Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/sharedRuntime.hpp @ 4837:eff609af17d7
7127706: G1: re-enable survivors during the initial-mark pause
Summary: Re-enable survivors during the initial-mark pause. Afterwards, the concurrent marking threads have to scan them and mark everything reachable from them. The next GC will have to wait for the survivors to be scanned.
Reviewed-by: brutisso, johnc
author | tonyp |
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date | Wed, 25 Jan 2012 12:58:23 -0500 |
parents | 7588156f5cf9 |
children | 04b9a2566eec 0382d2b469b2 |
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 { | |
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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 static RicochetBlob* _ricochet_blob; |
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65 |
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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 static SafepointBlob* generate_handler_blob(address call_ptr, bool cause_return); |
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80 static RuntimeStub* generate_resolve_blob(address destination, const char* name); |
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81 |
0 | 82 public: |
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83 static void generate_stubs(void); |
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84 |
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85 // max bytes for each dtrace string parameter |
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86 enum { max_dtrace_string_size = 256 }; |
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87 |
0 | 88 // The following arithmetic routines are used on platforms that do |
89 // not have machine instructions to implement their functionality. | |
90 // Do not remove these. | |
91 | |
92 // long arithmetics | |
93 static jlong lmul(jlong y, jlong x); | |
94 static jlong ldiv(jlong y, jlong x); | |
95 static jlong lrem(jlong y, jlong x); | |
96 | |
97 // float and double remainder | |
98 static jfloat frem(jfloat x, jfloat y); | |
99 static jdouble drem(jdouble x, jdouble y); | |
100 | |
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101 #ifdef __SOFTFP__ |
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102 static jfloat fadd(jfloat x, jfloat y); |
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103 static jfloat fsub(jfloat x, jfloat y); |
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104 static jfloat fmul(jfloat x, jfloat y); |
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105 static jfloat fdiv(jfloat x, jfloat y); |
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106 |
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107 static jdouble dadd(jdouble x, jdouble y); |
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108 static jdouble dsub(jdouble x, jdouble y); |
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109 static jdouble dmul(jdouble x, jdouble y); |
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110 static jdouble ddiv(jdouble x, jdouble y); |
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111 #endif // __SOFTFP__ |
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112 |
0 | 113 // float conversion (needs to set appropriate rounding mode) |
114 static jint f2i (jfloat x); | |
115 static jlong f2l (jfloat x); | |
116 static jint d2i (jdouble x); | |
117 static jlong d2l (jdouble x); | |
118 static jfloat d2f (jdouble x); | |
119 static jfloat l2f (jlong x); | |
120 static jdouble l2d (jlong x); | |
121 | |
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122 #ifdef __SOFTFP__ |
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123 static jfloat i2f (jint x); |
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124 static jdouble i2d (jint x); |
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125 static jdouble f2d (jfloat x); |
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126 #endif // __SOFTFP__ |
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127 |
0 | 128 // double trigonometrics and transcendentals |
129 static jdouble dsin(jdouble x); | |
130 static jdouble dcos(jdouble x); | |
131 static jdouble dtan(jdouble x); | |
132 static jdouble dlog(jdouble x); | |
133 static jdouble dlog10(jdouble x); | |
134 static jdouble dexp(jdouble x); | |
135 static jdouble dpow(jdouble x, jdouble y); | |
136 | |
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137 #if defined(__SOFTFP__) || defined(E500V2) |
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138 static double dabs(double f); |
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139 #endif |
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140 |
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141 #if defined(__SOFTFP__) || defined(PPC) |
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142 static double dsqrt(double f); |
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143 #endif |
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144 |
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145 #ifdef __SOFTFP__ |
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146 // C++ compiler generates soft float instructions as well as passing |
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147 // float and double in registers. |
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148 static int fcmpl(float x, float y); |
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149 static int fcmpg(float x, float y); |
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150 static int dcmpl(double x, double y); |
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151 static int dcmpg(double x, double y); |
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152 |
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153 static int unordered_fcmplt(float x, float y); |
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154 static int unordered_dcmplt(double x, double y); |
