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Pthreads (POSIX Threads) is a standardised C-based API for creating and manipulating threads on a POSIX-compliant system. It is defined by the standard "POSIX.1c, Threads extensions (IEEE Std 1003.1c-1995)", and subsequently by the Single Unix Specification.
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Linux C++ Timer Class: How can I improve the accuracy?
gettimeofday should not be used to measure time. Use clock_gettime(CLOCK_MONOTONIC) instead - this clock is not affected by discontinuous jumps in the system time (e.g. if the system administrator ma …