112 lines
3.0 KiB
C
112 lines
3.0 KiB
C
/* Shared allocation functions for GDB, the GNU debugger.
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Copyright (C) 1986-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This file is unusual.
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Because both libiberty and readline define xmalloc and friends, the
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functions in this file can't appear in a library -- that will cause
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link errors.
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And, because we want to turn the common code into a library, this
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file can't live there.
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So, it lives in gdb and is built separately by gdb and gdbserver.
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Please be aware of this when modifying it.
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This also explains why this file includes common-defs.h and not
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defs.h or server.h -- we'd prefer to avoid depending on the
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GDBSERVER define when possible, and for this file it seemed
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simple to do so. */
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#include "gdbsupport/common-defs.h"
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#include "libiberty.h"
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#include "gdbsupport/errors.h"
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/* The xmalloc() (libiberty.h) family of memory management routines.
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These are like the ISO-C malloc() family except that they implement
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consistent semantics and guard against typical memory management
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problems. */
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/* NOTE: These are declared using PTR to ensure consistency with
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"libiberty.h". xfree() is GDB local. */
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PTR /* ARI: PTR */
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xmalloc (size_t size)
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{
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void *val;
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/* See libiberty/xmalloc.c. This function need's to match that's
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semantics. It never returns NULL. */
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if (size == 0)
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size = 1;
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val = malloc (size); /* ARI: malloc */
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if (val == NULL)
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malloc_failure (size);
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return val;
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}
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PTR /* ARI: PTR */
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xrealloc (PTR ptr, size_t size) /* ARI: PTR */
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{
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void *val;
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/* See libiberty/xmalloc.c. This function need's to match that's
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semantics. It never returns NULL. */
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if (size == 0)
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size = 1;
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if (ptr != NULL)
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val = realloc (ptr, size); /* ARI: realloc */
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else
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val = malloc (size); /* ARI: malloc */
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if (val == NULL)
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malloc_failure (size);
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return val;
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}
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PTR /* ARI: PTR */
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xcalloc (size_t number, size_t size)
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{
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void *mem;
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/* See libiberty/xmalloc.c. This function need's to match that's
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semantics. It never returns NULL. */
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if (number == 0 || size == 0)
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{
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number = 1;
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size = 1;
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}
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mem = calloc (number, size); /* ARI: xcalloc */
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if (mem == NULL)
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malloc_failure (number * size);
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return mem;
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}
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void
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xmalloc_failed (size_t size)
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{
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malloc_failure (size);
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}
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