Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.hpp @ 3763:e66f38dd58a9
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date | Wed, 08 Jun 2011 08:39:53 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |
26 #define SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP | |
27 | |
28 #include "interpreter/bytecodeHistogram.hpp" | |
29 #include "interpreter/bytecodeTracer.hpp" | |
30 #include "interpreter/linkResolver.hpp" | |
31 #include "memory/allocation.hpp" | |
32 #include "memory/resourceArea.hpp" | |
33 #include "runtime/threadLocalStorage.hpp" | |
34 #include "utilities/hashtable.hpp" | |
35 | |
0 | 36 class AdapterHandlerEntry; |
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37 class AdapterHandlerTable; |
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38 class AdapterFingerPrint; |
0 | 39 class vframeStream; |
40 | |
41 // Runtime is the base class for various runtime interfaces | |
42 // (InterpreterRuntime, CompilerRuntime, etc.). It provides | |
43 // shared functionality such as exception forwarding (C++ to | |
44 // Java exceptions), locking/unlocking mechanisms, statistical | |
45 // information, etc. | |
46 | |
47 class SharedRuntime: AllStatic { | |
48 private: | |
49 static methodHandle resolve_sub_helper(JavaThread *thread, | |
50 bool is_virtual, | |
51 bool is_optimized, TRAPS); | |
52 | |
53 // Shared stub locations | |
54 | |
55 static RuntimeStub* _wrong_method_blob; | |
56 static RuntimeStub* _ic_miss_blob; | |
57 static RuntimeStub* _resolve_opt_virtual_call_blob; | |
58 static RuntimeStub* _resolve_virtual_call_blob; | |
59 static RuntimeStub* _resolve_static_call_blob; | |
60 | |
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61 static RicochetBlob* _ricochet_blob; |
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62 |
0 | 63 static SafepointBlob* _polling_page_safepoint_handler_blob; |
64 static SafepointBlob* _polling_page_return_handler_blob; | |
65 #ifdef COMPILER2 | |
66 static ExceptionBlob* _exception_blob; | |
67 static UncommonTrapBlob* _uncommon_trap_blob; | |
68 #endif // COMPILER2 | |
69 | |
70 #ifndef PRODUCT | |
71 | |
72 // Counters | |
73 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) | |
74 | |
75 #endif // !PRODUCT | |
76 public: | |
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77 |
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78 // max bytes for each dtrace string parameter |
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79 enum { max_dtrace_string_size = 256 }; |
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80 |
0 | 81 // The following arithmetic routines are used on platforms that do |
82 // not have machine instructions to implement their functionality. | |
83 // Do not remove these. | |
84 | |
85 // long arithmetics | |
86 static jlong lmul(jlong y, jlong x); | |
87 static jlong ldiv(jlong y, jlong x); | |
88 static jlong lrem(jlong y, jlong x); | |
89 | |
90 // float and double remainder | |
91 static jfloat frem(jfloat x, jfloat y); | |
92 static jdouble drem(jdouble x, jdouble y); | |
93 | |
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94 #ifdef __SOFTFP__ |
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95 static jfloat fadd(jfloat x, jfloat y); |
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96 static jfloat fsub(jfloat x, jfloat y); |
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97 static jfloat fmul(jfloat x, jfloat y); |
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98 static jfloat fdiv(jfloat x, jfloat y); |
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99 |
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100 static jdouble dadd(jdouble x, jdouble y); |
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101 static jdouble dsub(jdouble x, jdouble y); |
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102 static jdouble dmul(jdouble x, jdouble y); |
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103 static jdouble ddiv(jdouble x, jdouble y); |
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104 #endif // __SOFTFP__ |
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105 |
0 | 106 // float conversion (needs to set appropriate rounding mode) |
107 static jint f2i (jfloat x); | |
108 static jlong f2l (jfloat x); | |
109 static jint d2i (jdouble x); | |
110 static jlong d2l (jdouble x); | |
111 static jfloat d2f (jdouble x); | |
112 static jfloat l2f (jlong x); | |
113 static jdouble l2d (jlong x); | |
114 | |
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115 #ifdef __SOFTFP__ |
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116 static jfloat i2f (jint x); |
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117 static jdouble i2d (jint x); |
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118 static jdouble f2d (jfloat x); |
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119 #endif // __SOFTFP__ |
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120 |
0 | 121 // double trigonometrics and transcendentals |
122 static jdouble dsin(jdouble x); | |
123 static jdouble dcos(jdouble x); | |
124 static jdouble dtan(jdouble x); | |
125 static jdouble dlog(jdouble x); | |
126 static jdouble dlog10(jdouble x); | |
127 static jdouble dexp(jdouble x); | |
128 static jdouble dpow(jdouble x, jdouble y); | |
129 | |
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130 #if defined(__SOFTFP__) || defined(E500V2) |
