Memory management

Memory management is the act of managing computer memory at the system level. The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and free it for reuse when no longer needed. This is critical to any advanced computer system where more than a single process might be underway at any time.

Several methods have been devised that increase the effectiveness of memory management. Virtual memory systems separate the memory addresses used by a process from actual physical addresses, allowing separation of processes and increasing the effectively available amount of RAM using paging or swapping to secondary storage. The quality of the virtual memory manager can have an extensive effect on overall system performance.

Dynamic memory allocation

Details

The task of fulfilling an allocation request consists of locating a block of unused memory of sufficient size. Memory requests are satisfied by allocating portions from a large pool of memory called the heap or free store. At any given time, some parts of the heap are in use, while some are "free" (unused) and thus available for future allocations.

Programming

Programming may refer to:

See also

Programming (music)

Programming is a form of music production and performance using electronic devices, such as sequencers, to generate sounds of musical instruments. Programming is used in nearly all forms of electronic music and in most hip hop music since the 1990s. It is also frequently used in modern pop and rap rock music from various regions of the world, and sometimes in jazz and contemporary classical music. In the 21st century, programming has been incorporated into various styles of screamo and metalcore music known as crunkcore and electronicore respectively.

See also

Notes

External links

Computer programming

Computer programming (often shortened to programming) is a process that leads from an original formulation of a computing problem to executable computer programs. Programming involves activities such as analysis, developing understanding, generating algorithms, verification of requirements of algorithms including their correctness and resources consumption, and implementation (commonly referred to as coding) of algorithms in a target programming language. Source code is written in one or more programming languages. The purpose of programming is to find a sequence of instructions that will automate performing a specific task or solving a given problem. The process of programming thus often requires expertise in many different subjects, including knowledge of the application domain, specialized algorithms and formal logic.

Related tasks include testing, debugging, and maintaining the source code, implementation of the build system, and management of derived artifacts such as machine code of computer programs. These might be considered part of the programming process, but often the term software development is used for this larger process with the term programming, implementation, or coding reserved for the actual writing of source code. Software engineering combines engineering techniques with software development practices.

Heap

Heap may refer to:

Computer science

Mathematics

Industry

Comics

Names

Place

Acronyms

See also

Heap (surname)

Heap is a surname. Notable people with the surname include

See also

Heap (comics)

The Heap is the name of several fictional comic book muck-monsters, the original of which first appeared in Hillman Periodicals' Air Fighters Comics #3 (Dec. 1942), during the period fans and historians call the Golden Age of Comic Books. The character was created by writer Harry Stein and artist Mort Leav, and revived in the 1980s by Eclipse Comics.

Similar but unrelated characters appeared in comics stories published by Skywald in the 1970s and Image Comics in the 1990s.

Publication history

Hillman

Following its debut Air Fighters Comics #3 (cover-dated Dec. 1942), the Heap reappeared as a guest character sporadically in that title. With its fourth appearance, in the by-then re-titled Airboy Comics vol. 3, #9 (Oct. 1946), it became the star of a backup feature. That feature continued until the final issue, vol. 10, #4 (May 1953). Other artists associated with Hillman's Heap include Jack Abel, Paul Reinman, and Ernie Schroeder.

In 1986, Eclipse Comics, having acquired rights to some Hillman characters, began publishing a new Airboy comic with the Heap as a supporting character. The Heap also appeared in the Eclipse title The New Wave, where the creature was considered by some members of that group to be a member. Eclipse Comics went bankrupt and ceased operations in the 1990s. Image Comics purchased the Eclipse assets, including the Heap.