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155 static int unordered_fcmple(float x, float y); |
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156 static int unordered_dcmple(double x, double y); |
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157 static int unordered_fcmpge(float x, float y); |
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158 static int unordered_dcmpge(double x, double y); |
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159 static int unordered_fcmpgt(float x, float y); |
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160 static int unordered_dcmpgt(double x, double y); |
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161 |
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162 static float fneg(float f); |
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163 static double dneg(double f); |
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164 #endif |
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165 |
0 | 166 // exception handling across interpreter/compiler boundaries |
1295 | 167 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address); |
168 static address exception_handler_for_return_address(JavaThread* thread, address return_address); | |
0 | 169 |
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170 #ifndef SERIALGC |
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171 // G1 write barriers |
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172 static void g1_wb_pre(oopDesc* orig, JavaThread *thread); |
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173 static void g1_wb_post(void* card_addr, JavaThread* thread); |
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174 #endif // !SERIALGC |
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175 |
0 | 176 // exception handling and implicit exceptions |
177 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
178 bool force_unwind, bool top_frame_only); | |
179 enum ImplicitExceptionKind { | |
180 IMPLICIT_NULL, | |
181 IMPLICIT_DIVIDE_BY_ZERO, | |
182 STACK_OVERFLOW | |
183 }; | |
184 static void throw_AbstractMethodError(JavaThread* thread); | |
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185 static void throw_IncompatibleClassChangeError(JavaThread* thread); |
0 | 186 static void throw_ArithmeticException(JavaThread* thread); |
187 static void throw_NullPointerException(JavaThread* thread); | |
188 static void throw_NullPointerException_at_call(JavaThread* thread); | |
189 static void throw_StackOverflowError(JavaThread* thread); | |
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190 static void throw_WrongMethodTypeException(JavaThread* thread, oopDesc* required, oopDesc* actual); |
0 | 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 | |
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226 static RicochetBlob* ricochet_blob() { |
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227 #ifdef X86 |
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228 // Currently only implemented on x86 |
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229 assert(!EnableInvokeDynamic || _ricochet_blob != NULL, "oops"); |
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230 #endif |
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231 return _ricochet_blob; |
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232 } |
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233 |
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234 static void generate_ricochet_blob(); |
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235 |
0 | 236 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } |
237 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } | |
238 | |
239 // Counters | |
240 #ifndef PRODUCT | |
241 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } | |
242 #endif // PRODUCT | |
243 | |
244 // Helper routine for full-speed JVMTI exception throwing support | |
245 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); | |
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246 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL); |
0 | 247 |
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248 // RedefineClasses() tracing support for obsolete method entry |
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249 static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m); |
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250 |
0 | 251 // To be used as the entry point for unresolved native methods. |
252 static address native_method_throw_unsatisfied_link_error_entry(); | |
253 | |
254 // bytecode tracing is only used by the TraceBytecodes | |
255 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; | |
256 | |
257 // Used to back off a spin lock that is under heavy contention | |
258 static void yield_all(JavaThread* thread, int attempts = 0); | |
259 | |
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260 static oop retrieve_receiver( Symbol* sig, frame caller ); |
0 | 261 |
262 static void register_finalizer(JavaThread* thread, oopDesc* obj); | |
263 | |
264 // dtrace notifications | |
265 static int dtrace_object_alloc(oopDesc* o); | |
266 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); | |
267 static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m); | |
268 static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m); | |
269 | |
270 // Utility method for retrieving the Java thread id, returns 0 if the | |
271 // thread is not a well formed Java thread. | |
272 static jlong get_java_tid(Thread* thread); | |
273 | |
274 | |
275 // used by native wrappers to reenable yellow if overflow happened in native code | |
276 static void reguard_yellow_pages(); | |
277 | |
278 /** | |
279 * Fill in the "X cannot be cast to a Y" message for ClassCastException | |
280 * | |
281 * @param thr the current thread | |
282 * @param name the name of the class of the object attempted to be cast | |
283 * @return the dynamically allocated exception message (must be freed | |
284 * by the caller using a resource mark) | |
285 * | |
286 * BCP must refer to the current 'checkcast' opcode for the frame | |
287 * on top of the stack. | |
288 * The caller (or one of it's callers) must use a ResourceMark | |
289 * in order to correctly free the result. | |
290 */ | |
291 static char* generate_class_cast_message(JavaThread* thr, const char* name); | |
292 | |
293 /** | |
710 | 294 * Fill in the message for a WrongMethodTypeException |
295 * | |
296 * @param thr the current thread | |
297 * @param mtype (optional) expected method type (or argument class) | |
298 * @param mhandle (optional) actual method handle (or argument) | |
299 * @return the dynamically allocated exception message | |
300 * | |
301 * BCP for the frame on top of the stack must refer to an | |
302 * 'invokevirtual' op for a method handle, or an 'invokedyamic' op. | |
303 * The caller (or one of its callers) must use a ResourceMark | |
304 * in order to correctly free the result. | |
305 */ | |
306 static char* generate_wrong_method_type_message(JavaThread* thr, | |
307 oopDesc* mtype = NULL, | |
308 oopDesc* mhandle = NULL); | |
309 | |
310 /** Return non-null if the mtype is a klass or Class, not a MethodType. */ | |
311 static oop wrong_method_type_is_for_single_argument(JavaThread* thr, | |
312 oopDesc* mtype); | |
313 | |
314 /** | |
0 | 315 * Fill in the "X cannot be cast to a Y" message for ClassCastException |
316 * | |
317 * @param name the name of the class of the object attempted to be cast | |
318 * @param klass the name of the target klass attempt | |
710 | 319 * @param gripe the specific kind of problem being reported |
0 | 320 * @return the dynamically allocated exception message (must be freed |
321 * by the caller using a resource mark) | |
322 * | |
323 * This version does not require access the frame, so it can be called | |
324 * from interpreted code | |
325 * The caller (or one of it's callers) must use a ResourceMark | |
326 * in order to correctly free the result. | |
327 */ | |
710 | 328 static char* generate_class_cast_message(const char* name, const char* klass, |
329 const char* gripe = " cannot be cast to "); | |
0 | 330 |
331 // Resolves a call site- may patch in the destination of the call into the | |
332 // compiled code. | |
333 static methodHandle resolve_helper(JavaThread *thread, | |
334 bool is_virtual, | |
335 bool is_optimized, TRAPS); | |
336 | |
337 private: | |
338 // deopt blob | |
339 static void generate_deopt_blob(void); | |
340 | |
341 public: | |
342 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } | |
343 | |
344 // Resets a call-site in compiled code so it will get resolved again. | |
345 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); | |
346 | |
347 // In the code prolog, if the klass comparison fails, the inline cache | |
348 // misses and the call site is patched to megamorphic | |
349 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); | |
350 | |
351 // Find the method that called us. | |
352 static methodHandle find_callee_method(JavaThread* thread, TRAPS); | |
353 | |
354 | |
355 private: | |
356 static Handle find_callee_info(JavaThread* thread, | |
357 Bytecodes::Code& bc, | |
358 CallInfo& callinfo, TRAPS); | |
359 static Handle find_callee_info_helper(JavaThread* thread, | |
360 vframeStream& vfst, | |
361 Bytecodes::Code& bc, | |
362 CallInfo& callinfo, TRAPS); | |
363 | |
364 static address clean_virtual_call_entry(); | |
365 static address clean_opt_virtual_call_entry(); | |
366 static address clean_static_call_entry(); | |
367 | |
368 public: | |
369 | |
370 // Read the array of BasicTypes from a Java signature, and compute where | |
371 // compiled Java code would like to put the results. Values in reg_lo and | |
372 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are | |
373 // registers, those above refer to 4-byte stack slots. All stack slots are | |
374 // based off of the window top. SharedInfo::stack0 refers to the first usable | |
375 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word | |
376 // 4-bytes higher. So for sparc because the register window save area is at | |
377 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 | |
378 // will be just above it. ( | |
379 // return value is the maximum number of VMReg stack slots the convention will use. | |
380 static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing); | |
381 | |
382 // Ditto except for calling C | |
383 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); | |
384 | |
385 // Generate I2C and C2I adapters. These adapters are simple argument marshalling | |
386 // blobs. Unlike adapters in the tiger and earlier releases the code in these | |
387 // blobs does not create a new frame and are therefore virtually invisible | |
388 // to the stack walking code. In general these blobs extend the callers stack | |
389 // as needed for the conversion of argument locations. | |
390 | |
391 // When calling a c2i blob the code will always call the interpreter even if | |
392 // by the time we reach the blob there is compiled code available. This allows | |
393 // the blob to pass the incoming stack pointer (the sender sp) in a known | |
394 // location for the interpreter to record. This is used by the frame code | |
395 // to correct the sender code to match up with the stack pointer when the | |
396 // thread left the compiled code. In addition it allows the interpreter | |
397 // to remove the space the c2i adapter allocated to do it argument conversion. | |
398 | |
399 // Although a c2i blob will always run interpreted even if compiled code is | |
400 // present if we see that compiled code is present the compiled call site | |
401 // will be patched/re-resolved so that later calls will run compiled. | |
402 | |
403 // Aditionally a c2i blob need to have a unverified entry because it can be reached | |
404 // in situations where the call site is an inlined cache site and may go megamorphic. | |
405 | |
406 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed | |
407 // that the interpreter before it does any call dispatch will record the current | |
408 // stack pointer in the interpreter frame. On return it will restore the stack | |
409 // pointer as needed. This means the i2c adapter code doesn't need any special | |
410 // handshaking path with compiled code to keep the stack walking correct. | |
411 | |
412 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, | |
413 int total_args_passed, | |
414 int max_arg, | |
415 const BasicType *sig_bt, | |
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416 const VMRegPair *regs, |
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417 AdapterFingerPrint* fingerprint); |
0 | 418 |
419 // OSR support | |
420 | |
421 // OSR_migration_begin will extract the jvm state from an interpreter | |
422 // frame (locals, monitors) and store the data in a piece of C heap | |
423 // storage. This then allows the interpreter frame to be removed from the | |
424 // stack and the OSR nmethod to be called. That method is called with a | |
425 // pointer to the C heap storage. This pointer is the return value from | |
426 // OSR_migration_begin. | |
427 | |
428 static intptr_t* OSR_migration_begin( JavaThread *thread); | |
429 | |
430 // OSR_migration_end is a trivial routine. It is called after the compiled | |
431 // method has extracted the jvm state from the C heap that OSR_migration_begin | |
432 // created. It's entire job is to simply free this storage. | |
433 static void OSR_migration_end ( intptr_t* buf); | |
434 | |
435 // Convert a sig into a calling convention register layout | |
436 // and find interesting things about it. | |
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437 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, int *arg_size); |
0 | 438 static VMReg name_for_receiver(); |
439 | |
440 // "Top of Stack" slots that may be unused by the calling convention but must | |
441 // otherwise be preserved. | |
442 // On Intel these are not necessary and the value can be zero. | |
443 // On Sparc this describes the words reserved for storing a register window | |
444 // when an interrupt occurs. | |
445 static uint out_preserve_stack_slots(); | |
446 | |
447 // Save and restore a native result | |
448 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
449 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); | |
450 | |
451 // Generate a native wrapper for a given method. The method takes arguments | |
452 // in the Java compiled code convention, marshals them to the native | |
453 // convention (handlizes oops, etc), transitions to native, makes the call, | |
454 // returns to java state (possibly blocking), unhandlizes any result and | |
455 // returns. | |
456 static nmethod *generate_native_wrapper(MacroAssembler* masm, | |
457 methodHandle method, | |
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458 int compile_id, |
0 | 459 int total_args_passed, |
460 int max_arg, | |
461 BasicType *sig_bt, | |
462 VMRegPair *regs, | |
463 BasicType ret_type ); | |
464 | |
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465 #ifdef HAVE_DTRACE_H |
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466 // Generate a dtrace wrapper for a given method. The method takes arguments |
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467 // in the Java compiled code convention, marshals them to the native |
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468 // convention (handlizes oops, etc), transitions to native, makes the call, |
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469 // returns to java state (possibly blocking), unhandlizes any result and |
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470 // returns. |
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471 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, |
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472 methodHandle method); |
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473 |
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474 // dtrace support to convert a Java string to utf8 |
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475 static void get_utf(oopDesc* src, address dst); |
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476 #endif // def HAVE_DTRACE_H |
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477 |
0 | 478 // A compiled caller has just called the interpreter, but compiled code |
479 // exists. Patch the caller so he no longer calls into the interpreter. | |
480 static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); | |
481 | |
482 // Slow-path Locking and Unlocking | |
483 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); | |
484 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); | |
485 | |
486 // Resolving of calls | |
487 static address resolve_static_call_C (JavaThread *thread); | |
488 static address resolve_virtual_call_C (JavaThread *thread); | |
489 static address resolve_opt_virtual_call_C(JavaThread *thread); | |
490 | |
491 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) | |
492 static void slow_arraycopy_C(oopDesc* src, jint src_pos, | |
493 oopDesc* dest, jint dest_pos, | |
494 jint length, JavaThread* thread); | |
495 | |
496 // handle ic miss with caller being compiled code | |
497 // wrong method handling (inline cache misses, zombie methods) | |
498 static address handle_wrong_method(JavaThread* thread); | |
499 static address handle_wrong_method_ic_miss(JavaThread* thread); | |
500 | |
501 #ifndef PRODUCT | |
502 | |
503 // Collect and print inline cache miss statistics | |
504 private: | |
505 enum { maxICmiss_count = 100 }; | |
506 static int _ICmiss_index; // length of IC miss histogram | |
507 static int _ICmiss_count[maxICmiss_count]; // miss counts | |
508 static address _ICmiss_at[maxICmiss_count]; // miss addresses | |
509 static void trace_ic_miss(address at); | |
510 | |
511 public: | |
512 static int _monitor_enter_ctr; // monitor enter slow | |
513 static int _monitor_exit_ctr; // monitor exit slow | |
514 static int _throw_null_ctr; // throwing a null-pointer exception | |
515 static int _ic_miss_ctr; // total # of IC misses | |
516 static int _wrong_method_ctr; | |
517 static int _resolve_static_ctr; | |
518 static int _resolve_virtual_ctr; | |
519 static int _resolve_opt_virtual_ctr; | |
520 static int _implicit_null_throws; | |
521 static int _implicit_div0_throws; | |
522 | |
523 static int _jbyte_array_copy_ctr; // Slow-path byte array copy | |
524 static int _jshort_array_copy_ctr; // Slow-path short array copy | |
525 static int _jint_array_copy_ctr; // Slow-path int array copy | |
526 static int _jlong_array_copy_ctr; // Slow-path long array copy | |
527 static int _oop_array_copy_ctr; // Slow-path oop array copy | |
528 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast | |
529 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks | |
530 static int _generic_array_copy_ctr; // Slow-path includes type decoding | |
531 static int _slow_array_copy_ctr; // Slow-path failed out to a method call | |
532 | |
533 static int _new_instance_ctr; // 'new' object requires GC | |
534 static int _new_array_ctr; // 'new' array requires GC | |
535 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; | |
536 static int _find_handler_ctr; // find exception handler | |
537 static int _rethrow_ctr; // rethrow exception | |
538 static int _mon_enter_stub_ctr; // monitor enter stub | |
539 static int _mon_exit_stub_ctr; // monitor exit stub | |
540 static int _mon_enter_ctr; // monitor enter slow | |
541 static int _mon_exit_ctr; // monitor exit slow | |
542 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check | |
543 | |
544 // Statistics code | |
545 // stats for "normal" compiled calls (non-interface) | |
546 static int _nof_normal_calls; // total # of calls | |
547 static int _nof_optimized_calls; // total # of statically-bound calls | |
548 static int _nof_inlined_calls; // total # of inlined normal calls | |
549 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) | |
550 static int _nof_inlined_static_calls; // total # of inlined static calls | |
551 // stats for compiled interface calls | |
552 static int _nof_interface_calls; // total # of compiled calls | |
553 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls | |
554 static int _nof_inlined_interface_calls; // total # of inlined interface calls | |
555 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls | |
556 // stats for runtime exceptions | |
557 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining | |
558 | |
559 public: // for compiler | |
560 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } | |
561 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } | |
562 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } | |
563 static address nof_static_calls_addr() { return (address)&_nof_static_calls; } | |
564 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } | |
565 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } | |
566 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } | |
567 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } | |
568 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } | |
569 static void print_call_statistics(int comp_total); | |
570 static void print_statistics(); | |
571 static void print_ic_miss_histogram(); | |
572 | |
573 #endif // PRODUCT | |
574 }; | |
575 | |
576 | |
577 // --------------------------------------------------------------------------- | |
578 // Implementation of AdapterHandlerLibrary | |
579 // | |
580 // This library manages argument marshaling adapters and native wrappers. | |
581 // There are 2 flavors of adapters: I2C and C2I. | |
582 // | |
1748 | 583 // The I2C flavor takes a stock interpreted call setup, marshals the |
584 // arguments for a Java-compiled call, and jumps to Rmethod-> code()-> | |
585 // code_begin(). It is broken to call it without an nmethod assigned. | |
586 // The usual behavior is to lift any register arguments up out of the | |
587 // stack and possibly re-pack the extra arguments to be contigious. | |
588 // I2C adapters will save what the interpreter's stack pointer will be | |
589 // after arguments are popped, then adjust the interpreter's frame | |
590 // size to force alignment and possibly to repack the arguments. | |
591 // After re-packing, it jumps to the compiled code start. There are | |
592 // no safepoints in this adapter code and a GC cannot happen while | |
593 // marshaling is in progress. | |
0 | 594 // |
595 // The C2I flavor takes a stock compiled call setup plus the target method in | |
596 // Rmethod, marshals the arguments for an interpreted call and jumps to | |
597 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been | |
598 // setup. Compiled frames are fixed-size and the args are likely not in the | |
599 // right place. Hence all the args will likely be copied into the | |
600 // interpreter's frame, forcing that frame to grow. The compiled frame's | |
601 // outgoing stack args will be dead after the copy. | |
602 // | |
603 // Native wrappers, like adapters, marshal arguments. Unlike adapters they | |
604 // also perform an offical frame push & pop. They have a call to the native | |
605 // routine in their middles and end in a return (instead of ending in a jump). | |
606 // The native wrappers are stored in real nmethods instead of the BufferBlobs | |
607 // used by the adapters. The code generation happens here because it's very | |
608 // similar to what the adapters have to do. | |
609 | |
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610 class AdapterHandlerEntry : public BasicHashtableEntry { |
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611 friend class AdapterHandlerTable; |
