Mercurial > hg > truffle
annotate src/share/vm/utilities/exceptions.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | f03d0a26bf83 |
| children | 66c5dadb4d61 |
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| 0 | 1 /* |
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2 * Copyright (c) 1998, 2007, 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 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_exceptions.cpp.incl" | |
| 27 | |
| 28 | |
| 29 // Implementation of ThreadShadow | |
| 30 void check_ThreadShadow() { | |
| 31 const ByteSize offset1 = byte_offset_of(ThreadShadow, _pending_exception); | |
| 32 const ByteSize offset2 = Thread::pending_exception_offset(); | |
| 33 if (offset1 != offset2) fatal("ThreadShadow::_pending_exception is not positioned correctly"); | |
| 34 } | |
| 35 | |
| 36 | |
| 37 void ThreadShadow::set_pending_exception(oop exception, const char* file, int line) { | |
| 38 assert(exception != NULL && exception->is_oop(), "invalid exception oop"); | |
| 39 _pending_exception = exception; | |
| 40 _exception_file = file; | |
| 41 _exception_line = line; | |
| 42 } | |
| 43 | |
| 44 void ThreadShadow::clear_pending_exception() { | |
| 45 if (TraceClearedExceptions) { | |
| 46 if (_pending_exception != NULL) { | |
| 47 tty->print_cr("Thread::clear_pending_exception: cleared exception:"); | |
| 48 _pending_exception->print(); | |
| 49 } | |
| 50 } | |
| 51 _pending_exception = NULL; | |
| 52 _exception_file = NULL; | |
| 53 _exception_line = 0; | |
| 54 } | |
| 55 // Implementation of Exceptions | |
| 56 | |
| 57 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Handle h_exception) { | |
| 58 // bootstrapping check | |
| 59 if (!Universe::is_fully_initialized()) { | |
| 60 vm_exit_during_initialization(h_exception); | |
| 61 ShouldNotReachHere(); | |
| 62 } | |
| 63 | |
| 64 if (thread->is_VM_thread() | |
| 65 || thread->is_Compiler_thread() ) { | |
| 66 // We do not care what kind of exception we get for the vm-thread or a thread which | |
| 67 // is compiling. We just install a dummy exception object | |
| 68 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
| 69 return true; | |
| 70 } | |
| 71 | |
| 72 return false; | |
| 73 } | |
| 74 | |
| 75 bool Exceptions::special_exception(Thread* thread, const char* file, int line, symbolHandle h_name, const char* message) { | |
| 76 // bootstrapping check | |
| 77 if (!Universe::is_fully_initialized()) { | |
| 78 if (h_name.is_null()) { | |
| 79 // atleast an informative message. | |
| 80 vm_exit_during_initialization("Exception", message); | |
| 81 } else { | |
| 82 vm_exit_during_initialization(h_name, message); | |
| 83 } | |
| 84 ShouldNotReachHere(); | |
| 85 } | |
| 86 | |
| 87 if (thread->is_VM_thread() | |
| 88 || thread->is_Compiler_thread() ) { | |
| 89 // We do not care what kind of exception we get for the vm-thread or a thread which | |
| 90 // is compiling. We just install a dummy exception object | |
| 91 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
| 92 return true; | |
| 93 } | |
| 94 | |
| 95 return false; | |
| 96 } | |
| 97 | |
| 98 // This method should only be called from generated code, | |
| 99 // therefore the exception oop should be in the oopmap. | |
| 100 void Exceptions::_throw_oop(Thread* thread, const char* file, int line, oop exception) { | |
| 101 assert(exception != NULL, "exception should not be NULL"); | |
| 102 Handle h_exception = Handle(thread, exception); | |
| 103 _throw(thread, file, line, h_exception); | |
| 104 } | |
| 105 | |
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106 void Exceptions::_throw(Thread* thread, const char* file, int line, Handle h_exception, const char* message) { |
| 0 | 107 assert(h_exception() != NULL, "exception should not be NULL"); |
| 108 | |
| 109 // tracing (do this up front - so it works during boot strapping) | |
| 110 if (TraceExceptions) { | |
| 111 ttyLocker ttyl; | |
| 112 ResourceMark rm; | |
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113 tty->print_cr("Exception <%s>%s%s (" INTPTR_FORMAT " ) \n" |
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114 "thrown [%s, line %d]\nfor thread " INTPTR_FORMAT, |
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115 h_exception->print_value_string(), |
