WebSVN – tendra.SVN – Diff – /branches/tendra5/src/producers/common/utility/xalloc.c

+/*
+ * Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
+ * 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. Neither the name of The TenDRA Project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific, prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ * IS'' AND ANY EXPRESS 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 THE COPYRIGHT HOLDERS OR
+ * 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.
+ *
+ * $Id$
+ */
 /*
     		 Crown Copyright (c) 1997
     This TenDRA(r) Computer Program is subject to Copyright
     owned by the United Kingdom Secretary of State for Defence
     acting through the Defence Evaluation and Research Agency
     (DERA).  It is made available to Recipients with a
     royalty-free licence for its use, reproduction, transfer
     to other parties and amendment for any purpose not excluding
     product development provided that any such use et cetera
     shall be deemed to be acceptance of the following conditions:-
         (1) Its Recipients shall ensure that this Notice is
         reproduced upon any copies or amended versions of it;
         (2) Any amended version of it shall be clearly marked to
         show both the nature of and the organisation responsible
         for the relevant amendment or amendments;
         (3) Its onward transfer from a recipient to another
         party shall be deemed to be that party's acceptance of
         these conditions;
         (4) DERA gives no warranty or assurance as to its
         quality or suitability for any purpose and DERA accepts
         no liability whatsoever in relation to any use to which
         it may be put.
 */
     All the program's memory allocation is through the routines defined in
     this file.  This routine allocates sz bytes of memory.
 */
-gen_ptr xmalloc
+gen_ptr
-    PROTO_N ( ( sz ) )
-    PROTO_T ( gen_size sz )
+xmalloc(gen_size sz)
+{
-    gen_ptr p ;
+	gen_ptr p;
-    if ( sz == 0 ) sz = 1 ;
+	if (sz == 0) {
+		sz = 1;
+	}
-    p = malloc ( ( size_t ) sz ) ;
+	p = malloc((size_t)sz);
-    if ( p == NULL ) {
+	if (p == NULL) {
-	max_errors = ULONG_MAX ;
+		max_errors = ULONG_MAX;
-	error ( ERROR_INTERNAL, "Memory allocation error" ) ;
+		error(ERROR_INTERNAL, "Memory allocation error");
-	term_error ( 1 ) ;
+		term_error(1);
-    }
+	}
-    return ( p ) ;
+	return (p);
 }
 /*
     CONTROLLED VERSION OF REALLOC
     This routine reallocates the block of memory p to contain sz bytes.
     p can be the result of a previous memory allocation routine, or NULL.
 */
-gen_ptr xrealloc
+gen_ptr
-    PROTO_N ( ( p, sz ) )
-    PROTO_T ( gen_ptr p X gen_size sz )
+xrealloc(gen_ptr p, gen_size sz)
 {
-    gen_ptr q ;
+	gen_ptr q;
-    if ( sz == 0 ) sz = 1 ;
+	if (sz == 0) {
+		sz = 1;
+	}
-    if ( p ) {
+	if (p) {
-	q = realloc ( p, ( size_t ) sz ) ;
+		q = realloc(p,(size_t)sz);
-    } else {
+	} else {
-	q = malloc ( ( size_t ) sz ) ;
+		q = malloc((size_t)sz);
-    }
+	}
-    if ( q == NULL ) {
+	if (q == NULL) {
-	max_errors = ULONG_MAX ;
+		max_errors = ULONG_MAX;
-	error ( ERROR_INTERNAL, "Memory allocation error" ) ;
+		error(ERROR_INTERNAL, "Memory allocation error");
-	term_error ( 1 ) ;
+		term_error(1);
-    }
+	}
-    return ( q ) ;
+	return (q);
 }
 /*
     CONTROLLED VERSION OF FREE
     This routine frees the block of memory p.  p can be the result of a
     previous memory allocation routine, or NULL.
 */
-void xfree
+void
-    PROTO_N ( ( p ) )
-    PROTO_T ( gen_ptr p )
+xfree(gen_ptr p)
+{
+	if (p) {
-    if ( p ) free ( p ) ;
+		free(p);
+	}
-    return ;
+	return;
+}
 /*
     STRING ALLOCATION BUFFER
     This buffer is used in the allocation of small strings.
 */
-static gen_size chars_left = 0 ;
+static gen_size chars_left = 0;
-static string chars_free = NULL ;
+static string chars_free = NULL;
 /*
     ALLOCATE SPACE FOR A STRING
     This routine allocates space for n characters.  The memory allocation
     is buffered except for very long strings.
 */
-string xustr
+string
-    PROTO_N ( ( n ) )
-    PROTO_T ( gen_size n )
+xustr(gen_size n)
+{
-    string r ;
+	string r;
-    if ( n < 1000 ) {
+	if (n < 1000) {
-	/* Small strings */
+		/* Small strings */
-	if ( n >= chars_left ) {
+		if (n >= chars_left) {
-	    chars_left = 5000 ;
+			chars_left = 5000;
-	    chars_free = xmalloc_nof ( character, chars_left ) ;
+			chars_free = xmalloc_nof(character, chars_left);
+		}
+		r = chars_free;
+		chars_free += n;
+		chars_left -= n;
+	} else {
+		/* Large strings */
+		r = xmalloc_nof(character, n);
+	}
-	r = chars_free ;
-	chars_free += n ;
-	chars_left -= n ;
-    } else {
-	/* Large strings */
-	r = xmalloc_nof ( character, n ) ;
-    }
-    return ( r ) ;
+	return (r);
+}
 /*
     FREE SPACE ALLOCATED FOR A STRING
     This routine frees the space allocated by a previous call to xustr.
     For small strings the memory is only freed for the last call to xustr.
