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