External region APIs

Collaboration diagram for External region APIs:

Typedefs
typedef uint32_t()	memif_get_external_buffer_offset_t(void *private_ctx)
	Get external buffer offset (optional) More...
typedef int()	memif_add_external_region_t(void **addr, uint32_t size, int *fd, void *private_ctx)
	Add external region. More...
typedef void *()	memif_get_external_region_addr_t(uint32_t size, int fd, void *private_ctx)
	Get external region address. More...
typedef int()	memif_del_external_region_t(void *addr, uint32_t size, int fd, void *private_ctx)
	Delete external region. More...

Functions
void	memif_register_external_region (memif_add_external_region_t *ar, memif_get_external_region_addr_t *gr, memif_del_external_region_t *dr, memif_get_external_buffer_offset_t *go)
	Register external region. More...

Detailed Description

Typedef Documentation

memif_add_external_region_t

typedef int() memif_add_external_region_t(void **addr, uint32_t size, int *fd, void *private_ctx)

#include <extras/libmemif/src/libmemif.h>

Add external region.

Parameters

[out]	addr	- region address
	size	- requested region size
	fd[out]	- file descriptor
	private_ctx	- private context

Called by slave. Add external region created by client.

Definition at line 206 of file libmemif.h.

memif_del_external_region_t

typedef int() memif_del_external_region_t(void *addr, uint32_t size, int fd, void *private_ctx)

#include <extras/libmemif/src/libmemif.h>

Delete external region.

Parameters

addr	- region address
size	- region size
fd	- file descriptor
private_ctx	- private context

Delete external region.

Definition at line 229 of file libmemif.h.

memif_get_external_buffer_offset_t

typedef uint32_t() memif_get_external_buffer_offset_t(void *private_ctx)

#include <extras/libmemif/src/libmemif.h>

Get external buffer offset (optional)

Parameters

private_ctx

- private context

Find unallocated external buffer and return its offset.

Definition at line 196 of file libmemif.h.

memif_get_external_region_addr_t

typedef void*() memif_get_external_region_addr_t(uint32_t size, int fd, void *private_ctx)

#include <extras/libmemif/src/libmemif.h>

Get external region address.

Parameters

size	- requested region size
fd	- file descriptor
private_ctx	- private context

Called by master. Get region address from client.

Returns

region address

Definition at line 218 of file libmemif.h.

Function Documentation

memif_register_external_region()

void memif_register_external_region	(	memif_add_external_region_t *	ar,
		memif_get_external_region_addr_t *	gr,
		memif_del_external_region_t *	dr,
		memif_get_external_buffer_offset_t *	go
	)

#include <extras/libmemif/src/libmemif.h>

Register external region.

Parameters

ar	- add external region callback
gr	- get external region addr callback
dr	- delete external region callback
go	- get external buffer offset callback (optional)

Definition at line 431 of file main.c.

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