jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.cpp@0fbdb4381b99

6814575: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair

     2 /*

     3  * Copyright 2002-2007 Sun Microsystems, Inc.  All Rights Reserved.

     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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    21  * CA 95054 USA or visit www.sun.com if you need additional information or

    22  * have any questions.

    23  *

    24  */

    26 #include "incls/_precompiled.incl"

    27 #include "incls/_gcTaskThread.cpp.incl"

    29 GCTaskThread::GCTaskThread(GCTaskManager* manager,

    30                            uint           which,

    31                            uint           processor_id) :

    32   _manager(manager),

    33   _processor_id(processor_id),

    34   _time_stamps(NULL),

    35   _time_stamp_index(0)

    36 {

    37   if (!os::create_thread(this, os::pgc_thread))

    38     vm_exit_out_of_memory(0, "Cannot create GC thread. Out of system resources.");

    40   if (PrintGCTaskTimeStamps) {

    41     _time_stamps = NEW_C_HEAP_ARRAY(GCTaskTimeStamp, GCTaskTimeStampEntries );

    43     guarantee(_time_stamps != NULL, "Sanity");

    44   }

    45   set_id(which);

    46   set_name("GC task thread#%d (ParallelGC)", which);

    47 }

    49 GCTaskThread::~GCTaskThread() {

    50   if (_time_stamps != NULL) {

    51     FREE_C_HEAP_ARRAY(GCTaskTimeStamp, _time_stamps);

    52   }

    53 }

    55 void GCTaskThread::start() {

    56   os::start_thread(this);

    57 }

    59 GCTaskTimeStamp* GCTaskThread::time_stamp_at(uint index) {

    60   guarantee(index < GCTaskTimeStampEntries, "increase GCTaskTimeStampEntries");

    62   return &(_time_stamps[index]);

    63 }

    65 void GCTaskThread::print_task_time_stamps() {

    66   assert(PrintGCTaskTimeStamps, "Sanity");

    67   assert(_time_stamps != NULL, "Sanity (Probably set PrintGCTaskTimeStamps late)");

    69   tty->print_cr("GC-Thread %u entries: %d", id(), _time_stamp_index);

    70   for(uint i=0; i<_time_stamp_index; i++) {

    71     GCTaskTimeStamp* time_stamp = time_stamp_at(i);

    72     tty->print_cr("\t[ %s " INT64_FORMAT " " INT64_FORMAT " ]",

    73                   time_stamp->name(),

    74                   time_stamp->entry_time(),

    75                   time_stamp->exit_time());

    76   }

    78   // Reset after dumping the data

    79   _time_stamp_index = 0;

    80 }

    82 void GCTaskThread::print_on(outputStream* st) const {

    83   st->print("\"%s\" ", name());

    84   Thread::print_on(st);

    85   st->cr();

    86 }

    88 void GCTaskThread::run() {

    89   // Set up the thread for stack overflow support

    90   this->record_stack_base_and_size();

    91   this->initialize_thread_local_storage();

    92   // Bind yourself to your processor.

    93   if (processor_id() != GCTaskManager::sentinel_worker()) {

    94     if (TraceGCTaskThread) {

    95       tty->print_cr("GCTaskThread::run: "

    96                     "  binding to processor %u", processor_id());

    97     }

    98     if (!os::bind_to_processor(processor_id())) {

    99       DEBUG_ONLY(

   100         warning("Couldn't bind GCTaskThread %u to processor %u",

   101                       which(), processor_id());

   102       )

   103     }

   104   }

   105   // Part of thread setup.

   106   // ??? Are these set up once here to make subsequent ones fast?

   107   HandleMark   hm_outer;

   108   ResourceMark rm_outer;

   110   TimeStamp timer;

   112   for (;/* ever */;) {

   113     // These are so we can flush the resources allocated in the inner loop.

   114     HandleMark   hm_inner;

   115     ResourceMark rm_inner;

   116     for (; /* break */; ) {

   117       // This will block until there is a task to be gotten.

   118       GCTask* task = manager()->get_task(which());

   120       // In case the update is costly

   121       if (PrintGCTaskTimeStamps) {

   122         timer.update();

   123       }

   125       jlong entry_time = timer.ticks();

   126       char* name = task->name();

   128       task->do_it(manager(), which());

   129       manager()->note_completion(which());

   131       if (PrintGCTaskTimeStamps) {

   132         assert(_time_stamps != NULL, "Sanity (PrintGCTaskTimeStamps set late?)");

   134         timer.update();

   136         GCTaskTimeStamp* time_stamp = time_stamp_at(_time_stamp_index++);

   138         time_stamp->set_name(name);

   139         time_stamp->set_entry_time(entry_time);

   140         time_stamp->set_exit_time(timer.ticks());

   141       }

   143       // Check if we should release our inner resources.

   144       if (manager()->should_release_resources(which())) {

   145         manager()->note_release(which());

   146         break;

   147       }

   148     }

   149   }

   150 }

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