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Joshua
wendelin.core
Commits
e19d6686
Commit
e19d6686
authored
Oct 23, 2019
by
Kirill Smelkov
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parent
79113e49
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54 additions
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3 deletions
+54
-3
wcfs/internal/wcfs_virtmem.cpp
wcfs/internal/wcfs_virtmem.cpp
+54
-3
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wcfs/internal/wcfs_virtmem.cpp
View file @
e19d6686
...
@@ -35,6 +35,7 @@ using namespace golang;
...
@@ -35,6 +35,7 @@ using namespace golang;
#include <wendelin/bug.h>
#include <wendelin/bug.h>
#include <unordered_map>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <vector>
#include <sys/types.h>
#include <sys/types.h>
...
@@ -50,6 +51,9 @@ using namespace golang;
...
@@ -50,6 +51,9 @@ using namespace golang;
template
<
typename
Key
,
typename
Value
>
template
<
typename
Key
,
typename
Value
>
using
dict
=
std
::
unordered_map
<
Key
,
Value
>
;
using
dict
=
std
::
unordered_map
<
Key
,
Value
>
;
template
<
typename
Key
>
using
set
=
std
::
unordered_set
<
Key
>
;
using
std
::
vector
;
using
std
::
vector
;
typedef
uint64_t
Tid
;
// XXX ok?
typedef
uint64_t
Tid
;
// XXX ok?
...
@@ -134,10 +138,36 @@ struct _Mapping {
...
@@ -134,10 +138,36 @@ struct _Mapping {
};
};
// XXX struct WatchLink
// WatchLink represents /head/watch link opened on wcfs.
struct
WatchLink
{
//
// XXX
// It is created by WCFS::_openwatch().
//
// .sendReq()/.recvReq() provides raw IO in terms of wcfs invalidation protocol messages.
// .close() closes the link.
//
// It is safe to use WatchLink from multiple threads simultaneously.
class
WatchLink
{
WCFS
*
_wc
;
os
::
File
_f
;
// head/watch file handle
chan
<
structZ
>
_rxeof
;
// becomes ready when wcfs closes its tx side
// inv.protocol message IO
_acceptq
=
chan
()
// (stream, msg) server originated messages go here
sync
::
Mutex
_rxmu
;
dict
<
stream
,
chan
<
XXX
>>
_rxtab
;
// {} stream -> rxq server replies go via here
set
<
stream
>
_accepted
;
// streams we accepted but did not replied yet
XXXint
_req_next
=
1
;
// stream ID for next client-originated request XXX -> atomic
sync
::
Mutex
_txmu
// serializes writes
bool
_txclosed
;
// XXX = False
#if 0
serveCtx, wlink._serveCancel = context.with_cancel(context.background())
wlink._serveWG = sync.WorkGroup(serveCtx)
wlink._serveWG.go(wlink._serveRX)
#endif
public:
SrvReq
*
recvReq
(
IContext
*
ctx
);
SrvReq
*
recvReq
(
IContext
*
ctx
);
};
};
...
@@ -160,6 +190,9 @@ Conn *WCFS::connect(Tid at) {
...
@@ -160,6 +190,9 @@ Conn *WCFS::connect(Tid at) {
wconn
->
_wc
=
wc
;
wconn
->
_wc
=
wc
;
wconn
->
at
=
at
;
wconn
->
at
=
at
;
// wconn._wlink = WatchLink(wc) XXX
// wconn._wlink = WatchLink(wc) XXX
tie
(
wcomm
.
_wlink
,
err
)
=
wc
->
_openwatch
();
// XXX err
// XXX reenable
// XXX reenable
#if 0
#if 0
...
@@ -291,6 +324,24 @@ error _Mapping::_remmapblk(int64_t blk, Tid at) {
...
@@ -291,6 +324,24 @@ error _Mapping::_remmapblk(int64_t blk, Tid at) {
}
}
// _openwatch opens new watch link on wcfs.
// XXX WatchLink* -> no ptr?
tuple
<
WatchLink
*
,
error
>
WCFS
::
_openwatch
()
{
WCFS
*
wc
=
this
;
// head/watch handle.
tie
(
f
,
err
)
=
wc
->
_open
(
"head/watch"
,
O_RDWR
);
if
(
err
!=
nil
)
return
make_tuple
(
NULL
,
err
);
wlink
=
new
(
WatchLink
);
wlink
->
_wc
=
wc
;
wlink
->
_f
=
f
;
wlink
->
rx_eof
=
makechan
<
structZ
>
();
}
// XXX close
// ---- WCFS raw file access ----
// ---- WCFS raw file access ----
// _path returns path for object on wcfs.
// _path returns path for object on wcfs.
...
...
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