Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/exceptions.cpp @ 2426:1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Tue, 05 Apr 2011 14:12:31 -0700 |
| parents | 3582bf76420e |
| children | 0654ee04b214 01147d8aac1d |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1998, 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 "compiler/compileBroker.hpp" | |
| 29 #include "oops/oop.inline.hpp" | |
| 30 #include "runtime/init.hpp" | |
| 31 #include "runtime/java.hpp" | |
| 32 #include "runtime/javaCalls.hpp" | |
| 33 #include "runtime/threadCritical.hpp" | |
| 34 #include "utilities/events.hpp" | |
| 35 #include "utilities/exceptions.hpp" | |
| 36 #ifdef TARGET_OS_FAMILY_linux | |
| 37 # include "thread_linux.inline.hpp" | |
| 38 #endif | |
| 39 #ifdef TARGET_OS_FAMILY_solaris | |
| 40 # include "thread_solaris.inline.hpp" | |
| 41 #endif | |
| 42 #ifdef TARGET_OS_FAMILY_windows | |
| 43 # include "thread_windows.inline.hpp" | |
| 44 #endif | |
| 0 | 45 |
| 46 | |
| 47 // Implementation of ThreadShadow | |
| 48 void check_ThreadShadow() { | |
| 49 const ByteSize offset1 = byte_offset_of(ThreadShadow, _pending_exception); | |
| 50 const ByteSize offset2 = Thread::pending_exception_offset(); | |
| 51 if (offset1 != offset2) fatal("ThreadShadow::_pending_exception is not positioned correctly"); | |
| 52 } | |
| 53 | |
| 54 | |
| 55 void ThreadShadow::set_pending_exception(oop exception, const char* file, int line) { | |
| 56 assert(exception != NULL && exception->is_oop(), "invalid exception oop"); | |
| 57 _pending_exception = exception; | |
| 58 _exception_file = file; | |
| 59 _exception_line = line; | |
| 60 } | |
| 61 | |
| 62 void ThreadShadow::clear_pending_exception() { | |
| 63 if (TraceClearedExceptions) { | |
| 64 if (_pending_exception != NULL) { | |
| 65 tty->print_cr("Thread::clear_pending_exception: cleared exception:"); | |
| 66 _pending_exception->print(); | |
| 67 } | |
| 68 } | |
| 69 _pending_exception = NULL; | |
| 70 _exception_file = NULL; | |
| 71 _exception_line = 0; | |
| 72 } | |
| 73 // Implementation of Exceptions | |
| 74 | |
| 75 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Handle h_exception) { | |
| 76 // bootstrapping check | |
| 77 if (!Universe::is_fully_initialized()) { | |
| 78 vm_exit_during_initialization(h_exception); | |
| 79 ShouldNotReachHere(); | |
| 80 } | |
| 81 | |
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82 #ifdef ASSERT |
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83 // Check for trying to throw stack overflow before initialization is complete |
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84 // to prevent infinite recursion trying to initialize stack overflow without |
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85 // adequate stack space. |
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86 // This can happen with stress testing a large value of StackShadowPages |
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87 if (h_exception()->klass() == SystemDictionary::StackOverflowError_klass()) { |
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88 instanceKlass* ik = instanceKlass::cast(h_exception->klass()); |
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89 assert(ik->is_initialized(), |
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90 "need to increase min_stack_allowed calculation"); |
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91 } |
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92 #endif // ASSERT |
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93 |
| 0 | 94 if (thread->is_VM_thread() |
| 95 || thread->is_Compiler_thread() ) { | |
| 96 // We do not care what kind of exception we get for the vm-thread or a thread which | |
| 97 // is compiling. We just install a dummy exception object | |
| 98 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
| 99 return true; | |
| 100 } | |
| 101 | |
| 102 return false; | |
| 103 } | |
| 104 | |
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105 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Symbol* h_name, const char* message) { |
