Definitions for critical section
crit·i·cal sec·tion

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1. critical sectionnoun

   A piece of code that accesses a shared resource that must not be concurrently accessed by more than one thread of execution.

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1. Critical section

   In concurrent programming, concurrent accesses to shared resources can lead to unexpected or erroneous behavior, so parts of the program where the shared resource is accessed need to be protected in ways that avoid the concurrent access. One way to do so is known as a critical section or critical region. This protected section cannot be entered by more than one process or thread at a time; others are suspended until the first leaves the critical section. Typically, the critical section accesses a shared resource, such as a data structure, a peripheral device, or a network connection, that would not operate correctly in the context of multiple concurrent accesses.

WikidataRate this definition:5.0 / 1 vote

1. Critical section

   In concurrent programming, a critical section is a piece of code that accesses a shared resource that must not be concurrently accessed by more than one thread of execution. A critical section will usually terminate in fixed time, and a thread, task, or process will have to wait for a fixed time to enter it. Some synchronization mechanism is required at the entry and exit of the critical section to ensure exclusive use, for example a semaphore. By carefully controlling which variables are modified inside and outside the critical section, concurrent access to that state is prevented. A critical section is typically used when a multithreaded program must update multiple related variables without a separate thread making conflicting changes to that data. In a related situation, a critical section may be used to ensure a shared resource, for example a printer, can only be accessed by one process at a time. How critical sections are implemented varies among operating systems. The simplest method is to prevent any change of processor control inside the critical section. On uni-processor systems, this can be done by disabling interrupts on entry into the critical section, avoiding system calls that can cause a context switch while inside the section, and restoring interrupts to their previous state on exit. Any thread of execution entering any critical section anywhere in the system will, with this implementation, prevent any other thread, including an interrupt, from being granted processing time on the CPU - and therefore from entering any other critical section or, indeed, any code whatsoever - until the original thread leaves its critical section.

How to pronounce critical section?

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How to say critical section in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of critical section in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of critical section in Pythagorean Numerology is: 7

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Critical_Section
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Critical_Section
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=critical section