src/common/readobj.c

#ifndef lint
static const char RCSid[] = "$Id: readobj.c,v 2.30 2025/06/23 19:56:47 greg Exp $";
#endif
/*
 *  readobj.c - routines for reading in object descriptions.
 *
 *  External symbols declared in object.h
 */

#include "copyright.h"

#include  <ctype.h>

#include  "platform.h"
#include  "standard.h"
#include  "object.h"
#include  "otypes.h"

#ifndef OBJMEMOPT
#define OBJMEMOPT       0               /* optimize object block memory? */
#endif

OBJREC  *objblock[MAXOBJBLK];           /* our objects */
OBJECT  nobjects = 0;                   /* # of objects */


void
readobj(                                /* read in an object file or stream */
        char  *inpspec
)
{
        OBJECT  lastobj;
        FILE  *infp;
        char  buf[2048];
        int  c;

        lastobj = nobjects;
        if (inpspec == NULL) {
                infp = stdin;
                inpspec = "standard input";
        } else if (inpspec[0] == '!') {
                if ((infp = popen(inpspec+1, "r")) == NULL) {
                        sprintf(errmsg, "cannot execute \"%s\"", inpspec);
                        error(SYSTEM, errmsg);
                }
        } else if ((infp = fopen(inpspec, "r")) == NULL) {
                sprintf(errmsg, "cannot open scene file \"%s\"", inpspec);
                error(SYSTEM, errmsg);
        }
#ifdef getc_unlocked                    /* avoid stupid semaphores */
        flockfile(infp);
#endif
        while ((c = getc(infp)) != EOF) {
                if (isspace(c))
                        continue;
                if (c == '#') {                         /* comment */
                        fgets(buf, sizeof(buf), infp);
                } else if (c == '!') {                  /* command */
                        ungetc(c, infp);
                        fgetline(buf, sizeof(buf), infp);
                        readobj(buf);
                } else {                                /* object */
                        ungetc(c, infp);
                        getobject(inpspec, infp);
                }
        }
        if (inpspec[0] == '!') {
                if (pclose(infp) != 0) {
                        sprintf(errmsg, "bad status from \"%s\"", inpspec);
                        error(WARNING, errmsg);
                }
        } else if (infp != stdin)
                fclose(infp);
#ifdef getc_unlocked
        else
                funlockfile(infp);
#endif
        if (nobjects == lastobj) {
                sprintf(errmsg, "(%s): empty file", inpspec);
                error(WARNING, errmsg);
        }
}


void
getobject(                              /* read the next object */
        char  *name,
        FILE  *fp
)
{
#define OALIAS  -2
        OBJECT  obj;
        char  sbuf[MAXSTR];
        int  rval;
        OBJREC  *objp;

        if ((obj = newobject()) == OVOID)
                error(SYSTEM, "out of object space");
        objp = objptr(obj);
                                        /* get modifier */
        strcpy(sbuf, "EOF");
        fgetword(sbuf, MAXSTR, fp);
        if (strchr(sbuf, '\t')) {
                sprintf(errmsg, "(%s): illegal tab in modifier \"%s\"",
                                        name, sbuf);
                error(USER, errmsg);
        }
        if (!strcmp(sbuf, VOIDID))
                objp->omod = OVOID;
        else if (!strcmp(sbuf, ALIASMOD))
                objp->omod = OALIAS;
        else if ((objp->omod = modifier(sbuf)) == OVOID) {
                sprintf(errmsg, "(%s): undefined modifier \"%s\"", name, sbuf);
                error(USER, errmsg);
        }
                                        /* get type */
        strcpy(sbuf, "EOF");
        fgetword(sbuf, MAXSTR, fp);
        if ((objp->otype = otype(sbuf)) < 0) {
                sprintf(errmsg, "(%s): unknown type \"%s\"", name, sbuf);
                error(USER, errmsg);
        }
                                        /* get identifier */
        sbuf[0] = '\0';
        fgetword(sbuf, MAXSTR, fp);
        if (strchr(sbuf, '\t')) {
                sprintf(errmsg, "(%s): illegal tab in identifier \"%s\"",
                                        name, sbuf);
                error(USER, errmsg);
        }
        objp->oname = savqstr(sbuf);
                                        /* get arguments */
        if (objp->otype == MOD_ALIAS) {
                OBJECT  ref;
                OBJREC  *rfp;
                strcpy(sbuf, "EOF");
                fgetword(sbuf, MAXSTR, fp);
                if ((ref = modifier(sbuf)) == OVOID) {
                        sprintf(errmsg, "(%s): bad reference \"%s\"",
                                        name, sbuf);
                        objerror(objp, USER, errmsg);
                }                       /* skip pass-thru aliases */
                while ((rfp=objptr(ref))->otype == MOD_ALIAS &&
                                !rfp->oargs.nsargs & (rfp->omod != OVOID))
                        ref = rfp->omod;

