/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
/*
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  This program is free software; you can redistribute it and/or modify
  it under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation, and provided that the
  following conditions are met:

      * Redistributions of source code must retain this COPYING
        CONDITIONS NOTICE, the COPYRIGHT NOTICE (below), the
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      * Redistributions in binary form must reproduce this COPYING
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  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
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COPYRIGHT NOTICE:

  TokuDB, Tokutek Fractal Tree Indexing Library.
  Copyright (C) 2007-2013 Tokutek, Inc.

DISCLAIMER:

  This program 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.

UNIVERSITY PATENT NOTICE:

  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.

PATENT MARKING NOTICE:

  This software is covered by US Patent No. 8,185,551.

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*/

#ident "Copyright (c) 2007-2013 Tokutek Inc.  All rights reserved."
#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."
// stress test for update broadcast.  10M 8-byte keys should be 2, maybe 3
// levels of treeness, makes sure flushes work

#include "test.h"

const int envflags = DB_INIT_MPOOL|DB_CREATE|DB_THREAD |DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_TXN|DB_PRIVATE;

DB_ENV *env;

const unsigned int NUM_KEYS = 10000000;
const unsigned int MAGIC_EXTRA = 0x4ac0ffee;

static inline unsigned int _v(const unsigned int i) { return 10 - i; }
static inline unsigned int _e(const unsigned int i) { return i + 4; }
static inline unsigned int _u(const unsigned int v, const unsigned int e) { return v + 2 * e; }

static int update_fun(DB *UU(db),
                      const DBT *key,
                      const DBT *old_val, const DBT *extra,
                      void (*set_val)(const DBT *new_val,
                                      void *set_extra),
                      void *set_extra) {
    unsigned int *k, *ov, *e, v;
    assert(key->size == sizeof(*k));
    CAST_FROM_VOIDP(k, key->data);
    assert(old_val->size == sizeof(*ov));
    CAST_FROM_VOIDP(ov, old_val->data);
    assert(extra->size == sizeof(*e));
    CAST_FROM_VOIDP(e, extra->data);
    assert(*e == MAGIC_EXTRA);
    v = _u(*ov, _e(*k));

    {
        DBT newval;
        set_val(dbt_init(&newval, &v, sizeof(v)), set_extra);
    }

    return 0;
}

static int
int_cmp(DB *UU(db), const DBT *a, const DBT *b) {
    unsigned int *ap, *bp;
    assert(a->size == sizeof(*ap));
    CAST_FROM_VOIDP(ap, a->data);
    assert(b->size == sizeof(*bp));
    CAST_FROM_VOIDP(bp, b->data);
    return (*ap > *bp) - (*ap < *bp);
}

static void setup (void) {
    toku_os_recursive_delete(TOKU_TEST_FILENAME);
    { int chk_r = toku_os_mkdir(TOKU_TEST_FILENAME, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(chk_r); }
    { int chk_r = db_env_create(&env, 0); CKERR(chk_r); }
    env->set_errfile(env, stderr);
    env->set_update(env, update_fun);
    { int chk_r = env->set_default_bt_compare(env, int_cmp); CKERR(chk_r); }
    { int chk_r = env->open(env, TOKU_TEST_FILENAME, envflags, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(chk_r); }
}

static void cleanup (void) {
    { int chk_r = env->close(env, 0); CKERR(chk_r); }
}

static int do_inserts(DB_TXN *txn, DB *db) {
    int r = 0;
    DBT key, val;
    unsigned int i, v;
    DBT *keyp = dbt_init(&key, &i, sizeof(i));
    DBT *valp = dbt_init(&val, &v, sizeof(v));
    for (i = 0; i < NUM_KEYS; ++i) {
        v = _v(i);
        r = db->put(db, txn, keyp, valp, 0); CKERR(r);
    }
    return r;
}

static int do_updates(DB_TXN *txn, DB *db) {
    DBT extra;
    unsigned int e = MAGIC_EXTRA;
    DBT *extrap = dbt_init(&extra, &e, sizeof(e));
    int r = db->update_broadcast(db, txn, extrap, 0); CKERR(r);
    return r;
}

static void chk_updated(const unsigned int k, const unsigned int v) {
    assert(v == _u(_v(k), _e(k)));
}

static void chk_original(const unsigned int k, const unsigned int v) {
    assert(v == _v(k));
}

static int do_verify_results(DB_TXN *txn, DB *db, void (*check_val)(const unsigned int k, const unsigned int v)) {
    int r = 0;
    DBT key, val;
    unsigned int i, *vp;
    DBT *keyp = dbt_init(&key, &i, sizeof(i));
    DBT *valp = dbt_init(&val, NULL, 0);
    for (i = 0; i < NUM_KEYS; ++i) {
        r = db->get(db, txn, keyp, valp, 0); CKERR(r);
        assert(val.size == sizeof(*vp));
        CAST_FROM_VOIDP(vp, val.data);
        check_val(i, *vp);
    }
    return r;
}

int test_main(int argc, char * const argv[]) {
    parse_args(argc, argv);
    setup();

    DB *db;

    IN_TXN_COMMIT(env, NULL, txn_1, 0, {
            { int chk_r = db_create(&db, env, 0); CKERR(chk_r); }
            { int chk_r = db->open(db, txn_1, "foo.db", NULL, DB_BTREE, DB_CREATE, 0666); CKERR(chk_r); }

            { int chk_r = do_inserts(txn_1, db); CKERR(chk_r); }
        });

    IN_TXN_ABORT(env, NULL, txn_2, 0, {
            { int chk_r = do_updates(txn_2, db); CKERR(chk_r); }

            IN_TXN_COMMIT(env, txn_2, txn_21, 0, {
                    { int chk_r = do_verify_results(txn_21, db, chk_updated); CKERR(chk_r); }
                });
        });

    IN_TXN_COMMIT(env, NULL, txn_3, 0, {
            { int chk_r = do_verify_results(txn_3, db, chk_original); CKERR(chk_r); }
        });

    { int chk_r = db->close(db, 0); CKERR(chk_r); }

    cleanup();

    return 0;
}
