Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/sharedRuntime.hpp @ 7168:73e64867adb7
8003690: Example code in JVMTI GetStackTrace documentation is broken
Summary: Fixed to minor errors in example code
Reviewed-by: sspitsyn, dholmes
author | mikael |
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date | Wed, 21 Nov 2012 09:02:13 -0800 |
parents | 137868b7aa6f |
children | e522a00b91aa db9981fd3124 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |
26 #define SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP | |
27 | |
28 #include "interpreter/bytecodeHistogram.hpp" | |
29 #include "interpreter/bytecodeTracer.hpp" | |
30 #include "interpreter/linkResolver.hpp" | |
31 #include "memory/allocation.hpp" | |
32 #include "memory/resourceArea.hpp" | |
33 #include "runtime/threadLocalStorage.hpp" | |
34 #include "utilities/hashtable.hpp" | |
35 | |
0 | 36 class AdapterHandlerEntry; |
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37 class AdapterHandlerTable; |
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38 class AdapterFingerPrint; |
0 | 39 class vframeStream; |
40 | |
41 // Runtime is the base class for various runtime interfaces | |
42 // (InterpreterRuntime, CompilerRuntime, etc.). It provides | |
43 // shared functionality such as exception forwarding (C++ to | |
44 // Java exceptions), locking/unlocking mechanisms, statistical | |
45 // information, etc. | |
46 | |
47 class SharedRuntime: AllStatic { | |
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48 friend class VMStructs; |
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49 |
0 | 50 private: |
51 static methodHandle resolve_sub_helper(JavaThread *thread, | |
52 bool is_virtual, | |
53 bool is_optimized, TRAPS); | |
54 | |
55 // Shared stub locations | |
56 | |
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57 static RuntimeStub* _wrong_method_blob; |
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58 static RuntimeStub* _ic_miss_blob; |
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59 static RuntimeStub* _resolve_opt_virtual_call_blob; |
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60 static RuntimeStub* _resolve_virtual_call_blob; |
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61 static RuntimeStub* _resolve_static_call_blob; |
0 | 62 |
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63 static DeoptimizationBlob* _deopt_blob; |
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64 |
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65 static SafepointBlob* _polling_page_vectors_safepoint_handler_blob; |
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66 static SafepointBlob* _polling_page_safepoint_handler_blob; |
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67 static SafepointBlob* _polling_page_return_handler_blob; |
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68 |
0 | 69 #ifdef COMPILER2 |
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70 static UncommonTrapBlob* _uncommon_trap_blob; |
0 | 71 #endif // COMPILER2 |
72 | |
73 #ifndef PRODUCT | |
74 // Counters | |
75 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) | |
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76 #endif // !PRODUCT |
0 | 77 |
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78 private: |
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79 enum { POLL_AT_RETURN, POLL_AT_LOOP, POLL_AT_VECTOR_LOOP }; |
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80 static SafepointBlob* generate_handler_blob(address call_ptr, int poll_type); |
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81 static RuntimeStub* generate_resolve_blob(address destination, const char* name); |
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82 |
0 | 83 public: |
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84 static void generate_stubs(void); |
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85 |
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86 // max bytes for each dtrace string parameter |
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87 enum { max_dtrace_string_size = 256 }; |
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88 |
0 | 89 // The following arithmetic routines are used on platforms that do |
90 // not have machine instructions to implement their functionality. | |
91 // Do not remove these. | |
92 | |
93 // long arithmetics | |
94 static jlong lmul(jlong y, jlong x); | |
95 static jlong ldiv(jlong y, jlong x); | |
96 static jlong lrem(jlong y, jlong x); | |
97 | |
98 // float and double remainder | |
99 static jfloat frem(jfloat x, jfloat y); | |
100 static jdouble drem(jdouble x, jdouble y); | |
101 | |
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102 #ifdef __SOFTFP__ |
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103 static jfloat fadd(jfloat x, jfloat y); |
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104 static jfloat fsub(jfloat x, jfloat y); |
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105 static jfloat fmul(jfloat x, jfloat y); |
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106 static jfloat fdiv(jfloat x, jfloat y); |
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107 |
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108 static jdouble dadd(jdouble x, jdouble y); |
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109 static jdouble dsub(jdouble x, jdouble y); |
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110 static jdouble dmul(jdouble x, jdouble y); |
