[GitHub] [incubator-nuttx] anchao opened a new pull request, #6389: sched/msgq: add support of System V message queue

[GitBox]

anchao opened a new pull request, #6389:
URL: https://github.com/apache/incubator-nuttx/pull/6389

   ## Summary
   
   1. sched/msgq: add support of System V message queue
   
   https://man.openbsd.org/msgget.2
   
   2. libc/ipc: add ftok(3) support
   
   https://man.openbsd.org/ftok.3
   
   3. sys/ipc: correct definition value of IPC_*
   
   the definition of MSG_NOERROR and IPC_NOWAIT should not be aligned
   
   ------------------------------------------------------------------
   
   ```
   MSGOP(2)
   
   NAME
          msgrcv, msgsnd - System V message queue operations
   ...
   EXAMPLE
          The program below demonstrates the use of msgsnd() and msgrcv().
   ...
              if (msgrcv(qid, (void *) &msg, sizeof(msg.mtext), msgtype,
                         MSG_NOERROR | IPC_NOWAIT) == -1) {
   ...
   
   ```
   
   ## Impact
   
   ## Testing
   
   


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