1 /*
2 * Copyright (c) 1998, 2020, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "logging/log.hpp"
31 #include "logging/logStream.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "memory/universe.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "runtime/handles.inline.hpp"
36 #include "runtime/init.hpp"
37 #include "runtime/java.hpp"
38 #include "runtime/javaCalls.hpp"
39 #include "runtime/os.hpp"
40 #include "runtime/thread.inline.hpp"
41 #include "runtime/threadCritical.hpp"
42 #include "runtime/atomic.hpp"
43 #include "utilities/events.hpp"
44 #include "utilities/exceptions.hpp"
45
46 // Implementation of ThreadShadow
check_ThreadShadow()47 void check_ThreadShadow() {
48 const ByteSize offset1 = byte_offset_of(ThreadShadow, _pending_exception);
49 const ByteSize offset2 = Thread::pending_exception_offset();
50 if (offset1 != offset2) fatal("ThreadShadow::_pending_exception is not positioned correctly");
51 }
52
53
set_pending_exception(oop exception,const char * file,int line)54 void ThreadShadow::set_pending_exception(oop exception, const char* file, int line) {
55 assert(exception != NULL && oopDesc::is_oop(exception), "invalid exception oop");
56 _pending_exception = exception;
57 _exception_file = file;
58 _exception_line = line;
59 }
60
clear_pending_exception()61 void ThreadShadow::clear_pending_exception() {
62 LogTarget(Debug, exceptions) lt;
63 if (_pending_exception != NULL && lt.is_enabled()) {
64 ResourceMark rm;
65 LogStream ls(lt);
66 ls.print("Thread::clear_pending_exception: cleared exception:");
67 _pending_exception->print_on(&ls);
68 }
69 _pending_exception = NULL;
70 _exception_file = NULL;
71 _exception_line = 0;
72 }
73
clear_pending_nonasync_exception()74 void ThreadShadow::clear_pending_nonasync_exception() {
75 // Do not clear probable async exceptions.
76 if (!_pending_exception->is_a(SystemDictionary::ThreadDeath_klass()) &&
77 (_pending_exception->klass() != SystemDictionary::InternalError_klass() ||
78 java_lang_InternalError::during_unsafe_access(_pending_exception) != JNI_TRUE)) {
79 clear_pending_exception();
80 }
81 }
82
83 // Implementation of Exceptions
84
special_exception(Thread * thread,const char * file,int line,Handle h_exception)85 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Handle h_exception) {
86 // bootstrapping check
87 if (!Universe::is_fully_initialized()) {
88 vm_exit_during_initialization(h_exception);
89 ShouldNotReachHere();
90 }
91
92 #ifdef ASSERT
93 // Check for trying to throw stack overflow before initialization is complete
94 // to prevent infinite recursion trying to initialize stack overflow without
95 // adequate stack space.
96 // This can happen with stress testing a large value of StackShadowPages
97 if (h_exception()->klass() == SystemDictionary::StackOverflowError_klass()) {
98 InstanceKlass* ik = InstanceKlass::cast(h_exception->klass());
99 assert(ik->is_initialized(),
100 "need to increase java_thread_min_stack_allowed calculation");
101 }
102 #endif // ASSERT
103
104 if (thread->is_VM_thread()
105 || !thread->can_call_java()) {
106 // We do not care what kind of exception we get for the vm-thread or a thread which
107 // is compiling. We just install a dummy exception object
108 thread->set_pending_exception(Universe::vm_exception(), file, line);
109 return true;
110 }
111
112 return false;
113 }
114
special_exception(Thread * thread,const char * file,int line,Symbol * h_name,const char * message)115 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Symbol* h_name, const char* message) {
116 // bootstrapping check
117 if (!Universe::is_fully_initialized()) {
118 if (h_name == NULL) {
119 // atleast an informative message.
120 vm_exit_during_initialization("Exception", message);
121 } else {
122 vm_exit_during_initialization(h_name, message);
123 }
124 ShouldNotReachHere();
125 }
126
127 if (thread->is_VM_thread()
128 || !thread->can_call_java()) {
129 // We do not care what kind of exception we get for the vm-thread or a thread which
130 // is compiling. We just install a dummy exception object
131 thread->set_pending_exception(Universe::vm_exception(), file, line);
132 return true;
133 }
134 return false;
135 }
136
137 // This method should only be called from generated code,
138 // therefore the exception oop should be in the oopmap.
