author | stefank |
Tue, 27 Nov 2012 14:20:21 +0100 | |
changeset 14583 | d70ee55535f4 |
parent 13728 | 882756847a04 |
child 19158 | 9c755bf7cae5 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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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. |
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* |
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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/thread.inline.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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// 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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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, Symbol* h_name, const char* message) { |
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// bootstrapping check |
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if (!Universe::is_fully_initialized()) { |
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if (h_name == 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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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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} |
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// 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"); |
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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_exception(thread, "Threw " INTPTR_FORMAT " at %s:%d", (address)h_exception(), file, line); |
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} |
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void Exceptions::_throw_msg(Thread* thread, const char* file, int line, Symbol* name, const char* message, |
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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, 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, 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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||
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void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause, |
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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, name, message)) return; |
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// Create and throw exception and init cause |
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Handle h_exception = new_exception(thread, name, message, h_cause, h_loader, h_protection_domain); |
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_throw(thread, file, line, h_exception, message); |
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} |
174 |
||
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void Exceptions::_throw_cause(Thread* thread, const char* file, int line, Symbol* name, Handle h_cause, |
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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_cause)) return; |
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// Create and throw exception |
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Handle h_exception = new_exception(thread, name, h_cause, h_loader, h_protection_domain); |
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_throw(thread, file, line, h_exception, NULL); |
1 | 182 |
} |
183 |
||
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184 |
void Exceptions::_throw_args(Thread* thread, const char* file, int line, Symbol* name, Symbol* signature, JavaCallArguments *args) { |
1 | 185 |
// Check for special boot-strapping/vm-thread handling |
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186 |
if (special_exception(thread, file, line, name, NULL)) return; |
1 | 187 |
// Create and throw exception |
188 |
Handle h_loader(thread, NULL); |
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189 |
Handle h_prot(thread, NULL); |
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190 |
Handle exception = new_exception(thread, name, signature, args, h_loader, h_prot); |
1 | 191 |
_throw(thread, file, line, exception); |
192 |
} |
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193 |
||
194 |
||
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// Methods for default parameters. |
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// NOTE: These must be here (and not in the header file) because of include circularities. |
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void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, Symbol* name, const char* message, Handle h_cause) { |
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_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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_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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void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line, methodHandle method) { |
1 | 209 |
Handle exception; |
210 |
if (!THREAD->has_pending_exception()) { |
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Klass* k = SystemDictionary::StackOverflowError_klass(); |
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oop e = InstanceKlass::cast(k)->allocate_instance(CHECK); |
1 | 213 |
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 | 215 |
if (StackTraceInThrowable) { |
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216 |
java_lang_Throwable::fill_in_stack_trace(exception, method()); |
1 | 217 |
} |
218 |
} else { |
|
219 |
// if prior exception, throw that one instead |
|
220 |
exception = Handle(THREAD, THREAD->pending_exception()); |
|
221 |
} |
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_throw(THREAD, file, line, exception); |
1 | 223 |
} |
224 |
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225 |
void Exceptions::fthrow(Thread* thread, const char* file, int line, Symbol* h_name, const char* format, ...) { |
1 | 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) { |
1 | 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); |
1 | 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(), |
1 | 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 |
|
1 | 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, |
1 | 332 |
const char* message, Handle h_cause, |
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|
333 |
Handle h_loader, Handle h_protection_domain, |
1 | 334 |
ExceptionMsgToUtf8Mode to_utf8_safe) { |
335 |
JavaCallArguments args; |
|
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|
336 |
Symbol* signature = NULL; |
1 | 337 |
if (message == NULL) { |
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|
338 |
signature = vmSymbols::void_method_signature(); |
1 | 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); |
1 | 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(); |
1 | 370 |
} |
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|
371 |
return new_exception(thread, name, signature, &args, h_cause, h_loader, h_protection_domain); |
1 | 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, |
1 | 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, |
1 | 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) { |
1 | 425 |
if (AbortVMOnException != NULL && value_string != NULL && |
426 |
strstr(value_string, AbortVMOnException)) { |
|
6179
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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 |
} |
1 | 431 |
} |
432 |
} |
|
433 |
||
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|
434 |
void Exceptions::debug_check_abort(Handle exception, const char* message) { |
1 | 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); |
1 | 444 |
} |
445 |
} |
|
446 |
#endif |