lib/malloc/scratch_buffer

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This source file includes following definitions.

__libc_scratch_buffer_dupfree

     1 /* Variable-sized buffer with on-stack default allocation.
     2    Copyright (C) 2020-2023 Free Software Foundation, Inc.
     3    This file is part of the GNU C Library.
     4 
     5    The GNU C Library is free software; you can redistribute it and/or
     6    modify it under the terms of the GNU Lesser General Public
     7    License as published by the Free Software Foundation; either
     8    version 2.1 of the License, or (at your option) any later version.
     9 
    10    The GNU C Library is distributed in the hope that it will be useful,
    11    but WITHOUT ANY WARRANTY; without even the implied warranty of
    12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13    Lesser General Public License for more details.
    14 
    15    You should have received a copy of the GNU Lesser General Public
    16    License along with the GNU C Library; if not, see
    17    <https://www.gnu.org/licenses/>.  */
    18 
    19 #ifndef _LIBC
    20 # include <libc-config.h>
    21 #endif
    22 
    23 #include <scratch_buffer.h>
    24 #include <string.h>
    25 
    26 void *
    27 __libc_scratch_buffer_dupfree (struct scratch_buffer *buffer, size_t size)
    28 {
    29   void *data = buffer->data;
    30   if (data == buffer->__space.__c)
    31     {
    32       void *copy = malloc (size);
    33       return copy != NULL ? memcpy (copy, data, size) : NULL;
    34     }
    35   else
    36     {
    37       void *copy = realloc (data, size);
    38       return copy != NULL ? copy : data;
    39     }
    40 }
    41 libc_hidden_def (__libc_scratch_buffer_dupfree)

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root/lib/malloc/scratch_buffer_dupfree.c

DEFINITIONS