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[vlp.git] / int / memory.c

diff --git a/int/memory.c b/int/memory.c
deleted file mode 100644 (file)
index b25e76b..0000000
--- a/int/memory.c
+++ /dev/null
@@ -1,225 +0,0 @@
-#include        "depend.h"
-#include        "genint.h"
-#include        "int.h"
-#include       "process.h"
-#include       "intproto.h"
-
-/* Memory management routines */
-
-#ifndef NO_PROTOTYPES
-static void compandtake(word, word *, word *, word *, bool);
-static void sinsert(word);
-#else
-static void compandtake();
-static void sinsert();
-#endif
-
-
-int compactify_allowed=1;
-#define space 400 /* words */
-
-
-void request(app, ah, am)
-word app, *ah, *am;
-{
-    word t2, t4, t5;
-    bool wascompactified, found;
-
-    if (app >= MAXAPPT) errsignal(RTEMEMOV);
-    wascompactified = FALSE;
-
-    if( compactify_allowed && thisp->force_compactification ){
-         compactify();
-         thisp->force_compactification=FALSE;
-         wascompactified=TRUE;
-    }
-
-    if (thisp->freeitem != 0)           /* reserve dictionary item */
-    {
-        *ah = thisp->freeitem;
-        thisp->freeitem = M[ *ah ];
-    }
-    else
-    {
-        *ah = thisp->lastitem-2;
-        if (*ah <= thisp->lastused + space)     /* cannot take free item */
-        {
-            if( compactify_allowed )
-                if( !wascompactified ) compactify(),wascompactified=TRUE;
-                else ;
-            else
-                thisp->force_compactification=TRUE;
-            *ah = thisp->lastitem-2;
-            if (*ah <= thisp->lastused) errsignal(RTEMEMOV);
-        }
-
-        thisp->lastitem = *ah;
-        M[ *ah+1 ] = 0;                 /* clear mark */
-    }                                   /* now we have a free dict. item */
-
-
-    if (app == 2 && thisp->headk2 != 0)    /* special case app=2 */
-    {
-        *am = thisp->headk2;
-        thisp->headk2 = M[ *am+SHORTLINK ];
-    }
-    else
-    {
-        word t1 = thisp->headk;
-        found = FALSE;
-        t4 = 0;
-        while (t1 != thisp->lower && !found)
-        {
-            t2 = M[ t1 ];
-            if (t2 == app) found = TRUE;
-            else
-                if (t2-app >= 2) found = TRUE;
-                else
-                {
-                    t4 = t1;
-                    t1 = M[ t1+LONGLINK ];
-                }
-        }
-        if( found ) {
-            t5 = M[ t1+SHORTLINK ];
-            if (t5 != 0) M[ t5+LONGLINK ] = M[ t1+LONGLINK ];
-            else t5 = M[ t1+LONGLINK ];
-            if (t4 == 0) thisp->headk = t5;  else M[ t4+LONGLINK ] = t5;
-            *am = t1;
-            if (t2 > app)           /* at least two extra words */
-            {
-                t5 = t1+app;
-                M[ t5 ] = t2-app;
-                sinsert(t5);
-            }
-        }
-        else
-        if ( thisp->lastitem - thisp->lastused > app + space )
-        {
-            *am = thisp->lastused+1;
-            thisp->lastused += app;
-        }
-        else
-        {
-            M[ *ah ] = thisp->freeitem;        /* return dictionary item */
-            thisp->freeitem = *ah;
-            if( compactify_allowed )
-                if( !wascompactified ) compactify();
-                else ;
-            else
-                thisp->force_compactification=TRUE;
-            *ah = thisp->lastitem-2;           /* reserve dictionary item */
-            thisp->lastitem = *ah;
-            M[ *ah+1 ] = 0;                    /* clear mark */
-            if ( thisp->lastitem - thisp->lastused > app ) {
-                *am = thisp->lastused+1;
-                thisp->lastused += app;
-            }
-            else
-                errsignal(RTEMEMOV);
-        }
-    }
-
-    M[ *am ] = app;
-    for (t2 = *am+1;  t2 < *am+app;  t2++ ) M[ t2 ] = 0;
-    M[ *ah ] = *am;
-
-}
-
-
-static void sinsert(am)                        /* Dispose of a memory item. */
-word am;
-{
-    word t1, t2, t3, t4;
-
-    t1 = M[ am ];                       /* appetite */
-    if (t1 == 2)                        /* a special list should be used */
-    {
-        M[ am+SHORTLINK ] = thisp->headk2;
-        thisp->headk2 = am;
-    }
-    else
-    {
-        t2 = thisp->headk;
-        t4 = 0;
-        while (TRUE)                    /* look for a proper place */
-        {
-            t3 = M[ t2 ];               /* appetite */
-            if (t1 == t3)               /* an entry with matching appetite */
-            {
-                M[ am+SHORTLINK ] = M[ t2+SHORTLINK ];
-                M[ t2+SHORTLINK ] = am;
-                break;
-            }
-            else
-                if (t1 < t3)
-                {
-                    M[ am+LONGLINK ] = t2;
-                    M[ am+SHORTLINK ] = 0;
-                    if (t4 == 0) thisp->headk = am;
-                    else M[ t4+LONGLINK ] = am;
-                    break;
-                }
-                else
-                {
-                    t4 = t2;
-                    t2 = M[ t2+LONGLINK ];
-                }
-        }
-    }
-}
-
-
-void disp(virt)                         /* Simple kill. */
-virtaddr *virt;
-{
-    word t1, t2;
-
-    t1 = M[ virt->addr+1 ];
-    if (t1 == virt->mark)              /* not none */
-    {
-        t1++;                           /* advance mark */
-        t2 = M[ virt->addr ];           /* am */
-        M[ virt->addr+1 ] = t1;
-        if (t1 != MAXMARKER)            /* mark still usable */
-        {
-            M[ virt->addr ] = thisp->freeitem;
-            thisp->freeitem = virt->addr;
-        }                               /* now dictionary item is released */
-        if (t2+M[ t2 ]-1 == thisp->lastused)   /* on the boundary */
-            thisp->lastused = t2-1;
-        else sinsert(t2);
-    }
-} /* end disp */
-
-
-word memavail()                                /* Compute available memory size */
-{
-    word t1, t2, avail;
-
-    avail = thisp->lastitem-thisp->lastused-1; /* contiguos memory */
-    t1 = thisp->headk2;                        /* go through killed 2 list */
-    while (t1 != 0)
-    {
-       avail += 2;
-       t1 = M[ t1+SHORTLINK ];
-    }
-    t1 = thisp->headk;
-    while (t1 != thisp->lower)         /* go through killed object list */
-    {
-       t2 = t1;
-       while (t2 != 0)
-       {
-           avail += M[ t2 ];
-           t2 = M[ t2+SHORTLINK ];
-       }
-       t1 = M[ t1+LONGLINK ];
-    }
-    t1 = thisp->freeitem;              /* go through free item list */
-    while (t1 != 0)
-    {
-       avail += 2;
-       t1 = M[ t1 ];
-    }
-    return(avail);
-} /* end memavail */