`Concurrency` namespace enums (AMP)

The following enumerations are available in the Concurrency namespace:

`access_type` enumeration

enum access_type;

Name	Description
`access_type_auto`	Automatically choose the best `access_type` for the accelerator.
`access_type_none`	Dedicated. The allocation is only accessible on the accelerator and not on the CPU.
`access_type_read`	Shared. The allocation is accessible on the accelerator and is readable on the CPU.
`access_type_read_write`	Shared. The allocation is accessible on the accelerator and is writable on the CPU.
`access_type_write`	Shared. The allocation is accessible on the accelerator and is both readable and writable on the CPU.

Specifies the queuing modes that are supported on the accelerator.

enum queuing_mode;

Name	Description
`queuing_mode_immediate`	A queuing mode that specifies that any commands, for example, parallel_for_each Function (C++ AMP), are sent to the corresponding accelerator device as soon as they return to the caller.
`queuing_mode_automatic`	A queuing mode that specifies that commands be queued up on a command queue that corresponds to the accelerator_view object. Commands are sent to the device when accelerator_view::flush is called.