Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
N
neo
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Labels
Merge Requests
2
Merge Requests
2
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Analytics
Analytics
CI / CD
Repository
Value Stream
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Jobs
Commits
Open sidebar
Kirill Smelkov
neo
Commits
a240c642
Commit
a240c642
authored
Aug 24, 2017
by
Kirill Smelkov
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
.
parent
53b77642
Changes
2
Hide whitespace changes
Inline
Side-by-side
Showing
2 changed files
with
56 additions
and
23 deletions
+56
-23
go/neo/client/cache.go
go/neo/client/cache.go
+21
-7
go/neo/client/cache_test.go
go/neo/client/cache_test.go
+35
-16
No files found.
go/neo/client/cache.go
View file @
a240c642
...
...
@@ -252,10 +252,7 @@ func (c *Cache) Load(xid zodb.Xid) (data []byte, tid zodb.Tid, err error) {
c
.
gcMu
.
Lock
()
rce
.
inLRU
.
MoveBefore
(
&
c
.
lru
)
c
.
gcMu
.
Unlock
()
// XXX for ErrXidMissing xtid needs to be adjusted to what was queried by user
return
rce
.
data
,
rce
.
serial
,
rce
.
err
return
rce
.
data
,
rce
.
serial
,
rce
.
userErr
(
xid
)
}
// entry was not in cache - this goroutine becomes responsible for loading it
...
...
@@ -287,7 +284,7 @@ func (c *Cache) Load(xid zodb.Xid) (data []byte, tid zodb.Tid, err error) {
// rce was already dropped by merge / evicted
// (XXX recheck about evicted)
oce
.
Unlock
()
return
rce
.
data
,
rce
.
serial
,
rce
.
err
return
rce
.
data
,
rce
.
serial
,
rce
.
userErr
(
xid
)
}
// if rce & rceNext cover the same range -> drop rce
...
...
@@ -320,7 +317,7 @@ func (c *Cache) Load(xid zodb.Xid) (data []byte, tid zodb.Tid, err error) {
}
c
.
gcMu
.
Unlock
()
return
rce
.
data
,
rce
.
serial
,
rce
.
err
return
rce
.
data
,
rce
.
serial
,
rce
.
userErr
(
xid
)
}
// tryMerge tries to merge rce prev into next
...
...
@@ -345,7 +342,9 @@ func tryMerge(prev, next, cur *revCacheEntry, oid zodb.Oid) bool {
// Pok Nok Ns < Pb Ps = Ns
// Pe Nok Ns < Pb Pe != "nodata" (e.g. it was IO loading error for P)
// Pok Ne ---
// Ne Pe (Pe="nodata") = (Ne="nodata")
// Ne Pe (Pe="nodata") = (Ne="nodata") -> XXX vs deleteObject?
// -> let deleted object actually read
// -> as special non-error value
//
// b - before
// s - serial
...
...
@@ -428,6 +427,21 @@ func (rce *revCacheEntry) loaded() bool {
}
}
// userErr returns error that, if any, needs to be returned to user from Cache.Load
//
// ( ErrXidMissing containts xid for which it is missing. In cache we keep such
// xid with max .before but users need to get ErrXidMissing with their own query )
func
(
rce
*
revCacheEntry
)
userErr
(
xid
zodb
.
Xid
)
error
{
switch
e
:=
rce
.
err
.
(
type
)
{
case
*
zodb
.
ErrXidMissing
:
if
e
.
Xid
!=
xid
{
return
&
zodb
.
ErrXidMissing
{
xid
}
}
}
return
rce
.
err
}
// revCacheEntry: .inLRU -> .
func
(
h
*
listHead
)
rceFromInLRU
()
(
rce
*
revCacheEntry
)
{
urce
:=
unsafe
.
Pointer
(
uintptr
(
unsafe
.
Pointer
(
h
))
-
unsafe
.
Offsetof
(
rce
.
inLRU
))
...
...
go/neo/client/cache_test.go
View file @
a240c642
...
...
@@ -80,12 +80,20 @@ func (s *tStorage) Load(xid zodb.Xid) (data []byte, serial zodb.Tid, err error)
var
tstor
=
&
tStorage
{
dataMap
:
map
[
zodb
.
Oid
][]
tOidData
{
1
:
{
{
3
,
[]
byte
(
"hello"
)},
{
4
,
[]
byte
(
"hello"
)},
{
7
,
[]
byte
(
"world"
)},
},
},
}
func
xidlt
(
oid
zodb
.
