Mercurial > hg > truffle
annotate src/share/vm/utilities/exceptions.cpp @ 19177:1a7b33c96c0d
Fixes for TruffleGraphBuilderPluginsProvider.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 06 Feb 2015 16:49:34 +0100 |
parents | 52b4284cb496 |
children | 7848fc12602b |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2014, 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" | |
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33 #include "runtime/thread.inline.hpp" |
1972 | 34 #include "runtime/threadCritical.hpp" |
35 #include "utilities/events.hpp" | |
36 #include "utilities/exceptions.hpp" | |
0 | 37 |
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38 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
0 | 39 |
40 // Implementation of ThreadShadow | |
41 void check_ThreadShadow() { | |
42 const ByteSize offset1 = byte_offset_of(ThreadShadow, _pending_exception); | |
43 const ByteSize offset2 = Thread::pending_exception_offset(); | |
44 if (offset1 != offset2) fatal("ThreadShadow::_pending_exception is not positioned correctly"); | |
45 } | |
46 | |
47 | |
48 void ThreadShadow::set_pending_exception(oop exception, const char* file, int line) { | |
49 assert(exception != NULL && exception->is_oop(), "invalid exception oop"); | |
50 _pending_exception = exception; | |
51 _exception_file = file; | |
52 _exception_line = line; | |
53 } | |
54 | |
55 void ThreadShadow::clear_pending_exception() { | |
56 if (TraceClearedExceptions) { | |
57 if (_pending_exception != NULL) { | |
58 tty->print_cr("Thread::clear_pending_exception: cleared exception:"); | |
59 _pending_exception->print(); | |
60 } | |
61 } | |
62 _pending_exception = NULL; | |
63 _exception_file = NULL; | |
64 _exception_line = 0; | |
65 } | |
66 // Implementation of Exceptions | |
67 | |
68 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Handle h_exception) { | |
69 // bootstrapping check | |
70 if (!Universe::is_fully_initialized()) { | |
71 vm_exit_during_initialization(h_exception); | |
72 ShouldNotReachHere(); | |
73 } | |
74 | |
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75 #ifdef ASSERT |
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76 // Check for trying to throw stack overflow before initialization is complete |
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77 // to prevent infinite recursion trying to initialize stack overflow without |
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78 // adequate stack space. |
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79 // This can happen with stress testing a large value of StackShadowPages |
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80 if (h_exception()->klass() == SystemDictionary::StackOverflowError_klass()) { |
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81 InstanceKlass* ik = InstanceKlass::cast(h_exception->klass()); |
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82 assert(ik->is_initialized(), |
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83 "need to increase min_stack_allowed calculation"); |
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84 } |
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85 #endif // ASSERT |
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86 |
0 | 87 if (thread->is_VM_thread() |
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88 || !thread->can_call_java() ) { |
0 | 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 | |
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98 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Symbol* h_name, const char* message) { |
0 | 99 // bootstrapping check |
100 if (!Universe::is_fully_initialized()) { | |
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101 if (h_name == NULL) { |
0 | 102 // atleast an informative message. |
103 vm_exit_during_initialization("Exception", message); | |
104 } else { | |
105 vm_exit_during_initialization(h_name, message); | |
106 } | |
107 ShouldNotReachHere(); | |
108 } | |
109 | |
110 if (thread->is_VM_thread() | |
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111 || !thread->can_call_java() ) { |
0 | 112 // We do not care what kind of exception we get for the vm-thread or a thread which |
113 // is compiling. We just install a dummy exception object | |
114 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
115 return true; | |
116 } | |
117 return false; | |
118 } | |
119 | |
120 // This method should only be called from generated code, | |
121 // therefore the exception oop should be in the oopmap. | |
122 void Exceptions::_throw_oop(Thread* thread, const char* file, int line, oop exception) { | |
123 assert(exception != NULL, "exception should not be NULL"); | |
124 Handle h_exception = Handle(thread, exception); | |
125 _throw(thread, file, line, h_exception); | |
126 } | |
127 | |
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128 void Exceptions::_throw(Thread* thread, const char* file, int line, Handle h_exception, const char* message) { |
12002 | 129 ResourceMark rm; |
0 | 130 assert(h_exception() != NULL, "exception should not be NULL"); |
131 | |
132 // tracing (do this up front - so it works during boot strapping) | |
133 if (TraceExceptions) { | |
134 ttyLocker ttyl; | |
12002 | 135 tty->print_cr("Exception <%s%s%s> (" INTPTR_FORMAT ") \n" |
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136 "thrown [%s, line %d]\nfor thread " INTPTR_FORMAT, |
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137 h_exception->print_value_string(), |
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138 message ? ": " : "", message ? message : "", |
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139 (address)h_exception(), file, line, thread); |
0 | 140 } |
141 // for AbortVMOnException flag | |
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142 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception, message)); |
0 | 143 |
144 // Check for special boot-strapping/vm-thread handling | |
12002 | 145 if (special_exception(thread, file, line, h_exception)) { |
146 return; | |
147 } | |
0 | 148 |
1142 | 149 assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable"); |
0 | 150 |
151 // set the pending exception | |
152 thread->set_pending_exception(h_exception(), file, line); | |
153 | |
154 // vm log | |
12002 | 155 Events::log_exception(thread, "Exception <%s%s%s> (" INTPTR_FORMAT ") thrown at [%s, line %d]", |
