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- // Copyright 2014 The Chromium 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 SERVICES_DEVICE_USB_USB_CONTEXT_H_
- #define SERVICES_DEVICE_USB_USB_CONTEXT_H_
- #include <memory>
- #include "base/memory/ref_counted.h"
- #include "base/threading/thread_checker.h"
- struct libusb_context;
- namespace device {
- typedef libusb_context* PlatformUsbContext;
- // Ref-counted wrapper for libusb_context*.
- // It also manages the life-cycle of UsbEventHandler.
- // It is a blocking operation to delete UsbContext.
- // Destructor must be called on FILE thread.
- class UsbContext : public base::RefCountedThreadSafe<UsbContext> {
- public:
- explicit UsbContext(PlatformUsbContext context);
- UsbContext(const UsbContext&) = delete;
- UsbContext& operator=(const UsbContext&) = delete;
- PlatformUsbContext context() const { return context_; }
- protected:
- friend class base::RefCountedThreadSafe<UsbContext>;
- virtual ~UsbContext();
- private:
- class UsbEventHandler;
- PlatformUsbContext context_;
- std::unique_ptr<UsbEventHandler> event_handler_;
- };
- } // namespace device
- #endif // SERVICES_DEVICE_USB_USB_CONTEXT_H_
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