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Protected section of code that cannot be executed by more than one process at a time
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
Critical_section
Concurrent programming algorithm for mutual exclusion
to enter the critical section. Entrance to the critical section is granted for process P0 if P1 does not want to enter its critical section or if P1 has
Peterson's_algorithm
Logic for safely sharing computer resources
exclusion algorithms designed to prevent concurrent threads entering critical sections of code concurrently to eliminate the risk of data corruption. Lamport
Lamport's_bakery_algorithm
Mutual exclusion algorithm
critical section at the same time, the algorithm will allow only one process in, based on whose turn it is. If one process is already in the critical
Dekker's_algorithm
In computing, restricting data to be accessible by one thread at a time
execution never enters a critical section while a concurrent thread of execution is already accessing said critical section, which refers to an interval
Mutual_exclusion
Concept in computer science, referring to processes, or data
execute some particular program segment known as critical section. Processes' access to critical section is controlled by using synchronization techniques
Synchronization (computer science)
Synchronization_(computer_science)
its critical section. This is a modification to Ricart–Agrawala algorithm in which a REQUEST and REPLY message are used for attaining the critical section
Suzuki–Kasami_algorithm
Computer operating system for applications with critical timing constraints
to minimize the worst-case length of time spent in the scheduler's critical section, during which preemption is inhibited, and, in some cases, all interrupts
Real-time_operating_system
Approach to social philosophy
Critical theory is a social, historical, and political school of thought and philosophical perspective which centers on analyzing and challenging systemic
Critical_theory
Variable used in a concurrent system
multitasking operating system. It allows simultaneous access to a critical section by some predetermined number of processes. A useful way to think of
Semaphore_(programming)
Computer programming method
priority assignment and executes its critical section at an elevated priority level. After executing its critical section and releasing its locks, the process
Priority_inheritance
Synchronization mechanism
read-side critical sections, which are normally delimited by rcu_read_lock and rcu_read_unlock. Any statement that is not within an RCU read-side critical section
Read-copy-update
Smallest amount of fissile material needed to sustain a nuclear reaction
it subcritical. A mass may be exactly critical at a particular temperature. Fission and absorption cross-sections increase as the relative neutron velocity
Critical_mass
Object or module in concurrent programming
constitutes a critical section that must be synchronized by mutual exclusion. If code and processor instructions in critical sections of code that access
Monitor_(synchronization)
Thread synchronization mechanism
"tickets" to control which thread of execution is allowed to enter a critical section. The basic concept of a ticket lock is similar to the ticket queue
Ticket_lock
Conceptual framework
Critical race theory (CRT) is a conceptual framework developed to understand the relationships between social conceptions of race and ethnicity in the
Critical_race_theory
Operating system performance issue
degradation due to the idle wait times spent by the CPUs in kernel-level critical sections. Software lockout is a major cause of scalability degradation in a
Software_lockout
Problem used to illustrate synchronization issues and techniques for resolving them
up both forks or wait, never holding exactly one fork outside of a critical section. To accomplish this, Dijkstra's solution uses one mutex, one semaphore
Dining_philosophers_problem
Computer science problem in concurrency
and solved by Courtois et al. Suppose we have a shared memory area (critical section) with the basic constraints detailed above. It is possible to protect
Readers–writers_problem
Small computer on a single integrated circuit
continuation/restart logic. The length of any critical section that needs to be interrupted. Entry to a critical section restricts concurrent data structure access
Microcontroller
protect critical sections of code. During the execution of such a critical section, all interrupt handlers that cannot execute safely within a critical section
Interrupt_latency
Undesireable computing scheduling scenario
choosing the highest priority of any interrupt that ever entered the critical section, the priority inversion problem could be solved without locking out
Priority_inversion
American Dungeons & Dragons web series
Critical Role is an American web series in which a group of professional voice actors play Dungeons & Dragons. The show started streaming partway through
Critical_Role
Method of scheduling activities
The critical path method (CPM), or critical path analysis (CPA), is an algorithm for scheduling a set of project activities. A critical path is determined
Critical_path_method
Every process maintains a queue of pending requests for entering critical section in order. The queues are ordered by virtual time stamps derived from
Lamport's distributed mutual exclusion algorithm
Lamport's_distributed_mutual_exclusion_algorithm
CPU instruction to set a memory location to a flag value and return its prior value
