1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef DEVICE_USB_USB_CONTEXT_H_
6 #define DEVICE_USB_USB_CONTEXT_H_
8 #include "base/basictypes.h"
9 #include "base/memory/ref_counted.h"
10 #include "base/memory/scoped_ptr.h"
11 #include "base/threading/thread_checker.h"
13 struct libusb_context
;
17 typedef libusb_context
* PlatformUsbContext
;
19 // Ref-counted wrapper for libusb_context*.
20 // It also manages the life-cycle of UsbEventHandler.
21 // It is a blocking operation to delete UsbContext.
22 // Destructor must be called on FILE thread.
23 class UsbContext
: public base::RefCountedThreadSafe
<UsbContext
> {
25 PlatformUsbContext
context() const { return context_
; }
28 friend class UsbServiceImpl
;
29 friend class base::RefCountedThreadSafe
<UsbContext
>;
31 explicit UsbContext(PlatformUsbContext context
);
32 virtual ~UsbContext();
35 class UsbEventHandler
;
37 PlatformUsbContext context_
;
38 scoped_ptr
<UsbEventHandler
> event_handler_
;
39 base::ThreadChecker thread_checker_
;
41 DISALLOW_COPY_AND_ASSIGN(UsbContext
);
46 #endif // DEVICE_USB_USB_CONTEXT_H_