From 7fe60435bce6595a9c58a9bfd8244d74b5320e96 Mon Sep 17 00:00:00 2001 From: Benjamin Franzke Date: Tue, 15 Jan 2013 08:46:13 +0100 Subject: Import DirectFB141_2k11R3_beta5 --- Source/DirectFB/lib/fusion/property.h | 114 ++++++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100755 Source/DirectFB/lib/fusion/property.h (limited to 'Source/DirectFB/lib/fusion/property.h') diff --git a/Source/DirectFB/lib/fusion/property.h b/Source/DirectFB/lib/fusion/property.h new file mode 100755 index 0000000..74e3d1f --- /dev/null +++ b/Source/DirectFB/lib/fusion/property.h @@ -0,0 +1,114 @@ +/* + (c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org) + (c) Copyright 2000-2004 Convergence (integrated media) GmbH + + All rights reserved. + + Written by Denis Oliver Kropp , + Andreas Hundt , + Sven Neumann , + Ville Syrjälä and + Claudio Ciccani . + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#ifndef __FUSION__PROPERTY_H__ +#define __FUSION__PROPERTY_H__ + +#include + +#include + +typedef enum { + FUSION_PROPERTY_AVAILABLE, + FUSION_PROPERTY_LEASED, + FUSION_PROPERTY_PURCHASED +} FusionPropertyState; + + +typedef union { + /* multi app */ + struct { + int id; + const FusionWorldShared *shared; + /* builtin impl */ + struct { + FusionPropertyState state; + pid_t owner; + bool requested; + bool destroyed; + } builtin; + } multi; + + /* single app */ + struct { + pthread_mutex_t lock; + pthread_cond_t cond; + FusionPropertyState state; + } single; +} FusionProperty; + +/* + * Initializes the property + */ +DirectResult fusion_property_init (FusionProperty *property, + const FusionWorld *world); + +/* + * Lease the property causing others to wait before leasing or purchasing. + * + * Waits as long as property is leased by another party. + * Returns DR_BUSY if property is/gets purchased by another party. + * + * Succeeds if property is available, + * puts the property into 'leased' state. + */ +DirectResult fusion_property_lease (FusionProperty *property); + +/* + * Purchase the property disallowing others to lease or purchase it. + * + * Waits as long as property is leased by another party. + * Returns DR_BUSY if property is/gets purchased by another party. + * + * Succeeds if property is available, + * puts the property into 'purchased' state and wakes up any waiting party. + */ +DirectResult fusion_property_purchase (FusionProperty *property); + +/* + * Cede the property allowing others to lease or purchase it. + * + * Puts the property into 'available' state and wakes up one waiting party. + */ +DirectResult fusion_property_cede (FusionProperty *property); + +/* + * Kills the owner of the property. + * + * Tries to make a purchased property available again by killing + * the process that purchased it. + */ +DirectResult fusion_property_holdup (FusionProperty *property); + +/* + * Destroys the property + */ +DirectResult fusion_property_destroy (FusionProperty *property); + +#endif + -- cgit