(test_and_set(&lock) == 1); critical section // only one process can be in this section at a time // Release the lock when finished with the critical section. // It was
Test-and-set
randomly boosted in priority and allowed to run long enough to exit the critical section. If the thread doesn't get enough time to release the lock, it will
Windows NT processor scheduling
Windows_NT_processor_scheduling
Consistency model in concurrent computing
loads occurring in the critical section, and as such all the older loads have to complete before loads in the critical section can run. Processor consistency
Processor_consistency
request of entering the critical section: The requesting site is the site which is requesting to enter the critical section. The receiving site is every
Maekawa's_algorithm
Dynamic scheduling algorithm
with EDF scheduling. A process may use a shared resource inside a critical section, to prevent it from being pre-emptively descheduled in favour of another
Earliest deadline first scheduling
Earliest_deadline_first_scheduling
Algorithm for mutual exclusion on a distributed system
process has finished using the critical section itself. Critical Section: Requesting site enters its critical section only after receiving all reply messages
Ricart–Agrawala_algorithm
Solution to the critical section problem
The Eisenberg & McGuire algorithm is an algorithm for solving the critical sections problem, a general version of the dining philosophers problem. It
Eisenberg_&_McGuire_algorithm
the token) wishes to receive the token in order to enter into its critical section, it sends a request to its parent, node j. If node j FIFO is empty
Raymond's_algorithm
enter the critical section one by one (or in larger groups if the critical section permits this). The last process to leave the critical section closes the
Szymański's_algorithm
Point where the derivative of a function is zero or undefined (in certain cases)
the function at a critical point is a critical value. More specifically, when dealing with functions of a real variable, a critical point is a point in
Critical_point_(mathematics)
Type of consistency in programming which is based synchronization
In release consistency model, the action of entering and leaving a critical section are classified as acquire and release and for either case, explicit
Release_consistency
Property of some operation(s) in concurrent programming
operations in a critical section. Strictly, independent operations can then be carefully permitted to overlap their critical sections, provided this does
Linearizability
South Korean filmmaker (born 1974)
in the Un Certain Regard section at the 2011 Cannes Film Festival. The Wailing (2016) further contributed to Na's critical and commercial standing, earning
Na_Hong-jin
Algorithm in a thread whose failure cannot cause another thread to fail
as mutexes, semaphores, and critical sections are all mechanisms by which a programmer can ensure that certain sections of code do not execute concurrently
Non-blocking_algorithm
US federal law on website liability
In the United States, Section 230 is a section of the Communications Act of 1934 that was enacted as part of the Communications Decency Act of 1996, which
Section_230
Unchanging property for all objects of a class
concurrency, maintaining the invariant in methods typically requires a critical section to be established by locking the state using a mutex. An object invariant
Class_invariant
When a system's behavior depends on timing of uncontrollable events
depend on some shared state. Operations upon shared states are done in critical sections that must be mutually exclusive. Failure to obey this rule can corrupt
Race_condition
2019 Indian film directed by Ajay Bahl
Section 375: Marzi Ya Zabardasti? (transl. Section 375: Will or Force?), better known simply as Section 375, is a 2019 Indian Hindi-language courtroom
Section_375
Vertical continuation of the keel at the front of a boat
physical structure of a wooden boat or ship that gives it strength at the critical section of the structure, bringing together the port and starboard side planks
Stem_(ship)
Computer memory architecture
exits a critical section, new values of the variables are propagated to all sites. Entry consistency is when a process enters a critical section, it will
Distributed_shared_memory
Mobile FPS
with in-game credits. Critical Ops offers a variety of weapons in which players can select from, there is the Primary Weapons section which include weapons
Critical_Ops
CPU instruction to simultaneously read and write a value in memory
Traditional implementations using critical sections face the risk of crashing if some process dies inside the critical section or sleeps for an intolerably
Read–modify–write
Evaluation
service, or company or a critical take on current affairs in literature, politics, science or culture. In addition to a critical evaluation, the review's
Review
Critical Line was a contemporary art exhibition center that opened 5 May 2006 in the St. Helens section of Tacoma, Washington. The 1,800-foot redesigned
Critical_Line
Computer science concept
require user input, or require access to a critical section which must be executed atomically. Such critical sections are protected using a synchronization
Process_state
processes in the network)) messages on average. When a process invokes a critical section, it sends a request to a queue at a particular processor which is specified
Naimi–Trehel_algorithm
Inherent flaw in computer instructions
