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fangxinyong
d2b87c7189
Use a local ret variable and return once at the end. This keeps the IDLE_PROCESS_ID fallback behavior unchanged. Addresses Coverity HIS_metric_violation: RETURN. Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/****************************************************************************
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* sched/task/task_getpid.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <sys/types.h>
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#include <unistd.h>
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#include <sched.h>
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#include <errno.h>
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#include "sched/sched.h"
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#include "task/task.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxsched_getpid
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*
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* Description:
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* Get the Process ID of the currently executing task.
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*
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* Input parameters:
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* None
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*
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* Returned Value:
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* Normally when called from user applications, nxsched_getpid() will
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* return the Process ID of the currently executing task. that is,
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* the main task for the task groups. There is no specification for
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* any errors returned from nxsched_getpid().
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*
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****************************************************************************/
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pid_t nxsched_getpid(void)
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{
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FAR struct tcb_s *rtcb;
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pid_t ret = IDLE_PROCESS_ID;
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/* Get the TCB at the head of the ready-to-run task list. That
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* will usually be the currently executing task. There is are two
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* exceptions to this:
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*
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* Early in the start-up sequence, the ready-to-run list may be
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* empty! In this case, of course, the CPU0 start-up/IDLE thread with
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* pid == 0 must be running, and
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*/
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rtcb = this_task();
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if (rtcb != NULL)
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{
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/* Yes.. Return the Process ID */
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ret = rtcb->group->tg_pid;
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}
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return ret;
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}
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