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