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Annotation of xinu/sys/mdump.c, revision 1.1.1.1

1.1       root        1: /* mdump.c - mdump */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <proc.h>
                      6: #include <mem.h>
                      7: 
                      8: /*------------------------------------------------------------------------
                      9:  *  mdump  --  dump free memory list
                     10:  *------------------------------------------------------------------------
                     11:  */
                     12: mdump()
                     13: {
                     14:        PStype  ps;
                     15:        int     i;
                     16:        struct  mblock  *mptr;
                     17:        unsigned free;
                     18:        unsigned avail;
                     19:        unsigned stkmem;
                     20: 
                     21:        disable(ps);
                     22: 
                     23:        /* calculate current size of free memory and stack memory */
                     24: 
                     25:        for( free=0,mptr=memlist.mnext ; mptr!=(struct mblock*)NULL ;
                     26:            mptr=mptr->mnext)
                     27:                free += mptr->mlen;
                     28:        for (stkmem=0,i=0 ; i<NPROC ; i++) {
                     29:                if (proctab[i].pstate != PRFREE)
                     30:                        stkmem += (unsigned)proctab[i].pstklen;
                     31:        }
                     32:        kprintf("Memory: %u bytes real memory, %u text, %u data, %u bss\n",
                     33:                (unsigned)(sizeof(int)) + (unsigned)maxaddr, (unsigned) &etext,
                     34:                (unsigned) &edata - (unsigned) &etext,
                     35:                (unsigned) &end - (unsigned) &edata);
                     36:        avail = (unsigned)maxaddr - (unsigned) &end + (unsigned)(sizeof(int));
                     37:        kprintf(" initially: %5u avail\n", avail);
                     38:        kprintf(" presently: %5u avail, %5u stack, %5u heap\n",
                     39:                free, stkmem, avail - stkmem - free);
                     40:        kprintf(" free list:\n");
                     41:        for( mptr=memlist.mnext ; mptr!=(struct mblock *)NULL ;
                     42:             mptr=mptr->mnext)
                     43:                kprintf("   block at %6o, length %5u (0%o)\n",
                     44:                        mptr, mptr->mlen, mptr->mlen);
                     45:        restore(ps);
                     46: }

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