| // Copyright 2019 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef LIBMEMS_IIO_CONTEXT_H_ |
| #define LIBMEMS_IIO_CONTEXT_H_ |
| |
| #include <string> |
| |
| #include <base/macros.h> |
| |
| #include "libmems/export.h" |
| |
| namespace libmems { |
| |
| class IioDevice; |
| |
| // The IioContext is the root of the tree of IIO devices on the system. |
| // A context is - at its core - a container of devices, which can be |
| // retrieved via GetDevice(), providing the device's name as input. |
| class LIBMEMS_EXPORT IioContext { |
| public: |
| virtual ~IioContext() = default; |
| |
| // libiio loads the device list at context creation time, and does not |
| // have a way to update it as new devices appear on the system. |
| // This is a helper that allows a rescan of the system to find new devices |
| // dynamically at runtime. It should be called after any actions that cause |
| // new devices of interest to show up. |
| virtual void Reload() = 0; |
| |
| // Returns an IioDevice given the device's name or ID. |
| // Returns nullptr if the device cannot be found. |
| // The device object is guaranteed to stay valid as long as |
| // this context object is valid. |
| virtual IioDevice* GetDevice(const std::string& name) = 0; |
| |
| protected: |
| IioContext() = default; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(IioContext); |
| }; |
| |
| } // namespace libmems |
| |
| #endif // LIBMEMS_IIO_CONTEXT_H_ |