jdk8-mips64-public/hotspot: src/share/vm/shark/sharkRuntime.cpp@01522ca68fc7 (annotated)

src/share/vm/shark/sharkRuntime.cpp@01522ca68fc7 (annotated)

src/share/vm/shark/sharkRuntime.cpp

Tue, 18 Jun 2013 12:31:07 -0700

author: johnc
date: Tue, 18 Jun 2013 12:31:07 -0700
changeset 5277: 01522ca68fc7
parent 4142: d8ce2825b193
child 6876: 710a3c8b516e
permissions: -rw-r--r--

8015237: Parallelize string table scanning during strong root processing
Summary: Parallelize the scanning of the intern string table by having each GC worker claim a given number of buckets. Changes were also reviewed by Per Liden <per.liden@oracle.com>.
Reviewed-by: tschatzl, stefank, twisti

 /*
  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2008, 2009, 2010 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "runtime/biasedLocking.hpp"
 #include "runtime/deoptimization.hpp"
 #include "runtime/thread.hpp"
 #include "shark/llvmHeaders.hpp"
 #include "shark/sharkRuntime.hpp"
 #ifdef TARGET_ARCH_zero
 # include "stack_zero.inline.hpp"
 #endif
 using namespace llvm;
 JRT_ENTRY(int, SharkRuntime::find_exception_handler(JavaThread* thread,
                                                     int*        indexes,
                                                     int         num_indexes))
   constantPoolHandle pool(thread, method(thread)->constants());
   KlassHandle exc_klass(thread, ((oop) tos_at(thread, 0))->klass());
   for (int i = 0; i < num_indexes; i++) {
     Klass* tmp = pool->klass_at(indexes[i], CHECK_0);
     KlassHandle chk_klass(thread, tmp);
     if (exc_klass() == chk_klass())
       return i;
     if (exc_klass()->is_subtype_of(chk_klass()))
       return i;
   }
   return -1;
 JRT_END
 JRT_ENTRY(void, SharkRuntime::monitorenter(JavaThread*      thread,
                                            BasicObjectLock* lock))
   if (PrintBiasedLockingStatistics)
     Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
   Handle object(thread, lock->obj());
   assert(Universe::heap()->is_in_reserved_or_null(object()), "should be");
   if (UseBiasedLocking) {
     // Retry fast entry if bias is revoked to avoid unnecessary inflation
     ObjectSynchronizer::fast_enter(object, lock->lock(), true, CHECK);
   } else {
     ObjectSynchronizer::slow_enter(object, lock->lock(), CHECK);
   }
   assert(Universe::heap()->is_in_reserved_or_null(lock->obj()), "should be");
 JRT_END
 JRT_ENTRY(void, SharkRuntime::monitorexit(JavaThread*      thread,
                                           BasicObjectLock* lock))
   Handle object(thread, lock->obj());
   assert(Universe::heap()->is_in_reserved_or_null(object()), "should be");
   if (lock == NULL || object()->is_unlocked()) {
     THROW(vmSymbols::java_lang_IllegalMonitorStateException());
   }
   ObjectSynchronizer::slow_exit(object(), lock->lock(), thread);
 JRT_END
 JRT_ENTRY(void, SharkRuntime::new_instance(JavaThread* thread, int index))
   Klass* k_oop = method(thread)->constants()->klass_at(index, CHECK);
   instanceKlassHandle klass(THREAD, k_oop);
   // Make sure we are not instantiating an abstract klass
   klass->check_valid_for_instantiation(true, CHECK);
   // Make sure klass is initialized
   klass->initialize(CHECK);
   // At this point the class may not be fully initialized
   // because of recursive initialization. If it is fully
   // initialized & has_finalized is not set, we rewrite
   // it into its fast version (Note: no locking is needed
   // here since this is an atomic byte write and can be
   // done more than once).
   //
   // Note: In case of classes with has_finalized we don't
   //       rewrite since that saves us an extra check in
   //       the fast version which then would call the
   //       slow version anyway (and do a call back into
   //       Java).
   //       If we have a breakpoint, then we don't rewrite
   //       because the _breakpoint bytecode would be lost.
   oop obj = klass->allocate_instance(CHECK);
   thread->set_vm_result(obj);
 JRT_END
 JRT_ENTRY(void, SharkRuntime::newarray(JavaThread* thread,
                                        BasicType   type,
                                        int         size))
   oop obj = oopFactory::new_typeArray(type, size, CHECK);
   thread->set_vm_result(obj);
 JRT_END
 JRT_ENTRY(void, SharkRuntime::anewarray(JavaThread* thread,
                                         int         index,
                                         int         size))
   Klass* klass = method(thread)->constants()->klass_at(index, CHECK);
   objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);
   thread->set_vm_result(obj);
 JRT_END
 JRT_ENTRY(void, SharkRuntime::multianewarray(JavaThread* thread,
                                              int         index,
