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211a195d
R
rocksdb
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rocksdb
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211a195d
编写于
6月 03, 2015
作者:
R
Reed Allman
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
C: add MultiGet support
上级
a187e66a
变更
3
显示空白变更内容
内联
并排
Showing
3 changed file
with
143 addition
and
2 deletion
+143
-2
db/c.cc
db/c.cc
+63
-1
db/c_test.c
db/c_test.c
+52
-1
include/rocksdb/c.h
include/rocksdb/c.h
+28
-0
未找到文件。
db/c.cc
浏览文件 @
211a195d
...
...
@@ -836,6 +836,69 @@ char* rocksdb_get_cf(
return
result
;
}
void
rocksdb_multi_get
(
rocksdb_t
*
db
,
const
rocksdb_readoptions_t
*
options
,
size_t
num_keys
,
const
char
*
const
*
keys_list
,
const
size_t
*
keys_list_sizes
,
char
**
values_list
,
size_t
*
values_list_sizes
,
char
**
errs
)
{
std
::
vector
<
Slice
>
keys
(
num_keys
);
for
(
size_t
i
=
0
;
i
<
num_keys
;
i
++
)
{
keys
[
i
]
=
Slice
(
keys_list
[
i
],
keys_list_sizes
[
i
]);
}
std
::
vector
<
std
::
string
>
values
(
num_keys
);
std
::
vector
<
Status
>
statuses
=
db
->
rep
->
MultiGet
(
options
->
rep
,
keys
,
&
values
);
for
(
size_t
i
=
0
;
i
<
num_keys
;
i
++
)
{
if
(
statuses
[
i
].
ok
())
{
values_list
[
i
]
=
CopyString
(
values
[
i
]);
values_list_sizes
[
i
]
=
values
[
i
].
size
();
errs
[
i
]
=
nullptr
;
}
else
{
values_list
[
i
]
=
nullptr
;
values_list_sizes
[
i
]
=
0
;
if
(
!
statuses
[
i
].
IsNotFound
())
{
errs
[
i
]
=
strdup
(
statuses
[
i
].
ToString
().
c_str
());
}
else
{
errs
[
i
]
=
nullptr
;
}
}
}
}
void
rocksdb_multi_get_cf
(
rocksdb_t
*
db
,
const
rocksdb_readoptions_t
*
options
,
const
rocksdb_column_family_handle_t
*
const
*
column_families
,
size_t
num_keys
,
const
char
*
const
*
keys_list
,
const
size_t
*
keys_list_sizes
,
char
**
values_list
,
size_t
*
values_list_sizes
,
char
**
errs
)
{
std
::
vector
<
Slice
>
keys
(
num_keys
);
std
::
vector
<
ColumnFamilyHandle
*>
cfs
(
num_keys
);
for
(
size_t
i
=
0
;
i
<
num_keys
;
i
++
)
{
keys
[
i
]
=
Slice
(
keys_list
[
i
],
keys_list_sizes
[
i
]);
cfs
[
i
]
=
column_families
[
i
]
->
rep
;
}
std
::
vector
<
std
::
string
>
values
(
num_keys
);
std
::
vector
<
Status
>
statuses
=
db
->
rep
->
MultiGet
(
options
->
rep
,
cfs
,
keys
,
&
values
);
for
(
size_t
i
=
0
;
i
<
num_keys
;
i
++
)
{
if
(
statuses
[
i
].
ok
())
{
values_list
[
i
]
=
CopyString
(
values
[
i
]);
values_list_sizes
[
i
]
=
values
[
i
].
size
();
errs
[
i
]
=
nullptr
;
}
else
{
values_list
[
i
]
=
nullptr
;
values_list_sizes
[
i
]
=
0
;
if
(
!
statuses
[
i
].
IsNotFound
())
{
errs
[
i
]
=
strdup
(
statuses
[
i
].
ToString
().
c_str
());
}
else
{
errs
[
i
]
=
nullptr
;
}
}
}
}
rocksdb_iterator_t
*
rocksdb_create_iterator
(
rocksdb_t
*
db
,
const
rocksdb_readoptions_t
*
options
)
{
...
...
@@ -1766,7 +1829,6 @@ void rocksdb_options_set_fifo_compaction_options(
/*
TODO:
DB::OpenForReadOnly
DB::MultiGet
DB::KeyMayExist
DB::GetOptions
DB::GetSortedWalFiles
...
...
db/c_test.c
浏览文件 @
211a195d
...
...
