Overhead code

Overhead code

Overhead code is the additional (or excess) object code generated by a compiler to provide machine code which will be executed by a specific CPU. This code includes translations of generic instructions listed in cross-platform code, and is tailored for execution on a specific platform or architecture. An example of overhead code would be code generated to handle reference counting, while source code written in a high level language is an example cross-platform code.

Analogy

The coverage area of a standalone house is more than the space taken by enclosures. Similarly, overhead code is the part of the program which is not listed in the source code. However, it is needed for the software to operate properly.



Wikimedia Foundation. 2010.

См. также в других словарях:

  • Code coverage — is a measure used in software testing. It describes the degree to which the source code of a program has been tested. It is a form of testing that inspects the code directly and is therefore a form of white box testing.[1] Code coverage was among …   Wikipedia

  • Code review — is systematic examination (often as peer review) of computer source code. It is intended to find and fix mistakes overlooked in the initial development phase, improving both the overall quality of software and the developers skills. Reviews are… …   Wikipedia

  • Code division multiple access — This article is about a channel access method. For the mobile phone technology referred to as CDMA, see IS 95 and CDMA2000. Multiplex techniques Circuit mode (constant bandwidth) TDM · FDM  …   Wikipedia

  • Consistent Overhead Byte Stuffing — (COBS) is an algorithm for encoding data bytes that results in efficient, reliable, unambiguous packet framing regardless of packet content, thus making it easy for receiving applications to recover from malformed packets. Byte stuffing is a… …   Wikipedia

  • Threaded code — Not to be confused with multi threaded programming. In computer science, the term threaded code refers to a compiler implementation technique where the generated code has a form that essentially consists entirely of calls to subroutines. The code …   Wikipedia

  • Hamming code — In telecommunication, a Hamming code is a linear error correcting code named after its inventor, Richard Hamming. Hamming codes can detect and correct single bit errors. In other words, the Hamming distance between the transmitted and received… …   Wikipedia

  • Universal code (data compression) — In data compression, a universal code for integers is a prefix code that maps the positive integers onto binary codewords, with the additional property that whatever the true probability distribution on integers, as long as the distribution is… …   Wikipedia

  • EMMA (code coverage tool) — EMMA is an open source toolkit for measuring and reporting Java code coverage. EMMA is distributed under the terms of Common Public License v1.0.EMMA features at a glance: * EMMA can instrument classes for coverage either offline (before they are …   Wikipedia

  • 8b10b-Code — Der 8b10b Code (auch 8b/10b Code) ist ein Leitungscode in der Telekommunikationstechnik. Dabei werden 8 Bit Daten mit 10 Bit kodiert, sodass zum einen ein Gleichspannungsausgleich gewährleistet ist und zum anderen Taktrückgewinnung aus dem… …   Deutsch Wikipedia

  • Fountain code — In Coding Theory and Communication Theory, fountain codes (also known as rateless erasure codes) are a class of erasure codes with the property that a potentially limitless sequence of encoding symbols can be generated from a given set of source… …   Wikipedia


Поделиться ссылкой на выделенное

Прямая ссылка:
Нажмите правой клавишей мыши и выберите «Копировать ссылку»