Index: net/disk_cache/hash.cc |
diff --git a/net/disk_cache/hash.cc b/net/disk_cache/hash.cc |
deleted file mode 100644 |
index 78634b6233321965d617dd62f4251490a90e6da4..0000000000000000000000000000000000000000 |
--- a/net/disk_cache/hash.cc |
+++ /dev/null |
@@ -1,73 +0,0 @@ |
-// From http://www.azillionmonkeys.com/qed/hash.html |
- |
-#include "net/disk_cache/hash.h" |
- |
-typedef uint32 uint32_t; |
-typedef uint16 uint16_t; |
- |
-namespace disk_cache { |
- |
-#undef get16bits |
-#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__) \ |
- || defined(_MSC_VER) || defined (__BORLANDC__) || defined (__TURBOC__) |
-#define get16bits(d) (*((const uint16_t *) (d))) |
-#endif |
- |
-#if !defined (get16bits) |
-#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8)\ |
- +(uint32_t)(((const uint8_t *)(d))[0]) ) |
-#endif |
- |
-uint32 SuperFastHash(const char * data, int len) { |
- uint32_t hash = len, tmp; |
- int rem; |
- |
- if (len <= 0 || data == NULL) |
- return 0; |
- |
- rem = len & 3; |
- len >>= 2; |
- |
- /* Main loop */ |
- for (; len > 0; len--) { |
- hash += get16bits(data); |
- tmp = (get16bits(data + 2) << 11) ^ hash; |
- hash = (hash << 16) ^ tmp; |
- data += 2 * sizeof(uint16_t); |
- hash += hash >> 11; |
- } |
- |
- /* Handle end cases */ |
- switch (rem) { |
- case 3: |
- hash += get16bits(data); |
- hash ^= hash << 16; |
- |
- // Treat the final character as signed. This ensures all platforms behave |
- // consistently with the original x86 code. |
- hash ^= static_cast<signed char>(data[sizeof(uint16_t)]) << 18; |
- hash += hash >> 11; |
- break; |
- case 2: |
- hash += get16bits(data); |
- hash ^= hash << 11; |
- hash += hash >> 17; |
- break; |
- case 1: |
- hash += static_cast<signed char>(*data); |
- hash ^= hash << 10; |
- hash += hash >> 1; |
- } |
- |
- /* Force "avalanching" of final 127 bits */ |
- hash ^= hash << 3; |
- hash += hash >> 5; |
- hash ^= hash << 4; |
- hash += hash >> 17; |
- hash ^= hash << 25; |
- hash += hash >> 6; |
- |
- return hash; |
-} |
- |
-} // namespace disk_cache |