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

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

     1 /*

     2  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2008, 2009, 2010 Red Hat, Inc.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    26 #include "precompiled.hpp"

    27 #include "runtime/biasedLocking.hpp"

    28 #include "runtime/deoptimization.hpp"

    29 #include "runtime/thread.hpp"

    30 #include "shark/llvmHeaders.hpp"

    31 #include "shark/sharkRuntime.hpp"

    32 #ifdef TARGET_ARCH_zero

    33 # include "stack_zero.inline.hpp"

    34 #endif

    36 using namespace llvm;

    38 JRT_ENTRY(int, SharkRuntime::find_exception_handler(JavaThread* thread,

    39                                                     int*        indexes,

    40                                                     int         num_indexes))

    41   constantPoolHandle pool(thread, method(thread)->constants());

    42   KlassHandle exc_klass(thread, ((oop) tos_at(thread, 0))->klass());

    44   for (int i = 0; i < num_indexes; i++) {

    45     Klass* tmp = pool->klass_at(indexes[i], CHECK_0);

    46     KlassHandle chk_klass(thread, tmp);

    48     if (exc_klass() == chk_klass())

    49       return i;

    51     if (exc_klass()->is_subtype_of(chk_klass()))

    52       return i;

    53   }

    55   return -1;

    56 JRT_END

    58 JRT_ENTRY(void, SharkRuntime::monitorenter(JavaThread*      thread,

    59                                            BasicObjectLock* lock))

    60   if (PrintBiasedLockingStatistics)

    61     Atomic::inc(BiasedLocking::slow_path_entry_count_addr());

    63   Handle object(thread, lock->obj());

    64   assert(Universe::heap()->is_in_reserved_or_null(object()), "should be");

    65   if (UseBiasedLocking) {

    66     // Retry fast entry if bias is revoked to avoid unnecessary inflation

    67     ObjectSynchronizer::fast_enter(object, lock->lock(), true, CHECK);

    68   } else {

    69     ObjectSynchronizer::slow_enter(object, lock->lock(), CHECK);

    70   }

    71   assert(Universe::heap()->is_in_reserved_or_null(lock->obj()), "should be");

    72 JRT_END

    74 JRT_ENTRY(void, SharkRuntime::monitorexit(JavaThread*      thread,

    75                                           BasicObjectLock* lock))

    76   Handle object(thread, lock->obj());

    77   assert(Universe::heap()->is_in_reserved_or_null(object()), "should be");

    78   if (lock == NULL || object()->is_unlocked()) {

    79     THROW(vmSymbols::java_lang_IllegalMonitorStateException());

    80   }

    81   ObjectSynchronizer::slow_exit(object(), lock->lock(), thread);

    82 JRT_END

    84 JRT_ENTRY(void, SharkRuntime::new_instance(JavaThread* thread, int index))

    85   Klass* k_oop = method(thread)->constants()->klass_at(index, CHECK);

    86   instanceKlassHandle klass(THREAD, k_oop);

    88   // Make sure we are not instantiating an abstract klass

    89   klass->check_valid_for_instantiation(true, CHECK);

    91   // Make sure klass is initialized

    92   klass->initialize(CHECK);

    94   // At this point the class may not be fully initialized

    95   // because of recursive initialization. If it is fully

    96   // initialized & has_finalized is not set, we rewrite

    97   // it into its fast version (Note: no locking is needed

    98   // here since this is an atomic byte write and can be

    99   // done more than once).

   100   //

   101   // Note: In case of classes with has_finalized we don't

   102   //       rewrite since that saves us an extra check in

   103   //       the fast version which then would call the

   104   //       slow version anyway (and do a call back into

   105   //       Java).

   106   //       If we have a breakpoint, then we don't rewrite

   107   //       because the _breakpoint bytecode would be lost.

   108   oop obj = klass->allocate_instance(CHECK);

   109   thread->set_vm_result(obj);

   110 JRT_END

   112 JRT_ENTRY(void, SharkRuntime::newarray(JavaThread* thread,

   113                                        BasicType   type,

   114                                        int         size))

   115   oop obj = oopFactory::new_typeArray(type, size, CHECK);

   116   thread->set_vm_result(obj);

   117 JRT_END

   119 JRT_ENTRY(void, SharkRuntime::anewarray(JavaThread* thread,

   120                                         int         index,

   121                                         int         size))

   122   Klass* klass = method(thread)->constants()->klass_at(index, CHECK);

   123   objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);

   124   thread->set_vm_result(obj);

   125 JRT_END

   127 JRT_ENTRY(void, SharkRuntime::multianewarray(JavaThread* thread,

   128                                              int         index,

   129                                              int         ndims,

   130                                              int*        dims))

   131   Klass* klass = method(thread)->constants()->klass_at(index, CHECK);

   132   oop obj = ArrayKlass::cast(klass)->multi_allocate(ndims, dims, CHECK);

   133   thread->set_vm_result(obj);

