2 * Include file with general macros and typedefs used through Captive project
3 * Copyright (C) 2002 Jan Kratochvil <project-captive@jankratochvil.net>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; exactly version 2 of June 1991 is required
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #ifndef _CAPTIVE_MACROS_H
21 #define _CAPTIVE_MACROS_H 1
24 #include <glib/gmacros.h>
25 #include <glib/gmem.h>
27 #include <string.h> /* for memset() */
35 * Prevent 'might be used uninitialized' warning.
36 * Macro will fakes the use of the variable as sometimes GCC can't code flow
37 * analyse #C correctly.
41 * g_some_type some_variable CAPTIVE_FAKEUSE;
45 #define CAPTIVE_FAKEUSE =0
50 * @objp: Variable with the pointer to the objects wished to be allocated.
51 * Original value is discarded.
52 * @n: Numbers of objects to be allocated. Value %0 is permitted (g_free() effect).
54 * Macto to allocate @n objects of type *@objp and to assign the resulting pointer to @objp.
55 * Allocated memory may contain garbage.
57 * @Returns: Initialized @objp value as the memory of size #sizeof(typeof(*objp))*n.
59 #define captive_newn(objp,n) ((objp)=g_new(typeof(*(objp)),(n)))
64 * @objp: Variable with the pointer to the objects wished to be allocated and precleared.
65 * Original value is discarded.
66 * @n: Numbers of objects to be allocated. Value %0 is permitted (g_free() effect).
68 * Macro to allocate @n objects of type *@objp and to assign the resulting pointer to @objp.
69 * Allocated memory is precleared.
71 * @Returns: Initialized @objp value as the cleared memory of size #sizeof(typeof(*objp))*n.
73 #define captive_new0n(objp,n) ((objp)=g_new0(typeof(*(objp)),(n)))
78 * @objp: Variable with the pointer to the objects wished to be reallocated.
79 * Value %NULL is permitted (g_malloc() effect).
80 * @n: Numbers of objects to be allocated. Value %0 is permitted (g_free() effect).
82 * Macro to reallocate the original memory stored in @objp
83 * to the size @n objects of type *@objp and to assign the resulting pointer to @objp.
84 * New allocated space may contain garbage. Both @objp and @n can be nonexclusively
87 * @Returns: Initialized @objp value as the memory of size #sizeof(typeof(*objp))*n.
89 #define captive_renewn(objp,n) ((objp)=g_renew(typeof(*(objp)),(objp),(n)))
94 * @objp: Variable with the pointer to the object wished to be allocated.
95 * Original value is discarded.
97 * Macto to allocate one object of type *@objp and to assign the resulting pointer to @objp.
98 * Allocated memory may contain garbage. Equivalent to captive_newn(objp,1) call.
100 * @Returns: Initialized @objp value as the memory of size #sizeof(typeof(*objp)).
102 #define captive_new(objp) (captive_newn((objp),1))
107 * @objp: Variable with the pointer to the object wished to be allocated and precleared.
108 * Original value is discarded.
110 * Macro to allocate one object of type *@objp and to assign the resulting pointer to @objp.
111 * Allocated memory is precleared. Equivalent to captive_new0n(objp,1) call.
113 * @Returns: Initialized @objp value as the cleared memory of size #sizeof(typeof(*objp)).
115 #define captive_new0(objp) (captive_new0n((objp),1))
120 * @objp: Variable to be filled from the next argument of @ap.
121 * @ap: Initialized #va_list type.
123 * Automatically determines the size of @objp.
124 * Equivalent to objp=va_arg(ap,typeof(objp)) call.
126 * @Returns: Initialized @objp value.
128 #define captive_va_arg(objp,ap) ((objp)=va_arg((ap),typeof(objp)))
133 * @objp: Pointer to the variable to be cleared.
135 * Clears the sizeof(*@objp) bytes of the given pointer with memset().
136 * Pass _pointer_ to the object to be cleared.
138 #define CAPTIVE_MEMZERO(objp) (memset((objp),0,sizeof(*(objp))))
143 #endif /* _CAPTIVE_MACROS_H */