:orphan:

.. title:: NUM_MBOX_ASYNC_MSGS

.. option:: CONFIG_NUM_MBOX_ASYNC_MSGS

*Maximum number of in-flight asynchronous mailbox messages*

Type: ``int``

Help
====

This option specifies the total number of asynchronous mailbox
messages that can exist simultaneously, across all mailboxes
in the system.

Setting this option to 0 disables support for asynchronous
mailbox messages.

Default
=======

- 10

Kconfig definition
==================

.. highlight:: kconfig

At ``kernel/Kconfig:474``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:30``

Menu path: (Top) → General Kernel Options → Other Kernel Object Options

.. parsed-literal::

    config NUM_MBOX_ASYNC_MSGS
    	int "Maximum number of in-flight asynchronous mailbox messages"
    	default 10
    	help
    	  This option specifies the total number of asynchronous mailbox
    	  messages that can exist simultaneously, across all mailboxes
    	  in the system.
	  
    	  Setting this option to 0 disables support for asynchronous
    	  mailbox messages.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*