                if ((objp->omod == OALIAS) | (objp->omod == rfp->omod)) {
                        objp->omod = ref;
                } else {
                        objp->oargs.sarg = (char **)malloc(sizeof(char *));
                        if (objp->oargs.sarg == NULL)
                                error(SYSTEM, "out of memory in getobject");
                        objp->oargs.nsargs = 1;
                        objp->oargs.sarg[0] = savestr(sbuf);
                }
        } else if ((rval = readfargs(&objp->oargs, fp)) == 0) {
                sprintf(errmsg, "(%s): bad arguments", name);
                objerror(objp, USER, errmsg);
        } else if (rval < 0) {
                sprintf(errmsg, "(%s): error reading scene", name);
                error(SYSTEM, errmsg);
        }
        if (objp->omod == OALIAS) {
                sprintf(errmsg, "(%s): inappropriate use of '%s' modifier",
                                name, ALIASMOD);
                objerror(objp, USER, errmsg);
        }
                                        /* initialize */
        objp->os = NULL;

        insertobject(obj);              /* add to global structure */
#undef OALIAS
}


static void
optimize_objblock(int i)                /* consolidate memory in object block */
{
#if OBJMEMOPT
        OBJREC          *o, *co;
        int             n = 0;
        unsigned long   sargcnt = 0, iargcnt = 0, fargcnt = 0, namecnt = 0;

        if (i < 0 || objblock[i] == NULL || objblock[i][OBJBLKSIZ].otype < 0)
                return;                 /* invalid or already done */

        for (o = objblock[i]+OBJBLKSIZ; o-- > objblock[i]; ) {
                if (o->oname == NULL)   /* too early to optimize? */
                        return;
                if (o->os != NULL)      /* too late to optimize? */
                        return;
                n += (o->oargs.nsargs > 0) | (o->oargs.nfargs > 0);
                sargcnt += o->oargs.nsargs;
                fargcnt += o->oargs.nfargs;
#ifdef  IARGS
                iargcnt += o->oargs.niargs;
#endif
                namecnt += strlen(o->oname)+1;
        }
        if (n < OBJBLKSIZ/10)           /* never happens? */
                return;
                                        /* prep consolidation object */
        co = objblock[i]+OBJBLKSIZ;
        co->oargs.nsargs = sargcnt;
        co->oargs.nfargs = fargcnt;
        if ((co->oargs.nsargs != sargcnt) | (co->oargs.nfargs != fargcnt))
                return;                 /* overrun condition */

        co->oname = (char *)malloc(sizeof(char)*namecnt);
        co->oargs.sarg = (char **)malloc(sizeof(char *)*sargcnt);
        co->oargs.farg = (RREAL *)malloc(sizeof(RREAL)*fargcnt);
        if ((co->oname == NULL) | (co->oargs.sarg == NULL) |
                        (co->oargs.farg == NULL)) {
                free(co->oname);
                free(co->oargs.sarg); free(co->oargs.farg);
                memset(co, 0, sizeof(OBJREC));
                return;                 /* insufficient memory */
        }
#ifdef  IARGS
        co->oargs.niargs = iargcnt;
        co->oargs.iarg = (long *)malloc(sizeof(long)*iargcnt);
        if (co->oargs.iarg == NULL) {
                free(co->oname);
                free(co->oargs.sarg); free(co->oargs.farg);
                memset(co, 0, sizeof(OBJREC));
                return;                 /* insufficient memory */
        }
        iargcnt = 0;
#endif
        namecnt = sargcnt = fargcnt = 0;
        for (o = objblock[i]+OBJBLKSIZ; o-- > objblock[i]; ) {
                n = strlen(o->oname)+1;
                memcpy(co->oname + namecnt, o->oname, n);
                freeqstr(o->oname);
                o->oname = co->oname + namecnt;
                namecnt += n;
                if (o->oargs.nsargs) {
                        memcpy(co->oargs.sarg+sargcnt, o->oargs.sarg,
                                        sizeof(char *)*o->oargs.nsargs);
                        free(o->oargs.sarg);
                        o->oargs.sarg = co->oargs.sarg + sargcnt;
                        sargcnt += o->oargs.nsargs;
                }
                if (o->oargs.nfargs) {
                        memcpy(co->oargs.farg+fargcnt, o->oargs.farg,
                                        sizeof(RREAL)*o->oargs.nfargs);
                        free(o->oargs.farg);
                        o->oargs.farg = co->oargs.farg + fargcnt;
                        fargcnt += o->oargs.nfargs;
                }
#ifdef  IARGS
                if (o->oargs.niargs) {
                        memcpy(co->oargs.iarg+iargcnt, o->oargs.iarg,
                                        sizeof(long)*o->oargs.niargs);
                        free(o->oargs.iarg);
                        o->oargs.iarg = co->oargs.iarg + iargcnt;
                        iargcnt += o->oargs.niargs;
                }
#endif
        }
        co->otype = -1;         /* flag for optimized block */
#endif
}


