annotate src/share/vm/runtime/sharedRuntime.hpp @ 0:a61af66fc99e

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children f8236e79048a
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duke@0 1 /*
duke@0 2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
duke@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@0 4 *
duke@0 5 * This code is free software; you can redistribute it and/or modify it
duke@0 6 * under the terms of the GNU General Public License version 2 only, as
duke@0 7 * published by the Free Software Foundation.
duke@0 8 *
duke@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@0 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@0 13 * accompanied this code).
duke@0 14 *
duke@0 15 * You should have received a copy of the GNU General Public License version
duke@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@0 18 *
duke@0 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@0 20 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@0 21 * have any questions.
duke@0 22 *
duke@0 23 */
duke@0 24
duke@0 25 class AdapterHandlerEntry;
duke@0 26 class vframeStream;
duke@0 27
duke@0 28 // Runtime is the base class for various runtime interfaces
duke@0 29 // (InterpreterRuntime, CompilerRuntime, etc.). It provides
duke@0 30 // shared functionality such as exception forwarding (C++ to
duke@0 31 // Java exceptions), locking/unlocking mechanisms, statistical
duke@0 32 // information, etc.
duke@0 33
duke@0 34 class SharedRuntime: AllStatic {
duke@0 35 private:
duke@0 36 static methodHandle resolve_sub_helper(JavaThread *thread,
duke@0 37 bool is_virtual,
duke@0 38 bool is_optimized, TRAPS);
duke@0 39
duke@0 40 // Shared stub locations
duke@0 41
duke@0 42 static RuntimeStub* _wrong_method_blob;
duke@0 43 static RuntimeStub* _ic_miss_blob;
duke@0 44 static RuntimeStub* _resolve_opt_virtual_call_blob;
duke@0 45 static RuntimeStub* _resolve_virtual_call_blob;
duke@0 46 static RuntimeStub* _resolve_static_call_blob;
duke@0 47
duke@0 48 static SafepointBlob* _polling_page_safepoint_handler_blob;
duke@0 49 static SafepointBlob* _polling_page_return_handler_blob;
duke@0 50 #ifdef COMPILER2
duke@0 51 static ExceptionBlob* _exception_blob;
duke@0 52 static UncommonTrapBlob* _uncommon_trap_blob;
duke@0 53 #endif // COMPILER2
duke@0 54
duke@0 55 #ifndef PRODUCT
duke@0 56
duke@0 57 // Counters
duke@0 58 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable)
duke@0 59
duke@0 60 #endif // !PRODUCT
duke@0 61 public:
duke@0 62 // The following arithmetic routines are used on platforms that do
duke@0 63 // not have machine instructions to implement their functionality.
duke@0 64 // Do not remove these.
duke@0 65
duke@0 66 // long arithmetics
duke@0 67 static jlong lmul(jlong y, jlong x);
duke@0 68 static jlong ldiv(jlong y, jlong x);
duke@0 69 static jlong lrem(jlong y, jlong x);
duke@0 70
duke@0 71 // float and double remainder
duke@0 72 static jfloat frem(jfloat x, jfloat y);
duke@0 73 static jdouble drem(jdouble x, jdouble y);
duke@0 74
duke@0 75 // float conversion (needs to set appropriate rounding mode)
duke@0 76 static jint f2i (jfloat x);
duke@0 77 static jlong f2l (jfloat x);
duke@0 78 static jint d2i (jdouble x);
duke@0 79 static jlong d2l (jdouble x);
duke@0 80 static jfloat d2f (jdouble x);
duke@0 81 static jfloat l2f (jlong x);
duke@0 82 static jdouble l2d (jlong x);
duke@0 83
duke@0 84 // double trigonometrics and transcendentals
