remove ceph code

[stor4nfv.git] / src / ceph / src / common / ceph_hash.cc

diff --git a/src/ceph/src/common/ceph_hash.cc b/src/ceph/src/common/ceph_hash.cc
deleted file mode 100644 (file)
index 061926d..0000000
--- a/src/ceph/src/common/ceph_hash.cc
+++ /dev/null
@@ -1,128 +0,0 @@
-
-#include "include/types.h"
-
-/*
- * Robert Jenkin's hash function.
- * http://burtleburtle.net/bob/hash/evahash.html
- * This is in the public domain.
- */
-#define mix(a, b, c)                                           \
-       do {                                                    \
-               a = a - b;  a = a - c;  a = a ^ (c >> 13);      \
-               b = b - c;  b = b - a;  b = b ^ (a << 8);       \
-               c = c - a;  c = c - b;  c = c ^ (b >> 13);      \
-               a = a - b;  a = a - c;  a = a ^ (c >> 12);      \
-               b = b - c;  b = b - a;  b = b ^ (a << 16);      \
-               c = c - a;  c = c - b;  c = c ^ (b >> 5);       \
-               a = a - b;  a = a - c;  a = a ^ (c >> 3);       \
-               b = b - c;  b = b - a;  b = b ^ (a << 10);      \
-               c = c - a;  c = c - b;  c = c ^ (b >> 15);      \
-       } while (0)
-
-unsigned ceph_str_hash_rjenkins(const char *str, unsigned length)
-{
-       const unsigned char *k = (const unsigned char *)str;
-       __u32 a, b, c;  /* the internal state */
-       __u32 len;      /* how many key bytes still need mixing */
-
-       /* Set up the internal state */
-       len = length;
-       a = 0x9e3779b9;      /* the golden ratio; an arbitrary value */
-       b = a;
-       c = 0;               /* variable initialization of internal state */
-
-       /* handle most of the key */
-       while (len >= 12) {
-               a = a + (k[0] + ((__u32)k[1] << 8) + ((__u32)k[2] << 16) +
-                        ((__u32)k[3] << 24));
-               b = b + (k[4] + ((__u32)k[5] << 8) + ((__u32)k[6] << 16) +
-                        ((__u32)k[7] << 24));
-               c = c + (k[8] + ((__u32)k[9] << 8) + ((__u32)k[10] << 16) +
-                        ((__u32)k[11] << 24));
-               mix(a, b, c);
-               k = k + 12;
-               len = len - 12;
-       }
-
-       /* handle the last 11 bytes */
-       c = c + length;
-       switch (len) {            /* all the case statements fall through */
-       case 11:
-               c = c + ((__u32)k[10] << 24);
-       case 10:
-               c = c + ((__u32)k[9] << 16);
-       case 9:
-               c = c + ((__u32)k[8] << 8);
-               /* the first byte of c is reserved for the length */
-       case 8:
-               b = b + ((__u32)k[7] << 24);
-       case 7:
-               b = b + ((__u32)k[6] << 16);
-       case 6:
-               b = b + ((__u32)k[5] << 8);
-       case 5:
-               b = b + k[4];
-       case 4:
-               a = a + ((__u32)k[3] << 24);
-       case 3:
-               a = a + ((__u32)k[2] << 16);
-       case 2:
-               a = a + ((__u32)k[1] << 8);
-       case 1:
-               a = a + k[0];
-               /* case 0: nothing left to add */
-       }
-       mix(a, b, c);
-
-       return c;
-}
-
-/*
- * linux dcache hash
- */
-unsigned ceph_str_hash_linux(const char *str, unsigned length)
-{
-       unsigned hash = 0;
-
-       while (length--) {
-               unsigned char c = *str++;
-               hash = (hash + (c << 4) + (c >> 4)) * 11;
-       }
-       return hash;
-}
-
-
-unsigned ceph_str_hash(int type, const char *s, unsigned len)
-{
-       switch (type) {
-       case CEPH_STR_HASH_LINUX:
-               return ceph_str_hash_linux(s, len);
-       case CEPH_STR_HASH_RJENKINS:
-               return ceph_str_hash_rjenkins(s, len);
-       default:
-               return -1;
-       }
-}
-
-const char *ceph_str_hash_name(int type)
-{
-       switch (type) {
-       case CEPH_STR_HASH_LINUX:
-               return "linux";
-       case CEPH_STR_HASH_RJENKINS:
-               return "rjenkins";
-       default:
-               return "unknown";
-       }
-}
-
-bool ceph_str_hash_valid(int type)
-{
-        switch (type) {
-        case CEPH_STR_HASH_LINUX:
-        case CEPH_STR_HASH_RJENKINS:
-                return true;
-        default:
-                return false;
-        }
-}