co_usb::device_ref Struct Reference

Wrapper for nullable libusb_device that increments ref count on ctor and decrements on dtor. More...

#include <device_ref.hpp>

Public Member Functions
	device_ref () noexcept
	constructs a null ref
	device_ref (libusb_device *dev) noexcept
	constructs a new ref object and increments ref count of underlying device
	~device_ref () noexcept
	device_ref (const device_ref &) noexcept
device_ref &	operator= (const device_ref &) noexcept
libusb_device *	get () const noexcept

Detailed Description

Wrapper for nullable libusb_device that increments ref count on ctor and decrements on dtor.

Objects of this type must be used for returning devices from hotplug callbacks since normally devices obtained through this callback will expire unless their ref count was incremented.

Constructor & Destructor Documentation

device_ref() [1/3]

co_usb::device_ref::device_ref ( )

noexcept

constructs a null ref

device_ref() [2/3]

co_usb::device_ref::device_ref ( libusb_device *  dev )

explicitnoexcept

constructs a new ref object and increments ref count of underlying device

~device_ref()

co_usb::device_ref::~device_ref ( )

noexcept

device_ref() [3/3]

co_usb::device_ref::device_ref ( const device_ref &  other )

noexcept

Member Function Documentation

get()

libusb_device * co_usb::device_ref::get ( ) const

noexcept

Returns

underlying pointer to libusb_device

operator=()

co_usb::device_ref & co_usb::device_ref::operator= ( const device_ref &  other )

noexcept

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The documentation for this struct was generated from the following files:

• /home/runner/work/co_usb/co_usb/include/co_usb/device_ref.hpp
• /home/runner/work/co_usb/co_usb/src/device_ref.cpp