1 /* Shared allocation functions for GDB, the GNU debugger. 2 3 Copyright (C) 1986-2024 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 /* This file is unusual. 21 22 Because both libiberty and readline define xmalloc and friends, the 23 functions in this file can't appear in a library -- that will cause 24 link errors. 25 26 And, because we want to turn the common code into a library, this 27 file can't live there. 28 29 So, it lives in gdb and is built separately by gdb and gdbserver. 30 Please be aware of this when modifying it. */ 31 32 33 #include "libiberty.h" 34 #include "gdbsupport/errors.h" 35 36 /* The xmalloc() (libiberty.h) family of memory management routines. 37 38 These are like the ISO-C malloc() family except that they implement 39 consistent semantics and guard against typical memory management 40 problems. */ 41 42 void * 43 xmalloc (size_t size) 44 { 45 void *val; 46 47 /* See libiberty/xmalloc.c. This function need's to match that's 48 semantics. It never returns NULL. */ 49 if (size == 0) 50 size = 1; 51 52 val = malloc (size); /* ARI: malloc */ 53 if (val == NULL) 54 malloc_failure (size); 55 56 return val; 57 } 58 59 void * 60 xrealloc (void *ptr, size_t size) 61 { 62 void *val; 63 64 /* See libiberty/xmalloc.c. This function need's to match that's 65 semantics. It never returns NULL. */ 66 if (size == 0) 67 size = 1; 68 69 if (ptr != NULL) 70 val = realloc (ptr, size); /* ARI: realloc */ 71 else 72 val = malloc (size); /* ARI: malloc */ 73 if (val == NULL) 74 malloc_failure (size); 75 76 return val; 77 } 78 79 void * 80 xcalloc (size_t number, size_t size) 81 { 82 void *mem; 83 84 /* See libiberty/xmalloc.c. This function need's to match that's 85 semantics. It never returns NULL. */ 86 if (number == 0 || size == 0) 87 { 88 number = 1; 89 size = 1; 90 } 91 92 mem = calloc (number, size); /* ARI: xcalloc */ 93 if (mem == NULL) 94 malloc_failure (number * size); 95 96 return mem; 97 } 98 99 void 100 xmalloc_failed (size_t size) 101 { 102 malloc_failure (size); 103 } 104