me.bechberger.ebpf.bpf.raw.tpacket_block_desc Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of rawbpf Show documentation
Raw Panama bindings for libbpf generated for jextract on 64-bit Linux
The newest version!
// Generated by jextract

package me.bechberger.ebpf.bpf.raw;

import java.lang.invoke.*;
import java.lang.foreign.*;
import java.nio.ByteOrder;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

import static java.lang.foreign.ValueLayout.*;
import static java.lang.foreign.MemoryLayout.PathElement.*;

/**
 * {@snippet lang=c :
 * struct tpacket_block_desc {
 *     __u32 version;
 *     __u32 offset_to_priv;
 *     union tpacket_bd_header_u hdr;
 * }
 * }
 */
public class tpacket_block_desc {

    tpacket_block_desc() {
        // Should not be called directly
    }

    private static final GroupLayout $LAYOUT = MemoryLayout.structLayout(
        Lib.C_INT.withName("version"),
        Lib.C_INT.withName("offset_to_priv"),
        tpacket_bd_header_u.layout().withName("hdr")
    ).withName("tpacket_block_desc");

    /**
     * The layout of this struct
     */
    public static final GroupLayout layout() {
        return $LAYOUT;
    }

    private static final OfInt version$LAYOUT = (OfInt)$LAYOUT.select(groupElement("version"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * __u32 version
     * }
     */
    public static final OfInt version$layout() {
        return version$LAYOUT;
    }

    private static final long version$OFFSET = 0;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * __u32 version
     * }
     */
    public static final long version$offset() {
        return version$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * __u32 version
     * }
     */
    public static int version(MemorySegment struct) {
        return struct.get(version$LAYOUT, version$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * __u32 version
     * }
     */
    public static void version(MemorySegment struct, int fieldValue) {
        struct.set(version$LAYOUT, version$OFFSET, fieldValue);
    }

    private static final OfInt offset_to_priv$LAYOUT = (OfInt)$LAYOUT.select(groupElement("offset_to_priv"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * __u32 offset_to_priv
     * }
     */
    public static final OfInt offset_to_priv$layout() {
        return offset_to_priv$LAYOUT;
    }

    private static final long offset_to_priv$OFFSET = 4;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * __u32 offset_to_priv
     * }
     */
    public static final long offset_to_priv$offset() {
        return offset_to_priv$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * __u32 offset_to_priv
     * }
     */
    public static int offset_to_priv(MemorySegment struct) {
        return struct.get(offset_to_priv$LAYOUT, offset_to_priv$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * __u32 offset_to_priv
     * }
     */
    public static void offset_to_priv(MemorySegment struct, int fieldValue) {
        struct.set(offset_to_priv$LAYOUT, offset_to_priv$OFFSET, fieldValue);
    }

    private static final GroupLayout hdr$LAYOUT = (GroupLayout)$LAYOUT.select(groupElement("hdr"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * union tpacket_bd_header_u hdr
     * }
     */
    public static final GroupLayout hdr$layout() {
        return hdr$LAYOUT;
    }

    private static final long hdr$OFFSET = 8;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * union tpacket_bd_header_u hdr
     * }
     */
    public static final long hdr$offset() {
        return hdr$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * union tpacket_bd_header_u hdr
     * }
     */
    public static MemorySegment hdr(MemorySegment struct) {
        return struct.asSlice(hdr$OFFSET, hdr$LAYOUT.byteSize());
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * union tpacket_bd_header_u hdr
     * }
     */
    public static void hdr(MemorySegment struct, MemorySegment fieldValue) {
        MemorySegment.copy(fieldValue, 0L, struct, hdr$OFFSET, hdr$LAYOUT.byteSize());
    }

    /**
     * Obtains a slice of {@code arrayParam} which selects the array element at {@code index}.
     * The returned segment has address {@code arrayParam.address() + index * layout().byteSize()}
     */
    public static MemorySegment asSlice(MemorySegment array, long index) {
        return array.asSlice(layout().byteSize() * index);
    }

    /**
     * The size (in bytes) of this struct
     */
    public static long sizeof() { return layout().byteSize(); }

    /**
     * Allocate a segment of size {@code layout().byteSize()} using {@code allocator}
     */
    public static MemorySegment allocate(SegmentAllocator allocator) {
        return allocator.allocate(layout());
    }

    /**
     * Allocate an array of size {@code elementCount} using {@code allocator}.
     * The returned segment has size {@code elementCount * layout().byteSize()}.
     */
    public static MemorySegment allocateArray(long elementCount, SegmentAllocator allocator) {
        return allocator.allocate(MemoryLayout.sequenceLayout(elementCount, layout()));
    }

    /**
     * Reinterprets {@code addr} using target {@code arena} and {@code cleanupAction} (if any).
     * The returned segment has size {@code layout().byteSize()}
     */
    public static MemorySegment reinterpret(MemorySegment addr, Arena arena, Consumer cleanup) {
        return reinterpret(addr, 1, arena, cleanup);
    }

    /**
     * Reinterprets {@code addr} using target {@code arena} and {@code cleanupAction} (if any).
     * The returned segment has size {@code elementCount * layout().byteSize()}
     */
    public static MemorySegment reinterpret(MemorySegment addr, long elementCount, Arena arena, Consumer cleanup) {
        return addr.reinterpret(layout().byteSize() * elementCount, arena, cleanup);
    }
}