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/*
* Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <errno.h>
#include <gpxe/process.h>
#include <gpxe/async.h>
/** @file
*
* Asynchronous operations
*
*/
/**
* Wait for asynchronous operation to complete
*
* @v aop Asynchronous operation
* @ret rc Return status code
*
* Blocks until the specified asynchronous operation has completed.
* The return status is the return status of the asynchronous
* operation itself.
*/
int async_wait ( struct async_operation *aop ) {
int rc;
/* Wait for operation to complete */
do {
step();
rc = async_status ( aop );
} while ( rc == -EINPROGRESS );
/* Prepare for next call to async_wait() */
async_set_status ( aop, -EINPROGRESS );
return rc;
}
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