GDB (xrefs)

/tmp/gdb-8.1/gdb/gdb_obstack.h
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1 /* Obstack wrapper for GDB.
2
3 Copyright (C) 2002-2018 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20 #if !defined (GDB_OBSTACK_H)
21 #define GDB_OBSTACK_H 1
22
23 #include "obstack.h"
24
25 /* Utility macros - wrap obstack alloc into something more robust. */
26
27 #define OBSTACK_ZALLOC(OBSTACK,TYPE) \
28 ((TYPE *) memset (obstack_alloc ((OBSTACK), sizeof (TYPE)), 0, sizeof (TYPE)))
29
30 #define OBSTACK_CALLOC(OBSTACK,NUMBER,TYPE) \
31 ((TYPE *) memset (obstack_alloc ((OBSTACK), (NUMBER) * sizeof (TYPE)), \
32 0, (NUMBER) * sizeof (TYPE)))
33
34 /* Unless explicitly specified, GDB obstacks always use xmalloc() and
35 xfree(). */
36 /* Note: ezannoni 2004-02-09: One could also specify the allocation
37 functions using a special init function for each obstack,
38 obstack_specify_allocation. However we just use obstack_init and
39 let these defines here do the job. While one could argue the
40 superiority of one approach over the other, we just chose one
41 throughout. */
42
43 #define obstack_chunk_alloc xmalloc
44 #define obstack_chunk_free xfree
45
46 #define obstack_grow_str(OBSTACK,STRING) \
47 obstack_grow (OBSTACK, STRING, strlen (STRING))
48 #define obstack_grow_str0(OBSTACK,STRING) \
49 obstack_grow0 (OBSTACK, STRING, strlen (STRING))
50
51 #define obstack_grow_wstr(OBSTACK, WSTRING) \
52 obstack_grow (OBSTACK, WSTRING, sizeof (gdb_wchar_t) * gdb_wcslen (WSTRING))
53
54 /* Concatenate NULL terminated variable argument list of `const char
55 *' strings; return the new string. Space is found in the OBSTACKP.
56 Argument list must be terminated by a sentinel expression `(char *)
57 NULL'. */
58
59 extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL;
60
61 /* Duplicate STRING, returning an equivalent string that's allocated on the
62 obstack OBSTACKP. */
63
64 extern char *obstack_strdup (struct obstack *obstackp, const char *string);
65
66 /* An obstack that frees itself on scope exit. */
67 struct auto_obstack : obstack
68 {
69 auto_obstack ()
70 { obstack_init (this); }
71
72 ~auto_obstack ()
73 { obstack_free (this, NULL); }
74
75 /* Free all memory in the obstack but leave it valid for further
76 allocation. */
77 void clear ()
78 { obstack_free (this, obstack_base (this)); }
79 };
80
81 #endif
auto_obstack::~auto_obstack
~auto_obstack()
Definition: gdb_obstack.h:72
obconcat
char * obconcat(struct obstack *obstackp,...) ATTRIBUTE_SENTINEL
Definition: gdb_obstack.c:29
obstack_strdup
char * obstack_strdup(struct obstack *obstackp, const char *string)
Definition: gdb_obstack.c:52
auto_obstack
Definition: gdb_obstack.h:67
auto_obstack::clear
void clear()
Definition: gdb_obstack.h:77
auto_obstack::auto_obstack
auto_obstack()
Definition: gdb_obstack.h:69