rt-thread/components/lwp/lwp_pid.h

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/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-02-23 Jesven first version.
*/
#ifndef LWP_PID_H__
#define LWP_PID_H__
#include "lwp.h"
#ifdef __cplusplus
extern "C" {
#endif
#define LWP_CREATE_FLAG_NONE 0x0000
#define LWP_CREATE_FLAG_ALLOC_PID 0x0001 /* allocate pid on lwp object create */
struct rt_lwp;
struct lwp_avl_struct *lwp_get_pid_ary(void);
int lwp_pid_init(void);
void lwp_pid_put(struct rt_lwp *lwp);
void lwp_pid_lock_take(void);
void lwp_pid_lock_release(void);
/**
* @brief Create a new lwp object
* This will initialize the member in the object and register to system.
* Besides, a new pid is allocate with lwp
*
* @param flags control the property of the lwp object. Can be ORed with:
* LWP_CREATE_FLAG_NONE: raw lwp object
* LWP_CREATE_FLAG_ALLOC_PID: lwp object with specified pid
*
* @return struct rt_lwp* object
*/
struct rt_lwp* lwp_create(rt_base_t flags);
void lwp_free(struct rt_lwp* lwp);
int lwp_ref_inc(struct rt_lwp *lwp);
int lwp_ref_dec(struct rt_lwp *lwp);
struct rt_lwp* lwp_from_pid_locked(pid_t pid);
pid_t lwp_to_pid(struct rt_lwp* lwp);
pid_t lwp_name2pid(const char* name);
char* lwp_pid2name(int32_t pid);
int lwp_getpid(void);
pid_t lwp_waitpid(const pid_t pid, int *status, int options);
pid_t waitpid(pid_t pid, int *status, int options);
long list_process(void);
void lwp_user_object_lock_init(struct rt_lwp *lwp);
void lwp_user_object_lock_destroy(struct rt_lwp *lwp);
void lwp_user_object_lock(struct rt_lwp *lwp);
void lwp_user_object_unlock(struct rt_lwp *lwp);
int lwp_user_object_add(struct rt_lwp *lwp, rt_object_t object);
rt_err_t lwp_user_object_delete(struct rt_lwp *lwp, rt_object_t object);
void lwp_user_object_clear(struct rt_lwp *lwp);
void lwp_user_object_dup(struct rt_lwp *dst_lwp, struct rt_lwp *src_lwp);
rt_inline struct rt_lwp *lwp_from_pid_and_lock(pid_t pid)
{
struct rt_lwp *lwp;
lwp_pid_lock_take();
lwp = lwp_from_pid_locked(pid);
if (lwp)
lwp_ref_inc(lwp);
lwp_pid_lock_release();
return lwp;
}
rt_inline void lwp_from_pid_release_lock(struct rt_lwp *lwp)
{
if (lwp)
lwp_ref_dec(lwp);
}
void lwp_thread_exit(rt_thread_t thread, rt_base_t status);
void lwp_exit(struct rt_lwp *lwp, rt_base_t status);
#ifdef __cplusplus
}
#endif
#endif