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612 |
0 | 613 private: |
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614 AdapterFingerPrint* _fingerprint; |
0 | 615 address _i2c_entry; |
616 address _c2i_entry; | |
617 address _c2i_unverified_entry; | |
618 | |
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619 #ifdef ASSERT |
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620 // Captures code and signature used to generate this adapter when |
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621 // verifing adapter equivalence. |
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622 unsigned char* _saved_code; |
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623 int _code_length; |
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624 BasicType* _saved_sig; |
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625 int _total_args_passed; |
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626 #endif |
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627 |
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628 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
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629 _fingerprint = fingerprint; |
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630 _i2c_entry = i2c_entry; |
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631 _c2i_entry = c2i_entry; |
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632 _c2i_unverified_entry = c2i_unverified_entry; |
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633 #ifdef ASSERT |
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634 _saved_code = NULL; |
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635 _code_length = 0; |
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636 _saved_sig = NULL; |
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637 _total_args_passed = 0; |
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638 #endif |
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639 } |
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640 |
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641 void deallocate(); |
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642 |
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643 // should never be used |
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644 AdapterHandlerEntry(); |
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645 |
0 | 646 public: |
647 address get_i2c_entry() { return _i2c_entry; } | |
648 address get_c2i_entry() { return _c2i_entry; } | |
649 address get_c2i_unverified_entry() { return _c2i_unverified_entry; } | |
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650 |
0 | 651 void relocate(address new_base); |
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652 |
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653 AdapterFingerPrint* fingerprint() { return _fingerprint; } |
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654 |
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655 AdapterHandlerEntry* next() { |
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656 return (AdapterHandlerEntry*)BasicHashtableEntry::next(); |
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657 } |
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658 |
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659 #ifdef ASSERT |
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660 // Used to verify that code generated for shared adapters is equivalent |
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661 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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662 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); |
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663 #endif |
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664 |
0 | 665 void print(); |
666 }; | |
667 | |
668 class AdapterHandlerLibrary: public AllStatic { | |
669 private: | |
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670 static BufferBlob* _buffer; // the temporary code buffer in CodeCache |
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671 static AdapterHandlerTable* _adapters; |
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672 static AdapterHandlerEntry* _abstract_method_handler; |
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673 static BufferBlob* buffer_blob(); |
0 | 674 static void initialize(); |
675 | |
676 public: | |
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677 |
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678 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, |
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679 address i2c_entry, address c2i_entry, address c2i_unverified_entry); |
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680 static nmethod* create_native_wrapper(methodHandle method, int compile_id); |
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681 static AdapterHandlerEntry* get_adapter(methodHandle method); |
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682 |
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683 #ifdef HAVE_DTRACE_H |
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684 static nmethod* create_dtrace_nmethod (methodHandle method); |
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685 #endif // HAVE_DTRACE_H |
0 | 686 |
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687 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); } |
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688 static void print_handler_on(outputStream* st, CodeBlob* b); |
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689 static bool contains(CodeBlob* b); |
0 | 690 #ifndef PRODUCT |
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691 static void print_statistics(); |
0 | 692 #endif /* PRODUCT */ |
693 | |
694 }; | |
1972 | 695 |
696 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP |