4 Unix SMB/CIFS implementation.
5 Samba temporary memory allocation functions
7 Copyright (C) Andrew Tridgell 2004-2005
8 Copyright (C) Stefan Metzmacher 2006
10 ** NOTE! The following LGPL license applies to the talloc
11 ** library. This does NOT imply that all of Samba is released
14 This library is free software; you can redistribute it and/or
15 modify it under the terms of the GNU Lesser General Public
16 License as published by the Free Software Foundation; either
17 version 2 of the License, or (at your option) any later version.
19 This library is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 Lesser General Public License for more details.
24 You should have received a copy of the GNU Lesser General Public
25 License along with this library; if not, write to the Free Software
26 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 /* this is only needed for compatibility with the old talloc */
30 typedef void TALLOC_CTX;
33 this uses a little trick to allow __LINE__ to be stringified
35 #define _STRING_LINE_(s) #s
36 #define _STRING_LINE2_(s) _STRING_LINE_(s)
37 #define __LINESTR__ _STRING_LINE2_(__LINE__)
38 #define __location__ __FILE__ ":" __LINESTR__
40 #ifndef TALLOC_DEPRECATED
41 #define TALLOC_DEPRECATED 0
44 #ifndef PRINTF_ATTRIBUTE
46 /** Use gcc attribute to check printf fns. a1 is the 1-based index of
47 * the parameter containing the format, and a2 the index of the first
48 * argument. Note that some gcc 2.x versions don't handle this
50 #define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
52 #define PRINTF_ATTRIBUTE(a1, a2)
56 /* try to make talloc_set_destructor() and talloc_steal() type safe,
57 if we have a recent gcc */
59 #define _TALLOC_TYPEOF(ptr) __typeof__(ptr)
60 #define talloc_set_destructor(ptr, function) \
62 int (*_talloc_destructor_fn)(_TALLOC_TYPEOF(ptr)) = (function); \
63 _talloc_set_destructor((ptr), (int (*)(void *))_talloc_destructor_fn); \
65 /* this extremely strange macro is to avoid some braindamaged warning
66 stupidity in gcc 4.1.x */
67 #define talloc_steal(ctx, ptr) ({ _TALLOC_TYPEOF(ptr) __talloc_steal_ret = (_TALLOC_TYPEOF(ptr))_talloc_steal((ctx),(ptr)); __talloc_steal_ret; })
68 #define talloc_reference(ctx, ptr) (_TALLOC_TYPEOF(ptr))_talloc_reference((ctx),(ptr))
70 #define talloc_set_destructor(ptr, function) \
71 _talloc_set_destructor((ptr), (int (*)(void *))(function))
72 #define _TALLOC_TYPEOF(ptr) void *
73 #define talloc_steal(ctx, ptr) (_TALLOC_TYPEOF(ptr))_talloc_steal((ctx),(ptr))
74 #define talloc_reference(ctx, ptr) (_TALLOC_TYPEOF(ptr))_talloc_reference((ctx),(ptr))
77 /* useful macros for creating type checked pointers */
78 #define talloc(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
79 #define talloc_size(ctx, size) talloc_named_const(ctx, size, __location__)
80 #define talloc_ptrtype(ctx, ptr) (_TALLOC_TYPEOF(ptr))talloc_size(ctx, sizeof(*(ptr)))
82 #define talloc_new(ctx) talloc_named_const(ctx, 0, "talloc_new: " __location__)
84 #define talloc_zero(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
85 #define talloc_zero_size(ctx, size) _talloc_zero(ctx, size, __location__)
87 #define talloc_zero_array(ctx, type, count) (type *)_talloc_zero_array(ctx, sizeof(type), count, #type)
88 #define talloc_array(ctx, type, count) (type *)_talloc_array(ctx, sizeof(type), count, #type)
89 #define talloc_array_size(ctx, size, count) _talloc_array(ctx, size, count, __location__)
90 #define talloc_array_ptrtype(ctx, ptr, count) (_TALLOC_TYPEOF(ptr))talloc_array_size(ctx, sizeof(*(ptr)), count)
92 #define talloc_realloc(ctx, p, type, count) (type *)_talloc_realloc_array(ctx, p, sizeof(type), count, #type)
93 #define talloc_realloc_size(ctx, ptr, size) _talloc_realloc(ctx, ptr, size, __location__)
95 #define talloc_memdup(t, p, size) _talloc_memdup(t, p, size, __location__)
97 #define talloc_set_type(ptr, type) talloc_set_name_const(ptr, #type)
98 #define talloc_get_type(ptr, type) (type *)talloc_check_name(ptr, #type)
100 #define talloc_find_parent_bytype(ptr, type) (type *)talloc_find_parent_byname(ptr, #type)
102 #if TALLOC_DEPRECATED
103 #define talloc_zero_p(ctx, type) talloc_zero(ctx, type)
104 #define talloc_p(ctx, type) talloc(ctx, type)
105 #define talloc_array_p(ctx, type, count) talloc_array(ctx, type, count)
106 #define talloc_realloc_p(ctx, p, type, count) talloc_realloc(ctx, p, type, count)
107 #define talloc_destroy(ctx) talloc_free(ctx)
110 /* The following definitions come from talloc.c */
111 void *_talloc(const void *context, size_t size);
112 void _talloc_set_destructor(const void *ptr, int (*destructor)(void *));
113 int talloc_increase_ref_count(const void *ptr);
114 size_t talloc_reference_count(const void *ptr);
115 void *_talloc_reference(const void *context, const void *ptr);
116 int talloc_unlink(const void *context, void *ptr);
117 const char *talloc_set_name(const void *ptr, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
118 void talloc_set_name_const(const void *ptr, const char *name);
119 void *talloc_named(const void *context, size_t size,
120 const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
121 void *talloc_named_const(const void *context, size_t size, const char *name);
122 const char *talloc_get_name(const void *ptr);
123 void *talloc_check_name(const void *ptr, const char *name);
124 void *talloc_parent(const void *ptr);
125 void *talloc_init(const char *fmt, ...) PRINTF_ATTRIBUTE(1,2);
126 int talloc_free(void *ptr);
127 void talloc_free_children(void *ptr);
128 void *_talloc_realloc(const void *context, void *ptr, size_t size, const char *name);
129 void *_talloc_steal(const void *new_ctx, const void *ptr);
130 size_t talloc_total_size(const void *ptr);
131 size_t talloc_total_blocks(const void *ptr);
132 void talloc_report_depth_cb(const void *ptr, int depth, int max_depth,
133 void (*callback)(const void *ptr,
134 int depth, int max_depth,
138 void talloc_report_depth_file(const void *ptr, int depth, int max_depth, FILE *f);
139 void talloc_report_full(const void *ptr, FILE *f);
140 void talloc_report(const void *ptr, FILE *f);
141 void talloc_enable_null_tracking(void);
142 void talloc_disable_null_tracking(void);
143 void talloc_enable_leak_report(void);
144 void talloc_enable_leak_report_full(void);
145 void *_talloc_zero(const void *ctx, size_t size, const char *name);
146 void *_talloc_memdup(const void *t, const void *p, size_t size, const char *name);
147 char *talloc_strdup(const void *t, const char *p);
148 char *talloc_strndup(const void *t, const char *p, size_t n);
149 char *talloc_append_string(const void *t, char *orig, const char *append);
150 char *talloc_vasprintf(const void *t, const char *fmt, va_list ap) PRINTF_ATTRIBUTE(2,0);
151 char *talloc_vasprintf_append(char *s, const char *fmt, va_list ap) PRINTF_ATTRIBUTE(2,0);
152 char *talloc_asprintf(const void *t, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
153 char *talloc_asprintf_append(char *s, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
154 void *_talloc_array(const void *ctx, size_t el_size, unsigned count, const char *name);
155 void *_talloc_zero_array(const void *ctx, size_t el_size, unsigned count, const char *name);
156 void *_talloc_realloc_array(const void *ctx, void *ptr, size_t el_size, unsigned count, const char *name);
157 void *talloc_realloc_fn(const void *context, void *ptr, size_t size);
158 void *talloc_autofree_context(void);
159 size_t talloc_get_size(const void *ctx);
160 void *talloc_find_parent_byname(const void *ctx, const char *name);
161 void talloc_show_parents(const void *context, FILE *file);
162 int talloc_is_parent(const void *context, const void *ptr);