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7c99b6764e
This theoretically allows a compiler to optimize (parts of) the array away if unused. While there, make the array size implicit and use a _Static_assert() to ensure that the definition matches up with the number of elements in the list.
103 lines
3.9 KiB
C
103 lines
3.9 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)timed.h 8.1 (Berkeley) 6/2/93
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*
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* $FreeBSD$
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*/
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#ifndef _PROTOCOLS_TIMED_H_
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#define _PROTOCOLS_TIMED_H_
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/*
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* Time Synchronization Protocol
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*/
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#define TSPVERSION 1
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#define ANYADDR NULL
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struct tsp {
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u_int8_t tsp_type;
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u_int8_t tsp_vers;
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u_int16_t tsp_seq;
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union {
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struct {
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int32_t tv_sec;
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int32_t tv_usec;
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} tspu_time;
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char tspu_hopcnt;
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} tsp_u;
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char tsp_name[MAXHOSTNAMELEN];
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};
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#define tsp_time tsp_u.tspu_time
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#define tsp_hopcnt tsp_u.tspu_hopcnt
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/*
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* Command types.
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*/
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#define TSP_ANY 0 /* match any types */
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#define TSP_ADJTIME 1 /* send adjtime */
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#define TSP_ACK 2 /* generic acknowledgement */
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#define TSP_MASTERREQ 3 /* ask for master's name */
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#define TSP_MASTERACK 4 /* acknowledge master request */
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#define TSP_SETTIME 5 /* send network time */
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#define TSP_MASTERUP 6 /* inform slaves that master is up */
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#define TSP_SLAVEUP 7 /* slave is up but not polled */
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#define TSP_ELECTION 8 /* advance candidature for master */
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#define TSP_ACCEPT 9 /* support candidature of master */
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#define TSP_REFUSE 10 /* reject candidature of master */
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#define TSP_CONFLICT 11 /* two or more masters present */
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#define TSP_RESOLVE 12 /* masters' conflict resolution */
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#define TSP_QUIT 13 /* reject candidature if master is up */
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#define TSP_DATE 14 /* reset the time (date command) */
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#define TSP_DATEREQ 15 /* remote request to reset the time */
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#define TSP_DATEACK 16 /* acknowledge time setting */
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#define TSP_TRACEON 17 /* turn tracing on */
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#define TSP_TRACEOFF 18 /* turn tracing off */
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#define TSP_MSITE 19 /* find out master's site */
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#define TSP_MSITEREQ 20 /* remote master's site request */
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#define TSP_TEST 21 /* for testing election algo */
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#define TSP_SETDATE 22 /* New from date command */
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#define TSP_SETDATEREQ 23 /* New remote for above */
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#define TSP_LOOP 24 /* loop detection packet */
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#define TSPTYPENUMBER 25
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#ifdef TSPTYPES
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static char const * const tsptype[] =
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{ "ANY", "ADJTIME", "ACK", "MASTERREQ", "MASTERACK", "SETTIME", "MASTERUP",
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"SLAVEUP", "ELECTION", "ACCEPT", "REFUSE", "CONFLICT", "RESOLVE", "QUIT",
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"DATE", "DATEREQ", "DATEACK", "TRACEON", "TRACEOFF", "MSITE", "MSITEREQ",
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"TEST", "SETDATE", "SETDATEREQ", "LOOP" };
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_Static_assert(sizeof(tsptype) / sizeof(const char *) == TSPTYPENUMBER,
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"Size of tsptype does not match TSPTYPENUMBER");
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#endif
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#endif /* !_TIMED_H_ */
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