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62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* Copyright (C) 2009-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <printf.h>
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#include <stdlib.h>
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#include <libc-lock.h>
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/* Array of functions indexed by format character. */
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libc_freeres_ptr (printf_va_arg_function **__printf_va_arg_table)
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attribute_hidden;
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__libc_lock_define_initialized (static, lock);
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/* Last type allocated. */
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static int pa_next_type = PA_LAST;
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int
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__register_printf_type (printf_va_arg_function fct)
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{
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int result = -1;
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__libc_lock_lock (lock);
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if (__printf_va_arg_table == NULL)
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{
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__printf_va_arg_table = (printf_va_arg_function **)
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calloc (0x100 - PA_LAST, sizeof (void *));
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if (__printf_va_arg_table == NULL)
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goto out;
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}
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if (pa_next_type == 0x100)
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__set_errno (ENOSPC);
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else
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{
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result = pa_next_type++;
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__printf_va_arg_table[result - PA_LAST] = fct;
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}
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out:
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__libc_lock_unlock (lock);
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return result;
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}
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weak_alias (__register_printf_type, register_printf_type)
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