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131 static double dabs(double f); |
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132 #endif |
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133 |
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134 #if defined(__SOFTFP__) || defined(PPC) |
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135 static double dsqrt(double f); |
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136 #endif |
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137 |
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138 #ifdef __SOFTFP__ |
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139 // C++ compiler generates soft float instructions as well as passing |
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140 // float and double in registers. |
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141 static int fcmpl(float x, float y); |
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142 static int fcmpg(float x, float y); |
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143 static int dcmpl(double x, double y); |
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144 static int dcmpg(double x, double y); |
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145 |
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146 static int unordered_fcmplt(float x, float y); |
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147 static int unordered_dcmplt(double x, double y); |
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148 static int unordered_fcmple(float x, float y); |
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149 static int unordered_dcmple(double x, double y); |
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150 static int unordered_fcmpge(float x, float y); |
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151 static int unordered_dcmpge(double x, double y); |
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152 static int unordered_fcmpgt(float x, float y); |
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153 static int unordered_dcmpgt(double x, double y); |
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154 |
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155 static float fneg(float f); |
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156 static double dneg(double f); |
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157 #endif |
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158 |
0 | 159 // exception handling across interpreter/compiler boundaries |
1295 | 160 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address); |
161 static address exception_handler_for_return_address(JavaThread* thread, address return_address); | |
0 | 162 |
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163 #ifndef SERIALGC |
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164 // G1 write barriers |
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165 static void g1_wb_pre(oopDesc* orig, JavaThread *thread); |
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166 static void g1_wb_post(void* card_addr, JavaThread* thread); |
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167 #endif // !SERIALGC |
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168 |
0 | 169 // exception handling and implicit exceptions |
170 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
171 bool force_unwind, bool top_frame_only); | |
172 enum ImplicitExceptionKind { | |
173 IMPLICIT_NULL, | |
174 IMPLICIT_DIVIDE_BY_ZERO, | |
175 STACK_OVERFLOW | |
176 }; | |
177 static void throw_AbstractMethodError(JavaThread* thread); | |
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178 static void throw_IncompatibleClassChangeError(JavaThread* thread); |
0 | 179 static void throw_ArithmeticException(JavaThread* thread); |
180 static void throw_NullPointerException(JavaThread* thread); | |
181 static void throw_NullPointerException_at_call(JavaThread* thread); | |
182 static void throw_StackOverflowError(JavaThread* thread); | |
183 static address continuation_for_implicit_exception(JavaThread* thread, | |
184 address faulting_pc, | |
185 ImplicitExceptionKind exception_kind); | |
186 | |
187 // Shared stub locations | |
188 static address get_poll_stub(address pc); | |
189 | |
190 static address get_ic_miss_stub() { | |
191 assert(_ic_miss_blob!= NULL, "oops"); | |
1748 | 192 return _ic_miss_blob->entry_point(); |
0 | 193 } |
194 | |
195 static address get_handle_wrong_method_stub() { | |
196 assert(_wrong_method_blob!= NULL, "oops"); | |
1748 | 197 return _wrong_method_blob->entry_point(); |
0 | 198 } |
199 | |
200 #ifdef COMPILER2 | |
201 static void generate_uncommon_trap_blob(void); | |
202 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } | |
203 #endif // COMPILER2 | |
204 | |
205 static address get_resolve_opt_virtual_call_stub(){ | |
206 assert(_resolve_opt_virtual_call_blob != NULL, "oops"); | |
1748 | 207 return _resolve_opt_virtual_call_blob->entry_point(); |
0 | 208 } |
209 static address get_resolve_virtual_call_stub() { | |
210 assert(_resolve_virtual_call_blob != NULL, "oops"); | |
1748 | 211 return _resolve_virtual_call_blob->entry_point(); |
0 | 212 } |
213 static address get_resolve_static_call_stub() { | |
214 assert(_resolve_static_call_blob != NULL, "oops"); | |
1748 | 215 return _resolve_static_call_blob->entry_point(); |
0 | 216 } |
217 | |
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218 static RicochetBlob* ricochet_blob() { |
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219 #ifdef X86 |
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220 // Currently only implemented on x86 |
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221 assert(!EnableInvokeDynamic || _ricochet_blob != NULL, "oops"); |
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222 #endif |
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223 return _ricochet_blob; |
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224 } |
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225 |
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226 static void generate_ricochet_blob(); |
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227 |
0 | 228 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } |
229 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } | |
230 | |
231 // Counters | |
232 #ifndef PRODUCT | |
233 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } | |
234 #endif // PRODUCT | |
235 | |
236 // Helper routine for full-speed JVMTI exception throwing support | |
237 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); | |
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238 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL); |
0 | 239 |
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240 // RedefineClasses() tracing support for obsolete method entry |
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241 static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m); |
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242 |
0 | 243 // To be used as the entry point for unresolved native methods. |
244 static address native_method_throw_unsatisfied_link_error_entry(); | |
245 | |
246 // bytecode tracing is only used by the TraceBytecodes | |
247 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; | |
248 | |
249 // Used to back off a spin lock that is under heavy contention | |
250 static void yield_all(JavaThread* thread, int attempts = 0); | |
251 | |
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252 static oop retrieve_receiver( Symbol* sig, frame caller ); |
0 | 253 |
254 static void register_finalizer(JavaThread* thread, oopDesc* obj); | |
255 | |
256 // dtrace notifications | |
257 static int dtrace_object_alloc(oopDesc* o); | |
258 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); | |
259 static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m); | |
260 static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m); | |
261 | |
262 // Utility method for retrieving the Java thread id, returns 0 if the | |
263 // thread is not a well formed Java thread. | |
264 static jlong get_java_tid(Thread* thread); | |
265 | |
266 | |
267 // used by native wrappers to reenable yellow if overflow happened in native code | |
268 static void reguard_yellow_pages(); | |
269 | |
270 /** | |
271 * Fill in the "X cannot be cast to a Y" message for ClassCastException | |
272 * | |
273 * @param thr the current thread | |
274 * @param name the name of the class of the object attempted to be cast | |
275 * @return the dynamically allocated exception message (must be freed | |
276 * by the caller using a resource mark) | |
277 * | |
278 * BCP must refer to the current 'checkcast' opcode for the frame | |
279 * on top of the stack. | |
280 * The caller (or one of it's callers) must use a ResourceMark | |
281 * in order to correctly free the result. | |
282 */ | |
283 static char* generate_class_cast_message(JavaThread* thr, const char* name); | |
284 | |
285 /** | |
710 | 286 * Fill in the message for a WrongMethodTypeException |
287 * | |
288 * @param thr the current thread | |
289 * @param mtype (optional) expected method type (or argument class) | |
290 * @param mhandle (optional) actual method handle (or argument) | |
291 * @return the dynamically allocated exception message | |
292 * | |
293 * BCP for the frame on top of the stack must refer to an | |
294 * 'invokevirtual' op for a method handle, or an 'invokedyamic' op. | |
295 * The caller (or one of its callers) must use a ResourceMark | |
296 * in order to correctly free the result. | |
297 */ | |
298 static char* generate_wrong_method_type_message(JavaThread* thr, | |
299 oopDesc* mtype = NULL, | |
300 oopDesc* mhandle = NULL); | |
301 | |
302 /** Return non-null if the mtype is a klass or Class, not a MethodType. */ | |
303 static oop wrong_method_type_is_for_single_argument(JavaThread* thr, | |
304 oopDesc* mtype); | |
305 | |
306 /** | |
0 | 307 * Fill in the "X cannot be cast to a Y" message for ClassCastException |
308 * | |
309 * @param name the name of the class of the object attempted to be cast | |
310 * @param klass the name of the target klass attempt | |
710 | 311 * @param gripe the specific kind of problem being reported |
0 | 312 * @return the dynamically allocated exception message (must be freed |
313 * by the caller using a resource mark) | |
314 * | |
315 * This version does not require access the frame, so it can be called | |
316 * from interpreted code | |
317 * The caller (or one of it's callers) must use a ResourceMark | |
318 * in order to correctly free the result. | |
319 */ | |
710 | 320 static char* generate_class_cast_message(const char* name, const char* klass, |
321 const char* gripe = " cannot be cast to "); | |
