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FairMQ: Implement Take/ReleaseDeviceControl plugin API

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The main function of this API is to make sure only one plugin is
controlling the device state transitions at a time. The
ReleaseDeviceControl() signal is used to implement a function
WaitForPluginsToReleaseDeviceControl() which is used to block the main
thread if a control plugin is used.
This commit is contained in:
Dennis Klein
2017-09-13 21:34:50 +02:00
committed by Mohammad Al-Turany
parent dfb2bac4bc
commit 2af3ae99eb
5 changed files with 143 additions and 16 deletions
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7
fairmq/Plugin.h
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@@ -67,12 +67,11 @@ class Plugin
auto ToDeviceState(const std::string& state) const -> DeviceState { return fPluginServices->ToDeviceState(state); }
auto ToStr(DeviceState state) const -> std::string { return fPluginServices->ToStr(state); }
auto GetCurrentDeviceState() const -> DeviceState { return fPluginServices->GetCurrentDeviceState(); }
auto ChangeDeviceState(const DeviceStateTransition next) -> void { fPluginServices->ChangeDeviceState(next); }
auto TakeDeviceControl() -> void { fPluginServices->TakeDeviceControl(fkName); };
auto ReleaseDeviceControl() -> void { fPluginServices->ReleaseDeviceControl(fkName); };
auto ChangeDeviceState(const DeviceStateTransition next) -> void { fPluginServices->ChangeDeviceState(fkName, next); }
auto SubscribeToDeviceStateChange(std::function<void(DeviceState)> callback) -> void { fPluginServices->SubscribeToDeviceStateChange(fkName, callback); }
auto UnsubscribeFromDeviceStateChange() -> void { fPluginServices->UnsubscribeFromDeviceStateChange(fkName); }
auto TakeControl() -> void { fPluginServices->TakeControl(fkName); };
auto ReleaseControl() -> void { fPluginServices->ReleaseControl(fkName); };
// device config API
// see <fairmq/PluginServices.h> for docs
template<typename T>