Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.hpp @ 3563:8780fa370aab
Support runtime calls to targets that don't fit in a 32-bit immediate: allow to query the maximum offset of a CiRuntimeCall target to determine the required immediate size and patch call sites with a mov/call instruction pair for indirect calls
author | Peter Hofer <peter.hofer@jku.at> |
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date | Wed, 31 Aug 2011 14:55:40 +0200 |
parents | be4ca325525a |
children | 04b9a2566eec |
rev | line source |
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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 | |
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55 static RuntimeStub* _wrong_method_blob; |
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56 static RuntimeStub* _ic_miss_blob; |
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57 static RuntimeStub* _resolve_opt_virtual_call_blob; |
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58 static RuntimeStub* _resolve_virtual_call_blob; |
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59 static RuntimeStub* _resolve_static_call_blob; |
0 | 60 |
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61 static DeoptimizationBlob* _deopt_blob; |
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62 static RicochetBlob* _ricochet_blob; |
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63 |
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64 static SafepointBlob* _polling_page_safepoint_handler_blob; |
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65 static SafepointBlob* _polling_page_return_handler_blob; |
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66 |
0 | 67 #ifdef COMPILER2 |
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68 static UncommonTrapBlob* _uncommon_trap_blob; |
0 | 69 #endif // COMPILER2 |
70 | |
71 #ifndef PRODUCT | |
72 // Counters | |
73 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) | |
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74 #endif // !PRODUCT |
0 | 75 |
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76 private: |
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77 static SafepointBlob* generate_handler_blob(address call_ptr, bool cause_return); |
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78 static RuntimeStub* generate_resolve_blob(address destination, const char* name); |
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79 |
0 | 80 public: |
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81 static void generate_stubs(void); |
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82 |
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83 // max bytes for each dtrace string parameter |
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84 enum { max_dtrace_string_size = 256 }; |
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85 |
0 | 86 // The following arithmetic routines are used on platforms that do |
87 // not have machine instructions to implement their functionality. | |
88 // Do not remove these. | |
89 | |
90 // long arithmetics | |
91 static jlong lmul(jlong y, jlong x); | |
92 static jlong ldiv(jlong y, jlong x); | |
93 static jlong lrem(jlong y, jlong x); | |
94 | |
95 // float and double remainder | |
96 static jfloat frem(jfloat x, jfloat y); | |
97 static jdouble drem(jdouble x, jdouble y); | |
98 | |
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99 #ifdef __SOFTFP__ |
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100 static jfloat fadd(jfloat x, jfloat y); |
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101 static jfloat fsub(jfloat x, jfloat y); |
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102 static jfloat fmul(jfloat x, jfloat y); |
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103 static jfloat fdiv(jfloat x, jfloat y); |
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104 |
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105 static jdouble dadd(jdouble x, jdouble y); |
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106 static jdouble dsub(jdouble x, jdouble y); |
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107 static jdouble dmul(jdouble x, jdouble y); |
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108 static jdouble ddiv(jdouble x, jdouble y); |
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109 #endif // __SOFTFP__ |
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110 |
0 | 111 // float conversion (needs to set appropriate rounding mode) |
112 static jint f2i (jfloat x); | |
113 static jlong f2l (jfloat x); | |
114 static jint d2i (jdouble x); | |
115 static jlong d2l (jdouble x); | |
116 static jfloat d2f (jdouble x); | |
117 static jfloat l2f (jlong x); | |
118 static jdouble l2d (jlong x); | |
119 | |
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120 #ifdef __SOFTFP__ |
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121 static jfloat i2f (jint x); |
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122 static jdouble i2d (jint x); |
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123 static jdouble f2d (jfloat x); |
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124 #endif // __SOFTFP__ |
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125 |
0 | 126 // double trigonometrics and transcendentals |
127 static jdouble dsin(jdouble x); | |
128 static jdouble dcos(jdouble x); | |
129 static jdouble dtan(jdouble x); | |
130 static jdouble dlog(jdouble x); | |
