:orphan:

.. title:: SYS_HEAP_ALWAYS_BIG_MODE

.. option:: CONFIG_SYS_HEAP_ALWAYS_BIG_MODE

*Always use the heap big chunks mode*

Type: ``bool``

Help
====

The sys_heap allocator by default returns pointers to blocks
which are guaranteed to be aligned to the pointer size.
By enabling the "big chunks" mode, the returned blocks are
guaranteed to be 8 byte aligned, also on 32-bit platforms.
If this option is enabled, the "big chunks" mode will always
be used by sys_heap.

Default
=======

- y

Kconfig definitions
===================

.. highlight:: kconfig

At ``arch/sparc/Kconfig:17``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:29`` → ``arch/Kconfig:12``

Menu path: (Top) → SPARC Options

.. parsed-literal::

    config SYS_HEAP_ALWAYS_BIG_MODE
    	bool
    	default y
    	depends on \ :option:`SPARC <CONFIG_SPARC>`

----

At ``lib/os/Kconfig:49``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:33`` → ``lib/Kconfig:16``

Menu path: (Top) → Additional libraries → OS Support Library

.. parsed-literal::

    config SYS_HEAP_ALWAYS_BIG_MODE
    	bool "Always use the heap big chunks mode"
    	help
    	  The sys_heap allocator by default returns pointers to blocks
    	  which are guaranteed to be aligned to the pointer size.
    	  By enabling the "big chunks" mode, the returned blocks are
    	  guaranteed to be 8 byte aligned, also on 32-bit platforms.
    	  If this option is enabled, the "big chunks" mode will always
    	  be used by sys_heap.

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