libmdbx/test/jitter.c++

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/// \author Леонид Юрьев aka Leonid Yuriev <leo@yuriev.ru> \date 2015-2024
/// \copyright SPDX-License-Identifier: Apache-2.0
#include "test.h++"
class testcase_jitter : public testcase {
protected:
void check_dbi_error(int expect, const char *stage);
public:
testcase_jitter(const actor_config &config, const mdbx_pid_t pid)
: testcase(config, pid) {}
bool run() override;
};
REGISTER_TESTCASE(jitter);
void testcase_jitter::check_dbi_error(int expect, const char *stage) {
MDBX_stat stat;
int err = mdbx_dbi_stat(txn_guard.get(), dbi, &stat, sizeof(stat));
if (err != expect)
failure("unexpected result for %s dbi-handle: expect %d, got %d", stage,
expect, err);
}
bool testcase_jitter::run() {
int err;
size_t upper_limit = config.params.size_upper;
if (upper_limit < 1)
upper_limit = config.params.size_now * 2;
tablename_buf buffer;
const char *const tablename = db_tablename(buffer);
tablename_buf buffer_renamed;
const char *const tablename_renamed =
db_tablename(buffer_renamed, ".renamed");
while (should_continue()) {
jitter_delay();
db_open();
if (!dbi && !mode_readonly()) {
// create table
txn_begin(false);
dbi = db_table_open(true);
check_dbi_error(MDBX_SUCCESS, "created-uncommitted");
bool renamed = false;
if (flipcoin()) {
err = mdbx_dbi_rename(txn_guard.get(), dbi, tablename_renamed);
if (err != MDBX_SUCCESS)
failure_perror("jitter.rename-1", err);
renamed = true;
}
// note: here and below the 4-byte length keys and value are used
// to be compatible with any Db-flags given from command line.
MDBX_val k = {(void *)"k000", 4}, v = {(void *)"v001", 4};
err = mdbx_put(txn_guard.get(), dbi, &k, &v, MDBX_UPSERT);
if (err != MDBX_SUCCESS)
failure_perror("jitter.put-1", err);
txn_end(false);
// drop & re-create table, but abort txn
txn_begin(false);
check_dbi_error(MDBX_SUCCESS, "created-committed");
err = mdbx_drop(txn_guard.get(), dbi, true);
if (unlikely(err != MDBX_SUCCESS))
failure_perror("mdbx_drop(delete=true)", err);
check_dbi_error(MDBX_BAD_DBI, "dropped-uncommitted");
dbi = db_table_open(true);
check_dbi_error(MDBX_SUCCESS, "recreated-uncommitted");
txn_end(true);
// check after aborted txn
txn_begin(false);
v = {(void *)"v002", 4};
err = mdbx_put(txn_guard.get(), dbi, &k, &v, MDBX_UPSERT);
if (err != MDBX_BAD_DBI)
failure_perror("jitter.put-2", err);
check_dbi_error(MDBX_BAD_DBI, "dropped-recreated-aborted");
// restore DBI
dbi = db_table_open(false, renamed);
if (renamed) {
err = mdbx_dbi_open(
txn_guard.get(), tablename_renamed,
flipcoin() ? MDBX_DB_ACCEDE : config.params.table_flags, &dbi);
if (unlikely(err != MDBX_SUCCESS))
failure_perror("open-renamed", err);
err = mdbx_dbi_rename(txn_guard.get(), dbi, tablename);
if (err != MDBX_SUCCESS)
failure_perror("jitter.rename-2", err);
}
check_dbi_error(MDBX_SUCCESS, "dropped-recreated-aborted+reopened");
v = {(void *)"v003", 4};
err = mdbx_put(txn_guard.get(), dbi, &k, &v, MDBX_UPSERT);
if (err != MDBX_SUCCESS)
failure_perror("jitter.put-3", err);
txn_end(false);
}
if (upper_limit < 1) {
MDBX_envinfo info;
err = mdbx_env_info_ex(db_guard.get(), txn_guard.get(), &info,
sizeof(info));
if (err)
failure_perror("mdbx_env_info_ex()", err);
upper_limit = (info.mi_geo.upper < INTPTR_MAX)
? (intptr_t)info.mi_geo.upper
: INTPTR_MAX;
}
if (flipcoin()) {
jitter_delay();
txn_begin(true);
fetch_canary();
if (flipcoin()) {
MDBX_txn_info info;
err = mdbx_txn_reset(txn_guard.get());
if (err)
failure_perror("mdbx_txn_reset()", err);
err = mdbx_txn_info(txn_guard.get(), &info, false);
if (err != MDBX_BAD_TXN)
failure_perror("mdbx_txn_info(MDBX_BAD_TXN)", err);
err = mdbx_txn_reset(txn_guard.get());
if (err)
failure_perror("mdbx_txn_reset(again)", err);
err = mdbx_txn_break(txn_guard.get());
if (err)
failure_perror("mdbx_txn_break()", err);
err = mdbx_txn_abort(txn_guard.get());
if (err)
failure_perror("mdbx_txn_abort()", err);
txn_guard.release();
txn_begin(true);
err = mdbx_txn_reset(txn_guard.get());
if (err)
failure_perror("mdbx_txn_reset()", err);
err = mdbx_txn_renew(txn_guard.get());
if (err)
failure_perror("mdbx_txn_renew()", err);
err = mdbx_txn_info(txn_guard.get(), &info, false);
if (err)
failure_perror("mdbx_txn_info()", err);
}
jitter_delay();
txn_end(flipcoin());
}
const bool coin4size = flipcoin();
jitter_delay();
txn_begin(mode_readonly());
jitter_delay();
if (!mode_readonly()) {
fetch_canary();
update_canary(1);
if (global::config::geometry_jitter) {
err = mdbx_env_set_geometry(
db_guard.get(), -1, -1,
coin4size ? upper_limit * 2 / 3 : upper_limit * 3 / 2, -1, -1, -1);
if (err != MDBX_SUCCESS && err != MDBX_UNABLE_EXTEND_MAPSIZE &&
err != MDBX_MAP_FULL && err != MDBX_TOO_LARGE && err != MDBX_EPERM)
failure_perror("mdbx_env_set_geometry-1", err);
}
}
if (flipcoin()) {
uint64_t unused;
err = mdbx_dbi_sequence(txn_guard.get(), MAIN_DBI, &unused,
mode_readonly() ? 0 : 1);
if (err)
failure_perror("mdbx_dbi_sequence()", err);
}
txn_end(flipcoin());
if (global::config::geometry_jitter) {
err = mdbx_env_set_geometry(
db_guard.get(), -1, -1,
!coin4size ? upper_limit * 2 / 3 : upper_limit * 3 / 2, -1, -1, -1);
if (err != MDBX_SUCCESS && err != MDBX_UNABLE_EXTEND_MAPSIZE &&
err != MDBX_MAP_FULL && err != MDBX_TOO_LARGE && err != MDBX_EPERM)
failure_perror("mdbx_env_set_geometry-2", err);
}
if (flipcoin()) {
jitter_delay();
txn_begin(true);
jitter_delay();
txn_end(flipcoin());
}
if (global::config::geometry_jitter) {
jitter_delay();
err = mdbx_env_set_geometry(db_guard.get(), -1, -1, upper_limit, -1, -1,
-1);
if (err != MDBX_SUCCESS && err != MDBX_UNABLE_EXTEND_MAPSIZE &&
err != MDBX_MAP_FULL && err != MDBX_TOO_LARGE && err != MDBX_EPERM)
failure_perror("mdbx_env_set_geometry-3", err);
}
db_close();
/* just 'align' nops with other tests with batching */
const auto batching =
std::max(config.params.batch_read, config.params.batch_write);
report(std::max(1u, batching / 2));
}
return true;
}