| 0 | 106 // bootstrapping check |
| 107 if (!Universe::is_fully_initialized()) { | |
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108 if (h_name == NULL) { |
| 0 | 109 // atleast an informative message. |
| 110 vm_exit_during_initialization("Exception", message); | |
| 111 } else { | |
| 112 vm_exit_during_initialization(h_name, message); | |
| 113 } | |
| 114 ShouldNotReachHere(); | |
| 115 } | |
| 116 | |
| 117 if (thread->is_VM_thread() | |
| 118 || thread->is_Compiler_thread() ) { | |
| 119 // We do not care what kind of exception we get for the vm-thread or a thread which | |
| 120 // is compiling. We just install a dummy exception object | |
| 121 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
| 122 return true; | |
| 123 } | |
| 124 return false; | |
| 125 } | |
| 126 | |
| 127 // This method should only be called from generated code, | |
| 128 // therefore the exception oop should be in the oopmap. | |
| 129 void Exceptions::_throw_oop(Thread* thread, const char* file, int line, oop exception) { | |
| 130 assert(exception != NULL, "exception should not be NULL"); | |
| 131 Handle h_exception = Handle(thread, exception); | |
| 132 _throw(thread, file, line, h_exception); | |
| 133 } | |
| 134 | |
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135 void Exceptions::_throw(Thread* thread, const char* file, int line, Handle h_exception, const char* message) { |
| 0 | 136 assert(h_exception() != NULL, "exception should not be NULL"); |
| 137 | |
| 138 // tracing (do this up front - so it works during boot strapping) | |
| 139 if (TraceExceptions) { | |
| 140 ttyLocker ttyl; | |
| 141 ResourceMark rm; | |
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142 tty->print_cr("Exception <%s>%s%s (" INTPTR_FORMAT " ) \n" |
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143 "thrown [%s, line %d]\nfor thread " INTPTR_FORMAT, |
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144 h_exception->print_value_string(), |
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145 message ? ": " : "", message ? message : "", |
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146 (address)h_exception(), file, line, thread); |
| 0 | 147 } |
| 148 // for AbortVMOnException flag | |
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149 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception, message)); |
| 0 | 150 |
| 151 // Check for special boot-strapping/vm-thread handling | |
| 152 if (special_exception(thread, file, line, h_exception)) return; | |
| 153 | |
| 1142 | 154 assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable"); |
| 0 | 155 |
| 156 // set the pending exception | |
| 157 thread->set_pending_exception(h_exception(), file, line); | |
| 158 | |
| 159 // vm log | |
| 160 Events::log("throw_exception " INTPTR_FORMAT, (address)h_exception()); | |
| 161 } | |
| 162 | |
| 163 | |
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164 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* h_name, const char* message, Handle h_loader, Handle h_protection_domain) { |
| 0 | 165 // Check for special boot-strapping/vm-thread handling |
| 166 if (special_exception(thread, file, line, h_name, message)) return; | |
| 167 // Create and throw exception | |
| 168 Handle h_cause(thread, NULL); | |
| 169 Handle h_exception = new_exception(thread, h_name, message, h_cause, h_loader, h_protection_domain); | |
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170 _throw(thread, file, line, h_exception, message); |
| 0 | 171 } |
| 172 | |
| 173 // Throw an exception with a message and a cause | |
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174 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* h_name, const char* message, Handle h_cause, Handle h_loader, Handle h_protection_domain) { |
| 0 | 175 // Check for special boot-strapping/vm-thread handling |
| 176 if (special_exception(thread, file, line, h_name, message)) return; | |
| 177 // Create and throw exception and init cause | |
| 178 Handle h_exception = new_exception(thread, h_name, message, h_cause, h_loader, h_protection_domain); | |
