Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F76867031
Kokkos_Volatile_Load.hpp
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Sat, Aug 10, 20:53
Size
6 KB
Mime Type
text/x-c++
Expires
Mon, Aug 12, 20:53 (2 d)
Engine
blob
Format
Raw Data
Handle
19780146
Attached To
rLAMMPS lammps
Kokkos_Volatile_Load.hpp
View Options
/*
//@HEADER
// ************************************************************************
//
// Kokkos v. 2.0
// Copyright (2014) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact H. Carter Edwards (hcedwar@sandia.gov)
//
// ************************************************************************
//@HEADER
*/
#if defined( KOKKOS_ATOMIC_HPP ) && ! defined( KOKKOS_VOLATILE_LOAD_HPP )
#define KOKKOS_VOLATILE_LOAD_HPP
#if defined( __GNUC__ )
/* GNU C */
|| \
defined( __GNUG__ )
/* GNU C++ */
|| \
defined( __clang__ )
#define KOKKOS_IMPL_MAY_ALIAS __attribute__((__may_alias__))
#else
#define KOKKOS_IMPL_MAY_ALIAS
#endif
namespace
Kokkos
{
//----------------------------------------------------------------------------
template
<
typename
T
>
KOKKOS_FORCEINLINE_FUNCTION
T
volatile_load
(
T
const
volatile
*
const
src_ptr
)
{
typedef
uint64_t
KOKKOS_IMPL_MAY_ALIAS
T64
;
typedef
uint32_t
KOKKOS_IMPL_MAY_ALIAS
T32
;
typedef
uint16_t
KOKKOS_IMPL_MAY_ALIAS
T16
;
typedef
uint8_t
KOKKOS_IMPL_MAY_ALIAS
T8
;
enum
{
NUM_8
=
sizeof
(
T
),
NUM_16
=
NUM_8
/
2
,
NUM_32
=
NUM_8
/
4
,
NUM_64
=
NUM_8
/
8
};
union
{
T
const
volatile
*
const
ptr
;
T64
const
volatile
*
const
ptr64
;
T32
const
volatile
*
const
ptr32
;
T16
const
volatile
*
const
ptr16
;
T8
const
volatile
*
const
ptr8
;
}
src
=
{
src_ptr
};
T
result
;
union
{
T
*
const
ptr
;
T64
*
const
ptr64
;
T32
*
const
ptr32
;
T16
*
const
ptr16
;
T8
*
const
ptr8
;
}
dst
=
{
&
result
};
for
(
int
i
=
0
;
i
<
NUM_64
;
++
i
)
{
dst
.
ptr64
[
i
]
=
src
.
ptr64
[
i
];
}
if
(
NUM_64
*
2
<
NUM_32
)
{
dst
.
ptr32
[
NUM_64
*
2
]
=
src
.
ptr32
[
NUM_64
*
2
];
}
if
(
NUM_32
*
2
<
NUM_16
)
{
dst
.
ptr16
[
NUM_32
*
2
]
=
src
.
ptr16
[
NUM_32
*
2
];
}
if
(
NUM_16
*
2
<
NUM_8
)
{
dst
.
ptr8
[
NUM_16
*
2
]
=
src
.
ptr8
[
NUM_16
*
2
];
}
return
result
;
}
template
<
typename
T
>
KOKKOS_FORCEINLINE_FUNCTION
void
volatile_store
(
T
volatile
*
const
dst_ptr
,
T
const
volatile
*
const
src_ptr
)
{
typedef
uint64_t
KOKKOS_IMPL_MAY_ALIAS
T64
;
typedef
uint32_t
KOKKOS_IMPL_MAY_ALIAS
T32
;
typedef
uint16_t
KOKKOS_IMPL_MAY_ALIAS
T16
;
typedef
uint8_t
KOKKOS_IMPL_MAY_ALIAS
T8
;
enum
{
NUM_8
=
sizeof
(
T
),
NUM_16
=
NUM_8
/
2
,
NUM_32
=
NUM_8
/
4
,
NUM_64
=
NUM_8
/
8
};
union
{
T
const
volatile
*
const
ptr
;
T64
const
volatile
*
const
ptr64
;
T32
const
volatile
*
const
ptr32
;
T16
const
volatile
*
const
ptr16
;
T8
const
volatile
*
const
ptr8
;
}
src
=
{
src_ptr
};
union
{
T
volatile
*
const
ptr
;
T64
volatile
*
const
ptr64
;
T32
volatile
*
const
ptr32
;
T16
volatile
*
const
ptr16
;
T8
volatile
*
const
ptr8
;
}
dst
=
{
dst_ptr
};
for
(
int
i
=
0
;
i
<
NUM_64
;
++
i
)
{
dst
.
