Bases: enum.Enum
Commands sent between an application and the monitor processor
Attributes
| SHM_CMD | The mailbox contains a command |
| SHM_IDLE | The mailbox is idle |
| SHM_MSG | The mailbox contains an SDP message |
| SHM_NOP | The mailbox contains a non-operation |
| SHM_SIGNAL | The mailbox contains a signal |