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1 command control block
A specifically formatted information set used in the IBM Token Ring environment that is transmitted from the application program to the adapter support software to request an operation. -
2 race condition
"A condition in which two or more threads can reach and execute a block of code, and the program outcome changes radically depending on which thread reaches the code first. A race condition is benign if all outcomes are valid. However, race conditions can be associated with synchronization errors that can result in one process interfering with another process and possibly introduce a vulnerability. Frequently, a potential outcome of a race condition leaves the program in an unstable or invalid state." -
3 thread
"A type of object within a process that runs program instructions. Using multiple threads allows concurrent operations within a process and enables one process to run different parts of its program on different processors simultaneously. A thread has its own set of registers, its own kernel stack, a thread environment block, and a user stack in the address space of its process." -
4 toolbar
"A row, column, or block of buttons or icons, usually displayed across the top of the screen, that represent tasks or commands within the program. The toolbar buttons provide shortcuts to common tasks frequently accessed from the menus." -
5 extent
"On a disk or other direct-access storage device, a continuous block of storage space reserved by the operating system for a particular file or program."
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