Return to mbuf.c CVS log

Up to [CSRG BSD Unix] / 42BSD / ucb / netstat

Annotation of 42BSD/ucb/netstat/mbuf.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char sccsid[] = "@(#)mbuf.c     4.5 82/12/18";
        !             3: #endif
        !             4: 
        !             5: #include <sys/param.h>
        !             6: #include <sys/mbuf.h>
        !             7: 
        !             8: struct mbstat mbstat;
        !             9: extern int kmem;
        !            10: 
        !            11: static struct mbtypes {
        !            12:        int     mt_type;
        !            13:        char    *mt_name;
        !            14: } mbtypes[] = {
        !            15:        { MT_DATA,      "data" },
        !            16:        { MT_HEADER,    "packet headers" },
        !            17:        { MT_SOCKET,    "socket structures" },
        !            18:        { MT_PCB,       "protocol control blocks" },
        !            19:        { MT_RTABLE,    "routing table entries" },
        !            20:        { MT_HTABLE,    "IMP host table entries" },
        !            21: #ifdef notdef
        !            22:        { MT_ATABLE,    "address resolution tables" },
        !            23: #endif
        !            24:        { MT_FTABLE,    "fragment reassembly queue headers" },
        !            25:        { MT_SONAME,    "socket names and addresses" },
        !            26:        { MT_ZOMBIE,    "zombie process information" },
        !            27:        { MT_SOOPTS,    "socket options" },
        !            28:        { 0, 0 }
        !            29: };
        !            30: 
        !            31: /*
        !            32:  * Print mbuf statistics.
        !            33:  */
        !            34: mbpr(mbaddr)
        !            35:        off_t mbaddr;
        !            36: {
        !            37:        register int totmem, totfree, totmbufs;
        !            38:        register struct mbtypes *mp;
        !            39: 
        !            40:        if (mbaddr == 0) {
        !            41:                printf("mbstat: symbol not in namelist\n");
        !            42:                return;
        !            43:        }
        !            44:        klseek(kmem, mbaddr, 0);
        !            45:        if (read(kmem, &mbstat, sizeof (mbstat)) != sizeof (mbstat)) {
        !            46:                printf("mbstat: bad read\n");
        !            47:                return;
        !            48:        }
        !            49:        printf("%d/%d mbufs in use:\n",
        !            50:                mbstat.m_mbufs - mbstat.m_mbfree, mbstat.m_mbufs);
        !            51:        totmbufs = 0;
        !            52:        for (mp = mbtypes; mp->mt_name; mp++)
        !            53:                if (mbstat.m_mtypes[mp->mt_type]) {
        !            54:                        printf("\t%d mbufs allocated to %s\n",
        !            55:                                mbstat.m_mtypes[mp->mt_type], mp->mt_name);
        !            56:                        totmbufs += mbstat.m_mtypes[mp->mt_type];
        !            57:                }
        !            58:        if (totmbufs != mbstat.m_mbufs - mbstat.m_mbfree)
        !            59:                printf("*** %d mbufs missing ***\n",
        !            60:                        (mbstat.m_mbufs - mbstat.m_mbfree) - totmbufs);
        !            61:        printf("%d/%d mapped pages in use\n",
        !            62:                mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
        !            63:        totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * CLBYTES;
        !            64:        totfree = mbstat.m_mbfree * MSIZE + mbstat.m_clusters * CLBYTES;
        !            65:        printf("%d Kbytes allocated to network (%d%% in use)\n",
        !            66:                totmem / 1024, (totmem - totfree) * 100 / totmem);
        !            67:        printf("%d requests for memory denied\n", mbstat.m_drops);
        !            68: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.