processing. Time-of-check to time-of-use (TOCTOU) is a form of unprotected critical section. Null pointer dereference. Using an uninitialized variable. Using an
Software_bug
2025 American science fiction television film
Star Trek: Section 31 is a 2025 American science fiction television film directed by Olatunde Osunsanmi and written by Craig Sweeny for the streaming
Star_Trek:_Section_31
Concepts in theoretical computer science
program counters for both processes designate statements within a critical section; An execution of two concurrent processes where each process is waiting
Safety and liveness properties
Safety_and_liveness_properties
Political party in France
The French Section of the Workers' International (French: Section française de l'Internationale ouvrière, SFIO) was a major social democratic political
French Section of the Workers' International
French_Section_of_the_Workers'_International
unbounded priority inversion and mutual deadlock due to wrong nesting of critical sections. In this protocol each resource is assigned a priority ceiling, which
Priority_ceiling_protocol
Professional surfer
"position" surfer, meaning he invariably placed himself in the most critical section of the wave using the simplest and cleanest line. He often rode with
Michael_Ho_(surfer)
Formula to quantify column buckling under a given load
section. For slender columns, the critical buckling stress is usually lower than the yield stress. In contrast, a stocky column can have a critical buckling
Euler's_critical_load
Unit of work performed within a database management system
the Warp Transactional Filesystem (WTF). ACID Concurrency control Critical section Post void Database transaction schedule "ACID vs BASE Databases - Difference
Database_transaction
Engine whose failure would most adversely affect aircraft performance or handling
retain control of the aircraft after failure of the critical engine, and publish this speed in the section of the airplane flight manual on limitations. The
Critical_engine
Habitat area essential to the conservation of a listed species
Critical habitat refers to specific geographic areas essential to the conservation of a listed endangered species, though the area need not actually be
Critical_habitat
Free and open-source operating system
or modifying a shared resource simultaneously, DragonFly employs critical sections, and serializing tokens to prevent concurrent access. While both Linux
DragonFly_BSD
Type of Spinlock
processors contending to enter the critical section with the assumption that a thread enters the critical section only once. The following performance
Array_Based_Queuing_Locks
Compressible flow velocity limiting effect
with the sonic velocity c s ∗ {\displaystyle c_{s}^{*}} at the critical cross-section: c s ∗ = γ p ρ ∗ = 2 μ C P T = v m a x {\displaystyle c_{s}^{*}={\sqrt
Choked_flow
Philosophical approach to understanding science
Critical realism is a philosophical approach to understanding science, and in particular social science, initially developed by Roy Bhaskar (1944–2014)
Critical realism (philosophy of the social sciences)
Critical_realism_(philosophy_of_the_social_sciences)
specifically Section 7002(a), which empowers the Secretary of Energy, in collaboration with the Secretary of the Interior, to identify critical materials
United States critical materials list
United_States_critical_materials_list
Resource shortage in computers
exclusion algorithm that must choose to allow one of two processes into a critical section and picks one arbitrarily is deadlock-free, but not starvation-free
Resource_starvation
System whose failure would be serious
A safety-critical system or life-critical system is a system whose failure or malfunction may result in one (or more) of the following outcomes: death
Safety-critical_system
Scheduling technique in computer science
cannot preempt a lower priority critical section if its priority is lower than the ceiling priority for that section. This method prevents deadlocks and
Rate-monotonic_scheduling
2020 film directed by Reed Morano
4.8/10. The website's critical consensus reads: "Blake Lively delivers an impressive lead performance, but The Rhythm Section plods predictably through
The_Rhythm_Section
Uncontrolled nuclear fission chain reaction
A criticality accident is an accidental uncontrolled nuclear fission chain reaction. It is sometimes referred to as a critical excursion, critical power
Criticality_accident
Road tunnel in Bulgaria
almost 400 million leva (200 million euro). The Zheleznitsa Tunnel is a critical section of the Struma motorway, linking the Bulgarian capital Sofia with the
Zheleznitsa_Tunnel
Concept in aerodynamics
air flowing over the wing reaches the speed of sound. It is known as the critical Mach number (Mcr). Further increase in aircraft speed to the cruise value
Critical_Mach_number
(sequentially) - these are synchronization operations. Accesses to critical sections are seen sequentially. All other accesses may be seen in different
Weak_consistency
2011 studio album by Kendrick Lamar
Section.80 is the debut studio album by the American rapper Kendrick Lamar. It was released on July 2, 2011, by Top Dawg Entertainment (TDE). In the years
Section.80
Mumbai Metro's Aqua Line metro station
metro systems Mumbai Suburban Railway "Ayesa Engineering delivers critical sections of Mumbai Metro Line 3, the city's first fully underground metro corridor"
Chhatrapati Shivaji Maharaj Terminus metro station
Chhatrapati_Shivaji_Maharaj_Terminus_metro_station
US FBI special crisis unit
