Re: Best (simplest) way to share data between processes

Chris Green <cl@isbd.net> wrote or quoted:

Would a mutex of some sort around each I2C transaction (i.e. complete
A2D reading) be a better way to go?

  I not an expert here, but from what I heard, you could use
  a named POSIX semaphore as a kind of system-wide mutex.

  Or, the single process reading the A2D values could write
  them to a shared memory segment the access to which is
  controlled by a mutex.

  Or, you could use a message queue (like POSIX mq) to
  distribute readings.

  But why overengineer? If you feel comfortable with the file
  solution, go for it! The only drawback might be that it's a
  bit slower than other approaches.