103 строки
2.6 KiB
C
103 строки
2.6 KiB
C
/*
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* Copyright (c) Microsoft Corporation
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include "ebpf_platform.h"
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#include "framework.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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typedef enum _ebpf_object_type
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{
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EBPF_OBJECT_UNKNOWN,
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EBPF_OBJECT_MAP,
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EBPF_OBJECT_LINK,
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EBPF_OBJECT_PROGRAM,
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} ebpf_object_type_t;
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typedef struct _ebpf_object ebpf_object_t;
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typedef void (*ebpf_free_object_t)(ebpf_object_t* object);
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typedef struct _ebpf_object
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{
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uint32_t marker;
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volatile int32_t reference_count;
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ebpf_object_type_t type;
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ebpf_free_object_t free_function;
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ebpf_list_entry_t entry;
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} ebpf_object_t;
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/**
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* @brief Initiate object tracking.
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*
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*/
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void
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ebpf_object_tracking_initiate();
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/**
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* @brief Terminate object tracking.
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*
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*/
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void
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ebpf_object_tracking_terminate();
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/**
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* @brief Initialize an ebpf_object_t structure.
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*
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* @param[in,out] object ebpf_object_t structure to initialize.
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* @param[in] object_type The type of the object.
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* @param[in] free_function The function used to free the object.
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*/
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void
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ebpf_object_initialize(ebpf_object_t* object, ebpf_object_type_t object_type, ebpf_free_object_t free_function);
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/**
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* @brief Acquire a reference to this object.
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*
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* @param[in] object Object on which to acquire a reference.
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*/
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void
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ebpf_object_acquire_reference(ebpf_object_t* object);
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/**
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* @brief Release a reference on this object. If the reference count reaches
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* zero, the free_function is invoked on the object.
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*
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* @param[in] object Object on which to release a reference.
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*/
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void
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ebpf_object_release_reference(ebpf_object_t* object);
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/**
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* @brief Query the stored type of the object.
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*
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* @param[in] object Object to be queried.
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* @return Type of the object.
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*/
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ebpf_object_type_t
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ebpf_object_get_type(ebpf_object_t* object);
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/**
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* @brief Find the next object that is of this type and acquire reference
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* on it.
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*
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* @param[in] previous_object Previous object that was found. Can be NULL
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* to find first object.
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* @param[in] type Type of object to find.
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* @param[out] next_object Pointer to memory containing the next object or
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* NULL if there are no more objects of that type.
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*/
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void
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ebpf_object_reference_next_object(
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ebpf_object_t* previous_object, ebpf_object_type_t type, ebpf_object_t** next_object);
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#ifdef __cplusplus
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}
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#endif
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