/*
Use the state returned by ReadCurrentState and check that the state was not changed during the read operation.
The operation is lock-free since there is no intermediate state in the write operation that could cause the
read to loop forever.
*/
void JackFrameTimer::ReadFrameTime(JackTimer* timer)
{
UInt16 next_index = GetCurrentIndex();
UInt16 cur_index;
do {
cur_index = next_index;
memcpy(timer, ReadCurrentState(), sizeof(JackTimer));
next_index = GetCurrentIndex();
} while (cur_index != next_index); // Until a coherent state has been read
}
// Client
void JackTransportEngine::ReadCurrentPos(jack_position_t* pos)
{
UInt16 next_index = GetCurrentIndex();
UInt16 cur_index;
do {
cur_index = next_index;
memcpy(pos, ReadCurrentState(), sizeof(jack_position_t));
next_index = GetCurrentIndex();
} while (cur_index != next_index); // Until a coherent state has been read
}
void
TaskMiscPanel::ReClick()
{
if (GetCurrentIndex() > 0)
SetCurrent(0);
else
PagerWidget::ReClick();
}
static void UpdatePos(DmOpenRef db)
{
FormPtr form = FrmGetActiveForm();
if (FormIsNot(form, FormMain)) return;
char posbuf[20];
StrPrintF(posbuf, "%d/%d", GetCurrentIndex() + 1,
(UInt16) GetSMSCount(db, g_SelectedCategory));
FrmCopyLabel(form, LabelPosition, posbuf);
}
void SelectPackageDlg::ListCursor()
{
int c = GetCurrentIndex();
if(c >= 0 && c < packages.GetCount()) {
String pp = PackagePath(GetCurrentName());
Package pkg;
pkg.Load(pp);
description <<= pkg.description;
}
else
description <<= Null;
}
static Err ReplyCurrentRecord(DmOpenRef db)
{
FormPtr form = FrmGetActiveForm();
if (FormIsNot(form, FormReply)) return frmErrNotTheForm;
MemHandle memHandle = 0;
SMSDbRecordType smsRecord;
Err err = GetSMSRecord(db, g_SelectedCategory, GetCurrentIndex(),
smsRecord, memHandle, true);
RETURN_ERR_ON_ERR(err);
CheckNullPointer(memHandle);
SetFieldText((FieldPtr) GetObjectPtr(form, FieldTo), smsRecord.phoneNumber);
SetFieldText((FieldPtr) GetObjectPtr(form, FieldReference), smsRecord.content);
FrmSetFocus(form, FrmGetObjectIndex(form, FieldCompose));
MemHandleUnlock(memHandle);
return errNone;
}
void SelectPackageDlg::ChangeDescription()
{
int ii = GetCurrentIndex();
if(ii >= 0 && ii < packages.GetCount()) {
PkInfo& p = packages[ii];
WithDescriptionLayout<TopWindow> dlg;
CtrlLayoutOKCancel(dlg, "Package description");
String pp = PackagePath(p.package);
Package pkg;
if(!pkg.Load(pp)) {
Exclamation("Package does not exist.");
return;
}
dlg.text <<= pkg.description;
if(dlg.Run() != IDOK)
return;
pkg.description = ~dlg.text;
pkg.Save(pp);
p.description = description <<= ~dlg.text;
if(alist.IsCursor())
alist.Set(2, ~dlg.text);
}
}
void DeleteCurrentRecord(DmOpenRef db)
{
DeleteRecordInCategory(db, GetCurrentIndex(), g_SelectedCategory);
}
void SetCurrentRecordCategory(DmOpenRef db, Int16 category)
{
MoveRecordCategory(db, GetCurrentIndex(), g_SelectedCategory, category);
}
Err DisplayCurrentRecord(DmOpenRef db)
{
return DisplayRecord(db, g_SelectedCategory, GetCurrentIndex());
}
