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rpmsw.h
#ifndef H_RPMSW #define H_RPMSW /** \ingroup rpmio * \file rpmio/rpmsw.h */ #include <unistd.h> #include <sys/time.h> #ifdef __cplusplus extern "C" { #endif /** \ingroup rpmsw */ typedef unsigned long int rpmtime_t; /** \ingroup rpmsw */ typedef struct rpmsw_s * rpmsw; /** \ingroup rpmsw */ typedef struct rpmop_s * rpmop; /** \ingroup rpmsw */ struct rpmsw_s { union { struct timeval tv; unsigned long long int ticks; unsigned long int tocks[2]; } u; }; /** \ingroup rpmsw * Cumulative statistics for an operation. */ struct rpmop_s { struct rpmsw_s begin; /*!< Starting time stamp. */ int count; /*!< Number of operations. */ size_t bytes; /*!< Number of bytes transferred. */ rpmtime_t usecs; /*!< Number of ticks. */ }; /** \ingroup rpmsw * Return benchmark time stamp. * @param *sw time stamp * @return 0 on success */ rpmsw rpmswNow(rpmsw sw); /** \ingroup rpmsw * Return benchmark time stamp difference. * @param *end end time stamp * @param *begin begin time stamp * @return difference in micro-seconds */ rpmtime_t rpmswDiff(rpmsw end, rpmsw begin); /** \ingroup rpmsw * Return benchmark time stamp overhead. * @return overhead in micro-seconds */ rpmtime_t rpmswInit(void); /** \ingroup rpmsw * Enter timed operation. * @param op operation statistics * @param rc -1 clears usec counter * @return 0 always */ int rpmswEnter(rpmop op, ssize_t rc); /** \ingroup rpmsw * Exit timed operation. * @param op operation statistics * @param rc per-operation data (e.g. bytes transferred) * @return cumulative usecs for operation */ rpmtime_t rpmswExit(rpmop op, ssize_t rc); /** \ingroup rpmsw * Sum statistic counters. * @param to result statistics * @param from operation statistics * @return cumulative usecs for operation */ rpmtime_t rpmswAdd(rpmop to, rpmop from); /** \ingroup rpmsw * Subtract statistic counters. * @param to result statistics * @param from operation statistics * @return cumulative usecs for operation */ rpmtime_t rpmswSub(rpmop to, rpmop from); #ifdef __cplusplus } #endif #endif /* H_RPMSW */