POSIX.1c: Threads extensions (IEEE Std 1003.1c-1995).POSIX.1b: Real-time extensions (IEEE Std 1003.1b-1993, later appearing as librt-the Realtime Extensions library).POSIX.1: Core Services (incorporates Standard ANSI C) (IEEE Std 1003.1-1988).Versions Parts before 1997 īefore 1997, POSIX comprised several standards: The development of the POSIX standard takes place in the Austin Group (a joint working group among the IEEE, The Open Group, and the ISO/IEC JTC 1/SC 22/WG 15). POSIX Conformance Testing: A test suite for POSIX accompanies the standard: VSX-PCTS or the VSX POSIX Conformance Test Suite.This is POSIX 1003.1-2008 with Technical Corrigendum 1.) POSIX.1, 2013 Edition: POSIX Base Definitions, System Interfaces, and Commands and Utilities (which include POSIX.1, extensions for POSIX.1, Real-time Services, Threads Interface, Real-time Extensions, Security Interface, Network File Access and Network Process-to-Process Communications, User Portability Extensions, Corrections and Extensions, Protection and Control Utilities and Batch System Utilities.In 2008, most parts of POSIX were combined into a single standard (IEEE Std 1003.1-2008, also known as POSIX.1-2008).Īs of 2014, POSIX documentation is divided into two parts: POSIX also defines a standard threading library API which is supported by most modern operating systems. Many user-level programs, services, and utilities (including awk, echo, ed) were also standardized, along with required program-level services (including basic I/O: file, terminal, and network). The standardized user command line and scripting interface were based on the UNIX System V shell. The POSIX specifications for Unix-like operating systems originally consisted of a single document for the core programming interface, but eventually grew to 19 separate documents (POSIX.1, POSIX.2, etc.).
However, several major versions of Unix existed-so there was a need to develop a common-denominator system. Unix was selected as the basis for a standard system interface partly because it was "manufacturer-neutral". The committee found it more easily pronounceable and memorable, and thus adopted it. Richard Stallman suggested the name POSIX (pronounced as pahz-icks, as in positive, not as poh-six) to the IEEE instead of former IEEE-IX. The standards emerged from a project that began in 1984 building on work from the related USENIX activity. The family of POSIX standards is formally designated as IEEE 1003 and the ISO/IEC standard number is ISO/ IEC 9945. Originally, the name "POSIX" referred to IEEE Std 1003.1-1988, released in 1988.
#Android ndk socket update
"The absolute width of the display in pixels."Įxample: Log.d("ApplicationTagName", "Display width in px is " + metrics.widthPixels) ĪPI level 30 update final WindowMetrics metrics = windowManager.getCurrentWindowMetrics() įinal WindowInsets windowInsets = metrics.getWindowInsets() We can use widthPixels to get information for:
To access the DisplayMetrics members, initialize an object like this: DisplayMetrics metrics = new DisplayMetrics() Int height = display.getHeight() // deprecatedįor the use case, you're describing, however, a margin/padding in the layout seems more appropriate.Ī structure describing general information about a display, such as its size, density, and font scaling. Int width = display.getWidth() // deprecated If you are in a fragment and want to acomplish this just use Activity.WindowManager (in Xamarin.Android) or getActivity().getWindowManager() (in java).īefore getSize was introduced (in API level 13), you could use the getWidth and getHeight methods that are now deprecated: Display display = getWindowManager().getDefaultDisplay() If you're not in an Activity you can get the default Display via WINDOW_SERVICE: WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE) ĭisplay display = wm.getDefaultDisplay() If you want the display dimensions in pixels you can use getSize: Display display = getWindowManager().getDefaultDisplay()
0 kommentar(er)
