author | jcoomes |
Thu, 22 Apr 2010 13:23:15 -0700 | |
changeset 5403 | 6b0dd9c75dde |
parent 4571 | 80b553bddc26 |
child 5547 | f4b087cbb361 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright 1998-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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* |
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*/ |
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#include "incls/_precompiled.incl" |
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#include "incls/_exceptions.cpp.incl" |
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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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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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if (!Universe::is_fully_initialized()) { |
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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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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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||
4014
b59b8c387950
6889302: TraceExceptions output should include detail message
never
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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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6889302: TraceExceptions output should include detail message
never
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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)); |
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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("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); |
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} |
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// Throw an exception with a message and a cause |
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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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// 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 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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// This version creates handles and calls the other version |
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void Exceptions::_throw_msg(Thread* thread, const char* file, int line, |
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symbolOop name, const char* message) { |
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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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} |
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// 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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symbolHandle name, const char* message) { |
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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, name, message, h_loader, h_protection_domain); |
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} |
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// This version already has a handle for name |
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void Exceptions::_throw_msg_cause(Thread* thread, const char* file, int line, |
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symbolHandle name, const char* message, Handle cause) { |
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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_cause(thread, file, line, name, message, cause, h_loader, h_protection_domain); |
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} |
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void Exceptions::_throw_args(Thread* thread, const char* file, int line, symbolHandle h_name, symbolHandle h_signature, JavaCallArguments *args) { |
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// Check for special boot-strapping/vm-thread handling |
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if (special_exception(thread, file, line, h_name, NULL)) return; |
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// Create and throw exception |
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Handle h_loader(thread, NULL); |
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Handle h_prot(thread, NULL); |
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Handle h_cause(thread, NULL); |
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Handle exception = new_exception(thread, h_name, h_signature, args, h_cause, h_loader, h_prot); |
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_throw(thread, file, line, exception); |
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} |
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void Exceptions::throw_stack_overflow_exception(Thread* THREAD, const char* file, int line) { |
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Handle exception; |
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if (!THREAD->has_pending_exception()) { |
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klassOop k = SystemDictionary::StackOverflowError_klass(); |
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oop e = instanceKlass::cast(k)->allocate_instance(CHECK); |
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exception = Handle(THREAD, e); // fill_in_stack trace does gc |
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if (StackTraceInThrowable) { |
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java_lang_Throwable::fill_in_stack_trace(exception); |
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} |
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} else { |
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// if prior exception, throw that one instead |
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exception = Handle(THREAD, THREAD->pending_exception()); |
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} |
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_throw_oop(THREAD, file, line, exception()); |
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} |
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void Exceptions::fthrow(Thread* thread, const char* file, int line, symbolHandle h_name, const char* format, ...) { |
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const int max_msg_size = 1024; |
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va_list ap; |
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va_start(ap, format); |
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char msg[max_msg_size]; |
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vsnprintf(msg, max_msg_size, format, ap); |
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msg[max_msg_size-1] = '\0'; |
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va_end(ap); |
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_throw_msg(thread, file, line, h_name, msg); |
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} |
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// Creates an exception oop, calls the <init> method with the given signature. |
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// and returns a Handle |
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// Initializes the cause if cause non-null |
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Handle Exceptions::new_exception(Thread *thread, symbolHandle h_name, |
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symbolHandle signature, |
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JavaCallArguments *args, |
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Handle h_cause, Handle h_loader, |
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Handle h_protection_domain) { |
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assert(Universe::is_fully_initialized(), |
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"cannot be called during initialization"); |
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assert(thread->is_Java_thread(), "can only be called by a Java thread"); |
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assert(!thread->has_pending_exception(), "already has exception"); |
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Handle h_exception; |
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// Resolve exception klass |
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klassOop ik = SystemDictionary::resolve_or_fail(h_name, h_loader, h_protection_domain, true, thread); |
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instanceKlassHandle klass (thread, ik); |
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if (!thread->has_pending_exception()) { |
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assert(klass.not_null(), "klass must exist"); |
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// We are about to create an instance - so make sure that klass is initialized |
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klass->initialize(thread); |
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if (!thread->has_pending_exception()) { |
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// Allocate new exception |
