Commit | Line | Data |
---|---|---|
d26e3629 KY |
1 | /* Shared general utility routines for GDB, the GNU debugger. |
2 | ||
28e7fd62 | 3 | Copyright (C) 1986-2013 Free Software Foundation, Inc. |
d26e3629 KY |
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 | #ifdef GDBSERVER | |
21 | #include "server.h" | |
22 | #else | |
23 | #include "defs.h" | |
24 | #endif | |
25 | ||
26 | #include "gdb_assert.h" | |
baea0dae | 27 | #include "gdb_string.h" |
d26e3629 KY |
28 | |
29 | #include <stdlib.h> | |
30 | #include <stdio.h> | |
31 | ||
32 | /* The xmalloc() (libiberty.h) family of memory management routines. | |
33 | ||
34 | These are like the ISO-C malloc() family except that they implement | |
35 | consistent semantics and guard against typical memory management | |
36 | problems. */ | |
37 | ||
38 | /* NOTE: These are declared using PTR to ensure consistency with | |
39 | "libiberty.h". xfree() is GDB local. */ | |
40 | ||
41 | PTR /* ARI: PTR */ | |
42 | xmalloc (size_t size) | |
43 | { | |
44 | void *val; | |
45 | ||
46 | /* See libiberty/xmalloc.c. This function need's to match that's | |
47 | semantics. It never returns NULL. */ | |
48 | if (size == 0) | |
49 | size = 1; | |
50 | ||
51 | val = malloc (size); /* ARI: malloc */ | |
52 | if (val == NULL) | |
53 | malloc_failure (size); | |
54 | ||
55 | return val; | |
56 | } | |
57 | ||
58 | PTR /* ARI: PTR */ | |
59 | xrealloc (PTR ptr, size_t size) /* ARI: PTR */ | |
60 | { | |
61 | void *val; | |
62 | ||
63 | /* See libiberty/xmalloc.c. This function need's to match that's | |
64 | semantics. It never returns NULL. */ | |
65 | if (size == 0) | |
66 | size = 1; | |
67 | ||
68 | if (ptr != NULL) | |
69 | val = realloc (ptr, size); /* ARI: realloc */ | |
70 | else | |
71 | val = malloc (size); /* ARI: malloc */ | |
72 | if (val == NULL) | |
73 | malloc_failure (size); | |
74 | ||
75 | return val; | |
76 | } | |
77 | ||
78 | PTR /* ARI: PTR */ | |
79 | xcalloc (size_t number, size_t size) | |
80 | { | |
81 | void *mem; | |
82 | ||
83 | /* See libiberty/xmalloc.c. This function need's to match that's | |
84 | semantics. It never returns NULL. */ | |
85 | if (number == 0 || size == 0) | |
86 | { | |
87 | number = 1; | |
88 | size = 1; | |
89 | } | |
90 | ||
91 | mem = calloc (number, size); /* ARI: xcalloc */ | |
92 | if (mem == NULL) | |
93 | malloc_failure (number * size); | |
94 | ||
95 | return mem; | |
96 | } | |
97 | ||
98 | void * | |
99 | xzalloc (size_t size) | |
100 | { | |
101 | return xcalloc (1, size); | |
102 | } | |
103 | ||
104 | void | |
105 | xfree (void *ptr) | |
106 | { | |
107 | if (ptr != NULL) | |
108 | free (ptr); /* ARI: free */ | |
109 | } | |
110 | ||
111 | /* Like asprintf/vasprintf but get an internal_error if the call | |
112 | fails. */ | |
113 | ||
114 | char * | |
115 | xstrprintf (const char *format, ...) | |
116 | { | |
117 | char *ret; | |
118 | va_list args; | |
119 | ||
120 | va_start (args, format); | |
121 | ret = xstrvprintf (format, args); | |
122 | va_end (args); | |
123 | return ret; | |
124 | } | |
125 | ||
126 | char * | |
127 | xstrvprintf (const char *format, va_list ap) | |
128 | { | |
129 | char *ret = NULL; | |
130 | int status = vasprintf (&ret, format, ap); | |
131 | ||
132 | /* NULL is returned when there was a memory allocation problem, or | |
133 | any other error (for instance, a bad format string). A negative | |
134 | status (the printed length) with a non-NULL buffer should never | |
135 | happen, but just to be sure. */ | |
136 | if (ret == NULL || status < 0) | |
137 | internal_error (__FILE__, __LINE__, _("vasprintf call failed")); | |
138 | return ret; | |
139 | } | |
140 | ||
d26e3629 KY |
141 | int |
142 | xsnprintf (char *str, size_t size, const char *format, ...) | |
143 | { | |
144 | va_list args; | |
145 | int ret; | |
146 | ||
147 | va_start (args, format); | |
148 | ret = vsnprintf (str, size, format, args); | |
149 | gdb_assert (ret < size); | |
150 | va_end (args); | |
151 | ||
152 | return ret; | |
153 | } | |
baea0dae PA |
154 | |
155 | char * | |
156 | savestring (const char *ptr, size_t len) | |
157 | { | |
158 | char *p = (char *) xmalloc (len + 1); | |
159 | ||
160 | memcpy (p, ptr, len); | |
161 | p[len] = 0; | |
162 | return p; | |
163 | } |