make more use of shifted_bit()
technically, this introduces a redundant AND, but the compiler is smart enough to prove that (((A & M) ^ B) & M) == ((A ^ B) & M).
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@ -39,6 +39,9 @@ typedef unsigned int uint;
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#define __stringify(x) #x
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#define stringify(x) __stringify(x)
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#define shifted_bit(in, from, to) \
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(((uint)(in) / (from > to ? from / to : 1) * (to > from ? to / from : 1)) & to)
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
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# define ATTR_UNUSED __attribute__((unused))
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# define ATTR_NORETURN __attribute__((noreturn))
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@ -125,8 +125,6 @@ make_flags( int flags, char *buf )
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#define S_NEXPIRE (1<<6) /* temporary: new expiration state */
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#define S_DELETE (1<<7) /* ephemeral: flags propagation is a deletion */
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#define mvBit(in,ib,ob) ((uchar)(((uint)in) * (ob) / (ib)))
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typedef struct sync_rec {
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struct sync_rec *next;
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/* string_list_t *keywords; */
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@ -1675,7 +1673,7 @@ box_loaded( int sts, void *aux )
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}
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} else {
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/* The trigger is an expiration transaction being ongoing ... */
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if ((t == S) && ((mvBit(srec->status, S_EXPIRE, S_EXPIRED) ^ srec->status) & S_EXPIRED)) {
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if ((t == S) && ((shifted_bit(srec->status, S_EXPIRE, S_EXPIRED) ^ srec->status) & S_EXPIRED)) {
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/* ... but the actual action derives from the wanted state. */
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if (srec->status & S_NEXPIRE)
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aflags |= F_DELETED;
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@ -784,11 +784,6 @@ conf_wakeup( wakeup_t *tmr, int to )
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}
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}
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#define shifted_bit(in, from, to) \
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(((uint)(in) & from) \
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/ (from > to ? from / to : 1) \
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* (to > from ? to / from : 1))
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static void
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event_wait( void )
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{
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