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59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/* -*- mode: C; c-basic-offset: 4 -*- */
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#ident "Copyright (c) 2007, 2008 Tokutek Inc. All rights reserved."
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#include <arpa/inet.h>
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#include "brt-internal.h"
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#include "toku_assert.h"
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#include "x1764.h"
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// Calculate the fingerprint for a kvpair
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static void toku_calc_more_murmur_kvpair (struct x1764 *mm, const void *key, int keylen, const void *val, int vallen) {
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int i;
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i = htonl(keylen);
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x1764_add(mm, (void*)&i, 4);
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x1764_add(mm, key, keylen);
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i = htonl(vallen);
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x1764_add(mm, (void*)&i, 4);
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x1764_add(mm, val, vallen);
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}
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#if 0
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u_int32_t toku_calccrc32_kvpair (const void *key, int keylen, const void *val, int vallen) {
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return toku_calc_more_crc32_kvpair(toku_null_crc, key, keylen, val, vallen);
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}
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u_int32_t toku_calccrc32_kvpair_struct (const struct kv_pair *kvp) {
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return toku_calccrc32_kvpair(kv_pair_key_const(kvp), kv_pair_keylen(kvp),
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kv_pair_val_const(kvp), kv_pair_vallen(kvp));
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}
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#endif
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u_int32_t toku_calc_fingerprint_cmd (u_int32_t type, TXNID xid, const void *key, u_int32_t keylen, const void *val, u_int32_t vallen) {
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unsigned char type_c = type;
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unsigned int a = htonl(xid>>32);
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unsigned int b = htonl(xid&0xffffffff);
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struct x1764 mm;
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x1764_init(&mm);
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x1764_add(&mm, &type_c, 1);
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x1764_add(&mm, &a, 4);
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x1764_add(&mm, &b, 4);
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toku_calc_more_murmur_kvpair(&mm, key, keylen, val, vallen);
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return x1764_finish(&mm);
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}
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u_int32_t toku_calc_fingerprint_cmdstruct (BRT_CMD cmd) {
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switch (cmd->type) {
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case BRT_INSERT:
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case BRT_DELETE_ANY:
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case BRT_DELETE_BOTH:
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case BRT_COMMIT_ANY:
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case BRT_COMMIT_BOTH:
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case BRT_ABORT_ANY:
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case BRT_ABORT_BOTH:
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return toku_calc_fingerprint_cmd (cmd->type, cmd->xid, cmd->u.id.key->data, cmd->u.id.key->size, cmd->u.id.val->data, cmd->u.id.val->size);
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case BRT_NONE:
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return 0;
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}
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assert(0); /* Should not have come here. */
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return 0;
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}
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