Function getEventMask

app/redis-6.2.6/src/ae_ff_kqueue.c:53–55

#define EVENT_MASK_ENCODE(fd, mask) (((mask) & 0x3) << EVENT_MASK_OFFSET(fd))

static inline int getEventMask(const char *eventsMask, int fd) {
    return (eventsMask[fd/4] >> EVENT_MASK_OFFSET(fd)) & 0x3;
}

static inline void addEventMask(char *eventsMask, int fd, int mask) {
    eventsMask[fd/4] |= EVENT_MASK_ENCODE(fd, mask);