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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 "pidinfo.h"
#include "nstack_securec.h"
inline i32
nsfw_pidinfo_init (nsfw_pidinfo * pidinfo)
{
int retVal =
MEMSET_S (pidinfo, sizeof (nsfw_pidinfo), 0, sizeof (nsfw_pidinfo));
if (EOK != retVal)
{
return -1;
}
return 0;
}
inline int
nsfw_add_pid (nsfw_pidinfo * pidinfo, u32 pid)
{
u32 i;
for (i = 0; i < NSFW_MAX_FORK_NUM; i++)
{
if ((0 == pidinfo->apid[i])
&& (__sync_bool_compare_and_swap (&pidinfo->apid[i], 0, pid)))
{
if (pidinfo->used_size < i + 1)
{
pidinfo->used_size = i + 1;
}
return 0;
}
}
return -1;
}
inline int
nsfw_del_pid (nsfw_pidinfo * pidinfo, u32 pid)
{
u32 i;
for (i = 0; i < pidinfo->used_size && i < NSFW_MAX_FORK_NUM; i++)
{
if (pid == pidinfo->apid[i])
{
pidinfo->apid[i] = 0;
return 0;
}
}
return -1;
}
inline int
nsfw_del_last_pid (nsfw_pidinfo * pidinfo, u32 pid)
{
u32 i;
int count = 0;
int deleted = 0;
for (i = 0; i < pidinfo->used_size && i < NSFW_MAX_FORK_NUM; i++)
{
if (pid == pidinfo->apid[i])
{
pidinfo->apid[i] = 0;
deleted = 1;
continue;
}
if (pidinfo->apid[i] != 0)
{
++count;
}
}
if (!deleted)
{
return -1;
}
return count;
}
inline int
nsfw_pid_exist (nsfw_pidinfo * pidinfo, u32 pid)
{
u32 i;
for (i = 0; i < pidinfo->used_size && i < NSFW_MAX_FORK_NUM; i++)
{
if (pid == pidinfo->apid[i])
{
return 1;
}
}
return 0;
}
inline int
nsfw_pidinfo_empty (nsfw_pidinfo * pidinfo)
{
u32 i;
for (i = 0; i < pidinfo->used_size && i < NSFW_MAX_FORK_NUM; i++)
{
if (pidinfo->apid[i] != 0)
{
return 0;
}
}
return 1;
}
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