/* -*- 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"
#include "cachetable-test.h"

bool v1_written;
uint64_t val1;
bool v2_written;
uint64_t val2;
uint64_t val3;
bool check_me;


static void
flush (CACHEFILE f __attribute__((__unused__)),
       int UU(fd),
       CACHEKEY k  __attribute__((__unused__)),
       void *v     __attribute__((__unused__)),
       void** UU(dd),
       void *e     __attribute__((__unused__)),
       PAIR_ATTR s      __attribute__((__unused__)),
       PAIR_ATTR* new_size      __attribute__((__unused__)),
       bool w      __attribute__((__unused__)),
       bool keep   __attribute__((__unused__)),
       bool c      __attribute__((__unused__)),
        bool UU(is_clone)
       ) {
    /* Do nothing */
    if (verbose) { printf("FLUSH: %d\n", (int)k.b); }
    //usleep (5*1024*1024);
    if(check_me) {
        assert(c);
        assert(keep);
        assert(w);
        if (v == &val1) {
            v1_written = true;
        }
        else if (v == &val2) {
            v2_written = true;
        }
        else {
            assert(false);
        }
    }
}

PAIR* dest_pair;

static int
fetch (CACHEFILE f        __attribute__((__unused__)),
       PAIR 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,
       void *extraargs    __attribute__((__unused__))
       ) {
  *dirtyp = 0;
  *value = extraargs;
  *sizep = make_pair_attr(8);
  *dest_pair = p;
  return 0;
}

static void
cachetable_test (bool write_first, bool write_second, bool start_checkpoint) {
    const int test_limit = 12;
    int r;
    CACHETABLE ct;
    toku_cachetable_create(&ct, test_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, S_IRWXU|S_IRWXG|S_IRWXO); assert(r == 0);
    create_dummy_functions(f1);
    
    void* v1;
    void* v2;
    void* v3;
    PAIR dependent_pairs[2];
    CACHETABLE_WRITE_CALLBACK wc = def_write_callback(&val1);
    wc.flush_callback = flush;
    wc.write_extraargs = &val1;
    dest_pair = &dependent_pairs[0];
    r = toku_cachetable_get_and_pin(f1, make_blocknum(1), 1, &v1, wc, fetch, def_pf_req_callback, def_pf_callback, true, &val1);
    dest_pair = &dependent_pairs[1];
    wc.write_extraargs = &val2;
    r = toku_cachetable_get_and_pin(f1, make_blocknum(2), 2, &v2, wc, fetch, def_pf_req_callback, def_pf_callback, true, &val2);

    // now we set the dirty state of these two.
    enum cachetable_dirty cd[2];
    cd[0] = write_first ? CACHETABLE_DIRTY : CACHETABLE_CLEAN;
    cd[1] = write_second ? CACHETABLE_DIRTY : CACHETABLE_CLEAN;
    CHECKPOINTER cp = toku_cachetable_get_checkpointer(ct);
    if (start_checkpoint) {
        //
        // should mark the v1 and v2 as pending
        //
        toku_cachetable_begin_checkpoint(cp, NULL);
    }
    //
    // This call should cause a flush for both
    //
    check_me = true;
    v1_written = false;
    v2_written = false;
    wc.write_extraargs = &val3;
    r = toku_cachetable_get_and_pin_with_dep_pairs(
        f1,
        make_blocknum(3),
        3,
        &v3,
        wc, fetch, def_pf_req_callback, def_pf_callback,
        PL_WRITE_EXPENSIVE,
        &val3,
        2, //num_dependent_pairs
        dependent_pairs,
        cd
        );
    if (start_checkpoint) {
        assert(v1_written == write_first);
        assert(v2_written == write_second);
    }
    else {
        assert(!v1_written);
        assert(!v2_written);
    }
    check_me = false;
    r = toku_test_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_CLEAN, make_pair_attr(8));
    r = toku_test_cachetable_unpin(f1, make_blocknum(2), 2, CACHETABLE_CLEAN, make_pair_attr(8));
    r = toku_test_cachetable_unpin(f1, make_blocknum(3), 3, CACHETABLE_CLEAN, make_pair_attr(8));

    if (start_checkpoint) {
        toku_cachetable_end_checkpoint(
            cp, 
            NULL, 
            NULL,
            NULL
            );
    }

    toku_cachetable_verify(ct);
    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_test(false,false,true);
  cachetable_test(false,true,true);
  cachetable_test(true,false,true);
  cachetable_test(true,true,true);
  cachetable_test(false,false,false);
  cachetable_test(false,true,false);
  cachetable_test(true,false,false);
  cachetable_test(true,true,false);
  return 0;
}