470989bd70
add_event_ex is added that takes an extra user_data pointer. This pointer is passed to the callback (add_event and add_event_ex have slightly different callbacks types). All callbacks also get the event id passed. Events added with add_event_ex must be removed with remove_event_ex because the user_data pointer must match in addition to the callback pointer. On the other add_event is simplified to omit the oneshort parameter which was almost always false (still there with add_event_ex). As a side effect the ata_idle_notify callbacks are changed as well, they do not take a data parameter anymore which was always NULL anyway. This commit also adds some documentation to events.h Change-Id: I13e29a0f88ef908f175b376d83550f9e0231f772
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006 Jonathan Gordon
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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
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdbool.h>
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#include "system.h"
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#include "ata.h"
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#include "ata_idle_notify.h"
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#include "kernel.h"
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#include "string.h"
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static void wrapper(unsigned short id, void *ev_data, void *user_data)
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{
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(void)id;
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(void)ev_data;
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void (*func)(void) = user_data;
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func();
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}
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void register_storage_idle_func(void (*function)(void))
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{
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#if USING_STORAGE_CALLBACK
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add_event_ex(DISK_EVENT_SPINUP, true, wrapper, function);
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#else
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function(); /* just call the function now */
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/* this _may_ cause problems later if the calling function
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sets a variable expecting the callback to unset it, because
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the callback will be run before this function exits, so before the var is set */
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#endif
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}
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#if USING_STORAGE_CALLBACK
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void unregister_storage_idle_func(void (*func)(void), bool run)
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{
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remove_event_ex(DISK_EVENT_SPINUP, wrapper, func);
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if (run)
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func();
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}
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bool call_storage_idle_notifys(bool force)
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{
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static int lock_until = 0;
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if (!force)
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{
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if (TIME_BEFORE(current_tick,lock_until) )
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return false;
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}
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lock_until = current_tick + 30*HZ;
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send_event(DISK_EVENT_SPINUP, NULL);
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return true;
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}
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#endif
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