| // 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 DEVICE_USB_USB_CONTEXT_H_ |
| #define DEVICE_USB_USB_CONTEXT_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.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: |
| PlatformUsbContext context() const { return context_; } |
| |
| protected: |
| friend class UsbServiceImpl; |
| friend class base::RefCountedThreadSafe<UsbContext>; |
| |
| explicit UsbContext(PlatformUsbContext context); |
| virtual ~UsbContext(); |
| |
| private: |
| class UsbEventHandler; |
| |
| PlatformUsbContext context_; |
| scoped_ptr<UsbEventHandler> event_handler_; |
| base::ThreadChecker thread_checker_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UsbContext); |
| }; |
| |
| } // namespace device |
| |
| #endif // DEVICE_USB_USB_CONTEXT_H_ |