0 | 322 |
323 // Resolves a call site- may patch in the destination of the call into the | |
324 // compiled code. | |
325 static methodHandle resolve_helper(JavaThread *thread, | |
326 bool is_virtual, | |
327 bool is_optimized, TRAPS); | |
328 | |
329 static void generate_stubs(void); | |
330 | |
331 private: | |
332 // deopt blob | |
333 static void generate_deopt_blob(void); | |
334 static DeoptimizationBlob* _deopt_blob; | |
335 | |
336 public: | |
337 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } | |
338 | |
339 // Resets a call-site in compiled code so it will get resolved again. | |
340 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); | |
341 | |
342 // In the code prolog, if the klass comparison fails, the inline cache | |
343 // misses and the call site is patched to megamorphic | |
344 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); | |
345 | |
346 // Find the method that called us. | |
347 static methodHandle find_callee_method(JavaThread* thread, TRAPS); | |
348 | |
349 | |
350 private: | |
351 static Handle find_callee_info(JavaThread* thread, | |
352 Bytecodes::Code& bc, | |
353 CallInfo& callinfo, TRAPS); | |
354 static Handle find_callee_info_helper(JavaThread* thread, | |
355 vframeStream& vfst, | |
356 Bytecodes::Code& bc, | |
357 CallInfo& callinfo, TRAPS); | |
358 | |
359 static address clean_virtual_call_entry(); | |
360 static address clean_opt_virtual_call_entry(); | |
361 static address clean_static_call_entry(); | |
362 | |
363 public: | |
364 | |
365 // Read the array of BasicTypes from a Java signature, and compute where | |
366 // compiled Java code would like to put the results. Values in reg_lo and | |
367 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are | |
368 // registers, those above refer to 4-byte stack slots. All stack slots are | |
369 // based off of the window top. SharedInfo::stack0 refers to the first usable | |
370 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word | |
371 // 4-bytes higher. So for sparc because the register window save area is at | |
372 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 | |
373 // will be just above it. ( | |
374 // return value is the maximum number of VMReg stack slots the convention will use. | |
375 static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing); | |
376 | |
377 // Ditto except for calling C | |
378 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); | |
379 | |
380 // Generate I2C and C2I adapters. These adapters are simple argument marshalling | |
381 // blobs. Unlike adapters in the tiger and earlier releases the code in these | |
382 // blobs does not create a new frame and are therefore virtually invisible | |
383 // to the stack walking code. In general these blobs extend the callers stack | |
384 // as needed for the conversion of argument locations. | |
385 | |
386 // When calling a c2i blob the code will always call the interpreter even if | |
387 // by the time we reach the blob there is compiled code available. This allows | |
388 // the blob to pass the incoming stack pointer (the sender sp) in a known | |
389 // location for the interpreter to record. This is used by the frame code | |
390 // to correct the sender code to match up with the stack pointer when the | |
391 // thread left the compiled code. In addition it allows the interpreter | |
392 // to remove the space the c2i adapter allocated to do it argument conversion. | |
393 | |
394 // Although a c2i blob will always run interpreted even if compiled code is | |
395 // present if we see that compiled code is present the compiled call site | |
396 // will be patched/re-resolved so that later calls will run compiled. | |
397 | |
398 // Aditionally a c2i blob need to have a unverified entry because it can be reached | |
399 // in situations where the call site is an inlined cache site and may go megamorphic. | |
400 | |
401 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed | |
402 // that the interpreter before it does any call dispatch will record the current | |
403 // stack pointer in the interpreter frame. On return it will restore the stack | |
404 // pointer as needed. This means the i2c adapter code doesn't need any special | |
405 // handshaking path with compiled code to keep the stack walking correct. | |
406 | |
407 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, | |
408 int total_args_passed, | |
409 int max_arg, | |
410 const BasicType *sig_bt, | |
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411 const VMRegPair *regs, |
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412 AdapterFingerPrint* fingerprint); |
0 | 413 |
414 // OSR support | |
415 | |
416 // OSR_migration_begin will extract the jvm state from an interpreter | |
417 // frame (locals, monitors) and store the data in a piece of C heap | |
418 // storage. This then allows the interpreter frame to be removed from the | |
419 // stack and the OSR nmethod to be called. That method is called with a | |
420 // pointer to the C heap storage. This pointer is the return value from | |
421 // OSR_migration_begin. | |
422 | |
423 static intptr_t* OSR_migration_begin( JavaThread *thread); | |
424 | |
425 // OSR_migration_end is a trivial routine. It is called after the compiled | |
426 // method has extracted the jvm state from the C heap that OSR_migration_begin | |
427 // created. It's entire job is to simply free this storage. | |
