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41 Commits

Author SHA1 Message Date
Thad House
c0ce4270f0 Adds a way to cancel a blocking rpc call (#94) 2016-08-16 23:31:45 -07:00
Thad House
a786470623 Only allows 1 blocking call per Rpc Call Id (#93) 2016-08-15 22:46:49 -07:00
Thad House
0b80bd2b09 Adds timeout capabilities to blocking Rpc Calls (#86) 2016-08-15 20:24:07 -07:00
Peter Johnson
a73166a665 Make many more utility classes/headers public. (#76) 
Moving these headers from src to include enables other libraries to use the
functionality provided.

* tcpsockets
* atomic_static
* raw_istream
* timestamp
* SafeThread
* Base64
* LEB128
* ConcurrentQueue

The classes have been moved into the wpi namespace as they're generic.
 2016-07-27 00:39:38 -07:00
Thad House
58092c5190 Adds SetDefault methods to NetworkTables (#54) 
There was no way to atomically check for a key in the table,
and then setting if it if non existant. Back before persistent
this was not a problem, however now it is, as its possible for
values to be added before team's robot programs start. This makes
the old method of calling Put*** methods in RobotInit invalid.
This adds SetDefault methods, which do this atomically.
 2016-07-13 00:31:03 -07:00
Peter Johnson
4b516de183 Don't delete persistent entries in DeleteAllEntries. (#71) 
This is a behavior change but without it DeleteAllEntries is dangerous and
not very useful, so I consider the current behavior to be a bug.
 2016-06-17 22:33:02 -07:00
Peter Johnson
b488cdd6ff Support immediate notify of connection listener. 
Also only perform immediate notification to the callback actually
requesting the notification, not all existing callbacks.

Offset returned uids by 1 so uid=0 can be used to indicate immediate
notification.
 2015-08-28 00:13:56 -07:00
Peter Johnson
2d1bc2f4c7 Uninline constructors to reduce GetInstance() inlined code size. 2015-08-19 21:49:18 -07:00
Peter Johnson
ca9ce0f3a3 Implement automatic persistent saves. 
Also loads persistent file on server start.
 2015-08-19 19:18:09 -07:00
Peter Johnson
8d7cdeabbf Implement remote procedure calls. 2015-08-13 21:32:16 -07:00
Peter Johnson
e9073a3cc0 Implement notifiers. 
The notifier thread is lazily started when the first notifier is added.
This avoids the extra thread/processing overhead when notifiers are not used.
 2015-08-02 21:47:01 -07:00
Peter Johnson
35e6400174 Storage: Add vector include. 2015-08-01 16:33:39 -07:00
Peter Johnson
67de7af7b2 Storage: Use unique_ptr instead of shared_ptr for Entry. 2015-08-01 11:47:35 -07:00
Peter Johnson
11508b77d1 Ensure initial synchronization is atomic. 2015-07-31 23:56:06 -07:00
Peter Johnson
ead125555c Implement client/server handshaking. 2015-07-31 20:32:52 -07:00
Peter Johnson
cde7782c21 Make StorageEntry a struct and move into Storage class. 2015-07-31 13:48:33 -07:00
Peter Johnson
138ebf5b4d Storage: generate messages rather than intermediate updates. 2015-07-31 13:21:19 -07:00
Peter Johnson
83be99e78c Immediately process incoming messages. 
This required moving message processing into the Storage class.
 2015-07-29 23:45:04 -07:00
Peter Johnson
f6576b18f7 Storage: Add more Dispatcher accessors. 2015-07-29 20:33:13 -07:00
Peter Johnson
c01f2977ac StorageEntry: Make value() const. 2015-07-28 22:29:58 -07:00
Peter Johnson
5823e3c780 Storage: Add CreateEntry function for Dispatcher use. 2015-07-28 22:06:42 -07:00
Peter Johnson
a0d30ffef1 Storage: Use StringMap instead of ConcurrentQueue for updates. 
Updates are merged or themselves updated as user code changes.  This avoids
the need for the dispatcher to do this and also avoids the need for disabling
updates when the dispatcher isn't running, because there's no risk of memory
usage piling up.
 2015-07-26 20:41:48 -07:00
Peter Johnson
fb1b82e239 StorageEntry: Also store copy of name here. 
This wastes a bit of space but is necessary for assign message generation.
 2015-07-26 10:28:20 -07:00
Peter Johnson
3bc5699ba1 Storage: Provide accessor for global mutex. 2015-07-26 09:42:14 -07:00
Peter Johnson
18659257d3 Storage: Make setters globally atomic. 
Previously, setters were locally but not globally atomic because they
used GetEntry() (globally atomic) in conjunction with locally atomic
gets/sets to the StorageEntry.  To support synchronizing network handshakes
they need to be globally atomic.

