71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2018 The strace developers.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "defs.h"
|
|
#include "retval.h"
|
|
|
|
static kernel_long_t *retval_vec;
|
|
static size_t retval_vec_capacity; /* size of the arena */
|
|
static size_t retval_vec_size; /* size of the used arena */
|
|
|
|
static void
|
|
expand_retval_vec(void)
|
|
{
|
|
const size_t old_capacity = retval_vec_capacity;
|
|
retval_vec = xgrowarray(retval_vec, &retval_vec_capacity,
|
|
sizeof(*retval_vec));
|
|
memset(retval_vec + old_capacity, 0,
|
|
(retval_vec_capacity - old_capacity)
|
|
* sizeof(*retval_vec));
|
|
}
|
|
|
|
uint16_t
|
|
retval_new(const kernel_long_t rval)
|
|
{
|
|
const uint16_t idx = retval_vec_size;
|
|
|
|
if (idx < retval_vec_size)
|
|
error_func_msg_and_die("retval index overflow");
|
|
|
|
if (retval_vec_size == retval_vec_capacity)
|
|
expand_retval_vec();
|
|
|
|
retval_vec[idx] = rval;
|
|
++retval_vec_size;
|
|
|
|
return idx;
|
|
}
|
|
|
|
kernel_long_t
|
|
retval_get(const uint16_t rval_idx)
|
|
{
|
|
if (rval_idx >= retval_vec_size)
|
|
error_func_msg_and_die("rval_idx >= retval_vec_size");
|
|
|
|
return retval_vec[rval_idx];
|
|
}
|