428 static void OSR_migration_end ( intptr_t* buf); | |
429 | |
430 // Convert a sig into a calling convention register layout | |
431 // and find interesting things about it. | |
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432 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, int *arg_size); |
0 | 433 static VMReg name_for_receiver(); |
434 | |
435 // "Top of Stack" slots that may be unused by the calling convention but must | |
436 // otherwise be preserved. | |
437 // On Intel these are not necessary and the value can be zero. | |
438 // On Sparc this describes the words reserved for storing a register window | |
439 // when an interrupt occurs. | |
440 static uint out_preserve_stack_slots(); | |
441 | |
442 // Save and restore a native result | |
443 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
444 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
445 | |
446 // Generate a native wrapper for a given method. The method takes arguments | |
447 // in the Java compiled code convention, marshals them to the native | |
448 // convention (handlizes oops, etc), transitions to native, makes the call, | |
449 // returns to java state (possibly blocking), unhandlizes any result and | |
450 // returns. | |
451 static nmethod *generate_native_wrapper(MacroAssembler* masm, | |
452 methodHandle method, | |
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453 int compile_id, |
0 | 454 int total_args_passed, |
455 int max_arg, | |
456 BasicType *sig_bt, | |
457 VMRegPair *regs, | |
458 BasicType ret_type ); | |
459 | |
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460 #ifdef HAVE_DTRACE_H |
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461 // Generate a dtrace wrapper for a given method. The method takes arguments |
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462 // in the Java compiled code convention, marshals them to the native |
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463 // convention (handlizes oops, etc), transitions to native, makes the call, |
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464 // returns to java state (possibly blocking), unhandlizes any result and |
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465 // returns. |
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466 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, |
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467 methodHandle method); |
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468 |
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469 // dtrace support to convert a Java string to utf8 |
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470 static void get_utf(oopDesc* src, address dst); |
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471 #endif // def HAVE_DTRACE_H |
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472 |
0 | 473 // A compiled caller has just called the interpreter, but compiled code |
474 // exists. Patch the caller so he no longer calls into the interpreter. | |
475 static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); | |
476 | |
477 // Slow-path Locking and Unlocking | |
478 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); | |
479 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); | |
480 | |
481 // Resolving of calls | |
482 static address resolve_static_call_C (JavaThread *thread); | |
483 static address resolve_virtual_call_C (JavaThread *thread); | |
484 static address resolve_opt_virtual_call_C(JavaThread *thread); | |
485 | |
486 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) | |
487 static void slow_arraycopy_C(oopDesc* src, jint src_pos, | |
488 oopDesc* dest, jint dest_pos, | |
489 jint length, JavaThread* thread); | |
490 | |
491 // handle ic miss with caller being compiled code | |
492 // wrong method handling (inline cache misses, zombie methods) | |
493 static address handle_wrong_method(JavaThread* thread); | |
494 static address handle_wrong_method_ic_miss(JavaThread* thread); | |
495 | |
496 #ifndef PRODUCT | |
497 | |
498 // Collect and print inline cache miss statistics | |
499 private: | |
500 enum { maxICmiss_count = 100 }; | |
501 static int _ICmiss_index; // length of IC miss histogram | |
502 static int _ICmiss_count[maxICmiss_count]; // miss counts | |
503 static address _ICmiss_at[maxICmiss_count]; // miss addresses | |
504 static void trace_ic_miss(address at); | |
505 | |
506 public: | |
507 static int _monitor_enter_ctr; // monitor enter slow | |
508 static int _monitor_exit_ctr; // monitor exit slow | |
509 static int _throw_null_ctr; // throwing a null-pointer exception | |
510 static int _ic_miss_ctr; // total # of IC misses | |
511 static int _wrong_method_ctr; | |
512 static int _resolve_static_ctr; | |
513 static int _resolve_virtual_ctr; | |
514 static int _resolve_opt_virtual_ctr; | |
515 static int _implicit_null_throws; | |
516 static int _implicit_div0_throws; | |
517 | |
518 static int _jbyte_array_copy_ctr; // Slow-path byte array copy | |
519 static int _jshort_array_copy_ctr; // Slow-path short array copy | |
520 static int _jint_array_copy_ctr; // Slow-path int array copy | |
521 static int _jlong_array_copy_ctr; // Slow-path long array copy | |
522 static int _oop_array_copy_ctr; // Slow-path oop array copy | |
523 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast | |
524 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks | |
525 static int _generic_array_copy_ctr; // Slow-path includes type decoding | |
526 static int _slow_array_copy_ctr; // Slow-path failed out to a method call | |
527 | |
528 static int _new_instance_ctr; // 'new' object requires GC | |
529 static int _new_array_ctr; // 'new' array requires GC | |
530 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; | |
531 static int _find_handler_ctr; // find exception handler | |
532 static int _rethrow_ctr; // rethrow exception | |
533 static int _mon_enter_stub_ctr; // monitor enter stub | |
534 static int _mon_exit_stub_ctr; // monitor exit stub | |
535 static int _mon_enter_ctr; // monitor enter slow | |
536 static int _mon_exit_ctr; // monitor exit slow | |
537 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check | |
538 | |
539 // Statistics code | |
540 // stats for "normal" compiled calls (non-interface) | |
541 static int _nof_normal_calls; // total # of calls | |
542 static int _nof_optimized_calls; // total # of statically-bound calls | |
543 static int _nof_inlined_calls; // total # of inlined normal calls | |
544 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) | |
545 static int _nof_inlined_static_calls; // total # of inlined static calls | |
546 // stats for compiled interface calls | |
547 static int _nof_interface_calls; // total # of compiled calls | |
548 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls | |
549 static int _nof_inlined_interface_calls; // total # of inlined interface calls | |
550 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls | |
551 // stats for runtime exceptions | |
552 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining | |
553 | |
554 public: // for compiler | |
555 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } | |
556 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } | |
557 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } | |
558 static address nof_static_calls_addr() { return (address)&_nof_static_calls; } | |
559 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } | |
560 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } | |
561 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } | |
562 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } | |
563 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } | |
564 static void print_call_statistics(int comp_total); | |
565 static void print_statistics(); | |
566 static void print_ic_miss_histogram(); | |
567 | |
568 #endif // PRODUCT | |
569 }; | |
570 | |
571 | |
572 // --------------------------------------------------------------------------- | |
573 // Implementation of AdapterHandlerLibrary | |
574 // | |
575 // This library manages argument marshaling adapters and native wrappers. | |
576 // There are 2 flavors of adapters: I2C and C2I. | |
577 // | |
1748 | 578 // The I2C flavor takes a stock interpreted call setup, marshals the |
579 // arguments for a Java-compiled call, and jumps to Rmethod-> code()-> | |
580 // code_begin(). It is broken to call it without an nmethod assigned. | |
581 // The usual behavior is to lift any register arguments up out of the | |
582 // stack and possibly re-pack the extra arguments to be contigious. | |
583 // I2C adapters will save what the interpreter's stack pointer will be | |
584 // after arguments are popped, then adjust the interpreter's frame | |
585 // size to force alignment and possibly to repack the arguments. | |
586 // After re-packing, it jumps to the compiled code start. There are | |
587 // no safepoints in this adapter code and a GC cannot happen while | |
588 // marshaling is in progress. | |
0 | 589 // |
590 // The C2I flavor takes a stock compiled call setup plus the target method in | |
591 // Rmethod, marshals the arguments for an interpreted call and jumps to | |
592 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been | |
593 // setup. Compiled frames are fixed-size and the args are likely not in the | |
594 // right place. Hence all the args will likely be copied into the | |
595 // interpreter's frame, forcing that frame to grow. The compiled frame's | |
596 // outgoing stack args will be dead after the copy. | |
597 // | |
598 // Native wrappers, like adapters, marshal arguments. Unlike adapters they | |
599 // also perform an offical frame push & pop. They have a call to the native | |
600 // routine in their middles and end in a return (instead of ending in a jump). | |
601 // The native wrappers are stored in real nmethods instead of the BufferBlobs | |
602 // used by the adapters. The code generation happens here because it's very | |
603 // similar to what the adapters have to do. | |
604 | |
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605 class AdapterHandlerEntry : public BasicHashtableEntry { |
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606 friend class AdapterHandlerTable; |
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607 |
0 | 608 private: |
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609 AdapterFingerPrint* _fingerprint; |
0 | 610 address _i2c_entry; |
611 address _c2i_entry; | |
612 address _c2i_unverified_entry; | |
613 | |
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614 #ifdef ASSERT |
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615 // Captures code and signature used to generate this adapter when |
