mariadb/storage/tokudb/PerconaFT/ft/tests/cachetable-unpin-and-remove-test.cc

/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
/*======
This file is part of PerconaFT.


Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.

    PerconaFT is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2,
    as published by the Free Software Foundation.

    PerconaFT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with PerconaFT.  If not, see <http://www.gnu.org/licenses/>.

----------------------------------------

    PerconaFT is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License, version 3,
    as published by the Free Software Foundation.

    PerconaFT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with PerconaFT.  If not, see <http://www.gnu.org/licenses/>.
======= */

#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."

#include "test.h"

static int
fetch (CACHEFILE f        __attribute__((__unused__)),
       PAIR UU(p),
       int UU(fd),
       CACHEKEY k         __attribute__((__unused__)),
       uint32_t fullhash __attribute__((__unused__)),
       void **value       __attribute__((__unused__)),
       void** UU(dd),
       PAIR_ATTR *sizep        __attribute__((__unused__)),
       int  *dirtyp       __attribute__((__unused__)),
       void *extraargs    __attribute__((__unused__))
       ) {
    *dirtyp = 0;
    *sizep = make_pair_attr(0);
    return 0;
}

// test simple unpin and remove
static void
cachetable_unpin_and_remove_test (int n) {
    if (verbose) printf("%s %d\n", __FUNCTION__, n);
    const int table_limit = 2*n;
    int r;
    int i;

    CACHETABLE ct;
    toku_cachetable_create(&ct, table_limit, ZERO_LSN, nullptr);
    const char *fname1 = TOKU_TEST_FILENAME;
    unlink(fname1);
    CACHEFILE f1;
    r = toku_cachetable_openf(&f1, ct, fname1, O_RDWR|O_CREAT, 0777); assert(r == 0);
    CACHETABLE_WRITE_CALLBACK wc = def_write_callback(NULL);

    // generate some random keys
    CACHEKEY keys[n]; int nkeys = n;
    for (i=0; i<n; i++) {
        keys[i].b = random();
    }

    // put the keys into the cachetable
    for (i=0; i<n; i++) {
        uint32_t hi = toku_cachetable_hash(f1, make_blocknum(keys[i].b));
        toku_cachetable_put(f1, make_blocknum(keys[i].b), hi, (void *)(long) keys[i].b, make_pair_attr(1),wc, put_callback_nop);
    }
    
    // unpin and remove
    CACHEKEY testkeys[n];
    for (i=0; i<n; i++) testkeys[i] = keys[i];
    while (nkeys > 0) {
        i = random() % nkeys;
        uint32_t hi = toku_cachetable_hash(f1, make_blocknum(testkeys[i].b));
        r = toku_test_cachetable_unpin_and_remove(f1, testkeys[i], NULL, NULL);
        assert(r == 0);

        toku_cachefile_verify(f1);

        // verify that k is removed
        void *v;
        r = toku_cachetable_maybe_get_and_pin(f1, make_blocknum(testkeys[i].b), hi, PL_WRITE_EXPENSIVE, &v);
        assert(r != 0);

        testkeys[i] = testkeys[nkeys-1]; nkeys -= 1;
    }

    // verify that the cachtable is empty
    int nentries;
    toku_cachetable_get_state(ct, &nentries, NULL, NULL, NULL);
    assert(nentries == 0);

    toku_cachefile_close(&f1, false, ZERO_LSN);
    toku_cachetable_close(&ct);
}

// test remove when the pair in being written
static void
cachetable_put_evict_remove_test (int n) {
    if (verbose) printf("%s %d\n", __FUNCTION__, n);
    const int table_limit = n-1;
    int r;
    int i;

    CACHETABLE ct;
    toku_cachetable_create(&ct, table_limit, ZERO_LSN, nullptr);
    const char *fname1 = TOKU_TEST_FILENAME;
    unlink(fname1);
    CACHEFILE f1;
    r = toku_cachetable_openf(&f1, ct, fname1, O_RDWR|O_CREAT, 0777); assert(r == 0);
    CACHETABLE_WRITE_CALLBACK wc = def_write_callback(NULL);

    uint32_t hi[n];
    for (i=0; i<n; i++)
        hi[i] = toku_cachetable_hash(f1, make_blocknum(i));

    // put 0, 1, 2, ... should evict 0
    for (i=0; i<n; i++) {
        toku_cachetable_put(f1, make_blocknum(i), hi[i], (void *)(long)i, make_pair_attr(1), wc, put_callback_nop);
        r = toku_test_cachetable_unpin(f1, make_blocknum(i), hi[i], CACHETABLE_CLEAN, make_pair_attr(1));
        assert(r == 0);
    }

    // get 0
    void *v;
    r = toku_cachetable_get_and_pin(f1, make_blocknum(0), hi[0], &v, wc, fetch, def_pf_req_callback, def_pf_callback, true, 0);
    assert(r == 0);
        
    // remove 0
    r = toku_test_cachetable_unpin_and_remove(f1, make_blocknum(0), NULL, NULL);
    assert(r == 0);

    toku_cachefile_close(&f1, false, ZERO_LSN);
    toku_cachetable_close(&ct);
}

int
test_main(int argc, const char *argv[]) {
    default_parse_args(argc, argv);
    cachetable_unpin_and_remove_test(8);
    cachetable_put_evict_remove_test(4);
    return 0;
}