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179 _throw(thread, file, line, h_exception, message); |
| 0 | 180 } |
| 181 | |
| 182 // This version already has a handle for name | |
| 183 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, | |
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184 Symbol* name, const char* message) { |
| 0 | 185 Handle h_loader(thread, NULL); |
| 186 Handle h_protection_domain(thread, NULL); | |
| 187 Exceptions::_throw_msg(thread, file, line, name, message, h_loader, h_protection_domain); | |
| 188 } | |
| 189 | |
| 190 // This version already has a handle for name | |
| 191 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, | |
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192 Symbol* name, const char* message, Handle cause) { |
| 0 | 193 Handle h_loader(thread, NULL); |
| 194 Handle h_protection_domain(thread, NULL); | |
| 195 Exceptions::_throw_msg_cause(thread, file, line, name, message, cause, h_loader, h_protection_domain); | |
| 196 } | |
| 197 | |
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198 void Exceptions::_throw_args(Thread* thread, const char* file, int line, Symbol* h_name, Symbol* h_signature, JavaCallArguments *args) { |
| 0 | 199 // Check for special boot-strapping/vm-thread handling |
| 200 if (special_exception(thread, file, line, h_name, NULL)) return; | |
| 201 // Create and throw exception | |
| 202 Handle h_loader(thread, NULL); | |
| 203 Handle h_prot(thread, NULL); | |
| 204 Handle h_cause(thread, NULL); | |
| 205 Handle exception = new_exception(thread, h_name, h_signature, args, h_cause, h_loader, h_prot); | |
| 206 _throw(thread, file, line, exception); | |
| 207 } | |
| 208 | |
| 209 | |
| 210 void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line) { | |
| 211 Handle exception; | |
| 212 if (!THREAD->has_pending_exception()) { | |
| 213 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
| 214 oop e = instanceKlass::cast(k)->allocate_instance(CHECK); | |
| 215 exception = Handle(THREAD, e); // fill_in_stack trace does gc | |
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216 assert(instanceKlass::cast(k)->is_initialized(), "need to increase min_stack_allowed calculation"); |
| 0 | 217 if (StackTraceInThrowable) { |
| 218 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 219 } | |
| 220 } else { | |
| 221 // if prior exception, throw that one instead | |
| 222 exception = Handle(THREAD, THREAD->pending_exception()); | |
| 223 } | |
| 224 _throw_oop(THREAD, file, line, exception()); | |
| 225 } | |
| 226 | |
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227 void Exceptions::fthrow(Thread* thread, const char* file, int line, Symbol* h_name, const char* format, ...) { |
| 0 | 228 const int max_msg_size = 1024; |
| 229 va_list ap; | |
| 230 va_start(ap, format); | |
| 231 char msg[max_msg_size]; | |
| 232 vsnprintf(msg, max_msg_size, format, ap); | |
| 233 msg[max_msg_size-1] = '\0'; | |
| 234 va_end(ap); | |
| 235 _throw_msg(thread, file, line, h_name, msg); | |
| 236 } | |
| 237 | |
| 238 // Creates an exception oop, calls the <init> method with the given signature. | |
| 239 // and returns a Handle | |
| 240 // Initializes the cause if cause non-null | |
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241 Handle Exceptions::new_exception(Thread *thread, Symbol* h_name, |
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242 Symbol* signature, |
| 0 | 243 JavaCallArguments *args, |
| 244 Handle h_cause, Handle h_loader, | |
| 245 Handle h_protection_domain) { | |
| 246 assert(Universe::is_fully_initialized(), | |
| 247 "cannot be called during initialization"); | |
| 248 assert(thread->is_Java_thread(), "can only be called by a Java thread"); | |
| 249 assert(!thread->has_pending_exception(), "already has exception"); | |
| 250 | |
| 251 Handle h_exception; | |
| 252 | |
| 253 // Resolve exception klass | |
| 254 klassOop ik = SystemDictionary::resolve_or_fail(h_name, h_loader, h_protection_domain, true, thread); | |
| 255 instanceKlassHandle klass (thread, ik); | |
