Mercurial > hg > graal-jvmci-8
annotate src/share/vm/utilities/exceptions.cpp @ 1867:b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
Summary: min_stack_allowed is a compile time constant and Stack*Pages are settable
Reviewed-by: dholmes, kvn
author | coleenp |
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date | Thu, 07 Oct 2010 08:06:06 -0700 |
parents | 66c5dadb4d61 |
children | 2d26b0046e0d f95d63e2154a |
rev | line source |
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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 | |
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64 #ifdef ASSERT |
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65 // Check for trying to throw stack overflow before initialization is complete |
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66 // to prevent infinite recursion trying to initialize stack overflow without |
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67 // adequate stack space. |
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68 // This can happen with stress testing a large value of StackShadowPages |
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69 if (h_exception()->klass() == SystemDictionary::StackOverflowError_klass()) { |
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70 instanceKlass* ik = instanceKlass::cast(h_exception->klass()); |
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71 assert(ik->is_initialized(), |
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72 "need to increase min_stack_allowed calculation"); |
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73 } |
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74 #endif // ASSERT |
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75 |
0 | 76 if (thread->is_VM_thread() |
77 || thread->is_Compiler_thread() ) { | |
78 // We do not care what kind of exception we get for the vm-thread or a thread which | |
79 // is compiling. We just install a dummy exception object | |
80 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
81 return true; | |
82 } | |
83 | |
84 return false; | |
85 } | |
86 | |
87 bool Exceptions::special_exception(Thread* thread, const char* file, int line, symbolHandle h_name, const char* message) { | |
88 // bootstrapping check | |
89 if (!Universe::is_fully_initialized()) { | |
90 if (h_name.is_null()) { | |
91 // atleast an informative message. | |
92 vm_exit_during_initialization("Exception", message); | |
93 } else { | |
94 vm_exit_during_initialization(h_name, message); | |
95 } | |
96 ShouldNotReachHere(); | |
97 } | |
98 | |
99 if (thread->is_VM_thread() | |
100 || thread->is_Compiler_thread() ) { | |
101 // We do not care what kind of exception we get for the vm-thread or a thread which | |
102 // is compiling. We just install a dummy exception object | |
103 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
104 return true; | |
105 } | |
106 return false; | |
107 } | |
108 | |
109 // This method should only be called from generated code, | |
110 // therefore the exception oop should be in the oopmap. | |
111 void Exceptions::_throw_oop(Thread* thread, const char* file, int line, oop exception) { | |
112 assert(exception != NULL, "exception should not be NULL"); | |
113 Handle h_exception = Handle(thread, exception); | |
114 _throw(thread, file, line, h_exception); | |
115 } | |
116 | |
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117 void Exceptions::_throw(Thread* thread, const char* file, int line, Handle h_exception, const char* message) { |
0 | 118 assert(h_exception() != NULL, "exception should not be NULL"); |
119 | |
120 // tracing (do this up front - so it works during boot strapping) | |
121 if (TraceExceptions) { | |
122 ttyLocker ttyl; | |
123 ResourceMark rm; | |
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124 tty->print_cr("Exception <%s>%s%s (" INTPTR_FORMAT " ) \n" |
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125 "thrown [%s, line %d]\nfor thread " INTPTR_FORMAT, |
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126 h_exception->print_value_string(), |
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127 message ? ": " : "", message ? message : "", |
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128 (address)h_exception(), file, line, thread); |
0 | 129 } |
130 // for AbortVMOnException flag | |
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131 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception, message)); |
0 | 132 |
133 // Check for special boot-strapping/vm-thread handling | |
134 if (special_exception(thread, file, line, h_exception)) return; | |
135 | |
1142 | 136 assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable"); |
0 | 137 |
138 // set the pending exception | |
139 thread->set_pending_exception(h_exception(), file, line); | |
140 | |
141 // vm log | |
142 Events::log("throw_exception " INTPTR_FORMAT, (address)h_exception()); | |
143 } | |
144 | |
145 | |
146 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, symbolHandle h_name, const char* message, Handle h_loader, Handle h_protection_domain) { | |
147 // Check for special boot-strapping/vm-thread handling | |
148 if (special_exception(thread, file, line, h_name, message)) return; | |
149 // Create and throw exception | |
150 Handle h_cause(thread, NULL); | |
151 Handle h_exception = new_exception(thread, h_name, message, h_cause, h_loader, h_protection_domain); | |
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152 _throw(thread, file, line, h_exception, message); |
0 | 153 } |
154 | |
155 // Throw an exception with a message and a cause | |
156 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) { | |
157 // Check for special boot-strapping/vm-thread handling | |
158 if (special_exception(thread, file, line, h_name, message)) return; | |
159 // Create and throw exception and init cause | |
160 Handle h_exception = new_exception(thread, h_name, message, h_cause, h_loader, h_protection_domain); | |
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161 _throw(thread, file, line, h_exception, message); |
0 | 162 } |
163 | |
164 // This version creates handles and calls the other version | |
165 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, | |
166 symbolOop name, const char* message) { | |
167 symbolHandle h_name(thread, name); | |
168 Handle h_loader(thread, NULL); | |
169 Handle h_protection_domain(thread, NULL); | |
170 Exceptions::_throw_msg(thread, file, line, h_name, message, h_loader, h_protection_domain); | |
171 } | |
172 | |
173 // This version already has a handle for name | |
174 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, | |
175 symbolHandle name, const char* message) { | |
176 Handle h_loader(thread, NULL); | |
177 Handle h_protection_domain(thread, NULL); | |
178 Exceptions::_throw_msg(thread, file, line, name, message, h_loader, h_protection_domain); | |
179 } | |
180 | |
181 // This version already has a handle for name | |
182 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, | |
183 symbolHandle name, const char* message, Handle cause) { | |
184 Handle h_loader(thread, NULL); | |
185 Handle h_protection_domain(thread, NULL); | |
186 Exceptions::_throw_msg_cause(thread, file, line, name, message, cause, h_loader, h_protection_domain); | |
187 } | |
188 | |
189 void Exceptions::_throw_args(Thread* thread, const char* file, int line, symbolHandle h_name, symbolHandle h_signature, JavaCallArguments *args) { | |
190 // Check for special boot-strapping/vm-thread handling | |
191 if (special_exception(thread, file, line, h_name, NULL)) return; | |
192 // Create and throw exception | |
193 Handle h_loader(thread, NULL); | |
194 Handle h_prot(thread, NULL); | |
195 Handle h_cause(thread, NULL); | |
196 Handle exception = new_exception(thread, h_name, h_signature, args, h_cause, h_loader, h_prot); | |
197 _throw(thread, file, line, exception); | |
198 } | |
199 | |
200 | |
201 void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line) { | |
202 Handle exception; | |
203 if (!THREAD->has_pending_exception()) { | |
204 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
205 oop e = instanceKlass::cast(k)->allocate_instance(CHECK); | |
206 exception = Handle(THREAD, e); // fill_in_stack trace does gc | |
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207 assert(instanceKlass::cast(k)->is_initialized(), "need to increase min_stack_allowed calculation"); |
0 | 208 if (StackTraceInThrowable) { |
209 java_lang_Throwable::fill_in_stack_trace(exception); | |
210 } | |
211 } else { | |
212 // if prior exception, throw that one instead | |
213 exception = Handle(THREAD, THREAD->pending_exception()); | |
214 } | |
215 _throw_oop(THREAD, file, line, exception()); | |
216 } | |
217 | |