131 static jdouble dlog10(jdouble x); | |
132 static jdouble dexp(jdouble x); | |
133 static jdouble dpow(jdouble x, jdouble y); | |
134 | |
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135 #if defined(__SOFTFP__) || defined(E500V2) |
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136 static double dabs(double f); |
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137 #endif |
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138 |
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139 #if defined(__SOFTFP__) || defined(PPC) |
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140 static double dsqrt(double f); |
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141 #endif |
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142 |
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143 #ifdef __SOFTFP__ |
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144 // C++ compiler generates soft float instructions as well as passing |
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145 // float and double in registers. |
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146 static int fcmpl(float x, float y); |
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147 static int fcmpg(float x, float y); |
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148 static int dcmpl(double x, double y); |
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149 static int dcmpg(double x, double y); |
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150 |
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151 static int unordered_fcmplt(float x, float y); |
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152 static int unordered_dcmplt(double x, double y); |
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153 static int unordered_fcmple(float x, float y); |
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154 static int unordered_dcmple(double x, double y); |
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155 static int unordered_fcmpge(float x, float y); |
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156 static int unordered_dcmpge(double x, double y); |
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157 static int unordered_fcmpgt(float x, float y); |
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158 static int unordered_dcmpgt(double x, double y); |
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159 |
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160 static float fneg(float f); |
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161 static double dneg(double f); |
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162 #endif |
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163 |
0 | 164 // exception handling across interpreter/compiler boundaries |
1295 | 165 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address); |
166 static address exception_handler_for_return_address(JavaThread* thread, address return_address); | |
0 | 167 |
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168 #ifndef SERIALGC |
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169 // G1 write barriers |
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170 static void g1_wb_pre(oopDesc* orig, JavaThread *thread); |
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171 static void g1_wb_post(void* card_addr, JavaThread* thread); |
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172 #endif // !SERIALGC |
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173 |
0 | 174 // exception handling and implicit exceptions |
175 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
176 bool force_unwind, bool top_frame_only); | |
177 enum ImplicitExceptionKind { | |
178 IMPLICIT_NULL, | |
179 IMPLICIT_DIVIDE_BY_ZERO, | |
180 STACK_OVERFLOW | |
181 }; | |
182 static void throw_AbstractMethodError(JavaThread* thread); | |
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183 static void throw_IncompatibleClassChangeError(JavaThread* thread); |
0 | 184 static void throw_ArithmeticException(JavaThread* thread); |
185 static void throw_NullPointerException(JavaThread* thread); | |
186 static void throw_NullPointerException_at_call(JavaThread* thread); | |
187 static void throw_StackOverflowError(JavaThread* thread); | |
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188 static address deoptimization_continuation(JavaThread* thread, address pc, nmethod* nm); |
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189 static void throw_WrongMethodTypeException(JavaThread* thread, oopDesc* required, oopDesc* actual); |
0 | 190 static address continuation_for_implicit_exception(JavaThread* thread, |
191 address faulting_pc, | |
192 ImplicitExceptionKind exception_kind); | |
193 | |
194 // Shared stub locations | |
195 static address get_poll_stub(address pc); | |
196 | |
197 static address get_ic_miss_stub() { | |
198 assert(_ic_miss_blob!= NULL, "oops"); | |
1748 | 199 return _ic_miss_blob->entry_point(); |
0 | 200 } |
201 | |
202 static address get_handle_wrong_method_stub() { | |
203 assert(_wrong_method_blob!= NULL, "oops"); | |
1748 | 204 return _wrong_method_blob->entry_point(); |
0 | 205 } |
206 | |
207 #ifdef COMPILER2 | |
208 static void generate_uncommon_trap_blob(void); | |
209 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } | |
210 #endif // COMPILER2 | |
211 | |
212 static address get_resolve_opt_virtual_call_stub(){ | |
213 assert(_resolve_opt_virtual_call_blob != NULL, "oops"); | |
