[reactos] 02/02: [NTOS:KD] Simplify min-values calculations in KdpPrintToLogFile and KdpScreenPrint.

[Hermès Bélusca-Maïto]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=cee893be99b5cd159a580a...

commit cee893be99b5cd159a580a5dec9eef1ccef93dc5
Author:     Hermès Bélusca-Maïto [e-mail]
AuthorDate: Mon Jan 9 16:08:07 2023 +0100
Commit:     Hermès Bélusca-Maïto [e-mail]
CommitDate: Thu Mar 9 18:26:53 2023 +0100

[NTOS:KD] Simplify min-values calculations in KdpPrintToLogFile and KdpScreenPrint.
---
 ntoskrnl/kd/kdio.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/ntoskrnl/kd/kdio.c b/ntoskrnl/kd/kdio.c
index 45733e0b3ca..5f2c7f966c7 100644
--- a/ntoskrnl/kd/kdio.c
+++ b/ntoskrnl/kd/kdio.c
@@ -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;