Kumem utiltities

Collaboration diagram for Kumem utiltities:

Functions
int	L4Re::Util::kumem_alloc (l4_addr_t *mem, unsigned pages_order, L4::Cap< L4::Task > task=L4Re::Env::env() ->task(), L4::Cap< L4Re::Rm > rm=L4Re::Env::env() ->rm()) noexcept
	Allocate state area.

Detailed Description

Function Documentation

kumem_alloc()

int L4Re::Util::kumem_alloc ( l4_addr_t * mem, unsigned pages_order, L4::Cap< L4::Task > task = L4Re::Env::env() ->task(), L4::Cap< L4Re::Rm > rm = L4Re::Env::env() ->rm() )

noexcept

Allocate state area.

Parameters

[out]	mem	Pointer to memory that has been allocated.
	pages_order	Size to allocate, in log2 pages.
	task	Task to use for allocation.
	rm	Region manager to use for allocation.

Return values

0	for success
<0	error code on failure

Note

The amount of kernel-user memory that can be allocated at once is limited by the used kernel implementation. The minimum allocatable amount is one page. A portable implementation should not depend on allocations greater than 16KiB to succeed.

References L4Re::Env::env().

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