156 h_exception->print_value_string(), message ? ": " : "", message ? message : "", | |
157 (address)h_exception(), file, line); | |
0 | 158 } |
159 | |
160 | |
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161 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message, |
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162 Handle h_loader, Handle h_protection_domain) { |
0 | 163 // Check for special boot-strapping/vm-thread handling |
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164 if (special_exception(thread, file, line, name, message)) return; |
0 | 165 // Create and throw exception |
166 Handle h_cause(thread, NULL); | |
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167 Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain); |
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168 _throw(thread, file, line, h_exception, message); |
0 | 169 } |
170 | |
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171 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause, |
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172 Handle h_loader, Handle h_protection_domain) { |
0 | 173 // Check for special boot-strapping/vm-thread handling |
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174 if (special_exception(thread, file, line, name, message)) return; |
0 | 175 // Create and throw exception and init cause |
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176 Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain); |
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177 _throw(thread, file, line, h_exception, message); |
0 | 178 } |
179 | |
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180 void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause, |
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181 Handle h_loader, Handle h_protection_domain) { |
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182 // Check for special boot-strapping/vm-thread handling |
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183 if (special_exception(thread, file, line, h_cause)) return; |
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184 // Create and throw exception |
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185 Handle h_exception = new_exception(thread, name, h_cause, h_loader, h_protection_domain); |
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186 _throw(thread, file, line, h_exception, NULL); |
0 | 187 } |
188 | |
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189 void Exceptions::_throw_args(Thread* thread, const char* file, int line, Symbol* name, Symbol* signature, JavaCallArguments *args) { |
0 | 190 // Check for special boot-strapping/vm-thread handling |
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191 if (special_exception(thread, file, line, name, NULL)) return; |
0 | 192 // Create and throw exception |
193 Handle h_loader(thread, NULL); | |
194 Handle h_prot(thread, NULL); | |
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195 Handle exception = new_exception(thread, name, signature, args, h_loader, h_prot); |
0 | 196 _throw(thread, file, line, exception); |
197 } | |
198 | |
199 | |
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200 // Methods for default parameters. |
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201 // NOTE: These must be here (and not in the header file) because of include circularities. |
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202 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause) { |
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203 _throw_msg_cause(thread, file, line, name, message, h_cause, Handle(thread, NULL), Handle(thread, NULL)); |
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204 } |
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205 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message) { |
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206 _throw_msg(thread, file, line, name, message, Handle(thread, NULL), Handle(thread, NULL)); |
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207 } |
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208 void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause) { |
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209 _throw_cause(thread, file, line, name, h_cause, Handle(thread, NULL), Handle(thread, NULL)); |
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210 } |
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211 |
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212 |
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213 void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line, methodHandle method) { |
0 | 214 Handle exception; |
215 if (!THREAD->has_pending_exception()) { | |
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216 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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217 oop e = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 218 exception = Handle(THREAD, e); // fill_in_stack trace does gc |
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219 assert(InstanceKlass::cast(k)->is_initialized(), "need to increase min_stack_allowed calculation"); |
0 | 220 if (StackTraceInThrowable) { |
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221 java_lang_Throwable::fill_in_stack_trace(exception, method()); |
0 | 222 } |
223 } else { | |
224 // if prior exception, throw that one instead | |
225 exception = Handle(THREAD, THREAD->pending_exception()); | |
226 } | |
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227 _throw(THREAD, file, line, exception); |
0 | 228 } |
229 | |
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230 void Exceptions::fthrow(Thread* thread, const char* file, int line, Symbol* h_name, const char* format, ...) { |
0 | 231 const int max_msg_size = 1024; |
232 va_list ap; | |
233 va_start(ap, format); | |
234 char msg[max_msg_size]; | |
235 vsnprintf(msg, max_msg_size, format, ap); | |
236 msg[max_msg_size-1] = '\0'; | |
237 va_end(ap); | |
238 _throw_msg(thread, file, line, h_name, msg); | |
239 } | |
240 | |
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241 |
0 | 242 // Creates an exception oop, calls the <init> method with the given signature. |
243 // and returns a Handle | |
