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/*
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* Copyright 1997-2007 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/_interpreterRuntime.cpp.incl"
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class UnlockFlagSaver {
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private:
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JavaThread* _thread;
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bool _do_not_unlock;
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public:
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UnlockFlagSaver(JavaThread* t) {
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_thread = t;
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_do_not_unlock = t->do_not_unlock_if_synchronized();
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t->set_do_not_unlock_if_synchronized(false);
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}
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~UnlockFlagSaver() {
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_thread->set_do_not_unlock_if_synchronized(_do_not_unlock);
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}
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};
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//------------------------------------------------------------------------------------------------------------------------
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// State accessors
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void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) {
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last_frame(thread).interpreter_frame_set_bcp(bcp);
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if (ProfileInterpreter) {
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// ProfileTraps uses MDOs independently of ProfileInterpreter.
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// That is why we must check both ProfileInterpreter and mdo != NULL.
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methodDataOop mdo = last_frame(thread).interpreter_frame_method()->method_data();
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if (mdo != NULL) {
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NEEDS_CLEANUP;
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last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci()));
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}
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}
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}
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//------------------------------------------------------------------------------------------------------------------------
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// Constants
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IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide))
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// access constant pool
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constantPoolOop pool = method(thread)->constants();
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int index = wide ? two_byte_index(thread) : one_byte_index(thread);
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constantTag tag = pool->tag_at(index);
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if (tag.is_unresolved_klass() || tag.is_klass()) {
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klassOop klass = pool->klass_at(index, CHECK);
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oop java_class = klass->klass_part()->java_mirror();
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thread->set_vm_result(java_class);
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} else {
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#ifdef ASSERT
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// If we entered this runtime routine, we believed the tag contained
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// an unresolved string, an unresolved class or a resolved class.
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// However, another thread could have resolved the unresolved string
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// or class by the time we go there.
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assert(tag.is_unresolved_string()|| tag.is_string(), "expected string");
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#endif
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oop s_oop = pool->string_at(index, CHECK);
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thread->set_vm_result(s_oop);
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}
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IRT_END
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//------------------------------------------------------------------------------------------------------------------------
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// Allocation
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IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, constantPoolOopDesc* pool, int index))
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klassOop k_oop = pool->klass_at(index, CHECK);
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instanceKlassHandle klass (THREAD, k_oop);
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// Make sure we are not instantiating an abstract klass
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klass->check_valid_for_instantiation(true, CHECK);
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// Make sure klass is initialized
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klass->initialize(CHECK);
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// At this point the class may not be fully initialized
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// because of recursive initialization. If it is fully
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// initialized & has_finalized is not set, we rewrite
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// it into its fast version (Note: no locking is needed
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// here since this is an atomic byte write and can be
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// done more than once).
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//
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// Note: In case of classes with has_finalized we don't
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// rewrite since that saves us an extra check in
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// the fast version which then would call the
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// slow version anyway (and do a call back into
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// Java).
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// If we have a breakpoint, then we don't rewrite
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// because the _breakpoint bytecode would be lost.
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oop obj = klass->allocate_instance(CHECK);
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thread->set_vm_result(obj);
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IRT_END
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IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size))
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oop obj = oopFactory::new_typeArray(type, size, CHECK);
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thread->set_vm_result(obj);
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IRT_END
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IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, constantPoolOopDesc* pool, int index, jint size))
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// Note: no oopHandle for pool & klass needed since they are not used
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// anymore after new_objArray() and no GC can happen before.
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// (This may have to change if this code changes!)
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klassOop klass = pool->klass_at(index, CHECK);
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objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);
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thread->set_vm_result(obj);
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IRT_END
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IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address))
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// We may want to pass in more arguments - could make this slightly faster
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constantPoolOop constants = method(thread)->constants();
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int i = two_byte_index(thread);
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klassOop klass = constants->klass_at(i, CHECK);
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int nof_dims = number_of_dimensions(thread);
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assert(oop(klass)->is_klass(), "not a class");
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assert(nof_dims >= 1, "multianewarray rank must be nonzero");
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// We must create an array of jints to pass to multi_allocate.
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ResourceMark rm(thread);
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const int small_dims = 10;
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jint dim_array[small_dims];
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jint *dims = &dim_array[0];
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if (nof_dims > small_dims) {
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dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims);
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}
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for (int index = 0; index < nof_dims; index++) {
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// offset from first_size_address is addressed as local[index]
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int n = Interpreter::local_offset_in_bytes(index)/jintSize;
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dims[index] = first_size_address[n];
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}
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oop obj = arrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK);
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thread->set_vm_result(obj);
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IRT_END
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IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj))
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assert(obj->is_oop(), "must be a valid oop");
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assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");
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instanceKlass::register_finalizer(instanceOop(obj), CHECK);
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IRT_END
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// Quicken instance-of and check-cast bytecodes
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IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread))
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// Force resolving; quicken the bytecode
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int which = two_byte_index(thread);
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constantPoolOop cpool = method(thread)->constants();
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// We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded
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// program we might have seen an unquick'd bytecode in the interpreter but have another
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// thread quicken the bytecode before we get here.
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// assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" );
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klassOop klass = cpool->klass_at(which, CHECK);
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thread->set_vm_result(klass);
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IRT_END
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//------------------------------------------------------------------------------------------------------------------------
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// Exceptions
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// Assume the compiler is (or will be) interested in this event.
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// If necessary, create an MDO to hold the information, and record it.
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void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) {
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assert(ProfileTraps, "call me only if profiling");
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methodHandle trap_method(thread, method(thread));
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if (trap_method.not_null()) {
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methodDataHandle trap_mdo(thread, trap_method->method_data());
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if (trap_mdo.is_null()) {
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methodOopDesc::build_interpreter_method_data(trap_method, THREAD);
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if (HAS_PENDING_EXCEPTION) {
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assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here");
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CLEAR_PENDING_EXCEPTION;
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}
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trap_mdo = methodDataHandle(thread, trap_method->method_data());
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// and fall through...
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}
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if (trap_mdo.not_null()) {
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// Update per-method count of trap events. The interpreter
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// is updating the MDO to simulate the effect of compiler traps.
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int trap_bci = trap_method->bci_from(bcp(thread));
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Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason);
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}
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}
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}
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static Handle get_preinitialized_exception(klassOop k, TRAPS) {
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// get klass
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instanceKlass* klass = instanceKlass::cast(k);
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assert(klass->is_initialized(),
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"this klass should have been initialized during VM initialization");
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// create instance - do not call constructor since we may have no
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// (java) stack space left (should assert constructor is empty)
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Handle exception;
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oop exception_oop = klass->allocate_instance(CHECK_(exception));
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exception = Handle(THREAD, exception_oop);
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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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return exception;
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}
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// Special handling for stack overflow: since we don't have any (java) stack
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// space left we use the pre-allocated & pre-initialized StackOverflowError
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// klass to create an stack overflow error instance. We do not call its
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// constructor for the same reason (it is empty, anyway).
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IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread))
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Handle exception = get_preinitialized_exception(
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SystemDictionary::StackOverflowError_klass(),
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CHECK);
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THROW_HANDLE(exception);
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IRT_END
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IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message))
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// lookup exception klass
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symbolHandle s = oopFactory::new_symbol_handle(name, CHECK);
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if (ProfileTraps) {
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if (s == vmSymbols::java_lang_ArithmeticException()) {
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note_trap(thread, Deoptimization::Reason_div0_check, CHECK);
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} else if (s == vmSymbols::java_lang_NullPointerException()) {
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note_trap(thread, Deoptimization::Reason_null_check, CHECK);
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}
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}
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// create exception
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Handle exception = Exceptions::new_exception(thread, s(), message);
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thread->set_vm_result(exception());
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IRT_END
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IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj))
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ResourceMark rm(thread);
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const char* klass_name = Klass::cast(obj->klass())->external_name();
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// lookup exception klass
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symbolHandle s = oopFactory::new_symbol_handle(name, CHECK);
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if (ProfileTraps) {
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note_trap(thread, Deoptimization::Reason_class_check, CHECK);
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}
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// create exception, with klass name as detail message
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Handle exception = Exceptions::new_exception(thread, s(), klass_name);
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thread->set_vm_result(exception());
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IRT_END
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IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index))
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char message[jintAsStringSize];
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// lookup exception klass
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symbolHandle s = oopFactory::new_symbol_handle(name, CHECK);
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if (ProfileTraps) {
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note_trap(thread, Deoptimization::Reason_range_check, CHECK);
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}
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// create exception
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sprintf(message, "%d", index);
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THROW_MSG(s(), message);
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IRT_END
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IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException(
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JavaThread* thread, oopDesc* obj))
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ResourceMark rm(thread);
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char* message = SharedRuntime::generate_class_cast_message(
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thread, Klass::cast(obj->klass())->external_name());
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if (ProfileTraps) {
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note_trap(thread, Deoptimization::Reason_class_check, CHECK);
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}
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// create exception
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THROW_MSG(vmSymbols::java_lang_ClassCastException(), message);
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IRT_END
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// exception_handler_for_exception(...) returns the continuation address,
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// the exception oop (via TLS) and sets the bci/bcp for the continuation.
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// The exception oop is returned to make sure it is preserved over GC (it
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// is only on the stack if the exception was thrown explicitly via athrow).
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// During this operation, the expression stack contains the values for the
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// bci where the exception happened. If the exception was propagated back
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// from a call, the expression stack contains the values for the bci at the
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// invoke w/o arguments (i.e., as if one were inside the call).
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IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception))
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Handle h_exception(thread, exception);
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methodHandle h_method (thread, method(thread));
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constantPoolHandle h_constants(thread, h_method->constants());
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typeArrayHandle h_extable (thread, h_method->exception_table());
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bool should_repeat;
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int handler_bci;
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int current_bci = bcp(thread) - h_method->code_base();
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// Need to do this check first since when _do_not_unlock_if_synchronized
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// is set, we don't want to trigger any classloading which may make calls
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// into java, or surprisingly find a matching exception handler for bci 0
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// since at this moment the method hasn't been "officially" entered yet.
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if (thread->do_not_unlock_if_synchronized()) {
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ResourceMark rm;
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assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized");
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thread->set_vm_result(exception);
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#ifdef CC_INTERP
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return (address) -1;
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#else
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return Interpreter::remove_activation_entry();
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#endif
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}
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do {
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should_repeat = false;
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// assertions
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#ifdef ASSERT
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assert(h_exception.not_null(), "NULL exceptions should be handled by athrow");
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assert(h_exception->is_oop(), "just checking");
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// Check that exception is a subclass of Throwable, otherwise we have a VerifyError
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if (!(h_exception->is_a(SystemDictionary::throwable_klass()))) {
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if (ExitVMOnVerifyError) vm_exit(-1);
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ShouldNotReachHere();
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}
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#endif
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// tracing
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if (TraceExceptions) {
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ttyLocker ttyl;
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ResourceMark rm(thread);
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tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception());
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tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string());
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tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread);
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}
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// Don't go paging in something which won't be used.
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// else if (h_extable->length() == 0) {
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// // disabled for now - interpreter is not using shortcut yet
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// // (shortcut is not to call runtime if we have no exception handlers)
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// // warning("performance bug: should not call runtime if method has no exception handlers");
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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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// exception handler lookup
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KlassHandle h_klass(THREAD, h_exception->klass());
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handler_bci = h_method->fast_exception_handler_bci_for(h_klass, current_bci, THREAD);
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if (HAS_PENDING_EXCEPTION) {
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// We threw an exception while trying to find the exception handler.
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// Transfer the new exception to the exception handle which will
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// be set into thread local storage, and do another lookup for an
|
|
368 |
// exception handler for this exception, this time starting at the
|
|
369 |
// BCI of the exception handler which caused the exception to be
|
|
370 |
// thrown (bug 4307310).
|
|
371 |
h_exception = Handle(THREAD, PENDING_EXCEPTION);
|
|
372 |
CLEAR_PENDING_EXCEPTION;
|
|
373 |
if (handler_bci >= 0) {
|
|
374 |
current_bci = handler_bci;
|
|
375 |
should_repeat = true;
|
|
376 |
}
|
|
377 |
}
|
|
378 |
} while (should_repeat == true);
|
|
379 |
|
|
380 |
// notify JVMTI of an exception throw; JVMTI will detect if this is a first
|
|
381 |
// time throw or a stack unwinding throw and accordingly notify the debugger
|
|
382 |
if (JvmtiExport::can_post_exceptions()) {
|
|
383 |
JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception());
|
|
384 |
}
|
|
385 |
|
|
386 |
#ifdef CC_INTERP
|
|
387 |
address continuation = (address)(intptr_t) handler_bci;
|
|
388 |
#else
|
|
389 |
address continuation = NULL;
|
|
390 |
#endif
|
|
391 |
address handler_pc = NULL;
|
|
392 |
if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) {
|
|
393 |
// Forward exception to callee (leaving bci/bcp untouched) because (a) no
|
|
394 |
// handler in this method, or (b) after a stack overflow there is not yet
|
|
395 |
// enough stack space available to reprotect the stack.