OBJECT
newobject(void)                         /* get a new object */
{
        int  i;

        if ((nobjects & (OBJBLKSIZ-1)) == 0) {  /* new block */
                i = nobjects >> OBJBLKSHFT;
                optimize_objblock(i-1);         /* optimize previous block */
                errno = 0;
                if (i >= MAXOBJBLK)
                        return(OVOID);
                objblock[i] = (OBJREC *)calloc(OBJBLKSIZ+OBJMEMOPT,
                                                sizeof(OBJREC));
                if (objblock[i] == NULL)
                        return(OVOID);
        }
        return(nobjects++);
}

void
freeobjects(                            /* free a range of objects */
        int firstobj,
        int nobjs
)
{
        int  obj;
                                        /* check bounds */
        if (firstobj < 0)
                return;
        if (nobjs <= 0)
                return;
        if (firstobj + nobjs > nobjects)
                return;
                                        /* clear objects */
        for (obj = firstobj+nobjs; obj-- > firstobj; ) {
                OBJREC  *o = objptr(obj);
                free_os(o);             /* free client memory */
                if (!OBJMEMOPT || !objblock[obj>>OBJBLKSHFT][OBJBLKSIZ].otype) {
                        freeqstr(o->oname);
                        freefargs(&o->oargs);
                }
                memset(o, 0, sizeof(OBJREC));
        }
                                        /* free objects off end */
        for (obj = nobjects; obj-- > 0; )
                if (objptr(obj)->oname != NULL)
                        break;
        if (++obj >= nobjects)
                return;
        while (nobjects > obj)          /* free empty end blocks */
                if ((--nobjects & (OBJBLKSIZ-1)) == 0) {
                        int     i = nobjects >> OBJBLKSHFT;
                                        /* consolidated block? */
                        if (OBJMEMOPT && objblock[i][OBJBLKSIZ].otype < 0) {
                                free(objblock[i][OBJBLKSIZ].oname);
                                freefargs(&objblock[i][OBJBLKSIZ].oargs);
                        }
                        free(objblock[i]);
                        objblock[i] = NULL;
                }
        truncobjndx();                  /* truncate modifier look-up */
}
Revision:	2.31
Committed:	Tue Jun 24 21:04:16 2025 UTC (9 hours, 57 minutes ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 2.30:	+6 -6 lines
Log Message:	perf: Turned off OBJMEMOPT by default as it seemed to do little in practice
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.31	static const char RCSid[] = "$Id: readobj.c,v 2.30 2025/06/23 19:56:47 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* readobj.c - routines for reading in object descriptions.
6			*
7	greg	2.8	* External symbols declared in object.h
8			*/
9
10	greg	2.9	#include "copyright.h"
11	greg	1.1
12	schorsch	2.13	#include <ctype.h>
13
14	greg	2.17	#include "platform.h"
15	greg	1.1	#include "standard.h"
16			#include "object.h"
17			#include "otypes.h"
18
19	greg	2.30	#ifndef OBJMEMOPT
20	greg	2.31	#define OBJMEMOPT 0 /* optimize object block memory? */
21	greg	2.30	#endif
