_ctr; // total # of IC misses | |
| 517 static int _wrong_method_ctr; | |
| 518 static int _resolve_static_ctr; | |
| 519 static int _resolve_virtual_ctr; | |
| 520 static int _resolve_opt_virtual_ctr; | |
| 521 static int _implicit_null_throws; | |
| 522 static int _implicit_div0_throws; | |
| 523 | |
| 524 static int _jbyte_array_copy_ctr; // Slow-path byte array copy | |
| 525 static int _jshort_array_copy_ctr; // Slow-path short array copy | |
| 526 static int _jint_array_copy_ctr; // Slow-path int array copy | |
| 527 static int _jlong_array_copy_ctr; // Slow-path long array copy | |
| 528 static int _oop_array_copy_ctr; // Slow-path oop array copy | |
| 529 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast | |
| 530 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks | |
| 531 static int _generic_array_copy_ctr; // Slow-path includes type decoding | |
| 532 static int _slow_array_copy_ctr; // Slow-path failed out to a method call | |
| 533 | |
| 534 static int _new_instance_ctr; // 'new' object requires GC | |
| 535 static int _new_array_ctr; // 'new' array requires GC | |
| 536 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; | |
| 537 static int _find_handler_ctr; // find exception handler | |
| 538 static int _rethrow_ctr; // rethrow exception | |
| 539 static int _mon_enter_stub_ctr; // monitor enter stub | |
| 540 static int _mon_exit_stub_ctr; // monitor exit stub | |
| 541 static int _mon_enter_ctr; // monitor enter slow | |
| 542 static int _mon_exit_ctr; // monitor exit slow | |
| 543 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check | |
| 544 | |
| 545 // Statistics code | |
| 546 // stats for "normal" compiled calls (non-interface) | |
| 547 static int _nof_normal_calls; // total # of calls | |
| 548 static int _nof_optimized_calls; // total # of statically-bound calls | |
| 549 static int _nof_inlined_calls; // total # of inlined normal calls | |
| 550 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) | |
| 551 static int _nof_inlined_static_calls; // total # of inlined static calls | |
| 552 // stats for compiled interface calls | |
| 553 static int _nof_interface_calls; // total # of compiled calls | |
| 554 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls | |
| 555 static int _nof_inlined_interface_calls; // total # of inlined interface calls | |
| 556 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls | |
| 557 // stats for runtime exceptions | |
| 558 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining | |
| 559 | |
| 560 public: // for compiler | |
| 561 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } | |
| 562 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } | |
| 563 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } | |
| 564 static address nof_static_calls_addr() { return (address)&_nof_static_calls; } | |
| 565 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } | |
| 566 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } | |
| 567 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } | |
| 568 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } | |
| 569 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } | |
| 570 static void print_call_statistics(int comp_total); | |
| 571 static void print_statistics(); | |
| 572 static void print_ic_miss_histogram(); | |
| 573 | |
| 574 #endif // PRODUCT | |
| 575 }; | |
| 576 | |
| 577 | |
| 578 // --------------------------------------------------------------------------- | |
| 579 // Implementation of AdapterHandlerLibrary | |
| 580 // | |
| 581 // This library manages argument marshaling adapters and native wrappers. | |
| 582 // There are 2 flavors of adapters: I2C and C2I. | |
| 583 // | |
| 1748 | 584 // The I2C flavor takes a stock interpreted call setup, marshals the |
| 585 // arguments for a Java-compiled call, and jumps to Rmethod-> code()-> | |
| 586 // code_begin(). It is broken to call it without an nmethod assigned. | |
| 587 // The usual behavior is to lift any register arguments up out of the | |
| 588 // stack and possibly re-pack the extra arguments to be contigious. | |
| 589 // I2C adapters will save what the interpreter's stack pointer will be | |
| 590 // after arguments are popped, then adjust the interpreter's frame | |
| 591 // size to force alignment and possibly to repack the arguments. | |
| 592 // After re-packing, it jumps to the compiled code start. There are | |
| 593 // no safepoints in this adapter code and a GC cannot happen while | |
| 594 // marshaling is in progress. | |
| 0 | 595 // |
| 596 // The C2I flavor takes a stock compiled call setup plus the target method in | |
| 597 // Rmethod, marshals the arguments for an interpreted call and jumps to | |
| 598 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been | |
| 599 // setup. Compiled frames are fixed-size and the args are likely not in the | |
| 600 // right place. Hence all the args will likely be copied into the | |
| 601 // interpreter's frame, forcing that frame to grow. The compiled frame's | |
| 602 // outgoing stack args will be dead after the copy. | |
| 603 // | |
| 604 // Native wrappers, like adapters, marshal arguments. Unlike adapters they | |
| 605 // also perform an offical frame push & pop. They have a call to the native | |
| 606 // routine in their middles and end in a return (instead of ending in a jump). | |
| 607 // The native wrappers are stored in real nmethods instead of the BufferBlobs | |
| 608 // used by the adapters. The code generation happens here because it's very | |
| 609 // similar to what the adapters have to do. | |
| 610 | |
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611 class AdapterHandlerEntry : public BasicHashtableEntry { |
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612 friend class AdapterHandlerTable; |
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613 |
| 0 | 614 private: |
