//

// Copyright (c) 2007, 2010, 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

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

// questions.

//

#include "precompiled.hpp"

#include "compiler/abstractCompiler.hpp"

#include "runtime/mutexLocker.hpp"

void AbstractCompiler::initialize_runtimes(initializer f, volatile int* state) {

  if (*state != initialized) {

    // We are thread in native here...

    CompilerThread* thread = CompilerThread::current();

    bool do_initialization = false;

    {

      ThreadInVMfromNative tv(thread);

      ResetNoHandleMark rnhm;

      MutexLocker only_one(CompileThread_lock, thread);

      if ( *state == uninitialized) {

        do_initialization = true;

        *state = initializing;

      } else {

        while (*state == initializing ) {

          CompileThread_lock->wait();

        }

      }

    }

    if (do_initialization) {

      // We can not hold any locks here since JVMTI events may call agents

      // Compiler(s) run as native

      (*f)();

      // To in_vm so we can use the lock

      ThreadInVMfromNative tv(thread);

      ResetNoHandleMark rnhm;

      MutexLocker only_one(CompileThread_lock, thread);

      assert(*state == initializing, "wrong state");

      *state = initialized;

      CompileThread_lock->notify_all();

    }

  }

}