@@ -505,6 +505,33 @@ int main(int argc, char** argv) {
rocksdb_iter_destroy
(
iter
);
}
StartPhase
(
"multiget"
);
{
const
char
*
keys
[
3
]
=
{
"box"
,
"foo"
,
"notfound"
};
const
size_t
keys_sizes
[
3
]
=
{
3
,
3
,
8
};
char
*
vals
[
3
];
size_t
vals_sizes
[
3
];
char
*
errs
[
3
];
rocksdb_multi_get
(
db
,
roptions
,
3
,
keys
,
keys_sizes
,
vals
,
vals_sizes
,
errs
);
int
i
;
for
(
i
=
0
;
i
<
3
;
i
++
)
{
CheckEqual
(
NULL
,
errs
[
i
],
0
);
switch
(
i
)
{
case
0
:
CheckEqual
(
"c"
,
vals
[
i
],
vals_sizes
[
i
]);
break
;
case
1
:
CheckEqual
(
"hello"
,
vals
[
i
],
vals_sizes
[
i
]);
break
;
case
2
:
CheckEqual
(
NULL
,
vals
[
i
],
vals_sizes
[
i
]);
break
;
}
Free
(
&
vals
[
i
]);
}
}
StartPhase
(
"approximate_sizes"
);
{
int
i
;
...
...
@@ -778,12 +805,36 @@ int main(int argc, char** argv) {
CheckGetCF
(
db
,
roptions
,
handles
[
1
],
"box"
,
"c"
);
rocksdb_writebatch_destroy
(
wb
);
const
char
*
keys
[
3
]
=
{
"box"
,
"box"
,
"bar"
};
const
rocksdb_column_family_handle_t
*
get_handles
[
3
]
=
{
handles
[
0
],
handles
[
1
],
handles
[
1
]
};
const
size_t
keys_sizes
[
3
]
=
{
3
,
3
,
8
};
char
*
vals
[
3
];
size_t
vals_sizes
[
3
];
char
*
errs
[
3
];
rocksdb_multi_get_cf
(
db
,
roptions
,
get_handles
,
3
,
keys
,
keys_sizes
,
vals
,
vals_sizes
,
errs
);
int
i
;
for
(
i
=
0
;
i
<
3
;
i
++
)
{
CheckEqual
(
NULL
,
errs
[
i
],
0
);
switch
(
i
)
{
case
0
:
CheckEqual
(
NULL
,
vals
[
i
],
vals_sizes
[
i
]);
// wrong cf
break
;
case
1
:
CheckEqual
(
"c"
,
vals
[
i
],
vals_sizes
[
i
]);
// bingo
break
;
case
2
:
CheckEqual
(
NULL
,
vals
[
i
],
vals_sizes
[
i
]);
// normal not found
break
;
}
Free
(
&
vals
[
i
]);
}
rocksdb_iterator_t
*
iter
=
rocksdb_create_iterator_cf
(
db
,
roptions
,
handles
[
1
]);
CheckCondition
(
!
rocksdb_iter_valid
(
iter
));
rocksdb_iter_seek_to_first
(
iter
);
CheckCondition
(
rocksdb_iter_valid
(
iter
));
int
i
;
for
(
i
=
0
;
rocksdb_iter_valid
(
iter
)
!=
0
;
rocksdb_iter_next
(
iter
))
{
i
++
;
}
...
...
include/rocksdb/c.h
浏览文件 @
211a195d
...
...
@@ -264,6 +264,34 @@ extern char* rocksdb_get_cf(
size_t
*
vallen
,
char
**
errptr
);
// if values_list[i] == NULL and errs[i] == NULL,
// then we got status.IsNotFound(), which we will not return.
// all errors except status status.ok() and status.IsNotFound() are returned.
//
// errs, values_list and values_list_sizes must be num_keys in length,
// allocated by the caller.
// errs is a list of strings as opposed to the conventional one error,
// where errs[i] is the status for retrieval of keys_list[i].
// each non-NULL errs entry is a malloc()ed, null terminated string.
// each non-NULL values_list entry is a malloc()ed array, with
// the length for each stored in values_list_sizes[i].
extern
void
rocksdb_multi_get
(
rocksdb_t
*
db
,
const
rocksdb_readoptions_t
*
options
,
size_t
num_keys
,
const
char
*
const
*
keys_list
,
const
size_t
*
keys_list_sizes
,
char
**
values_list
,
size_t
*
values_list_sizes
,
char
**
errs
);
extern
void
rocksdb_multi_get_cf
(
rocksdb_t
*
db
,
const
rocksdb_readoptions_t
*
options
,
const
rocksdb_column_family_handle_t
*
const
*
column_families
,
size_t
num_keys
,
const
char
*
const
*
keys_list
,
const
size_t
*
keys_list_sizes
,
char
**
values_list
,
size_t
*
values_list_sizes
,
char
**
errs
);
extern
rocksdb_iterator_t
*
rocksdb_create_iterator
(
rocksdb_t
*
db
,
const
rocksdb_readoptions_t
*
options
);
...
...
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