1748 | 214 return _resolve_opt_virtual_call_blob->entry_point(); |
0 | 215 } |
216 static address get_resolve_virtual_call_stub() { | |
217 assert(_resolve_virtual_call_blob != NULL, "oops"); | |
1748 | 218 return _resolve_virtual_call_blob->entry_point(); |
0 | 219 } |
220 static address get_resolve_static_call_stub() { | |
221 assert(_resolve_static_call_blob != NULL, "oops"); | |
1748 | 222 return _resolve_static_call_blob->entry_point(); |
0 | 223 } |
224 | |
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225 static RicochetBlob* ricochet_blob() { |
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226 #ifdef X86 |
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227 // Currently only implemented on x86 |
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228 assert(!EnableInvokeDynamic || _ricochet_blob != NULL, "oops"); |
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229 #endif |
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230 return _ricochet_blob; |
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231 } |
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232 |
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233 static void generate_ricochet_blob(); |
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234 |
0 | 235 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } |
236 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } | |
237 | |
238 // Counters | |
239 #ifndef PRODUCT | |
240 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } | |
241 #endif // PRODUCT | |
242 | |
243 // Helper routine for full-speed JVMTI exception throwing support | |
244 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); | |
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245 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL); |
0 | 246 |
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247 // RedefineClasses() tracing support for obsolete method entry |
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248 static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m); |
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249 |
0 | 250 // To be used as the entry point for unresolved native methods. |
251 static address native_method_throw_unsatisfied_link_error_entry(); | |
252 | |
253 // bytecode tracing is only used by the TraceBytecodes | |
254 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; | |
255 | |
256 // Used to back off a spin lock that is under heavy contention | |
257 static void yield_all(JavaThread* thread, int attempts = 0); | |
258 | |
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259 static oop retrieve_receiver( Symbol* sig, frame caller ); |
0 | 260 |
261 static void register_finalizer(JavaThread* thread, oopDesc* obj); | |
262 | |
263 // dtrace notifications | |
264 static int dtrace_object_alloc(oopDesc* o); | |
265 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); | |
266 static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m); | |
267 static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m); | |
268 | |
269 // Utility method for retrieving the Java thread id, returns 0 if the | |
270 // thread is not a well formed Java thread. | |
271 static jlong get_java_tid(Thread* thread); | |
272 | |
273 | |
274 // used by native wrappers to reenable yellow if overflow happened in native code | |
275 static void reguard_yellow_pages(); | |
276 | |
277 /** | |
278 * Fill in the "X cannot be cast to a Y" message for ClassCastException | |
279 * | |
280 * @param thr the current thread | |
281 * @param name the name of the class of the object attempted to be cast | |
282 * @return the dynamically allocated exception message (must be freed | |
283 * by the caller using a resource mark) | |
284 * | |
285 * BCP must refer to the current 'checkcast' opcode for the frame | |
286 * on top of the stack. | |
287 * The caller (or one of it's callers) must use a ResourceMark | |
288 * in order to correctly free the result. | |
289 */ | |
290 static char* generate_class_cast_message(JavaThread* thr, const char* name); | |
291 | |
292 /** | |
710 | 293 * Fill in the message for a WrongMethodTypeException |
294 * | |
295 * @param thr the current thread | |
296 * @param mtype (optional) expected method type (or argument class) | |
297 * @param mhandle (optional) actual method handle (or argument) | |
298 * @return the dynamically allocated exception message | |
299 * | |
300 * BCP for the frame on top of the stack must refer to an | |
301 * 'invokevirtual' op for a method handle, or an 'invokedyamic' op. | |
302 * The caller (or one of its callers) must use a ResourceMark | |
303 * in order to correctly free the result. | |
304 */ | |
305 static char* generate_wrong_method_type_message(JavaThread* thr, | |
306 oopDesc* mtype = NULL, | |
307 oopDesc* mhandle = NULL); | |
308 | |
309 /** Return non-null if the mtype is a klass or Class, not a MethodType. */ | |
310 static oop wrong_method_type_is_for_single_argument(JavaThread* thr, | |
311 oopDesc* mtype); | |
312 | |
313 /** | |
0 | 314 * Fill in the "X cannot be cast to a Y" message for ClassCastException |
315 * | |
316 * @param name the name of the class of the object attempted to be cast | |
317 * @param klass the name of the target klass attempt | |
710 | 318 * @param gripe the specific kind of problem being reported |
0 | 319 * @return the dynamically allocated exception message (must be freed |
320 * by the caller using a resource mark) | |
321 * | |
322 * This version does not require access the frame, so it can be called | |
323 * from interpreted code | |
324 * The caller (or one of it's callers) must use a ResourceMark | |
325 * in order to correctly free the result. | |
326 */ | |
710 | 327 static char* generate_class_cast_message(const char* name, const char* klass, |
328 const char* gripe = " cannot be cast to "); | |
0 | 329 |
330 // Resolves a call site- may patch in the destination of the call into the | |
331 // compiled code. | |
332 static methodHandle resolve_helper(JavaThread *thread, | |
333 bool is_virtual, | |
334 bool is_optimized, TRAPS); | |
335 | |
336 private: | |
337 // deopt blob | |
338 static void generate_deopt_blob(void); | |
339 | |
340 public: | |
341 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } | |
342 | |
343 // Resets a call-site in compiled code so it will get resolved again. | |
344 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); | |
345 | |
346 // In the code prolog, if the klass comparison fails, the inline cache | |
347 // misses and the call site is patched to megamorphic | |
348 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); | |
349 | |
350 // Find the method that called us. | |
351 static methodHandle find_callee_method(JavaThread* thread, TRAPS); | |
352 | |
353 | |
354 private: | |
355 static Handle find_callee_info(JavaThread* thread, | |
356 Bytecodes::Code& bc, | |
357 CallInfo& callinfo, TRAPS); | |
358 static Handle find_callee_info_helper(JavaThread* thread, | |
359 vframeStream& vfst, | |
360 Bytecodes::Code& bc, | |
361 CallInfo& callinfo, TRAPS); | |
362 | |
363 static address clean_virtual_call_entry(); | |
364 static address clean_opt_virtual_call_entry(); | |
365 static address clean_static_call_entry(); | |
366 | |
367 public: | |
368 | |
369 // Read the array of BasicTypes from a Java signature, and compute where | |
370 // compiled Java code would like to put the results. Values in reg_lo and | |
371 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are | |
372 // registers, those above refer to 4-byte stack slots. All stack slots are | |
373 // based off of the window top. SharedInfo::stack0 refers to the first usable | |
374 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word | |
375 // 4-bytes higher. So for sparc because the register window save area is at | |
376 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 | |
377 // will be just above it. ( | |
378 // return value is the maximum number of VMReg stack slots the convention will use. | |
379 static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing); | |
380 | |
381 // Ditto except for calling C | |
382 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); | |
383 | |
384 // Generate I2C and C2I adapters. These adapters are simple argument marshalling | |
385 // blobs. Unlike adapters in the tiger and earlier releases the code in these | |
386 // blobs does not create a new frame and are therefore virtually invisible | |
387 // to the stack walking code. In general these blobs extend the callers stack | |
388 // as needed for the conversion of argument locations. | |
389 | |
390 // When calling a c2i blob the code will always call the interpreter even if | |
391 // by the time we reach the blob there is compiled code available. This allows | |
392 // the blob to pass the incoming stack pointer (the sender sp) in a known | |
393 // location for the interpreter to record. This is used by the frame code | |
394 // to correct the sender code to match up with the stack pointer when the | |
395 // thread left the compiled code. In addition it allows the interpreter | |
396 // to remove the space the c2i adapter allocated to do it argument conversion. | |
397 | |
398 // Although a c2i blob will always run interpreted even if compiled code is | |
399 // present if we see that compiled code is present the compiled call site | |
400 // will be patched/re-resolved so that later calls will run compiled. | |
401 | |
402 // Aditionally a c2i blob need to have a unverified entry because it can be reached | |
403 // in situations where the call site is an inlined cache site and may go megamorphic. | |
404 | |
405 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed | |
406 // that the interpreter before it does any call dispatch will record the current | |
407 // stack pointer in the interpreter frame. On return it will restore the stack | |
408 // pointer as needed. This means the i2c adapter code doesn't need any special | |
409 // handshaking path with compiled code to keep the stack walking correct. | |
410 | |
411 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, | |
412 int total_args_passed, | |
413 int max_arg, | |
414 const BasicType *sig_bt, | |
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415 const VMRegPair *regs, |
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416 AdapterFingerPrint* fingerprint); |
0 | 417 |
418 // OSR support | |
419 | |
420 // OSR_migration_begin will extract the jvm state from an interpreter | |
421 // frame (locals, monitors) and store the data in a piece of C heap | |
422 // storage. This then allows the interpreter frame to be removed from the | |
423 // stack and the OSR nmethod to be called. That method is called with a | |
424 // pointer to the C heap storage. This pointer is the return value from | |
425 // OSR_migration_begin. | |
426 | |
427 static intptr_t* OSR_migration_begin( JavaThread *thread); | |