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h_exception = klass->allocate_instance_handle(thread); |
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if (!thread->has_pending_exception()) { |
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JavaValue result(T_VOID); |
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args->set_receiver(h_exception); |
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// Call constructor |
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JavaCalls::call_special(&result, klass, |
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vmSymbolHandles::object_initializer_name(), |
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signature, |
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args, |
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thread); |
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||
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} |
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} |
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// Future: object initializer should take a cause argument |
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if (h_cause() != NULL) { |
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4571 | 258 |
assert(h_cause->is_a(SystemDictionary::Throwable_klass()), |
1 | 259 |
"exception cause is not a subclass of java/lang/Throwable"); |
260 |
JavaValue result1(T_OBJECT); |
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JavaCallArguments args1; |
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args1.set_receiver(h_exception); |
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args1.push_oop(h_cause); |
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JavaCalls::call_virtual(&result1, klass, |
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vmSymbolHandles::initCause_name(), |
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vmSymbolHandles::throwable_throwable_signature(), |
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&args1, |
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thread); |
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} |
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} |
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||
272 |
// Check if another exception was thrown in the process, if so rethrow that one |
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if (thread->has_pending_exception()) { |
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h_exception = Handle(thread, thread->pending_exception()); |
|
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thread->clear_pending_exception(); |
|
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} |
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return h_exception; |
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} |
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||
280 |
// Convenience method. Calls either the <init>() or <init>(String) method when |
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// creating a new exception |
|
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Handle Exceptions::new_exception(Thread* thread, symbolHandle h_name, |
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const char* message, Handle h_cause, |
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Handle h_loader, |
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Handle h_protection_domain, |
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ExceptionMsgToUtf8Mode to_utf8_safe) { |
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JavaCallArguments args; |
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symbolHandle signature; |
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if (message == NULL) { |
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signature = vmSymbolHandles::void_method_signature(); |
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} else { |
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// We want to allocate storage, but we can't do that if there's |
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// a pending exception, so we preserve any pending exception |
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// around the allocation. |
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// If we get an exception from the allocation, prefer that to |
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// the exception we are trying to build, or the pending exception. |
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// This is sort of like what PRESERVE_EXCEPTION_MARK does, except |
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// for the preferencing and the early returns. |
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Handle incoming_exception (thread, NULL); |
|
300 |
if (thread->has_pending_exception()) { |
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301 |
incoming_exception = Handle(thread, thread->pending_exception()); |
|
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thread->clear_pending_exception(); |
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} |
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Handle msg; |
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305 |
if (to_utf8_safe == safe_to_utf8) { |
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// Make a java UTF8 string. |
|
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msg = java_lang_String::create_from_str(message, thread); |
|
308 |
} else { |
|
309 |
// Make a java string keeping the encoding scheme of the original string. |
|
310 |
msg = java_lang_String::create_from_platform_dependent_str(message, thread); |
|
311 |
} |
|
312 |
if (thread->has_pending_exception()) { |
|
313 |
Handle exception(thread, thread->pending_exception()); |
|
314 |
thread->clear_pending_exception(); |
|
315 |
return exception; |
|
316 |
} |
|
317 |
if (incoming_exception.not_null()) { |
|
318 |
return incoming_exception; |
|
319 |
} |
|
320 |
args.push_oop(msg); |
|
321 |
signature = vmSymbolHandles::string_void_signature(); |
|
322 |
} |
|
323 |
return new_exception(thread, h_name, signature, &args, h_cause, h_loader, h_protection_domain); |
|
324 |
} |
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325 |
||
326 |
// Another convenience method that creates handles for null class loaders and |
|
327 |
// protection domains and null causes. |
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328 |
// If the last parameter 'to_utf8_mode' is safe_to_utf8, |
|
329 |
// it means we can safely ignore the encoding scheme of the message string and |
|
330 |
// convert it directly to a java UTF8 string. Otherwise, we need to take the |
|
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// encoding scheme of the string into account. One thing we should do at some |
|
332 |
// point is to push this flag down to class java_lang_String since other |
|
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// classes may need similar functionalities. |
|
334 |
Handle Exceptions::new_exception(Thread* thread, |
|
335 |
symbolOop name, |
|
336 |
const char* message, |
|
337 |
ExceptionMsgToUtf8Mode to_utf8_safe) { |
|
338 |
||
339 |
symbolHandle h_name(thread, name); |
|
340 |
Handle h_loader(thread, NULL); |
|
341 |
Handle h_prot(thread, NULL); |
|
342 |
Handle h_cause(thread, NULL); |
|
343 |
return Exceptions::new_exception(thread, h_name, message, h_cause, h_loader, |
|
344 |
h_prot, to_utf8_safe); |
|
345 |
} |
|
346 |
||
347 |
// Implementation of ExceptionMark |
|
348 |
||
349 |
ExceptionMark::ExceptionMark(Thread*& thread) { |
|
350 |
thread = Thread::current(); |
|
351 |
_thread = thread; |
|
352 |
if (_thread->has_pending_exception()) { |
|
353 |
oop exception = _thread->pending_exception(); |
|
354 |
_thread->clear_pending_exception(); // Needed to avoid infinite recursion |
|
355 |
exception->print(); |
|
356 |
fatal("ExceptionMark constructor expects no pending exceptions"); |
|
357 |
} |
|
358 |
} |
|
359 |
||
360 |
||
361 |
ExceptionMark::~ExceptionMark() { |
|
362 |
if (_thread->has_pending_exception()) { |
|
363 |
Handle exception(_thread, _thread->pending_exception()); |
|
364 |
_thread->clear_pending_exception(); // Needed to avoid infinite recursion |
|
365 |
if (is_init_completed()) { |
|
366 |
exception->print(); |
|
367 |
fatal("ExceptionMark destructor expects no pending exceptions"); |
|
368 |
} else { |
|
369 |
vm_exit_during_initialization(exception); |
|
370 |
} |
|
371 |
} |
|
372 |
} |
|
373 |
||
374 |
// ---------------------------------------------------------------------------------------- |
|
375 |
||
376 |
#ifndef PRODUCT |
|
377 |
// caller frees value_string if necessary |
|
378 |
void Exceptions::debug_check_abort(const char *value_string) { |
|
379 |
if (AbortVMOnException != NULL && value_string != NULL && |
|
380 |
strstr(value_string, AbortVMOnException)) { |
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|
381 |
fatal(err_msg("Saw %s, aborting", value_string)); |
1 | 382 |
} |
383 |
} |
|
384 |
||
385 |
void Exceptions::debug_check_abort(Handle exception) { |
|
386 |
if (AbortVMOnException != NULL) { |
|
387 |
ResourceMark rm; |
|
388 |
debug_check_abort(instanceKlass::cast(exception()->klass())->external_name()); |
|
389 |
} |
|
390 |
} |
|
391 |
#endif |