src/common/savqstr.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 *  Save unshared strings.
 *
 *  External symbols declared in standard.h
 */

/* ====================================================================
 * The Radiance Software License, Version 1.0
 *
 * Copyright (c) 1990 - 2002 The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory.   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *         notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *           if any, must include the following acknowledgment:
 *             "This product includes Radiance software
 *                 (http://radsite.lbl.gov/)
 *                 developed by the Lawrence Berkeley National Laboratory
 *               (http://www.lbl.gov/)."
 *       Alternately, this acknowledgment may appear in the software itself,
 *       if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
 *       and "The Regents of the University of California" must
 *       not be used to endorse or promote products derived from this
 *       software without prior written permission. For written
 *       permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Radiance",
 *       nor may "Radiance" appear in their name, without prior written
 *       permission of Lawrence Berkeley National Laboratory.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
 * information on Lawrence Berkeley National Laboratory, please see
 * <http://www.lbl.gov/>.
 */

#include <stdlib.h>

extern void     eputs();
extern void     quit();

#if 1

char *
savqstr(s)                      /* save a private string */
register char  *s;
{
        register char  *cp;
        char  *newp;

        for (cp = s; *cp++; )                   /* compute strlen()+1 */
                ;
        newp = (char *)malloc(cp-s);
        if (newp == NULL) {
                eputs("out of memory in savqstr");
                quit(1);
        }
        for (cp = newp; *cp++ = *s++; )         /* inline strcpy() */
                ;
        return(newp);                           /* return new location */
}


void
freeqstr(s)                     /* free a private string */
char  *s;
{
        free((void *)s);
}

#else

/*
 *  Save unshared strings, packing them together into
 *  large blocks to optimize paging in VM environments.
 */

#ifdef  BIGMEM
#ifndef  MINBLOCK
#define  MINBLOCK       (1<<12)         /* minimum allocation block size */
#endif
#ifndef  MAXBLOCK
#define  MAXBLOCK       (1<<16)         /* maximum allocation block size */
#endif
#else
#ifndef  MINBLOCK
#define  MINBLOCK       (1<<10)         /* minimum allocation block size */
#endif
#ifndef  MAXBLOCK
#define  MAXBLOCK       (1<<14)         /* maximum allocation block size */
#endif
#endif

extern char  *bmalloc();


char *
savqstr(s)                      /* save a private string */
register char  *s;
{
        static char  *curp = NULL;              /* allocated memory pointer */
        static unsigned  nrem = 0;              /* bytes remaining in block */
        static unsigned  nextalloc = MINBLOCK;  /* next block size */
        register char  *cp;
        register unsigned  n;

        for (cp = s; *cp++; )                   /* compute strlen()+1 */
                ;
        if ((n = cp-s) > nrem) {                /* do we need more core? */
                bfree(curp, nrem);                      /* free remnant */
                while (n > nextalloc)
                        nextalloc <<= 1;
                if ((curp = bmalloc(nrem=nextalloc)) == NULL) {
                        eputs("out of memory in savqstr");
                        quit(1);
                }
                if ((nextalloc <<= 1) > MAXBLOCK)       /* double block size */
                        nextalloc = MAXBLOCK;
        }
        for (cp = curp; *cp++ = *s++; )         /* inline strcpy() */
                ;
        s = curp;                               /* update allocation info. */
        curp = cp;
        nrem -= n;
        return(s);                              /* return new location */
}


void
freeqstr(s)                     /* free a private string (not recommended) */
char  *s;
{
        bfree(s, strlen(s)+1);
}

#endif
Revision:	2.3
Committed:	Sat Feb 22 02:07:22 2003 UTC (22 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.2:	+102 -5 lines
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.3	static const char RCSid[] = "$Id$";
3	greg	1.1	#endif
4	greg	2.3	/*
5			* Save unshared strings.
6			*
7			* External symbols declared in standard.h
8			*/
9
10			/* ====================================================================
11			* The Radiance Software License, Version 1.0
12			*
13			* Copyright (c) 1990 - 2002 The Regents of the University of California,
14			* through Lawrence Berkeley National Laboratory. All rights reserved.
15			*
16			* Redistribution and use in source and binary forms, with or without
17			* modification, are permitted provided that the following conditions
18			* are met:
19			*
20			* 1. Redistributions of source code must retain the above copyright
21			* notice, this list of conditions and the following disclaimer.
22			*
23			* 2. Redistributions in binary form must reproduce the above copyright
24			* notice, this list of conditions and the following disclaimer in
25			* the documentation and/or other materials provided with the
26			* distribution.
27			*
28			* 3. The end-user documentation included with the redistribution,
29			* if any, must include the following acknowledgment:
30			* "This product includes Radiance software
31			* (http://radsite.lbl.gov/)
32			* developed by the Lawrence Berkeley National Laboratory
33			* (http://www.lbl.gov/)."
34			* Alternately, this acknowledgment may appear in the software itself,
35			* if and wherever such third-party acknowledgments normally appear.
36			*
37			* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
38			* and "The Regents of the University of California" must
39			* not be used to endorse or promote products derived from this
40			* software without prior written permission. For written
41			* permission, please contact [email protected].
42			*
43			* 5. Products derived from this software may not be called "Radiance",
44			* nor may "Radiance" appear in their name, without prior written
45			* permission of Lawrence Berkeley National Laboratory.
46			*
47			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
48			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
50			* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
51			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53			* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
54			* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
55			* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
56			* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
57			* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58			* SUCH DAMAGE.
59			* ====================================================================
60			*
61			* This software consists of voluntary contributions made by many
62			* individuals on behalf of Lawrence Berkeley National Laboratory. For more
63			* information on Lawrence Berkeley National Laboratory, please see
64			* <http://www.lbl.gov/>.
65			*/
66
67			#include <stdlib.h>
68
69			extern void eputs();
70			extern void quit();
71
72			#if 1
73
74			char *
75			savqstr(s) /* save a private string */
76			register char *s;
77			{
78			register char *cp;
79			char *newp;
80
81			for (cp = s; cp++; ) / compute strlen()+1 */
82			;
83			newp = (char *)malloc(cp-s);
84			if (newp == NULL) {
85			eputs("out of memory in savqstr");
86			quit(1);
87			}
88			for (cp = newp; cp++ = s++; ) /* inline strcpy() */
89			;
90			return(newp); /* return new location */
91			}
92
93
94			void
95			freeqstr(s) /* free a private string */
96			char *s;
97			{
98			free((void *)s);
99			}
100
101			#else
102	greg	1.1
103			/*
104	greg	2.2	* Save unshared strings, packing them together into
105			* large blocks to optimize paging in VM environments.
106	greg	1.1	*/
107
108	greg	2.2	#ifdef BIGMEM
109			#ifndef MINBLOCK
110			#define MINBLOCK (1<<12) /* minimum allocation block size */
111			#endif
112			#ifndef MAXBLOCK
113			#define MAXBLOCK (1<<16) /* maximum allocation block size */
114			#endif
115			#else
116			#ifndef MINBLOCK
117			#define MINBLOCK (1<<10) /* minimum allocation block size */
118			#endif
119			#ifndef MAXBLOCK
120			#define MAXBLOCK (1<<14) /* maximum allocation block size */
121			#endif
122			#endif
123	greg	1.1
124	greg	2.2	extern char *bmalloc();
125	greg	1.1
126	greg	2.2
127	greg	1.1	char *
128			savqstr(s) /* save a private string */
129	greg	2.2	register char *s;
130	greg	1.1	{
131	greg	2.2	static char curp = NULL; / allocated memory pointer */
132			static unsigned nrem = 0; /* bytes remaining in block */
133			static unsigned nextalloc = MINBLOCK; /* next block size */
134	greg	1.1	register char *cp;
135	greg	2.2	register unsigned n;
136	greg	1.1
137	greg	2.2	for (cp = s; cp++; ) / compute strlen()+1 */
138			;
139			if ((n = cp-s) > nrem) { /* do we need more core? */
140			bfree(curp, nrem); /* free remnant */
141			while (n > nextalloc)
142			nextalloc <<= 1;
143			if ((curp = bmalloc(nrem=nextalloc)) == NULL) {
144			eputs("out of memory in savqstr");
145			quit(1);
146			}
147			if ((nextalloc <<= 1) > MAXBLOCK) /* double block size */
148			nextalloc = MAXBLOCK;
149	greg	1.1	}
150	greg	2.2	for (cp = curp; cp++ = s++; ) /* inline strcpy() */
151			;
152			s = curp; /* update allocation info. */
153			curp = cp;
154			nrem -= n;
155			return(s); /* return new location */
156	greg	1.1	}
157
158
159	greg	2.3	void
160	greg	2.2	freeqstr(s) /* free a private string (not recommended) */
161	greg	1.1	char *s;
162			{
163			bfree(s, strlen(s)+1);
164			}
165	greg	2.3
166			#endif