/usr/include/directfb/fusion/fusion_internal.h is in libdirectfb-dev 1.7.7-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(c) Copyright 2012-2013 DirectFB integrated media GmbH
(c) Copyright 2001-2013 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 <dok@directfb.org>,
Andreas Shimokawa <andi@directfb.org>,
Marek Pikarski <mass@directfb.org>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
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__FUSION_INTERNAL_H__
#define __FUSION__FUSION_INTERNAL_H__
#include <sys/types.h>
//#include <sys/param.h>
#include <string.h>
#include <direct/hash.h>
#include <direct/list.h>
#include <fusion/build.h>
#include <fusion/fusion.h>
#include <fusion/lock.h>
#include <fusion/ref.h>
#include <fusion/shm/shm_internal.h>
#if FUSION_BUILD_MULTI
# if FUSION_BUILD_KERNEL
# include <sys/ioctl.h>
# include <linux/fusion.h>
# else
# include <fusion/protocol.h>
# endif
#endif
#define FUSION_MAX_WORLDS 32
#define EXECUTE3_BIN_FLUSH_MILLIS 16
/***************************************
* Fusion internal type declarations *
***************************************/
struct __Fusion_FusionWorldShared {
int magic;
int refs; /* Increased by the master on fork(). */
int world_index;
int world_abi;
long long start_time;
DirectLink *arenas;
FusionSkirmish arenas_lock;
FusionSkirmish reactor_globals;
FusionSHMShared shm;
FusionSHMPoolShared *main_pool;
DirectLink *fusionees; /* Connected fusionees. */
FusionSkirmish fusionees_lock;
unsigned int call_ids; /* Generates call ids. */
unsigned int lock_ids; /* Generates locks ids. */
unsigned int ref_ids; /* Generates refs ids. */
unsigned int reactor_ids; /* Generates reactors ids. */
unsigned int pool_ids; /* Generates pools ids. */
void *pool_base; /* SHM pool allocation base. */
void *pool_max; /* SHM pool max address. */
void *world_root;
FusionWorld *world;
FusionCall refs_call;
FusionHash *call_hash;
};
#if !FUSION_BUILD_MULTI
#include "reactor.h"
#define EVENT_DISPATCHER_BUFFER_LENGTH (FUSION_CALL_MAX_LENGTH)
typedef struct {
DirectLink link;
int magic;
char buffer[FUSION_CALL_MAX_LENGTH];
int read_pos;
int write_pos;
int can_free;
int sync_calls;
int pending;
} FusionEventDispatcherBuffer;
typedef struct
{
int reaction;
FusionCallHandler call_handler;
FusionCallHandler3 call_handler3;
void *call_ctx;
FusionCallExecFlags flags;
int call_arg;
void *ptr;
unsigned int length;
int ret_val;
void *ret_ptr;
unsigned int ret_size;
unsigned int ret_length;
int processed;
} FusionEventDispatcherCall;
//pass fusion calls to single-app dispatcher thread
DirectResult _fusion_event_dispatcher_process( FusionWorld *world, const FusionEventDispatcherCall *call, FusionEventDispatcherCall **ret );
DirectResult _fusion_event_dispatcher_process_reactions( FusionWorld *world, FusionReactor *reactor, int channel, void *msg_data, int msg_size );
DirectResult _fusion_event_dispatcher_process_reactor_free( FusionWorld *world, FusionReactor *reactor );
#endif /* !FUSION_BUILD_MULTI */
struct __Fusion_FusionWorld {
int magic;
int refs;
FusionWorldShared *shared;
int fusion_fd;
FusionID fusion_id;
DirectThread *dispatch_loop;
bool dispatch_stop;
/*
* List of reactors with at least one local reaction attached.
*/
DirectLink *reactor_nodes;
DirectMutex reactor_nodes_lock;
FusionSHM shm;
FusionForkAction fork_action;
FusionForkCallback fork_callback;
void *fusionee;
struct {
DirectThread *thread;
pthread_cond_t queue;
pthread_mutex_t lock;
DirectLink *list;
} deferred;
FusionLeaveCallback leave_callback;
void *leave_ctx;
DirectLink *dispatch_cleanups;
DirectMutex refs_lock;
DirectMap *refs_map;
#if !FUSION_BUILD_MULTI
DirectThread *event_dispatcher_thread;
DirectMutex event_dispatcher_mutex;
DirectWaitQueue event_dispatcher_cond;
DirectWaitQueue event_dispatcher_process_cond;
DirectLink *event_dispatcher_buffers;
DirectLink *event_dispatcher_buffers_remove;
DirectMutex event_dispatcher_call_mutex;
DirectWaitQueue event_dispatcher_call_cond;
#endif
};
#if FUSION_BUILD_MULTI
# if FUSION_BUILD_KERNEL
typedef struct {
DirectLink link;
FusionReadMessage header;
/* message data follows */
} DeferredCall;
# endif
#endif
typedef struct {
FusionID fusion_id;
int ref_id;
} FusionRefSlaveKey;
typedef struct {
FusionRefSlaveKey key;
int refs;
FusionRef *ref;
} FusionRefSlaveEntry;
typedef struct {
int ref_id;
int refs_catch;
int refs_local;
} FusionRefSlaveSlaveEntry;
/*******************************************
* Fusion internal function declarations *
*******************************************/
int _fusion_fd( const FusionWorldShared *shared );
FusionID _fusion_id( const FusionWorldShared *shared );
FusionWorld *_fusion_world( const FusionWorldShared *shared );
/*
* from reactor.c
*/
void _fusion_reactor_free_all ( FusionWorld *world );
void _fusion_reactor_process_message( FusionWorld *world,
int reactor_id,
int channel,
const void *msg_data );
#if FUSION_BUILD_MULTI
# if FUSION_BUILD_KERNEL
static __inline__ void
fusion_entry_add_permissions( const FusionWorld *world,
FusionType type,
int entry_id,
FusionID fusion_id,
... )
{
FusionEntryPermissions permissions;
va_list args;
int arg;
permissions.type = type;
permissions.id = entry_id;
permissions.fusion_id = fusion_id;
permissions.permissions = 0;
va_start( args, fusion_id );
while ((arg = va_arg( args, int )) != 0)
FUSION_ENTRY_PERMISSIONS_ADD( permissions.permissions, arg );
va_end( args );
while (ioctl( world->fusion_fd, FUSION_ENTRY_ADD_PERMISSIONS, &permissions ) < 0) {
if (errno != EINTR) {
D_PERROR( "Fusion: FUSION_ENTRY_ADD_PERMISSIONS( type %d, id %d ) failed!\n", type, entry_id );
break;
}
}
}
# endif
#endif
#if FUSION_BUILD_MULTI
/*
* from call.c
*/
void _fusion_call_process ( FusionWorld *world,
int call_id,
FusionCallMessage *call,
void *ptr );
#if FUSION_BUILD_KERNEL
void _fusion_call_process3( FusionWorld *world,
int call_id,
FusionCallMessage3 *msg,
void *ptr );
/*
* from shm.c
*/
void _fusion_shmpool_process( FusionWorld *world,
int pool_id,
FusionSHMPoolMessage *msg );
#else
/*
* form fusion.c
*/
void _fusion_add_local( FusionWorld *world,
FusionRef *ref,
int add );
void _fusion_check_locals( FusionWorld *world,
FusionRef *ref );
void _fusion_remove_all_locals( FusionWorld *world,
const FusionRef *ref );
DirectResult _fusion_send_message( int fd,
const void *msg,
size_t msg_size,
struct sockaddr_un *addr );
DirectResult _fusion_recv_message( int fd,
void *msg,
size_t msg_size,
struct sockaddr_un *addr );
/*
* from ref.c
*/
DirectResult _fusion_ref_change( FusionRef *ref, int add, bool global );
#endif /* FUSION_BUILD_KERNEL */
#endif /* FUSION_BUILD_MULTI */
#endif
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