|
|
396 |
#ifndef CC_INTERP
|
|
397 |
continuation = Interpreter::remove_activation_entry();
|
|
398 |
#endif
|
|
399 |
// Count this for compilation purposes
|
|
400 |
h_method->interpreter_throwout_increment();
|
|
401 |
} else {
|
|
402 |
// handler in this method => change bci/bcp to handler bci/bcp and continue there
|
|
403 |
handler_pc = h_method->code_base() + handler_bci;
|
|
404 |
#ifndef CC_INTERP
|
|
405 |
set_bcp_and_mdp(handler_pc, thread);
|
|
406 |
continuation = Interpreter::dispatch_table(vtos)[*handler_pc];
|
|
407 |
#endif
|
|
408 |
}
|
|
409 |
// notify debugger of an exception catch
|
|
410 |
// (this is good for exceptions caught in native methods as well)
|
|
411 |
if (JvmtiExport::can_post_exceptions()) {
|
|
412 |
JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL));
|
|
413 |
}
|
|
414 |
|
|
415 |
thread->set_vm_result(h_exception());
|
|
416 |
return continuation;
|
|
417 |
IRT_END
|
|
418 |
|
|
419 |
|
|
420 |
IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread))
|
|
421 |
assert(thread->has_pending_exception(), "must only ne called if there's an exception pending");
|
|
422 |
// nothing to do - eventually we should remove this code entirely (see comments @ call sites)
|
|
423 |
IRT_END
|
|
424 |
|
|
425 |
|
|
426 |
IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread))
|
|
427 |
THROW(vmSymbols::java_lang_AbstractMethodError());
|
|
428 |
IRT_END
|
|
429 |
|
|
430 |
|
|
431 |
IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread))
|
|
432 |
THROW(vmSymbols::java_lang_IncompatibleClassChangeError());
|
|
433 |
IRT_END
|
|
434 |
|
|
435 |
|
|
436 |
//------------------------------------------------------------------------------------------------------------------------
|
|
437 |
// Fields
|
|
438 |
//
|
|
439 |
|
|
440 |
IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode))
|
|
441 |
// resolve field
|
|
442 |
FieldAccessInfo info;
|
|
443 |
constantPoolHandle pool(thread, method(thread)->constants());
|
|
444 |
bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic);
|
|
445 |
|
|
446 |
{
|
|
447 |
JvmtiHideSingleStepping jhss(thread);
|
|
448 |
LinkResolver::resolve_field(info, pool, two_byte_index(thread),
|
|
449 |
bytecode, false, CHECK);
|
|
450 |
} // end JvmtiHideSingleStepping
|
|
451 |
|
|
452 |
// check if link resolution caused cpCache to be updated
|
|
453 |
if (already_resolved(thread)) return;
|
|
454 |
|
|
455 |
// compute auxiliary field attributes
|
|
456 |
TosState state = as_TosState(info.field_type());
|
|
457 |
|
|
458 |
// We need to delay resolving put instructions on final fields
|
|
459 |
// until we actually invoke one. This is required so we throw
|
|
460 |
// exceptions at the correct place. If we do not resolve completely
|
|
461 |
// in the current pass, leaving the put_code set to zero will
|
|
462 |
// cause the next put instruction to reresolve.
|
|
463 |
bool is_put = (bytecode == Bytecodes::_putfield ||
|
|
464 |
bytecode == Bytecodes::_putstatic);
|
|
465 |
Bytecodes::Code put_code = (Bytecodes::Code)0;
|
|
466 |
|
|
467 |
// We also need to delay resolving getstatic instructions until the
|
|
468 |
// class is intitialized. This is required so that access to the static
|
|
469 |
// field will call the initialization function every time until the class
|
|
470 |
// is completely initialized ala. in 2.17.5 in JVM Specification.
|
|
471 |
instanceKlass *klass = instanceKlass::cast(info.klass()->as_klassOop());
|
|
472 |
bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) &&
|
|
473 |
!klass->is_initialized());
|
|
474 |
Bytecodes::Code get_code = (Bytecodes::Code)0;
|
|
475 |
|
|
476 |
|
|
477 |
if (!uninitialized_static) {
|
|
478 |
get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield);
|
|
479 |
if (is_put || !info.access_flags().is_final()) {
|
|
480 |
put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield);
|
|
481 |
}
|
|
482 |
}
|
|
483 |
|
|
484 |
cache_entry(thread)->set_field(
|
|
485 |
get_code,
|
|
486 |
put_code,
|
|
487 |
info.klass(),
|
|
488 |
info.field_index(),
|
|
489 |
info.field_offset(),
|
|
490 |
state,
|
|
491 |
info.access_flags().is_final(),
|
|
492 |
info.access_flags().is_volatile()
|
|
493 |
);
|
|
494 |
IRT_END
|
|
495 |
|
|
496 |
|
|
497 |
//------------------------------------------------------------------------------------------------------------------------
|
|
498 |
// Synchronization
|
|
499 |
//
|
|
500 |
// The interpreter's synchronization code is factored out so that it can
|
|
501 |
// be shared by method invocation and synchronized blocks.
|
|
502 |
//%note synchronization_3
|
|
503 |
|
|
504 |
static void trace_locking(Handle& h_locking_obj, bool is_locking) {
|
|
505 |
ObjectSynchronizer::trace_locking(h_locking_obj, false, true, is_locking);
|
|
506 |
}
|
|
507 |
|
|
508 |
|
|
509 |
//%note monitor_1
|
|
510 |
IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem))
|
|
511 |
#ifdef ASSERT
|
|
512 |
thread->last_frame().interpreter_frame_verify_monitor(elem);
|
|
513 |
#endif
|
|
514 |
if (PrintBiasedLockingStatistics) {
|
|
515 |
Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
|
|
516 |
}
|
|
517 |
Handle h_obj(thread, elem->obj());
|
|
518 |
assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
|
|
519 |
"must be NULL or an object");
|
|
520 |
if (UseBiasedLocking) {
|
|
521 |
// Retry fast entry if bias is revoked to avoid unnecessary inflation
|
|
522 |
ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK);
|
|
523 |
} else {
|
|
524 |
ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK);
|
|
525 |
}
|
|
526 |
assert(Universe::heap()->is_in_reserved_or_null(elem->obj()),
|
|
527 |
"must be NULL or an object");
|
|
528 |
#ifdef ASSERT
|
|
529 |
thread->last_frame().interpreter_frame_verify_monitor(elem);
|
|
530 |
#endif
|
|
531 |
IRT_END
|
|
532 |
|
|
533 |
|
|
534 |
//%note monitor_1
|
|
535 |
IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem))
|
|
536 |
#ifdef ASSERT
|
|
537 |
thread->last_frame().interpreter_frame_verify_monitor(elem);
|
|
538 |
#endif
|
|
539 |
Handle h_obj(thread, elem->obj());
|
|
540 |
assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
|
|
541 |
"must be NULL or an object");
|
|
542 |
if (elem == NULL || h_obj()->is_unlocked()) {
|
|
543 |
THROW(vmSymbols::java_lang_IllegalMonitorStateException());
|
|
544 |
}
|
|
545 |
ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread);
|
|
546 |
// Free entry. This must be done here, since a pending exception might be installed on
|
|
547 |
// exit. If it is not cleared, the exception handling code will try to unlock the monitor again.
