src/xcalls/x_recvmsg.c File Reference

x_recvmsg implementation. More...

#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <misc/debug.h>
#include <misc/generic_types.h>
#include <core/tx.h>
#include <core/config.h>
#include <core/koa.h>
#include <core/buffer.h>
#include <libc/syscalls.h>
#include <core/txdesc.h>
#include <core/stats.h>
#include <xcalls/xcalls.h>
#include <netinet/in.h>

Go to the source code of this file.

Classes
struct	txc_socket_msghdr_s
struct	x_recvmsg_commit_undo_args_s
Defines
#define	TXC_DGRAM_MAX_SIZE   1024*64
#define	TXC_CONTROLMSG_MAX_SIZE   1024*2
Typedefs
typedef txc_socket_msghdr_s	txc_socket_msghdr_t
typedef x_recvmsg_commit_undo_args_s	x_recvmsg_commit_undo_args_t
Functions
ssize_t XCALL_DEF()	x_recvmsg (int s, struct msghdr *msg, int flags, int *result)
	Receives a message from a socket.

---

Detailed Description

x_recvmsg implementation.

Definition in file x_recvmsg.c.

---

Function Documentation

ssize_t XCALL_DEF() x_recvmsg	(	int	s,
		struct msghdr *	msg,
		int	flags,
		int *	result
	)

Receives a message from a socket.

This xCall buffers any received data so that in case of transaction abort received data are not consumed but stay present for the next socket receive.

Execution : in-place

Asynchronous failures : commit, abort

Parameters:

[in]	fd	The file descriptor of the socket.
[in]	msg	Where to store the received message.
[in]	flags	See man recvmsg.
[out]	result	Where to store any asynchronous failures. failure occurred (in which case, errno is set appropriately).

Todo:

Find which flags of recvmsg can be used with x_recvmsg?

Definition at line 341 of file x_recvmsg.c.

References TXC_INTERNALERROR, txc_tx_get_txd(), and txc_tx_get_xactstate().

---