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42 lines
1.5 KiB
C
42 lines
1.5 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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// Calculate the fingerprint for a kvpair
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static inline u_int32_t toku_calc_more_crc32_kvpair (u_int32_t crc, 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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crc = toku_crc32(crc, (void*)&i, 4);
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crc = toku_crc32(crc, key, keylen);
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i = htonl(vallen);
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crc = toku_crc32(crc, (void*)&i, 4);
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crc = toku_crc32(crc, val, vallen);
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return crc;
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}
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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_cmd (int type, TXNID xid, const void *key, int keylen, const void *val, int 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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return toku_calc_more_crc32_kvpair(toku_crc32(toku_crc32(toku_crc32(toku_null_crc,
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&type_c, 1),
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&a, 4),
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&b, 4),
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key, keylen, val, vallen);
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}
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u_int32_t toku_calccrc32_cmdstruct (BRT_CMD cmd) {
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if (cmd->type <= BRT_DELETE_BOTH)
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return toku_calccrc32_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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else {
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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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}
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