timers[i] = (timers[i]>0)? (timers[i]-1):(timers[i]);

for(uint8_t i=0; i < TaskListLen; i++)
        {
            if( timers[i] > 0 )
              --timers[i];
        }

if( timers[i] )
    timers[i]--;

for(uint8_t i=0; i < TaskListLen; i++)    
    timers[i] = (timers[i]>0)? (timers[i]-1):(timers[i]);            
Program Memory Usage     :    160 bytes   15,6 % Full
Data Memory Usage         :    2 bytes   3,1 % Full
{
00000019  PUSH R1        Push register on stack
0000001A  PUSH R0        Push register on stack
0000001B  IN R0,0x3F        In from I/O location
0000001C  PUSH R0        Push register on stack
0000001D  CLR R1        Clear Register
0000001E  PUSH R24        Push register on stack
    RELOAD_TCNT0();    
0000001F  LDI R24,0x82        Load immediate
00000020  OUT 0x32,R24        Out to I/O location
--- D:\Poligon\Scheduler\TinyScheduler\TinyScheduler\Debug/.././TinyScheduler.hpp
            timers[i] = (timers[i]>0)? (timers[i]-1):(timers[i]);            
00000021  LDS R24,0x0060        Load direct from data space
00000023  CPSE R24,R1        Compare, skip if equal
00000024  SUBI R24,0x01        Subtract immediate
00000025  STS 0x0060,R24        Store direct to data space
00000027  LDS R24,0x0061        Load direct from data space
00000029  CPSE R24,R1        Compare, skip if equal
0000002A  SUBI R24,0x01        Subtract immediate
0000002B  STS 0x0061,R24        Store direct to data space
--- D:\Poligon\Scheduler\TinyScheduler\TinyScheduler\Debug/.././main.cpp -------
}
0000002D  POP R24        Pop register from stack
0000002E  POP R0        Pop register from stack
0000002F  OUT 0x3F,R0        Out to I/O location
00000030  POP R0        Pop register from stack
00000031  POP R1        Pop register from stack
00000032  RETI         Interrupt return

for(uint8_t i=0; i < TaskListLen; i++)            
    if( timers[i] )
        timers[i]--;
Program Memory Usage     :    164 bytes   16,0 % Full
Data Memory Usage         :    2 bytes   3,1 % Full
{
00000019  PUSH R1        Push register on stack
0000001A  PUSH R0        Push register on stack
0000001B  IN R0,0x3F        In from I/O location
0000001C  PUSH R0        Push register on stack
0000001D  CLR R1        Clear Register
--- D:\Poligon\Scheduler\TinyScheduler\TinyScheduler\Debug/.././main.cpp -------
0000001E  PUSH R24        Push register on stack
    RELOAD_TCNT0();    
0000001F  LDI R24,0x82        Load immediate
00000020  OUT 0x32,R24        Out to I/O location
--- D:\Poligon\Scheduler\TinyScheduler\TinyScheduler\Debug/.././TinyScheduler.hpp
            if( timers[i] )
00000021  LDS R24,0x0060        Load direct from data space
00000023  TST R24        Test for Zero or Minus
00000024  BREQ PC+0x04        Branch if equal
                timers[i]--;
00000025  SUBI R24,0x01        Subtract immediate
00000026  STS 0x0060,R24        Store direct to data space
            if( timers[i] )
00000028  LDS R24,0x0061        Load direct from data space
0000002A  TST R24        Test for Zero or Minus
0000002B  BREQ PC+0x04        Branch if equal
                timers[i]--;
0000002C  SUBI R24,0x01        Subtract immediate
0000002D  STS 0x0061,R24        Store direct to data space
--- D:\Poligon\Scheduler\TinyScheduler\TinyScheduler\Debug/.././main.cpp -------
}
0000002F  POP R24        Pop register from stack
00000030  POP R0        Pop register from stack
00000031  OUT 0x3F,R0        Out to I/O location
00000032  POP R0        Pop register from stack
00000033  POP R1        Pop register from stack
00000034  RETI         Interrupt return

                           if( timers[i] ) timers[i]--;          
   \   00000000   ....               LDI     R30, timers
   \   00000002   0FE0               ADD     R30, R16
   \   00000004   8100               LD      R16, Z
   \   00000006   2300               TST     R16
   \   00000008   F011               BREQ    ??TimerISR_0
   \   0000000A   950A               DEC     R16
   \   0000000C   8300               ST      Z, R16

if( static_cast<TimerT>((TimeService::GetTickCount() - timers[I])) >= Task::Period )
            {
                Task::Run();
                timers[I] = TimeService::GetTickCount();
            }

static volatile uint8_t G_TimerTicks;
static uint8_t GetTickCount()
    {         
        return G_TimerTicks;
    };
ISR(TIM0_COMPA_vect)
{
    G_TimerTicks++;    
}