author | stefank |
Tue, 23 Nov 2010 13:22:55 -0800 | |
changeset 7397 | 5b173b4ca846 |
parent 6964 | 6e45ffa3bccf |
child 8076 | 96d498ec7ae1 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
7397 | 2 |
* Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. |
1 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 |
* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
1 | 22 |
* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "classfile/vmSymbols.hpp" |
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#include "compiler/compileBroker.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/init.hpp" |
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#include "runtime/java.hpp" |
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#include "runtime/javaCalls.hpp" |
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#include "runtime/threadCritical.hpp" |
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#include "utilities/events.hpp" |
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#include "utilities/exceptions.hpp" |
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#ifdef TARGET_OS_FAMILY_linux |
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# include "thread_linux.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_FAMILY_solaris |
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# include "thread_solaris.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_FAMILY_windows |
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# include "thread_windows.inline.hpp" |
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#endif |
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// Implementation of ThreadShadow |
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void check_ThreadShadow() { |
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const ByteSize offset1 = byte_offset_of(ThreadShadow, _pending_exception); |
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const ByteSize offset2 = Thread::pending_exception_offset(); |
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if (offset1 != offset2) fatal("ThreadShadow::_pending_exception is not positioned correctly"); |
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} |
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void ThreadShadow::set_pending_exception(oop exception, const char* file, int line) { |
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assert(exception != NULL && exception->is_oop(), "invalid exception oop"); |
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_pending_exception = exception; |
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_exception_file = file; |
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_exception_line = line; |
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} |
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||
62 |
void ThreadShadow::clear_pending_exception() { |
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if (TraceClearedExceptions) { |
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if (_pending_exception != NULL) { |
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tty->print_cr("Thread::clear_pending_exception: cleared exception:"); |
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_pending_exception->print(); |
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} |
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} |
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_pending_exception = NULL; |
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_exception_file = NULL; |
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_exception_line = 0; |
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} |
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// Implementation of Exceptions |
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bool Exceptions::special_exception(Thread* thread, const char* file, int line, Handle h_exception) { |
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// bootstrapping check |
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if (!Universe::is_fully_initialized()) { |
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vm_exit_during_initialization(h_exception); |
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ShouldNotReachHere(); |
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} |
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#ifdef ASSERT |
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// Check for trying to throw stack overflow before initialization is complete |
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// to prevent infinite recursion trying to initialize stack overflow without |
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// adequate stack space. |
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// This can happen with stress testing a large value of StackShadowPages |
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if (h_exception()->klass() == SystemDictionary::StackOverflowError_klass()) { |
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instanceKlass* ik = instanceKlass::cast(h_exception->klass()); |
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assert(ik->is_initialized(), |
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"need to increase min_stack_allowed calculation"); |
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} |
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#endif // ASSERT |
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if (thread->is_VM_thread() |
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|| thread->is_Compiler_thread() ) { |
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// We do not care what kind of exception we get for the vm-thread or a thread which |
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// is compiling. We just install a dummy exception object |
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thread->set_pending_exception(Universe::vm_exception(), file, line); |
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return true; |
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} |
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return false; |
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} |
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bool Exceptions::special_exception(Thread* thread, const char* file, int line, symbolHandle h_name, const char* message) { |
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// bootstrapping check |
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107 |
if (!Universe::is_fully_initialized()) { |
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108 |
if (h_name.is_null()) { |
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// atleast an informative message. |
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vm_exit_during_initialization("Exception", message); |
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} else { |
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vm_exit_during_initialization(h_name, message); |
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} |
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ShouldNotReachHere(); |
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} |
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||
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if (thread->is_VM_thread() |
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|| thread->is_Compiler_thread() ) { |
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// We do not care what kind of exception we get for the vm-thread or a thread which |
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// is compiling. We just install a dummy exception object |
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thread->set_pending_exception(Universe::vm_exception(), file, line); |
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return true; |
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} |
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return false; |
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} |
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// This method should only be called from generated code, |
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// therefore the exception oop should be in the oopmap. |
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void Exceptions::_throw_oop(Thread* thread, const char* file, int line, oop exception) { |
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assert(exception != NULL, "exception should not be NULL"); |
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Handle h_exception = Handle(thread, exception); |
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_throw(thread, file, line, h_exception); |
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} |
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void Exceptions::_throw(Thread* thread, const char* file, int line, Handle h_exception, const char* message) { |
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assert(h_exception() != NULL, "exception should not be NULL"); |
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// tracing (do this up front - so it works during boot strapping) |
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if (TraceExceptions) { |
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ttyLocker ttyl; |
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ResourceMark rm; |
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tty->print_cr("Exception <%s>%s%s (" INTPTR_FORMAT " ) \n" |
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"thrown [%s, line %d]\nfor thread " INTPTR_FORMAT, |
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h_exception->print_value_string(), |
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message ? ": " : "", message ? message : "", |
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(address)h_exception(), file, line, thread); |
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} |
148 |
// for AbortVMOnException flag |
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NOT_PRODUCT(Exceptions::debug_check_abort(h_exception, message)); |
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// Check for special boot-strapping/vm-thread handling |
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if (special_exception(thread, file, line, h_exception)) return; |
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assert(h_exception->is_a(SystemDictionary::Throwable_klass()), "exception is not a subclass of java/lang/Throwable"); |
1 | 155 |
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// set the pending exception |
