void fusion_exit( bool emergency ) { int foo; FusionSendMessage msg; D_ASSERT( fusion_refs > 0 ); /* decrement local reference counter */ if (--fusion_refs) return; if (!emergency) { /* Wake up the read loop thread. */ msg.fusion_id = _fusion_id; msg.msg_id = 0; msg.msg_data = &foo; msg.msg_size = sizeof(foo); while (ioctl( _fusion_fd, FUSION_SEND_MESSAGE, &msg ) < 0) { if (errno != EINTR) { D_PERROR ("FUSION_SEND_MESSAGE"); break; } } /* Wait for its termination. */ direct_thread_join( read_loop ); } direct_thread_destroy( read_loop ); direct_signal_handler_remove( signal_handler ); /* Master has to deinitialize shared data. */ if (_fusion_id == 1) { fusion_skirmish_destroy( &_fusion_shared->reactor_globals ); fusion_skirmish_destroy( &_fusion_shared->arenas_lock ); } _fusion_shared = NULL; /* Deinitialize or leave shared memory. */ __shmalloc_exit( _fusion_id == 1, true ); /* Reset local dispatch nodes. */ _fusion_reactor_free_all(); _fusion_id = 0; if (close( _fusion_fd )) D_PERROR( "Fusion/Exit: closing the fusion device failed!\n" ); _fusion_fd = -1; direct_shutdown(); }
DFBResult dfb_core_destroy( CoreDFB *core, bool emergency ) { D_MAGIC_ASSERT( core, CoreDFB ); D_ASSERT( core->refs > 0 ); D_ASSERT( core == core_dfb ); D_DEBUG_AT( DirectFB_Core, "%s...\n", __FUNCTION__ ); if (!emergency) { pthread_mutex_lock( &core_dfb_lock ); if (--core->refs) { pthread_mutex_unlock( &core_dfb_lock ); return DFB_OK; } } dfb_font_manager_destroy( core->font_manager ); if (core->signal_handler) direct_signal_handler_remove( core->signal_handler ); if (core->cleanup_handler) direct_cleanup_handler_remove( core->cleanup_handler ); if (core->master) { if (emergency) { fusion_kill( core->world, 0, SIGKILL, 1000 ); } else { fusion_kill( core->world, 0, SIGTERM, 5000 ); fusion_kill( core->world, 0, SIGKILL, 2000 ); } } dfb_core_process_cleanups( core, emergency ); while (fusion_arena_exit( core->arena, dfb_core_arena_shutdown, core->master ? NULL : dfb_core_arena_leave, core, emergency, NULL ) == DR_BUSY) { D_ONCE( "waiting for DirectFB slaves to terminate" ); direct_thread_sleep( 100000 ); } fusion_exit( core->world, emergency ); if (!emergency) direct_thread_remove_init_handler( core->init_handler ); D_MAGIC_CLEAR( core ); D_FREE( core ); core_dfb = NULL; if (!emergency) { pthread_mutex_unlock( &core_dfb_lock ); direct_shutdown(); } return DFB_OK; }
DFBResult dfb_core_create( CoreDFB **ret_core ) { int ret; #if FUSION_BUILD_MULTI char buf[16]; #endif CoreDFB *core = NULL; CoreDFBShared *shared = NULL; D_ASSERT( ret_core != NULL ); D_ASSERT( dfb_config != NULL ); D_DEBUG_AT( DirectFB_Core, "%s...\n", __FUNCTION__ ); pthread_mutex_lock( &core_dfb_lock ); D_ASSERT( core_dfb == NULL || core_dfb->refs > 0 ); if (core_dfb) { D_MAGIC_ASSERT( core_dfb, CoreDFB ); core_dfb->refs++; *ret_core = core_dfb; pthread_mutex_unlock( &core_dfb_lock ); return DFB_OK; } direct_initialize(); D_INFO( "DirectFB/Core: %s Application Core. ("BUILDTIME") %s%s\n", FUSION_BUILD_MULTI ? "Multi" : "Single", DIRECT_BUILD_DEBUG ? "[ DEBUG ]" : "", DIRECT_BUILD_TRACE ? "[ TRACE ]" : "" ); #if defined(DFB_DYNAMIC_LINKING) && defined(SOPATH) if (!dfb_lib_handle) #ifdef RTLD_GLOBAL dfb_lib_handle = dlopen(SOPATH, RTLD_GLOBAL|RTLD_LAZY); #else /* RTLD_GLOBAL is not defined on OpenBSD */ dfb_lib_handle = dlopen(SOPATH, RTLD_LAZY); #endif #endif ret = dfb_system_lookup(); if (ret) goto error; /* Allocate local core structure. */ core = D_CALLOC( 1, sizeof(CoreDFB) ); if (!core) { ret = D_OOM(); goto error; } core->refs = 1; core->init_handler = direct_thread_add_init_handler( dfb_core_thread_init_handler, core ); #if FUSION_BUILD_MULTI dfb_system_thread_init(); #endif direct_find_best_memcpy(); D_MAGIC_SET( core, CoreDFB ); core_dfb = core; ret = fusion_enter( dfb_config->session, DIRECTFB_CORE_ABI, FER_ANY, &core->world ); if (ret) goto error; core->fusion_id = fusion_id( core->world ); #if FUSION_BUILD_MULTI D_DEBUG_AT( DirectFB_Core, "world %d, fusion id %d\n", fusion_world_index(core->world), core->fusion_id ); snprintf( buf, sizeof(buf), "%d", fusion_world_index(core->world) ); setenv( "DIRECTFB_SESSION", buf, true ); #endif if (dfb_config->sync) { D_INFO( "DirectFB/Core: calling sync()...\n" ); direct_sync(); } if (dfb_config->core_sighandler) direct_signal_handler_add( DIRECT_SIGNAL_ANY, dfb_core_signal_handler, core, &core->signal_handler ); if (fusion_arena_enter( core->world, "DirectFB/Core", dfb_core_arena_initialize, dfb_core_arena_join, core, &core->arena, &ret ) || ret) { ret = ret ? ret : DFB_FUSION; goto error; } shared = core->shared; D_MAGIC_ASSERT( shared, CoreDFBShared ); if (dfb_config->block_all_signals) direct_signals_block_all(); if (dfb_config->deinit_check) direct_cleanup_handler_add( dfb_core_deinit_check, NULL, &core->cleanup_handler ); fusion_skirmish_prevail( &shared->lock ); if (!core->master) { while (!shared->active) fusion_skirmish_wait( &shared->lock, 0 ); } fusion_skirmish_dismiss( &shared->lock ); dfb_font_manager_create( core, &core->font_manager ); *ret_core = core; pthread_mutex_unlock( &core_dfb_lock ); D_DEBUG_AT( DirectFB_Core, "Core successfully created.\n" ); return DFB_OK; error: if (core) { if (core->world) fusion_exit( core->world, false ); if (core->init_handler) direct_thread_remove_init_handler( core->init_handler ); if (core->signal_handler) direct_signal_handler_remove( core->signal_handler ); D_MAGIC_CLEAR( core ); D_FREE( core ); core_dfb = NULL; } pthread_mutex_unlock( &core_dfb_lock ); direct_shutdown(); return ret; }