_throw_oop(Thread * thread,const char * file,int line,oop exception)139 void Exceptions::_throw_oop(Thread* thread, const char* file, int line, oop exception) {
140 assert(exception != NULL, "exception should not be NULL");
141 Handle h_exception(thread, exception);
142 _throw(thread, file, line, h_exception);
143 }
144
_throw(Thread * thread,const char * file,int line,Handle h_exception,const char * message)145 void Exceptions::_throw(Thread* thread, const char* file, int line, Handle h_exception, const char* message) {
146 ResourceMark rm(thread);
147 assert(h_exception() != NULL, "exception should not be NULL");
148
149 // tracing (do this up front - so it works during boot strapping)
150 // Note, the print_value_string() argument is not called unless logging is enabled!
151 log_info(exceptions)("Exception <%s%s%s> (" INTPTR_FORMAT ") \n"
152 "thrown [%s, line %d]\nfor thread " INTPTR_FORMAT,
153 h_exception->print_value_string(),
154 message ? ": " : "", message ? message : "",
155 p2i(h_exception()), file, line, p2i(thread));
156
157 // for AbortVMOnException flag
158 Exceptions::debug_check_abort(h_exception, message);
159
160 // Check for special boot-strapping/vm-thread handling
161 if (special_exception(thread, file, line, h_exception)) {
162 return;
163 }
164
165 if (h_exception->is_a(SystemDictionary::OutOfMemoryError_klass())) {
166 count_out_of_memory_exceptions(h_exception);
167 }
168
169 if (h_exception->is_a(SystemDictionary::LinkageError_klass())) {
170 Atomic::inc(&_linkage_errors);
171 }
172
173 assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable");
174
175 // set the pending exception
176 thread->set_pending_exception(h_exception(), file, line);
177
178 // vm log
179 Events::log_exception(thread, h_exception, message, file, line);
180 }
181
182
_throw_msg(Thread * thread,const char * file,int line,Symbol * name,const char * message,Handle h_loader,Handle h_protection_domain)183 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message,
184 Handle h_loader, Handle h_protection_domain) {
185 // Check for special boot-strapping/vm-thread handling
186 if (special_exception(thread, file, line, name, message)) return;
187 // Create and throw exception
188 Handle h_cause(thread, NULL);
189 Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain);
190 _throw(thread, file, line, h_exception, message);
191 }
192
_throw_msg_cause(Thread * thread,const char * file,int line,Symbol * name,const char * message,Handle h_cause,Handle h_loader,Handle h_protection_domain)193 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause,
194 Handle h_loader, Handle h_protection_domain) {
195 // Check for special boot-strapping/vm-thread handling
196 if (special_exception(thread, file, line, name, message)) return;
197 // Create and throw exception and init cause
198 Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain);
199 _throw(thread, file, line, h_exception, message);
200 }
201
_throw_cause(Thread * thread,const char * file,int line,Symbol * name,Handle h_cause,Handle h_loader,Handle h_protection_domain)202 void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause,
203 Handle h_loader, Handle h_protection_domain) {
204 // Check for special boot-strapping/vm-thread handling
205 if (special_exception(thread, file, line, h_cause)) return;
206 // Create and throw exception
207 Handle h_exception = new_exception(thread, name, h_cause, h_loader, h_protection_domain);
208 _throw(thread, file, line, h_exception, NULL);
209 }
210
_throw_args(Thread * thread,const char * file,int line,Symbol * name,Symbol * signature,JavaCallArguments * args)211 void Exceptions::_throw_args(Thread* thread, const char* file, int line, Symbol* name, Symbol* signature, JavaCallArguments *args) {
212 // Check for special boot-strapping/vm-thread handling
213 if (special_exception(thread, file, line, name, NULL)) return;
214 // Create and throw exception
215 Handle h_loader(thread, NULL);
216 Handle h_prot(thread, NULL);
217 Handle exception = new_exception(thread, name, signature, args, h_loader, h_prot);
218 _throw(thread, file, line, exception);
219 }
220
221
222 // Methods for default parameters.
