[ros-diffs] [weiden] 16849: clear out the lower 2 bits of a pid before using it to calculate the hash as they may vary

clear out the lower 2 bits of a pid before using it to calculate the
hash as they may vary
Modified: trunk/reactos/subsys/csrss/api/process.c
  _____

Modified: trunk/reactos/subsys/csrss/api/process.c
--- trunk/reactos/subsys/csrss/api/process.c	2005-07-28 23:22:47 UTC
(rev 16848)
+++ trunk/reactos/subsys/csrss/api/process.c	2005-07-28 23:29:44 UTC
(rev 16849)
@@ -37,7 +37,7 @@

ULONG hash;
    PCSRSS_PROCESS_DATA pProcessData;

-   hash = (ULONG_PTR)ProcessId % (sizeof(ProcessData) /
sizeof(*ProcessData));
+   hash = ((ULONG_PTR)ProcessId & ~0x3) % (sizeof(ProcessData) /
sizeof(*ProcessData));

LOCK;

@@ -59,7 +59,7 @@
    CLIENT_ID ClientId;
    NTSTATUS Status;

-   hash = (ULONG_PTR)ProcessId % (sizeof(ProcessData) /
sizeof(*ProcessData));
+   hash = ((ULONG_PTR)ProcessId & ~0x3) % (sizeof(ProcessData) /
sizeof(*ProcessData));

LOCK;

@@ -121,7 +121,7 @@
   UINT c;
   PCSRSS_PROCESS_DATA pProcessData, pPrevProcessData = NULL;

-  hash = (ULONG_PTR)Pid % (sizeof(ProcessData) / sizeof(*ProcessData));
+  hash = ((ULONG_PTR)Pid & ~0x3) % (sizeof(ProcessData) /
sizeof(*ProcessData));

LOCK;