duke@0 85 static jdouble dsin(jdouble x);
duke@0 86 static jdouble dcos(jdouble x);
duke@0 87 static jdouble dtan(jdouble x);
duke@0 88 static jdouble dlog(jdouble x);
duke@0 89 static jdouble dlog10(jdouble x);
duke@0 90 static jdouble dexp(jdouble x);
duke@0 91 static jdouble dpow(jdouble x, jdouble y);
duke@0 92
duke@0 93
duke@0 94 // exception handling across interpreter/compiler boundaries
duke@0 95 static address raw_exception_handler_for_return_address(address return_address);
duke@0 96 static address exception_handler_for_return_address(address return_address);
duke@0 97
duke@0 98 // exception handling and implicit exceptions
duke@0 99 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception,
duke@0 100 bool force_unwind, bool top_frame_only);
duke@0 101 enum ImplicitExceptionKind {
duke@0 102 IMPLICIT_NULL,
duke@0 103 IMPLICIT_DIVIDE_BY_ZERO,
duke@0 104 STACK_OVERFLOW
duke@0 105 };
duke@0 106 static void throw_AbstractMethodError(JavaThread* thread);
duke@0 107 static void throw_ArithmeticException(JavaThread* thread);
duke@0 108 static void throw_NullPointerException(JavaThread* thread);
duke@0 109 static void throw_NullPointerException_at_call(JavaThread* thread);
duke@0 110 static void throw_StackOverflowError(JavaThread* thread);
duke@0 111 static address continuation_for_implicit_exception(JavaThread* thread,
duke@0 112 address faulting_pc,
duke@0 113 ImplicitExceptionKind exception_kind);
duke@0 114
duke@0 115 // Shared stub locations
duke@0 116 static address get_poll_stub(address pc);
duke@0 117
duke@0 118 static address get_ic_miss_stub() {
duke@0 119 assert(_ic_miss_blob!= NULL, "oops");
duke@0 120 return _ic_miss_blob->instructions_begin();
duke@0 121 }
duke@0 122
duke@0 123 static address get_handle_wrong_method_stub() {
duke@0 124 assert(_wrong_method_blob!= NULL, "oops");
duke@0 125 return _wrong_method_blob->instructions_begin();
duke@0 126 }
duke@0 127
duke@0 128 #ifdef COMPILER2
duke@0 129 static void generate_uncommon_trap_blob(void);
duke@0 130 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; }
duke@0 131 #endif // COMPILER2
duke@0 132
duke@0 133 static address get_resolve_opt_virtual_call_stub(){
duke@0 134 assert(_resolve_opt_virtual_call_blob != NULL, "oops");
duke@0 135 return _resolve_opt_virtual_call_blob->instructions_begin();
duke@0 136 }
duke@0 137 static address get_resolve_virtual_call_stub() {
duke@0 138 assert(_resolve_virtual_call_blob != NULL, "oops");
duke@0 139 return _resolve_virtual_call_blob->instructions_begin();
duke@0 140 }
duke@0 141 static address get_resolve_static_call_stub() {
duke@0 142 assert(_resolve_static_call_blob != NULL, "oops");
duke@0 143 return _resolve_static_call_blob->instructions_begin();
duke@0 144 }
duke@0 145
duke@0 146 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; }
duke@0 147 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; }
duke@0 148
duke@0 149 // Counters
duke@0 150 #ifndef PRODUCT
duke@0 151 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; }
duke@0 152 #endif // PRODUCT
duke@0 153
duke@0 154 // Helper routine for full-speed JVMTI exception throwing support
duke@0 155 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception);
duke@0 156 static void throw_and_post_jvmti_exception(JavaThread *thread, symbolOop name, const char *message = NULL);
duke@0 157
duke@0 158 // To be used as the entry point for unresolved native methods.
