C++ (Cpp) GetHighResClock示例

示例#1

文件： unix_rand.c 项目： lpy/mozilla-central

size_t RNG_GetNoise(void *buf, size_t maxbytes)
{
    struct timeval tv;
    int n = 0;
    int c;

    n = GetHighResClock(buf, maxbytes);
    maxbytes -= n;

    (void)gettimeofday(&tv, 0);
    c = CopyLowBits((char*)buf+n, maxbytes, &tv.tv_usec, sizeof(tv.tv_usec));
    n += c;
    maxbytes -= c;
    c = CopyLowBits((char*)buf+n, maxbytes, &tv.tv_sec, sizeof(tv.tv_sec));
    n += c;
    return n;
}

示例#2

size_t RNG_GetNoise(void *buf, size_t maxbytes)
{
    struct timeval tv;
    int n = 0;
    int c;

    n = GetHighResClock(buf, maxbytes);
    maxbytes -= n;

#if defined(__sun) && (defined(_svr4) || defined(SVR4)) || defined(sony)
    (void)gettimeofday(&tv);
#else
    (void)gettimeofday(&tv, 0);
#endif
    c = CopyLowBits((char*)buf+n, maxbytes, &tv.tv_usec, sizeof(tv.tv_usec));
    n += c;
    maxbytes -= c;
    c = CopyLowBits((char*)buf+n, maxbytes, &tv.tv_sec, sizeof(tv.tv_sec));
    n += c;
    return n;
}