22	greg	1.1
23			OBJREC objblock[MAXOBJBLK]; / our objects */
24	greg	1.4	OBJECT nobjects = 0; /* # of objects */
25	greg	1.1
26
27	greg	2.8	void
28	greg	2.22	readobj( /* read in an object file or stream */
29			char *inpspec
30			)
31	greg	1.1	{
32	greg	2.4	OBJECT lastobj;
33	greg	1.1	FILE *infp;
34	greg	2.19	char buf[2048];
35	greg	2.22	int c;
36	greg	1.1
37	greg	2.4	lastobj = nobjects;
38			if (inpspec == NULL) {
39	greg	1.1	infp = stdin;
40	greg	2.4	inpspec = "standard input";
41			} else if (inpspec[0] == '!') {
42			if ((infp = popen(inpspec+1, "r")) == NULL) {
43			sprintf(errmsg, "cannot execute \"%s\"", inpspec);
44	greg	1.1	error(SYSTEM, errmsg);
45			}
46	greg	2.4	} else if ((infp = fopen(inpspec, "r")) == NULL) {
47			sprintf(errmsg, "cannot open scene file \"%s\"", inpspec);
48	greg	1.1	error(SYSTEM, errmsg);
49			}
50	greg	2.25	#ifdef getc_unlocked /* avoid stupid semaphores */
51			flockfile(infp);
52			#endif
53	greg	1.1	while ((c = getc(infp)) != EOF) {
54			if (isspace(c))
55			continue;
56			if (c == '#') { /* comment */
57			fgets(buf, sizeof(buf), infp);
58	greg	1.2	} else if (c == '!') { /* command */
59	greg	1.1	ungetc(c, infp);
60	greg	1.2	fgetline(buf, sizeof(buf), infp);
61	greg	1.1	readobj(buf);
62			} else { /* object */
63			ungetc(c, infp);
64	greg	2.4	getobject(inpspec, infp);
65	greg	1.1	}
66			}
67	greg	2.27	if (inpspec[0] == '!') {
68			if (pclose(infp) != 0) {
69			sprintf(errmsg, "bad status from \"%s\"", inpspec);
70	greg	2.28	error(WARNING, errmsg);
71	greg	2.27	}
72			} else if (infp != stdin)
73	greg	1.1	fclose(infp);
74	greg	2.25	#ifdef getc_unlocked
75			else
76			funlockfile(infp);
77			#endif
78	greg	2.4	if (nobjects == lastobj) {
79			sprintf(errmsg, "(%s): empty file", inpspec);
80			error(WARNING, errmsg);
81			}
82	greg	1.1	}
83
84
85	greg	2.8	void
86	greg	2.22	getobject( /* read the next object */
87			char *name,
88			FILE *fp
89			)
90	greg	1.1	{
91	greg	2.11	#define OALIAS -2
92	greg	1.1	OBJECT obj;
93			char sbuf[MAXSTR];
94	greg	1.6	int rval;
95	greg	2.22	OBJREC *objp;
96	greg	1.1
97			if ((obj = newobject()) == OVOID)
98			error(SYSTEM, "out of object space");
99			objp = objptr(obj);
100			/* get modifier */
101	greg	1.7	strcpy(sbuf, "EOF");
102			fgetword(sbuf, MAXSTR, fp);
103	greg	2.20	if (strchr(sbuf, '\t')) {
104			sprintf(errmsg, "(%s): illegal tab in modifier \"%s\"",
105			name, sbuf);
106			error(USER, errmsg);
107			}
108	greg	1.1	if (!strcmp(sbuf, VOIDID))
109			objp->omod = OVOID;
110	greg	2.11	else if (!strcmp(sbuf, ALIASMOD))
111			objp->omod = OALIAS;
112	greg	1.1	else if ((objp->omod = modifier(sbuf)) == OVOID) {
113			sprintf(errmsg, "(%s): undefined modifier \"%s\"", name, sbuf);
114			error(USER, errmsg);
115			}
116			/* get type */
117	greg	1.7	strcpy(sbuf, "EOF");
118			fgetword(sbuf, MAXSTR, fp);
119	greg	2.11	if ((objp->otype = otype(sbuf)) < 0) {
120	greg	1.1	sprintf(errmsg, "(%s): unknown type \"%s\"", name, sbuf);
121			error(USER, errmsg);
122			}
123			/* get identifier */
124	greg	1.7	sbuf[0] = '\0';
125			fgetword(sbuf, MAXSTR, fp);
126	greg	2.20	if (strchr(sbuf, '\t')) {
127			sprintf(errmsg, "(%s): illegal tab in identifier \"%s\"",
128			name, sbuf);
129			error(USER, errmsg);
130			}
131	greg	1.1	objp->oname = savqstr(sbuf);
132			/* get arguments */
133	greg	2.11	if (objp->otype == MOD_ALIAS) {
134	greg	2.26	OBJECT ref;
135			OBJREC *rfp;
136	greg	1.7	strcpy(sbuf, "EOF");
137			fgetword(sbuf, MAXSTR, fp);
138	greg	2.26	if ((ref = modifier(sbuf)) == OVOID) {
139	greg	2.11	sprintf(errmsg, "(%s): bad reference \"%s\"",
140			name, sbuf);
141			objerror(objp, USER, errmsg);
142	greg	2.26	} /* skip pass-thru aliases */
143			while ((rfp=objptr(ref))->otype == MOD_ALIAS &&
144			!rfp->oargs.nsargs & (rfp->omod != OVOID))
145			ref = rfp->omod;
146
147			if ((objp->omod == OALIAS) \| (objp->omod == rfp->omod)) {
148			objp->omod = ref;
149	greg	2.11	} else {
150			objp->oargs.sarg = (char *)malloc(sizeof(char ));
151			if (objp->oargs.sarg == NULL)
152			error(SYSTEM, "out of memory in getobject");
153			objp->oargs.nsargs = 1;
154			objp->oargs.sarg[0] = savestr(sbuf);
155	greg	1.1	}
156	greg	1.6	} else if ((rval = readfargs(&objp->oargs, fp)) == 0) {
157	greg	1.1	sprintf(errmsg, "(%s): bad arguments", name);
158			objerror(objp, USER, errmsg);
159	greg	1.6	} else if (rval < 0) {
160			sprintf(errmsg, "(%s): error reading scene", name);
161			error(SYSTEM, errmsg);
162	greg	1.1	}
163	greg	2.11	if (objp->omod == OALIAS) {
164			sprintf(errmsg, "(%s): inappropriate use of '%s' modifier",
165			name, ALIASMOD);
166			objerror(objp, USER, errmsg);
167			}
168	greg	1.1	/* initialize */
169			objp->os = NULL;
170
171			insertobject(obj); /* add to global structure */
172	greg	2.11	#undef OALIAS
173	greg	1.1	}
174
175
176	greg	2.30	static void
177			optimize_objblock(int i) /* consolidate memory in object block */
178			{
179			#if OBJMEMOPT
180			OBJREC o, co;
181			int n = 0;
182			unsigned long sargcnt = 0, iargcnt = 0, fargcnt = 0, namecnt = 0;
183
184			if (i < 0 \|\| objblock[i] == NULL \|\| objblock[i][OBJBLKSIZ].otype < 0)
185	greg	2.31	return; /* invalid or already done */
186	greg	2.30
187			for (o = objblock[i]+OBJBLKSIZ; o-- > objblock[i]; ) {
188			if (o->oname == NULL) /* too early to optimize? */
189			return;
190			if (o->os != NULL) /* too late to optimize? */
191			return;
192			n += (o->oargs.nsargs > 0) \| (o->oargs.nfargs > 0);
193			sargcnt += o->oargs.nsargs;
194			fargcnt += o->oargs.nfargs;
195			#ifdef IARGS
196			iargcnt += o->oargs.niargs;
197			#endif
198			namecnt += strlen(o->oname)+1;
199			}
200	greg	2.31	if (n < OBJBLKSIZ/10) /* never happens? */
201	greg	2.30	return;
202			/* prep consolidation object */
203			co = objblock[i]+OBJBLKSIZ;
204			co->oargs.nsargs = sargcnt;
205			co->oargs.nfargs = fargcnt;
206			if ((co->oargs.nsargs != sargcnt) \| (co->oargs.nfargs != fargcnt))
207			return; /* overrun condition */
208
209			co->oname = (char )malloc(sizeof(char)namecnt);
210			co->oargs.sarg = (char *)malloc(sizeof(char )*sargcnt);
211			co->oargs.farg = (RREAL )malloc(sizeof(RREAL)fargcnt);
212			if ((co->oname == NULL) \| (co->oargs.sarg == NULL) \|
213			(co->oargs.farg == NULL)) {
214			free(co->oname);
215			free(co->oargs.sarg); free(co->oargs.farg);
216	greg	2.31	memset(co, 0, sizeof(OBJREC));
217	greg	2.30	return; /* insufficient memory */
218			}
219			#ifdef IARGS
220			co->oargs.niargs = iargcnt;
221			co->oargs.iarg = (long )malloc(sizeof(long)iargcnt);
