Mercurial > hg > truffle
annotate src/share/vm/utilities/exceptions.cpp @ 9099:ed81c74f92ff
Cache boolean flags instead of full Annotation objects
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Fri, 12 Apr 2013 16:05:56 -0700 |
parents | 291ffc492eb6 |
children | 3cce976666d9 |
rev | line source |
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0 | 1 /* |
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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) { |
0 | 128 assert(h_exception() != NULL, "exception should not be NULL"); |
129 | |
130 // tracing (do this up front - so it works during boot strapping) | |
131 if (TraceExceptions) { | |
132 ttyLocker ttyl; | |
133 ResourceMark rm; | |
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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 | |
144 if (special_exception(thread, file, line, h_exception)) return; | |
145 | |
1142 | 146 assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable"); |
0 | 147 |
148 // set the pending exception | |
149 thread->set_pending_exception(h_exception(), file, line); | |
150 | |
151 // vm log | |
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152 Events::log_exception(thread, "Threw " INTPTR_FORMAT " at %s:%d", (address)h_exception(), file, line); |
0 | 153 } |
154 | |
155 | |
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156 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message, |
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157 Handle h_loader, Handle h_protection_domain) { |
0 | 158 // Check for special boot-strapping/vm-thread handling |
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159 if (special_exception(thread, file, line, name, message)) return; |
0 | 160 // Create and throw exception |
161 Handle h_cause(thread, NULL); | |
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162 Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain); |
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163 _throw(thread, file, line, h_exception, message); |
0 | 164 } |
165 | |
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166 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause, |
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167 Handle h_loader, Handle h_protection_domain) { |
0 | 168 // Check for special boot-strapping/vm-thread handling |
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169 if (special_exception(thread, file, line, name, message)) return; |
0 | 170 // Create and throw exception and init cause |
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171 Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain); |
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172 _throw(thread, file, line, h_exception, message); |
0 | 173 } |
174 | |
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175 void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause, |
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176 Handle h_loader, Handle h_protection_domain) { |
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177 // Check for special boot-strapping/vm-thread handling |
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178 if (special_exception(thread, file, line, h_cause)) return; |
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179 // Create and throw exception |
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180 Handle h_exception = new_exception(thread, name, h_cause, h_loader, h_protection_domain); |
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181 _throw(thread, file, line, h_exception, NULL); |
0 | 182 } |
183 | |
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184 void Exceptions::_throw_args(Thread* thread, const char* file, int line, Symbol* name, Symbol* signature, JavaCallArguments *args) { |
0 | 185 // Check for special boot-strapping/vm-thread handling |
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186 if (special_exception(thread, file, line, name, NULL)) return; |
0 | 187 // Create and throw exception |
188 Handle h_loader(thread, NULL); | |
189 Handle h_prot(thread, NULL); | |
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190 Handle exception = new_exception(thread, name, signature, args, h_loader, h_prot); |
0 | 191 _throw(thread, file, line, exception); |
192 } | |
193 | |
194 | |
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195 // Methods for default parameters. |
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196 // NOTE: These must be here (and not in the header file) because of include circularities. |
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197 void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause) { |
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198 _throw_msg_cause(thread, file, line, name, message, h_cause, Handle(thread, NULL), Handle(thread, NULL)); |
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199 } |
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200 void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message) { |
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201 _throw_msg(thread, file, line, name, message, Handle(thread, NULL), Handle(thread, NULL)); |
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202 } |
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203 void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause) { |
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204 _throw_cause(thread, file, line, name, h_cause, Handle(thread, NULL), Handle(thread, NULL)); |
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205 } |
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206 |
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207 |
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208 void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line, methodHandle method) { |
0 | 209 Handle exception; |
210 if (!THREAD->has_pending_exception()) { | |
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211 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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212 oop e = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 213 exception = Handle(THREAD, e); // fill_in_stack trace does gc |
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214 assert(InstanceKlass::cast(k)->is_initialized(), "need to increase min_stack_allowed calculation"); |
0 | 215 if (StackTraceInThrowable) { |
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216 java_lang_Throwable::fill_in_stack_trace(exception, method()); |
0 | 217 } |
218 } else { | |
219 // if prior exception, throw that one instead | |
220 exception = Handle(THREAD, THREAD->pending_exception()); | |
221 } | |
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222 _throw(THREAD, file, line, exception); |
0 | 223 } |
224 | |
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225 void Exceptions::fthrow(Thread* thread, const char* file, int line, Symbol* h_name, const char* format, ...) { |
0 | 226 const int max_msg_size = 1024; |
227 va_list ap; | |
228 va_start(ap, format); | |
229 char msg[max_msg_size]; | |
230 vsnprintf(msg, max_msg_size, format, ap); | |
231 msg[max_msg_size-1] = '\0'; | |
232 va_end(ap); | |
233 _throw_msg(thread, file, line, h_name, msg); | |
234 } | |
235 | |
236 // Creates an exception oop, calls the <init> method with the given signature. | |
237 // and returns a Handle | |
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238 Handle Exceptions::new_exception(Thread *thread, Symbol* name, |
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239 Symbol* signature, JavaCallArguments *args, |
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240 Handle h_loader, Handle h_protection_domain) { |
0 | 241 assert(Universe::is_fully_initialized(), |
242 "cannot be called during initialization"); | |
243 assert(thread->is_Java_thread(), "can only be called by a Java thread"); | |
244 assert(!thread->has_pending_exception(), "already has exception"); | |
245 | |
246 Handle h_exception; | |
247 | |
248 // Resolve exception klass | |
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249 Klass* ik = SystemDictionary::resolve_or_fail(name, h_loader, h_protection_domain, true, thread); |
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250 instanceKlassHandle klass(thread, ik); |
0 | 251 |
252 if (!thread->has_pending_exception()) { | |
253 assert(klass.not_null(), "klass must exist"); | |
254 // We are about to create an instance - so make sure that klass is initialized | |
255 klass->initialize(thread); | |
256 if (!thread->has_pending_exception()) { | |
257 // Allocate new exception | |
258 h_exception = klass->allocate_instance_handle(thread); | |
259 if (!thread->has_pending_exception()) { | |
260 JavaValue result(T_VOID); | |
261 args->set_receiver(h_exception); | |
262 // Call constructor | |
263 JavaCalls::call_special(&result, klass, | |
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264 vmSymbols::object_initializer_name(), |
0 | 265 signature, |
266 args, | |
267 thread); | |
268 } | |
269 } | |
270 } | |
271 | |
272 // Check if another exception was thrown in the process, if so rethrow that one | |
273 if (thread->has_pending_exception()) { | |
274 h_exception = Handle(thread, thread->pending_exception()); | |
275 thread->clear_pending_exception(); | |
276 } | |
277 return h_exception; | |
278 } | |
279 | |
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280 // Creates an exception oop, calls the <init> method with the given signature. |
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281 // and returns a Handle |
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282 // Initializes the cause if cause non-null |
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283 Handle Exceptions::new_exception(Thread *thread, Symbol* name, |
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284 Symbol* signature, JavaCallArguments *args, |
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285 Handle h_cause, |
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286 Handle h_loader, Handle h_protection_domain) { |
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287 Handle h_exception = new_exception(thread, name, signature, args, h_loader, h_protection_domain); |
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288 |
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289 // Future: object initializer should take a cause argument |
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290 if (h_cause.not_null()) { |
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291 assert(h_cause->is_a(SystemDictionary::Throwable_klass()), |
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292 "exception cause is not a subclass of java/lang/Throwable"); |
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293 JavaValue result1(T_OBJECT); |
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294 JavaCallArguments args1; |
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295 args1.set_receiver(h_exception); |
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296 args1.push_oop(h_cause); |
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297 JavaCalls::call_virtual(&result1, h_exception->klass(), |
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298 vmSymbols::initCause_name(), |
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299 vmSymbols::throwable_throwable_signature(), |
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300 &args1, |
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301 thread); |
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302 } |
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303 |
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304 // Check if another exception was thrown in the process, if so rethrow that one |
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305 if (thread->has_pending_exception()) { |
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306 h_exception = Handle(thread, thread->pending_exception()); |
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307 thread->clear_pending_exception(); |
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308 } |
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309 return h_exception; |
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310 } |
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311 |
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312 // Convenience method. Calls either the <init>() or <init>(Throwable) method when |
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313 // creating a new exception |
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314 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
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315 Handle h_cause, |
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316 Handle h_loader, Handle h_protection_domain, |
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317 ExceptionMsgToUtf8Mode to_utf8_safe) { |
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318 JavaCallArguments args; |
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319 Symbol* signature = NULL; |
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320 if (h_cause.is_null()) { |
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321 signature = vmSymbols::void_method_signature(); |
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322 } else { |