GetEntry() has been removed due to this issue, so a helper was added to
StorageTest instead.
 2015-07-26 09:27:23 -07:00
Peter Johnson
4aa2d65bba Storage: Use std::forward and emplace for updates. 2015-07-21 22:43:44 -07:00
Peter Johnson
b4c65dc210 Make global instance init thread-safe. 
Use local statics except for Visual C++ < 2015.
 2015-07-20 23:36:22 -07:00
Peter Johnson
5df62ac172 Storage: Disable use of update queue by default. 
This ensures we don't "leak" memory for local use when the dispatch thread
is not running.
 2015-07-20 22:24:47 -07:00
Peter Johnson
0979c1c9ca Storage, NetworkConnection: Don't in-place construct atomics. 
Visual C++ 2013 doesn't support this.
 2015-07-20 20:52:26 -07:00
Peter Johnson
21b7acc397 Storage: Make testable, make EntriesMap typedef private. 2015-07-19 16:36:30 -07:00
Peter Johnson
0a18d2e57b Storage: Make individual entries thread safe. 
Also use shared_ptr to refer to entries rather than names.
 2015-07-19 16:02:21 -07:00
Peter Johnson
2437f06c7f Implement majority of Storage functionality. 
It's also now thread-safe.
 2015-07-18 01:29:51 -07:00
Peter Johnson
d05656b716 StorageEntry: Make data public, remove accessors. 
Also add id and seq_num fields.
 2015-07-17 23:41:25 -07:00
Peter Johnson
fcbd2751ba Provide C++ API. Move all classes to "nt" namespace. 
The C API is now just simple wrappers around the C++ API.
 2015-07-17 07:21:07 -07:00
Peter Johnson
9906116d23 Don't base Value on NT_Value. 
Also use std::string instead of NT_String.

Conversions to/from the internal structures will be done at the interface.
 2015-07-16 01:38:27 -07:00
Peter Johnson
4d3fb3c497 Storage: Use unique_ptr for instance. 2015-07-14 23:15:08 -07:00
Peter Johnson
f6deafee22 Add type-safe wrapper around NT_Value and NT_String. 
Change-Id: Ib7ef5a6de9c8c7a1f5f6432083d1fb38328438dc
 2015-07-11 09:33:33 -07:00
Peter Johnson
8d6a0786c8 Move all C api functions to ntcore.cpp. 
Change-Id: I17b4f5fec30ecd684cf04af2bbd6b7346bfcd683
 2015-07-11 09:33:33 -07:00
Peter Johnson
9ee3070667 Storage: Make entries private, add accessors. 
Use range-based for in SavePersistent.

Change-Id: If43ed97379114b3bf8a5e95da99103791cd09d4d
 2015-07-11 09:33:33 -07:00
Peter Johnson
69e91244f4 Rename make_StringRef to MakeStringRef. 
Change-Id: I18ca471c6e31f79956bcab9d4405afc355238a8f
 2015-07-11 09:33:33 -07:00
Peter Johnson
d7ca3343bc File renames. 
Change-Id: I3fa88f94593941a25f65eaabfcbbca2428613e6c
 2015-07-11 09:33:33 -07:00