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244 Handle Exceptions::new_exception(Thread *thread, Symbol* name, |
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245 Symbol* signature, JavaCallArguments *args, |
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246 Handle h_loader, Handle h_protection_domain) { |
0 | 247 assert(Universe::is_fully_initialized(), |
248 "cannot be called during initialization"); | |
249 assert(thread->is_Java_thread(), "can only be called by a Java thread"); | |
250 assert(!thread->has_pending_exception(), "already has exception"); | |
251 | |
252 Handle h_exception; | |
253 | |
254 // Resolve exception klass | |
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255 Klass* ik = SystemDictionary::resolve_or_fail(name, h_loader, h_protection_domain, true, thread); |
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256 instanceKlassHandle klass(thread, ik); |
0 | 257 |
258 if (!thread->has_pending_exception()) { | |
259 assert(klass.not_null(), "klass must exist"); | |
260 // We are about to create an instance - so make sure that klass is initialized | |
261 klass->initialize(thread); | |
262 if (!thread->has_pending_exception()) { | |
263 // Allocate new exception | |
264 h_exception = klass->allocate_instance_handle(thread); | |
265 if (!thread->has_pending_exception()) { | |
266 JavaValue result(T_VOID); | |
267 args->set_receiver(h_exception); | |
268 // Call constructor | |
269 JavaCalls::call_special(&result, klass, | |
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270 vmSymbols::object_initializer_name(), |
0 | 271 signature, |
272 args, | |
273 thread); | |
274 } | |
275 } | |
276 } | |
277 | |
278 // Check if another exception was thrown in the process, if so rethrow that one | |
279 if (thread->has_pending_exception()) { | |
280 h_exception = Handle(thread, thread->pending_exception()); | |
281 thread->clear_pending_exception(); | |
282 } | |
283 return h_exception; | |
284 } | |
285 | |
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286 // Creates an exception oop, calls the <init> method with the given signature. |
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287 // and returns a Handle |
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288 // Initializes the cause if cause non-null |
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289 Handle Exceptions::new_exception(Thread *thread, Symbol* name, |
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290 Symbol* signature, JavaCallArguments *args, |
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291 Handle h_cause, |
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292 Handle h_loader, Handle h_protection_domain) { |
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293 Handle h_exception = new_exception(thread, name, signature, args, h_loader, h_protection_domain); |
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294 |
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295 // Future: object initializer should take a cause argument |
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296 if (h_cause.not_null()) { |
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297 assert(h_cause->is_a(SystemDictionary::Throwable_klass()), |
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298 "exception cause is not a subclass of java/lang/Throwable"); |
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299 JavaValue result1(T_OBJECT); |
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300 JavaCallArguments args1; |
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301 args1.set_receiver(h_exception); |
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302 args1.push_oop(h_cause); |
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303 JavaCalls::call_virtual(&result1, h_exception->klass(), |
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304 vmSymbols::initCause_name(), |
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305 vmSymbols::throwable_throwable_signature(), |
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306 &args1, |
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307 thread); |
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308 } |
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309 |
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310 // Check if another exception was thrown in the process, if so rethrow that one |
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311 if (thread->has_pending_exception()) { |
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312 h_exception = Handle(thread, thread->pending_exception()); |
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313 thread->clear_pending_exception(); |
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314 } |
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315 return h_exception; |
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316 } |
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317 |
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318 // Convenience method. Calls either the <init>() or <init>(Throwable) method when |
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319 // creating a new exception |
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320 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
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321 Handle h_cause, |
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322 Handle h_loader, Handle h_protection_domain, |
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323 ExceptionMsgToUtf8Mode to_utf8_safe) { |
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324 JavaCallArguments args; |
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325 Symbol* signature = NULL; |
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326 if (h_cause.is_null()) { |
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327 signature = vmSymbols::void_method_signature(); |
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328 } else { |
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329 signature = vmSymbols::throwable_void_signature(); |
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330 args.push_oop(h_cause); |
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331 } |
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332 return new_exception(thread, name, signature, &args, h_loader, h_protection_domain); |