222			if (co->oargs.iarg == NULL) {
223			free(co->oname);
224			free(co->oargs.sarg); free(co->oargs.farg);
225	greg	2.31	memset(co, 0, sizeof(OBJREC));
226	greg	2.30	return; /* insufficient memory */
227			}
228			iargcnt = 0;
229			#endif
230			namecnt = sargcnt = fargcnt = 0;
231			for (o = objblock[i]+OBJBLKSIZ; o-- > objblock[i]; ) {
232			n = strlen(o->oname)+1;
233			memcpy(co->oname + namecnt, o->oname, n);
234			freeqstr(o->oname);
235			o->oname = co->oname + namecnt;
236			namecnt += n;
237			if (o->oargs.nsargs) {
238			memcpy(co->oargs.sarg+sargcnt, o->oargs.sarg,
239			sizeof(char )o->oargs.nsargs);
240			free(o->oargs.sarg);
241			o->oargs.sarg = co->oargs.sarg + sargcnt;
242			sargcnt += o->oargs.nsargs;
243			}
244			if (o->oargs.nfargs) {
245			memcpy(co->oargs.farg+fargcnt, o->oargs.farg,
246			sizeof(RREAL)*o->oargs.nfargs);
247			free(o->oargs.farg);
248			o->oargs.farg = co->oargs.farg + fargcnt;
249			fargcnt += o->oargs.nfargs;
250			}
251			#ifdef IARGS
252			if (o->oargs.niargs) {
253			memcpy(co->oargs.iarg+iargcnt, o->oargs.iarg,
254			sizeof(long)*o->oargs.niargs);
255			free(o->oargs.iarg);
256			o->oargs.iarg = co->oargs.iarg + iargcnt;
257			iargcnt += o->oargs.niargs;
258			}
259			#endif
260			}
261			co->otype = -1; /* flag for optimized block */
262			#endif
263			}
264
265
266	greg	2.10	OBJECT
267	greg	2.22	newobject(void) /* get a new object */
268	greg	1.1	{
269	greg	2.22	int i;
270	greg	1.1
271	gwlarson	2.7	if ((nobjects & (OBJBLKSIZ-1)) == 0) { /* new block */
272	greg	2.30	i = nobjects >> OBJBLKSHFT;
273			optimize_objblock(i-1); /* optimize previous block */
274	greg	1.1	errno = 0;
275			if (i >= MAXOBJBLK)
276			return(OVOID);
277	greg	2.30	objblock[i] = (OBJREC *)calloc(OBJBLKSIZ+OBJMEMOPT,
278			sizeof(OBJREC));
279	greg	1.1	if (objblock[i] == NULL)
280			return(OVOID);
281			}
282			return(nobjects++);
283	greg	2.8	}
284
285			void
286	greg	2.22	freeobjects( /* free a range of objects */
287			int firstobj,
288			int nobjs
289			)
290	greg	2.8	{
291	greg	2.22	int obj;
292	greg	2.8	/* check bounds */
293			if (firstobj < 0)
294			return;
295			if (nobjs <= 0)
296			return;
297			if (firstobj + nobjs > nobjects)
298			return;
299			/* clear objects */
300			for (obj = firstobj+nobjs; obj-- > firstobj; ) {
301	greg	2.22	OBJREC *o = objptr(obj);
302	greg	2.8	free_os(o); /* free client memory */
303	greg	2.30	if (!OBJMEMOPT \|\| !objblock[obj>>OBJBLKSHFT][OBJBLKSIZ].otype) {
304			freeqstr(o->oname);
305			freefargs(&o->oargs);
306			}
307			memset(o, 0, sizeof(OBJREC));
308	greg	2.8	}
309			/* free objects off end */
310			for (obj = nobjects; obj-- > 0; )
311			if (objptr(obj)->oname != NULL)
312			break;
313	greg	2.24	if (++obj >= nobjects)
314			return;
315	greg	2.8	while (nobjects > obj) /* free empty end blocks */
316			if ((--nobjects & (OBJBLKSIZ-1)) == 0) {
317			int i = nobjects >> OBJBLKSHFT;
318	greg	2.30	/* consolidated block? */
319			if (OBJMEMOPT && objblock[i][OBJBLKSIZ].otype < 0) {
320			free(objblock[i][OBJBLKSIZ].oname);
321			freefargs(&objblock[i][OBJBLKSIZ].oargs);
322			}
323			free(objblock[i]);
324	greg	2.8	objblock[i] = NULL;
325			}
326	greg	2.24	truncobjndx(); /* truncate modifier look-up */
327	greg	1.1	}