|
|
548 |
elem->set_obj(NULL);
|
|
549 |
#ifdef ASSERT
|
|
550 |
thread->last_frame().interpreter_frame_verify_monitor(elem);
|
|
551 |
#endif
|
|
552 |
IRT_END
|
|
553 |
|
|
554 |
|
|
555 |
IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread))
|
|
556 |
THROW(vmSymbols::java_lang_IllegalMonitorStateException());
|
|
557 |
IRT_END
|
|
558 |
|
|
559 |
|
|
560 |
IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread))
|
|
561 |
// Returns an illegal exception to install into the current thread. The
|
|
562 |
// pending_exception flag is cleared so normal exception handling does not
|
|
563 |
// trigger. Any current installed exception will be overwritten. This
|
|
564 |
// method will be called during an exception unwind.
|
|
565 |
|
|
566 |
assert(!HAS_PENDING_EXCEPTION, "no pending exception");
|
|
567 |
Handle exception(thread, thread->vm_result());
|
|
568 |
assert(exception() != NULL, "vm result should be set");
|
|
569 |
thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures)
|
|
570 |
if (!exception->is_a(SystemDictionary::threaddeath_klass())) {
|
|
571 |
exception = get_preinitialized_exception(
|
|
572 |
SystemDictionary::IllegalMonitorStateException_klass(),
|
|
573 |
CATCH);
|
|
574 |
}
|
|
575 |
thread->set_vm_result(exception());
|
|
576 |
IRT_END
|
|
577 |
|
|
578 |
|
|
579 |
//------------------------------------------------------------------------------------------------------------------------
|
|
580 |
// Invokes
|
|
581 |
|
|
582 |
IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp))
|
|
583 |
return method->orig_bytecode_at(method->bci_from(bcp));
|
|
584 |
IRT_END
|
|
585 |
|
|
586 |
IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp, Bytecodes::Code new_code))
|
|
587 |
method->set_orig_bytecode_at(method->bci_from(bcp), new_code);
|
|
588 |
IRT_END
|
|
589 |
|
|
590 |
IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, methodOopDesc* method, address bcp))
|
|
591 |
JvmtiExport::post_raw_breakpoint(thread, method, bcp);
|
|
592 |
IRT_END
|
|
593 |
|
|
594 |
IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode))
|
|
595 |
// extract receiver from the outgoing argument list if necessary
|
|
596 |
Handle receiver(thread, NULL);
|
|
597 |
if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) {
|
|
598 |
ResourceMark rm(thread);
|
|
599 |
methodHandle m (thread, method(thread));
|
|
600 |
int bci = m->bci_from(bcp(thread));
|
|
601 |
Bytecode_invoke* call = Bytecode_invoke_at(m, bci);
|
|
602 |
symbolHandle signature (thread, call->signature());
|
|
603 |
receiver = Handle(thread,
|
|
604 |
thread->last_frame().interpreter_callee_receiver(signature));
|
|
605 |
assert(Universe::heap()->is_in_reserved_or_null(receiver()),
|
|
606 |
"sanity check");
|
|
607 |
assert(receiver.is_null() ||
|
|
608 |
Universe::heap()->is_in_reserved(receiver->klass()),
|
|
609 |
"sanity check");
|
|
610 |
}
|
|
611 |
|
|
612 |
// resolve method
|
|
613 |
CallInfo info;
|
|
614 |
constantPoolHandle pool(thread, method(thread)->constants());
|
|
615 |
|
|
616 |
{
|
|
617 |
JvmtiHideSingleStepping jhss(thread);
|
|
618 |
LinkResolver::resolve_invoke(info, receiver, pool,
|
|
619 |
two_byte_index(thread), bytecode, CHECK);
|
|
620 |
if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
|
|
621 |
int retry_count = 0;
|
|
622 |
while (info.resolved_method()->is_old()) {
|
|
623 |
// It is very unlikely that method is redefined more than 100 times
|
|
624 |
// in the middle of resolve. If it is looping here more than 100 times
|
|
625 |
// means then there could be a bug here.
|
|
626 |
guarantee((retry_count++ < 100),
|
|
627 |
"Could not resolve to latest version of redefined method");
|
|
628 |
// method is redefined in the middle of resolve so re-try.
|
|
629 |
LinkResolver::resolve_invoke(info, receiver, pool,
|
|
630 |
two_byte_index(thread), bytecode, CHECK);
|
|
631 |
}
|
|
632 |
}
|
|
633 |
} // end JvmtiHideSingleStepping
|
|
634 |
|
|
635 |
// check if link resolution caused cpCache to be updated
|
|
636 |
if (already_resolved(thread)) return;
|
|
637 |
|
|
638 |
if (bytecode == Bytecodes::_invokeinterface) {
|
|
639 |
|
|
640 |
if (TraceItables && Verbose) {
|
|
641 |
ResourceMark rm(thread);
|
|
642 |
tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string());
|
|
643 |
}
|
|
644 |
if (info.resolved_method()->method_holder() ==
|
|
645 |
SystemDictionary::object_klass()) {
|
|
646 |
// NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec
|
|
647 |
// (see also cpCacheOop.cpp for details)
|
|
648 |
methodHandle rm = info.resolved_method();
|
|
649 |
assert(rm->is_final() || info.has_vtable_index(),
|
|
650 |
"should have been set already");
|
|
651 |
cache_entry(thread)->set_method(bytecode, rm, info.vtable_index());
|
|
652 |
} else {
|
|
653 |
// Setup itable entry
|
|
654 |
int index = klassItable::compute_itable_index(info.resolved_method()());
|
|
655 |
cache_entry(thread)->set_interface_call(info.resolved_method(), index);
|
|
656 |
}
|
|
657 |
} else {
|
|
658 |
cache_entry(thread)->set_method(
|
|
659 |
bytecode,
|
|
660 |
info.resolved_method(),
|
|
661 |
info.vtable_index());
|
|
662 |
}
|
|
663 |
IRT_END
|
|
664 |
|
|
665 |
|
|
666 |
//------------------------------------------------------------------------------------------------------------------------
|
|
667 |
// Miscellaneous
|
|
668 |
|
|
669 |
|
|
670 |
#ifndef PRODUCT
|
|
671 |
static void trace_frequency_counter_overflow(methodHandle m, int branch_bci, int bci, address branch_bcp) {
|
|
672 |
if (TraceInvocationCounterOverflow) {
|
|
673 |
InvocationCounter* ic = m->invocation_counter();
|
|
674 |
InvocationCounter* bc = m->backedge_counter();
|
|
675 |
ResourceMark rm;
|
|
676 |
const char* msg =
|
|
677 |
branch_bcp == NULL
|
|
678 |
? "comp-policy cntr ovfl @ %d in entry of "
|
|
679 |
: "comp-policy cntr ovfl @ %d in loop of ";
|
|
680 |
tty->print(msg, bci);
|
|
681 |
m->print_value();
|
|
682 |
tty->cr();
|
|
683 |
ic->print();
|
|
684 |
bc->print();
|
|
685 |
if (ProfileInterpreter) {
|
|
686 |
if (branch_bcp != NULL) {
|
|
687 |
methodDataOop mdo = m->method_data();
|
|
688 |
if (mdo != NULL) {
|
|
689 |
int count = mdo->bci_to_data(branch_bci)->as_JumpData()->taken();
|
|
690 |
tty->print_cr("back branch count = %d", count);
|
|
691 |
}
|
|
692 |
}
|
|
693 |
}
|
|
694 |
}
|
|
695 |
}
|
|
696 |
|
|
697 |
static void trace_osr_request(methodHandle method, nmethod* osr, int bci) {
|
|
698 |
if (TraceOnStackReplacement) {
|
|
699 |
ResourceMark rm;
|
|
700 |
tty->print(osr != NULL ? "Reused OSR entry for " : "Requesting OSR entry for ");
|
|
701 |
method->print_short_name(tty);
|
|
702 |
tty->print_cr(" at bci %d", bci);
|
|
703 |
}
|
|
704 |
}
|
|
705 |
#endif // !PRODUCT
|
|
706 |
|
|
707 |
IRT_ENTRY(nmethod*,
|
|
708 |
InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp))
|
|
709 |
// use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized
|
|
710 |
// flag, in case this method triggers classloading which will call into Java.
|
|
711 |
UnlockFlagSaver fs(thread);
|
|
712 |
|
|
713 |
frame fr = thread->last_frame();
|
|
714 |
assert(fr.is_interpreted_frame(), "must come from interpreter");
|
|
715 |
methodHandle method(thread, fr.interpreter_frame_method());
|
|
716 |
const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : 0;
|
|
717 |
const int bci = method->bci_from(fr.interpreter_frame_bcp());
|
|
718 |
NOT_PRODUCT(trace_frequency_counter_overflow(method, branch_bci, bci, branch_bcp);)
|
|
719 |
|
|
720 |
if (JvmtiExport::can_post_interpreter_events()) {
|
|
721 |
if (thread->is_interp_only_mode()) {
|
|
722 |
// If certain JVMTI events (e.g. frame pop event) are requested then the
|
|
723 |
// thread is forced to remain in interpreted code. This is
|
|
724 |
// implemented partly by a check in the run_compiled_code
|
|
725 |
// section of the interpreter whether we should skip running
|
|
726 |
// compiled code, and partly by skipping OSR compiles for
|
|
727 |
// interpreted-only threads.
|
|
728 |
if (branch_bcp != NULL) {
|
|
729 |
CompilationPolicy::policy()->reset_counter_for_back_branch_event(method);
|
|
730 |
return NULL;
|
|
731 |
}
|
|
732 |
}
|
|
733 |
}
|
|
734 |
|
|
735 |
if (branch_bcp == NULL) {
|
|
736 |
// when code cache is full, compilation gets switched off, UseCompiler
|
|
737 |
// is set to false
|
|
738 |
if (!method->has_compiled_code() && UseCompiler) {
|
|
739 |
CompilationPolicy::policy()->method_invocation_event(method, CHECK_NULL);
|
|
740 |
} else {
|
|
741 |
// Force counter overflow on method entry, even if no compilation
|
|
742 |
// happened. (The method_invocation_event call does this also.)
|
|
743 |
CompilationPolicy::policy()->reset_counter_for_invocation_event(method);
|
|
744 |
}
|
|
745 |
// compilation at an invocation overflow no longer goes and retries test for
|
|
746 |
// compiled method. We always run the loser of the race as interpreted.
|
|
747 |
// so return NULL
|
|
748 |
return NULL;
|
|
749 |
} else {
|
|
750 |
// counter overflow in a loop => try to do on-stack-replacement
|
|
751 |
nmethod* osr_nm = method->lookup_osr_nmethod_for(bci);
|
|
752 |
NOT_PRODUCT(trace_osr_request(method, osr_nm, bci);)
|
|
753 |
// when code cache is full, we should not compile any more...
|
|
754 |
if (osr_nm == NULL && UseCompiler) {
|
|
755 |
const int branch_bci = method->bci_from(branch_bcp);
|
|
756 |
CompilationPolicy::policy()->method_back_branch_event(method, branch_bci, bci, CHECK_NULL);
|
|
757 |
osr_nm = method->lookup_osr_nmethod_for(bci);
|
|
758 |
}
|
|
759 |
if (osr_nm == NULL) {
|
|
760 |
CompilationPolicy::policy()->reset_counter_for_back_branch_event(method);
|
|
761 |
return NULL;
|
|
762 |
} else {
|
|
763 |
// We may need to do on-stack replacement which requires that no
|
|
764 |
// monitors in the activation are biased because their
|
|
765 |
// BasicObjectLocks will need to migrate during OSR. Force
|
|
766 |
// unbiasing of all monitors in the activation now (even though
|
|
767 |
// the OSR nmethod might be invalidated) because we don't have a
|
|
768 |
// safepoint opportunity later once the migration begins.
|
|
769 |
if (UseBiasedLocking) {
|
|
770 |
ResourceMark rm;
|
|
771 |
GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>();
|
|
772 |
for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end();
|
|
773 |
kptr < fr.interpreter_frame_monitor_begin();
|
|
774 |
kptr = fr.next_monitor_in_interpreter_frame(kptr) ) {
|
|
775 |
if( kptr->obj() != NULL ) {
|
|
776 |
objects_to_revoke->append(Handle(THREAD, kptr->obj()));
|
|
777 |
}
|
|
778 |
}
|
|
779 |
BiasedLocking::revoke(objects_to_revoke);
|
|
780 |
}
|
|
781 |
|
|
782 |
return osr_nm;
|
|
783 |
}
|
|
784 |
}
|
|
785 |
IRT_END
|
|
786 |
|
|
787 |
IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(methodOopDesc* method, address cur_bcp))
|
|
788 |
assert(ProfileInterpreter, "must be profiling interpreter");
|
|
789 |
int bci = method->bci_from(cur_bcp);
|
|
790 |
methodDataOop mdo = method->method_data();
|
|
791 |
if (mdo == NULL) return 0;
|
|
792 |
return mdo->bci_to_di(bci);
|
|
793 |
IRT_END
|
|
794 |
|
|
795 |
IRT_ENTRY(jint, InterpreterRuntime::profile_method(JavaThread* thread, address cur_bcp))
|
|
796 |
// use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized
|
|
797 |
// flag, in case this method triggers classloading which will call into Java.
|
|
798 |
UnlockFlagSaver fs(thread);
|
|
799 |
|
|
800 |
assert(ProfileInterpreter, "must be profiling interpreter");
|
|
801 |
frame fr = thread->last_frame();
|
|
802 |
assert(fr.is_interpreted_frame(), "must come from interpreter");
|
|
803 |
methodHandle method(thread, fr.interpreter_frame_method());
|
|
804 |
int bci = method->bci_from(cur_bcp);
|
|
805 |
methodOopDesc::build_interpreter_method_data(method, THREAD);
|
|
806 |
if (HAS_PENDING_EXCEPTION) {
|
|
807 |
assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here");
|
|
808 |
CLEAR_PENDING_EXCEPTION;
|
|
809 |
// and fall through...
|
|
810 |
}
|
|
811 |
methodDataOop mdo = method->method_data();
|
|
812 |
if (mdo == NULL) return 0;
|
|
813 |
return mdo->bci_to_di(bci);
|
|
814 |
IRT_END
|
|
815 |
|
|
816 |
|
|
817 |
#ifdef ASSERT
|
|
818 |
IRT_LEAF(void, InterpreterRuntime::verify_mdp(methodOopDesc* method, address bcp, address mdp))
|
|
819 |
assert(ProfileInterpreter, "must be profiling interpreter");
|
|
820 |
|
|
821 |
methodDataOop mdo = method->method_data();
|
|
822 |
assert(mdo != NULL, "must not be null");
|
|
823 |
|
|
824 |
int bci = method->bci_from(bcp);
|
|
825 |
|
|
826 |
address mdp2 = mdo->bci_to_dp(bci);
|
|
827 |
if (mdp != mdp2) {
|
|
828 |
ResourceMark rm;
|
|
829 |
ResetNoHandleMark rnm; // In a LEAF entry.
|
|
830 |
HandleMark hm;
|
|
831 |
tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci);
|
|
832 |
int current_di = mdo->dp_to_di(mdp);
|
|
833 |
int expected_di = mdo->dp_to_di(mdp2);
|
|
834 |
tty->print_cr(" actual di %d expected di %d", current_di, expected_di);
|
|
835 |
int expected_approx_bci = mdo->data_at(expected_di)->bci();
|
|
836 |
int approx_bci = -1;
|
|
837 |
if (current_di >= 0) {
|
|
838 |
approx_bci = mdo->data_at(current_di)->bci();
|
|
839 |
}
|
|
840 |
tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci);
|
|
841 |
mdo->print_on(tty);
|
|
842 |
method->print_codes();
|
|
843 |
}
|
|
844 |
assert(mdp == mdp2, "wrong mdp");
|
|
845 |
IRT_END
|
|
846 |
#endif // ASSERT
|
|
847 |
|
|
848 |
IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci))
|
|
849 |
assert(ProfileInterpreter, "must be profiling interpreter");
|
|
850 |
ResourceMark rm(thread);
|
|
851 |
HandleMark hm(thread);
|
|
852 |
frame fr = thread->last_frame();
|
|
853 |
assert(fr.is_interpreted_frame(), "must come from interpreter");
|
|
854 |
methodDataHandle h_mdo(thread, fr.interpreter_frame_method()->method_data());
|
|
855 |
|
|
856 |
// Grab a lock to ensure atomic access to setting the return bci and
|
|
857 |
// the displacement. This can block and GC, invalidating all naked oops.
|
|
858 |
MutexLocker ml(RetData_lock);
|
|
859 |
|
|
860 |
// ProfileData is essentially a wrapper around a derived oop, so we
|
|
861 |
// need to take the lock before making any ProfileData structures.
|
|
862 |
ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp()));
|
|
863 |
RetData* rdata = data->as_RetData();
|
|
864 |
address new_mdp = rdata->fixup_ret(return_bci, h_mdo);
|
|
865 |
fr.interpreter_frame_set_mdp(new_mdp);
|
|
866 |
IRT_END
|
|
867 |
|
|
868 |
|
|
869 |
IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread))
|
|
870 |
// We used to need an explict preserve_arguments here for invoke bytecodes. However,
|
|
871 |
// stack traversal automatically takes care of preserving arguments for invoke, so
|
|
872 |
// this is no longer needed.
|
|
873 |
|
|
874 |
// IRT_END does an implicit safepoint check, hence we are guaranteed to block
|
|
875 |
// if this is called during a safepoint
|
|
876 |
|
|
877 |
if (JvmtiExport::should_post_single_step()) {
|
|
878 |
// We are called during regular safepoints and when the VM is
|
|
879 |
// single stepping. If any thread is marked for single stepping,
|
|
880 |
// then we may have JVMTI work to do.
|
|
881 |
JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread));
|
|
882 |
}
|
|
883 |
IRT_END
|
|
884 |
|
|
885 |
IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj,
|
|
886 |
ConstantPoolCacheEntry *cp_entry))
|
|
887 |
|
|
888 |
// check the access_flags for the field in the klass
|
|
889 |
instanceKlass* ik = instanceKlass::cast((klassOop)cp_entry->f1());
|
|
890 |
typeArrayOop fields = ik->fields();
|
|
891 |
int index = cp_entry->field_index();
|
|
892 |
assert(index < fields->length(), "holders field index is out of range");
|
|
893 |
// bail out if field accesses are not watched
|
|
894 |
if ((fields->ushort_at(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return;
|
|
895 |
|
|
896 |
switch(cp_entry->flag_state()) {
|
|
897 |
case btos: // fall through
|
|
898 |
case ctos: // fall through
|
|
899 |
case stos: // fall through
|
|
900 |
case itos: // fall through
|
|
901 |
case ftos: // fall through
|
|
902 |
case ltos: // fall through
|
|
903 |
case dtos: // fall through
|
|
904 |
case atos: break;
|
|
905 |
default: ShouldNotReachHere(); return;
|
|
906 |
}
|
|
907 |
bool is_static = (obj == NULL);
|
|
908 |
HandleMark hm(thread);
|
|
909 |
|
|
910 |
Handle h_obj;
|
|
911 |
if (!is_static) {
|
|
912 |
// non-static field accessors have an object, but we need a handle
|
|
913 |
h_obj = Handle(thread, obj);
|
|
914 |
}
|
|
915 |
instanceKlassHandle h_cp_entry_f1(thread, (klassOop)cp_entry->f1());
|
|
916 |
jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2(), is_static);
|
|
917 |
JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid);
|
|
918 |
IRT_END
|
|
919 |
|
|
920 |
IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread,
|
|
921 |
oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value))
|
|
922 |
|
|
923 |
klassOop k = (klassOop)cp_entry->f1();
|
|
924 |
|
|
925 |
// check the access_flags for the field in the klass
|
|
926 |
instanceKlass* ik = instanceKlass::cast(k);
|
|
927 |
typeArrayOop fields = ik->fields();
|
|
928 |
int index = cp_entry->field_index();
|
|
929 |
assert(index < fields->length(), "holders field index is out of range");
|
|
930 |
// bail out if field modifications are not watched
|
|
931 |
if ((fields->ushort_at(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return;
|
|
932 |
|
|
933 |
char sig_type = '\0';
|
|
934 |
|
|
935 |
switch(cp_entry->flag_state()) {
|
|
936 |
case btos: sig_type = 'Z'; break;
|
|
937 |
case ctos: sig_type = 'C'; break;
|
|
938 |
case stos: sig_type = 'S'; break;
|
|
939 |
case itos: sig_type = 'I'; break;
|
|
940 |
case ftos: sig_type = 'F'; break;
|
|
941 |
case atos: sig_type = 'L'; break;
|
|
942 |
case ltos: sig_type = 'J'; break;
|
|
943 |
case dtos: sig_type = 'D'; break;
|
|
944 |
default: ShouldNotReachHere(); return;
|
|
945 |
}
|
|
946 |
bool is_static = (obj == NULL);
|
|
947 |
|
|
948 |
HandleMark hm(thread);
|
|
949 |
instanceKlassHandle h_klass(thread, k);
|
|
950 |
jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2(), is_static);
|
|
951 |
jvalue fvalue;
|
|
952 |
#ifdef _LP64
|
|
953 |
fvalue = *value;
|
|
954 |
#else
|
|
955 |
// Long/double values are stored unaligned and also noncontiguously with
|
|
956 |
// tagged stacks. We can't just do a simple assignment even in the non-
|
|
957 |
// J/D cases because a C++ compiler is allowed to assume that a jvalue is
|
|
958 |
// 8-byte aligned, and interpreter stack slots are only 4-byte aligned.
|
|
959 |
// We assume that the two halves of longs/doubles are stored in interpreter
|
|
960 |
// stack slots in platform-endian order.
|
|
961 |
jlong_accessor u;
|
|
962 |
jint* newval = (jint*)value;
|
|
963 |
u.words[0] = newval[0];
|
|
964 |
u.words[1] = newval[Interpreter::stackElementWords()]; // skip if tag
|
|
965 |
fvalue.j = u.long_value;
|
|
966 |
#endif // _LP64
|
|
967 |
|
|
968 |
Handle h_obj;
|
|
969 |
if (!is_static) {
|
|
970 |
// non-static field accessors have an object, but we need a handle
|
|
971 |
h_obj = Handle(thread, obj);
|
|
972 |
}
|
|
973 |
|
|
974 |
JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj,
|
|
975 |
fid, sig_type, &fvalue);
|
|
976 |
IRT_END
|
|
977 |
|
|
978 |
IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread))
|
|
979 |
JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread));
|
|
980 |
IRT_END
|
|
981 |
|
|
982 |
|
|
983 |
IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread))
|
|
984 |
JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread));
|
|
985 |
IRT_END
|
|
986 |
|
|
987 |
IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc))
|
|
988 |
{
|
|
989 |
return (Interpreter::contains(pc) ? 1 : 0);
|
|
990 |
}
|
|
991 |
IRT_END
|
|
992 |
|
|
993 |
|
|
994 |
// Implementation of SignatureHandlerLibrary
|
|
995 |
|
|
996 |
address SignatureHandlerLibrary::set_handler_blob() {
|
|
997 |
BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size);
|
|
998 |
if (handler_blob == NULL) {
|
|
999 |
return NULL;
|
|
1000 |
}
|
|
1001 |
address handler = handler_blob->instructions_begin();
|
|
1002 |
_handler_blob = handler_blob;
|
|
1003 |
_handler = handler;
|
|
1004 |
return handler;
|
|
1005 |
}
|
|
1006 |
|
|
1007 |
void SignatureHandlerLibrary::initialize() {
|
|
1008 |
if (_fingerprints != NULL) {
|
|
1009 |
return;
|
|
1010 |
}
|
|
1011 |
if (set_handler_blob() == NULL) {
|
|
1012 |
vm_exit_out_of_memory(blob_size, "native signature handlers");
|
|
1013 |
}
|
|
1014 |
|
|
1015 |
BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer",
|
|
1016 |
SignatureHandlerLibrary::buffer_size);
|
|
1017 |
_buffer = bb->instructions_begin();
|
|
1018 |
|
|
1019 |
_fingerprints = new(ResourceObj::C_HEAP)GrowableArray<uint64_t>(32, true);
|
|
1020 |
_handlers = new(ResourceObj::C_HEAP)GrowableArray<address>(32, true);
|
|
1021 |
}
|
|
1022 |
|
|
1023 |
address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) {