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615 AdapterFingerPrint* _fingerprint; |
| 0 | 616 address _i2c_entry; |
| 617 address _c2i_entry; | |
| 618 address _c2i_unverified_entry; | |
| 619 | |
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620 #ifdef ASSERT |
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621 // Captures code and signature used to generate this adapter when |
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622 // verifing adapter equivalence. |
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623 unsigned char* _saved_code; |
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624 int _code_length; |
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625 BasicType* _saved_sig; |
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626 int _total_args_passed; |
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627 #endif |
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628 |
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629 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
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630 _fingerprint = fingerprint; |
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631 _i2c_entry = i2c_entry; |
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632 _c2i_entry = c2i_entry; |
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633 _c2i_unverified_entry = c2i_unverified_entry; |
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634 #ifdef ASSERT |
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635 _saved_code = NULL; |
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636 _code_length = 0; |
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637 _saved_sig = NULL; |
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638 _total_args_passed = 0; |
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639 #endif |
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640 } |
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641 |
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642 void deallocate(); |
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643 |
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644 // should never be used |
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645 AdapterHandlerEntry(); |
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646 |
| 0 | 647 public: |
| 648 address get_i2c_entry() { return _i2c_entry; } | |
| 649 address get_c2i_entry() { return _c2i_entry; } | |
| 650 address get_c2i_unverified_entry() { return _c2i_unverified_entry; } | |
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651 |
| 0 | 652 void relocate(address new_base); |
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653 |
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654 AdapterFingerPrint* fingerprint() { return _fingerprint; } |
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655 |
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656 AdapterHandlerEntry* next() { |
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657 return (AdapterHandlerEntry*)BasicHashtableEntry::next(); |
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658 } |
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659 |
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660 #ifdef ASSERT |
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661 // Used to verify that code generated for shared adapters is equivalent |
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662 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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663 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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664 #endif |
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665 |
| 0 | 666 void print(); |
| 667 }; | |
| 668 | |
| 669 class AdapterHandlerLibrary: public AllStatic { | |
| 670 private: | |
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671 static BufferBlob* _buffer; // the temporary code buffer in CodeCache |
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672 static AdapterHandlerTable* _adapters; |
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673 static AdapterHandlerEntry* _abstract_method_handler; |
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674 static BufferBlob* buffer_blob(); |
| 0 | 675 static void initialize(); |
| 676 | |
| 677 public: | |
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678 |
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679 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, |
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680 address i2c_entry, address c2i_entry, address c2i_unverified_entry); |
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681 static nmethod* create_native_wrapper(methodHandle method, int compile_id); |
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682 static AdapterHandlerEntry* get_adapter(methodHandle method); |
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683 |
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684 #ifdef HAVE_DTRACE_H |
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685 static nmethod* create_dtrace_nmethod (methodHandle method); |
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686 #endif // HAVE_DTRACE_H |
| 0 | 687 |
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688 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); } |
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689 static void print_handler_on(outputStream* st, CodeBlob* b); |
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690 static bool contains(CodeBlob* b); |
| 0 | 691 #ifndef PRODUCT |
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692 static void print_statistics(); |
| 0 | 693 #endif /* PRODUCT */ |
| 694 | |
| 695 }; | |
| 1972 | 696 |
| 697 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |