[Overview][Constants][Types][Procedures and functions][Index] Reference for unit 'ipc' (#rtl)

Reference for unit 'ipc': Constants

IPC_CREAT

  

Create if key is nonexistent

IPC_EXCL

  

fail if key exists

IPC_INFO

  

For ipcs call

IPC_NOWAIT

  

return error on wait

IPC_RMID

  

Remove resource

IPC_SET

  

set ipc_perm options

IPC_STAT

  

get ipc_perm options

MAX_SOPS

  

MSG_NOERROR

  

Internal Message control code. Do not use

SEM_A

  

Alter permission

SEM_GETALL

  

Semaphore operation: Get all semaphore values

SEM_GETNCNT

  

Semaphore operation: Get number of processes waiting for resource.

SEM_GETPID

  

Semaphore operation: Get process ID of last operation.

SEM_GETVAL

  

Semaphore operation: Get current value of semaphore

SEM_GETZCNT

  

Semaphore operation: Get number of processes waiting for semaphores to reach zero

SEM_R

  

Read permission

SEM_SETALL

  

Semaphore operation: Set all semaphore values

SEM_SETVAL

  

Semaphore operation: Set semaphore value

SEM_UNDO

  

Constant for use in semop

SHM_LOCK

  

This constant is used in the shmctl call.

SHM_R

  

This constant is used in the shmctl call.

SHM_RDONLY

  

This constant is used in the shmctl call.

SHM_RND

  

This constant is used in the shmctl call.

SHM_UNLOCK

  

This constant is used in the shmctl call.

SHM_W

  

This constant is used in the shmctl call.


Documentation generated on: Jun 23 2021