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116 message ? ": " : "", message ? message : "", |
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117 (address)h_exception(), file, line, thread); |
| 0 | 118 } |
| 119 // for AbortVMOnException flag | |
| 120 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception)); | |
| 121 | |
| 122 // Check for special boot-strapping/vm-thread handling | |
| 123 if (special_exception(thread, file, line, h_exception)) return; | |
| 124 | |
| 1142 | 125 assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable"); |
| 0 | 126 |
| 127 // set the pending exception | |
| 128 thread->set_pending_exception(h_exception(), file, line); | |
| 129 | |
| 130 // vm log | |
| 131 Events::log("throw_exception " INTPTR_FORMAT, (address)h_exception()); | |
| 132 } | |
| 133 | |
| 134 | |
| 135 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, symbolHandle h_name, const char* message, Handle h_loader, Handle h_protection_domain) { | |
| 136 // Check for special boot-strapping/vm-thread handling | |
| 137 if (special_exception(thread, file, line, h_name, message)) return; | |
| 138 // Create and throw exception | |
| 139 Handle h_cause(thread, NULL); | |
| 140 Handle h_exception = new_exception(thread, h_name, message, h_cause, h_loader, h_protection_domain); | |
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141 _throw(thread, file, line, h_exception, message); |
| 0 | 142 } |
| 143 | |
| 144 // Throw an exception with a message and a cause | |
| 145 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, symbolHandle h_name, const char* message, Handle h_cause, Handle h_loader, Handle h_protection_domain) { | |
| 146 // Check for special boot-strapping/vm-thread handling | |
| 147 if (special_exception(thread, file, line, h_name, message)) return; | |
| 148 // Create and throw exception and init cause | |
| 149 Handle h_exception = new_exception(thread, h_name, message, h_cause, h_loader, h_protection_domain); | |
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150 _throw(thread, file, line, h_exception, message); |
| 0 | 151 } |
| 152 | |
| 153 // This version creates handles and calls the other version | |
| 154 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, | |
| 155 symbolOop name, const char* message) { | |
| 156 symbolHandle h_name(thread, name); | |
| 157 Handle h_loader(thread, NULL); | |
| 158 Handle h_protection_domain(thread, NULL); | |
| 159 Exceptions::_throw_msg(thread, file, line, h_name, message, h_loader, h_protection_domain); | |
| 160 } | |
| 161 | |
| 162 // This version already has a handle for name | |
| 163 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, | |
| 164 symbolHandle name, const char* message) { | |
| 165 Handle h_loader(thread, NULL); | |
| 166 Handle h_protection_domain(thread, NULL); | |
| 167 Exceptions::_throw_msg(thread, file, line, name, message, h_loader, h_protection_domain); | |
| 168 } | |
| 169 | |
| 170 // This version already has a handle for name | |
| 171 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, | |
| 172 symbolHandle name, const char* message, Handle cause) { | |
| 173 Handle h_loader(thread, NULL); | |
| 174 Handle h_protection_domain(thread, NULL); | |
| 175 Exceptions::_throw_msg_cause(thread, file, line, name, message, cause, h_loader, h_protection_domain); | |
| 176 } | |
| 177 | |
| 178 void Exceptions::_throw_args(Thread* thread, const char* file, int line, symbolHandle h_name, symbolHandle h_signature, JavaCallArguments *args) { | |
| 179 // Check for special boot-strapping/vm-thread handling | |
| 180 if (special_exception(thread, file, line, h_name, NULL)) return; | |
| 181 // Create and throw exception | |
| 182 Handle h_loader(thread, NULL); | |
| 183 Handle h_prot(thread, NULL); | |
| 184 Handle h_cause(thread, NULL); | |
| 185 Handle exception = new_exception(thread, h_name, h_signature, args, h_cause, h_loader, h_prot); | |
| 186 _throw(thread, file, line, exception); | |
| 187 } | |
| 188 | |
| 189 | |
| 190 void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line) { | |
| 191 Handle exception; | |
| 192 if (!THREAD->has_pending_exception()) { | |
| 193 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
| 194 oop e = instanceKlass::cast(k)->allocate_instance(CHECK); | |
