The Socket Inter-process Communication (IPC) sample demonstrates simple IPC functionalities using network sockets.
The command line for the sample is:
./sample_socket_ipc_clientserver --role=[client|server]
--ip=[address]
--port=[port]
where
--role=[client|server]
Is either "client" or "server" (required).
Default value: client
--ip=[address]
Is the server IP the client connects to (optional).
Default value: 127.0.0.1
--port=[port]
Is the port the server will listen on / the client will connect to (optional).
Default value: 49252
Two instances of the sample are required. The server instance has to be started first.
./sample_socket_ipc_clientserver --role=server --port=49252 ./sample_socket_ipc_clientserver --role=client --port=49252 --ip=127.0.0.1
In the sample the client generates random values, sends them to the server, who echoes them back.
Server:
nvidia@tegra-ubuntu:/usr/local/driveworks/bin$ ./sample_socket_ipc_clientserver --role=server Program Arguments: --ip=127.0.0.1 --port=49252 --role=server [9-8-2018 16:16:56] Initialize DriveWorks SDK v1.2.227 [9-8-2018 16:16:56] Release build with GNU 4.9.4 from v1.2.0-rc6-0-g79beb2a against Vibrante PDK v5.0.10.3 [9-8-2018 16:16:56] Platform: Detected Drive PX2 - Tegra A [9-8-2018 16:16:56] TimeSource: monotonic epoch time offset is 1533299678306576 [9-8-2018 16:16:56] TimeSource: PTP ioctl returned error. Synchronized time will not be available. [9-8-2018 16:16:56] TimeSource: Could not detect valid PTP time source at 'eth0'. Fallback to CLOCK_MONOTONIC. [9-8-2018 16:16:56] Platform: number of GPU devices detected 2 [9-8-2018 16:16:56] Platform: currently selected GPU device discrete ID 0 [9-8-2018 16:16:56] SDK: Resources mounted from /usr/local/driveworks/data/resources [9-8-2018 16:16:56] SDK: Create NvMediaDevice [9-8-2018 16:16:56] SDK: Create NvMediaIPPManager [9-8-2018 16:16:56] egl::Display: found 2 EGL devices [9-8-2018 16:16:56] egl::Display: use drm device: drm-nvdc [9-8-2018 16:16:56] SocketServer: listening on 49252 [9-8-2018 16:16:58] SocketServer: accepted 127.0.0.1:40020 [9-8-2018 16:16:58] SocketServer: accepted 127.0.0.1:40022 Socket Server received 1 Socket Server send 1 Socket Server received 2 Socket Server send 2 Socket Server received 3 Socket Server send 3 Socket Server received 4 Socket Server send 4 Socket Server received 5 Socket Server send 5 [9-8-2018 16:17:2] Driveworks SDK released
Client:
nvidia@tegra-ubuntu:/usr/local/driveworks/bin$ ./sample_socket_ipc_clientserver --role=client Program Arguments: --ip=127.0.0.1 --port=49252 --role=client [9-8-2018 16:16:58] Initialize DriveWorks SDK v1.2.227 [9-8-2018 16:16:58] Release build with GNU 4.9.4 from v1.2.0-rc6-0-g79beb2a against Vibrante PDK v5.0.10.30 [9-8-2018 16:16:58] Platform: Detected Drive PX2 - Tegra A [9-8-2018 16:16:56] TimeSource: monotonic epoch time offset is 1533299678306576 [9-8-2018 16:16:56] TimeSource: PTP ioctl returned error. Synchronized time will not be available. [9-8-2018 16:16:56] TimeSource: Could not detect valid PTP time source at 'eth0'. Fallback to CLOCK_MONOTONIC. [9-8-2018 16:16:56] Platform: number of GPU devices detected 2 [9-8-2018 16:16:56] Platform: currently selected GPU device discrete ID 0 [9-8-2018 16:16:56] SDK: Resources mounted from /usr/local/driveworks/data/resources [9-8-2018 16:16:56] SDK: Create NvMediaDevice [9-8-2018 16:16:56] SDK: Create NvMediaIPPManager [9-8-2018 16:16:56] egl::Display: found 2 EGL devices [9-8-2018 16:16:56] egl::Display: use drm device: drm-nvdc [9-8-2018 16:16:58] SocketClient: connected 127.0.0.1:49252 [9-8-2018 16:16:58] SocketClient: connected 127.0.0.1:49252 Socket Client send 1 Socket Client received 1 Socket Client send 2 Socket Client received 2 Socket Client send 3 Socket Client received 3 Socket Client send 4 Socket Client received 4 Socket Client send 5 ^CSocket Client received 5 [9-8-2018 16:17:2] Driveworks SDK released
For more details see IPC .