Browse Definitions :
Definition

heap

In certain programming languages including C and pascal , a heap is an area of pre-reserved computer main storage ( memory ) that a program process can use to store data in some variable amount that won't be known until the program is running. For example, a program may accept different amounts of input from one or more users for processing and then do the processing on all the input data at once. Having a certain amount of heap storage already obtained from the operating system makes it easier for the process to manage storage and is generally faster than asking the operating system for storage every time it's needed. The process manages its allocated heap by requesting a "chunk" of the heap (called a heap block ) when needed, returning the blocks when no longer needed, and doing occasional "garbage collecting," which makes blocks available that are no longer being used and also reorganizes the available space in the heap so that it isn't being wasted in small unused pieces.

The term is apparently inspired by another term, stack . A stack is similar to a heap except that the blocks are taken out of storage in a certain order and returned in the same way. In Pascal, a subheap is a portion of a heap that is treated like a stack.

This was last updated in April 2005
Networking
  • SD-WAN security

    SD-WAN security refers to the practices, protocols and technologies protecting data and resources transmitted across ...

  • net neutrality

    Net neutrality is the concept of an open, equal internet for everyone, regardless of content consumed or the device, application ...

  • network scanning

    Network scanning is a procedure for identifying active devices on a network by employing a feature or features in the network ...

Security
  • virtual firewall

    A virtual firewall is a firewall device or service that provides network traffic filtering and monitoring for virtual machines (...

  • cloud penetration testing

    Cloud penetration testing is a tactic an organization uses to assess its cloud security effectiveness by attempting to evade its ...

  • cloud workload protection platform (CWPP)

    A cloud workload protection platform (CWPP) is a security tool designed to protect workloads that run on premises, in the cloud ...

CIO
  • Regulation SCI (Regulation Systems Compliance and Integrity)

    Regulation SCI (Regulation Systems Compliance and Integrity) is a set of rules adopted by the U.S. Securities and Exchange ...

  • strategic management

    Strategic management is the ongoing planning, monitoring, analysis and assessment of all necessities an organization needs to ...

  • IT budget

    IT budget is the amount of money spent on an organization's information technology systems and services. It includes compensation...

HRSoftware
  • ADP Mobile Solutions

    ADP Mobile Solutions is a self-service mobile app that enables employees to access work records such as pay, schedules, timecards...

  • director of employee engagement

    Director of employee engagement is one of the job titles for a human resources (HR) manager who is responsible for an ...

  • digital HR

    Digital HR is the digital transformation of HR services and processes through the use of social, mobile, analytics and cloud (...

Customer Experience
  • chatbot

    A chatbot is a software or computer program that simulates human conversation or "chatter" through text or voice interactions.

  • martech (marketing technology)

    Martech (marketing technology) refers to the integration of software tools, platforms, and applications designed to streamline ...

  • transactional marketing

    Transactional marketing is a business strategy that focuses on single, point-of-sale transactions.

Close