218 void Exceptions::fthrow(Thread* thread, const char* file, int line, symbolHandle h_name, const char* format, ...) { | |
219 const int max_msg_size = 1024; | |
220 va_list ap; | |
221 va_start(ap, format); | |
222 char msg[max_msg_size]; | |
223 vsnprintf(msg, max_msg_size, format, ap); | |
224 msg[max_msg_size-1] = '\0'; | |
225 va_end(ap); | |
226 _throw_msg(thread, file, line, h_name, msg); | |
227 } | |
228 | |
229 // Creates an exception oop, calls the <init> method with the given signature. | |
230 // and returns a Handle | |
231 // Initializes the cause if cause non-null | |
232 Handle Exceptions::new_exception(Thread *thread, symbolHandle h_name, | |
233 symbolHandle signature, | |
234 JavaCallArguments *args, | |
235 Handle h_cause, Handle h_loader, | |
236 Handle h_protection_domain) { | |
237 assert(Universe::is_fully_initialized(), | |
238 "cannot be called during initialization"); | |
239 assert(thread->is_Java_thread(), "can only be called by a Java thread"); | |
240 assert(!thread->has_pending_exception(), "already has exception"); | |
241 | |
242 Handle h_exception; | |
243 | |
244 // Resolve exception klass | |
245 klassOop ik = SystemDictionary::resolve_or_fail(h_name, h_loader, h_protection_domain, true, thread); | |
246 instanceKlassHandle klass (thread, ik); | |
247 | |
248 if (!thread->has_pending_exception()) { | |
249 assert(klass.not_null(), "klass must exist"); | |
250 // We are about to create an instance - so make sure that klass is initialized | |
251 klass->initialize(thread); | |
252 if (!thread->has_pending_exception()) { | |
253 // Allocate new exception | |
254 h_exception = klass->allocate_instance_handle(thread); | |
255 if (!thread->has_pending_exception()) { | |
256 JavaValue result(T_VOID); | |
257 args->set_receiver(h_exception); | |
258 // Call constructor | |
259 JavaCalls::call_special(&result, klass, | |
260 vmSymbolHandles::object_initializer_name(), | |
261 signature, | |
262 args, | |
263 thread); | |
264 | |
265 } | |
266 } | |
267 | |
268 // Future: object initializer should take a cause argument | |
269 if (h_cause() != NULL) { | |
1142 | 270 assert(h_cause->is_a(SystemDictionary::Throwable_klass()), |
0 | 271 "exception cause is not a subclass of java/lang/Throwable"); |
272 JavaValue result1(T_OBJECT); | |
273 JavaCallArguments args1; | |
274 args1.set_receiver(h_exception); | |
275 args1.push_oop(h_cause); | |
276 JavaCalls::call_virtual(&result1, klass, | |
277 vmSymbolHandles::initCause_name(), | |
278 vmSymbolHandles::throwable_throwable_signature(), | |
279 &args1, | |
280 thread); | |
281 } | |
282 } | |
283 | |
284 // Check if another exception was thrown in the process, if so rethrow that one | |
285 if (thread->has_pending_exception()) { | |
286 h_exception = Handle(thread, thread->pending_exception()); | |
287 thread->clear_pending_exception(); | |
288 } | |
289 return h_exception; | |
290 } | |
291 | |
292 // Convenience method. Calls either the <init>() or <init>(String) method when | |
293 // creating a new exception | |
294 Handle Exceptions::new_exception(Thread* thread, symbolHandle h_name, | |
295 const char* message, Handle h_cause, | |
296 Handle h_loader, | |
297 Handle h_protection_domain, | |
298 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
299 JavaCallArguments args; | |
300 symbolHandle signature; | |
301 if (message == NULL) { | |
302 signature = vmSymbolHandles::void_method_signature(); | |
303 } else { | |
304 // We want to allocate storage, but we can't do that if there's | |
305 // a pending exception, so we preserve any pending exception | |
306 // around the allocation. | |
307 // If we get an exception from the allocation, prefer that to | |
308 // the exception we are trying to build, or the pending exception. | |
309 // This is sort of like what PRESERVE_EXCEPTION_MARK does, except | |
310 // for the preferencing and the early returns. | |
311 Handle incoming_exception (thread, NULL); | |
312 if (thread->has_pending_exception()) { | |
313 incoming_exception = Handle(thread, thread->pending_exception()); | |
314 thread->clear_pending_exception(); | |
315 } | |
316 Handle msg; | |
317 if (to_utf8_safe == safe_to_utf8) { | |
318 // Make a java UTF8 string. | |
319 msg = java_lang_String::create_from_str(message, thread); | |
320 } else { | |
321 // Make a java string keeping the encoding scheme of the original string. | |