223 // NOTE: These must be here (and not in the header file) because of include circularities.
_throw_msg_cause(Thread * thread,const char * file,int line,Symbol * name,const char * message,Handle h_cause)224 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause) {
225 _throw_msg_cause(thread, file, line, name, message, h_cause, Handle(thread, NULL), Handle(thread, NULL));
226 }
_throw_msg(Thread * thread,const char * file,int line,Symbol * name,const char * message)227 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message) {
228 _throw_msg(thread, file, line, name, message, Handle(thread, NULL), Handle(thread, NULL));
229 }
_throw_cause(Thread * thread,const char * file,int line,Symbol * name,Handle h_cause)230 void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause) {
231 _throw_cause(thread, file, line, name, h_cause, Handle(thread, NULL), Handle(thread, NULL));
232 }
233
234
throw_stack_overflow_exception(Thread * THREAD,const char * file,int line,const methodHandle & method)235 void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line, const methodHandle& method) {
236 Handle exception;
237 if (!THREAD->has_pending_exception()) {
238 InstanceKlass* k = SystemDictionary::StackOverflowError_klass();
239 oop e = k->allocate_instance(CHECK);
240 exception = Handle(THREAD, e); // fill_in_stack trace does gc
241 assert(k->is_initialized(), "need to increase java_thread_min_stack_allowed calculation");
242 if (StackTraceInThrowable) {
243 java_lang_Throwable::fill_in_stack_trace(exception, method);
244 }
245 // Increment counter for hs_err file reporting
246 Atomic::inc(&Exceptions::_stack_overflow_errors);
247 } else {
248 // if prior exception, throw that one instead
249 exception = Handle(THREAD, THREAD->pending_exception());
250 }
251 _throw(THREAD, file, line, exception);
252 }
253
throw_unsafe_access_internal_error(Thread * thread,const char * file,int line,const char * message)254 void Exceptions::throw_unsafe_access_internal_error(Thread* thread, const char* file, int line, const char* message) {
255 Handle h_exception = new_exception(thread, vmSymbols::java_lang_InternalError(), message);
256 java_lang_InternalError::set_during_unsafe_access(h_exception());
257 _throw(thread, file, line, h_exception, message);
258 }
259
fthrow(Thread * thread,const char * file,int line,Symbol * h_name,const char * format,...)260 void Exceptions::fthrow(Thread* thread, const char* file, int line, Symbol* h_name, const char* format, ...) {
261 const int max_msg_size = 1024;
262 va_list ap;
263 va_start(ap, format);
264 char msg[max_msg_size];
265 os::vsnprintf(msg, max_msg_size, format, ap);
266 va_end(ap);
267 _throw_msg(thread, file, line, h_name, msg);
268 }
269
270
271 // Creates an exception oop, calls the <init> method with the given signature.
272 // and returns a Handle
new_exception(Thread * thread,Symbol * name,Symbol * signature,JavaCallArguments * args,Handle h_loader,Handle h_protection_domain)273 Handle Exceptions::new_exception(Thread *thread, Symbol* name,
274 Symbol* signature, JavaCallArguments *args,
275 Handle h_loader, Handle h_protection_domain) {
276 assert(Universe::is_fully_initialized(),
277 "cannot be called during initialization");
278 assert(thread->is_Java_thread(), "can only be called by a Java thread");
279 assert(!thread->has_pending_exception(), "already has exception");
280
281 Handle h_exception;
282
283 // Resolve exception klass, and check for pending exception below.
284 Klass* klass = SystemDictionary::resolve_or_fail(name, h_loader, h_protection_domain, true, thread);
285
286 if (!thread->has_pending_exception()) {
287 assert(klass != NULL, "klass must exist");
288 h_exception = JavaCalls::construct_new_instance(InstanceKlass::cast(klass),
289 signature,
290 args,
291 thread);
292 }
293
294 // Check if another exception was thrown in the process, if so rethrow that one
295 if (thread->has_pending_exception()) {
296 h_exception = Handle(thread, thread->pending_exception());
297 thread->clear_pending_exception();
298 }
299 return h_exception;
300 }
301
302 // Creates an exception oop, calls the <init> method with the given signature.