428 | |
429 // OSR_migration_end is a trivial routine. It is called after the compiled | |
430 // method has extracted the jvm state from the C heap that OSR_migration_begin | |
431 // created. It's entire job is to simply free this storage. | |
432 static void OSR_migration_end ( intptr_t* buf); | |
433 | |
434 // Convert a sig into a calling convention register layout | |
435 // and find interesting things about it. | |
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436 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, int *arg_size); |
0 | 437 static VMReg name_for_receiver(); |
438 | |
439 // "Top of Stack" slots that may be unused by the calling convention but must | |
440 // otherwise be preserved. | |
441 // On Intel these are not necessary and the value can be zero. | |
442 // On Sparc this describes the words reserved for storing a register window | |
443 // when an interrupt occurs. | |
444 static uint out_preserve_stack_slots(); | |
445 | |
446 // Save and restore a native result | |
447 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
448 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
449 | |
450 // Generate a native wrapper for a given method. The method takes arguments | |
451 // in the Java compiled code convention, marshals them to the native | |
452 // convention (handlizes oops, etc), transitions to native, makes the call, | |
453 // returns to java state (possibly blocking), unhandlizes any result and | |
454 // returns. | |
455 static nmethod *generate_native_wrapper(MacroAssembler* masm, | |
456 methodHandle method, | |
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457 int compile_id, |
0 | 458 int total_args_passed, |
459 int max_arg, | |
460 BasicType *sig_bt, | |
461 VMRegPair *regs, | |
462 BasicType ret_type ); | |
463 | |
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464 #ifdef HAVE_DTRACE_H |
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465 // Generate a dtrace wrapper for a given method. The method takes arguments |
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466 // in the Java compiled code convention, marshals them to the native |
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467 // convention (handlizes oops, etc), transitions to native, makes the call, |
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468 // returns to java state (possibly blocking), unhandlizes any result and |
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469 // returns. |
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470 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, |
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471 methodHandle method); |
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472 |
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473 // dtrace support to convert a Java string to utf8 |
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474 static void get_utf(oopDesc* src, address dst); |
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475 #endif // def HAVE_DTRACE_H |
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476 |
0 | 477 // A compiled caller has just called the interpreter, but compiled code |
478 // exists. Patch the caller so he no longer calls into the interpreter. | |
479 static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); | |
480 | |
481 // Slow-path Locking and Unlocking | |
482 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); | |
483 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); | |
484 | |
485 // Resolving of calls | |
486 static address resolve_static_call_C (JavaThread *thread); | |
487 static address resolve_virtual_call_C (JavaThread *thread); | |
488 static address resolve_opt_virtual_call_C(JavaThread *thread); | |
489 | |
490 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) | |
491 static void slow_arraycopy_C(oopDesc* src, jint src_pos, | |
492 oopDesc* dest, jint dest_pos, | |
493 jint length, JavaThread* thread); | |
494 | |
495 // handle ic miss with caller being compiled code | |
496 // wrong method handling (inline cache misses, zombie methods) | |
497 static address handle_wrong_method(JavaThread* thread); | |
498 static address handle_wrong_method_ic_miss(JavaThread* thread); | |
499 | |
500 #ifndef PRODUCT | |
501 | |
502 // Collect and print inline cache miss statistics | |
503 private: | |
504 enum { maxICmiss_count = 100 }; | |
505 static int _ICmiss_index; // length of IC miss histogram | |
506 static int _ICmiss_count[maxICmiss_count]; // miss counts | |
507 static address _ICmiss_at[maxICmiss_count]; // miss addresses | |
508 static void trace_ic_miss(address at); | |
509 | |
510 public: | |
511 static int _monitor_enter_ctr; // monitor enter slow | |
512 static int _monitor_exit_ctr; // monitor exit slow | |
513 static int _throw_null_ctr; // throwing a null-pointer exception | |
514 static int _ic_miss_ctr; // total # of IC misses | |
515 static int _wrong_method_ctr; | |
516 static int _resolve_static_ctr; | |
517 static int _resolve_virtual_ctr; | |
518 static int _resolve_opt_virtual_ctr; | |
519 static int _implicit_null_throws; | |
520 static int _implicit_div0_throws; | |
521 | |
522 static int _jbyte_array_copy_ctr; // Slow-path byte array copy | |
523 static int _jshort_array_copy_ctr; // Slow-path short array copy | |
524 static int _jint_array_copy_ctr; // Slow-path int array copy | |
525 static int _jlong_array_copy_ctr; // Slow-path long array copy | |