Oid
,
tid
zodb
.
Tid
)
zodb
.
Xid
{
return
zodb
.
Xid
{
Oid
:
oid
,
XTid
:
zodb
.
XTid
{
Tid
:
tid
,
TidBefore
:
true
}}
}
func
xideq
(
oid
zodb
.
Oid
,
tid
zodb
.
Tid
)
zodb
.
Xid
{
return
zodb
.
Xid
{
Oid
:
oid
,
XTid
:
zodb
.
XTid
{
Tid
:
tid
,
TidBefore
:
false
}}
}
func
TestCache
(
t
*
testing
.
T
)
{
// XXX <100 <90 <80
// q<110 -> a) 110 <= cache.before b) otherwise
...
...
@@ -107,28 +115,39 @@ func TestCache(t *testing.T) {
// XXX hack; place=ok?
pretty
.
CompareConfig
.
PrintStringers
=
true
xid1
:=
zodb
.
Xid
{
Oid
:
1
,
XTid
:
zodb
.
XTid
{
Tid
:
2
,
TidBefore
:
true
}}
data
,
serial
,
err
:=
c
.
Load
(
xid
1
)
// -> nil, 0, &zodb.ErrXidMissing{1,<2}
// XXX vvv -> checkLoad()
data
,
serial
,
err
:=
c
.
Load
(
xid
lt
(
1
,
3
))
ok1
(
data
==
nil
)
ok1
(
serial
==
0
)
eq
(
err
,
&
zodb
.
ErrXidMissing
{
xid
1
})
eq
(
err
,
&
zodb
.
ErrXidMissing
{
xid
lt
(
1
,
3
)
})
oce1
:=
c
.
entryMap
[
1
]
ok1
(
len
(
oce1
.
revv
)
==
1
)
rce1_b2
:=
oce1
.
revv
[
0
]
ok1
(
rce1_b2
.
before
==
2
)
ok1
(
rce1_b2
.
serial
==
0
)
eq
(
rce1_b2
.
err
,
&
zodb
.
ErrXidMissing
{
xid1
})
// XXX must be 1, ?0
xid1_3
:=
xid1
xid1_3
.
Tid
=
3
data
,
serial
,
err
=
c
.
Load
(
xid1_3
)
// -> nil, 0, zodb.ErrXidMissing{1,<3}
// XXX vvv -> checkRCE ?
rce1_b3
:=
oce1
.
revv
[
0
]
ok1
(
rce1_b3
.
before
==
3
)
ok1
(
rce1_b3
.
serial
==
0
)
eq
(
rce1_b3
.
err
,
&
zodb
.
ErrXidMissing
{
xidlt
(
1
,
3
)})
// XXX must be 1, ?0
data
,
serial
,
err
=
c
.
Load
(
xidlt
(
1
,
4
))
ok1
(
data
==
nil
)
ok1
(
serial
==
0
)
eq
(
err
,
&
zodb
.
ErrXidMissing
{
xidlt
(
1
,
4
)})
ok1
(
len
(
oce1
.
revv
)
==
1
)
rce1_b4
:=
oce1
.
revv
[
0
]
ok1
(
rce1_b4
!=
rce1_b3
)
// rce1_b3 was merged into rce1_b4
ok1
(
rce1_b4
.
before
==
4
)
ok1
(
rce1_b4
.
serial
==
0
)
eq
(
rce1_b4
.
err
,
&
zodb
.
ErrXidMissing
{
xidlt
(
1
,
4
)})
// XXX must be 1, ?0
// XXX load <2 -> check it is merged with <4 XXX vs deleteObject?
data
,
serial
,
err
=
c
.
Load
(
xidlt
(
1
,
2
))
ok1
(
data
==
nil
)
ok1
(
serial
==
0
)
eq
(
err
,
&
zodb
.
ErrXidMissing
{
xid1_3
})
eq
(
len
(
oce1
.
revv
),
1
)
rce1_b3
:=
oce1
.
revv
[
0
]
ok1
(
rce1_b3
!=
rce1_b2
)
// rce1_b2 was merged into rce1_b3
fmt
.
Println
(
err
)
eq
(
err
,
&
zodb
.
ErrXidMissing
{
xidlt
(
1
,
2
)})
}
type
Checker
struct
{
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment