Mercurial > hg > truffle
annotate src/share/vm/utilities/exceptions.cpp @ 15306:7e0563f0d249
Rename LIRFrameStateBuilder to BaselineFrameStateBuilder.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Tue, 22 Apr 2014 20:16:38 +0200 |
parents | 4ca6dc0799b6 |
children | a20be10ad437 |
rev | line source |
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0 | 1 /* |
14909 | 2 * Copyright (c) 1998, 2012, 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 |
38 | |
39 // Implementation of ThreadShadow | |
40 void check_ThreadShadow() { | |
41 const ByteSize offset1 = byte_offset_of(ThreadShadow, _pending_exception); | |
42 const ByteSize offset2 = Thread::pending_exception_offset(); | |
43 if (offset1 != offset2) fatal("ThreadShadow::_pending_exception is not positioned correctly"); | |
44 } | |
45 | |
46 | |
47 void ThreadShadow::set_pending_exception(oop exception, const char* file, int line) { | |
48 assert(exception != NULL && exception->is_oop(), "invalid exception oop"); | |
49 _pending_exception = exception; | |
50 _exception_file = file; | |
51 _exception_line = line; | |
52 } | |
53 | |
54 void ThreadShadow::clear_pending_exception() { | |
55 if (TraceClearedExceptions) { | |
56 if (_pending_exception != NULL) { | |
57 tty->print_cr("Thread::clear_pending_exception: cleared exception:"); | |
58 _pending_exception->print(); | |
59 } | |
60 } | |
61 _pending_exception = NULL; | |
62 _exception_file = NULL; | |
63 _exception_line = 0; | |
64 } | |
65 // Implementation of Exceptions | |
66 | |
67 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Handle h_exception) { | |
68 // bootstrapping check | |
69 if (!Universe::is_fully_initialized()) { | |
70 vm_exit_during_initialization(h_exception); | |
71 ShouldNotReachHere(); | |
72 } | |
73 | |
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74 #ifdef ASSERT |
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75 // Check for trying to throw stack overflow before initialization is complete |
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76 // to prevent infinite recursion trying to initialize stack overflow without |
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77 // adequate stack space. |
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78 // This can happen with stress testing a large value of StackShadowPages |
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79 if (h_exception()->klass() == SystemDictionary::StackOverflowError_klass()) { |
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80 InstanceKlass* ik = InstanceKlass::cast(h_exception->klass()); |
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81 assert(ik->is_initialized(), |
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82 "need to increase min_stack_allowed calculation"); |
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83 } |
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84 #endif // ASSERT |
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85 |
0 | 86 if (thread->is_VM_thread() |
87 || thread->is_Compiler_thread() ) { | |
88 // We do not care what kind of exception we get for the vm-thread or a thread which | |
89 // is compiling. We just install a dummy exception object | |
90 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
91 return true; | |
92 } | |
93 | |
94 return false; | |
95 } | |
96 | |
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97 bool Exceptions::special_exception(Thread* thread, const char* file, int line, Symbol* h_name, const char* message) { |
0 | 98 // bootstrapping check |
99 if (!Universe::is_fully_initialized()) { | |
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100 if (h_name == NULL) { |
0 | 101 // atleast an informative message. |
102 vm_exit_during_initialization("Exception", message); | |
103 } else { | |
104 vm_exit_during_initialization(h_name, message); | |
105 } | |
106 ShouldNotReachHere(); | |
107 } | |
108 | |
109 if (thread->is_VM_thread() | |
110 || thread->is_Compiler_thread() ) { | |
111 // We do not care what kind of exception we get for the vm-thread or a thread which | |
112 // is compiling. We just install a dummy exception object | |
113 thread->set_pending_exception(Universe::vm_exception(), file, line); | |
114 return true; | |
115 } | |
116 return false; | |
117 } | |
118 | |
119 // This method should only be called from generated code, | |
120 // therefore the exception oop should be in the oopmap. | |
121 void Exceptions::_throw_oop(Thread* thread, const char* file, int line, oop exception) { | |
122 assert(exception != NULL, "exception should not be NULL"); | |
123 Handle h_exception = Handle(thread, exception); | |
124 _throw(thread, file, line, h_exception); | |
125 } | |
126 | |
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127 void Exceptions::_throw(Thread* thread, const char* file, int line, Handle h_exception, const char* message) { |
12002 | 128 ResourceMark rm; |
0 | 129 assert(h_exception() != NULL, "exception should not be NULL"); |
130 | |
131 // tracing (do this up front - so it works during boot strapping) | |
132 if (TraceExceptions) { | |
133 ttyLocker ttyl; | |
12002 | 134 tty->print_cr("Exception <%s%s%s> (" INTPTR_FORMAT ") \n" |
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135 "thrown [%s, line %d]\nfor thread " INTPTR_FORMAT, |
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136 h_exception->print_value_string(), |
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137 message ? ": " : "", message ? message : "", |
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138 (address)h_exception(), file, line, thread); |
0 | 139 } |
140 // for AbortVMOnException flag | |
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141 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception, message)); |
0 | 142 |
143 // Check for special boot-strapping/vm-thread handling | |
12002 | 144 if (special_exception(thread, file, line, h_exception)) { |
145 return; | |
146 } | |
0 | 147 |
1142 | 148 assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable"); |
0 | 149 |
150 // set the pending exception | |
151 thread->set_pending_exception(h_exception(), file, line); | |
152 | |
153 // vm log | |
12002 | 154 Events::log_exception(thread, "Exception <%s%s%s> (" INTPTR_FORMAT ") thrown at [%s, line %d]", |