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111 static jdouble ddiv(jdouble x, jdouble y); |
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112 #endif // __SOFTFP__ |
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113 |
0 | 114 // float conversion (needs to set appropriate rounding mode) |
115 static jint f2i (jfloat x); | |
116 static jlong f2l (jfloat x); | |
117 static jint d2i (jdouble x); | |
118 static jlong d2l (jdouble x); | |
119 static jfloat d2f (jdouble x); | |
120 static jfloat l2f (jlong x); | |
121 static jdouble l2d (jlong x); | |
122 | |
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123 #ifdef __SOFTFP__ |
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124 static jfloat i2f (jint x); |
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125 static jdouble i2d (jint x); |
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126 static jdouble f2d (jfloat x); |
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127 #endif // __SOFTFP__ |
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128 |
0 | 129 // double trigonometrics and transcendentals |
130 static jdouble dsin(jdouble x); | |
131 static jdouble dcos(jdouble x); | |
132 static jdouble dtan(jdouble x); | |
133 static jdouble dlog(jdouble x); | |
134 static jdouble dlog10(jdouble x); | |
135 static jdouble dexp(jdouble x); | |
136 static jdouble dpow(jdouble x, jdouble y); | |
137 | |
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138 #if defined(__SOFTFP__) || defined(E500V2) |
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139 static double dabs(double f); |
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140 #endif |
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141 |
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142 #if defined(__SOFTFP__) || defined(PPC) |
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143 static double dsqrt(double f); |
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144 #endif |
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145 |
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146 #ifdef __SOFTFP__ |
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147 // C++ compiler generates soft float instructions as well as passing |
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148 // float and double in registers. |
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149 static int fcmpl(float x, float y); |
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150 static int fcmpg(float x, float y); |
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151 static int dcmpl(double x, double y); |
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152 static int dcmpg(double x, double y); |
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153 |
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154 static int unordered_fcmplt(float x, float y); |
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155 static int unordered_dcmplt(double x, double y); |
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156 static int unordered_fcmple(float x, float y); |
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157 static int unordered_dcmple(double x, double y); |
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158 static int unordered_fcmpge(float x, float y); |
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159 static int unordered_dcmpge(double x, double y); |
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160 static int unordered_fcmpgt(float x, float y); |
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161 static int unordered_dcmpgt(double x, double y); |
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162 |
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163 static float fneg(float f); |
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164 static double dneg(double f); |
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165 #endif |
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166 |
0 | 167 // exception handling across interpreter/compiler boundaries |
1295 | 168 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address); |
169 static address exception_handler_for_return_address(JavaThread* thread, address return_address); | |
0 | 170 |
342
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171 #ifndef SERIALGC |
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172 // G1 write barriers |
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173 static void g1_wb_pre(oopDesc* orig, JavaThread *thread); |
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174 static void g1_wb_post(void* card_addr, JavaThread* thread); |
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175 #endif // !SERIALGC |
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176 |
0 | 177 // exception handling and implicit exceptions |
178 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
179 bool force_unwind, bool top_frame_only); | |
180 enum ImplicitExceptionKind { | |
181 IMPLICIT_NULL, | |
182 IMPLICIT_DIVIDE_BY_ZERO, | |
183 STACK_OVERFLOW | |
184 }; | |
185 static void throw_AbstractMethodError(JavaThread* thread); | |
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186 static void throw_IncompatibleClassChangeError(JavaThread* thread); |
0 | 187 static void throw_ArithmeticException(JavaThread* thread); |
188 static void throw_NullPointerException(JavaThread* thread); | |
189 static void throw_NullPointerException_at_call(JavaThread* thread); | |
