mirror of
https://github.com/MariaDB/server.git
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323 lines
8.8 KiB
C
323 lines
8.8 KiB
C
/* -*- mode: C; c-basic-offset: 4 -*- */
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#ident "$Id$"
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#ident "Copyright (c) 2007, 2008, 2009 Tokutek Inc. All rights reserved."
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#ident "The technology is licensed by the Massachusetts Institute of Technology, Rutgers State University of New Jersey, and the Research Foundation of State University of New York at Stony Brook under United States of America Serial No. 11/760379 and to the patents and/or patent applications resulting from it."
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/* rollback and rollforward routines. */
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#include "includes.h"
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#include "checkpoint.h"
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// these flags control whether or not we send commit messages for
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// various operations
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#define TOKU_DO_COMMIT_CMD_INSERT 0
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#define TOKU_DO_COMMIT_CMD_DELETE 1
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#define TOKU_DO_COMMIT_CMD_DELETE_BOTH 1
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int
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toku_commit_fcreate (TXNID UU(xid),
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FILENUM UU(filenum),
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BYTESTRING UU(bs_fname),
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TOKUTXN UU(txn),
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YIELDF UU(yield),
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void *UU(yield_v))
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{
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return 0;
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}
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int
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toku_rollback_fcreate (TXNID UU(xid),
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FILENUM filenum,
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BYTESTRING bs_fname,
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TOKUTXN txn,
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YIELDF yield,
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void* yield_v)
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{
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yield(toku_checkpoint_safe_client_lock, yield_v);
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char *fname = fixup_fname(&bs_fname);
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char *directory = txn->logger->directory;
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int full_len=strlen(fname)+strlen(directory)+2;
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char full_fname[full_len];
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int l = snprintf(full_fname,full_len, "%s/%s", directory, fname);
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assert(l+1 == full_len);
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//Remove reference to the fd in the cachetable
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CACHEFILE cf;
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int r = toku_cachefile_of_filenum(txn->logger->ct, filenum, &cf);
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if (r == 0) {
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r = toku_cachefile_redirect_nullfd(cf);
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assert(r==0);
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}
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r = unlink(full_fname);
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assert(r==0);
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toku_free(fname);
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toku_checkpoint_safe_client_unlock();
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return 0;
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}
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static int find_brt_from_filenum (OMTVALUE v, void *filenumvp) {
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FILENUM *filenump=filenumvp;
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BRT brt = v;
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FILENUM thisfnum = toku_cachefile_filenum(brt->cf);
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if (thisfnum.fileid<filenump->fileid) return -1;
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if (thisfnum.fileid>filenump->fileid) return +1;
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return 0;
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}
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static int do_insertion (enum brt_cmd_type type, TXNID xid, FILENUM filenum, BYTESTRING key, BYTESTRING *data,TOKUTXN txn) {
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CACHEFILE cf;
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//printf("%s:%d committing insert %s %s\n", __FILE__, __LINE__, key.data, data.data);
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int r = toku_cachefile_of_filenum(txn->logger->ct, filenum, &cf);
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assert(r==0);
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DBT key_dbt,data_dbt;
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BRT_CMD_S brtcmd = { type, xid,
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.u.id={toku_fill_dbt(&key_dbt, key.data, key.len),
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data
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? toku_fill_dbt(&data_dbt, data->data, data->len)
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: toku_init_dbt(&data_dbt) }};
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OMTVALUE brtv=NULL;
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r = toku_omt_find_zero(txn->open_brts, find_brt_from_filenum, &filenum, &brtv, NULL, NULL);
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assert(r==0);
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BRT brt = brtv;
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r = toku_brt_root_put_cmd(brt, &brtcmd, txn->logger);
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return r;
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}
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static int do_nothing_with_filenum(TOKUTXN txn, FILENUM filenum) {
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CACHEFILE cf;
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int r = toku_cachefile_of_filenum(txn->logger->ct, filenum, &cf);
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assert(r==0);
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return r;
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}
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int toku_commit_cmdinsert (TXNID xid, FILENUM filenum, BYTESTRING key, TOKUTXN txn, YIELDF UU(yield), void *UU(yieldv)) {
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#if TOKU_DO_COMMIT_CMD_INSERT
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return do_insertion (BRT_COMMIT_ANY, xid, filenum, key, 0, txn);
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#else
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xid = xid; key = key;
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return do_nothing_with_filenum(txn, filenum);
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#endif
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}
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int
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toku_commit_cmdinsertboth (TXNID xid,
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FILENUM filenum,
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BYTESTRING key,
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BYTESTRING data,
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TOKUTXN txn,
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YIELDF UU(yield),
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void * UU(yieldv))
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{
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#if TOKU_DO_COMMIT_CMD_INSERT
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return do_insertion (BRT_COMMIT_BOTH, xid, filenum, key, &data, txn);
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#else
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xid = xid; key = key; data = data;
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return do_nothing_with_filenum(txn, filenum);
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#endif
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}
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int
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toku_rollback_cmdinsert (TXNID xid,
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FILENUM filenum,
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BYTESTRING key,
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TOKUTXN txn,
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YIELDF UU(yield),
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void * UU(yieldv))
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{
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return do_insertion (BRT_ABORT_ANY, xid, filenum, key, 0, txn);
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}
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int
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toku_rollback_cmdinsertboth (TXNID xid,
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FILENUM filenum,
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BYTESTRING key,
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BYTESTRING data,
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TOKUTXN txn,
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YIELDF UU(yield),
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void * UU(yieldv))
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{
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return do_insertion (BRT_ABORT_BOTH, xid, filenum, key, &data, txn);
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}
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int
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toku_commit_cmddeleteboth (TXNID xid,
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FILENUM filenum,
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BYTESTRING key,
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BYTESTRING data,
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TOKUTXN txn,
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YIELDF UU(yield),
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void * UU(yieldv))
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{
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#if TOKU_DO_COMMIT_CMD_DELETE_BOTH
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return do_insertion (BRT_COMMIT_BOTH, xid, filenum, key, &data, txn);
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#else
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xid = xid; key = key; data = data;
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return do_nothing_with_filenum(txn, filenum);