155 h_exception->print_value_string(), message ? ": " : "", message ? message : "", | |
156 (address)h_exception(), file, line); | |
0 | 157 } |
158 | |
159 | |
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160 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message, |
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161 Handle h_loader, Handle h_protection_domain) { |
0 | 162 // Check for special boot-strapping/vm-thread handling |
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163 if (special_exception(thread, file, line, name, message)) return; |
0 | 164 // Create and throw exception |
165 Handle h_cause(thread, NULL); | |
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166 Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain); |
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167 _throw(thread, file, line, h_exception, message); |
0 | 168 } |
169 | |
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170 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause, |
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171 Handle h_loader, Handle h_protection_domain) { |
0 | 172 // Check for special boot-strapping/vm-thread handling |
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173 if (special_exception(thread, file, line, name, message)) return; |
0 | 174 // Create and throw exception and init cause |
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175 Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain); |
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176 _throw(thread, file, line, h_exception, message); |
0 | 177 } |
178 | |
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179 void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause, |
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180 Handle h_loader, Handle h_protection_domain) { |
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181 // Check for special boot-strapping/vm-thread handling |
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182 if (special_exception(thread, file, line, h_cause)) return; |
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183 // Create and throw exception |
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184 Handle h_exception = new_exception(thread, name, h_cause, h_loader, h_protection_domain); |
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185 _throw(thread, file, line, h_exception, NULL); |
0 | 186 } |
187 | |
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188 void Exceptions::_throw_args(Thread* thread, const char* file, int line, Symbol* name, Symbol* signature, JavaCallArguments *args) { |
0 | 189 // Check for special boot-strapping/vm-thread handling |
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190 if (special_exception(thread, file, line, name, NULL)) return; |
0 | 191 // Create and throw exception |
192 Handle h_loader(thread, NULL); | |
193 Handle h_prot(thread, NULL); | |
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194 Handle exception = new_exception(thread, name, signature, args, h_loader, h_prot); |
0 | 195 _throw(thread, file, line, exception); |
196 } | |
197 | |
198 | |
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199 // Methods for default parameters. |
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200 // NOTE: These must be here (and not in the header file) because of include circularities. |
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201 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause) { |
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202 _throw_msg_cause(thread, file, line, name, message, h_cause, Handle(thread, NULL), Handle(thread, NULL)); |
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203 } |
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204 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message) { |
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205 _throw_msg(thread, file, line, name, message, Handle(thread, NULL), Handle(thread, NULL)); |
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206 } |
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207 void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause) { |
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208 _throw_cause(thread, file, line, name, h_cause, Handle(thread, NULL), Handle(thread, NULL)); |
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209 } |
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210 |
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211 |
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212 void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line, methodHandle method) { |
0 | 213 Handle exception; |
214 if (!THREAD->has_pending_exception()) { | |
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215 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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216 oop e = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 217 exception = Handle(THREAD, e); // fill_in_stack trace does gc |
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218 assert(InstanceKlass::cast(k)->is_initialized(), "need to increase min_stack_allowed calculation"); |
0 | 219 if (StackTraceInThrowable) { |
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220 java_lang_Throwable::fill_in_stack_trace(exception, method()); |
0 | 221 } |
222 } else { | |
223 // if prior exception, throw that one instead | |
224 exception = Handle(THREAD, THREAD->pending_exception()); | |
225 } | |
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226 _throw(THREAD, file, line, exception); |
0 | 227 } |
228 | |
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229 void Exceptions::fthrow(Thread* thread, const char* file, int line, Symbol* h_name, const char* format, ...) { |
0 | 230 const int max_msg_size = 1024; |
231 va_list ap; | |
232 va_start(ap, format); | |
233 char msg[max_msg_size]; | |
234 vsnprintf(msg, max_msg_size, format, ap); | |
235 msg[max_msg_size-1] = '\0'; | |
236 va_end(ap); | |
237 _throw_msg(thread, file, line, h_name, msg); | |
238 } | |
239 | |
240 // Creates an exception oop, calls the <init> method with the given signature. | |
241 // and returns a Handle | |
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242 Handle Exceptions::new_exception(Thread *thread, Symbol* name, |