303 // and returns a Handle
304 // Initializes the cause if cause non-null
new_exception(Thread * thread,Symbol * name,Symbol * signature,JavaCallArguments * args,Handle h_cause,Handle h_loader,Handle h_protection_domain)305 Handle Exceptions::new_exception(Thread *thread, Symbol* name,
306 Symbol* signature, JavaCallArguments *args,
307 Handle h_cause,
308 Handle h_loader, Handle h_protection_domain) {
309 Handle h_exception = new_exception(thread, name, signature, args, h_loader, h_protection_domain);
310
311 // Future: object initializer should take a cause argument
312 if (h_cause.not_null()) {
313 assert(h_cause->is_a(SystemDictionary::Throwable_klass()),
314 "exception cause is not a subclass of java/lang/Throwable");
315 JavaValue result1(T_OBJECT);
316 JavaCallArguments args1;
317 args1.set_receiver(h_exception);
318 args1.push_oop(h_cause);
319 JavaCalls::call_virtual(&result1, h_exception->klass(),
320 vmSymbols::initCause_name(),
321 vmSymbols::throwable_throwable_signature(),
322 &args1,
323 thread);
324 }
325
326 // Check if another exception was thrown in the process, if so rethrow that one
327 if (thread->has_pending_exception()) {
328 h_exception = Handle(thread, thread->pending_exception());
329 thread->clear_pending_exception();
330 }
331 return h_exception;
332 }
333
334 // Convenience method. Calls either the <init>() or <init>(Throwable) method when
335 // creating a new exception
new_exception(Thread * thread,Symbol * name,Handle h_cause,Handle h_loader,Handle h_protection_domain,ExceptionMsgToUtf8Mode to_utf8_safe)336 Handle Exceptions::new_exception(Thread* thread, Symbol* name,
337 Handle h_cause,
338 Handle h_loader, Handle h_protection_domain,
339 ExceptionMsgToUtf8Mode to_utf8_safe) {
340 JavaCallArguments args;
341 Symbol* signature = NULL;
342 if (h_cause.is_null()) {
343 signature = vmSymbols::void_method_signature();
344 } else {
345 signature = vmSymbols::throwable_void_signature();
346 args.push_oop(h_cause);
347 }
348 return new_exception(thread, name, signature, &args, h_loader, h_protection_domain);
349 }
350
351 // Convenience method. Calls either the <init>() or <init>(String) method when
352 // creating a new exception
new_exception(Thread * thread,Symbol * name,const char * message,Handle h_cause,Handle h_loader,Handle h_protection_domain,ExceptionMsgToUtf8Mode to_utf8_safe)353 Handle Exceptions::new_exception(Thread* thread, Symbol* name,
354 const char* message, Handle h_cause,
355 Handle h_loader, Handle h_protection_domain,
356 ExceptionMsgToUtf8Mode to_utf8_safe) {
357 JavaCallArguments args;
358 Symbol* signature = NULL;
359 if (message == NULL) {
360 signature = vmSymbols::void_method_signature();
361 } else {
362 // We want to allocate storage, but we can't do that if there's
363 // a pending exception, so we preserve any pending exception
364 // around the allocation.
365 // If we get an exception from the allocation, prefer that to
366 // the exception we are trying to build, or the pending exception.
367 // This is sort of like what PRESERVE_EXCEPTION_MARK does, except
368 // for the preferencing and the early returns.
369 Handle incoming_exception(thread, NULL);
370 if (thread->has_pending_exception()) {
371 incoming_exception = Handle(thread, thread->pending_exception());
372 thread->clear_pending_exception();
373 }
374 Handle msg;
375 if (to_utf8_safe == safe_to_utf8) {
376 // Make a java UTF8 string.
377 msg = java_lang_String::create_from_str(message, thread);
378 } else {
379 // Make a java string keeping the encoding scheme of the original string.
380 msg = java_lang_String::create_from_platform_dependent_str(message, thread);
381 }
382 if (thread->has_pending_exception()) {
383 Handle exception(thread, thread->pending_exception());
384 thread->clear_pending_exception();
385 return exception;
386 }
387 if (incoming_exception.not_null()) {
388 return incoming_exception;
389 }
390 args.push_oop(msg);
391 signature = vmSymbols::string_void_signature();
392 }
393 return new_exception(thread, name, signature, &args, h_cause, h_loader, h_protection_domain);
394 }
395
396 // Another convenience method that creates handles for null class loaders and
397 // protection domains and null causes.