duke@0 159 static address native_method_throw_unsatisfied_link_error_entry();
duke@0 160
duke@0 161 // bytecode tracing is only used by the TraceBytecodes
duke@0 162 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0;
duke@0 163
duke@0 164 // Used to back off a spin lock that is under heavy contention
duke@0 165 static void yield_all(JavaThread* thread, int attempts = 0);
duke@0 166
duke@0 167 static oop retrieve_receiver( symbolHandle sig, frame caller );
duke@0 168
duke@0 169 static void verify_caller_frame(frame caller_frame, methodHandle callee_method) PRODUCT_RETURN;
duke@0 170 static methodHandle find_callee_method_inside_interpreter(frame caller_frame, methodHandle caller_method, int bci) PRODUCT_RETURN_(return methodHandle(););
duke@0 171
duke@0 172 static void register_finalizer(JavaThread* thread, oopDesc* obj);
duke@0 173
duke@0 174 // dtrace notifications
duke@0 175 static int dtrace_object_alloc(oopDesc* o);
duke@0 176 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o);
duke@0 177 static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m);
duke@0 178 static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m);
duke@0 179
duke@0 180 // Utility method for retrieving the Java thread id, returns 0 if the
duke@0 181 // thread is not a well formed Java thread.
duke@0 182 static jlong get_java_tid(Thread* thread);
duke@0 183
duke@0 184
duke@0 185 // used by native wrappers to reenable yellow if overflow happened in native code
duke@0 186 static void reguard_yellow_pages();
duke@0 187
duke@0 188 /**
duke@0 189 * Fill in the "X cannot be cast to a Y" message for ClassCastException
duke@0 190 *
duke@0 191 * @param thr the current thread
duke@0 192 * @param name the name of the class of the object attempted to be cast
duke@0 193 * @return the dynamically allocated exception message (must be freed
duke@0 194 * by the caller using a resource mark)
duke@0 195 *
duke@0 196 * BCP must refer to the current 'checkcast' opcode for the frame
duke@0 197 * on top of the stack.
duke@0 198 * The caller (or one of it's callers) must use a ResourceMark
duke@0 199 * in order to correctly free the result.
duke@0 200 */
duke@0 201 static char* generate_class_cast_message(JavaThread* thr, const char* name);
duke@0 202
duke@0 203 /**
duke@0 204 * Fill in the "X cannot be cast to a Y" message for ClassCastException
duke@0 205 *
duke@0 206 * @param name the name of the class of the object attempted to be cast
duke@0 207 * @param klass the name of the target klass attempt
duke@0 208 * @return the dynamically allocated exception message (must be freed
duke@0 209 * by the caller using a resource mark)
duke@0 210 *
duke@0 211 * This version does not require access the frame, so it can be called
duke@0 212 * from interpreted code
duke@0 213 * The caller (or one of it's callers) must use a ResourceMark
duke@0 214 * in order to correctly free the result.
duke@0 215 */
duke@0 216 static char* generate_class_cast_message(const char* name, const char* klass);
duke@0 217
duke@0 218 // Resolves a call site- may patch in the destination of the call into the
duke@0 219 // compiled code.
duke@0 220 static methodHandle resolve_helper(JavaThread *thread,
duke@0 221 bool is_virtual,
duke@0 222 bool is_optimized, TRAPS);
duke@0 223
duke@0 224 static void generate_stubs(void);
duke@0 225
duke@0 226 private:
duke@0 227 // deopt blob
duke@0 228 static void generate_deopt_blob(void);
duke@0 229 static DeoptimizationBlob* _deopt_blob;
duke@0 230
duke@0 231 public:
duke@0 232 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; }
duke@0 233
duke@0 234 // Resets a call-site in compiled code so it will get resolved again.
duke@0 235 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS);
duke@0 236
duke@0 237 // In the code prolog, if the klass comparison fails, the inline cache
duke@0 238 // misses and the call site is patched to megamorphic
duke@0 239 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS);
duke@0 240
duke@0 241 // Find the method that called us.
