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eIPC

Inter-Process Communication

High-performance IPC library with zero-copy message passing, pub/sub, RPC, and shared memory — all with minimal overhead for real-time applications.

Platform FoundationC/C++Active Development

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Key Features

Zero-Copy Message Passing — Lock-free ring buffers

Publish-Subscribe — QoS levels (best-effort, reliable)

Remote Procedure Call — Sync and async RPC

Shared Memory — Named regions with access control

Cross-Platform — eos, Linux, macOS, Windows

Transport Abstraction — In-process, IPC, network, serial

Discovery Service — Automatic service discovery

Architecture

Application Layer (Publisher, Subscriber, RPC)
├── eIPC Core (Serialization, Routing, QoS, Discovery)
├── In-Process (Ring Buffer)
├── IPC (Sockets)
├── Network (TCP/UDP)
└── Serial (UART/SPI)

Code Example

#include <eipc/eipc.h>
#include <eipc/pubsub.h>

void sensor_publisher(void) {
    eipc_node_t *node = eipc_node_create("sensor_hub");
    eipc_publisher_t *pub = eipc_advertise(node,
        "sensor/heartrate", EIPC_MSG_FLOAT32,
        EIPC_QOS_RELIABLE);

    while (1) {
        float hr = read_heart_rate_sensor();
        eipc_publish(pub, &hr, sizeof(hr));
        eos_task_delay_ms(100);
    }
}

API Highlights

Function	Description
`eipc_node_create()`	Create a communication node
`eipc_advertise()`	Create a publisher on a topic
`eipc_subscribe()`	Subscribe to a topic
`eipc_publish()`	Publish a message
`eipc_rpc_call()`	Call a remote procedure

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