/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
#ident "Copyright (c) 2007-2012 Tokutek Inc.  All rights reserved."
#include "test.h"

//
// This test verifies that the cleaner thread doesn't call the callback if
// nothing needs flushing.
//

CACHEFILE f1;
bool my_cleaner_callback_called;

static int
my_cleaner_callback(
    void* UU(ftnode_pv),
    BLOCKNUM blocknum,
    uint32_t fullhash,
    void* UU(extraargs)
    )
{
    PAIR_ATTR attr = make_pair_attr(8);
    attr.cache_pressure_size = 0;
    int r = toku_test_cachetable_unpin(f1, blocknum, fullhash, CACHETABLE_CLEAN, attr);
    my_cleaner_callback_called = true;
    return r;
}

// point of this test is to have two pairs that have the same fullhash, 
// and therefore, the same bucket mutex
static void
run_test (void) {
    const int test_limit = 1000;
    int r;
    CACHETABLE ct;
    toku_cachetable_create(&ct, test_limit, ZERO_LSN, NULL_LOGGER);
    my_cleaner_callback_called = false;

    const char *fname1 = TOKU_TEST_FILENAME;
    unlink(fname1);
    r = toku_cachetable_openf(&f1, ct, fname1, O_RDWR|O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO); assert(r == 0);
    
    void* vs[5];
    //void* v2;
    long ss[5];
    //long s2;
    CACHETABLE_WRITE_CALLBACK wc = def_write_callback(NULL);
    wc.cleaner_callback = my_cleaner_callback;
    r = toku_cachetable_get_and_pin(f1, make_blocknum(1), 1, &vs[0], &ss[0],
                                    wc,
                                    def_fetch,
                                    def_pf_req_callback,
                                    def_pf_callback,
                                    true, 
                                    NULL);
    PAIR_ATTR attr = make_pair_attr(8);
    attr.cache_pressure_size = 100;
    r = toku_test_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_CLEAN, attr);

    r = toku_cachetable_get_and_pin(f1, make_blocknum(2), 1, &vs[1], &ss[1],
                                    wc,
                                    def_fetch,
                                    def_pf_req_callback,
                                    def_pf_callback,
                                    true, 
                                    NULL);
    attr = make_pair_attr(8);
    attr.cache_pressure_size = 50;
    r = toku_test_cachetable_unpin(f1, make_blocknum(2), 1, CACHETABLE_CLEAN, attr);

    toku_cleaner_thread_for_test(ct);

    assert(my_cleaner_callback_called);

    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);
  run_test();
  return 0;
}