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333 } |
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334 |
0 | 335 // Convenience method. Calls either the <init>() or <init>(String) method when |
336 // creating a new exception | |
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337 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
0 | 338 const char* message, Handle h_cause, |
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339 Handle h_loader, Handle h_protection_domain, |
0 | 340 ExceptionMsgToUtf8Mode to_utf8_safe) { |
341 JavaCallArguments args; | |
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342 Symbol* signature = NULL; |
0 | 343 if (message == NULL) { |
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344 signature = vmSymbols::void_method_signature(); |
0 | 345 } else { |
346 // We want to allocate storage, but we can't do that if there's | |
347 // a pending exception, so we preserve any pending exception | |
348 // around the allocation. | |
349 // If we get an exception from the allocation, prefer that to | |
350 // the exception we are trying to build, or the pending exception. | |
351 // This is sort of like what PRESERVE_EXCEPTION_MARK does, except | |
352 // for the preferencing and the early returns. | |
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353 Handle incoming_exception(thread, NULL); |
0 | 354 if (thread->has_pending_exception()) { |
355 incoming_exception = Handle(thread, thread->pending_exception()); | |
356 thread->clear_pending_exception(); | |
357 } | |
358 Handle msg; | |
359 if (to_utf8_safe == safe_to_utf8) { | |
360 // Make a java UTF8 string. | |
361 msg = java_lang_String::create_from_str(message, thread); | |
362 } else { | |
363 // Make a java string keeping the encoding scheme of the original string. | |
364 msg = java_lang_String::create_from_platform_dependent_str(message, thread); | |
365 } | |
366 if (thread->has_pending_exception()) { | |
367 Handle exception(thread, thread->pending_exception()); | |
368 thread->clear_pending_exception(); | |
369 return exception; | |
370 } | |
371 if (incoming_exception.not_null()) { | |
372 return incoming_exception; | |
373 } | |
374 args.push_oop(msg); | |
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375 signature = vmSymbols::string_void_signature(); |
0 | 376 } |
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377 return new_exception(thread, name, signature, &args, h_cause, h_loader, h_protection_domain); |
0 | 378 } |
379 | |
380 // Another convenience method that creates handles for null class loaders and | |
381 // protection domains and null causes. | |
382 // If the last parameter 'to_utf8_mode' is safe_to_utf8, | |
383 // it means we can safely ignore the encoding scheme of the message string and | |
384 // convert it directly to a java UTF8 string. Otherwise, we need to take the | |
385 // encoding scheme of the string into account. One thing we should do at some | |
386 // point is to push this flag down to class java_lang_String since other | |
387 // classes may need similar functionalities. | |
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388 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
0 | 389 const char* message, |
390 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
391 | |
392 Handle h_loader(thread, NULL); | |
393 Handle h_prot(thread, NULL); | |
394 Handle h_cause(thread, NULL); | |
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395 return Exceptions::new_exception(thread, name, message, h_cause, h_loader, |
0 | 396 h_prot, to_utf8_safe); |
397 } | |
398 | |
399 // Implementation of ExceptionMark | |
400 | |
401 ExceptionMark::ExceptionMark(Thread*& thread) { | |
402 thread = Thread::current(); | |
403 _thread = thread; | |
404 if (_thread->has_pending_exception()) { | |
405 oop exception = _thread->pending_exception(); | |
406 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
407 exception->print(); | |
408 fatal("ExceptionMark constructor expects no pending exceptions"); | |
409 } | |
410 } | |
411 | |
412 | |
413 ExceptionMark::~ExceptionMark() { | |
414 if (_thread->has_pending_exception()) { | |
415 Handle exception(_thread, _thread->pending_exception()); | |
416 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
417 if (is_init_completed()) { | |
418 exception->print(); | |
419 fatal("ExceptionMark destructor expects no pending exceptions"); | |
420 } else { | |
421 vm_exit_during_initialization(exception); | |
422 } | |
423 } | |
424 } | |
425 | |
426 // ---------------------------------------------------------------------------------------- | |
427 | |
428 #ifndef PRODUCT | |
429 // caller frees value_string if necessary | |
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430 void Exceptions::debug_check_abort(const char *value_string, const char* message) { |
0 | 431 if (AbortVMOnException != NULL && value_string != NULL && |
432 strstr(value_string, AbortVMOnException)) { | |
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433 if (AbortVMOnExceptionMessage == NULL || message == NULL || |
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434 strcmp(message, AbortVMOnExceptionMessage) == 0) { |
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435 fatal(err_msg("Saw %s, aborting", value_string)); |
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436 } |
0 | 437 } |
438 } | |
439 | |
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440 void Exceptions::debug_check_abort(Handle exception, const char* message) { |
0 | 441 if (AbortVMOnException != NULL) { |
442 ResourceMark rm; | |
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443 if (message == NULL && exception->is_a(SystemDictionary::Throwable_klass())) { |
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444 oop msg = java_lang_Throwable::message(exception); |
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445 if (msg != NULL) { |
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446 message = java_lang_String::as_utf8_string(msg); |
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447 } |
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448 } |
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449 debug_check_abort(InstanceKlass::cast(exception()->klass())->external_name(), message); |
0 | 450 } |
451 } | |
452 #endif |