526 static int _oop_array_copy_ctr; // Slow-path oop array copy | |
527 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast | |
528 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks | |
529 static int _generic_array_copy_ctr; // Slow-path includes type decoding | |
530 static int _slow_array_copy_ctr; // Slow-path failed out to a method call | |
531 | |
532 static int _new_instance_ctr; // 'new' object requires GC | |
533 static int _new_array_ctr; // 'new' array requires GC | |
534 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; | |
535 static int _find_handler_ctr; // find exception handler | |
536 static int _rethrow_ctr; // rethrow exception | |
537 static int _mon_enter_stub_ctr; // monitor enter stub | |
538 static int _mon_exit_stub_ctr; // monitor exit stub | |
539 static int _mon_enter_ctr; // monitor enter slow | |
540 static int _mon_exit_ctr; // monitor exit slow | |
541 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check | |
542 | |
543 // Statistics code | |
544 // stats for "normal" compiled calls (non-interface) | |
545 static int _nof_normal_calls; // total # of calls | |
546 static int _nof_optimized_calls; // total # of statically-bound calls | |
547 static int _nof_inlined_calls; // total # of inlined normal calls | |
548 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) | |
549 static int _nof_inlined_static_calls; // total # of inlined static calls | |
550 // stats for compiled interface calls | |
551 static int _nof_interface_calls; // total # of compiled calls | |
552 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls | |
553 static int _nof_inlined_interface_calls; // total # of inlined interface calls | |
554 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls | |
555 // stats for runtime exceptions | |
556 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining | |
557 | |
558 public: // for compiler | |
559 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } | |
560 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } | |
561 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } | |
562 static address nof_static_calls_addr() { return (address)&_nof_static_calls; } | |
563 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } | |
564 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } | |
565 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } | |
566 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } | |
567 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } | |
568 static void print_call_statistics(int comp_total); | |
569 static void print_statistics(); | |
570 static void print_ic_miss_histogram(); | |
571 | |
572 #endif // PRODUCT | |
573 }; | |
574 | |
575 | |
576 // --------------------------------------------------------------------------- | |
577 // Implementation of AdapterHandlerLibrary | |
578 // | |
579 // This library manages argument marshaling adapters and native wrappers. | |
580 // There are 2 flavors of adapters: I2C and C2I. | |
581 // | |
1748 | 582 // The I2C flavor takes a stock interpreted call setup, marshals the |
583 // arguments for a Java-compiled call, and jumps to Rmethod-> code()-> | |
584 // code_begin(). It is broken to call it without an nmethod assigned. | |
585 // The usual behavior is to lift any register arguments up out of the | |
586 // stack and possibly re-pack the extra arguments to be contigious. | |
587 // I2C adapters will save what the interpreter's stack pointer will be | |
588 // after arguments are popped, then adjust the interpreter's frame | |
589 // size to force alignment and possibly to repack the arguments. | |
590 // After re-packing, it jumps to the compiled code start. There are | |
591 // no safepoints in this adapter code and a GC cannot happen while | |
592 // marshaling is in progress. | |
0 | 593 // |
594 // The C2I flavor takes a stock compiled call setup plus the target method in | |
595 // Rmethod, marshals the arguments for an interpreted call and jumps to | |
596 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been | |
597 // setup. Compiled frames are fixed-size and the args are likely not in the | |
598 // right place. Hence all the args will likely be copied into the | |
599 // interpreter's frame, forcing that frame to grow. The compiled frame's | |
600 // outgoing stack args will be dead after the copy. | |
601 // | |
602 // Native wrappers, like adapters, marshal arguments. Unlike adapters they | |
603 // also perform an offical frame push & pop. They have a call to the native | |
604 // routine in their middles and end in a return (instead of ending in a jump). | |
605 // The native wrappers are stored in real nmethods instead of the BufferBlobs | |
606 // used by the adapters. The code generation happens here because it's very | |
607 // similar to what the adapters have to do. | |
608 | |
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609 class AdapterHandlerEntry : public BasicHashtableEntry { |
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610 friend class AdapterHandlerTable; |
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611 |
0 | 612 private: |
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613 AdapterFingerPrint* _fingerprint; |
0 | 614 address _i2c_entry; |
615 address _c2i_entry; | |
616 address _c2i_unverified_entry; | |
617 | |
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618 #ifdef ASSERT |
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619 // Captures code and signature used to generate this adapter when |
