Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
W
wendelin.core
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Labels
Merge Requests
0
Merge Requests
0
Analytics
Analytics
Repository
Value Stream
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Commits
Open sidebar
Kirill Smelkov
wendelin.core
Commits
323ba50c
Commit
323ba50c
authored
Mar 10, 2020
by
Kirill Smelkov
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
.
parent
97befba7
Changes
1
Show whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
54 additions
and
49 deletions
+54
-49
wcfs/client/wcfs_watchlink.cpp
wcfs/client/wcfs_watchlink.cpp
+54
-49
No files found.
wcfs/client/wcfs_watchlink.cpp
View file @
323ba50c
...
...
@@ -211,6 +211,60 @@ error _WatchLink::_serveRX(context::Context ctx) {
}
}
// recvReq receives client <- server request.
//
// it returns EOF when server closes the link.
static
error
_parsePinReq
(
PinReq
*
pin
,
const
rxPkt
*
pkt
);
error
_WatchLink
::
recvReq
(
context
::
Context
ctx
,
PinReq
*
prx
)
{
_WatchLink
&
wlink
=
*
this
;
xerr
::
Contextf
E
(
"%s: recvReq"
,
v
(
wlink
));
rxPkt
pkt
;
bool
ok
;
int
_
=
select
({
ctx
->
done
().
recvs
(),
// 0
wlink
.
_acceptq
.
recvs
(
&
pkt
,
&
ok
),
// 1
});
if
(
_
==
0
)
return
E
(
ctx
->
err
());
if
(
!
ok
)
return
io
::
EOF_
;
// NOTE EOF goes without E
return
E
(
_parsePinReq
(
prx
,
&
pkt
));
}
// replyReq sends reply to client <- server request received by recvReq.
error
_WatchLink
::
replyReq
(
context
::
Context
ctx
,
const
PinReq
*
req
,
const
string
&
answer
)
{
_WatchLink
&
wlink
=
*
this
;
xerr
::
Contextf
E
(
"%s: replyReq .%d"
,
v
(
wlink
),
req
->
stream
);
//print('C: reply %s <- %r ...' % (req, answer))
wlink
.
_rxmu
.
lock
();
bool
ok
=
wlink
.
_accepted
.
has
(
req
->
stream
);
wlink
.
_rxmu
.
unlock
();
if
(
!
ok
)
panic
(
"reply to not accepted stream"
);
error
err
=
wlink
.
_send
(
req
->
stream
,
answer
);
wlink
.
_rxmu
.
lock
();
ok
=
wlink
.
_accepted
.
has
(
req
->
stream
);
if
(
ok
)
wlink
.
_accepted
.
erase
(
req
->
stream
);
wlink
.
_rxmu
.
unlock
();
if
(
!
ok
)
panic
(
"BUG: stream vanished from wlink._accepted while reply was in progress"
);
// TODO also track as answered? (and don't accept with the same ID ?)
return
E
(
err
);
}
// _send sends raw message via specified stream.
//
// multiple _send can be called in parallel - _send serializes writes.
...
...
@@ -322,55 +376,6 @@ tuple</*rxq*/chan<rxPkt>, error> _WatchLink::_sendReq(context::Context ctx, cons
return
make_tuple
(
rxq
,
err
);
}
// replyReq sends reply to client <- server request received by recvReq.
error
_WatchLink
::
replyReq
(
context
::
Context
ctx
,
const
PinReq
*
req
,
const
string
&
answer
)
{
_WatchLink
&
wlink
=
*
this
;
xerr
::
Contextf
E
(
"%s: replyReq .%d"
,
v
(
wlink
),
req
->
stream
);
//print('C: reply %s <- %r ...' % (req, answer))
wlink
.
_rxmu
.
lock
();
bool
ok
=
wlink
.
_accepted
.
has
(
req
->
stream
);
wlink
.
_rxmu
.
unlock
();
if
(
!
ok
)
panic
(
"reply to not accepted stream"
);
error
err
=
wlink
.
_send
(
req
->
stream
,
answer
);
wlink
.
_rxmu
.
lock
();
ok
=
wlink
.
_accepted
.
has
(
req
->
stream
);
if
(
ok
)
wlink
.
_accepted
.
erase
(
req
->
stream
);
wlink
.
_rxmu
.
unlock
();
if
(
!
ok
)
panic
(
"BUG: stream vanished from wlink._accepted while reply was in progress"
);
// TODO also track as answered? (and don't accept with the same ID ?)
return
E
(
err
);
}
// recvReq receives client <- server request.
//
// it returns EOF when server closes the link.
static
error
_parsePinReq
(
PinReq
*
pin
,
const
rxPkt
*
pkt
);
error
_WatchLink
::
recvReq
(
context
::
Context
ctx
,
PinReq
*
prx
)
{
_WatchLink
&
wlink
=
*
this
;
xerr
::
Contextf
E
(
"%s: recvReq"
,
v
(
wlink
));
rxPkt
pkt
;
bool
ok
;
int
_
=
select
({
ctx
->
done
().
recvs
(),
// 0
wlink
.
_acceptq
.
recvs
(
&
pkt
,
&
ok
),
// 1
});
if
(
_
==
0
)
return
E
(
ctx
->
err
());
if
(
!
ok
)
return
io
::
EOF_
;
// NOTE EOF goes without E
return
E
(
_parsePinReq
(
prx
,
&
pkt
));
}
// _parsePinReq parses message into PinReq according to wcfs isolation protocol.
static
error
_parsePinReq
(
PinReq
*
pin
,
const
rxPkt
*
pkt
)
{
...
...
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