public ER ClearEventFlag(FLGPTN setptn)
{
if (setptn.Value == 0)
{
return(ER.E_PAR);
}
m_FlagPattern &= ~setptn;
for (LinkedListNode <Task> node = m_TskQueue.First; node != null; node = node.Next)
{
Task task = node.Value;
if (CheckPattern(task.WaitPattern, task.WaitMode))
{
m_TskQueue.Remove(node);
if (!task.ReleaseWait())
{
return(ER.E_RLWAI);
}
}
}
return(ER.E_OK);
}
private bool CheckPattern(FLGPTN waiptn, MODE wfmode)
{
if ((wfmode & MODE.TWF_ORW) != 0)
{
return((m_FlagPattern & waiptn) != 0);
}
else
{
return((m_FlagPattern & waiptn) == waiptn);
}
}
public ER WaitEventFlag(ref FLGPTN p_flgptn, TMO tmout, FLGPTN waiptn, MODE wfmode)
{
ER ret;
Task task = m_Nucleus.GetTask(ID.TSK_SELF);
if ((tmout != 0) && (task == null))
{
return(ER.E_CTX);
}
//if (p_flgptn == null)
// return ER.E_PAR;
if ((wfmode & ~(MODE.TWF_ANDW | MODE.TWF_ORW | MODE.TWF_CLR)) != 0)
{
return(ER.E_PAR);
}
if ((m_TskQueue.First == null) && CheckPattern(waiptn, wfmode))
{
p_flgptn = m_FlagPattern;
if ((wfmode & MODE.TWF_CLR) != 0)
{
m_FlagPattern = 0;
}
}
else
{
if (task == null)
{
return(ER.E_TMOUT);
}
if (tmout == 0)
{
return(ER.E_TMOUT);
}
task.WaitPattern = waiptn;
task.WaitMode = wfmode;
ret = task.Wait(m_TskQueue, TSKWAIT.TTW_FLG, m_FlgID, tmout);
switch (ret)
{
case ER.E_OK:
p_flgptn = m_FlagPattern;
if (!CheckPattern(waiptn, wfmode))
{
return(ER.E_RLWAI);
}
if ((wfmode & MODE.TWF_CLR) != 0)
{
m_FlagPattern = 0;
}
break;
case ER.E_TMOUT:
return(ER.E_TMOUT);
default:
return(ER.E_RLWAI);
}
}
return(ER.E_OK);
}
public ER clr_flg(ID flgid, FLGPTN clrptn)
{
ER Result = ER.E_NOEXS;
EventFlag EventFlag;
if (g_Kernel == null)
return ER.E_DLT;
g_Kernel.LockCPU();
try {
EventFlag = g_Kernel.Nucleus.GetEventFlag(flgid);
if (EventFlag == null)
Result = ER.E_NOEXS;
else
Result = EventFlag.ClearEventFlag(clrptn);
}
finally {
g_Kernel.UnlockCPU();
}
return Result;
}
public ER wai_flg(ref FLGPTN p_flgptn, ID flgid, FLGPTN waiptn, MODE wfmode)
{
ER Result = ER.E_NOEXS;
EventFlag EventFlag;
if (g_Kernel == null)
return ER.E_DLT;
g_Kernel.LockCPU();
try {
EventFlag = g_Kernel.Nucleus.GetEventFlag(flgid);
if (EventFlag == null)
Result = ER.E_NOEXS;
else
Result = EventFlag.WaitEventFlag(ref p_flgptn, TMO.TMO_FEVR, waiptn, wfmode);
}
finally {
g_Kernel.UnlockCPU();
}
return Result;
}
private bool CheckPattern(FLGPTN waiptn, MODE wfmode)
{
if ((wfmode & MODE.TWF_ORW) != 0)
return (m_FlagPattern & waiptn) != 0;
else
return (m_FlagPattern & waiptn) == waiptn;
}
public ER WaitEventFlag(ref FLGPTN p_flgptn, TMO tmout, FLGPTN waiptn, MODE wfmode)
{
ER ret;
Task task = m_Nucleus.GetTask(ID.TSK_SELF);
if ((tmout != 0) && (task == null))
return ER.E_CTX;
//if (p_flgptn == null)
// return ER.E_PAR;
if ((wfmode & ~(MODE.TWF_ANDW | MODE.TWF_ORW | MODE.TWF_CLR)) != 0)
return ER.E_PAR;
if ((m_TskQueue.First == null) && CheckPattern(waiptn, wfmode)) {
p_flgptn = m_FlagPattern;
if ((wfmode & MODE.TWF_CLR) != 0)
m_FlagPattern = 0;
}
else {
if (task == null)
return ER.E_TMOUT;
if (tmout == 0)
return ER.E_TMOUT;
task.WaitPattern = waiptn;
task.WaitMode = wfmode;
ret = task.Wait(m_TskQueue, TSKWAIT.TTW_FLG, m_FlgID, tmout);
switch (ret) {
case ER.E_OK:
p_flgptn = m_FlagPattern;
if (!CheckPattern(waiptn, wfmode))
return ER.E_RLWAI;
if ((wfmode & MODE.TWF_CLR) != 0)
m_FlagPattern = 0;
break;
case ER.E_TMOUT:
return ER.E_TMOUT;
default:
return ER.E_RLWAI;
}
}
return ER.E_OK;
}
public ER SetEventFlag(FLGPTN setptn)
{
if (setptn.Value == 0)
return ER.E_PAR;
m_FlagPattern |= setptn;
for (LinkedListNode<Task> node = m_TskQueue.First; node != null; node = node.Next) {
Task task = node.Value;
if (CheckPattern(task.WaitPattern, task.WaitMode)) {
m_TskQueue.Remove(node);
if (!task.ReleaseWait())
return ER.E_RLWAI;
}
}
return ER.E_OK;
}