 */
-void xufree
-    PROTO_N ( ( s, n ) )
-    PROTO_T ( string s X gen_size n )
-{
-    if ( s ) {
-	if ( n < 1000 ) {
-	    /* Small strings */
-	    if ( s + n == chars_free ) {
-		chars_free = s ;
-		chars_left += n ;
-	    }
-	} else {
-	    /* Large strings */
-	    xfree_nof ( s ) ;
-	}
-    }
-    return ;
-}
-/*
-    COPY A STRING OF A GIVEN LENGTH
-    This routine allocates space for a persistent copy of the string s
-    of length n.  There is only one copy of each small string, otherwise
-    xustr is used to allocate the space.
-*/
+void
-string xustrncpy
-    PROTO_N ( ( s, n ) )
-    PROTO_T ( string s X gen_size n )
+xufree(string s, gen_size n)
+{
-    string r ;
+	if (s) {
-    if ( n < 2 ) {
+		if (n < 1000) {
-	/* Small strings */
+			/* Small strings */
-	static character buff [ NO_CHAR ] [2] ;
+			if (s + n == chars_free) {
-	int c = ( int ) s [0] ;
+				chars_free = s;
-	if ( c < NO_CHAR ) {
+				chars_left += n;
+			}
-	    r = buff [c] ;
+		} else {
-	    r [0] = ( character ) c ;
+			/* Large strings */
-	    r [1] = 0 ;
+			xfree_nof(s);
-	    return ( r ) ;
+		}
+	}
-    }
-    /* Large strings */
-    r = xustr ( n + 1 ) ;
-    ustrcpy_v ( r, s ) ;
-    return ( r ) ;
+	return;
+}
 /*
+    COPY A STRING OF A GIVEN LENGTH
+    This routine allocates space for a persistent copy of the string s
+    of length n.  There is only one copy of each small string, otherwise
+    xustr is used to allocate the space.
+*/
+string
+xustrncpy(string s, gen_size n)
+{
+	string r;
+	if (n < 2) {
+		/* Small strings */
+		static character buff[NO_CHAR][2];
+		int c = (int)s[0];
+		if (c < NO_CHAR) {
+			r = buff[c];
+			r[0] = (character)c;
+			r[1] = 0;
+			return (r);
+		}
+	}
+	/* Large strings */
+	r = xustr(n + 1);
+	ustrcpy_v(r, s);
+	return (r);
+}
+/*
     COPY A STRING
     This routine allocates space for a persistent copy of the string s.
 */
-string xustrcpy
+string
-    PROTO_N ( ( s ) )
-    PROTO_T ( string s )
+xustrcpy(string s)
+{
-    gen_size n ;
+	gen_size n;
-    if ( s == NULL ) return ( NULL ) ;
+	if (s == NULL) {
+		return (NULL);
+	}
-    n = ( gen_size ) ustrlen ( s ) ;
+	n = (gen_size)ustrlen(s);
-    return ( xustrncpy ( s, n ) ) ;
+	return (xustrncpy(s, n));
+}
 /*
     CONCATENATE TWO STRINGS
     This routine allocates space for a persistent copy of the string s
     followed by the string t.  The memory is allocated using xustr.
 */
-string xustrcat
+string
-    PROTO_N ( ( s, t ) )
-    PROTO_T ( string s X string t )
+xustrcat(string s, string t)
 {
-    string r ;
+	string r;
-    gen_size n, m ;
+	gen_size n, m;
+	if (s == NULL) {
-    if ( s == NULL ) return ( xustrcpy ( t ) ) ;
+		return (xustrcpy(t));
+	}
+	if (t == NULL) {
-    if ( t == NULL ) return ( xustrcpy ( s ) ) ;
+		return (xustrcpy(s));
+	}
-    n = ( gen_size ) ustrlen ( s ) ;
+	n = (gen_size)ustrlen(s);
-    m = n + ( gen_size ) ustrlen ( t ) + 1 ;
+	m = n + (gen_size)ustrlen(t) + 1;
-    r = xustr ( m ) ;
+	r = xustr(m);
-    ustrcpy_v ( r, s ) ;
+	ustrcpy_v(r, s);
-    ustrcpy_v ( r + n, t ) ;
+	ustrcpy_v(r + n, t);
-    return ( r ) ;
+	return (r);
 }
 /*
     COPY A NUMBER OF CHARACTERS
     This routine copies n characters from t to s.
 */
-void xumemcpy
+void
-    PROTO_N ( ( s, t, n ) )
-    PROTO_T ( string s X string t X gen_size n )
+xumemcpy(string s, string t, gen_size n)
 {
+	if (n) {
-    if ( n ) memcpy_v ( ( gen_ptr ) s, ( gen_ptr ) t, ( size_t ) n ) ;
+		memcpy_v((gen_ptr)s, (gen_ptr)t, (size_t)n);
+	}
-    return ;
+	return;
 }
 /*
     COMPARE TWO SEQUENCES OF CHARACTERS
     This routine compares the n characters given by s and t.
 */
-int xumemcmp
+int
-    PROTO_N ( ( s, t, n ) )
-    PROTO_T ( string s X string t X gen_size n )
+xumemcmp(string s, string t, gen_size n)
+{
-    if ( s == t || n == 0 ) return ( 0 ) ;
+	if (s == t || n == 0) {
+		return (0);
+	}
-    return ( memcmp ( ( gen_ptr ) s, ( gen_ptr ) t, ( size_t ) n ) ) ;
+	return (memcmp((gen_ptr)s,(gen_ptr)t,(size_t)n));
+}

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(root)/branches/tendra5/src/producers/common/utility/xalloc.c – Rev 5 → 6