40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
#ifndef NETWORK_SWITCH_SHARED_BUFFER_H
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#define NETWORK_SWITCH_SHARED_BUFFER_H
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#include "network/switch/switch_buffer.h"
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namespace dofs {
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// SharedBuffer: a single global memory pool shared by all ports.
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// Only guard is the total pool (_buffer_bytes). Per-port usage tracked for stats.
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class SharedBuffer : public SwitchBuffer {
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public:
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SharedBuffer(Simulator* const sim,
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NetworkSwitch* const owner,
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Bytes total_bytes,
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uint16_t ports);
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virtual bool enqueue_packet(const Packet& pkt, PortId egress,
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FlowPriority prio) override;
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virtual bool drain_one(PortId port) override;
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protected:
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virtual std::array<std::deque<Queued>, PRI_COUNT> &queues_for(
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PortId p) override;
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virtual const std::array<std::deque<Queued>, PRI_COUNT> &queues_for(
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PortId p) const override;
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virtual bool on_enqueue_cap_check(PortId port, Bytes sz) override;
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virtual void on_enqueue_commit(PortId port, Bytes sz) override;
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virtual void on_dequeue_commit(PortId port, Bytes sz) override;
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private:
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// Per-port, per-priority queues
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std::vector<std::array<std::deque<Queued>, PRI_COUNT >> _per_port_queues;
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Bytes _used_total;
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};
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} // namespace dofs
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#endif // NETWORK_SWITCH_SHARED_BUFFER_H
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