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[NTOS:KD] Simplify min-values calculations in KdpPrintToLogFile and KdpScreenPrint.

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Hermès Bélusca-Maïto
2023-01-09 16:08:07 +01:00
parent 4585372c6d
commit cee893be99
1 changed files with 4 additions and 9 deletions
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13
ntoskrnl/kd/kdio.c
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@@ -174,10 +174,7 @@ KdpPrintToLogFile(PCHAR String,
OldIrql = KdbpAcquireLock(&KdpDebugLogSpinLock);
beg = KdpCurrentPosition;
num = KdpFreeBytes;
if (Length < num)
num = Length;
num = min(Length, KdpFreeBytes);
if (num != 0)
{
end = (beg + num) % KdpBufferSize;
@@ -470,16 +467,14 @@ KdpScreenPrint(PCHAR String,
return;
if (KdpDmesgBuffer == NULL)
return;
return;
/* Acquire the printing spinlock without waiting at raised IRQL */
OldIrql = KdbpAcquireLock(&KdpDmesgLogSpinLock);
/* Invariant: always_true(KdpDmesgFreeBytes == KdpDmesgBufferSize);
* set num to min(KdpDmesgFreeBytes, Length).
*/
num = (Length < KdpDmesgFreeBytes) ? Length : KdpDmesgFreeBytes;
beg = KdpDmesgCurrentPosition;
/* Invariant: always_true(KdpDmesgFreeBytes == KdpDmesgBufferSize); */
num = min(Length, KdpDmesgFreeBytes);
if (num != 0)
{
end = (beg + num) % KdpDmesgBufferSize;