136 lines
5.2 KiB
C
136 lines
5.2 KiB
C
/****************************************************************************
|
|
* include/nuttx/kthread.h
|
|
* Non-standard, NuttX-specific kernel thread-related declarations.
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __INCLUDE_NUTTX_KTHREAD_H
|
|
#define __INCLUDE_NUTTX_KTHREAD_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <nuttx/sched.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
#ifdef __cplusplus
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: kthread_create_with_stack
|
|
*
|
|
* Description:
|
|
* This function creates and activates a kernel thread task with
|
|
* kernel-mode privileges. It is identical to kthread_create() except
|
|
* that it get the stack memory from caller.
|
|
*
|
|
* Input Parameters:
|
|
* name - Name of the new task
|
|
* priority - Priority of the new task
|
|
* stack_addr - Stack buffer of the new task
|
|
* stack_size - Stack size of the new task
|
|
* entry - Entry point of a new task
|
|
* arg - A pointer to an array of input parameters. The array
|
|
* should be terminated with a NULL argv[] value. If no
|
|
* parameters are required, argv may be NULL.
|
|
*
|
|
* Returned Value:
|
|
* Returns the positive, non-zero process ID of the new task or a negated
|
|
* errno value to indicate the nature of any failure. If memory is
|
|
* insufficient or the task cannot be created -ENOMEM will be returned.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int kthread_create_with_stack(FAR const char *name, int priority,
|
|
FAR void *stack_addr, int stack_size,
|
|
main_t entry, FAR char * const argv[]);
|
|
|
|
/****************************************************************************
|
|
* Name: kthread_create
|
|
*
|
|
* Description:
|
|
* This function creates and activates a kernel thread task with
|
|
* kernel-mode privileges. It is identical to task_create() except
|
|
* that it configures the newly started thread to run in kernel model.
|
|
*
|
|
* Input Parameters:
|
|
* name - Name of the new task
|
|
* priority - Priority of the new task
|
|
* stack_size - size (in bytes) of the stack needed
|
|
* entry - Entry point of a new task
|
|
* arg - A pointer to an array of input parameters. The array
|
|
* should be terminated with a NULL argv[] value. If no
|
|
* parameters are required, argv may be NULL.
|
|
*
|
|
* Returned Value:
|
|
* Returns the positive, non-zero process ID of the new task or a negated
|
|
* errno value to indicate the nature of any failure. If memory is
|
|
* insufficient or the task cannot be created -ENOMEM will be returned.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int kthread_create(FAR const char *name, int priority, int stack_size,
|
|
main_t entry, FAR char * const argv[]);
|
|
|
|
/****************************************************************************
|
|
* Name: kthread_delete
|
|
*
|
|
* Description:
|
|
* This function will terminate a kernel thread. At present, this
|
|
* function is equivalent to task_delete.c; the following definition
|
|
* simply reserves the name in the name space.
|
|
*
|
|
* Refer to comments with nxtask_delete() for a more detailed description
|
|
* of the operation of this function.
|
|
*
|
|
* Input Parameters:
|
|
* pid - The task ID of the task to delete. A pid of zero
|
|
* signifies the calling task.
|
|
*
|
|
* Returned Value:
|
|
* OK on success; or negated errno on failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#define kthread_delete(p) nxtask_delete(p)
|
|
|
|
#undef EXTERN
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __INCLUDE_NUTTX_KTHREAD_H */
|