duke@0 242 static methodHandle find_callee_method(JavaThread* thread, TRAPS);
duke@0 243
duke@0 244
duke@0 245 private:
duke@0 246 static Handle find_callee_info(JavaThread* thread,
duke@0 247 Bytecodes::Code& bc,
duke@0 248 CallInfo& callinfo, TRAPS);
duke@0 249 static Handle find_callee_info_helper(JavaThread* thread,
duke@0 250 vframeStream& vfst,
duke@0 251 Bytecodes::Code& bc,
duke@0 252 CallInfo& callinfo, TRAPS);
duke@0 253
duke@0 254 static address clean_virtual_call_entry();
duke@0 255 static address clean_opt_virtual_call_entry();
duke@0 256 static address clean_static_call_entry();
duke@0 257
duke@0 258 public:
duke@0 259
duke@0 260
duke@0 261 static void create_native_wrapper (JavaThread* thread, methodOop method);
duke@0 262
duke@0 263 // Read the array of BasicTypes from a Java signature, and compute where
duke@0 264 // compiled Java code would like to put the results. Values in reg_lo and
duke@0 265 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are
duke@0 266 // registers, those above refer to 4-byte stack slots. All stack slots are
duke@0 267 // based off of the window top. SharedInfo::stack0 refers to the first usable
duke@0 268 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word
duke@0 269 // 4-bytes higher. So for sparc because the register window save area is at
duke@0 270 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0
duke@0 271 // will be just above it. (
duke@0 272 // return value is the maximum number of VMReg stack slots the convention will use.
duke@0 273 static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing);
duke@0 274
duke@0 275 // Ditto except for calling C
duke@0 276 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed);
duke@0 277
duke@0 278 // Generate I2C and C2I adapters. These adapters are simple argument marshalling
duke@0 279 // blobs. Unlike adapters in the tiger and earlier releases the code in these
duke@0 280 // blobs does not create a new frame and are therefore virtually invisible
duke@0 281 // to the stack walking code. In general these blobs extend the callers stack
duke@0 282 // as needed for the conversion of argument locations.
duke@0 283
duke@0 284 // When calling a c2i blob the code will always call the interpreter even if
duke@0 285 // by the time we reach the blob there is compiled code available. This allows
duke@0 286 // the blob to pass the incoming stack pointer (the sender sp) in a known
duke@0 287 // location for the interpreter to record. This is used by the frame code
duke@0 288 // to correct the sender code to match up with the stack pointer when the
duke@0 289 // thread left the compiled code. In addition it allows the interpreter
duke@0 290 // to remove the space the c2i adapter allocated to do it argument conversion.
duke@0 291
duke@0 292 // Although a c2i blob will always run interpreted even if compiled code is
duke@0 293 // present if we see that compiled code is present the compiled call site
duke@0 294 // will be patched/re-resolved so that later calls will run compiled.
duke@0 295
duke@0 296 // Aditionally a c2i blob need to have a unverified entry because it can be reached
duke@0 297 // in situations where the call site is an inlined cache site and may go megamorphic.
duke@0 298
duke@0 299 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed
duke@0 300 // that the interpreter before it does any call dispatch will record the current
duke@0 301 // stack pointer in the interpreter frame. On return it will restore the stack
duke@0 302 // pointer as needed. This means the i2c adapter code doesn't need any special
duke@0 303 // handshaking path with compiled code to keep the stack walking correct.
duke@0 304
duke@0 305 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm,
duke@0 306 int total_args_passed,
duke@0 307 int max_arg,
duke@0 308 const BasicType *sig_bt,
duke@0 309 const VMRegPair *regs);
duke@0 310
duke@0 311 // OSR support
duke@0 312
duke@0 313 // OSR_migration_begin will extract the jvm state from an interpreter
duke@0 314 // frame (locals, monitors) and store the data in a piece of C heap
duke@0 315 // storage. This then allows the interpreter frame to be removed from the
duke@0 316 // stack and the OSR nmethod to be called. That method is called with a
duke@0 317 // pointer to the C heap storage. This pointer is the return value from
duke@0 318 // OSR_migration_begin.
