1. Interprocess Communication (Low-level APIs)

1. Environment

• POSIX : Linux 5.15.0-1079-azure
• Mach-message-passing : MacOS

2. How to use

2.1 POSIX Shared Memory

gcc producer.c -o producer -lrt
gcc consumer.c -o consumer -lrt

• shm_open is part of the POSIX shared memory API, which requires linking with the real-time library (librt) on Linux.
• By default, gcc does not automatically link against librt, so you must explicitly specify -lrt.

cd /dev/shm/

• you can check the Shared memory file named "OS"

2.2 Mach Message Passing

[[https://docs.darlinghq.org/internals/macos-specifics/mach-ports.html]]

gcc server.c -o server
gcc client.c -o client