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thread->set_pending_exception(h_exception(), file, line); |
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// vm log |
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Events::log("throw_exception " INTPTR_FORMAT, (address)h_exception()); |
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} |
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void Exceptions::_throw_msg(Thread* thread, const char* file, int line, symbolHandle h_name, const char* message, Handle h_loader, Handle h_protection_domain) { |
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// Check for special boot-strapping/vm-thread handling |
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if (special_exception(thread, file, line, h_name, message)) return; |
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// Create and throw exception |
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Handle h_cause(thread, NULL); |
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Handle h_exception = new_exception(thread, h_name, message, h_cause, h_loader, h_protection_domain); |
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_throw(thread, file, line, h_exception, message); |
1 | 171 |
} |
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173 |
// Throw an exception with a message and a cause |
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174 |
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) { |
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175 |
// Check for special boot-strapping/vm-thread handling |
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176 |
if (special_exception(thread, file, line, h_name, message)) return; |
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// Create and throw exception and init cause |
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Handle h_exception = new_exception(thread, h_name, message, h_cause, h_loader, h_protection_domain); |
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_throw(thread, file, line, h_exception, message); |
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} |
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182 |
// This version creates handles and calls the other version |
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183 |
void Exceptions::_throw_msg(Thread* thread, const char* file, int line, |
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symbolOop name, const char* message) { |
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185 |
symbolHandle h_name(thread, name); |
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Handle h_loader(thread, NULL); |
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Handle h_protection_domain(thread, NULL); |
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Exceptions::_throw_msg(thread, file, line, h_name, message, h_loader, h_protection_domain); |
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189 |
} |
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190 |
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191 |
// This version already has a handle for name |
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void Exceptions::_throw_msg(Thread* thread, const char* file, int line, |
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193 |
symbolHandle name, const char* message) { |
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194 |
Handle h_loader(thread, NULL); |
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Handle h_protection_domain(thread, NULL); |
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Exceptions::_throw_msg(thread, file, line, name, message, h_loader, h_protection_domain); |
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197 |
} |
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198 |
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199 |
// This version already has a handle for name |
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200 |
void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, |
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201 |
symbolHandle name, const char* message, Handle cause) { |
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202 |
Handle h_loader(thread, NULL); |
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Handle h_protection_domain(thread, NULL); |
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Exceptions::_throw_msg_cause(thread, file, line, name, message, cause, h_loader, h_protection_domain); |
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205 |
} |
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206 |
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207 |
void Exceptions::_throw_args(Thread* thread, const char* file, int line, symbolHandle h_name, symbolHandle h_signature, JavaCallArguments *args) { |
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208 |
// Check for special boot-strapping/vm-thread handling |
|
209 |
if (special_exception(thread, file, line, h_name, NULL)) return; |
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210 |
// Create and throw exception |
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211 |
Handle h_loader(thread, NULL); |
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212 |
Handle h_prot(thread, NULL); |
