/*

 * 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

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 *

 */

#include "jfr/writers/jfrEventWriterHost.hpp"

template <typename BE, typename IE, typename WriterPolicyImpl>

template <typename StorageType>

inline EventWriterHost<BE, IE, WriterPolicyImpl>::

EventWriterHost(StorageType* storage, Thread* thread) : WriterHost<BE, IE, WriterPolicyImpl>(storage, thread) {}

template <typename BE, typename IE, typename WriterPolicyImpl>

inline EventWriterHost<BE, IE, WriterPolicyImpl>::EventWriterHost(Thread* thread) : WriterHost<BE, IE, WriterPolicyImpl>(thread) {

}

template <typename BE, typename IE, typename WriterPolicyImpl>

inline void EventWriterHost<BE, IE, WriterPolicyImpl>::begin_write() {

  assert(this->is_valid(), "invariant");

  assert(!this->is_acquired(), "calling begin with writer already in acquired state!");

  this->acquire();

  assert(this->used_offset() == 0, "invariant");

  assert(this->is_acquired(), "invariant");

}

template <typename BE, typename IE, typename WriterPolicyImpl>

inline intptr_t EventWriterHost<BE, IE, WriterPolicyImpl>::end_write(void) {

  assert(this->is_acquired(),

    "state corruption, calling end with writer with non-acquired state!");

  return this->is_valid() ? this->used_offset() : 0;

}

template <typename BE, typename IE, typename WriterPolicyImpl>

inline void EventWriterHost<BE, IE, WriterPolicyImpl>::begin_event_write() {

  assert(this->is_valid(), "invariant");

  assert(!this->is_acquired(), "calling begin with writer already in acquired state!");

  this->begin_write();

  this->reserve(sizeof(u4)); // reserve the event size slot

}

template <typename BE, typename IE, typename WriterPolicyImpl>

inline intptr_t EventWriterHost<BE, IE, WriterPolicyImpl>::end_event_write() {

  assert(this->is_acquired(), "invariant");

  if (!this->is_valid()) {

    this->release();

    return 0;

  }

  const u4 written = (u4)end_write();

  if (written > sizeof(u4)) { // larger than header reserve

    this->write_padded_at_offset(written, 0);

    this->commit();

  }

  this->release();

  assert(!this->is_acquired(), "invariant");

  return written;

}

template <typename BE, typename IE, typename WriterPolicyImpl>

template <typename StorageType>

inline StackEventWriterHost<BE, IE, WriterPolicyImpl>::

StackEventWriterHost(StorageType* storage, Thread* thread) : EventWriterHost<BE, IE, WriterPolicyImpl>(storage, thread) {

  this->begin_event_write();

}

template <typename BE, typename IE, typename WriterPolicyImpl>

inline StackEventWriterHost<BE, IE, WriterPolicyImpl>::StackEventWriterHost(Thread* thread) : EventWriterHost<BE, IE, WriterPolicyImpl>(thread) {

  this->begin_event_write();

}

template <typename BE, typename IE, typename WriterPolicyImpl>

inline StackEventWriterHost<BE, IE, WriterPolicyImpl>::~StackEventWriterHost() {

  this->end_event_write();

}