1 /*

     2  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.

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

     4  *

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

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

     7  * published by the Free Software Foundation.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

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

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

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP

    26 #define SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP

    27 

    28 #include "jfr/recorder/storage/jfrStorageUtils.hpp"

    29 

    30 template <typename T>

    31 inline bool UnBufferedWriteToChunk<T>::write(T* t, const u1* data, size_t size) {

    32   _writer.write_unbuffered(data, size);

    33   _processed += size;

    34   return true;

    35 }

    36 

    37 template <typename T>

    38 inline bool DefaultDiscarder<T>::discard(T* t, const u1* data, size_t size) {

    39   _processed += size;

    40   return true;

    41 }

    42 

    43 template <typename Operation>

    44 inline bool ConcurrentWriteOp<Operation>::process(typename Operation::Type* t) {

    45   const u1* const current_top = t->concurrent_top();

    46   const size_t unflushed_size = t->pos() - current_top;

    47   if (unflushed_size == 0) {

    48     t->set_concurrent_top(current_top);

    49     return true;

    50   }

    51   const bool result = _operation.write(t, current_top, unflushed_size);

    52   t->set_concurrent_top(current_top + unflushed_size);

    53   return result;

    54 }

    55 

    56 template <typename Operation>

    57 inline bool ConcurrentWriteOpExcludeRetired<Operation>::process(typename Operation::Type* t) {

    58   if (t->retired()) {

    59     assert(t->empty(), "invariant");

    60     return true;

    61   }

    62   return ConcurrentWriteOp<Operation>::process(t);

    63 }

    64 

    65 template <typename Operation>

    66 inline bool MutexedWriteOp<Operation>::process(typename Operation::Type* t) {

    67   assert(t != NULL, "invariant");

    68   const u1* const current_top = t->top();

    69   const size_t unflushed_size = t->pos() - current_top;

    70   if (unflushed_size == 0) {

    71     return true;

    72   }

    73   const bool result = _operation.write(t, current_top, unflushed_size);

    74   t->set_top(current_top + unflushed_size);

    75   return result;

    76 }

    77 

    78 template <typename Operation>

    79 inline bool DiscardOp<Operation>::process(typename Operation::Type* t) {

    80   assert(t != NULL, "invariant");

    81   const u1* const current_top = _mode == concurrent ? t->concurrent_top() : t->top();

    82   const size_t unflushed_size = t->pos() - current_top;

    83   if (unflushed_size == 0) {

    84     if (_mode == concurrent) {

    85       t->set_concurrent_top(current_top);

    86     }

    87     return true;

    88   }

    89   const bool result = _operation.discard(t, current_top, unflushed_size);

    90   if (_mode == concurrent) {

    91     t->set_concurrent_top(current_top + unflushed_size);

    92   } else {

    93     t->set_top(current_top + unflushed_size);

    94   }

    95   return result;

    96 }

    97 

    98 #endif // SHARE_VM_JFR_RECORDER_STORAGE_JFRSTORAGEUTILS_INLINE_HPP