duke@0 319
duke@0 320 static intptr_t* OSR_migration_begin( JavaThread *thread);
duke@0 321
duke@0 322 // OSR_migration_end is a trivial routine. It is called after the compiled
duke@0 323 // method has extracted the jvm state from the C heap that OSR_migration_begin
duke@0 324 // created. It's entire job is to simply free this storage.
duke@0 325 static void OSR_migration_end ( intptr_t* buf);
duke@0 326
duke@0 327 // Convert a sig into a calling convention register layout
duke@0 328 // and find interesting things about it.
duke@0 329 static VMRegPair* find_callee_arguments(symbolOop sig, bool is_static, int *arg_size);
duke@0 330 static VMReg name_for_receiver();
duke@0 331
duke@0 332 // "Top of Stack" slots that may be unused by the calling convention but must
duke@0 333 // otherwise be preserved.
duke@0 334 // On Intel these are not necessary and the value can be zero.
duke@0 335 // On Sparc this describes the words reserved for storing a register window
duke@0 336 // when an interrupt occurs.
duke@0 337 static uint out_preserve_stack_slots();
duke@0 338
duke@0 339 // Save and restore a native result
duke@0 340 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
duke@0 341 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
duke@0 342
duke@0 343 // Generate a native wrapper for a given method. The method takes arguments
duke@0 344 // in the Java compiled code convention, marshals them to the native
duke@0 345 // convention (handlizes oops, etc), transitions to native, makes the call,
duke@0 346 // returns to java state (possibly blocking), unhandlizes any result and
duke@0 347 // returns.
duke@0 348 static nmethod *generate_native_wrapper(MacroAssembler* masm,
duke@0 349 methodHandle method,
duke@0 350 int total_args_passed,
duke@0 351 int max_arg,
duke@0 352 BasicType *sig_bt,
duke@0 353 VMRegPair *regs,
duke@0 354 BasicType ret_type );
duke@0 355
duke@0 356 // A compiled caller has just called the interpreter, but compiled code
duke@0 357 // exists. Patch the caller so he no longer calls into the interpreter.
duke@0 358 static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc);
duke@0 359
duke@0 360 // Slow-path Locking and Unlocking
duke@0 361 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
duke@0 362 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
duke@0 363
duke@0 364 // Resolving of calls
duke@0 365 static address resolve_static_call_C (JavaThread *thread);
duke@0 366 static address resolve_virtual_call_C (JavaThread *thread);
duke@0 367 static address resolve_opt_virtual_call_C(JavaThread *thread);
duke@0 368
duke@0 369 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.)
duke@0 370 static void slow_arraycopy_C(oopDesc* src, jint src_pos,
duke@0 371 oopDesc* dest, jint dest_pos,
duke@0 372 jint length, JavaThread* thread);
duke@0 373
duke@0 374 // handle ic miss with caller being compiled code
duke@0 375 // wrong method handling (inline cache misses, zombie methods)
duke@0 376 static address handle_wrong_method(JavaThread* thread);
duke@0 377 static address handle_wrong_method_ic_miss(JavaThread* thread);
duke@0 378
duke@0 379 #ifndef PRODUCT
duke@0 380
duke@0 381 // Collect and print inline cache miss statistics
duke@0 382 private:
duke@0 383 enum { maxICmiss_count = 100 };
duke@0 384 static int _ICmiss_index; // length of IC miss histogram
duke@0 385 static int _ICmiss_count[maxICmiss_count]; // miss counts
duke@0 386 static address _ICmiss_at[maxICmiss_count]; // miss addresses
duke@0 387 static void trace_ic_miss(address at);
duke@0 388
duke@0 389 public:
duke@0 390 static int _monitor_enter_ctr; // monitor enter slow
duke@0 391 static int _monitor_exit_ctr; // monitor exit slow
duke@0 392 static int _throw_null_ctr; // throwing a null-pointer exception
duke@0 393 static int _ic_miss_ctr; // total # of IC misses
duke@0 394 static int _wrong_method_ctr;
duke@0 395 static int _resolve_static_ctr;
