nuttx/libs/libc/unistd/lib_gettid.c
Gregory Nutt ebdfd16f0f Move gettid() implementation to /libs/libc/unistd
Move sched/task/task/task_gettid.c to libs/libc/unistd/lib_gettid.c.  gettid() is a dumb wrapper around getpid().  It is wasteful of resources to support TWO systme calls, one for getpid() and one for gettid().  Instead, move gettid() in the C library where it calls the single sysgtem call, getpid().  Much cleaner.
2020-09-22 19:40:56 -07:00

50 lines
1.8 KiB
C

/****************************************************************************
* libs/libc/unistd/lib_gettid.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <sys/types.h>
#include <unistd.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: gettid
*
* Description:
* Get the thread ID of the currently executing thread.
*
* Input parameters:
* None
*
* Returned Value:
* On success, returns the thread ID of the calling process.
*
****************************************************************************/
pid_t gettid(void)
{
return getpid();
}