ixy_helpers.cpp File Reference

Helper functions adapted from the ixy driver More...

#include <enso/consts.h>
#include <enso/ixy_helpers.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <cstdint>
#include <cstdio>
#include <iostream>
#include <string>

Go to the source code of this file.

Functions
uint64_t	enso::virt_to_phys (void *virt)
void *	enso::get_huge_page (const std::string &path, size_t size=0, bool mirror=false)

Detailed Description

Helper functions adapted from the ixy driver

Definition in file ixy_helpers.cpp.

Function Documentation

get_huge_page()

void * enso::get_huge_page	(	const std::string &	path,
		size_t	size = 0,
		bool	mirror = false
	)

Allocates a huge page and returns a pointer to it.

Huge pages are allocated to be kBufPageSize bytes in size.

Parameters

path	Path to huge page file.
size	The size of the huge page to be allocated. If 0, defaults to kBufPageSize.
mirror	Whether to mirror the huge page or not. Mirroring means that the same page is mapped again right after the allocated memory. This is useful to handle wrap-around in the buffers. Defaults to false.

Returns

A pointer to the allocated huge page.

Definition at line 82 of file ixy_helpers.cpp.

virt_to_phys()

uint64_t enso::virt_to_phys

(

void *

virt

)

Converts a virtual address to a physical address.

Parameters

virt	The virtual address to convert.

Returns

The physical address.

Definition at line 51 of file ixy_helpers.cpp.