Support Unit Investigative and Operations Support Section – Prepares for and responds to critical incidents, major investigations, and special events
FBI Critical Incident Response Group
FBI_Critical_Incident_Response_Group
tends to separate privileges by revoking them completely after the critical section is done, and change the user it runs under to some unprivileged account
Privilege_separation
Factor critical to the operation of an organization
types of critical systems: mission critical, business critical, safety critical and security critical. The key difference between a safety critical system
Mission_critical
Windows 9x computer virus
a destructive but otherwise unremarkable process that overwrote a critical section of the computer's hard drive with garbage data, corrupting the data
CIH_(computer_virus)
Period of time radio stations lower frequencies
power as a result of Section 73.187 of the Federal Communications Commission's rules. Canadian restricted hours are similar to critical hours, except that
Critical_hours
Type of caesarean section
types of caesarean sections. This type of incision was developed by the German gynecologist Hermann Johannes Pfannenstiel, who was critical in the development
Lower segment Caesarean section
Lower_segment_Caesarean_section
Systematic preventive approach to food safety
The Hazard Analysis and Critical Control Point System (HACCP; /ˈhæsʌp/) is a systematic preventive approach to food safety from biological, chemical, and
Hazard Analysis Critical Control Point
Hazard_Analysis_Critical_Control_Point
1920s Soviet art journal
dedicated its critical section to the Soviet leader (though the publication's artistic prose and poetry were not Lenin-themed). These critical articles mainly
LEF_(journal)
Computing state associated with a point in time
consumer to execute simultaneously in the monitor making it an event+critical section. Callback (computer programming) Database trigger DOM events Event-driven
Event_(computing)
Group cycling advocating cycling friendly policy
Critical Mass is a form of direct action in which people travel as a group on bicycles at a set location and time. The idea is for people to group together
Critical_Mass_(cycling)
Ideology or movement
feminism, or gender-critical feminism, by country surveys the development and activities of trans-exclusionary or gender-critical feminist movements across
Trans-exclusionary radical feminism by country
Trans-exclusionary_radical_feminism_by_country
Practice of choosing products based on ethical & political considerations
Critical consumption is the conscious choice to buy or not buy a product because of ethical and political beliefs. The critical consumer considers characteristics
Critical_consumerism
Chemical data page
Boca Raton, Florida, 2003; Section 6, Fluid Properties; Critical Constants. Also agrees with Celsius values from Section 4: Properties of the Elements
Critical points of the elements (data page)
Critical_points_of_the_elements_(data_page)
American academic (born 1957)
Sedgwick's argument for a reparative critical approach. Divided into two sections, the book is part memoir and part critical essay; the goal is to produce "a
Ann_Cvetkovich
Philippine teen romantic comedy television series
Ang Mutya ng Section E (transl. The Jewel of Section E) is a Philippine teen romantic comedy television series. It is based on the Wattpad books by Lara
Ang_Mutya_ng_Section_E
2013 poetry collection
3 Sections is a 2013 poetry collection written by Vijay Seshadri and published by Graywolf Press. It won the Pulitzer Prize for Poetry in 2014. 3 sections
3_Sections
Notwithstanding clause - Canadian Constitution
Section 33 of the Canadian Charter of Rights and Freedoms, commonly known as the notwithstanding clause (French: clause dérogatoire or clause nonobstant)
Section 33 of the Canadian Charter of Rights and Freedoms
Section_33_of_the_Canadian_Charter_of_Rights_and_Freedoms
United States law
ESA (Section 4). If determinable, critical habitat must be designated for listed species (Section 4). Absent certain limited situations (Section 10),
Endangered Species Act of 1973
Endangered_Species_Act_of_1973
American television writer and producer
for a second season, which ended up being its last. Murphy was openly critical of several prominent bands for not releasing music for use in Glee, for
Ryan_Murphy_(producer)
Academic journal
Journal issues regularly include a book review section. As the house journal of the BCLA, Comparative Critical Studies also publishes a list of the winners
Comparative_Critical_Studies
Indian government organization
National Critical Information Infrastructure Protection Centre (NCIIPC) is an organisation of the Government of India created under Section 70A of the
National Critical Information Infrastructure Protection Centre
National_Critical_Information_Infrastructure_Protection_Centre
2022 American film
Section Eight (also known as Section 8) is a 2022 American action film directed by Christian Sesma and starring Ryan Kwanten, Dolph Lundgren, Dermot Mulroney
Section_Eight_(film)
Critical Role (sometimes abbreviated as CR) is an American actual play web series in which a group of professional voice actors play Dungeons & Dragons
List of Critical Role cast members
List_of_Critical_Role_cast_members
Error screen displayed after a fatal system error on a computer
instances by adding an additional section in the SYSTEM.INI file of affected clients with the text TimerCriticalSection = 10000. The files vtdapi.386re
Black_screen_of_death
travel, tourism, insurance
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