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616 // verifing adapter equivalence. |
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617 unsigned char* _saved_code; |
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618 int _code_length; |
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619 BasicType* _saved_sig; |
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620 int _total_args_passed; |
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621 #endif |
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622 |
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623 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
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624 _fingerprint = fingerprint; |
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625 _i2c_entry = i2c_entry; |
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626 _c2i_entry = c2i_entry; |
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627 _c2i_unverified_entry = c2i_unverified_entry; |
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628 #ifdef ASSERT |
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629 _saved_code = NULL; |
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630 _code_length = 0; |
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631 _saved_sig = NULL; |
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632 _total_args_passed = 0; |
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633 #endif |
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634 } |
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635 |
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636 void deallocate(); |
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637 |
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638 // should never be used |
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639 AdapterHandlerEntry(); |
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640 |
0 | 641 public: |
642 address get_i2c_entry() { return _i2c_entry; } | |
643 address get_c2i_entry() { return _c2i_entry; } | |
644 address get_c2i_unverified_entry() { return _c2i_unverified_entry; } | |
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645 |
0 | 646 void relocate(address new_base); |
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647 |
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648 AdapterFingerPrint* fingerprint() { return _fingerprint; } |
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649 |
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650 AdapterHandlerEntry* next() { |
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651 return (AdapterHandlerEntry*)BasicHashtableEntry::next(); |
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652 } |
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653 |
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654 #ifdef ASSERT |
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655 // Used to verify that code generated for shared adapters is equivalent |
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656 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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657 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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658 #endif |
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659 |
0 | 660 void print(); |
661 }; | |
662 | |
663 class AdapterHandlerLibrary: public AllStatic { | |
664 private: | |
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665 static BufferBlob* _buffer; // the temporary code buffer in CodeCache |
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666 static AdapterHandlerTable* _adapters; |
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667 static AdapterHandlerEntry* _abstract_method_handler; |
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668 static BufferBlob* buffer_blob(); |
0 | 669 static void initialize(); |
670 | |
671 public: | |
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672 |
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673 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, |
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674 address i2c_entry, address c2i_entry, address c2i_unverified_entry); |
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675 static nmethod* create_native_wrapper(methodHandle method, int compile_id); |
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676 static AdapterHandlerEntry* get_adapter(methodHandle method); |
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677 |
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678 #ifdef HAVE_DTRACE_H |
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679 static nmethod* create_dtrace_nmethod (methodHandle method); |
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680 #endif // HAVE_DTRACE_H |
0 | 681 |
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682 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); } |
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683 static void print_handler_on(outputStream* st, CodeBlob* b); |
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684 static bool contains(CodeBlob* b); |
0 | 685 #ifndef PRODUCT |
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686 static void print_statistics(); |
0 | 687 #endif /* PRODUCT */ |
688 | |
689 }; | |
1972 | 690 |
691 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |