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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/utilities/transactions/lock/range/range_tree/lib/util/dbt.cc | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/rocksdb/utilities/transactions/lock/range/range_tree/lib/util/dbt.cc | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/rocksdb/utilities/transactions/lock/range/range_tree/lib/util/dbt.cc b/src/rocksdb/utilities/transactions/lock/range/range_tree/lib/util/dbt.cc new file mode 100644 index 000000000..63cc3a267 --- /dev/null +++ b/src/rocksdb/utilities/transactions/lock/range/range_tree/lib/util/dbt.cc @@ -0,0 +1,153 @@ +/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ +// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4: +#ifndef ROCKSDB_LITE +#ifndef OS_WIN +#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 "dbt.h" + +#include <string.h> + +#include "../db.h" +#include "../portability/memory.h" + +DBT *toku_init_dbt(DBT *dbt) { + memset(dbt, 0, sizeof(*dbt)); + return dbt; +} + +DBT toku_empty_dbt(void) { + static const DBT empty_dbt = {.data = 0, .size = 0, .ulen = 0, .flags = 0}; + return empty_dbt; +} + +DBT *toku_init_dbt_flags(DBT *dbt, uint32_t flags) { + toku_init_dbt(dbt); + dbt->flags = flags; + return dbt; +} + +void toku_destroy_dbt(DBT *dbt) { + switch (dbt->flags) { + case DB_DBT_MALLOC: + case DB_DBT_REALLOC: + toku_free(dbt->data); + toku_init_dbt(dbt); + break; + } +} + +DBT *toku_fill_dbt(DBT *dbt, const void *k, size_t len) { + toku_init_dbt(dbt); + dbt->size = len; + dbt->data = (char *)k; + return dbt; +} + +DBT *toku_memdup_dbt(DBT *dbt, const void *k, size_t len) { + toku_init_dbt_flags(dbt, DB_DBT_MALLOC); + dbt->size = len; + dbt->data = toku_xmemdup(k, len); + return dbt; +} + +DBT *toku_copyref_dbt(DBT *dst, const DBT src) { + dst->flags = 0; + dst->ulen = 0; + dst->size = src.size; + dst->data = src.data; + return dst; +} + +DBT *toku_clone_dbt(DBT *dst, const DBT &src) { + return toku_memdup_dbt(dst, src.data, src.size); +} + +void toku_sdbt_cleanup(struct simple_dbt *sdbt) { + if (sdbt->data) toku_free(sdbt->data); + memset(sdbt, 0, sizeof(*sdbt)); +} + +const DBT *toku_dbt_positive_infinity(void) { + static DBT positive_infinity_dbt = { + .data = 0, .size = 0, .ulen = 0, .flags = 0}; // port + return &positive_infinity_dbt; +} + +const DBT *toku_dbt_negative_infinity(void) { + static DBT negative_infinity_dbt = { + .data = 0, .size = 0, .ulen = 0, .flags = 0}; // port + return &negative_infinity_dbt; +} + +bool toku_dbt_is_infinite(const DBT *dbt) { + return dbt == toku_dbt_positive_infinity() || + dbt == toku_dbt_negative_infinity(); +} + +bool toku_dbt_is_empty(const DBT *dbt) { + // can't have a null data field with a non-zero size + paranoid_invariant(dbt->data != nullptr || dbt->size == 0); + return dbt->data == nullptr; +} + +int toku_dbt_infinite_compare(const DBT *a, const DBT *b) { + if (a == b) { + return 0; + } else if (a == toku_dbt_positive_infinity()) { + return 1; + } else if (b == toku_dbt_positive_infinity()) { + return -1; + } else if (a == toku_dbt_negative_infinity()) { + return -1; + } else { + invariant(b == toku_dbt_negative_infinity()); + return 1; + } +} + +bool toku_dbt_equals(const DBT *a, const DBT *b) { + if (!toku_dbt_is_infinite(a) && !toku_dbt_is_infinite(b)) { + return a->data == b->data && a->size == b->size; + } else { + // a or b is infinite, so they're equal if they are the same infinite + return a == b ? true : false; + } +} +#endif // OS_WIN +#endif // ROCKSDB_LITE |