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243 Symbol* signature, JavaCallArguments *args, |
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244 Handle h_loader, Handle h_protection_domain) { |
0 | 245 assert(Universe::is_fully_initialized(), |
246 "cannot be called during initialization"); | |
247 assert(thread->is_Java_thread(), "can only be called by a Java thread"); | |
248 assert(!thread->has_pending_exception(), "already has exception"); | |
249 | |
250 Handle h_exception; | |
251 | |
252 // Resolve exception klass | |
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253 Klass* ik = SystemDictionary::resolve_or_fail(name, h_loader, h_protection_domain, true, thread); |
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254 instanceKlassHandle klass(thread, ik); |
0 | 255 |
256 if (!thread->has_pending_exception()) { | |
257 assert(klass.not_null(), "klass must exist"); | |
258 // We are about to create an instance - so make sure that klass is initialized | |
259 klass->initialize(thread); | |
260 if (!thread->has_pending_exception()) { | |
261 // Allocate new exception | |
262 h_exception = klass->allocate_instance_handle(thread); | |
263 if (!thread->has_pending_exception()) { | |
264 JavaValue result(T_VOID); | |
265 args->set_receiver(h_exception); | |
266 // Call constructor | |
267 JavaCalls::call_special(&result, klass, | |
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268 vmSymbols::object_initializer_name(), |
0 | 269 signature, |
270 args, | |
271 thread); | |
272 } | |
273 } | |
274 } | |
275 | |
276 // Check if another exception was thrown in the process, if so rethrow that one | |
277 if (thread->has_pending_exception()) { | |
278 h_exception = Handle(thread, thread->pending_exception()); | |
279 thread->clear_pending_exception(); | |
280 } | |
281 return h_exception; | |
282 } | |
283 | |
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284 // Creates an exception oop, calls the <init> method with the given signature. |
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285 // and returns a Handle |
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286 // Initializes the cause if cause non-null |
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287 Handle Exceptions::new_exception(Thread *thread, Symbol* name, |
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288 Symbol* signature, JavaCallArguments *args, |
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289 Handle h_cause, |
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290 Handle h_loader, Handle h_protection_domain) { |
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291 Handle h_exception = new_exception(thread, name, signature, args, h_loader, h_protection_domain); |
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292 |
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293 // Future: object initializer should take a cause argument |
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294 if (h_cause.not_null()) { |
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295 assert(h_cause->is_a(SystemDictionary::Throwable_klass()), |
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296 "exception cause is not a subclass of java/lang/Throwable"); |
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297 JavaValue result1(T_OBJECT); |
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298 JavaCallArguments args1; |
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299 args1.set_receiver(h_exception); |
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300 args1.push_oop(h_cause); |
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301 JavaCalls::call_virtual(&result1, h_exception->klass(), |
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302 vmSymbols::initCause_name(), |
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303 vmSymbols::throwable_throwable_signature(), |
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304 &args1, |
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305 thread); |
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306 } |
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307 |
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308 // Check if another exception was thrown in the process, if so rethrow that one |
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309 if (thread->has_pending_exception()) { |
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310 h_exception = Handle(thread, thread->pending_exception()); |
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311 thread->clear_pending_exception(); |
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312 } |
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313 return h_exception; |
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314 } |
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315 |
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316 // Convenience method. Calls either the <init>() or <init>(Throwable) method when |
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317 // creating a new exception |
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318 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
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319 Handle h_cause, |
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320 Handle h_loader, Handle h_protection_domain, |
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321 ExceptionMsgToUtf8Mode to_utf8_safe) { |
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322 JavaCallArguments args; |
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323 Symbol* signature = NULL; |
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324 if (h_cause.is_null()) { |
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325 signature = vmSymbols::void_method_signature(); |
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326 } else { |
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327 signature = vmSymbols::throwable_void_signature(); |
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328 args.push_oop(h_cause); |
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329 } |
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330 return new_exception(thread, name, signature, &args, h_loader, h_protection_domain); |
