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process

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abnormal termination

abnormal termination  

A termination to a process brought about by the operating system when the process reaches a point from which it cannot continue, e.g. when the process attempts to obey an undefined instruction. In ...
allocation routine

allocation routine  

A routine that is responsible for the allocation of resources to a process. See resource allocation.
available list

available list  

A list of the unallocated parts of a sharable resource. Some resources, such as processors, are shared by being allocated in their entirety to a process for a period of time. Other resources consist ...
axon

axon  

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(aks-on)a nerve fibre: a single process extending from the cell body of a neurone and carrying nerve impulses away from it.
bipolar cell

bipolar cell  

A class of retinal interneurons that receive input from the photoreceptors and send their output to ganglion cells. The response to light is graded (not an all-or-none response) and bipolar cells can ...
blocked process

blocked process  

A process for which a process description exists but which is unable to proceed because it lacks some necessary resource. For example, a process may become blocked if it has inadequate memory ...
cell body

cell body  

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(perikaryon) the enlarged portion of a neuron (nerve cell), containing the nucleus. It is concerned more with the nutrition of the cell than with propagation of nerve impulses.
context switch

context switch  

A general term covering the situation in which a process initiates a new type of activity. Any process functions in some form of environment, which defines the currently valid variables that the ...
CPU time

CPU time  

The time for which a process has been receiving service from the processor. See also system accounting.
critical region

critical region  

A section of code that may only be executed by one process at any one time. See also critical resource, critical section, mutual exclusion.
critical section

critical section  

Part of a process that must be executed indivisibly. Originally it was thought that the indivisibility had to be absolute. Now it is considered that it is only necessary for the critical section to ...
deadlock

deadlock  

1 Another name for deadly embrace.2 A specific form of deadly embrace that arises in a Petri net, in which some states of the net become forever inaccessible.
demand paging

demand paging  

A method of dealing with a situation in which a process requires access to a page of memory that has been written to backing store. Some systems attempt to forecast the pattern of demand for pages; ...
distributed processing

distributed processing  

The organization of processing to be carried out on a distributed system. Each process is free to process local data and make local decisions. The processes exchange information with each other over ...
dump check

dump check  

A copy of the contents of all the workspace associated with a job or process. If the job or process subsequently fails, it can be restarted at the point at which the dump check was taken. Note that ...
entry time

entry time  

The time at which a process is started or restarted by the process scheduler.
feedback queue

feedback queue  

A form of scheduling mechanism often used in multiaccess systems. Individual processes are allocated a quantum of time on the processor. A process once started is allowed to run until it has ...
file locking

file locking  

A method of ensuring that if one process is altering the contents of a file, other processes cannot access the file until the updating activity has been successfully completed. The actual operation ...
FTAM

FTAM  

Acronym for File Transfer, Access, and Management. An ISO protocol that deals with the handling of files in a networked environment. As well as allowing the transfer of files between different ...
Gilles Deleuze

Gilles Deleuze  

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(1925–95)Sorbonne-educated and based in Paris for most of his career, Deleuze started as a historian of philosophy, writing about Hume, Spinoza, and Nietzsche. Later work, particularly in ...

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