luchianmihai/walnux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

libc/pthread: add pthread_attr_set/getscope

Browse source 
refs to https://pubs.opengroup.org/onlinepubs/7908799/xsh/pthread_attr_setscope.html

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
This commit is contained in:
dongjiuzhu1 2023-06-05 16:49:30 +08:00 • committed by Xiang Xiao
parent 2221612512
commit afb473707f
4 changed files with 144 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
include/pthread.h
View file

@ -187,6 +187,11 @@
#define _PTHREAD_MFLAGS_INCONSISTENT (1 << 1) /* Mutex is in an inconsistent state */
#define _PTHREAD_MFLAGS_NRECOVERABLE (1 << 2) /* Inconsistent mutex has been unlocked */
/* The contention scope attribute in thread attributes object */
#define PTHREAD_SCOPE_SYSTEM 0
#define PTHREAD_SCOPE_PROCESS 1
/****************************************************************************
* Public Type Definitions
****************************************************************************/
@ -488,6 +493,11 @@ int pthread_attr_setstack(FAR pthread_attr_t *attr,
int pthread_attr_getstack(FAR const pthread_attr_t *attr,
FAR void **stackaddr, FAR size_t *stacksize);
/* Set/get contention scope attribute in thread attributes object */
int pthread_attr_setscope(FAR pthread_attr_t *attr, int scope);
int pthread_attr_getscope(FAR const pthread_attr_t *attr, FAR int *scope);
/* Set or get the name of a thread */
int pthread_setname_np(pthread_t thread, FAR const char *name);

1
libs/libc/pthread/Make.defs
View file

@ -35,6 +35,7 @@ CSRCS += pthread_attr_setstackaddr.c pthread_attr_getstackaddr.c
CSRCS += pthread_attr_setstacksize.c pthread_attr_getstacksize.c
CSRCS += pthread_attr_setstack.c pthread_attr_getstack.c
CSRCS += pthread_attr_setschedparam.c pthread_attr_getschedparam.c
CSRCS += pthread_attr_setscope.c pthread_attr_getscope.c
CSRCS += pthread_barrierattr_init.c pthread_barrierattr_destroy.c
CSRCS += pthread_barrierattr_getpshared.c pthread_barrierattr_setpshared.c
CSRCS += pthread_barrierinit.c pthread_barrierdestroy.c

53
libs/libc/pthread/pthread_attr_getscope.c Normal file
View file

@ -0,0 +1,53 @@
/****************************************************************************
* libs/libc/pthread/pthread_attr_getscope.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 <pthread.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: pthread_attr_getscope
*
* Description:
* The function returns the contention scope attribute of the thread
* attributes object referred to by attr in the buffer pointed to
* by scope.
*
* Input Parameters:
* attr - The pointer to pthread attr.
* scope - The pointer to scope
*
* Returned Value:
* On success, these functions return 0; on error, they return a nonzero
* error number.
*
****************************************************************************/
int pthread_attr_getscope(FAR const pthread_attr_t *attr, FAR int *scope)
{
*scope = PTHREAD_SCOPE_SYSTEM;
return 0;
}

80
libs/libc/pthread/pthread_attr_setscope.c Normal file
View file

@ -0,0 +1,80 @@
/****************************************************************************
* libs/libc/pthread/pthread_attr_setscope.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 <pthread.h>
#include <errno.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: pthread_attr_setscope
*
* Description:
* The function sets the contention scope attribute of the thread
* attributes object referred to by attr to the value specified in scope.
* The contention scope attributes defines the set of threads against
* which a thread competes for resources such as the CPU.
*
* POSIX.1 specifies two possible values for scope:
* PTHREAD_SCOPE_SYSTEM:
* The thread competes for resources with all other threads in all
* processes on the system that are in the same scheduling allocation
* domain (a group of one or more processors).
* PTHREAD_SCOPE_SYSTEM threads are scheduled relative to one another
* according to their scheduling policy and priority.
*
* PTHREAD_SCOPE_PROCESS
* The thread competes for resources with all other threads in the
* same process that were also created with the PTHREAD_SCOPE_PROCESS
* contention scope. PTHREAD_SCOPE_PROCESS threads are scheduled relative
* to other threads in the process according to their scheduling policy
* and priority. POSIX.1 leaves it unspecified how these threads contend
* with other threads in other process on the system or with other
* threads in the same process that were created with the
* PTHREAD_SCOPE_SYSTEM contention scope.
*
* Input Parameters:
* attr - The pointer to pthread attr.
* scope - contention scope.
*
* Returned Value:
* On success, these functions return 0; on error, they return a nonzero
* error number.
*
****************************************************************************/
int pthread_attr_setscope(FAR pthread_attr_t *attr, int scope)
{
switch (scope)
{
case PTHREAD_SCOPE_SYSTEM:
return 0;
case PTHREAD_SCOPE_PROCESS:
return ENOTSUP;
default:
return EINVAL;
}
}