| /* Shared allocation functions for GDB, the GNU debugger. |
| |
| Copyright (C) 1986-2021 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| /* This file is unusual. |
| |
| Because both libiberty and readline define xmalloc and friends, the |
| functions in this file can't appear in a library -- that will cause |
| link errors. |
| |
| And, because we want to turn the common code into a library, this |
| file can't live there. |
| |
| So, it lives in gdb and is built separately by gdb and gdbserver. |
| Please be aware of this when modifying it. |
| |
| This also explains why this file includes common-defs.h and not |
| defs.h or server.h -- we'd prefer to avoid depending on the |
| GDBSERVER define when possible, and for this file it seemed |
| simple to do so. */ |
| |
| #include "gdbsupport/common-defs.h" |
| #include "libiberty.h" |
| #include "gdbsupport/errors.h" |
| |
| /* The xmalloc() (libiberty.h) family of memory management routines. |
| |
| These are like the ISO-C malloc() family except that they implement |
| consistent semantics and guard against typical memory management |
| problems. */ |
| |
| /* NOTE: These are declared using PTR to ensure consistency with |
| "libiberty.h". xfree() is GDB local. */ |
| |
| PTR /* ARI: PTR */ |
| xmalloc (size_t size) |
| { |
| void *val; |
| |
| /* See libiberty/xmalloc.c. This function need's to match that's |
| semantics. It never returns NULL. */ |
| if (size == 0) |
| size = 1; |
| |
| val = malloc (size); /* ARI: malloc */ |
| if (val == NULL) |
| malloc_failure (size); |
| |
| return val; |
| } |
| |
| PTR /* ARI: PTR */ |
| xrealloc (PTR ptr, size_t size) /* ARI: PTR */ |
| { |
| void *val; |
| |
| /* See libiberty/xmalloc.c. This function need's to match that's |
| semantics. It never returns NULL. */ |
| if (size == 0) |
| size = 1; |
| |
| if (ptr != NULL) |
| val = realloc (ptr, size); /* ARI: realloc */ |
| else |
| val = malloc (size); /* ARI: malloc */ |
| if (val == NULL) |
| malloc_failure (size); |
| |
| return val; |
| } |
| |
| PTR /* ARI: PTR */ |
| xcalloc (size_t number, size_t size) |
| { |
| void *mem; |
| |
| /* See libiberty/xmalloc.c. This function need's to match that's |
| semantics. It never returns NULL. */ |
| if (number == 0 || size == 0) |
| { |
| number = 1; |
| size = 1; |
| } |
| |
| mem = calloc (number, size); /* ARI: xcalloc */ |
| if (mem == NULL) |
| malloc_failure (number * size); |
| |
| return mem; |
| } |
| |
| void |
| xmalloc_failed (size_t size) |
| { |
| malloc_failure (size); |
| } |