322 msg = java_lang_String::create_from_platform_dependent_str(message, thread); | |
323 } | |
324 if (thread->has_pending_exception()) { | |
325 Handle exception(thread, thread->pending_exception()); | |
326 thread->clear_pending_exception(); | |
327 return exception; | |
328 } | |
329 if (incoming_exception.not_null()) { | |
330 return incoming_exception; | |
331 } | |
332 args.push_oop(msg); | |
333 signature = vmSymbolHandles::string_void_signature(); | |
334 } | |
335 return new_exception(thread, h_name, signature, &args, h_cause, h_loader, h_protection_domain); | |
336 } | |
337 | |
338 // Another convenience method that creates handles for null class loaders and | |
339 // protection domains and null causes. | |
340 // If the last parameter 'to_utf8_mode' is safe_to_utf8, | |
341 // it means we can safely ignore the encoding scheme of the message string and | |
342 // convert it directly to a java UTF8 string. Otherwise, we need to take the | |
343 // encoding scheme of the string into account. One thing we should do at some | |
344 // point is to push this flag down to class java_lang_String since other | |
345 // classes may need similar functionalities. | |
346 Handle Exceptions::new_exception(Thread* thread, | |
347 symbolOop name, | |
348 const char* message, | |
349 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
350 | |
351 symbolHandle h_name(thread, name); | |
352 Handle h_loader(thread, NULL); | |
353 Handle h_prot(thread, NULL); | |
354 Handle h_cause(thread, NULL); | |
355 return Exceptions::new_exception(thread, h_name, message, h_cause, h_loader, | |
356 h_prot, to_utf8_safe); | |
357 } | |
358 | |
359 // Implementation of ExceptionMark | |
360 | |
361 ExceptionMark::ExceptionMark(Thread*& thread) { | |
362 thread = Thread::current(); | |
363 _thread = thread; | |
364 if (_thread->has_pending_exception()) { | |
365 oop exception = _thread->pending_exception(); | |
366 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
367 exception->print(); | |
368 fatal("ExceptionMark constructor expects no pending exceptions"); | |
369 } | |
370 } | |
371 | |
372 | |
373 ExceptionMark::~ExceptionMark() { | |
374 if (_thread->has_pending_exception()) { | |
375 Handle exception(_thread, _thread->pending_exception()); | |
376 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
377 if (is_init_completed()) { | |
378 exception->print(); | |
379 fatal("ExceptionMark destructor expects no pending exceptions"); | |
380 } else { | |
381 vm_exit_during_initialization(exception); | |
382 } | |
383 } | |
384 } | |
385 | |
386 // ---------------------------------------------------------------------------------------- | |
387 | |
388 #ifndef PRODUCT | |
389 // caller frees value_string if necessary | |
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390 void Exceptions::debug_check_abort(const char *value_string, const char* message) { |
0 | 391 if (AbortVMOnException != NULL && value_string != NULL && |
392 strstr(value_string, AbortVMOnException)) { | |
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393 if (AbortVMOnExceptionMessage == NULL || message == NULL || |
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394 strcmp(message, AbortVMOnExceptionMessage) == 0) { |
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395 fatal(err_msg("Saw %s, aborting", value_string)); |
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396 } |
0 | 397 } |
398 } | |
399 | |
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400 void Exceptions::debug_check_abort(Handle exception, const char* message) { |
0 | 401 if (AbortVMOnException != NULL) { |
402 ResourceMark rm; | |
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403 if (message == NULL && exception->is_a(SystemDictionary::Throwable_klass())) { |
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404 oop msg = java_lang_Throwable::message(exception); |
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405 if (msg != NULL) { |
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406 message = java_lang_String::as_utf8_string(msg); |
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407 } |
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408 } |
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409 debug_check_abort(instanceKlass::cast(exception()->klass())->external_name(), message); |
0 | 410 } |
411 } | |
412 #endif |