| 195 exception = Handle(THREAD, e); // fill_in_stack trace does gc | |
| 196 if (StackTraceInThrowable) { | |
| 197 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 198 } | |
| 199 } else { | |
| 200 // if prior exception, throw that one instead | |
| 201 exception = Handle(THREAD, THREAD->pending_exception()); | |
| 202 } | |
| 203 _throw_oop(THREAD, file, line, exception()); | |
| 204 } | |
| 205 | |
| 206 void Exceptions::fthrow(Thread* thread, const char* file, int line, symbolHandle h_name, const char* format, ...) { | |
| 207 const int max_msg_size = 1024; | |
| 208 va_list ap; | |
| 209 va_start(ap, format); | |
| 210 char msg[max_msg_size]; | |
| 211 vsnprintf(msg, max_msg_size, format, ap); | |
| 212 msg[max_msg_size-1] = '\0'; | |
| 213 va_end(ap); | |
| 214 _throw_msg(thread, file, line, h_name, msg); | |
| 215 } | |
| 216 | |
| 217 // Creates an exception oop, calls the <init> method with the given signature. | |
| 218 // and returns a Handle | |
| 219 // Initializes the cause if cause non-null | |
| 220 Handle Exceptions::new_exception(Thread *thread, symbolHandle h_name, | |
| 221 symbolHandle signature, | |
| 222 JavaCallArguments *args, | |
| 223 Handle h_cause, Handle h_loader, | |
| 224 Handle h_protection_domain) { | |
| 225 assert(Universe::is_fully_initialized(), | |
| 226 "cannot be called during initialization"); | |
| 227 assert(thread->is_Java_thread(), "can only be called by a Java thread"); | |
| 228 assert(!thread->has_pending_exception(), "already has exception"); | |
| 229 | |
| 230 Handle h_exception; | |
| 231 | |
| 232 // Resolve exception klass | |
| 233 klassOop ik = SystemDictionary::resolve_or_fail(h_name, h_loader, h_protection_domain, true, thread); | |
| 234 instanceKlassHandle klass (thread, ik); | |
| 235 | |
| 236 if (!thread->has_pending_exception()) { | |
| 237 assert(klass.not_null(), "klass must exist"); | |
| 238 // We are about to create an instance - so make sure that klass is initialized | |
| 239 klass->initialize(thread); | |
| 240 if (!thread->has_pending_exception()) { | |
| 241 // Allocate new exception | |
| 242 h_exception = klass->allocate_instance_handle(thread); | |
| 243 if (!thread->has_pending_exception()) { | |
| 244 JavaValue result(T_VOID); | |
| 245 args->set_receiver(h_exception); | |
| 246 // Call constructor | |
| 247 JavaCalls::call_special(&result, klass, | |
| 248 vmSymbolHandles::object_initializer_name(), | |
| 249 signature, | |
| 250 args, | |
| 251 thread); | |
| 252 | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 // Future: object initializer should take a cause argument | |
| 257 if (h_cause() != NULL) { | |
| 1142 | 258 assert(h_cause->is_a(SystemDictionary::Throwable_klass()), |
| 0 | 259 "exception cause is not a subclass of java/lang/Throwable"); |
| 260 JavaValue result1(T_OBJECT); | |
| 261 JavaCallArguments args1; | |
| 262 args1.set_receiver(h_exception); | |
| 263 args1.push_oop(h_cause); | |
| 264 JavaCalls::call_virtual(&result1, klass, | |
| 265 vmSymbolHandles::initCause_name(), | |
| 266 vmSymbolHandles::throwable_throwable_signature(), | |
| 267 &args1, | |
| 268 thread); | |
| 269 } | |
| 270 } | |
| 271 | |
| 272 // Check if another exception was thrown in the process, if so rethrow that one | |
| 273 if (thread->has_pending_exception()) { | |
| 274 h_exception = Handle(thread, thread->pending_exception()); | |
| 275 thread->clear_pending_exception(); | |
| 276 } | |
| 277 return h_exception; | |
| 278 } | |
| 279 | |
| 280 // Convenience method. Calls either the <init>() or <init>(String) method when | |
| 281 // creating a new exception | |
| 282 Handle Exceptions::new_exception(Thread* thread, symbolHandle h_name, | |
| 283 const char* message, Handle h_cause, | |
| 284 Handle h_loader, | |
| 285 Handle h_protection_domain, | |
| 286 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
| 287 JavaCallArguments args; | |
| 288 symbolHandle signature; | |
| 289 if (message == NULL) { | |
| 290 signature = vmSymbolHandles::void_method_signature(); | |
| 291 } else { | |
| 292 // We want to allocate storage, but we can't do that if there's | |
| 293 // a pending exception, so we preserve any pending exception | |
| 294 // around the allocation. | |
