rte_posix_osadapter_poll.h

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#ifndef RTE_POSIX_OSADAPTER_POLL_H
#define RTE_POSIX_OSADAPTER_POLL_H
 
#include <limits.h>
#include <stdint.h>
#include <time.h>

static inline int posix_poll_timeout_ms(uint32_t timeout_ms)
{
    return (timeout_ms > (uint32_t)INT_MAX) ? INT_MAX : (int)timeout_ms;
}

static inline int posix_remaining_ms(const struct timespec *deadline)
{
    struct timespec now;
    int remaining = -1;
 
    if (clock_gettime(CLOCK_MONOTONIC, &now) == 0)
    {
        int64_t delta_ms = ((int64_t)deadline->tv_sec - (int64_t)now.tv_sec) * 1000;
 
        delta_ms += ((int64_t)deadline->tv_nsec - (int64_t)now.tv_nsec) / 1000000;
        if (delta_ms < 0)
        {
            delta_ms = 0;
        }
        else if (delta_ms > (int64_t)INT_MAX)
        {
            delta_ms = (int64_t)INT_MAX;
        }
        else
        {
            /* within [0, INT_MAX]: used as is */
        }
        remaining = (int)delta_ms;
    }
    return remaining;
}
 
#endif /* RTE_POSIX_OSADAPTER_POLL_H */