Changeset 21921 in vbox

Timestamp:

Jul 31, 2009 3:45:43 PM (16 years ago)

Author:

vboxsync

Message:

SSM: moved out the Adler32 code. (it sucked)

File:

• trunk/src/VBox/VMM/SSM-new.cpp (modified) (1 diff)

trunk/src/VBox/VMM/SSM-new.cpp

@@ -264 +264 @@
 #define SSM_ZIP_BLOCK_SIZE                      _4K
 AssertCompile(SSM_ZIP_BLOCK_SIZE / _1K * _1K == SSM_ZIP_BLOCK_SIZE);
-
-#if 0
-static uint32_t RTCrcAdler32Start(void)
-{
-    return 1;
-}
-
-static uint32_t RTCrcAdler32Process(uint32_t u32Crc, void const *pv, size_t cb)
-{
-    uint8_t const  *pbSrc = (uint8_t const *)pv;
-    uint32_t        a     = u32Crc & 0xffff;
-    uint32_t        b     = u32Crc >> 16;
-    if (cb < 64)
-    {
-        while (cb-- > 0)
-        {
-            a += *pbSrc++;
-            a %= 65521;
-            b += a;
-            b %= 65521;
-        }
-    }
-    else
-    {
-        while (((uintptr_t)pbSrc & 0x3))
-        {
-            a += *pbSrc++;
-            a %= 65521;
-            b += a;
-            b %= 65521;
-            cb--;
-        }
-
-        while (cb >= 4)
-        {
-            uint32_t u32 = *(uint32_t const *)pbSrc;
-            pbSrc += 4;
-
-            a += u32 & 0xff;
-            a %= 65521;
-            b += a;
-            b %= 65521;
-
-            a += (u32 >> 8) & 0xff;
-            a %= 65521;
-            b += a;
-            b %= 65521;
-
-            a += (u32 >> 16) & 0xff;
-            a %= 65521;
-            b += a;
-            b %= 65521;
-
-            a += (u32 >> 24) & 0xff;
-            a %= 65521;
-            b += a;
-            b %= 65521;
-
-            cb -= 4;
-        }
-
-        while (cb > 0)
-        {
-            a += *pbSrc++;
-            a %= 65521;
-            b += a;
-            b %= 65521;
-            cb--;
-        }
-    }
-
-    return a | (b << 16);
-}
-
-static uint32_t RTCrcAdler32Finish(uint32_t u32Crc)
-{
-    return u32Crc;
-
-}
-
-static uint32_t RTCrcAdler32(void const *pv, size_t cb)
-{
-    return RTCrcAdler32Process(RTCrcAdler32Start(), pv, cb);
-}
-
-# define RTCrc32            RTCrcAdler32
-# define RTCrc32Start       RTCrcAdler32Start
-# define RTCrc32Process     RTCrcAdler32Process
-# define RTCrc32Finish      RTCrcAdler32Finish
-
-#endif