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  2. Busy waiting - Wikipedia

    en.wikipedia.org/wiki/Busy_waiting

    The following C code examples illustrate two threads that share a global integer i. The first thread uses busy-waiting to check for a change in the value of i : #include <pthread.h> #include <stdatomic.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> /* i is global, so it is visible to all functions.

  3. Sleep (system call) - Wikipedia

    en.wikipedia.org/wiki/Sleep_(system_call)

    On Windows, the Sleep() function takes a single parameter of the number of milliseconds to sleep. The Sleep() function is included in kernel32.dll. [1]The Sleep() function has a resolution no higher than the current timer resolution, typically 16ms but at minimum 1ms, adjustable via the timeBeginPeriod() family of "media timer" APIs.

  4. sleep (command) - Wikipedia

    en.wikipedia.org/wiki/Sleep_(command)

    The sleep instruction suspends the calling process for at least the specified number of seconds (the default), minutes, hours or days. sleep for Unix-like systems is part of the X/Open Portability Guide since issue 2 of 1987. It was inherited into the first version of POSIX and the Single Unix Specification. [1] It first appeared in Version 4 ...

  5. C date and time functions - Wikipedia

    en.wikipedia.org/wiki/C_date_and_time_functions

    computes the difference in seconds between two time_t values time: returns the current time of the system as a time_t value, number of seconds, (which is usually time since an epoch, typically the Unix epoch). The value of the epoch is operating system dependent; 1900 and 1970 are often used. See RFC 868. clock

  6. Async/await - Wikipedia

    en.wikipedia.org/wiki/Async/await

    In C++, await (named co_await in C++) has been officially merged into version 20. [25] Support for it, coroutines, and the keywords such as co_await are available in GCC and MSVC compilers while Clang has partial support.

  7. Spurious wakeup - Wikipedia

    en.wikipedia.org/wiki/Spurious_wakeup

    In the Solaris implementation of condition variables, a spurious wakeup may occur without the condition being assigned if the process is signaled; the wait system call aborts and returns EINTR. [2] The Linux p-thread implementation of condition variables guarantees that it will not do that. [3] [4]

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    mail.aol.com

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  9. Non-blocking algorithm - Wikipedia

    en.wikipedia.org/wiki/Non-blocking_algorithm

    Wait-freedom is the strongest non-blocking guarantee of progress, combining guaranteed system-wide throughput with starvation-freedom.An algorithm is wait-free if every operation has a bound on the number of steps the algorithm will take before the operation completes. [15]