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