critical sections - определение. Что такое critical sections
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Что (кто) такое critical sections - определение

PROTECTED SECTION OF CODE THAT CANNOT BE EXECUTED BY MORE THAN ONE PROCESS AT A TIME
Critical sections; Details about critical section
  • Flow graph depicting need for critical section
  • Pseudocode for implementing critical section
  • Locks and critical sections in multiple threads
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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.
critical section         
A non-re-entrant piece of code that can only be executed by one process at a time. It will usually terminate in bounded time and a process will only have to wait a bounded time to enter it. Some synchronisation mechanism is required at the entry and exit of the critical section to ensure exclusive use.
Critical theory         
PHILOSOPHY THAT SOCIOLOGICAL UNDERSTANDING'S PRIMARILY USE SHOULD BE SOCIAL REFORM
Critical social theory; Critical theorists; Critical sociology; Crtical theory; Critical theorist; Critical Theory; Critical Sociology; Critical-theory; Frankfurt Critical Theory; Social critical theory; Literary critical theory; Critical Theorist; Contemporary theory; Critical theories; Critical studies
A critical theory is any approach to social philosophy that focuses on reflective assessment and critique of society and culture to reveal and challenge power structures. With roots in sociology and literary criticism, it argues that social problems stem more from social structures and cultural assumptions than from individuals.
critical theory         
PHILOSOPHY THAT SOCIOLOGICAL UNDERSTANDING'S PRIMARILY USE SHOULD BE SOCIAL REFORM
Critical social theory; Critical theorists; Critical sociology; Crtical theory; Critical theorist; Critical Theory; Critical Sociology; Critical-theory; Frankfurt Critical Theory; Social critical theory; Literary critical theory; Critical Theorist; Contemporary theory; Critical theories; Critical studies
¦ noun a philosophical approach to culture, and especially to literature, seen from a modified Marxist perspective.
critical state         
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  • Critical [[carbon dioxide]] exuding [[fog]] while cooling from supercritical to critical temperature.
  • UCST]]
  • negative compressibility]].
TEMPERATURE AND PRESSURE POINT WHERE PHASE BOUNDARIES DISAPPEAR
Critical temperature; Critical properties; Critical pressure; Critical point (physics); Critical state; Critical temperature and pressure; Critical point (chemistry); Supercritical pressure; Critical solution temperature.; Critical property; Critical density (thermodynamics); Critical point (physics
¦ noun Chemistry the state of a substance when it is at the critical point.
critical temperature         
  • oclc=76176158}}</ref>
}}
  • Critical [[carbon dioxide]] exuding [[fog]] while cooling from supercritical to critical temperature.
  • UCST]]
  • negative compressibility]].
TEMPERATURE AND PRESSURE POINT WHERE PHASE BOUNDARIES DISAPPEAR
Critical temperature; Critical properties; Critical pressure; Critical point (physics); Critical state; Critical temperature and pressure; Critical point (chemistry); Supercritical pressure; Critical solution temperature.; Critical property; Critical density (thermodynamics); Critical point (physics
¦ noun Chemistry the temperature of a gas in its critical state, above which it cannot be liquefied by pressure alone.
critical pressure         
  • oclc=76176158}}</ref>
}}
  • Critical [[carbon dioxide]] exuding [[fog]] while cooling from supercritical to critical temperature.
  • UCST]]
  • negative compressibility]].
TEMPERATURE AND PRESSURE POINT WHERE PHASE BOUNDARIES DISAPPEAR
Critical temperature; Critical properties; Critical pressure; Critical point (physics); Critical state; Critical temperature and pressure; Critical point (chemistry); Supercritical pressure; Critical solution temperature.; Critical property; Critical density (thermodynamics); Critical point (physics
¦ noun Chemistry the pressure of a gas or vapour in its critical state.
Critical period         
  • Konrad Lorenz
  • right
MATURATIONAL STAGE IN THE LIFESPAN OF AN ORGANISM DURING WHICH THE NERVOUS SYSTEM IS ESPECIALLY SENSITIVE TO CERTAIN ENVIRONMENTAL STIMULI
Sensitive periods; Sensitive Periods; Critical Period; Sensitive period; Critical periods; Montessori sensitive period theory; Critical age; Critical period (psychology)
In developmental psychology and developmental biology, a critical period is a maturational stage in the lifespan of an organism during which the nervous system is especially sensitive to certain environmental stimuli. If, for some reason, the organism does not receive the appropriate stimulus during this "critical period" to learn a given skill or trait, it may be difficult, ultimately less successful, or even impossible, to develop certain associated functions later in life.
Critical variable         
THERMODYNAMIC VARIABLES ASSOCIATED WITH CRITICAL POINTS
Critical variables
Critical variables are defined, for example in thermodynamics, in terms of the values of variables at the critical point.
Critical field         
LIMITING MAGNETIC FIELD STRENGTH FOR SUPERCONDUCTIVITY
Lower critical field; Upper critical field; Critical current
For a given temperature, the critical field refers to the maximum magnetic field strength below which a material remains superconducting. Superconductivity is characterized both by perfect conductivity (zero resistance) and by the complete expulsion of magnetic fields (the Meissner effect).

Википедия

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.