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Kernel: Make KBuffer a value-type wrapper around a KBufferImpl

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A KBuffer always contains a valid KBufferImpl. If you need a "null"
state buffer, use Optional<KBuffer>.

This makes KBuffer very easy to work with and pass around, just like
ByteBuffer before it.
This commit is contained in:
Andreas Kling 2019-08-05 11:06:21 +02:00
parent 52cfe9ebae
commit 605975adb5
6 changed files with 50 additions and 22 deletions
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4
Kernel/Net/NetworkAdapter.h
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@ -29,7 +29,7 @@ public:
void send(const MACAddress&, const ARPPacket&);
void send_ipv4(const MACAddress&, const IPv4Address&, IPv4Protocol, const u8* payload, size_t payload_size);
RefPtr<KBuffer> dequeue_packet();
Optional<KBuffer> dequeue_packet();
bool has_queued_packets() const { return !m_packet_queue.is_empty(); }
@ -43,6 +43,6 @@ protected:
private:
MACAddress m_mac_address;
IPv4Address m_ipv4_address;
SinglyLinkedList<NonnullRefPtr<KBuffer>> m_packet_queue;
SinglyLinkedList<KBuffer> m_packet_queue;
String m_name;
};