src/xcalls/x_read.c File Reference

x_read implementation. More...

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

Go to the source code of this file.

Classes
struct	x_read_undo_args_s
Typedefs
typedef x_read_undo_args_s	x_read_undo_args_t
Functions
ssize_t XCALL_DEF()	x_read (int fd, void *buf, size_t nbyte, int *result)
	Reads from a file.

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Detailed Description

x_read implementation.

Definition in file x_read.c.

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Function Documentation

ssize_t XCALL_DEF() x_read	(	int	fd,
		void *	buf,
		size_t	nbyte,
		int *	result
	)

Reads from a file.

Execution : in-place

Asynchronous failures : abort

Parameters:

[in]	fd	The file descriptor of the file to read from.
[in]	buf	The buffer where to store read data.
[in]	nbyte	The number of bytes to read.
[out]	result	Where to store any asynchronous failures.

Returns:

The number of read bytes on success, or -1 if a synchronous failure occurred (in which case, errno is set appropriately).

Definition at line 65 of file x_read.c.

References x_read_undo_args_s::fd, x_read_undo_args_s::nbyte, txc_buffer_linear_free(), txc_buffer_linear_malloc(), txc_g_koamgr, TXC_INTERNALERROR, txc_koa_get_sentinel(), txc_koa_lock_fd(), txc_koa_lookup_fd2koa(), txc_koa_unlock_fd(), TXC_R_BUSYSENTINEL, TXC_R_FAILURE, TXC_SENTINEL_ACQUIREONRETRY, txc_sentinel_tryacquire(), txc_stats_txstat_increment, txc_tx_abort_transaction(), txc_tx_get_txd(), txc_tx_get_xactstate(), txc_tx_register_undo_action(), TXC_TX_REGULAR_UNDO_ACTION_ORDER, and x_read().

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