| 295 // If we get an exception from the allocation, prefer that to | |
| 296 // the exception we are trying to build, or the pending exception. | |
| 297 // This is sort of like what PRESERVE_EXCEPTION_MARK does, except | |
| 298 // for the preferencing and the early returns. | |
| 299 Handle incoming_exception (thread, NULL); | |
| 300 if (thread->has_pending_exception()) { | |
| 301 incoming_exception = Handle(thread, thread->pending_exception()); | |
| 302 thread->clear_pending_exception(); | |
| 303 } | |
| 304 Handle msg; | |
| 305 if (to_utf8_safe == safe_to_utf8) { | |
| 306 // Make a java UTF8 string. | |
| 307 msg = java_lang_String::create_from_str(message, thread); | |
| 308 } else { | |
| 309 // Make a java string keeping the encoding scheme of the original string. | |
| 310 msg = java_lang_String::create_from_platform_dependent_str(message, thread); | |
| 311 } | |
| 312 if (thread->has_pending_exception()) { | |
| 313 Handle exception(thread, thread->pending_exception()); | |
| 314 thread->clear_pending_exception(); | |
| 315 return exception; | |
| 316 } | |
| 317 if (incoming_exception.not_null()) { | |
| 318 return incoming_exception; | |
| 319 } | |
| 320 args.push_oop(msg); | |
| 321 signature = vmSymbolHandles::string_void_signature(); | |
| 322 } | |
| 323 return new_exception(thread, h_name, signature, &args, h_cause, h_loader, h_protection_domain); | |
| 324 } | |
| 325 | |
| 326 // Another convenience method that creates handles for null class loaders and | |
| 327 // protection domains and null causes. | |
| 328 // If the last parameter 'to_utf8_mode' is safe_to_utf8, | |
| 329 // it means we can safely ignore the encoding scheme of the message string and | |
| 330 // convert it directly to a java UTF8 string. Otherwise, we need to take the | |
| 331 // encoding scheme of the string into account. One thing we should do at some | |
| 332 // point is to push this flag down to class java_lang_String since other | |
| 333 // classes may need similar functionalities. | |
| 334 Handle Exceptions::new_exception(Thread* thread, | |
| 335 symbolOop name, | |
| 336 const char* message, | |
| 337 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
| 338 | |
| 339 symbolHandle h_name(thread, name); | |
| 340 Handle h_loader(thread, NULL); | |
| 341 Handle h_prot(thread, NULL); | |
| 342 Handle h_cause(thread, NULL); | |
| 343 return Exceptions::new_exception(thread, h_name, message, h_cause, h_loader, | |
| 344 h_prot, to_utf8_safe); | |
| 345 } | |
| 346 | |
| 347 // Implementation of ExceptionMark | |
| 348 | |
| 349 ExceptionMark::ExceptionMark(Thread*& thread) { | |
| 350 thread = Thread::current(); | |
| 351 _thread = thread; | |
| 352 if (_thread->has_pending_exception()) { | |
| 353 oop exception = _thread->pending_exception(); | |
| 354 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
| 355 exception->print(); | |
| 356 fatal("ExceptionMark constructor expects no pending exceptions"); | |
| 357 } | |
| 358 } | |
| 359 | |
| 360 | |
| 361 ExceptionMark::~ExceptionMark() { | |
| 362 if (_thread->has_pending_exception()) { | |
| 363 Handle exception(_thread, _thread->pending_exception()); | |
| 364 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
| 365 if (is_init_completed()) { | |
| 366 exception->print(); | |
| 367 fatal("ExceptionMark destructor expects no pending exceptions"); | |
| 368 } else { | |
| 369 vm_exit_during_initialization(exception); | |
| 370 } | |
| 371 } | |
| 372 } | |
| 373 | |
| 374 // ---------------------------------------------------------------------------------------- | |
| 375 | |
| 376 #ifndef PRODUCT | |
| 377 // caller frees value_string if necessary | |
| 378 void Exceptions::debug_check_abort(const char *value_string) { | |
| 379 if (AbortVMOnException != NULL && value_string != NULL && | |
| 380 strstr(value_string, AbortVMOnException)) { | |
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381 fatal(err_msg("Saw %s, aborting", value_string)); |
| 0 | 382 } |
| 383 } | |
| 384 | |
| 385 void Exceptions::debug_check_abort(Handle exception) { | |
| 386 if (AbortVMOnException != NULL) { | |
| 387 ResourceMark rm; | |
| 388 debug_check_abort(instanceKlass::cast(exception()->klass())->external_name()); | |
| 389 } | |
| 390 } | |
| 391 #endif |