190 static void throw_StackOverflowError(JavaThread* thread); | |
191 static address continuation_for_implicit_exception(JavaThread* thread, | |
192 address faulting_pc, | |
193 ImplicitExceptionKind exception_kind); | |
194 | |
195 // Shared stub locations | |
196 static address get_poll_stub(address pc); | |
197 | |
198 static address get_ic_miss_stub() { | |
199 assert(_ic_miss_blob!= NULL, "oops"); | |
1748 | 200 return _ic_miss_blob->entry_point(); |
0 | 201 } |
202 | |
203 static address get_handle_wrong_method_stub() { | |
204 assert(_wrong_method_blob!= NULL, "oops"); | |
1748 | 205 return _wrong_method_blob->entry_point(); |
0 | 206 } |
207 | |
208 #ifdef COMPILER2 | |
209 static void generate_uncommon_trap_blob(void); | |
210 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } | |
211 #endif // COMPILER2 | |
212 | |
213 static address get_resolve_opt_virtual_call_stub(){ | |
214 assert(_resolve_opt_virtual_call_blob != NULL, "oops"); | |
1748 | 215 return _resolve_opt_virtual_call_blob->entry_point(); |
0 | 216 } |
217 static address get_resolve_virtual_call_stub() { | |
218 assert(_resolve_virtual_call_blob != NULL, "oops"); | |
1748 | 219 return _resolve_virtual_call_blob->entry_point(); |
0 | 220 } |
221 static address get_resolve_static_call_stub() { | |
222 assert(_resolve_static_call_blob != NULL, "oops"); | |
1748 | 223 return _resolve_static_call_blob->entry_point(); |
0 | 224 } |
225 | |
226 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } | |
227 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } | |
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228 static SafepointBlob* polling_page_vectors_safepoint_handler_blob() { return _polling_page_vectors_safepoint_handler_blob; } |
0 | 229 |
230 // Counters | |
231 #ifndef PRODUCT | |
232 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } | |
233 #endif // PRODUCT | |
234 | |
235 // Helper routine for full-speed JVMTI exception throwing support | |
236 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); | |
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237 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL); |
0 | 238 |
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239 // RedefineClasses() tracing support for obsolete method entry |
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240 static int rc_trace_method_entry(JavaThread* thread, Method* m); |
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241 |
0 | 242 // To be used as the entry point for unresolved native methods. |
243 static address native_method_throw_unsatisfied_link_error_entry(); | |
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244 static address native_method_throw_unsupported_operation_exception_entry(); |
0 | 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); | |
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259 static int dtrace_method_entry(JavaThread* thread, Method* m); |
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260 static int dtrace_method_exit(JavaThread* thread, Method* m); |
0 | 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 /** | |
286 * Fill in the "X cannot be cast to a Y" message for ClassCastException | |
287 * | |
288 * @param name the name of the class of the object attempted to be cast | |
289 * @param klass the name of the target klass attempt | |
710 | 290 * @param gripe the specific kind of problem being reported |
0 | 291 * @return the dynamically allocated exception message (must be freed |
292 * by the caller using a resource mark) | |
293 * | |
294 * This version does not require access the frame, so it can be called | |
295 * from interpreted code | |
296 * The caller (or one of it's callers) must use a ResourceMark | |
297 * in order to correctly free the result. | |
298 */ | |
710 | 299 static char* generate_class_cast_message(const char* name, const char* klass, |
300 const char* gripe = " cannot be cast to "); | |
0 | 301 |
302 // Resolves a call site- may patch in the destination of the call into the | |
303 // compiled code. | |
304 static methodHandle resolve_helper(JavaThread *thread, | |
305 bool is_virtual, | |
306 bool is_optimized, TRAPS); | |
307 | |
308 private: | |
309 // deopt blob | |
310 static void generate_deopt_blob(void); | |
311 | |
312 public: | |
313 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } | |
314 | |
315 // Resets a call-site in compiled code so it will get resolved again. | |
316 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); | |
317 | |
318 // In the code prolog, if the klass comparison fails, the inline cache | |
319 // misses and the call site is patched to megamorphic | |
320 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); | |
321 | |
322 // Find the method that called us. | |
323 static methodHandle find_callee_method(JavaThread* thread, TRAPS); | |
324 | |
325 | |
326 private: | |
327 static Handle find_callee_info(JavaThread* thread, | |
328 Bytecodes::Code& bc, | |
329 CallInfo& callinfo, TRAPS); | |
330 static Handle find_callee_info_helper(JavaThread* thread, | |
331 vframeStream& vfst, | |
332 Bytecodes::Code& bc, | |
333 CallInfo& callinfo, TRAPS); | |
334 | |
335 static address clean_virtual_call_entry(); | |
336 static address clean_opt_virtual_call_entry(); | |
337 static address clean_static_call_entry(); | |
338 | |
339 public: | |
340 | |
341 // Read the array of BasicTypes from a Java signature, and compute where | |
342 // compiled Java code would like to put the results. Values in reg_lo and | |
343 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are | |
344 // registers, those above refer to 4-byte stack slots. All stack slots are | |
345 // based off of the window top. SharedInfo::stack0 refers to the first usable | |
346 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word | |
347 // 4-bytes higher. So for sparc because the register window save area is at | |
348 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 | |
349 // will be just above it. ( | |
350 // return value is the maximum number of VMReg stack slots the convention will use. | |
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351 static int java_calling_convention(const BasicType* sig_bt, VMRegPair* regs, int total_args_passed, int is_outgoing); |
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352 |
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353 static void check_member_name_argument_is_last_argument(methodHandle method, |
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354 const BasicType* sig_bt, |
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355 const VMRegPair* regs) NOT_DEBUG_RETURN; |
0 | 356 |
357 // Ditto except for calling C | |
358 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); | |
359 | |
360 // Generate I2C and C2I adapters. These adapters are simple argument marshalling | |
361 // blobs. Unlike adapters in the tiger and earlier releases the code in these | |
362 // blobs does not create a new frame and are therefore virtually invisible | |
363 // to the stack walking code. In general these blobs extend the callers stack | |
364 // as needed for the conversion of argument locations. | |
365 | |
366 // When calling a c2i blob the code will always call the interpreter even if | |
367 // by the time we reach the blob there is compiled code available. This allows | |
368 // the blob to pass the incoming stack pointer (the sender sp) in a known | |
369 // location for the interpreter to record. This is used by the frame code | |
370 // to correct the sender code to match up with the stack pointer when the | |
371 // thread left the compiled code. In addition it allows the interpreter | |
372 // to remove the space the c2i adapter allocated to do it argument conversion. | |
373 | |
374 // Although a c2i blob will always run interpreted even if compiled code is | |
375 // present if we see that compiled code is present the compiled call site | |
376 // will be patched/re-resolved so that later calls will run compiled. | |
377 | |
378 // Aditionally a c2i blob need to have a unverified entry because it can be reached | |
379 // in situations where the call site is an inlined cache site and may go megamorphic. | |
380 | |
381 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed | |
382 // that the interpreter before it does any call dispatch will record the current | |
383 // stack pointer in the interpreter frame. On return it will restore the stack | |
384 // pointer as needed. This means the i2c adapter code doesn't need any special | |
385 // handshaking path with compiled code to keep the stack walking correct. | |
386 | |
387 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, | |
388 int total_args_passed, | |
389 int max_arg, | |
390 const BasicType *sig_bt, | |
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391 const VMRegPair *regs, |
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392 AdapterFingerPrint* fingerprint); |
0 | 393 |
394 // OSR support | |
395 | |
396 // OSR_migration_begin will extract the jvm state from an interpreter | |
397 // frame (locals, monitors) and store the data in a piece of C heap | |
398 // storage. This then allows the interpreter frame to be removed from the | |
399 // stack and the OSR nmethod to be called. That method is called with a | |
400 // pointer to the C heap storage. This pointer is the return value from | |
401 // OSR_migration_begin. | |
402 | |
403 static intptr_t* OSR_migration_begin( JavaThread *thread); | |
404 | |
405 // OSR_migration_end is a trivial routine. It is called after the compiled | |
406 // method has extracted the jvm state from the C heap that OSR_migration_begin | |
407 // created. It's entire job is to simply free this storage. | |
408 static void OSR_migration_end ( intptr_t* buf); | |
409 | |
410 // Convert a sig into a calling convention register layout | |
411 // and find interesting things about it. | |
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412 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, int *arg_size); |
0 | 413 static VMReg name_for_receiver(); |
414 | |
415 // "Top of Stack" slots that may be unused by the calling convention but must | |
416 // otherwise be preserved. | |
417 // On Intel these are not necessary and the value can be zero. | |
418 // On Sparc this describes the words reserved for storing a register window | |
419 // when an interrupt occurs. | |
420 static uint out_preserve_stack_slots(); | |
421 | |
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422 // Is vector's size (in bytes) bigger than a size saved by default? |
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423 // For example, on x86 16 bytes XMM registers are saved by default. |
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424 static bool is_wide_vector(int size); |
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425 |
0 | 426 // Save and restore a native result |
427 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
428 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
429 | |
430 // Generate a native wrapper for a given method. The method takes arguments | |
431 // in the Java compiled code convention, marshals them to the native | |
432 // convention (handlizes oops, etc), transitions to native, makes the call, | |
433 // returns to java state (possibly blocking), unhandlizes any result and | |
434 // returns. | |
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435 // |
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436 // The wrapper may contain special-case code if the given method |
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437 // is a JNI critical method, or a compiled method handle adapter, |
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438 // such as _invokeBasic, _linkToVirtual, etc. |
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439 static nmethod* generate_native_wrapper(MacroAssembler* masm, |
0 | 440 methodHandle method, |
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441 int compile_id, |
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442 BasicType* sig_bt, |
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443 VMRegPair* regs, |
0 | 444 BasicType ret_type ); |
445 | |
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446 // Block before entering a JNI critical method |
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447 static void block_for_jni_critical(JavaThread* thread); |
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448 |
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449 #ifdef HAVE_DTRACE_H |
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450 // Generate a dtrace wrapper for a given method. The method takes arguments |
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451 // in the Java compiled code convention, marshals them to the native |
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452 // convention (handlizes oops, etc), transitions to native, makes the call, |
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453 // returns to java state (possibly blocking), unhandlizes any result and |
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454 // returns. |
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455 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, |
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456 methodHandle method); |
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457 |
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458 // dtrace support to convert a Java string to utf8 |
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459 static void get_utf(oopDesc* src, address dst); |
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460 #endif // def HAVE_DTRACE_H |
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461 |
0 | 462 // A compiled caller has just called the interpreter, but compiled code |
463 // exists. Patch the caller so he no longer calls into the interpreter. | |
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464 static void fixup_callers_callsite(Method* moop, address ret_pc); |
0 | 465 |
466 // Slow-path Locking and Unlocking | |
467 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); | |
468 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); | |
469 | |
470 // Resolving of calls | |
471 static address resolve_static_call_C (JavaThread *thread); | |
472 static address resolve_virtual_call_C (JavaThread *thread); | |
473 static address resolve_opt_virtual_call_C(JavaThread *thread); | |
474 | |
475 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) | |
476 static void slow_arraycopy_C(oopDesc* src, jint src_pos, | |
477 oopDesc* dest, jint dest_pos, | |
478 jint length, JavaThread* thread); | |
479 | |
480 // handle ic miss with caller being compiled code | |
481 // wrong method handling (inline cache misses, zombie methods) | |
482 static address handle_wrong_method(JavaThread* thread); | |
483 static address handle_wrong_method_ic_miss(JavaThread* thread); | |
484 | |
485 #ifndef PRODUCT | |
486 | |
487 // Collect and print inline cache miss statistics | |
488 private: | |
489 enum { maxICmiss_count = 100 }; | |
490 static int _ICmiss_index; // length of IC miss histogram | |
491 static int _ICmiss_count[maxICmiss_count]; // miss counts | |
492 static address _ICmiss_at[maxICmiss_count]; // miss addresses | |
493 static void trace_ic_miss(address at); | |
494 | |
495 public: | |
496 static int _monitor_enter_ctr; // monitor enter slow | |
497 static int _monitor_exit_ctr; // monitor exit slow | |
498 static int _throw_null_ctr; // throwing a null-pointer exception | |
499 static int _ic_miss_ctr; // total # of IC misses | |
500 static int _wrong_method_ctr; | |
501 static int _resolve_static_ctr; | |
502 static int _resolve_virtual_ctr; | |
503 static int _resolve_opt_virtual_ctr; | |
504 static int _implicit_null_throws; | |
505 static int _implicit_div0_throws; | |
506 | |
507 static int _jbyte_array_copy_ctr; // Slow-path byte array copy | |
508 static int _jshort_array_copy_ctr; // Slow-path short array copy | |
509 static int _jint_array_copy_ctr; // Slow-path int array copy | |
510 static int _jlong_array_copy_ctr; // Slow-path long array copy | |
511 static int _oop_array_copy_ctr; // Slow-path oop array copy | |
512 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast | |
513 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks | |
514 static int _generic_array_copy_ctr; // Slow-path includes type decoding | |
515 static int _slow_array_copy_ctr; // Slow-path failed out to a method call | |
516 | |
517 static int _new_instance_ctr; // 'new' object requires GC | |
518 static int _new_array_ctr; // 'new' array requires GC | |
519 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; | |
520 static int _find_handler_ctr; // find exception handler | |
521 static int _rethrow_ctr; // rethrow exception | |
522 static int _mon_enter_stub_ctr; // monitor enter stub | |
523 static int _mon_exit_stub_ctr; // monitor exit stub | |
524 static int _mon_enter_ctr; // monitor enter slow | |
525 static int _mon_exit_ctr; // monitor exit slow | |
526 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check | |
527 | |
528 // Statistics code | |
529 // stats for "normal" compiled calls (non-interface) | |
530 static int _nof_normal_calls; // total # of calls | |
531 static int _nof_optimized_calls; // total # of statically-bound calls | |
532 static int _nof_inlined_calls; // total # of inlined normal calls | |
533 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) | |
534 static int _nof_inlined_static_calls; // total # of inlined static calls | |
535 // stats for compiled interface calls | |
536 static int _nof_interface_calls; // total # of compiled calls | |
537 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls | |
538 static int _nof_inlined_interface_calls; // total # of inlined interface calls | |
539 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls | |
540 // stats for runtime exceptions | |
541 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining | |
542 | |
543 public: // for compiler | |
544 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } | |
545 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } | |
546 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } | |
547 static address nof_static_calls_addr() { return (address)&_nof_static_calls; } | |
548 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } | |
549 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } | |
550 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } | |
551 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } | |
552 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } | |
553 static void print_call_statistics(int comp_total); | |
554 static void print_statistics(); | |
555 static void print_ic_miss_histogram(); | |
556 | |
557 #endif // PRODUCT | |
558 }; | |
559 | |
560 | |
561 // --------------------------------------------------------------------------- | |
562 // Implementation of AdapterHandlerLibrary | |
563 // | |
564 // This library manages argument marshaling adapters and native wrappers. | |
565 // There are 2 flavors of adapters: I2C and C2I. | |
566 // | |
1748 | 567 // The I2C flavor takes a stock interpreted call setup, marshals the |
568 // arguments for a Java-compiled call, and jumps to Rmethod-> code()-> | |
569 // code_begin(). It is broken to call it without an nmethod assigned. | |
570 // The usual behavior is to lift any register arguments up out of the | |
571 // stack and possibly re-pack the extra arguments to be contigious. | |
572 // I2C adapters will save what the interpreter's stack pointer will be | |
573 // after arguments are popped, then adjust the interpreter's frame | |
574 // size to force alignment and possibly to repack the arguments. | |
575 // After re-packing, it jumps to the compiled code start. There are | |
576 // no safepoints in this adapter code and a GC cannot happen while | |
577 // marshaling is in progress. | |
0 | 578 // |
579 // The C2I flavor takes a stock compiled call setup plus the target method in | |
580 // Rmethod, marshals the arguments for an interpreted call and jumps to | |
581 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been | |
582 // setup. Compiled frames are fixed-size and the args are likely not in the | |
583 // right place. Hence all the args will likely be copied into the | |
584 // interpreter's frame, forcing that frame to grow. The compiled frame's | |
585 // outgoing stack args will be dead after the copy. | |
586 // | |
587 // Native wrappers, like adapters, marshal arguments. Unlike adapters they | |
588 // also perform an offical frame push & pop. They have a call to the native | |
589 // routine in their middles and end in a return (instead of ending in a jump). | |
590 // The native wrappers are stored in real nmethods instead of the BufferBlobs | |
591 // used by the adapters. The code generation happens here because it's very | |
592 // similar to what the adapters have to do. | |
593 | |
6197 | 594 class AdapterHandlerEntry : public BasicHashtableEntry<mtCode> { |
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595 friend class AdapterHandlerTable; |
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596 |
0 | 597 private: |
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598 AdapterFingerPrint* _fingerprint; |
0 | 599 address _i2c_entry; |
600 address _c2i_entry; | |
601 address _c2i_unverified_entry; | |
602 | |
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603 #ifdef ASSERT |
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604 // Captures code and signature used to generate this adapter when |
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605 // verifing adapter equivalence. |
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606 unsigned char* _saved_code; |
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607 int _code_length; |
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608 BasicType* _saved_sig; |
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609 int _total_args_passed; |
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610 #endif |
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611 |
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612 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
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613 _fingerprint = fingerprint; |
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614 _i2c_entry = i2c_entry; |
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615 _c2i_entry = c2i_entry; |
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616 _c2i_unverified_entry = c2i_unverified_entry; |
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617 #ifdef ASSERT |
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618 _saved_code = NULL; |
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619 _code_length = 0; |
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620 _saved_sig = NULL; |
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621 _total_args_passed = 0; |
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622 #endif |
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623 } |
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624 |
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625 void deallocate(); |
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626 |
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627 // should never be used |
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628 AdapterHandlerEntry(); |
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629 |
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631 address get_i2c_entry() const { return _i2c_entry; } |
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632 address get_c2i_entry() const { return _c2i_entry; } |
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633 address get_c2i_unverified_entry() const { return _c2i_unverified_entry; } |
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634 |
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635 address base_address(); |
0 | 636 void relocate(address new_base); |
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637 |
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638 AdapterFingerPrint* fingerprint() const { return _fingerprint; } |
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639 |
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640 AdapterHandlerEntry* next() { |
6197 | 641 return (AdapterHandlerEntry*)BasicHashtableEntry<mtCode>::next(); |
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642 } |
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643 |
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644 #ifdef ASSERT |
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645 // Used to verify that code generated for shared adapters is equivalent |
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646 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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647 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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648 #endif |
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649 |
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650 //virtual void print_on(outputStream* st) const; DO NOT USE |
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651 void print_adapter_on(outputStream* st) const; |
0 | 652 }; |
653 | |
654 class AdapterHandlerLibrary: public AllStatic { | |
655 private: | |
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656 static BufferBlob* _buffer; // the temporary code buffer in CodeCache |
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657 static AdapterHandlerTable* _adapters; |
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658 static AdapterHandlerEntry* _abstract_method_handler; |
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659 static BufferBlob* buffer_blob(); |
0 | 660 static void initialize(); |
661 | |
662 public: | |
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663 |
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664 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, |
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665 address i2c_entry, address c2i_entry, address c2i_unverified_entry); |
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666 static nmethod* create_native_wrapper(methodHandle method, int compile_id); |
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667 static AdapterHandlerEntry* get_adapter(methodHandle method); |
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668 |
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669 #ifdef HAVE_DTRACE_H |
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670 static nmethod* create_dtrace_nmethod (methodHandle method); |
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671 #endif // HAVE_DTRACE_H |
0 | 672 |
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673 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); } |
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674 static void print_handler_on(outputStream* st, CodeBlob* b); |
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675 static bool contains(CodeBlob* b); |
0 | 676 #ifndef PRODUCT |
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677 static void print_statistics(); |
0 | 678 #endif /* PRODUCT */ |
679 | |
680 }; | |
1972 | 681 |
682 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |