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/*
*
* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*==============================================*
* include header files *
*----------------------------------------------*/
#include "select_adapt.h"
/*==============================================*
* constants or macros define *
*----------------------------------------------*/
/*==============================================*
* project-wide global variables *
*----------------------------------------------*/
struct select_fd_map_inf g_select_fd_map;
/*==============================================*
* routines' or functions' implementations *
*----------------------------------------------*/
void *select_alloc(int size)
{
char *p;
if (size <= 0)
{
return NULL;
}
p = malloc(size);
if (!p)
{
return NULL;
}
if (EOK != memset_s(p, size, 0, size))
{
free(p);
p = NULL;
}
return p;
}
/*point is set to NULL because it's freeed */
void select_free(void *p)
{
if (p)
{
free(p);
p = NULL;
}
}
struct select_comm_fd_map *get_select_fdinf(i32 fd)
{
if ((fd < 0) || ((u32) fd >= NSTACK_SELECT_MAX_FD))
{
return NULL;
}
return (&g_select_fd_map.fdinf[fd]);
}
void reset_select_fdinf(i32 fd)
{
i32 i;
struct select_comm_fd_map *fdinf = get_select_fdinf(fd);
/* fdinf is possible is null */
if (NULL == fdinf)
{
return;
}
fdinf->index = -1;
for (i = 0; i < NSTACK_MAX_MODULE_NUM; i++)
{
fdinf->mod_fd[i] = -1;
}
}
i32 select_get_modfd(i32 fd, i32 inx)
{
if ((fd < 0) || ((u32) fd >= NSTACK_SELECT_MAX_FD))
{
return -1;
}
if ((inx < 0))
{
return -1;
}
if (!g_select_fd_map.fdinf)
{
return FALSE;
}
return (g_select_fd_map.fdinf[fd].mod_fd[inx]);
}
i32 select_set_modfd(i32 fd, i32 inx, i32 modfd)
{
if ((fd < 0) || ((u32) fd >= NSTACK_SELECT_MAX_FD))
{
return -1;
}
if (!g_select_fd_map.fdinf)
{
return FALSE;
}
g_select_fd_map.fdinf[fd].mod_fd[inx] = modfd;
return TRUE;
}
i32 select_get_modindex(i32 fd)
{
if ((fd < 0) || ((u32) fd >= NSTACK_SELECT_MAX_FD))
{
return -1;
}
return g_select_fd_map.fdinf[fd].index;
}
i32 select_get_commfd(i32 modfd, i32 inx)
{
if ((modfd < 0) || ((u32) modfd >= NSTACK_SELECT_MAX_FD))
{
return -1;
}
return g_select_fd_map.modinf[inx].comm_fd[modfd];
}
i32 select_set_commfd(i32 modfd, i32 inx, i32 fd)
{
if ((modfd < 0) || ((u32) modfd >= NSTACK_SELECT_MAX_FD))
{
return -1;
}
if (!g_select_fd_map.modinf[inx].comm_fd)
{
return FALSE;
}
g_select_fd_map.modinf[inx].comm_fd[modfd] = fd;
return TRUE;
}
i32 select_set_index(i32 fd, i32 inx)
{
if ((fd < 0) || ((u32) fd >= NSTACK_SELECT_MAX_FD))
{
return -1;
}
if (!g_select_fd_map.fdinf)
{
return FALSE;
}
g_select_fd_map.fdinf[fd].index = inx;
return TRUE;
}
i32 fdmapping_init(void)
{
int ret = FALSE;
int i, inx;
g_select_fd_map.fdinf =
(struct select_comm_fd_map *)
select_alloc(sizeof(struct select_comm_fd_map) *
NSTACK_SELECT_MAX_FD);
if (NULL == g_select_fd_map.fdinf)
{
goto err_return;
}
for (i = 0; i < nstack_get_module_num(); i++)
{
g_select_fd_map.modinf[i].comm_fd =
(i32 *) select_alloc(sizeof(i32) * NSTACK_SELECT_MAX_FD);
if (NULL == g_select_fd_map.modinf[i].comm_fd)
{
goto err_return;
}
}
u32 fd_idx = 0;
for (fd_idx = 0; fd_idx < NSTACK_SELECT_MAX_FD; fd_idx++)
{
reset_select_fdinf(fd_idx);
}
for (inx = 0; inx < nstack_get_module_num(); inx++)
{
for (fd_idx = 0; fd_idx < NSTACK_SELECT_MAX_FD; fd_idx++)
{
select_set_commfd(fd_idx, inx, -1);
}
}
ret = TRUE;
return ret;
err_return:
select_free((char *) g_select_fd_map.fdinf);
for (i = 0; i < nstack_get_module_num(); i++)
{
select_free((char *) g_select_fd_map.modinf[i].comm_fd);
}
return ret;
}
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