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331 } |
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332 |
0 | 333 // Convenience method. Calls either the <init>() or <init>(String) method when |
334 // creating a new exception | |
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335 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
0 | 336 const char* message, Handle h_cause, |
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337 Handle h_loader, Handle h_protection_domain, |
0 | 338 ExceptionMsgToUtf8Mode to_utf8_safe) { |
339 JavaCallArguments args; | |
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340 Symbol* signature = NULL; |
0 | 341 if (message == NULL) { |
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342 signature = vmSymbols::void_method_signature(); |
0 | 343 } else { |
344 // We want to allocate storage, but we can't do that if there's | |
345 // a pending exception, so we preserve any pending exception | |
346 // around the allocation. | |
347 // If we get an exception from the allocation, prefer that to | |
348 // the exception we are trying to build, or the pending exception. | |
349 // This is sort of like what PRESERVE_EXCEPTION_MARK does, except | |
350 // for the preferencing and the early returns. | |
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351 Handle incoming_exception(thread, NULL); |
0 | 352 if (thread->has_pending_exception()) { |
353 incoming_exception = Handle(thread, thread->pending_exception()); | |
354 thread->clear_pending_exception(); | |
355 } | |
356 Handle msg; | |
357 if (to_utf8_safe == safe_to_utf8) { | |
358 // Make a java UTF8 string. | |
359 msg = java_lang_String::create_from_str(message, thread); | |
360 } else { | |
361 // Make a java string keeping the encoding scheme of the original string. | |
362 msg = java_lang_String::create_from_platform_dependent_str(message, thread); | |
363 } | |
364 if (thread->has_pending_exception()) { | |
365 Handle exception(thread, thread->pending_exception()); | |
366 thread->clear_pending_exception(); | |
367 return exception; | |
368 } | |
369 if (incoming_exception.not_null()) { | |
370 return incoming_exception; | |
371 } | |
372 args.push_oop(msg); | |
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373 signature = vmSymbols::string_void_signature(); |
0 | 374 } |
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375 return new_exception(thread, name, signature, &args, h_cause, h_loader, h_protection_domain); |
0 | 376 } |
377 | |
378 // Another convenience method that creates handles for null class loaders and | |
379 // protection domains and null causes. | |
380 // If the last parameter 'to_utf8_mode' is safe_to_utf8, | |
381 // it means we can safely ignore the encoding scheme of the message string and | |
382 // convert it directly to a java UTF8 string. Otherwise, we need to take the | |
383 // encoding scheme of the string into account. One thing we should do at some | |
384 // point is to push this flag down to class java_lang_String since other | |
385 // classes may need similar functionalities. | |
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386 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
0 | 387 const char* message, |
388 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
389 | |
390 Handle h_loader(thread, NULL); | |
391 Handle h_prot(thread, NULL); | |
392 Handle h_cause(thread, NULL); | |
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393 return Exceptions::new_exception(thread, name, message, h_cause, h_loader, |
0 | 394 h_prot, to_utf8_safe); |
395 } | |
396 | |
397 // Implementation of ExceptionMark | |
398 | |
399 ExceptionMark::ExceptionMark(Thread*& thread) { | |
400 thread = Thread::current(); | |
401 _thread = thread; | |
402 if (_thread->has_pending_exception()) { | |
403 oop exception = _thread->pending_exception(); | |
404 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
405 exception->print(); | |
406 fatal("ExceptionMark constructor expects no pending exceptions"); | |
407 } | |
408 } | |
409 | |
410 | |
411 ExceptionMark::~ExceptionMark() { | |
412 if (_thread->has_pending_exception()) { | |
413 Handle exception(_thread, _thread->pending_exception()); | |
414 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
415 if (is_init_completed()) { | |
416 exception->print(); | |
417 fatal("ExceptionMark destructor expects no pending exceptions"); | |
418 } else { | |
419 vm_exit_during_initialization(exception); | |
420 } | |
421 } | |
422 } | |
423 | |
424 // ---------------------------------------------------------------------------------------- | |
425 | |
426 #ifndef PRODUCT | |
427 // caller frees value_string if necessary | |
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428 void Exceptions::debug_check_abort(const char *value_string, const char* message) { |
0 | 429 if (AbortVMOnException != NULL && value_string != NULL && |
430 strstr(value_string, AbortVMOnException)) { | |
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431 if (AbortVMOnExceptionMessage == NULL || message == NULL || |
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432 strcmp(message, AbortVMOnExceptionMessage) == 0) { |
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433 fatal(err_msg("Saw %s, aborting", value_string)); |
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434 } |
0 | 435 } |
436 } | |
437 | |
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438 void Exceptions::debug_check_abort(Handle exception, const char* message) { |
0 | 439 if (AbortVMOnException != NULL) { |
440 ResourceMark rm; | |
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441 if (message == NULL && exception->is_a(SystemDictionary::Throwable_klass())) { |
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442 oop msg = java_lang_Throwable::message(exception); |
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443 if (msg != NULL) { |
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444 message = java_lang_String::as_utf8_string(msg); |
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445 } |
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446 } |
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447 debug_check_abort(InstanceKlass::cast(exception()->klass())->external_name(), message); |
0 | 448 } |
449 } | |
450 #endif |