                                              int         ndims,
                                              int*        dims))
   Klass* klass = method(thread)->constants()->klass_at(index, CHECK);
   oop obj = ArrayKlass::cast(klass)->multi_allocate(ndims, dims, CHECK);
   thread->set_vm_result(obj);
 JRT_END
 JRT_ENTRY(void, SharkRuntime::register_finalizer(JavaThread* thread,
                                                  oop         object))
   assert(object->is_oop(), "should be");
   assert(object->klass()->has_finalizer(), "should have");
   InstanceKlass::register_finalizer(instanceOop(object), CHECK);
 JRT_END
 JRT_ENTRY(void, SharkRuntime::throw_ArithmeticException(JavaThread* thread,
                                                         const char* file,
                                                         int         line))
   Exceptions::_throw_msg(
     thread, file, line,
     vmSymbols::java_lang_ArithmeticException(),
     "");
 JRT_END
 JRT_ENTRY(void, SharkRuntime::throw_ArrayIndexOutOfBoundsException(
                                                      JavaThread* thread,
                                                      const char* file,
                                                      int         line,
                                                      int         index))
   char msg[jintAsStringSize];
   snprintf(msg, sizeof(msg), "%d", index);
   Exceptions::_throw_msg(
     thread, file, line,
     vmSymbols::java_lang_ArrayIndexOutOfBoundsException(),
     msg);
 JRT_END
 JRT_ENTRY(void, SharkRuntime::throw_ClassCastException(JavaThread* thread,
                                                        const char* file,
                                                        int         line))
   Exceptions::_throw_msg(
     thread, file, line,
     vmSymbols::java_lang_ClassCastException(),
     "");
 JRT_END
 JRT_ENTRY(void, SharkRuntime::throw_NullPointerException(JavaThread* thread,
                                                          const char* file,
                                                          int         line))
   Exceptions::_throw_msg(
     thread, file, line,
     vmSymbols::java_lang_NullPointerException(),
     "");
 JRT_END
 // Non-VM calls
 // Nothing in these must ever GC!
 void SharkRuntime::dump(const char *name, intptr_t value) {
   oop valueOop = (oop) value;
   tty->print("%s = ", name);
   if (valueOop->is_oop(true))
     valueOop->print_on(tty);
   else if (value >= ' ' && value <= '~')
     tty->print("'%c' (%d)", value, value);
   else
     tty->print("%p", value);
   tty->print_cr("");
 }
 bool SharkRuntime::is_subtype_of(Klass* check_klass, Klass* object_klass) {
   return object_klass->is_subtype_of(check_klass);
 }
 int SharkRuntime::uncommon_trap(JavaThread* thread, int trap_request) {
   Thread *THREAD = thread;
   // In C2, uncommon_trap_blob creates a frame, so all the various
   // deoptimization functions expect to find the frame of the method
   // being deopted one frame down on the stack.  We create a dummy
   // frame to mirror this.
   FakeStubFrame *stubframe = FakeStubFrame::build(CHECK_0);
   thread->push_zero_frame(stubframe);
   // Initiate the trap
   thread->set_last_Java_frame();
   Deoptimization::UnrollBlock *urb =
     Deoptimization::uncommon_trap(thread, trap_request);
   thread->reset_last_Java_frame();
   // Pop our dummy frame and the frame being deoptimized
   thread->pop_zero_frame();
   thread->pop_zero_frame();
   // Push skeleton frames
   int number_of_frames = urb->number_of_frames();
   for (int i = 0; i < number_of_frames; i++) {
     intptr_t size = urb->frame_sizes()[i];
     InterpreterFrame *frame = InterpreterFrame::build(size, CHECK_0);
     thread->push_zero_frame(frame);
   }
   // Push another dummy frame
   stubframe = FakeStubFrame::build(CHECK_0);
   thread->push_zero_frame(stubframe);
   // Fill in the skeleton frames
   thread->set_last_Java_frame();
   Deoptimization::unpack_frames(thread, Deoptimization::Unpack_uncommon_trap);
   thread->reset_last_Java_frame();
   // Pop our dummy frame
   thread->pop_zero_frame();
   // Fall back into the interpreter
   return number_of_frames;
 }
 FakeStubFrame* FakeStubFrame::build(TRAPS) {
   ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack();
   stack->overflow_check(header_words, CHECK_NULL);
   stack->push(0); // next_frame, filled in later
   intptr_t *fp = stack->sp();
   assert(fp - stack->sp() == next_frame_off, "should be");
   stack->push(FAKE_STUB_FRAME);
   assert(fp - stack->sp() == frame_type_off, "should be");
   return (FakeStubFrame *) fp;
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/shark/sharkRuntime.cpp@01522ca68fc7 (annotated)

src/share/vm/shark/sharkRuntime.cpp