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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Felix Arends
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <windows.h>
#include "uisw32.h"
#include "kernel.h"
#include "thread-win32.h"
#include "thread.h"
/* (Daniel 2002-10-31) Mingw32 requires this errno variable to be present.
I'm not quite sure why and I don't know if this breaks the MSVC compile.
If it does, we should put this within #ifdef __MINGW32__ */
int errno;
int set_irq_level (int level)
{
static int _lv = 0;
return (_lv = level);
}
void sleep(int ticks)
{
Sleep (1000 / HZ * ticks);
}
void yield (void)
{
Sleep (1); /* prevent busy loop */
PostThreadMessage (GetWindowThreadProcessId (hGUIWnd,NULL), TM_YIELD, 0, 0);
}
void queue_init(struct event_queue *q)
{
q->read = 0;
q->write = 0;
}
void queue_wait(struct event_queue *q, struct event *ev)
{
while(q->read == q->write)
{
switch_thread();
}
*ev = q->events[(q->read++) & QUEUE_LENGTH_MASK];
}
void queue_wait_w_tmo(struct event_queue *q, struct event *ev, int ticks)
{
unsigned int timeout = current_tick + ticks;
while(q->read == q->write && TIME_BEFORE( current_tick, timeout ))
{
sleep(1);
}
if(q->read != q->write)
{
*ev = q->events[(q->read++) & QUEUE_LENGTH_MASK];
}
else
{
ev->id = SYS_TIMEOUT;
}
}
void queue_post(struct event_queue *q, int id, void *data)
{
int wr;
int oldlevel;
oldlevel = set_irq_level(HIGHEST_IRQ_LEVEL);
wr = (q->write++) & QUEUE_LENGTH_MASK;
q->events[wr].id = id;
q->events[wr].data = data;
set_irq_level(oldlevel);
}
bool queue_empty(struct event_queue* q)
{
return ( q->read == q->write );
}
void switch_thread (void)
{
yield ();
}
/* TODO: Implement mutexes for win32 */
void mutex_init(struct mutex *m)
{
(void)m;
}
void mutex_lock(struct mutex *m)
{
(void)m;
}
void mutex_unlock(struct mutex *m)
{
(void)m;
}
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