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323 signature = vmSymbols::throwable_void_signature(); |
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324 args.push_oop(h_cause); |
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325 } |
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326 return new_exception(thread, name, signature, &args, h_loader, h_protection_domain); |
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327 } |
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328 |
0 | 329 // Convenience method. Calls either the <init>() or <init>(String) method when |
330 // creating a new exception | |
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331 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
0 | 332 const char* message, Handle h_cause, |
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333 Handle h_loader, Handle h_protection_domain, |
0 | 334 ExceptionMsgToUtf8Mode to_utf8_safe) { |
335 JavaCallArguments args; | |
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336 Symbol* signature = NULL; |
0 | 337 if (message == NULL) { |
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338 signature = vmSymbols::void_method_signature(); |
0 | 339 } else { |
340 // We want to allocate storage, but we can't do that if there's | |
341 // a pending exception, so we preserve any pending exception | |
342 // around the allocation. | |
343 // If we get an exception from the allocation, prefer that to | |
344 // the exception we are trying to build, or the pending exception. | |
345 // This is sort of like what PRESERVE_EXCEPTION_MARK does, except | |
346 // for the preferencing and the early returns. | |
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347 Handle incoming_exception(thread, NULL); |
0 | 348 if (thread->has_pending_exception()) { |
349 incoming_exception = Handle(thread, thread->pending_exception()); | |
350 thread->clear_pending_exception(); | |
351 } | |
352 Handle msg; | |
353 if (to_utf8_safe == safe_to_utf8) { | |
354 // Make a java UTF8 string. | |
355 msg = java_lang_String::create_from_str(message, thread); | |
356 } else { | |
357 // Make a java string keeping the encoding scheme of the original string. | |
358 msg = java_lang_String::create_from_platform_dependent_str(message, thread); | |
359 } | |
360 if (thread->has_pending_exception()) { | |
361 Handle exception(thread, thread->pending_exception()); | |
362 thread->clear_pending_exception(); | |
363 return exception; | |
364 } | |
365 if (incoming_exception.not_null()) { | |
366 return incoming_exception; | |
367 } | |
368 args.push_oop(msg); | |
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369 signature = vmSymbols::string_void_signature(); |
0 | 370 } |
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371 return new_exception(thread, name, signature, &args, h_cause, h_loader, h_protection_domain); |
0 | 372 } |
373 | |
374 // Another convenience method that creates handles for null class loaders and | |
375 // protection domains and null causes. | |
376 // If the last parameter 'to_utf8_mode' is safe_to_utf8, | |
377 // it means we can safely ignore the encoding scheme of the message string and | |
378 // convert it directly to a java UTF8 string. Otherwise, we need to take the | |
379 // encoding scheme of the string into account. One thing we should do at some | |
380 // point is to push this flag down to class java_lang_String since other | |
381 // classes may need similar functionalities. | |
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382 Handle Exceptions::new_exception(Thread* thread, Symbol* name, |
0 | 383 const char* message, |
384 ExceptionMsgToUtf8Mode to_utf8_safe) { | |
385 | |
386 Handle h_loader(thread, NULL); | |
387 Handle h_prot(thread, NULL); | |
388 Handle h_cause(thread, NULL); | |
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389 return Exceptions::new_exception(thread, name, message, h_cause, h_loader, |
0 | 390 h_prot, to_utf8_safe); |
391 } | |
392 | |
393 // Implementation of ExceptionMark | |
394 | |
395 ExceptionMark::ExceptionMark(Thread*& thread) { | |
396 thread = Thread::current(); | |
397 _thread = thread; | |
398 if (_thread->has_pending_exception()) { | |
399 oop exception = _thread->pending_exception(); | |
400 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
401 exception->print(); | |
402 fatal("ExceptionMark constructor expects no pending exceptions"); | |
403 } | |
404 } | |
405 | |
406 | |
407 ExceptionMark::~ExceptionMark() { | |
408 if (_thread->has_pending_exception()) { | |
409 Handle exception(_thread, _thread->pending_exception()); | |
410 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
411 if (is_init_completed()) { | |
412 exception->print(); | |
413 fatal("ExceptionMark destructor expects no pending exceptions"); | |
414 } else { | |
415 vm_exit_during_initialization(exception); | |
416 } | |
417 } | |
418 } | |
419 | |
420 // ---------------------------------------------------------------------------------------- | |
421 | |
422 #ifndef PRODUCT | |
423 // caller frees value_string if necessary | |
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424 void Exceptions::debug_check_abort(const char *value_string, const char* message) { |
0 | 425 if (AbortVMOnException != NULL && value_string != NULL && |
426 strstr(value_string, AbortVMOnException)) { | |
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427 if (AbortVMOnExceptionMessage == NULL || message == NULL || |
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428 strcmp(message, AbortVMOnExceptionMessage) == 0) { |
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429 fatal(err_msg("Saw %s, aborting", value_string)); |
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430 } |
0 | 431 } |
432 } | |
433 | |
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434 void Exceptions::debug_check_abort(Handle exception, const char* message) { |
0 | 435 if (AbortVMOnException != NULL) { |
436 ResourceMark rm; | |
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437 if (message == NULL && exception->is_a(SystemDictionary::Throwable_klass())) { |
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438 oop msg = java_lang_Throwable::message(exception); |
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439 if (msg != NULL) { |
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440 message = java_lang_String::as_utf8_string(msg); |
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441 } |
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442 } |
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443 debug_check_abort(InstanceKlass::cast(exception()->klass())->external_name(), message); |
0 | 444 } |
445 } | |
446 #endif |