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213 |
Handle h_cause(thread, NULL); |
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214 |
Handle exception = new_exception(thread, h_name, h_signature, args, h_cause, h_loader, h_prot); |
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215 |
_throw(thread, file, line, exception); |
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216 |
} |
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217 |
||
218 |
||
219 |
void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line) { |
|
220 |
Handle exception; |
|
221 |
if (!THREAD->has_pending_exception()) { |
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222 |
klassOop k = SystemDictionary::StackOverflowError_klass(); |
|
223 |
oop e = instanceKlass::cast(k)->allocate_instance(CHECK); |
|
224 |
exception = Handle(THREAD, e); // fill_in_stack trace does gc |
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assert(instanceKlass::cast(k)->is_initialized(), "need to increase min_stack_allowed calculation"); |
1 | 226 |
if (StackTraceInThrowable) { |
227 |
java_lang_Throwable::fill_in_stack_trace(exception); |
|
228 |
} |
|
229 |
} else { |
|
230 |
// if prior exception, throw that one instead |
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231 |
exception = Handle(THREAD, THREAD->pending_exception()); |
|
232 |
} |
|
233 |
_throw_oop(THREAD, file, line, exception()); |
|
234 |
} |
|
235 |
||
236 |
void Exceptions::fthrow(Thread* thread, const char* file, int line, symbolHandle h_name, const char* format, ...) { |
|
237 |
const int max_msg_size = 1024; |
|
238 |
va_list ap; |
|
239 |
va_start(ap, format); |
|
240 |
char msg[max_msg_size]; |
|
241 |
vsnprintf(msg, max_msg_size, format, ap); |
|
242 |
msg[max_msg_size-1] = '\0'; |
|
243 |
va_end(ap); |
|
244 |
_throw_msg(thread, file, line, h_name, msg); |
|
245 |
} |
|
246 |
||
247 |
// Creates an exception oop, calls the <init> method with the given signature. |
|
248 |
// and returns a Handle |
|
249 |
// Initializes the cause if cause non-null |
|
250 |
Handle Exceptions::new_exception(Thread *thread, symbolHandle h_name, |
|
251 |
symbolHandle signature, |
|
252 |
JavaCallArguments *args, |
|
253 |
Handle h_cause, Handle h_loader, |
|
254 |
Handle h_protection_domain) { |
|
255 |
assert(Universe::is_fully_initialized(), |
|
256 |
"cannot be called during initialization"); |
|
257 |
assert(thread->is_Java_thread(), "can only be called by a Java thread"); |
|
258 |
assert(!thread->has_pending_exception(), "already has exception"); |
|
259 |
||
260 |
Handle h_exception; |
|
261 |
||
262 |
// Resolve exception klass |
|
263 |
klassOop ik = SystemDictionary::resolve_or_fail(h_name, h_loader, h_protection_domain, true, thread); |
|
264 |
instanceKlassHandle klass (thread, ik); |
|
265 |
||
266 |
if (!thread->has_pending_exception()) { |
|
267 |
assert(klass.not_null(), "klass must exist"); |
|
268 |
// We are about to create an instance - so make sure that klass is initialized |
|
269 |
klass->initialize(thread); |
|
270 |
if (!thread->has_pending_exception()) { |
|
271 |
// Allocate new exception |
|
272 |
h_exception = klass->allocate_instance_handle(thread); |
|
273 |
if (!thread->has_pending_exception()) { |
|
274 |
JavaValue result(T_VOID); |
|
275 |
args->set_receiver(h_exception); |
|
276 |
// Call constructor |
|
277 |
JavaCalls::call_special(&result, klass, |
|
278 |
vmSymbolHandles::object_initializer_name(), |
|
279 |
signature, |
|
280 |
args, |
|
281 |
thread); |
|
282 |
||
283 |
} |
|
284 |
} |
|
285 |
||
286 |
// Future: object initializer should take a cause argument |
|
287 |
if (h_cause() != NULL) { |
|
4571 | 288 |
assert(h_cause->is_a(SystemDictionary::Throwable_klass()), |
1 | 289 |
"exception cause is not a subclass of java/lang/Throwable"); |
290 |
JavaValue result1(T_OBJECT); |
|
291 |
JavaCallArguments args1; |
|
292 |
args1.set_receiver(h_exception); |
|
293 |
args1.push_oop(h_cause); |
|
294 |
JavaCalls::call_virtual(&result1, klass, |
|
295 |
vmSymbolHandles::initCause_name(), |
|
296 |
vmSymbolHandles::throwable_throwable_signature(), |
|
297 |
&args1, |
|
298 |
thread); |
|
299 |
} |
|
300 |
} |
|
301 |
||
302 |
// Check if another exception was thrown in the process, if so rethrow that one |
|
303 |
if (thread->has_pending_exception()) { |
|
304 |
h_exception = Handle(thread, thread->pending_exception()); |
|
305 |
thread->clear_pending_exception(); |
|
306 |
} |
|
307 |
return h_exception; |
|
308 |
} |
|
309 |
||
310 |
// Convenience method. Calls either the <init>() or <init>(String) method when |
|
311 |
// creating a new exception |
|
312 |
Handle Exceptions::new_exception(Thread* thread, symbolHandle h_name, |
|
313 |
const char* message, Handle h_cause, |
|
314 |
Handle h_loader, |
|
315 |
Handle h_protection_domain, |
|
316 |
ExceptionMsgToUtf8Mode to_utf8_safe) { |
|
317 |
JavaCallArguments args; |
|
318 |
symbolHandle signature; |
|
319 |
if (message == NULL) { |
|
320 |
signature = vmSymbolHandles::void_method_signature(); |
|
321 |
} else { |
|
322 |
// We want to allocate storage, but we can't do that if there's |
|
323 |
// a pending exception, so we preserve any pending exception |
|
324 |
// around the allocation. |
|
325 |
// If we get an exception from the allocation, prefer that to |
|
326 |
