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79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* Memory handling for libdw.
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Copyright (C) 2003, 2004, 2006 Red Hat, Inc.
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This file is part of elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 2003.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <error.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "libdwP.h"
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#include "system.h"
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void *
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__libdw_allocate (Dwarf *dbg, size_t minsize, size_t align)
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{
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size_t size = MAX (dbg->mem_default_size,
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(align - 1 +
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2 * minsize + offsetof (struct libdw_memblock, mem)));
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struct libdw_memblock *newp = malloc (size);
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if (newp == NULL)
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dbg->oom_handler ();
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uintptr_t result = ((uintptr_t) newp->mem + align - 1) & ~(align - 1);
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newp->size = size - offsetof (struct libdw_memblock, mem);
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newp->remaining = (uintptr_t) newp + size - (result + minsize);
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newp->prev = dbg->mem_tail;
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dbg->mem_tail = newp;
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return (void *) result;
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}
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Dwarf_OOM
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dwarf_new_oom_handler (Dwarf *dbg, Dwarf_OOM handler)
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{
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Dwarf_OOM old = dbg->oom_handler;
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dbg->oom_handler = handler;
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return old;
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}
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void
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__attribute ((noreturn, visibility ("hidden")))
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__libdw_oom (void)
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{
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while (1)
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error (EXIT_FAILURE, ENOMEM, "libdw");
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}
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