|
|
1024 |
address handler = _handler;
|
|
1025 |
int code_size = buffer->pure_code_size();
|
|
1026 |
if (handler + code_size > _handler_blob->instructions_end()) {
|
|
1027 |
// get a new handler blob
|
|
1028 |
handler = set_handler_blob();
|
|
1029 |
}
|
|
1030 |
if (handler != NULL) {
|
|
1031 |
memcpy(handler, buffer->code_begin(), code_size);
|
|
1032 |
pd_set_handler(handler);
|
|
1033 |
ICache::invalidate_range(handler, code_size);
|
|
1034 |
_handler = handler + code_size;
|
|
1035 |
}
|
|
1036 |
return handler;
|
|
1037 |
}
|
|
1038 |
|
|
1039 |
void SignatureHandlerLibrary::add(methodHandle method) {
|
|
1040 |
if (method->signature_handler() == NULL) {
|
|
1041 |
// use slow signature handler if we can't do better
|
|
1042 |
int handler_index = -1;
|
|
1043 |
// check if we can use customized (fast) signature handler
|
|
1044 |
if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) {
|
|
1045 |
// use customized signature handler
|
|
1046 |
MutexLocker mu(SignatureHandlerLibrary_lock);
|
|
1047 |
// make sure data structure is initialized
|
|
1048 |
initialize();
|
|
1049 |
// lookup method signature's fingerprint
|
|
1050 |
uint64_t fingerprint = Fingerprinter(method).fingerprint();
|
|
1051 |
handler_index = _fingerprints->find(fingerprint);
|
|
1052 |
// create handler if necessary
|
|
1053 |
if (handler_index < 0) {
|
|
1054 |
ResourceMark rm;
|
|
1055 |
ptrdiff_t align_offset = (address)
|
|
1056 |
round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer;
|
|
1057 |
CodeBuffer buffer((address)(_buffer + align_offset),
|
|
1058 |
SignatureHandlerLibrary::buffer_size - align_offset);
|
|
1059 |
InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint);
|
|
1060 |
// copy into code heap
|
|
1061 |
address handler = set_handler(&buffer);
|
|
1062 |
if (handler == NULL) {
|
|
1063 |
// use slow signature handler
|
|
1064 |
} else {
|
|
1065 |
// debugging suppport
|
|
1066 |
if (PrintSignatureHandlers) {
|
|
1067 |
tty->cr();
|
|
1068 |
tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)",
|
|
1069 |
_handlers->length(),
|
|
1070 |
(method->is_static() ? "static" : "receiver"),
|
|
1071 |
method->name_and_sig_as_C_string(),
|
|
1072 |
fingerprint,
|
|
1073 |
buffer.code_size());
|
|
1074 |
Disassembler::decode(handler, handler + buffer.code_size());
|
|
1075 |
#ifndef PRODUCT
|
|
1076 |
tty->print_cr(" --- associated result handler ---");
|
|
1077 |
address rh_begin = Interpreter::result_handler(method()->result_type());
|
|
1078 |
address rh_end = rh_begin;
|
|
1079 |
while (*(int*)rh_end != 0) {
|
|
1080 |
rh_end += sizeof(int);
|
|
1081 |
}
|
|
1082 |
Disassembler::decode(rh_begin, rh_end);
|
|
1083 |
#endif
|
|
1084 |
}
|
|
1085 |
// add handler to library
|
|
1086 |
_fingerprints->append(fingerprint);
|
|
1087 |
_handlers->append(handler);
|
|
1088 |
// set handler index
|
|
1089 |
assert(_fingerprints->length() == _handlers->length(), "sanity check");
|
|
1090 |
handler_index = _fingerprints->length() - 1;
|
|
1091 |
}
|
|
1092 |
}
|
|
1093 |
} else {
|
|
1094 |
CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
|
|
1095 |
}
|
|
1096 |
if (handler_index < 0) {
|
|
1097 |
// use generic signature handler
|
|
1098 |
method->set_signature_handler(Interpreter::slow_signature_handler());
|
|
1099 |
} else {
|
|
1100 |
// set handler
|
|
1101 |
method->set_signature_handler(_handlers->at(handler_index));
|
|
1102 |
}
|
|
1103 |
}
|
|
1104 |
assert(method->signature_handler() == Interpreter::slow_signature_handler() ||
|
|
1105 |
_handlers->find(method->signature_handler()) == _fingerprints->find(Fingerprinter(method).fingerprint()),
|
|
1106 |
"sanity check");
|
|
1107 |
}
|
|
1108 |
|
|
1109 |
|
|
1110 |
BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL;
|
|
1111 |
address SignatureHandlerLibrary::_handler = NULL;
|
|
1112 |
GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL;
|
|
1113 |
GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL;
|
|
1114 |
address SignatureHandlerLibrary::_buffer = NULL;
|
|
1115 |
|
|
1116 |
|
|
1117 |
IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, methodOopDesc* method))
|
|
1118 |
methodHandle m(thread, method);
|
|
1119 |
assert(m->is_native(), "sanity check");
|
|
1120 |
// lookup native function entry point if it doesn't exist
|
|
1121 |
bool in_base_library;
|
|
1122 |
if (!m->has_native_function()) {
|
|
1123 |
NativeLookup::lookup(m, in_base_library, CHECK);
|
|
1124 |
}
|
|
1125 |
// make sure signature handler is installed
|
|
1126 |
SignatureHandlerLibrary::add(m);
|
|
1127 |
// The interpreter entry point checks the signature handler first,
|
|
1128 |
// before trying to fetch the native entry point and klass mirror.
|
|
1129 |
// We must set the signature handler last, so that multiple processors
|
|
1130 |
// preparing the same method will be sure to see non-null entry & mirror.
|
|
1131 |
IRT_END
|
|
1132 |
|
|
1133 |
#if defined(IA32) || defined(AMD64)
|
|
1134 |
IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address))
|
|
1135 |
if (src_address == dest_address) {
|
|
1136 |
return;
|
|
1137 |
}
|
|
1138 |
ResetNoHandleMark rnm; // In a LEAF entry.
|
|
1139 |
HandleMark hm;
|
|
1140 |
ResourceMark rm;
|
|
1141 |
frame fr = thread->last_frame();
|
|
1142 |
assert(fr.is_interpreted_frame(), "");
|
|
1143 |
jint bci = fr.interpreter_frame_bci();
|
|
1144 |
methodHandle mh(thread, fr.interpreter_frame_method());
|
|
1145 |
Bytecode_invoke* invoke = Bytecode_invoke_at(mh, bci);
|
|
1146 |
ArgumentSizeComputer asc(invoke->signature());
|
|
1147 |
int size_of_arguments = (asc.size() + (invoke->is_invokestatic() ? 0 : 1)); // receiver
|
|
1148 |
Copy::conjoint_bytes(src_address, dest_address,
|
|
1149 |
size_of_arguments * Interpreter::stackElementSize());
|
|
1150 |
IRT_END
|
|
1151 |
#endif
|