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#endif
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}
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int
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toku_rollback_cmddeleteboth (TXNID xid,
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FILENUM filenum,
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BYTESTRING key,
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BYTESTRING data,
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TOKUTXN txn,
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YIELDF UU(yield),
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void * UU(yieldv))
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{
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return do_insertion (BRT_ABORT_BOTH, xid, filenum, key, &data, txn);
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}
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int
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toku_commit_cmddelete (TXNID xid,
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FILENUM filenum,
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BYTESTRING key,
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TOKUTXN txn,
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YIELDF UU(yield),
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void * UU(yieldv))
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{
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#if TOKU_DO_COMMIT_CMD_DELETE
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return do_insertion (BRT_COMMIT_ANY, xid, filenum, key, 0, txn);
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#else
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xid = xid; key = key;
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return do_nothing_with_filenum(txn, filenum);
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#endif
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}
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int
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toku_rollback_cmddelete (TXNID xid,
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FILENUM filenum,
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BYTESTRING key,
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TOKUTXN txn,
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YIELDF UU(yield),
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void * UU(yieldv))
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{
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return do_insertion (BRT_ABORT_ANY, xid, filenum, key, 0, txn);
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}
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int
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toku_commit_fileentries (int fd,
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TOKUTXN txn,
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YIELDF yield,
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void * yieldv)
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{
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BREAD f = create_bread_from_fd_initialize_at(fd);
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int r=0;
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MEMARENA ma = memarena_create();
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int count=0;
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while (bread_has_more(f)) {
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struct roll_entry *item;
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r = toku_read_rollback_backwards(f, &item, ma);
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if (r!=0) goto finish;
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r = toku_commit_rollback_item(txn, item, yield, yieldv);
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if (r!=0) goto finish;
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memarena_clear(ma);
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count++;
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if (count%2==0) yield(NULL, yieldv);
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}
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finish:
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{ int r2 = close_bread_without_closing_fd(f); assert(r2==0); }
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memarena_close(&ma);
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return r;
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}
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int
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toku_rollback_fileentries (int fd,
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TOKUTXN txn,
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YIELDF yield,
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void * yieldv)
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{
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BREAD f = create_bread_from_fd_initialize_at(fd);
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assert(f);
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int r=0;
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MEMARENA ma = memarena_create();
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int count=0;
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while (bread_has_more(f)) {
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struct roll_entry *item;
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r = toku_read_rollback_backwards(f, &item, ma);
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if (r!=0) goto finish;
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r = toku_abort_rollback_item(txn, item, yield, yieldv);
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if (r!=0) goto finish;
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memarena_clear(ma);
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count++;
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if (count%2==0) yield(NULL, yieldv);
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}
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finish:
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{ int r2 = close_bread_without_closing_fd(f); assert(r2==0); }
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memarena_close(&ma);
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return r;
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}
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int
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toku_commit_rollinclude (BYTESTRING bs,
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TOKUTXN txn,
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YIELDF yield,
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void * yieldv) {
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int r;
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char *fname = fixup_fname(&bs);
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int fd = open(fname, O_RDONLY+O_BINARY);
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assert(fd>=0);
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r = toku_commit_fileentries(fd, txn, yield, yieldv);
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assert(r==0);
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r = close(fd);
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assert(r==0);
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unlink(fname);
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toku_free(fname);
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return 0;
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}
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int
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toku_rollback_rollinclude (BYTESTRING bs,
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TOKUTXN txn,
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YIELDF yield,
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void * yieldv)
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{
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int r;
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char *fname = fixup_fname(&bs);
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int fd = open(fname, O_RDONLY+O_BINARY);
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assert(fd>=0);
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r = toku_rollback_fileentries(fd, txn, yield, yieldv);
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assert(r==0);
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r = close(fd);
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assert(r==0);
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unlink(fname);
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toku_free(fname);
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return 0;
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}
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int
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toku_rollback_tablelock_on_empty_table (FILENUM filenum,
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TOKUTXN txn,
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YIELDF yield,
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void* yield_v)
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{
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yield(toku_checkpoint_safe_client_lock, yield_v);
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// on rollback we have to make the file be empty, since we locked an empty table, and then may have done things to it.
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CACHEFILE cf;
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//printf("%s:%d committing insert %s %s\n", __FILE__, __LINE__, key.data, data.data);
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int r = toku_cachefile_of_filenum(txn->logger->ct, filenum, &cf);
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assert(r==0);
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OMTVALUE brtv=NULL;
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r = toku_omt_find_zero(txn->open_brts, find_brt_from_filenum, &filenum, &brtv, NULL, NULL);
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if (r==0) {
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// If r!=0 it could be because we grabbed a log on an empty table that doesn't even exist, and we never put anything into it.
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// So, just don't do anything in this case.
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BRT brt = brtv;
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r = toku_brt_truncate(brt);
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assert(r==0);
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}
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toku_checkpoint_safe_client_unlock();
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return r;
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}
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int
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toku_commit_tablelock_on_empty_table (FILENUM filenum, TOKUTXN txn, YIELDF UU(yield), void* UU(yield_v))
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{
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return do_nothing_with_filenum(txn, filenum);
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}
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