ptr64
[
i
]
=
src
.
ptr64
[
i
];
}
if
(
NUM_64
*
2
<
NUM_32
)
{
dst
.
ptr32
[
NUM_64
*
2
]
=
src
.
ptr32
[
NUM_64
*
2
];
}
if
(
NUM_32
*
2
<
NUM_16
)
{
dst
.
ptr16
[
NUM_32
*
2
]
=
src
.
ptr16
[
NUM_32
*
2
];
}
if
(
NUM_16
*
2
<
NUM_8
)
{
dst
.
ptr8
[
NUM_16
*
2
]
=
src
.
ptr8
[
NUM_16
*
2
];
}
}
template
<
typename
T
>
KOKKOS_FORCEINLINE_FUNCTION
void
volatile_store
(
T
volatile
*
const
dst_ptr
,
T
const
*
const
src_ptr
)
{
typedef
uint64_t
KOKKOS_IMPL_MAY_ALIAS
T64
;
typedef
uint32_t
KOKKOS_IMPL_MAY_ALIAS
T32
;
typedef
uint16_t
KOKKOS_IMPL_MAY_ALIAS
T16
;
typedef
uint8_t
KOKKOS_IMPL_MAY_ALIAS
T8
;
enum
{
NUM_8
=
sizeof
(
T
),
NUM_16
=
NUM_8
/
2
,
NUM_32
=
NUM_8
/
4
,
NUM_64
=
NUM_8
/
8
};
union
{
T
const
*
const
ptr
;
T64
const
*
const
ptr64
;
T32
const
*
const
ptr32
;
T16
const
*
const
ptr16
;
T8
const
*
const
ptr8
;
}
src
=
{
src_ptr
};
union
{
T
volatile
*
const
ptr
;
T64
volatile
*
const
ptr64
;
T32
volatile
*
const
ptr32
;
T16
volatile
*
const
ptr16
;
T8
volatile
*
const
ptr8
;
}
dst
=
{
dst_ptr
};
for
(
int
i
=
0
;
i
<
NUM_64
;
++
i
)
{
dst
.
ptr64
[
i
]
=
src
.
ptr64
[
i
];
}
if
(
NUM_64
*
2
<
NUM_32
)
{
dst
.
ptr32
[
NUM_64
*
2
]
=
src
.
ptr32
[
NUM_64
*
2
];
}
if
(
NUM_32
*
2
<
NUM_16
)
{
dst
.
ptr16
[
NUM_32
*
2
]
=
src
.
ptr16
[
NUM_32
*
2
];
}
if
(
NUM_16
*
2
<
NUM_8
)
{
dst
.
ptr8
[
NUM_16
*
2
]
=
src
.
ptr8
[
NUM_16
*
2
];
}
}
template
<
typename
T
>
KOKKOS_FORCEINLINE_FUNCTION
void
volatile_store
(
T
volatile
*
dst_ptr
,
T
const
volatile
&
src
)
{
volatile_store
(
dst_ptr
,
&
src
);
}
template
<
typename
T
>
KOKKOS_FORCEINLINE_FUNCTION
void
volatile_store
(
T
volatile
*
dst_ptr
,
T
const
&
src
)
{
volatile_store
(
dst_ptr
,
&
src
);
}
template
<
typename
T
>
KOKKOS_FORCEINLINE_FUNCTION
T
safe_load
(
T
const
*
const
ptr
)
{
#if !defined( __MIC__ )
return
*
ptr
;
#else
return
volatile_load
(
ptr
);
#endif
}
}
// namespace kokkos
#undef KOKKOS_IMPL_MAY_ALIAS
#endif
Event Timeline
Log In to Comment