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620 // verifing adapter equivalence. |
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621 unsigned char* _saved_code; |
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622 int _code_length; |
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623 BasicType* _saved_sig; |
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624 int _total_args_passed; |
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625 #endif |
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626 |
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627 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
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628 _fingerprint = fingerprint; |
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629 _i2c_entry = i2c_entry; |
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630 _c2i_entry = c2i_entry; |
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631 _c2i_unverified_entry = c2i_unverified_entry; |
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632 #ifdef ASSERT |
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633 _saved_code = NULL; |
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634 _code_length = 0; |
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635 _saved_sig = NULL; |
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636 _total_args_passed = 0; |
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637 #endif |
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638 } |
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639 |
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640 void deallocate(); |
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641 |
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642 // should never be used |
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643 AdapterHandlerEntry(); |
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644 |
0 | 645 public: |
646 address get_i2c_entry() { return _i2c_entry; } | |
647 address get_c2i_entry() { return _c2i_entry; } | |
648 address get_c2i_unverified_entry() { return _c2i_unverified_entry; } | |
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649 |
0 | 650 void relocate(address new_base); |
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651 |
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652 AdapterFingerPrint* fingerprint() { return _fingerprint; } |
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653 |
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654 AdapterHandlerEntry* next() { |
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655 return (AdapterHandlerEntry*)BasicHashtableEntry::next(); |
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656 } |
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657 |
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658 #ifdef ASSERT |
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659 // Used to verify that code generated for shared adapters is equivalent |
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660 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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661 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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662 #endif |
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663 |
0 | 664 void print(); |
665 }; | |
666 | |
667 class AdapterHandlerLibrary: public AllStatic { | |
668 private: | |
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669 static BufferBlob* _buffer; // the temporary code buffer in CodeCache |
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670 static AdapterHandlerTable* _adapters; |
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671 static AdapterHandlerEntry* _abstract_method_handler; |
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672 static BufferBlob* buffer_blob(); |
0 | 673 static void initialize(); |
674 | |
675 public: | |
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676 |
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677 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, |
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678 address i2c_entry, address c2i_entry, address c2i_unverified_entry); |
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679 static nmethod* create_native_wrapper(methodHandle method, int compile_id); |
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680 static AdapterHandlerEntry* get_adapter(methodHandle method); |
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681 |
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682 #ifdef HAVE_DTRACE_H |
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683 static nmethod* create_dtrace_nmethod (methodHandle method); |
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684 #endif // HAVE_DTRACE_H |
0 | 685 |
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686 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); } |
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687 static void print_handler_on(outputStream* st, CodeBlob* b); |
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688 static bool contains(CodeBlob* b); |
0 | 689 #ifndef PRODUCT |
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690 static void print_statistics(); |
0 | 691 #endif /* PRODUCT */ |
692 | |
693 }; | |
1972 | 694 |
695 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |