Mercurial > hg > truffle
annotate src/share/vm/runtime/javaCalls.cpp @ 4993:897b7d18bebc
added RiCompiledMethod.execute and the required VM infrastructure
| author | Lukas Stadler <lukas.stadler@jku.at> |
|---|---|
| date | Tue, 28 Feb 2012 18:00:35 +0100 |
| parents | 1b8d02e10ee8 |
| children | 11ce128f8d28 |
| rev | line source |
|---|---|
| 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 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "code/nmethod.hpp" | |
| 29 #include "compiler/compileBroker.hpp" | |
| 30 #include "interpreter/interpreter.hpp" | |
| 31 #include "interpreter/linkResolver.hpp" | |
| 32 #include "memory/universe.inline.hpp" | |
| 33 #include "oops/oop.inline.hpp" | |
| 34 #include "prims/jniCheck.hpp" | |
| 35 #include "runtime/compilationPolicy.hpp" | |
| 36 #include "runtime/handles.inline.hpp" | |
| 37 #include "runtime/interfaceSupport.hpp" | |
| 38 #include "runtime/javaCalls.hpp" | |
| 39 #include "runtime/mutexLocker.hpp" | |
| 40 #include "runtime/signature.hpp" | |
| 41 #include "runtime/stubRoutines.hpp" | |
| 42 #ifdef TARGET_OS_FAMILY_linux | |
| 43 # include "thread_linux.inline.hpp" | |
| 44 #endif | |
| 45 #ifdef TARGET_OS_FAMILY_solaris | |
| 46 # include "thread_solaris.inline.hpp" | |
| 47 #endif | |
| 48 #ifdef TARGET_OS_FAMILY_windows | |
| 49 # include "thread_windows.inline.hpp" | |
| 50 #endif | |
| 3960 | 51 #ifdef TARGET_OS_FAMILY_bsd |
| 52 # include "thread_bsd.inline.hpp" | |
| 53 #endif | |
| 0 | 54 |
| 55 // ----------------------------------------------------- | |
| 56 // Implementation of JavaCallWrapper | |
| 57 | |
| 58 JavaCallWrapper::JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS) { | |
| 59 JavaThread* thread = (JavaThread *)THREAD; | |
| 60 bool clear_pending_exception = true; | |
| 61 | |
| 62 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code"); | |
| 63 assert(!thread->owns_locks(), "must release all locks when leaving VM"); | |
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64 guarantee(!thread->is_Compiler_thread(), "cannot make java calls from the compiler"); |
| 0 | 65 _result = result; |
| 66 | |
| 67 // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub, | |
| 68 // since it can potentially block. | |
| 69 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
| 70 | |
| 71 // After this, we are official in JavaCode. This needs to be done before we change any of the thread local | |
| 72 // info, since we cannot find oops before the new information is set up completely. | |
| 73 ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_Java); | |
| 74 | |
| 75 // Make sure that we handle asynchronous stops and suspends _before_ we clear all thread state | |
| 76 // in JavaCallWrapper::JavaCallWrapper(). This way, we can decide if we need to do any pd actions | |
| 77 // to prepare for stop/suspend (flush register windows on sparcs, cache sp, or other state). | |
| 78 if (thread->has_special_runtime_exit_condition()) { | |
| 79 thread->handle_special_runtime_exit_condition(); | |
| 80 if (HAS_PENDING_EXCEPTION) { | |
| 81 clear_pending_exception = false; | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 | |
| 86 // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing | |
| 87 // the JavaCallWrapper before the entry frame is on the stack. | |
| 88 _callee_method = callee_method(); | |
| 89 _receiver = receiver(); | |
| 90 | |
| 91 #ifdef CHECK_UNHANDLED_OOPS | |
| 92 THREAD->allow_unhandled_oop(&_callee_method); | |
| 93 THREAD->allow_unhandled_oop(&_receiver); | |
| 94 #endif // CHECK_UNHANDLED_OOPS | |
| 95 | |
| 96 _thread = (JavaThread *)thread; | |
| 97 _handles = _thread->active_handles(); // save previous handle block & Java frame linkage | |
| 98 | |
| 99 // For the profiler, the last_Java_frame information in thread must always be in | |
| 100 // legal state. We have no last Java frame if last_Java_sp == NULL so | |
| 101 // the valid transition is to clear _last_Java_sp and then reset the rest of | |
| 102 // the (platform specific) state. | |
| 103 | |
| 104 _anchor.copy(_thread->frame_anchor()); | |
| 105 _thread->frame_anchor()->clear(); | |
| 106 | |
| 107 debug_only(_thread->inc_java_call_counter()); | |
| 108 _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage | |
| 109 | |
| 110 assert (_thread->thread_state() != _thread_in_native, "cannot set native pc to NULL"); | |
| 111 | |
| 112 // clear any pending exception in thread (native calls start with no exception pending) | |
| 113 if(clear_pending_exception) { | |
| 114 _thread->clear_pending_exception(); | |
| 115 } | |
| 116 | |
| 117 if (_anchor.last_Java_sp() == NULL) { | |
| 118 _thread->record_base_of_stack_pointer(); | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 | |
| 123 JavaCallWrapper::~JavaCallWrapper() { | |
| 124 assert(_thread == JavaThread::current(), "must still be the same thread"); | |
| 125 | |
| 126 // restore previous handle block & Java frame linkage | |
| 127 JNIHandleBlock *_old_handles = _thread->active_handles(); | |
| 128 _thread->set_active_handles(_handles); | |
| 129 | |
| 130 _thread->frame_anchor()->zap(); | |
| 131 | |
| 132 debug_only(_thread->dec_java_call_counter()); | |
| 133 | |
| 134 if (_anchor.last_Java_sp() == NULL) { | |
| 135 _thread->set_base_of_stack_pointer(NULL); | |
| 136 } | |
| 137 | |
| 138 | |
| 139 // Old thread-local info. has been restored. We are not back in the VM. | |
| 140 ThreadStateTransition::transition_from_java(_thread, _thread_in_vm); | |
| 141 | |
| 142 // State has been restored now make the anchor frame visible for the profiler. | |
| 143 // Do this after the transition because this allows us to put an assert | |
| 144 // the Java->vm transition which checks to see that stack is not walkable | |
| 145 // on sparc/ia64 which will catch violations of the reseting of last_Java_frame | |
| 146 // invariants (i.e. _flags always cleared on return to Java) | |
| 147 | |
| 148 _thread->frame_anchor()->copy(&_anchor); | |
| 149 | |
| 150 // Release handles after we are marked as being inside the VM again, since this | |
| 151 // operation might block | |
| 152 JNIHandleBlock::release_block(_old_handles, _thread); | |
| 153 } | |
| 154 | |
| 155 | |
| 156 void JavaCallWrapper::oops_do(OopClosure* f) { | |
| 157 f->do_oop((oop*)&_callee_method); | |
| 158 f->do_oop((oop*)&_receiver); | |
| 159 handles()->oops_do(f); | |
| 160 } | |
| 161 | |
| 162 | |
| 163 // Helper methods | |
| 164 static BasicType runtime_type_from(JavaValue* result) { | |
| 165 switch (result->get_type()) { | |
| 166 case T_BOOLEAN: // fall through | |
| 167 case T_CHAR : // fall through | |
| 168 case T_SHORT : // fall through | |
| 169 case T_INT : // fall through | |
| 170 #ifndef _LP64 | |
| 171 case T_OBJECT : // fall through | |
| 172 case T_ARRAY : // fall through | |
| 173 #endif | |
| 174 case T_BYTE : // fall through | |
| 175 case T_VOID : return T_INT; | |
| 176 case T_LONG : return T_LONG; | |
| 177 case T_FLOAT : return T_FLOAT; | |
| 178 case T_DOUBLE : return T_DOUBLE; | |
| 179 #ifdef _LP64 | |
| 180 case T_ARRAY : // fall through | |
| 181 case T_OBJECT: return T_OBJECT; | |
| 182 #endif | |
| 183 } | |
| 184 ShouldNotReachHere(); | |
| 185 return T_ILLEGAL; | |
| 186 } | |
| 187 | |
| 188 // ===== object constructor calls ===== | |
| 189 | |
| 190 void JavaCalls::call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS) { | |
| 191 assert(method->name() == vmSymbols::object_initializer_name(), "Should only be called for default constructor"); | |
| 192 assert(method->signature() == vmSymbols::void_method_signature(), "Should only be called for default constructor"); | |
| 193 | |
| 194 instanceKlass* ik = instanceKlass::cast(method->method_holder()); | |
| 195 if (ik->is_initialized() && ik->has_vanilla_constructor()) { | |
| 196 // safe to skip constructor call | |
| 197 } else { | |
| 198 static JavaValue result(T_VOID); | |
| 199 JavaCallArguments args(receiver); | |
| 200 call(&result, method, &args, CHECK); | |
| 201 } | |
| 202 } | |
| 203 | |
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204 // ============ Interface calls ============ |
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205 |
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206 void JavaCalls::call_interface(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
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207 CallInfo callinfo; |
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208 Handle receiver = args->receiver(); |
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209 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); |
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210 LinkResolver::resolve_interface_call( |
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211 callinfo, receiver, recvrKlass, spec_klass, name, signature, |
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212 KlassHandle(), false, true, CHECK); |
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213 methodHandle method = callinfo.selected_method(); |
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214 assert(method.not_null(), "should have thrown exception"); |
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215 |
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216 // Invoke the method |
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217 JavaCalls::call(result, method, args, CHECK); |
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218 } |
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219 |
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220 |
| 0 | 221 // ============ Virtual calls ============ |
| 222 | |
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223 void JavaCalls::call_virtual(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
| 0 | 224 CallInfo callinfo; |
| 225 Handle receiver = args->receiver(); | |
| 226 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); | |
| 227 LinkResolver::resolve_virtual_call( | |
| 228 callinfo, receiver, recvrKlass, spec_klass, name, signature, | |
| 229 KlassHandle(), false, true, CHECK); | |
| 230 methodHandle method = callinfo.selected_method(); | |
| 231 assert(method.not_null(), "should have thrown exception"); | |
| 232 | |
| 233 // Invoke the method | |
| 234 JavaCalls::call(result, method, args, CHECK); | |
| 235 } | |
| 236 | |
| 237 | |
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238 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 239 JavaCallArguments args(receiver); // One oop argument |
| 240 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
| 241 } | |
| 242 | |
| 243 | |
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244 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
| 0 | 245 JavaCallArguments args(receiver); // One oop argument |
| 246 args.push_oop(arg1); | |
| 247 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
| 248 } | |
| 249 | |
| 250 | |
| 251 | |
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252 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
| 0 | 253 JavaCallArguments args(receiver); // One oop argument |
| 254 args.push_oop(arg1); | |
| 255 args.push_oop(arg2); | |
| 256 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
| 257 } | |
| 258 | |
| 259 | |
| 260 // ============ Special calls ============ | |
| 261 | |
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262 void JavaCalls::call_special(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
| 0 | 263 CallInfo callinfo; |
| 264 LinkResolver::resolve_special_call(callinfo, klass, name, signature, KlassHandle(), false, CHECK); | |
| 265 methodHandle method = callinfo.selected_method(); | |
| 266 assert(method.not_null(), "should have thrown exception"); | |
| 267 | |
| 268 // Invoke the method | |
| 269 JavaCalls::call(result, method, args, CHECK); | |
| 270 } | |
| 271 | |
| 272 | |
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273 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 274 JavaCallArguments args(receiver); // One oop argument |
| 275 call_special(result, klass, name, signature, &args, CHECK); | |
| 276 } | |
| 277 | |
| 278 | |
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279 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
| 0 | 280 JavaCallArguments args(receiver); // One oop argument |
| 281 args.push_oop(arg1); | |
| 282 call_special(result, klass, name, signature, &args, CHECK); | |
| 283 } | |
| 284 | |
| 285 | |
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286 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
| 0 | 287 JavaCallArguments args(receiver); // One oop argument |
| 288 args.push_oop(arg1); | |
| 289 args.push_oop(arg2); | |
| 290 call_special(result, klass, name, signature, &args, CHECK); | |
| 291 } | |
| 292 | |
| 293 | |
| 294 // ============ Static calls ============ | |
| 295 | |
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296 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
| 0 | 297 CallInfo callinfo; |
| 298 LinkResolver::resolve_static_call(callinfo, klass, name, signature, KlassHandle(), false, true, CHECK); | |
| 299 methodHandle method = callinfo.selected_method(); | |
| 300 assert(method.not_null(), "should have thrown exception"); | |
| 301 | |
| 302 // Invoke the method | |
| 303 JavaCalls::call(result, method, args, CHECK); | |
| 304 } | |
| 305 | |
| 306 | |
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307 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 308 JavaCallArguments args; // No argument |
| 309 call_static(result, klass, name, signature, &args, CHECK); | |
| 310 } | |
| 311 | |
| 312 | |
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313 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
| 0 | 314 JavaCallArguments args(arg1); // One oop argument |
| 315 call_static(result, klass, name, signature, &args, CHECK); | |
| 316 } | |
| 317 | |
| 318 | |
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319 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
| 0 | 320 JavaCallArguments args; // One oop argument |
| 321 args.push_oop(arg1); | |
| 322 args.push_oop(arg2); | |
| 323 call_static(result, klass, name, signature, &args, CHECK); | |
| 324 } | |
| 325 | |
| 326 | |
| 327 // ------------------------------------------------- | |
| 328 // Implementation of JavaCalls (low level) | |
| 329 | |
| 330 | |
| 331 void JavaCalls::call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS) { | |
| 332 // Check if we need to wrap a potential OS exception handler around thread | |
| 333 // This is used for e.g. Win32 structured exception handlers | |
| 334 assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls"); | |
| 335 // Need to wrap each and everytime, since there might be native code down the | |
| 336 // stack that has installed its own exception handlers | |
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337 os::os_exception_wrapper(call_helper, result, &method, NULL, args, THREAD); |
| 0 | 338 } |
| 339 | |
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340 void JavaCalls::call(JavaValue* result, methodHandle method, nmethod* nm, JavaCallArguments* args, TRAPS) { |
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341 // Check if we need to wrap a potential OS exception handler around thread |
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342 // This is used for e.g. Win32 structured exception handlers |
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343 assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls"); |
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344 // Need to wrap each and everytime, since there might be native code down the |
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345 // stack that has installed its own exception handlers |
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346 os::os_exception_wrapper(call_helper, result, &method, nm, args, THREAD); |
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347 } |
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348 |
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349 void JavaCalls::call_helper(JavaValue* result, methodHandle* m, nmethod* nm, JavaCallArguments* args, TRAPS) { |
| 0 | 350 methodHandle method = *m; |
| 351 JavaThread* thread = (JavaThread*)THREAD; | |
| 352 assert(thread->is_Java_thread(), "must be called by a java thread"); | |
| 353 assert(method.not_null(), "must have a method to call"); | |
| 354 assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation"); | |
| 355 assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here"); | |
| 356 | |
| 357 | |
| 358 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
| 359 | |
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360 // Verify the arguments |
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361 |
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362 if (CheckJNICalls) { |
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363 args->verify(method, result->get_type(), thread); |
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364 } |
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365 else debug_only(args->verify(method, result->get_type(), thread)); |
| 0 | 366 |
| 367 // Ignore call if method is empty | |
| 368 if (method->is_empty_method()) { | |
| 369 assert(result->get_type() == T_VOID, "an empty method must return a void value"); | |
| 370 return; | |
| 371 } | |
| 372 | |
| 373 | |
| 374 #ifdef ASSERT | |
| 375 { klassOop holder = method->method_holder(); | |
| 376 // A klass might not be initialized since JavaCall's might be used during the executing of | |
| 377 // the <clinit>. For example, a Thread.start might start executing on an object that is | |
| 378 // not fully initialized! (bad Java programming style) | |
| 379 assert(instanceKlass::cast(holder)->is_linked(), "rewritting must have taken place"); | |
| 380 } | |
| 381 #endif | |
| 382 | |
| 383 | |
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384 assert(!thread->is_Compiler_thread(), "cannot compile from the compiler"); |
| 1783 | 385 if (CompilationPolicy::must_be_compiled(method)) { |
| 0 | 386 CompileBroker::compile_method(method, InvocationEntryBci, |
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387 CompilationPolicy::policy()->initial_compile_level(), |
| 1783 | 388 methodHandle(), 0, "must_be_compiled", CHECK); |
| 0 | 389 } |
| 390 | |
| 391 // Since the call stub sets up like the interpreter we call the from_interpreted_entry | |
| 392 // so we can go compiled via a i2c. Otherwise initial entry method will always | |
| 393 // run interpreted. | |
| 394 address entry_point = method->from_interpreted_entry(); | |
| 395 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) { | |
| 396 entry_point = method->interpreter_entry(); | |
| 397 } | |
| 398 | |
| 399 // Figure out if the result value is an oop or not (Note: This is a different value | |
| 400 // than result_type. result_type will be T_INT of oops. (it is about size) | |
| 401 BasicType result_type = runtime_type_from(result); | |
| 402 bool oop_result_flag = (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY); | |
| 403 | |
| 404 // NOTE: if we move the computation of the result_val_address inside | |
| 405 // the call to call_stub, the optimizer produces wrong code. | |
| 406 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr()); | |
| 407 | |
| 408 // Find receiver | |
| 409 Handle receiver = (!method->is_static()) ? args->receiver() : Handle(); | |
| 410 | |
| 411 // When we reenter Java, we need to reenable the yellow zone which | |
| 412 // might already be disabled when we are in VM. | |
| 413 if (thread->stack_yellow_zone_disabled()) { | |
| 414 thread->reguard_stack(); | |
| 415 } | |
| 416 | |
| 417 // Check that there are shadow pages available before changing thread state | |
| 418 // to Java | |
| 419 if (!os::stack_shadow_pages_available(THREAD, method)) { | |
| 420 // Throw stack overflow exception with preinitialized exception. | |
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421 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method); |
| 0 | 422 return; |
| 423 } else { | |
| 424 // Touch pages checked if the OS needs them to be touched to be mapped. | |
| 425 os::bang_stack_shadow_pages(); | |
| 426 } | |
| 427 | |
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428 if (nm != NULL) { |
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429 #ifdef GRAAL |
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430 if (nm->is_alive()) { |
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431 ((JavaThread*) THREAD)->set_graal_alternate_call_target(nm->entry_point()); |
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432 entry_point = method->adapter()->get_i2c_entry(); |
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433 } else { |
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434 THROW(vmSymbols::MethodInvalidatedException()); |
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435 } |
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436 #else |
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437 ShouldNotReachHere(); |
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438 #endif |
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439 } |
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440 |
| 0 | 441 // do call |
| 442 { JavaCallWrapper link(method, receiver, result, CHECK); | |
| 443 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner | |
| 444 | |
| 445 StubRoutines::call_stub()( | |
| 446 (address)&link, | |
| 447 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem) | |
| 448 result_val_address, // see NOTE above (compiler problem) | |
| 449 result_type, | |
| 450 method(), | |
| 451 entry_point, | |
| 452 args->parameters(), | |
| 453 args->size_of_parameters(), | |
| 454 CHECK | |
| 455 ); | |
| 456 | |
| 457 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call) | |
| 458 // Preserve oop return value across possible gc points | |
| 459 if (oop_result_flag) { | |
| 460 thread->set_vm_result((oop) result->get_jobject()); | |
| 461 } | |
| 462 } | |
| 463 } // Exit JavaCallWrapper (can block - potential return oop must be preserved) | |
| 464 | |
| 465 // Check if a thread stop or suspend should be executed | |
| 466 // The following assert was not realistic. Thread.stop can set that bit at any moment. | |
| 467 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed"); | |
| 468 | |
| 469 // Restore possible oop return | |
| 470 if (oop_result_flag) { | |
| 471 result->set_jobject((jobject)thread->vm_result()); | |
| 472 thread->set_vm_result(NULL); | |
| 473 } | |
| 474 } | |
| 475 | |
| 476 | |
| 477 //-------------------------------------------------------------------------------------- | |
| 478 // Implementation of JavaCallArguments | |
| 479 | |
| 480 intptr_t* JavaCallArguments::parameters() { | |
| 481 // First convert all handles to oops | |
| 482 for(int i = 0; i < _size; i++) { | |
| 483 if (_is_oop[i]) { | |
| 484 // Handle conversion | |
| 485 _value[i] = (intptr_t)Handle::raw_resolve((oop *)_value[i]); | |
| 486 } | |
| 487 } | |
| 488 // Return argument vector | |
| 1506 | 489 return _value; |
| 0 | 490 } |
| 491 | |
| 492 | |
| 493 class SignatureChekker : public SignatureIterator { | |
| 494 private: | |
| 495 bool *_is_oop; | |
| 496 int _pos; | |
| 497 BasicType _return_type; | |
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498 intptr_t* _value; |
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499 Thread* _thread; |
| 0 | 500 |
| 501 public: | |
| 502 bool _is_return; | |
| 503 | |
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504 SignatureChekker(Symbol* signature, BasicType return_type, bool is_static, bool* is_oop, intptr_t* value, Thread* thread) : SignatureIterator(signature) { |
| 0 | 505 _is_oop = is_oop; |
| 506 _is_return = false; | |
| 507 _return_type = return_type; | |
| 508 _pos = 0; | |
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509 _value = value; |
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510 _thread = thread; |
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511 |
| 0 | 512 if (!is_static) { |
| 513 check_value(true); // Receiver must be an oop | |
| 514 } | |
| 515 } | |
| 516 | |
| 517 void check_value(bool type) { | |
| 518 guarantee(_is_oop[_pos++] == type, "signature does not match pushed arguments"); | |
| 519 } | |
| 520 | |
| 521 void check_doing_return(bool state) { _is_return = state; } | |
| 522 | |
| 523 void check_return_type(BasicType t) { | |
| 524 guarantee(_is_return && t == _return_type, "return type does not match"); | |
| 525 } | |
| 526 | |
| 527 void check_int(BasicType t) { | |
| 528 if (_is_return) { | |
| 529 check_return_type(t); | |
| 530 return; | |
| 531 } | |
| 532 check_value(false); | |
| 533 } | |
| 534 | |
| 535 void check_double(BasicType t) { check_long(t); } | |
| 536 | |
| 537 void check_long(BasicType t) { | |
| 538 if (_is_return) { | |
| 539 check_return_type(t); | |
| 540 return; | |
| 541 } | |
| 542 | |
| 543 check_value(false); | |
| 544 check_value(false); | |
| 545 } | |
| 546 | |
| 547 void check_obj(BasicType t) { | |
| 548 if (_is_return) { | |
| 549 check_return_type(t); | |
| 550 return; | |
| 551 } | |
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552 |
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553 // verify handle and the oop pointed to by handle |
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554 int p = _pos; |
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555 bool bad = false; |
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556 // If argument is oop |
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557 if (_is_oop[p]) { |
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558 intptr_t v = _value[p]; |
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559 if (v != 0 ) { |
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560 size_t t = (size_t)v; |
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561 bad = (t < (size_t)os::vm_page_size() ) || !Handle::raw_resolve((oop *)v)->is_oop_or_null(true); |
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562 if (CheckJNICalls && bad) { |
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563 ReportJNIFatalError((JavaThread*)_thread, "Bad JNI oop argument"); |
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564 } |
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565 } |
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566 // for the regular debug case. |
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567 assert(!bad, "Bad JNI oop argument"); |
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568 } |
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569 |
| 0 | 570 check_value(true); |
| 571 } | |
| 572 | |
| 573 void do_bool() { check_int(T_BOOLEAN); } | |
| 574 void do_char() { check_int(T_CHAR); } | |
| 575 void do_float() { check_int(T_FLOAT); } | |
| 576 void do_double() { check_double(T_DOUBLE); } | |
| 577 void do_byte() { check_int(T_BYTE); } | |
| 578 void do_short() { check_int(T_SHORT); } | |
| 579 void do_int() { check_int(T_INT); } | |
| 580 void do_long() { check_long(T_LONG); } | |
| 581 void do_void() { check_return_type(T_VOID); } | |
| 582 void do_object(int begin, int end) { check_obj(T_OBJECT); } | |
| 583 void do_array(int begin, int end) { check_obj(T_OBJECT); } | |
| 584 }; | |
| 585 | |
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586 |
| 0 | 587 void JavaCallArguments::verify(methodHandle method, BasicType return_type, |
| 588 Thread *thread) { | |
| 589 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed"); | |
| 590 | |
| 591 // Treat T_OBJECT and T_ARRAY as the same | |
| 592 if (return_type == T_ARRAY) return_type = T_OBJECT; | |
| 593 | |
| 594 // Check that oop information is correct | |
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595 Symbol* signature = method->signature(); |
| 0 | 596 |
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597 SignatureChekker sc(signature, return_type, method->is_static(),_is_oop, _value, thread); |
| 0 | 598 sc.iterate_parameters(); |
| 599 sc.check_doing_return(true); | |
| 600 sc.iterate_returntype(); | |
| 601 } |