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cpp-libs
Actor Framework
Commits
db299ded
Commit
db299ded
authored
Sep 08, 2019
by
Dominik Charousset
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Add function to estimate serialized message size
parent
c63020f6
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4
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4 changed files
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317 additions
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0 deletions
+317
-0
libcaf_core/CMakeLists.txt
libcaf_core/CMakeLists.txt
+1
-0
libcaf_core/caf/detail/serialized_size.hpp
libcaf_core/caf/detail/serialized_size.hpp
+87
-0
libcaf_core/src/serialized_size.cpp
libcaf_core/src/serialized_size.cpp
+148
-0
libcaf_core/test/serialized_size.cpp
libcaf_core/test/serialized_size.cpp
+81
-0
No files found.
libcaf_core/CMakeLists.txt
View file @
db299ded
...
@@ -105,6 +105,7 @@ set(LIBCAF_CORE_SRCS
...
@@ -105,6 +105,7 @@ set(LIBCAF_CORE_SRCS
src/scoped_execution_unit.cpp
src/scoped_execution_unit.cpp
src/sec.cpp
src/sec.cpp
src/sequencer.cpp
src/sequencer.cpp
src/serialized_size.cpp
src/serializer.cpp
src/serializer.cpp
src/set_thread_name.cpp
src/set_thread_name.cpp
src/settings.cpp
src/settings.cpp
...
...
libcaf_core/caf/detail/serialized_size.hpp
0 → 100644
View file @
db299ded
/******************************************************************************
* ____ _ _____ *
* / ___| / \ | ___| C++ *
* | | / _ \ | |_ Actor *
* | |___ / ___ \| _| Framework *
* \____/_/ \_|_| *
* *
* Copyright 2011-2019 Dominik Charousset *
* *
* Distributed under the terms and conditions of the BSD 3-Clause License or *
* (at your option) under the terms and conditions of the Boost Software *
* License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE. *
* *
* If you did not receive a copy of the license files, see *
* http://opensource.org/licenses/BSD-3-Clause and *
* http://www.boost.org/LICENSE_1_0.txt. *
******************************************************************************/
#pragma once
#include "caf/serializer.hpp"
namespace
caf
{
namespace
detail
{
class
serialized_size_inspector
final
:
public
serializer
{
public:
using
super
=
serializer
;
using
super
::
super
;
size_t
result
()
const
noexcept
{
return
result_
;
}
error
begin_object
(
uint16_t
&
nr
,
std
::
string
&
name
)
override
;
error
end_object
()
override
;
error
begin_sequence
(
size_t
&
list_size
)
override
;
error
end_sequence
()
override
;
error
apply_raw
(
size_t
num_bytes
,
void
*
data
)
override
;
protected:
error
apply_impl
(
int8_t
&
x
)
override
;
error
apply_impl
(
uint8_t
&
x
)
override
;
error
apply_impl
(
int16_t
&
x
)
override
;
error
apply_impl
(
uint16_t
&
x
)
override
;
error
apply_impl
(
int32_t
&
x
)
override
;
error
apply_impl
(
uint32_t
&
x
)
override
;
error
apply_impl
(
int64_t
&
x
)
override
;
error
apply_impl
(
uint64_t
&
x
)
override
;
error
apply_impl
(
float
&
x
)
override
;
error
apply_impl
(
double
&
x
)
override
;
error
apply_impl
(
long
double
&
x
)
override
;
error
apply_impl
(
std
::
string
&
x
)
override
;
error
apply_impl
(
std
::
u16string
&
x
)
override
;
error
apply_impl
(
std
::
u32string
&
x
)
override
;
private:
size_t
result_
=
0
;
};
template
<
class
T
>
size_t
serialized_size
(
actor_system
&
sys
,
const
T
&
x
)
{
serialized_size_inspector
f
{
sys
};
f
(
const_cast
<
T
&>
(
x
));
return
f
.
result
();
}
}
// namespace detail
}
// namespace caf
libcaf_core/src/serialized_size.cpp
0 → 100644
View file @
db299ded
/******************************************************************************
* ____ _ _____ *
* / ___| / \ | ___| C++ *
* | | / _ \ | |_ Actor *
* | |___ / ___ \| _| Framework *
* \____/_/ \_|_| *
* *
* Copyright 2011-2019 Dominik Charousset *
* *
* Distributed under the terms and conditions of the BSD 3-Clause License or *
* (at your option) under the terms and conditions of the Boost Software *
* License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE. *
* *
* If you did not receive a copy of the license files, see *
* http://opensource.org/licenses/BSD-3-Clause and *
* http://www.boost.org/LICENSE_1_0.txt. *
******************************************************************************/
#include "caf/detail/serialized_size.hpp"
#include <iomanip>
#include <sstream>
namespace
caf
{
namespace
detail
{
error
serialized_size_inspector
::
begin_object
(
uint16_t
&
nr
,
std
::
string
&
name
)
{
if
(
nr
!=
0
)
return
apply
(
nr
);
if
(
auto
err
=
apply
(
nr
))
return
err
;
return
apply
(
name
);
}
error
serialized_size_inspector
::
end_object
()
{
return
none
;
}
error
serialized_size_inspector
::
begin_sequence
(
size_t
&
list_size
)
{
// Use varbyte encoding to compress sequence size on the wire.
