RemoteServer and PluginManager side would need complete redesign to be
data race free and concurrent. But as that would be unlikely to be
required from DFHack I decided simpler solution that is fixing data
ownership to a thread and all ServerConnection share a single lock which
allows access to PluginManager and Core.
Alter World to use Persistence instead of storing data in historical figures.
Fake historical figures will be converted to the new format when a world is loaded.
Added plugin_save and plugin_load functions to the plugin API.
Made the weird int7/int28 code that was in the old persistence API slightly safer.
This moves code intended to infer biome type currently living in a
couple of plugins into the Maps module, so that this code can be shared
more easily by multiple plugins, as discussed in #1392.
The runtime debug print filtering support dynamic debug print selection.
Tis patch only implements basic core support for filtering. The commands
to change the runtime filtering settings will be added in a following
patch.
But even with only this one can change filtering settings by editing
memory using a debugger. It can even be automated by using gdb break
point commands.
- Use port from remote-server.json in dfhack-run
- Make DFHACK_RUN environment variable take priority over remote-server.json
- Log current port to stderr
The bools could use acquire&release memory order or even relaxed but I
didn't think code was worth auditing for such low level optimizations.
Sequantial consistent is fast enough but much harder to use incorrectly.
The timeLast is protected by CoreSuspender lock. plugin_update is only
called when CoreSuspender lock is held.
The last_menu is protected by trackmenu_flg loads and stores.
The old CoreSuspender requires processing from Core::Update to allow
commands execute. But that causes issues if Core::Shutdown wants
quarentee cleanup order with std:🧵:join. Fixing shutdown ordering
adds too many branches to already fairly complex code.
I decided to try to refactor CoreSuspender to use simpler locking
locking using a std::recusive_muted as primary synchronization
primitive.
To help control when Core::Update unlocks the primary mutex there is
std::contition_variable_any and std::atomic<size_t> queue lenght
counter.
The last state variable is std::atomic<std:🧵:id> that is used to
keep track of owner thread for Core::IsSuspended query.
This should be merged only just after a release to make sure that it
gets maximum testing in develop branch before next release.
Fixes#1066
lethosor
Pauli
Ben Lubar
Kelly Kinkade
Lethosor
Stoyan Gaydarov