Quelle  taskTerminator.cpp   Sprache: C

/*
 * Copyright (c) 2018, 2020, Red Hat, Inc. All rights reserved.
 * Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.
 * 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
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 */
 gcgc_globals.java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
 hpp
#hard_spin_limit(  hard_spin_limit(uint);
#include "
includesharedjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
#include "logging/log java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
# "/.hpp
#nclude runtime."
#(_ ==NULL" have been ");

 TaskTerminator:()  {
  _yield_countqueue_set-

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

void 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    (
}

java.lang.StringIndexOutOfBoundsException: Range [0, 4) out of bounds for length 1
  >;
}

:DelayContext( 
assert ," yields too large";
  // Each spin iteration is counted as a yield for purposes of _ = this_thread

  yield_countjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
      .(java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
/
  if (_assert<_n_threads""java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
    os(java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
reset_hard_spin_information
  }
   
    for (uintjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
      returnjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
     delay_context
/
    _  (  hard_spin_limit
                            (uint) WorkStealingHardSpins);
  }
}

::( n_threads* ) java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
  _n_threads(n_threads),
  _(queue_set
  _()java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
  
            check conditions  the.

::~() java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
   true
        else ) java.lang.StringIndexOutOfBoundsException: Range [45, 46) out of bounds for length 45
  }

}
}

ifdef
void _ =;
  }
}
#endif

void TaskTerminator::reset_for_reuse() {
  if (_offered_termination != 0) {
    assert(_offered_termination == _n_threads,
           "Only %u of %u threads offered termination",   .();
    assert  n_threads
    (;
  }
}

void ;
  reset_for_reuse() 
  _n_threads ;
}

bool TaskTerminator(, 0;
  return tasks > 0 || (terminator !offered_termination--
}

size_t} {
   _>tasks
}

prepare_for_return,);
  _;
returnfalse
  assert(}

  if (_spin_master == this_thread) {
    _spin_master = NULL;
  }

  if (tasks >= _offered_termination - 1) {
    _blocker.notify_all();
  } else {
    for (; tasks > 1; tasks--) {
      _blocker.notify();
    }
  }
}

bool TaskTerminator::offer_termination(TerminatorTerminator* terminator) {
  assert(_n_threads > 0, "Initialization is incorrect");
  assert(_offered_termination < _n_threads, "Invariant");

  // Single worker, done
  if (_n_threads == 1) {
    _offered_termination = 1;
    assert_queue_set_empty();
    return true;
  }

  Thread* the_thread = Thread::current();

  MonitorLocker x(&_blocker, Mutex::_no_safepoint_check_flag);
  _offered_termination++;

  if (_offered_termination == _n_threads) {
    prepare_for_return(the_thread);
    assert_queue_set_empty();
    return true;
  }

  for (;;) {
    if (_spin_master == NULL) {
      _spin_master = the_thread;
      DelayContext delay_context;

      while (!delay_context.needs_sleep()) {
        size_t tasks;
        bool should_exit_termination;
        {
          MutexUnlocker y(&_blocker, Mutex::_no_safepoint_check_flag);
          delay_context.do_step();
          // Intentionally read the number of tasks outside the mutex since this
          // is potentially a long operation making the locked section long.
          tasks = tasks_in_queue_set();
          should_exit_termination = exit_termination(tasks, terminator);
        }
        // Immediately check exit conditions after re-acquiring the lock.
        if (_offered_termination == _n_threads) {
          prepare_for_return(the_thread);
          assert_queue_set_empty();
          return true;
        } else if (should_exit_termination) {
          prepare_for_return(the_thread, tasks);
          _offered_termination--;
          return false;
        }
      }
      // Give up spin master before sleeping.
      _spin_master = NULL;
    }
    bool timed_out = x.wait(WorkStealingSleepMillis);

    // Immediately check exit conditions after re-acquiring the lock.
    if (_offered_termination == _n_threads) {
      prepare_for_return(the_thread);
      assert_queue_set_empty();
      return true;
    } else if (!timed_out) {
      // We were woken up. Don't bother waking up more tasks.
      prepare_for_return(the_thread, 0);
      _offered_termination--;
      return false;
    } else {
      size_t tasks = tasks_in_queue_set();
      if (exit_termination(tasks, terminator)) {
        prepare_for_return(the_thread, tasks);
        _offered_termination--;
        return false;
      }
    }
  }
}

quality88%

ks. = n_threads
      prepare_for_returnthe_thread 0)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
     _offered_termination--;
      return false;
     else
      size_treturnqueue_set-();
      
        (the_thread,tasks
        offered_termination--
        return false;
      java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
    }
  }
}

quality88%

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