A process is a group of instructions that are followed.

Processes are created using the fork system call. The parent process recieves the pid of the child, and the child recieves a return value of 0. Each process must have a parent. The file descriptors and variables are exact copies.

Light weight processes are called threads.

A process is a program being executed. A process includes a PC Program Counter which indicates where the next instruction is, access permissions (based on UID and GID), and memory (both data memory and text memory).

A process is not simply a string of instructions as that definition could equally well apply to the image of the binary which is stored on disk).

A process is always in exactly one of a few states: running, waiting for the CPU, waiting for I/O,

Proc"ess, n. [F. proces, L. processus. See Proceed.]

1.

The act of proceeding; continued forward movement; procedure; progress; advance.

"Long process of time."

Milton.

The thoughts of men are widened with the process of the suns. Tennyson.
<-- = advance of time? -->

2.

A series of actions, motions, or occurrences; progressive act or transaction; continuous operation; normal or actual course or procedure; regular proceeding; as, the process of vegetation or decomposition; a chemical process; processes of nature.

Tell her the process of Antonio's end. Shak.

3.

A statement of events; a narrative.

[Obs.]

Chaucer.

4. Anat. & Zool.

Any marked prominence or projecting part, especially of a bone; anapophysis.

5. Law

The whole course of proceedings in a cause real or personal, civil or criminal, from the beginning to the end of the suit; strictly, the means used for bringing the defendant into court to answer to the action; -- a generic term for writs of the class called judicial.

Deacon's process [from H. Deacon, who introduced it] Chem., a method of obtaining chlorine gas by passing hydrochloric acid gas over heated slag which has been previously saturated with a solution of some metallic salt, as sulphate of copper. -- Final process Practice, a writ of execution in an action at law. Burrill. -- In process, in the condition of advance, accomplishment, transaction, or the like; begun, and not completed. -- Jury process Law, the process by which a jury is summoned in a cause, and by which their attendance is enforced. Burrill. -- Leblanc's process Chem., the process of manufacturing soda by treating salt with sulphuric acid, reducing the sodium sulphate so formed to sodium sulphide by roasting with charcoal, and converting the sodium sulphide to sodium carbonate by roasting with lime. -- Mesne process. See under Mesne. -- Process milling, the process of high milling for grinding flour. See under Milling. -- Reversible process Thermodynamics, any process consisting of a cycle of operations such that the different operations of the cycle can be performed in reverse order with a reversal of their effects.

 

© Webster 1913.

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