| 256 | |
| 257 if (!thread->has_pending_exception()) { | |
| 258 assert(klass.not_null(), "klass must exist"); | |
| 259 // We are about to create an instance - so make sure that klass is initialized | |
| 260 klass->initialize(thread); | |
| 261 if (!thread->has_pending_exception()) { | |
| 262 // Allocate new exception | |
| 263 h_exception = klass->allocate_instance_handle(thread); | |
| 264 if (!thread->has_pending_exception()) { | |
| 265 JavaValue result(T_VOID); | |
| 266 args->set_receiver(h_exception); | |
| 267 // Call constructor | |
| 268 JavaCalls::call_special(&result, klass, | |
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269 vmSymbols::object_initializer_name(), |
| 0 | 270 signature, |
| 271 args, | |
| 272 thread); | |
| 273 | |
| 274 } | |
| 275 } | |
| 276 | |
| 277 // Future: object initializer should take a cause argument | |
| 278 if (h_cause() != NULL) { | |
| 1142 | 279 assert(h_cause->is_a(SystemDictionary::Throwable_klass()), |
| 0 | 280 "exception cause is not a subclass of java/lang/Throwable"); |
| 281 JavaValue result1(T_OBJECT); | |
| 282 JavaCallArguments args1; | |
| 283 args1.set_receiver(h_exception); | |
| 284 args1.push_oop(h_cause); | |
| 285 JavaCalls::call_virtual(&result1, klass, | |
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286 vmSymbols::initCause_name(), |
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287 vmSymbols::throwable_throwable_signature(), |
| 0 | 288 &args1, |
| 289 thread); | |
| 290 } | |
| 291 } | |
| 292 | |
| 293 // Check if another exception was thrown in the process, if so rethrow that one | |
| 294 if (thread->has_pending_exception()) { | |
| 295 h_exception = Handle(thread, thread->pending_exception()); | |
| 296 thread->clear_pending_exception(); | |
| 297 } | |
| 298 return h_exception; | |
| 299 } | |
| 300 | |
| 301 // Convenience method. Calls either the <init>() or <init>(String) method when | |
| 302 // creating a new exception | |
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303 Handle Exceptions::new_exception(Thread* thread, Symbol* h_name, |
| 0 | 304 const char* message, Handle h_cause, |
| 305 Handle h_loader, | |
| 306 Handle h_protection_domain, | |
| 307 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
| 308 JavaCallArguments args; | |
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309 Symbol* signature = NULL; |
| 0 | 310 if (message == NULL) { |
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311 signature = vmSymbols::void_method_signature(); |
| 0 | 312 } else { |
| 313 // We want to allocate storage, but we can't do that if there's | |
| 314 // a pending exception, so we preserve any pending exception | |
| 315 // around the allocation. | |
| 316 // If we get an exception from the allocation, prefer that to | |
| 317 // the exception we are trying to build, or the pending exception. | |
| 318 // This is sort of like what PRESERVE_EXCEPTION_MARK does, except | |
| 319 // for the preferencing and the early returns. | |
| 320 Handle incoming_exception (thread, NULL); | |
| 321 if (thread->has_pending_exception()) { | |
| 322 incoming_exception = Handle(thread, thread->pending_exception()); | |
| 323 thread->clear_pending_exception(); | |
| 324 } | |
| 325 Handle msg; | |
| 326 if (to_utf8_safe == safe_to_utf8) { | |
| 327 // Make a java UTF8 string. | |
| 328 msg = java_lang_String::create_from_str(message, thread); | |
| 329 } else { | |
| 330 // Make a java string keeping the encoding scheme of the original string. | |
| 331 msg = java_lang_String::create_from_platform_dependent_str(message, thread); | |
| 332 } | |
| 333 if (thread->has_pending_exception()) { | |
| 334 Handle exception(thread, thread->pending_exception()); | |
| 335 thread->clear_pending_exception(); | |
| 336 return exception; | |
| 337 } | |
| 338 if (incoming_exception.not_null()) { | |
| 339 return incoming_exception; | |
| 340 } | |
| 341 args.push_oop(msg); | |
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342 signature = vmSymbols::string_void_signature(); |
| 0 | 343 } |