duke@0 396 static int _resolve_virtual_ctr;
duke@0 397 static int _resolve_opt_virtual_ctr;
duke@0 398 static int _implicit_null_throws;
duke@0 399 static int _implicit_div0_throws;
duke@0 400
duke@0 401 static int _jbyte_array_copy_ctr; // Slow-path byte array copy
duke@0 402 static int _jshort_array_copy_ctr; // Slow-path short array copy
duke@0 403 static int _jint_array_copy_ctr; // Slow-path int array copy
duke@0 404 static int _jlong_array_copy_ctr; // Slow-path long array copy
duke@0 405 static int _oop_array_copy_ctr; // Slow-path oop array copy
duke@0 406 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast
duke@0 407 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks
duke@0 408 static int _generic_array_copy_ctr; // Slow-path includes type decoding
duke@0 409 static int _slow_array_copy_ctr; // Slow-path failed out to a method call
duke@0 410
duke@0 411 static int _new_instance_ctr; // 'new' object requires GC
duke@0 412 static int _new_array_ctr; // 'new' array requires GC
duke@0 413 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr;
duke@0 414 static int _find_handler_ctr; // find exception handler
duke@0 415 static int _rethrow_ctr; // rethrow exception
duke@0 416 static int _mon_enter_stub_ctr; // monitor enter stub
duke@0 417 static int _mon_exit_stub_ctr; // monitor exit stub
duke@0 418 static int _mon_enter_ctr; // monitor enter slow
duke@0 419 static int _mon_exit_ctr; // monitor exit slow
duke@0 420 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check
duke@0 421
duke@0 422 // Statistics code
duke@0 423 // stats for "normal" compiled calls (non-interface)
duke@0 424 static int _nof_normal_calls; // total # of calls
duke@0 425 static int _nof_optimized_calls; // total # of statically-bound calls
duke@0 426 static int _nof_inlined_calls; // total # of inlined normal calls
duke@0 427 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial)
duke@0 428 static int _nof_inlined_static_calls; // total # of inlined static calls
duke@0 429 // stats for compiled interface calls
duke@0 430 static int _nof_interface_calls; // total # of compiled calls
duke@0 431 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls
duke@0 432 static int _nof_inlined_interface_calls; // total # of inlined interface calls
duke@0 433 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls
duke@0 434 // stats for runtime exceptions
duke@0 435 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining
duke@0 436
duke@0 437 public: // for compiler
duke@0 438 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; }
duke@0 439 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; }
duke@0 440 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; }
duke@0 441 static address nof_static_calls_addr() { return (address)&_nof_static_calls; }
duke@0 442 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; }
duke@0 443 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; }
duke@0 444 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; }
duke@0 445 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; }
duke@0 446 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; }
duke@0 447 static void print_call_statistics(int comp_total);
duke@0 448 static void print_statistics();
duke@0 449 static void print_ic_miss_histogram();
duke@0 450
duke@0 451 #endif // PRODUCT
duke@0 452 };
duke@0 453
duke@0 454
duke@0 455 // ---------------------------------------------------------------------------
duke@0 456 // Implementation of AdapterHandlerLibrary
duke@0 457 //
duke@0 458 // This library manages argument marshaling adapters and native wrappers.
duke@0 459 // There are 2 flavors of adapters: I2C and C2I.
duke@0 460 //
duke@0 461 // The I2C flavor takes a stock interpreted call setup, marshals the arguments
duke@0 462 // for a Java-compiled call, and jumps to Rmethod-> code()->
duke@0 463 // instructions_begin(). It is broken to call it without an nmethod assigned.
duke@0 464 // The usual behavior is to lift any register arguments up out of the stack
duke@0 465 // and possibly re-pack the extra arguments to be contigious. I2C adapters
duke@0 466 // will save what the interpreter's stack pointer will be after arguments are
duke@0 467 // popped, then adjust the interpreter's frame size to force alignment and
duke@0 468 // possibly to repack the arguments. After re-packing, it jumps to the
duke@0 469 // compiled code start. There are no safepoints in this adapter code and a GC
duke@0 470 // cannot happen while marshaling is in progress.
duke@0 471 //
duke@0 472 // The C2I flavor takes a stock compiled call setup plus the target method in
duke@0 473 // Rmethod, marshals the arguments for an interpreted call and jumps to
duke@0 474 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been
duke@0 475 // setup. Compiled frames are fixed-size and the args are likely not in the
duke@0 476 // right place. Hence all the args will likely be copied into the
duke@0 477 // interpreter's frame, forcing that frame to grow. The compiled frame's
duke@0 478 // outgoing stack args will be dead after the copy.
duke@0 479 //
duke@0 480 // Native wrappers, like adapters, marshal arguments. Unlike adapters they
duke@0 481 // also perform an offical frame push & pop. They have a call to the native
duke@0 482 // routine in their middles and end in a return (instead of ending in a jump).
duke@0 483 // The native wrappers are stored in real nmethods instead of the BufferBlobs
duke@0 484 // used by the adapters. The code generation happens here because it's very
duke@0 485 // similar to what the adapters have to do.
duke@0 486
duke@0 487 class AdapterHandlerEntry : public CHeapObj {
duke@0 488 private:
duke@0 489 address _i2c_entry;
duke@0 490 address _c2i_entry;
duke@0 491 address _c2i_unverified_entry;
duke@0 492
duke@0 493 public:
duke@0 494 AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry):
duke@0 495 _i2c_entry(i2c_entry),
duke@0 496 _c2i_entry(c2i_entry),
duke@0 497 _c2i_unverified_entry(c2i_unverified_entry) {
duke@0 498 }
duke@0 499 // The name we give all buffer blobs
duke@0 500 static const char* name;
duke@0 501
duke@0 502 address get_i2c_entry() { return _i2c_entry; }
duke@0 503 address get_c2i_entry() { return _c2i_entry; }
duke@0 504 address get_c2i_unverified_entry() { return _c2i_unverified_entry; }
duke@0 505 void relocate(address new_base);
duke@0 506 #ifndef PRODUCT
duke@0 507 void print();
duke@0 508 #endif /* PRODUCT */
duke@0 509 };
duke@0 510
duke@0 511
duke@0 512 class AdapterHandlerLibrary: public AllStatic {
duke@0 513 private:
duke@0 514 enum {
duke@0 515 AbstractMethodHandler = 1 // special handler for abstract methods
duke@0 516 };
duke@0 517 static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
duke@0 518 static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers
duke@0 519 static u_char _buffer[]; // the temporary code buffer
duke@0 520 static void initialize();
duke@0 521 static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); }
duke@0 522 static int get_create_adapter_index(methodHandle method);
duke@0 523 static address get_i2c_entry( int index ) { return get_entry(index)->get_i2c_entry(); }
duke@0 524 static address get_c2i_entry( int index ) { return get_entry(index)->get_c2i_entry(); }
duke@0 525 static address get_c2i_unverified_entry( int index ) { return get_entry(index)->get_c2i_unverified_entry(); }
duke@0 526
duke@0 527 public:
duke@0 528 static nmethod* create_native_wrapper(methodHandle method);
duke@0 529 static AdapterHandlerEntry* get_adapter(methodHandle method) { return get_entry(get_create_adapter_index(method)); }
duke@0 530
duke@0 531 #ifndef PRODUCT
duke@0 532 static void print_handler(CodeBlob* b);
duke@0 533 static bool contains(CodeBlob* b);
duke@0 534 #endif /* PRODUCT */
duke@0 535
duke@0 536 };