root / Whitix / branches / hybrid / kernel / wait.c

/*  This file is part of Whitix.
 *
 *  Whitix is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  Whitix 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Whitix; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include <module.h>
#include <sched.h>
#include <task.h>
#include <wait.h>

/***********************************************************************
 *
 * FUNCTION: WakeUp
 *
 * DESCRIPTION: Wake up all threads waiting on a waitqueue.
 *
 * PARAMETERS: waitQueue - wait queue in question.
 *
 * RETURNS: Nothing.
 *
 ***********************************************************************/

void WakeUp(WaitQueue* waitQueue)
{
        struct WaitQueueEntry* curr, *curr2;

        /* No point if it's empty */
        if (ListEmpty(&waitQueue->list))
                return;

        SpinLockIrq(&waitQueue->spinLock);

        ListForEachEntrySafe(curr, curr2, &(waitQueue->list),next)
        {
#ifdef WAIT_DEBUG
                if (curr->magic != 0xDEADBEEF)          
                        printf("WakeUp: Error, %#X!, thread = %#X, prev = %#X, next = %#X, magic = %#X, from %#X\n",
                                waitQueue,curr->thread,curr->next.prev,curr->next.next,curr->magic,__builtin_return_address(0));
#endif

                ThrResumeThread(curr->thread);
                ListRemoveInit(&curr->next);
        }

        ListRemoveInit(&waitQueue->list);
        SpinUnlockIrq(&waitQueue->spinLock);
}

SYMBOL_EXPORT(WakeUp);