Superkaramba: add GPU load sensorr14.1.3

The sensor has a required `driver` parameter and an optional `gpu` parameter.
- The former specifies the backend to use to query the system about GPU load.
- The latter specifies the id of the GPU to check. If left out, the backend default will be used.

For now it only supports NVidia GPUs via the `nvidia` driver, but it can be extended.

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>
(cherry picked from commit 480f195dde7ef1fd9fd81ce0ea18924d81a4eda9)

1 files changed, 52 insertions, 0 deletions

diff --git a/superkaramba/src/gpusensor.h b/superkaramba/src/gpusensor.h
new file mode 100644
index 0000000..178e52e
--- /dev/null
+++ b/superkaramba/src/gpusensor.h
@@ -0,0 +1,52 @@
+/*******************************************************************************
+  GPU sensor
+  Copyright (C) 2024 Mavridis Philippe <mavridisf@gmail.com>
+
+  This program is free software: you can redistribute it and/or modify it under
+  the terms of the GNU General Public License as published by the Free Software
+  Foundation, either version 3 of the License, or (at your option) any later
+  version.
+
+  This program is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+  FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+  You should have received a copy of the GNU General Public License along with
+  this program. If not, see <http://www.gnu.org/licenses/>.
+
+  Improvements and feedback are welcome!
+*******************************************************************************/
+
+#ifndef GPUSENSOR_H
+#define GPUSENSOR_H
+
+// TDE
+#include <kprocess.h>
+
+// Superkaramba
+#include "sensor.h"
+
+class GPUSensor : public Sensor
+{
+    TQ_OBJECT
+
+    public:
+        GPUSensor(TQString driver, TQString gpuId, int interval = 1000);
+        ~GPUSensor();
+
+        void update();
+        void setMaxValue(SensorParams *sp);
+
+    protected:
+        TQString getLoad();
+
+    private:
+        TQString m_gpuDriver, m_gpuId, m_buffer;
+        TQStringList m_command;
+        TDEProcess m_proc;
+
+    public slots:
+        void receivedStdout(TDEProcess *proc, char *buffer, int buflen);
+        void processExited(TDEProcess *proc);
+};
+
+#endif // GPUSENSOR_H
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