// For 64-bit values, the encoded representation cannot get larger than 10
// bytes. A scratch space of 16 bytes suffices as upper bound.
uint8_t
buf
[
16
];
auto
i
=
buf
;
auto
x
=
static_cast
<
uint32_t
>
(
list_size
);
while
(
x
>
0x7f
)
{
*
i
++
=
(
static_cast
<
uint8_t
>
(
x
)
&
0x7f
)
|
0x80
;
x
>>=
7
;
}
*
i
++
=
static_cast
<
uint8_t
>
(
x
)
&
0x7f
;
apply_raw
(
static_cast
<
size_t
>
(
i
-
buf
),
buf
);
return
none
;
}
error
serialized_size_inspector
::
end_sequence
()
{
return
none
;
}
error
serialized_size_inspector
::
apply_raw
(
size_t
num_bytes
,
void
*
)
{
result_
+=
num_bytes
;
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
int8_t
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
uint8_t
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
int16_t
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
uint16_t
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
int32_t
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
uint32_t
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
int64_t
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
uint64_t
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
float
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
double
&
x
)
{
result_
+=
sizeof
(
x
);
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
long
double
&
x
)
{
// The IEEE-754 conversion does not work for long double
// => fall back to string serialization (event though it sucks).
std
::
ostringstream
oss
;
oss
<<
std
::
setprecision
(
std
::
numeric_limits
<
long
double
>::
digits
)
<<
x
;
auto
tmp
=
oss
.
str
();
return
apply_impl
(
tmp
);
}
error
serialized_size_inspector
::
apply_impl
(
std
::
string
&
x
)
{
size_t
str_size
=
x
.
size
();
begin_sequence
(
str_size
);
result_
+=
x
.
size
();
end_sequence
();
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
std
::
u16string
&
x
)
{
size_t
str_size
=
x
.
size
();
begin_sequence
(
str_size
);
result_
+=
x
.
size
()
*
sizeof
(
uint16_t
);
end_sequence
();
return
none
;
}
error
serialized_size_inspector
::
apply_impl
(
std
::
u32string
&
x
)
{
size_t
str_size
=
x
.
size
();
begin_sequence
(
str_size
);
result_
+=
x
.
size
()
*
sizeof
(
uint32_t
);
end_sequence
();
return
none
;
}
}
// namespace detail
}
// namespace caf
libcaf_core/test/serialized_size.cpp
0 → 100644
View file @
db299ded
/******************************************************************************
* ____ _ _____ *
* / ___| / \ | ___| C++ *
* | | / _ \ | |_ Actor *
* | |___ / ___ \| _| Framework *
* \____/_/ \_|_| *
* *
* Copyright 2011-2019 Dominik Charousset *
* *
* Distributed under the terms and conditions of the BSD 3-Clause License or *
* (at your option) under the terms and conditions of the Boost Software *
* License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE. *
* *
* If you did not receive a copy of the license files, see *
* http://opensource.org/licenses/BSD-3-Clause and *
* http://www.boost.org/LICENSE_1_0.txt. *
******************************************************************************/
#define CAF_SUITE serialized_size
#include "caf/detail/serialized_size.hpp"
#include "caf/test/dsl.hpp"
#include <vector>
#include "caf/byte.hpp"
#include "caf/serializer_impl.hpp"
using
namespace
caf
;
using
caf
::
detail
::
serialized_size
;
namespace
{
struct
fixture
:
test_coordinator_fixture
<>
{
using
buffer_type
=
std
::
vector
<
byte
>
;
template
<
class
...
Ts
>
size_t
actual_size
(
const
Ts
&
...
xs
)
{
buffer_type
buf
;
serializer_impl
<
buffer_type
>
sink
{
sys
,
buf
};
if
(
auto
err
=
sink
(
xs
...))
CAF_FAIL
(
"failed to serialize data: "
<<
sys
.
render
(
err
));
return
buf
.
size
();
}
};
}
// namespace
#define CHECK_SAME_SIZE(...) \
CAF_CHECK_EQUAL(serialized_size(sys, __VA_ARGS__), actual_size(__VA_ARGS__))
CAF_TEST_FIXTURE_SCOPE
(
serialized_size_tests
,
fixture
)
CAF_TEST
(
numbers
)
{
CHECK_SAME_SIZE
(
int8_t
{
42
});
CHECK_SAME_SIZE
(
int16_t
{
42
});
CHECK_SAME_SIZE
(
int32_t
{
42
});
CHECK_SAME_SIZE
(
int64_t
{
42
});
CHECK_SAME_SIZE
(
uint8_t
{
42
});
CHECK_SAME_SIZE
(
uint16_t
{
42
});
CHECK_SAME_SIZE
(
uint32_t
{
42
});
CHECK_SAME_SIZE
(
uint64_t
{
42
});
CHECK_SAME_SIZE
(
4.2
f
);
CHECK_SAME_SIZE
(
4.2
);
}
CAF_TEST
(
containers
)
{
CHECK_SAME_SIZE
(
std
::
string
{
"foobar"
});
CHECK_SAME_SIZE
(
std
::
vector
<
char
>
({
'a'
,
'b'
,
'c'
}));
CHECK_SAME_SIZE
(
std
::
vector
<
std
::
string
>
({
"hello"
,
"world"
}));
}
CAF_TEST
(
messages
)
{
CHECK_SAME_SIZE
(
make_message
(
42
));
CHECK_SAME_SIZE
(
make_message
(
1
,
2
,
3
));
CHECK_SAME_SIZE
(
make_message
(
"hello"
,
"world"
));
}
CAF_TEST_FIXTURE_SCOPE_END
()
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