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Fixed timer constants and repitition code

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svn path=/trunk/; revision=78
This commit is contained in:
Rex Jolliff 1998-10-31 15:46:36 +00:00
parent 09215f3126
commit e3a11b68b8
1 changed files with 30 additions and 11 deletions
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41
reactos/ntoskrnl/ke/timer.c
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@ -43,8 +43,9 @@ static volatile unsigned long long ticks=0;
* *
* = (1/18.2)*10^9 * = (1/18.2)*10^9
* *
* RJJ was 54945055
*/ */
#define CLOCK_INCREMENT (54945055) #define CLOCK_INCREMENT (549450)
/* /*
* PURPOSE: List of timers * PURPOSE: List of timers
@ -57,6 +58,7 @@ static KSPIN_LOCK timer_list_lock = {0,};
#define MICROSECONDS_PER_TICK (54945) #define MICROSECONDS_PER_TICK (54945)
#define TICKS_TO_CALIBRATE (1) #define TICKS_TO_CALIBRATE (1)
#define CALIBRATE_PERIOD (MICROSECONDS_PER_TICK * TICKS_TO_CALIBRATE) #define CALIBRATE_PERIOD (MICROSECONDS_PER_TICK * TICKS_TO_CALIBRATE)
#define SYSTEM_TIME_UNITS_PER_MSEC (10000)
static unsigned int loops_per_microsecond = 100; static unsigned int loops_per_microsecond = 100;
@ -243,6 +245,8 @@ LARGE_INTEGER KeQueryPerformanceCounter(PLARGE_INTEGER PerformanceFreq)
{ {
PerformanceFreq->HighPart=0; PerformanceFreq->HighPart=0;
PerformanceFreq->LowPart=0; PerformanceFreq->LowPart=0;
return *PerformanceFreq;
} }
ULONG KeQueryTimeIncrement(VOID) ULONG KeQueryTimeIncrement(VOID)
@ -315,20 +319,28 @@ BOOLEAN KeSetTimerEx(PKTIMER Timer, LARGE_INTEGER DueTime, LONG Period,
Timer->dpc=Dpc; Timer->dpc=Dpc;
Timer->period=Period; Timer->period=Period;
Timer->expire_time = LargeIntegerToSLL(&DueTime); Timer->expire_time = (*(long long int *)&DueTime);
if (Timer->expire_time < 0) if (Timer->expire_time < 0)
{ {
Timer->expire_time = system_time - Timer->expire_time; Timer->expire_time = system_time + (-Timer->expire_time);
} }
DPRINT("System:%ld:%ld Expire:%d:%d Period:%d\n",
(unsigned long) (system_time & 0xffffffff),
(unsigned long) ((system_time >> 32) & 0xffffffff),
(unsigned long) (Timer->expire_time & 0xffffffff),
(unsigned long) ((Timer->expire_time >> 32) & 0xffffffff),
Timer->period);
Timer->signaled = FALSE; Timer->signaled = FALSE;
if (Timer->running) if (Timer->running)
{ {
KeReleaseSpinLock(&timer_list_lock,oldlvl); KeReleaseSpinLock(&timer_list_lock,oldlvl);
return(TRUE);
return TRUE;
} }
InsertTailList(&timer_list_head,&Timer->entry); InsertTailList(&timer_list_head,&Timer->entry);
KeReleaseSpinLock(&timer_list_lock,oldlvl); KeReleaseSpinLock(&timer_list_lock,oldlvl);
return(FALSE);
return FALSE;
} }
BOOLEAN KeCancelTimer(PKTIMER Timer) BOOLEAN KeCancelTimer(PKTIMER Timer)
@ -346,16 +358,17 @@ BOOLEAN KeCancelTimer(PKTIMER Timer)
if (!Timer->running) if (!Timer->running)
{ {
return(FALSE); return FALSE;
} }
RemoveEntryList(&Timer->entry); RemoveEntryList(&Timer->entry);
KeReleaseSpinLock(&timer_list_lock,oldlvl); KeReleaseSpinLock(&timer_list_lock,oldlvl);
return(TRUE);
return TRUE;
} }
BOOLEAN KeReadStateTimer(PKTIMER Timer) BOOLEAN KeReadStateTimer(PKTIMER Timer)
{ {
return(Timer->signaled); return Timer->signaled;
} }
VOID KeInitializeTimer(PKTIMER Timer) VOID KeInitializeTimer(PKTIMER Timer)
@ -406,9 +419,15 @@ static void HandleExpiredTimer(PKTIMER current)
current->dpc->SystemArgument2); current->dpc->SystemArgument2);
} }
current->signaled=TRUE; current->signaled=TRUE;
if (current->period !=0) if (current->period != 0)
{ {
current->expire_time = current->expire_time + current->period; DPRINT("System:%ld:%ld Expire:%d:%d Period:%d\n",
(unsigned long) (system_time & 0xffffffff),
(unsigned long) ((system_time >> 32) & 0xffffffff),
(unsigned long) (current->expire_time & 0xffffffff),
(unsigned long) ((current->expire_time >> 32) & 0xffffffff),
current->period);
current->expire_time += current->period * SYSTEM_TIME_UNITS_PER_MSEC;
} }
else else
{ {
@ -427,7 +446,7 @@ void KeExpireTimers(void)
while (current_entry!=(&timer_list_head)) while (current_entry!=(&timer_list_head))
{ {
if (system_time == current->expire_time) if (system_time >= current->expire_time)
{ {
HandleExpiredTimer(current); HandleExpiredTimer(current);
} }