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{}
const
ACF_ASSIGNED = $80000000; // Task assigned
ACF_DISABLED = $10000000; // Task disabled
TCF_ABSOLUTE = $00000001;
TCF_IMMEDIATELY = $00000002;
TCF_NONZEROBREAK = $00000004;
TCF_MAKEEVENT = $00000008;
TCF_EVENTONCE = $00000010;
const
WM_RESETTASKS = WM_USER+1312;
WM_FIRSTTASK = WM_USER+1313;
WM_LASTTASK = WM_FIRSTTASK+1000;
type
pTaskRec = ^tTaskRec;
tTaskRec = record
// option values
flags :dword;
name :PWideChar; // name for task
action :dword; // assigned action
intdays, // interval,days
dayoffset :integer; //!! offset, days
starttime, // task starttime
interval :TFileTime; // interval for repeat
count :integer; // repeat count
// support values
lastcall :TFileTime; // last timer event time
nextcall :TFileTime; // ?? next start time?
// runtime values
timer :uint_ptr; // timer handle
curcount :integer; // repeat count
inprocess :bool; // starting processing
inaction :bool; // timer event processing
end;
pTaskList = ^tTaskList;
tTaskList = array [0..1023] of tTaskRec;
var
TaskList:pTaskList = nil;
MaxTasks:integer = 0;
procedure TimerProc(wnd:HWND;uMsg:uint;idEvent:uint_ptr;dwTime:dword); stdcall;
var
ltime:uint;
i:integer;
res:int_ptr;
st:tSystemTime;
begin
for i:=0 to MaxTasks-1 do
begin
with TaskList[i] do
begin
if (flags and (ACF_ASSIGNED or ACF_DISABLED))=ACF_ASSIGNED then
if timer=idEvent then
begin
inaction:=true;
if ((flags and TCF_MAKEEVENT)<>0) and
(((flags and TCF_EVENTONCE) =0) or (curcount=count)) then
NotifyEventHooks(hevent,count-curcount,lParam(name));
GetLocalTime(st);
SystemTimeToFileTime(st,lastcall);
res:=CallService(MS_ACT_RUNBYID,action,0);
if ((res<>0) and ((flags and TCF_NONZEROBREAK)<>0)) or // non-zero result
(count=0) or (curcount=0) then // no need to repeat or all repeats done
begin
KillTimer(0,idEvent);
timer:=0;
flags:=flags or ACF_DISABLED;
end
else
begin
if (count<>0) and (count=curcount) then // next timer - repeat interval
begin
KillTimer(0,idEvent);
FileTimeToSystemTime(interval,st);
ltime:={st.wMilliseconds+}st.wSecond*1000+st.wMinute*1000*60+st.wHour*60*60*1000;
timer:=SetTimer(0,0,ltime,@TimerProc);
if count=-1 then
curcount:=1;
end;
if count>0 then
dec(curcount);
end;
inaction:=false;
break;
end;
end;
end;
end;
procedure SetTask(var task:tTaskRec);
var
ltime:uint;
uli1,uli2:ULARGE_INTEGER;
sft:tFileTime;
st:tSystemTime;
dif:int64;
begin
task.inprocess:=true;
// Check task time
if (task.flags and TCF_IMMEDIATELY)<>0 then
begin
FileTimeToSystemTime(task.interval,st);
ltime:={st.wMilliseconds+}st.wSecond*1000+st.wMinute*1000*60+
st.wHour*60*60*1000;
end
else if (task.flags and TCF_ABSOLUTE)<>0 then
begin
uli1.LowPart :=task.starttime.dwLowDateTime;
uli1.HighPart:=task.starttime.dwHighDateTime;
GetLocalTime(st);
SystemTimeToFileTime(st,sft);
uli2.LowPart :=sft.dwLowDateTime;
uli2.HighPart:=sft.dwHighDateTime;
dif:=uli1.QuadPart-uli2.QuadPart;
if dif>0 then // time in future
ltime:=dif div 10000 // 100ns to 1 ms
else // was in past
begin
task.flags:=task.flags or ACF_DISABLED;
exit;
end;
end
else
begin
// days+hours+minutes+seconds+millseconds
FileTimeToSystemTime(task.starttime,st);
ltime:={st.wMilliseconds+}st.wSecond*1000+st.wMinute*1000*60+
st.wHour*60*60*1000+task.dayoffset*24*60*60*1000;
end;
// set timer
task.curcount:=task.count;
task.timer :=SetTimer(0,0,ltime,@TimerProc);
if (task.flags and TCF_IMMEDIATELY)<>0 then
TimerProc(0,WM_TIMER,task.timer,0);
task.inprocess:=false;
end;
procedure SetAllTasks;
var
i:integer;
begin
for i:=0 to MaxTasks-1 do
begin
if (TaskList[i].flags and ACF_ASSIGNED)<>0 then
begin
if (TaskList[i].flags and ACF_DISABLED)=0 then
SetTask(TaskList[i])
else if TaskList[i].timer<>0 then
begin
KillTimer(0,TaskList[i].timer);
TaskList[i].timer:=0;
end;
end;
end;
end;
procedure StopAllTasks;
var
i:integer;
begin
for i:=0 to MaxTasks-1 do
begin
if (TaskList[i].flags and (ACF_ASSIGNED or ACF_DISABLED))=ACF_ASSIGNED then
if TaskList[i].timer<>0 then
begin
KillTimer(0,TaskList[i].timer);
TaskList[i].timer:=0;
end;
end;
end;
procedure ClearTasks;
var
i:integer;
begin
for i:=0 to MaxTasks-1 do
begin
with TaskList[i] do
begin
//!! if (flags and ACF_ASSIGNED)<>0 then
mFreeMem(name);
end;
end;
FreeMem(TaskList);
MaxTasks:=0;
end;
function CreateNewTask:integer;
var
i:integer;
tmp:pTaskList;
st:tSystemTime;
begin
result:=-1;
// if list is not empty, search for hole
if MaxTasks>0 then
begin
for i:=0 to MaxTasks-1 do
begin
if (TaskList[i].flags and ACF_ASSIGNED)=0 then
begin
FillChar(TaskList[i],SizeOf(tTaskRec),0);
result:=i;
break;
end;
end;
end;
if result<0 then
begin
// not found or empty list
i:=(MaxTasks+16)*SizeOf(tTaskRec);
GetMem (tmp ,i);
FillChar(tmp^,i,0);
if MaxTasks>0 then
begin
move(TaskList^,tmp^,MaxTasks*SizeOf(tTaskRec));
FreeMem(TaskList);
end;
TaskList:=tmp;
result:=MaxTasks;
inc(MaxTasks,16);
end;
with TaskList^[result] do
begin
flags:=flags or ACF_ASSIGNED or ACF_DISABLED or TCF_ABSOLUTE;
GetLocalTime(st);
SystemTimeToFileTime(st,starttime);
//!!! CHEAT
st.wHour :=0;
st.wMinute:=0;
st.wSecond:=1;
SystemTimeToFileTime(st,interval);
end;
end;
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