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929f9cbd
编写于
7月 03, 2017
作者:
L
liaogang
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电子邮件补丁
差异文件
ENH: Add Metadata for memory block
上级
89110fd2
变更
2
隐藏空白更改
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2 changed file
with
115 addition
and
0 deletion
+115
-0
paddle/memory/detail/metadata.cc
paddle/memory/detail/metadata.cc
+62
-0
paddle/memory/detail/metadata.h
paddle/memory/detail/metadata.h
+53
-0
未找到文件。
paddle/memory/detail/metadata.cc
0 → 100644
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929f9cbd
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */
#include "paddle/memory/detail/metadata.h"
#include <functional>
namespace
paddle
{
namespace
memory
{
namespace
detail
{
Metadata
::
Metadata
(
MemoryBlock
::
Type
t
,
size_t
i
,
size_t
s
,
size_t
ts
,
MemoryBlock
*
l
,
MemoryBlock
*
r
)
:
type
(
t
),
index
(
i
),
size
(
s
),
total_size
(
ts
),
left_buddy
(
l
),
right_buddy
(
r
)
{}
template
<
class
T
>
inline
void
hash_combine
(
std
::
size_t
&
seed
,
const
T
&
v
)
{
std
::
hash
<
T
>
hasher
;
seed
^=
hasher
(
v
)
+
0x9e3779b9
+
(
seed
<<
6
)
+
(
seed
>>
2
);
}
inline
size_t
hash
(
const
Metadata
*
metadata
,
size_t
initial_seed
)
{
size_t
seed
=
initial_seed
;
hash_combine
(
seed
,
(
size_t
)
metadata
->
type
);
hash_combine
(
seed
,
metadata
->
index
);
hash_combine
(
seed
,
metadata
->
size
);
hash_combine
(
seed
,
metadata
->
total_size
);
hash_combine
(
seed
,
metadata
->
left_buddy
);
hash_combine
(
seed
,
metadata
->
right_buddy
);
return
seed
;
}
void
Metadata
::
update_guards
()
{
guard_begin
=
hash
(
this
,
1
);
guard_end
=
hash
(
this
,
2
);
}
bool
Metadata
::
check_guards
()
const
{
return
guard_begin
==
hash
(
this
,
1
)
&&
guard_end
==
hash
(
this
,
2
);
}
}
// namespace detail
}
// namespace memory
}
// namespace paddle
paddle/memory/detail/metadata.h
0 → 100644
浏览文件 @
929f9cbd
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */
#pragma once
#include "paddle/memory/detail/memory_block.h"
#include <stddef.h>
namespace
paddle
{
namespace
memory
{
namespace
detail
{
class
Metadata
{
public:
Metadata
(
MemoryBlock
::
Type
t
,
size_t
i
,
size_t
s
,
size_t
ts
,
MemoryBlock
*
l
,
MemoryBlock
*
r
);
public:
/*! \brief Update the guards when metadata is changed */
void
update_guards
();
/*! \brief Check consistency to previous modification */
bool
check_guards
()
const
;
public:
// TODO(gangliao): compress this
// clang-format off
size_t
guard_begin
=
0
;
MemoryBlock
::
Type
type
=
MemoryBlock
::
INVALID_CHUNK
;
size_t
index
=
0
;
size_t
size
=
0
;
size_t
total_size
=
0
;
MemoryBlock
*
left_buddy
=
nullptr
;
MemoryBlock
*
right_buddy
=
nullptr
;
size_t
guard_end
=
0
;
// clang-format on
};
}
// namespace detail
}
// namespace memory
}
// namespace paddle
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