90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/* WinRT Windows.Gaming.Input implementation
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*
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* Copyright 2022 Rémi Bernon for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "private.h"
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static CRITICAL_SECTION handlers_cs;
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static CRITICAL_SECTION_DEBUG handlers_cs_debug =
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{
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0, 0, &handlers_cs,
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{ &handlers_cs_debug.ProcessLocksList, &handlers_cs_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": handlers_cs") }
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};
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static CRITICAL_SECTION handlers_cs = { &handlers_cs_debug, -1, 0, 0, 0, 0 };
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static EventRegistrationToken next_token = {.value = 1};
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struct handler_entry
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{
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struct list entry;
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EventRegistrationToken token;
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IEventHandler_IInspectable *handler;
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};
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HRESULT event_handlers_append( struct list *list, IEventHandler_IInspectable *handler, EventRegistrationToken *token )
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{
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struct handler_entry *entry;
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if (!(entry = calloc( 1, sizeof(*entry) ))) return E_OUTOFMEMORY;
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IEventHandler_IInspectable_AddRef( (entry->handler = handler) );
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EnterCriticalSection( &handlers_cs );
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*token = entry->token = next_token;
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next_token.value++;
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list_add_tail( list, &entry->entry );
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LeaveCriticalSection( &handlers_cs );
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return S_OK;
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}
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HRESULT event_handlers_remove( struct list *list, EventRegistrationToken *token )
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{
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struct handler_entry *entry;
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BOOL found = FALSE;
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EnterCriticalSection( &handlers_cs );
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LIST_FOR_EACH_ENTRY( entry, list, struct handler_entry, entry )
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if ((found = !memcmp( &entry->token, token, sizeof(*token) ))) break;
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if (found) list_remove( &entry->entry );
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LeaveCriticalSection( &handlers_cs );
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if (found)
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{
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IEventHandler_IInspectable_Release( entry->handler );
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free( entry );
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}
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return S_OK;
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}
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void event_handlers_notify( struct list *list, IInspectable *element )
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{
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struct handler_entry *entry;
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EnterCriticalSection( &handlers_cs );
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LIST_FOR_EACH_ENTRY( entry, list, struct handler_entry, entry )
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IEventHandler_IInspectable_Invoke( entry->handler, NULL, element );
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LeaveCriticalSection( &handlers_cs );
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}
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