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/*
* Copyright (c) 2018-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#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];
}
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