398 // If the last parameter 'to_utf8_mode' is safe_to_utf8,
399 // it means we can safely ignore the encoding scheme of the message string and
400 // convert it directly to a java UTF8 string. Otherwise, we need to take the
401 // encoding scheme of the string into account. One thing we should do at some
402 // point is to push this flag down to class java_lang_String since other
403 // classes may need similar functionalities.
new_exception(Thread * thread,Symbol * name,const char * message,ExceptionMsgToUtf8Mode to_utf8_safe)404 Handle Exceptions::new_exception(Thread* thread, Symbol* name,
405 const char* message,
406 ExceptionMsgToUtf8Mode to_utf8_safe) {
407
408 Handle h_loader(thread, NULL);
409 Handle h_prot(thread, NULL);
410 Handle h_cause(thread, NULL);
411 return Exceptions::new_exception(thread, name, message, h_cause, h_loader,
412 h_prot, to_utf8_safe);
413 }
414
415 // invokedynamic uses wrap_dynamic_exception for:
416 // - bootstrap method resolution
417 // - post call to MethodHandleNatives::linkCallSite
418 // dynamically computed constant uses wrap_dynamic_exception for:
419 // - bootstrap method resolution
420 // - post call to MethodHandleNatives::linkDynamicConstant
wrap_dynamic_exception(bool is_indy,Thread * THREAD)421 void Exceptions::wrap_dynamic_exception(bool is_indy, Thread* THREAD) {
422 if (THREAD->has_pending_exception()) {
423 bool log_indy = log_is_enabled(Debug, methodhandles, indy) && is_indy;
424 bool log_condy = log_is_enabled(Debug, methodhandles, condy) && !is_indy;
425 LogStreamHandle(Debug, methodhandles, indy) lsh_indy;
426 LogStreamHandle(Debug, methodhandles, condy) lsh_condy;
427 LogStream* ls = NULL;
428 if (log_indy) {
429 ls = &lsh_indy;
430 } else if (log_condy) {
431 ls = &lsh_condy;
432 }
433 oop exception = THREAD->pending_exception();
434
435 // See the "Linking Exceptions" section for the invokedynamic instruction
436 // in JVMS 6.5.
437 if (exception->is_a(SystemDictionary::Error_klass())) {
438 // Pass through an Error, including BootstrapMethodError, any other form
439 // of linkage error, or say ThreadDeath/OutOfMemoryError
440 if (ls != NULL) {
441 ls->print_cr("bootstrap method invocation wraps BSME around " INTPTR_FORMAT, p2i((void *)exception));
442 exception->print_on(ls);
443 }
444 return;
445 }
446
447 // Otherwise wrap the exception in a BootstrapMethodError
448 if (ls != NULL) {
449 ls->print_cr("%s throws BSME for " INTPTR_FORMAT, is_indy ? "invokedynamic" : "dynamic constant", p2i((void *)exception));
450 exception->print_on(ls);
451 }
452 Handle nested_exception(THREAD, exception);
453 THREAD->clear_pending_exception();
454 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception)
455 }
456 }
457
458 // Exception counting for hs_err file
459 volatile int Exceptions::_stack_overflow_errors = 0;
460 volatile int Exceptions::_linkage_errors = 0;
461 volatile int Exceptions::_out_of_memory_error_java_heap_errors = 0;
462 volatile int Exceptions::_out_of_memory_error_metaspace_errors = 0;
463 volatile int Exceptions::_out_of_memory_error_class_metaspace_errors = 0;
464
count_out_of_memory_exceptions(Handle exception)465 void Exceptions::count_out_of_memory_exceptions(Handle exception) {
466 if (exception() == Universe::out_of_memory_error_metaspace()) {
467 Atomic::inc(&_out_of_memory_error_metaspace_errors);
468 } else if (exception() == Universe::out_of_memory_error_class_metaspace()) {
469 Atomic::inc(&_out_of_memory_error_class_metaspace_errors);
470 } else {
471 // everything else reported as java heap OOM
472 Atomic::inc(&_out_of_memory_error_java_heap_errors);
473 }
474 }
475
print_oom_count(outputStream * st,const char * err,int count)476 void print_oom_count(outputStream* st, const char *err, int count) {