// the exception we are trying to build, or the pending exception. |
|
327 |
// This is sort of like what PRESERVE_EXCEPTION_MARK does, except |
|
328 |
// for the preferencing and the early returns. |
|
329 |
Handle incoming_exception (thread, NULL); |
|
330 |
if (thread->has_pending_exception()) { |
|
331 |
incoming_exception = Handle(thread, thread->pending_exception()); |
|
332 |
thread->clear_pending_exception(); |
|
333 |
} |
|
334 |
Handle msg; |
|
335 |
if (to_utf8_safe == safe_to_utf8) { |
|
336 |
// Make a java UTF8 string. |
|
337 |
msg = java_lang_String::create_from_str(message, thread); |
|
338 |
} else { |
|
339 |
// Make a java string keeping the encoding scheme of the original string. |
|
340 |
msg = java_lang_String::create_from_platform_dependent_str(message, thread); |
|
341 |
} |
|
342 |
if (thread->has_pending_exception()) { |
|
343 |
Handle exception(thread, thread->pending_exception()); |
|
344 |
thread->clear_pending_exception(); |
|
345 |
return exception; |
|
346 |
} |
|
347 |
if (incoming_exception.not_null()) { |
|
348 |
return incoming_exception; |
|
349 |
} |
|
350 |
args.push_oop(msg); |
|
351 |
signature = vmSymbolHandles::string_void_signature(); |
|
352 |
} |
|
353 |
return new_exception(thread, h_name, signature, &args, h_cause, h_loader, h_protection_domain); |
|
354 |
} |
|
355 |
||
356 |
// Another convenience method that creates handles for null class loaders and |
|
357 |
// protection domains and null causes. |
|
358 |
// If the last parameter 'to_utf8_mode' is safe_to_utf8, |
|
359 |
// it means we can safely ignore the encoding scheme of the message string and |
|
360 |
// convert it directly to a java UTF8 string. Otherwise, we need to take the |
|
361 |
// encoding scheme of the string into account. One thing we should do at some |
|
362 |
// point is to push this flag down to class java_lang_String since other |
|
363 |
// classes may need similar functionalities. |
|
364 |
Handle Exceptions::new_exception(Thread* thread, |
|
365 |
symbolOop name, |
|
366 |
const char* message, |
|
367 |
ExceptionMsgToUtf8Mode to_utf8_safe) { |
|
368 |
||
369 |
symbolHandle h_name(thread, name); |
|
370 |
Handle h_loader(thread, NULL); |
|
371 |
Handle h_prot(thread, NULL); |
|
372 |
Handle h_cause(thread, NULL); |
|
373 |
return Exceptions::new_exception(thread, h_name, message, h_cause, h_loader, |
|
374 |
h_prot, to_utf8_safe); |
|
375 |
} |
|
376 |
||
377 |
// Implementation of ExceptionMark |
|
378 |
||
379 |
ExceptionMark::ExceptionMark(Thread*& thread) { |
|
380 |
thread = Thread::current(); |
|
381 |
_thread = thread; |
|
382 |
if (_thread->has_pending_exception()) { |
|
383 |
oop exception = _thread->pending_exception(); |
|
384 |
_thread->clear_pending_exception(); // Needed to avoid infinite recursion |
|
385 |
exception->print(); |
|
386 |
fatal("ExceptionMark constructor expects no pending exceptions"); |
|
387 |
} |
|
388 |
} |
|
389 |
||
390 |
||
391 |
ExceptionMark::~ExceptionMark() { |
|
392 |
if (_thread->has_pending_exception()) { |
|
393 |
Handle exception(_thread, _thread->pending_exception()); |
|
394 |
_thread->clear_pending_exception(); // Needed to avoid infinite recursion |
|
395 |
if (is_init_completed()) { |
|
396 |
exception->print(); |
|
397 |
fatal("ExceptionMark destructor expects no pending exceptions"); |
|
398 |
} else { |
|
399 |
vm_exit_during_initialization(exception); |
|
400 |
} |
|
401 |
} |
|
402 |
} |
|
403 |
||
404 |
// ---------------------------------------------------------------------------------------- |
|
405 |
||
406 |
#ifndef PRODUCT |
|
407 |
// caller frees value_string if necessary |
|
6179
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
408 |
void Exceptions::debug_check_abort(const char *value_string, const char* message) { |
1 | 409 |
if (AbortVMOnException != NULL && value_string != NULL && |
410 |
strstr(value_string, AbortVMOnException)) { |
|
6179
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
411 |
if (AbortVMOnExceptionMessage == NULL || message == NULL || |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
412 |
strcmp(message, AbortVMOnExceptionMessage) == 0) { |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
413 |
fatal(err_msg("Saw %s, aborting", value_string)); |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
414 |
} |
1 | 415 |
} |
416 |
} |
|
417 |
||
6179
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
418 |
void Exceptions::debug_check_abort(Handle exception, const char* message) { |
1 | 419 |
if (AbortVMOnException != NULL) { |
420 |
ResourceMark rm; |
|
6179
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
421 |
if (message == NULL && exception->is_a(SystemDictionary::Throwable_klass())) { |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
422 |
oop msg = java_lang_Throwable::message(exception); |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
423 |
if (msg != NULL) { |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
424 |
message = java_lang_String::as_utf8_string(msg); |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
425 |
} |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
426 |
} |
4846648c4b7b
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
5547
diff
changeset
|
427 |
debug_check_abort(instanceKlass::cast(exception()->klass())->external_name(), message); |
1 | 428 |
} |
429 |
} |
|
430 |
#endif |