   134 JRT_END

   136 JRT_ENTRY(void, SharkRuntime::register_finalizer(JavaThread* thread,

   137                                                  oop         object))

   138   assert(object->is_oop(), "should be");

   139   assert(object->klass()->has_finalizer(), "should have");

   140   InstanceKlass::register_finalizer(instanceOop(object), CHECK);

   141 JRT_END

   143 JRT_ENTRY(void, SharkRuntime::throw_ArithmeticException(JavaThread* thread,

   144                                                         const char* file,

   145                                                         int         line))

   146   Exceptions::_throw_msg(

   147     thread, file, line,

   148     vmSymbols::java_lang_ArithmeticException(),

   149     "");

   150 JRT_END

   152 JRT_ENTRY(void, SharkRuntime::throw_ArrayIndexOutOfBoundsException(

   153                                                      JavaThread* thread,

   154                                                      const char* file,

   155                                                      int         line,

   156                                                      int         index))

   157   char msg[jintAsStringSize];

   158   snprintf(msg, sizeof(msg), "%d", index);

   159   Exceptions::_throw_msg(

   160     thread, file, line,

   161     vmSymbols::java_lang_ArrayIndexOutOfBoundsException(),

   162     msg);

   163 JRT_END

   165 JRT_ENTRY(void, SharkRuntime::throw_ClassCastException(JavaThread* thread,

   166                                                        const char* file,

   167                                                        int         line))

   168   Exceptions::_throw_msg(

   169     thread, file, line,

   170     vmSymbols::java_lang_ClassCastException(),

   171     "");

   172 JRT_END

   174 JRT_ENTRY(void, SharkRuntime::throw_NullPointerException(JavaThread* thread,

   175                                                          const char* file,

   176                                                          int         line))

   177   Exceptions::_throw_msg(

   178     thread, file, line,

   179     vmSymbols::java_lang_NullPointerException(),

   180     "");

   181 JRT_END

   183 // Non-VM calls

   184 // Nothing in these must ever GC!

   186 void SharkRuntime::dump(const char *name, intptr_t value) {

   187   oop valueOop = (oop) value;

   188   tty->print("%s = ", name);

   189   if (valueOop->is_oop(true))

   190     valueOop->print_on(tty);

   191   else if (value >= ' ' && value <= '~')

   192     tty->print("'%c' (%d)", value, value);

   193   else

   194     tty->print("%p", value);

   195   tty->print_cr("");

   196 }

   198 bool SharkRuntime::is_subtype_of(Klass* check_klass, Klass* object_klass) {

   199   return object_klass->is_subtype_of(check_klass);

   200 }

   202 int SharkRuntime::uncommon_trap(JavaThread* thread, int trap_request) {

   203   Thread *THREAD = thread;

   205   // In C2, uncommon_trap_blob creates a frame, so all the various

   206   // deoptimization functions expect to find the frame of the method

   207   // being deopted one frame down on the stack.  We create a dummy

   208   // frame to mirror this.

   209   FakeStubFrame *stubframe = FakeStubFrame::build(CHECK_0);

   210   thread->push_zero_frame(stubframe);

   212   // Initiate the trap

   213   thread->set_last_Java_frame();

   214   Deoptimization::UnrollBlock *urb =

   215     Deoptimization::uncommon_trap(thread, trap_request);

   216   thread->reset_last_Java_frame();

   218   // Pop our dummy frame and the frame being deoptimized

   219   thread->pop_zero_frame();

   220   thread->pop_zero_frame();

   222   // Push skeleton frames

   223   int number_of_frames = urb->number_of_frames();

   224   for (int i = 0; i < number_of_frames; i++) {

   225     intptr_t size = urb->frame_sizes()[i];

   226     InterpreterFrame *frame = InterpreterFrame::build(size, CHECK_0);

   227     thread->push_zero_frame(frame);

   228   }

   230   // Push another dummy frame

   231   stubframe = FakeStubFrame::build(CHECK_0);

   232   thread->push_zero_frame(stubframe);

   234   // Fill in the skeleton frames

   235   thread->set_last_Java_frame();

   236   Deoptimization::unpack_frames(thread, Deoptimization::Unpack_uncommon_trap);

   237   thread->reset_last_Java_frame();

   239   // Pop our dummy frame

   240   thread->pop_zero_frame();

   242   // Fall back into the interpreter

   243   return number_of_frames;

   244 }

   246 FakeStubFrame* FakeStubFrame::build(TRAPS) {

   247   ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack();

   248   stack->overflow_check(header_words, CHECK_NULL);

   250   stack->push(0); // next_frame, filled in later

   251   intptr_t *fp = stack->sp();

   252   assert(fp - stack->sp() == next_frame_off, "should be");

   254   stack->push(FAKE_STUB_FRAME);

   255   assert(fp - stack->sp() == frame_type_off, "should be");

   257   return (FakeStubFrame *) fp;

   258 }

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/shark/sharkRuntime.cpp@01522ca68fc7

src/share/vm/shark/sharkRuntime.cpp