477 if (count > 0) {
478 st->print_cr("OutOfMemoryError %s=%d", err, count);
479 }
480 }
481
has_exception_counts()482 bool Exceptions::has_exception_counts() {
483 return (_stack_overflow_errors + _out_of_memory_error_java_heap_errors +
484 _out_of_memory_error_metaspace_errors + _out_of_memory_error_class_metaspace_errors) > 0;
485 }
486
print_exception_counts_on_error(outputStream * st)487 void Exceptions::print_exception_counts_on_error(outputStream* st) {
488 print_oom_count(st, "java_heap_errors", _out_of_memory_error_java_heap_errors);
489 print_oom_count(st, "metaspace_errors", _out_of_memory_error_metaspace_errors);
490 print_oom_count(st, "class_metaspace_errors", _out_of_memory_error_class_metaspace_errors);
491 if (_stack_overflow_errors > 0) {
492 st->print_cr("StackOverflowErrors=%d", _stack_overflow_errors);
493 }
494 if (_linkage_errors > 0) {
495 st->print_cr("LinkageErrors=%d", _linkage_errors);
496 }
497 }
498
499 // Implementation of ExceptionMark
500
ExceptionMark(Thread * & thread)501 ExceptionMark::ExceptionMark(Thread*& thread) {
502 thread = Thread::current();
503 _thread = thread;
504 if (_thread->has_pending_exception()) {
505 oop exception = _thread->pending_exception();
506 _thread->clear_pending_exception(); // Needed to avoid infinite recursion
507 exception->print();
508 fatal("ExceptionMark constructor expects no pending exceptions");
509 }
510 }
511
512
~ExceptionMark()513 ExceptionMark::~ExceptionMark() {
514 if (_thread->has_pending_exception()) {
515 Handle exception(_thread, _thread->pending_exception());
516 _thread->clear_pending_exception(); // Needed to avoid infinite recursion
517 if (is_init_completed()) {
518 exception->print();
519 fatal("ExceptionMark destructor expects no pending exceptions");
520 } else {
521 vm_exit_during_initialization(exception);
522 }
523 }
524 }
525
526 // ----------------------------------------------------------------------------------------
527
528 // caller frees value_string if necessary
debug_check_abort(const char * value_string,const char * message)529 void Exceptions::debug_check_abort(const char *value_string, const char* message) {
530 if (AbortVMOnException != NULL && value_string != NULL &&
531 strstr(value_string, AbortVMOnException)) {
532 if (AbortVMOnExceptionMessage == NULL || (message != NULL &&
533 strstr(message, AbortVMOnExceptionMessage))) {
534 fatal("Saw %s, aborting", value_string);
535 }
536 }
537 }
538
debug_check_abort(Handle exception,const char * message)539 void Exceptions::debug_check_abort(Handle exception, const char* message) {
540 if (AbortVMOnException != NULL) {
541 debug_check_abort_helper(exception, message);
542 }
543 }
544
debug_check_abort_helper(Handle exception,const char * message)545 void Exceptions::debug_check_abort_helper(Handle exception, const char* message) {
546 ResourceMark rm;
547 if (message == NULL && exception->is_a(SystemDictionary::Throwable_klass())) {
548 oop msg = java_lang_Throwable::message(exception());
549 if (msg != NULL) {
550 message = java_lang_String::as_utf8_string(msg);
551 }
552 }
553 debug_check_abort(exception()->klass()->external_name(), message);
554 }
555
556 // for logging exceptions
log_exception(Handle exception,const char * message)557 void Exceptions::log_exception(Handle exception, const char* message) {
558 ResourceMark rm;
559 Symbol* detail_message = java_lang_Throwable::detail_message(exception());
560 if (detail_message != NULL) {
561 log_info(exceptions)("Exception <%s: %s>\n thrown in %s",
562 exception->print_value_string(),
563 detail_message->as_C_string(),
564 message);
565 } else {
566 log_info(exceptions)("Exception <%s>\n thrown in %s",
567 exception->print_value_string(),
568 message);
569 }
570 }
571