| 344 return new_exception(thread, h_name, signature, &args, h_cause, h_loader, h_protection_domain); | |
| 345 } | |
| 346 | |
| 347 // Another convenience method that creates handles for null class loaders and | |
| 348 // protection domains and null causes. | |
| 349 // If the last parameter 'to_utf8_mode' is safe_to_utf8, | |
| 350 // it means we can safely ignore the encoding scheme of the message string and | |
| 351 // convert it directly to a java UTF8 string. Otherwise, we need to take the | |
| 352 // encoding scheme of the string into account. One thing we should do at some | |
| 353 // point is to push this flag down to class java_lang_String since other | |
| 354 // classes may need similar functionalities. | |
| 355 Handle Exceptions::new_exception(Thread* thread, | |
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356 Symbol* name, |
| 0 | 357 const char* message, |
| 358 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
| 359 | |
| 360 Handle h_loader(thread, NULL); | |
| 361 Handle h_prot(thread, NULL); | |
| 362 Handle h_cause(thread, NULL); | |
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363 return Exceptions::new_exception(thread, name, message, h_cause, h_loader, |
| 0 | 364 h_prot, to_utf8_safe); |
| 365 } | |
| 366 | |
| 367 // Implementation of ExceptionMark | |
| 368 | |
| 369 ExceptionMark::ExceptionMark(Thread*& thread) { | |
| 370 thread = Thread::current(); | |
| 371 _thread = thread; | |
| 372 if (_thread->has_pending_exception()) { | |
| 373 oop exception = _thread->pending_exception(); | |
| 374 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
| 375 exception->print(); | |
| 376 fatal("ExceptionMark constructor expects no pending exceptions"); | |
| 377 } | |
| 378 } | |
| 379 | |
| 380 | |
| 381 ExceptionMark::~ExceptionMark() { | |
| 382 if (_thread->has_pending_exception()) { | |
| 383 Handle exception(_thread, _thread->pending_exception()); | |
| 384 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
| 385 if (is_init_completed()) { | |
| 386 exception->print(); | |
| 387 fatal("ExceptionMark destructor expects no pending exceptions"); | |
| 388 } else { | |
| 389 vm_exit_during_initialization(exception); | |
| 390 } | |
| 391 } | |
| 392 } | |
| 393 | |
| 394 // ---------------------------------------------------------------------------------------- | |
| 395 | |
| 396 #ifndef PRODUCT | |
| 397 // caller frees value_string if necessary | |
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398 void Exceptions::debug_check_abort(const char *value_string, const char* message) { |
| 0 | 399 if (AbortVMOnException != NULL && value_string != NULL && |
| 400 strstr(value_string, AbortVMOnException)) { | |
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401 if (AbortVMOnExceptionMessage == NULL || message == NULL || |
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402 strcmp(message, AbortVMOnExceptionMessage) == 0) { |
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403 fatal(err_msg("Saw %s, aborting", value_string)); |
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404 } |
| 0 | 405 } |
| 406 } | |
| 407 | |
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408 void Exceptions::debug_check_abort(Handle exception, const char* message) { |
| 0 | 409 if (AbortVMOnException != NULL) { |
| 410 ResourceMark rm; | |
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411 if (message == NULL && exception->is_a(SystemDictionary::Throwable_klass())) { |
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412 oop msg = java_lang_Throwable::message(exception); |
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413 if (msg != NULL) { |
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414 message = java_lang_String::as_utf8_string(msg); |
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415 } |
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416 } |
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417 debug_check_abort(instanceKlass::cast(exception()->klass())->external_name(), message); |
| 0 | 418 } |
| 419 } | |
| 420 #endif |