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mdbx-test: refine 'ttl' testcase.

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Change-Id: Ic4d759cfa29496bd46fa50fef1e974847b52bb41
This commit is contained in:
Leonid Yuriev 2019-06-22 13:15:53 +03:00
parent 243b01dd63
commit e6ad443178
1 changed files with 34 additions and 28 deletions
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62
test/ttl.cc
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@ -14,12 +14,12 @@
#include "test.h"
#include <cmath>
#include <queue>
#include <deque>
static unsigned edge2window(uint64_t edge, unsigned window_max) {
const double rnd = u64_to_double1(bleach64(edge));
const unsigned window = window_max - std::lrint(std::pow(window_max, rnd));
return window - (window > 0);
return window;
}
static unsigned edge2count(uint64_t edge, unsigned count_max) {
@ -33,9 +33,7 @@ bool testcase_ttl::run() {
txn_begin(false);
MDBX_dbi dbi = db_table_open(true);
int rc = mdbx_drop(txn_guard.get(), dbi, false);
if (unlikely(rc != MDBX_SUCCESS))
failure_perror("mdbx_drop(delete=false)", rc);
db_table_clear(dbi);
txn_end(false);
/* LY: тест "эмуляцией time-to-live":
@ -63,7 +61,8 @@ bool testcase_ttl::run() {
log_info("ttl: using `batch_read` value %u for window_max", window_max);
log_info("ttl: using `batch_write` value %u for count_max", count_max);
uint64_t seed = prng64_map2_white(config.params.keygen.seed) + config.actor_id;
uint64_t seed =
prng64_map2_white(config.params.keygen.seed) + config.actor_id;
keyvalue_maker.setup(config.params, config.actor_id, 0 /* thread_number */);
key = keygen::alloc(config.params.keylen_max);
data = keygen::alloc(config.params.datalen_max);
@ -71,37 +70,44 @@ bool testcase_ttl::run() {
? MDBX_NODUPDATA
: MDBX_NODUPDATA | MDBX_NOOVERWRITE;
std::queue<std::pair<uint64_t, unsigned>> fifo;
std::deque<std::pair<uint64_t, unsigned>> fifo;
uint64_t serial = 0;
while (should_continue()) {
if (!txn_guard)
txn_begin(false);
const uint64_t salt = prng64_white(seed)/* mdbx_txn_id(txn_guard.get()) */;
const uint64_t salt = prng64_white(seed) /* mdbx_txn_id(txn_guard.get()) */;
const unsigned window = edge2window(salt, window_max);
log_trace("ttl: window %u at %" PRIu64, window, salt);
while (fifo.size() > window) {
uint64_t tail_serial = fifo.front().first;
const unsigned tail_count = fifo.front().second;
log_trace("ttl: pop-tail (serial %" PRIu64 ", count %u)", tail_serial,
tail_count);
fifo.pop();
for (unsigned n = 0; n < tail_count; ++n) {
log_trace("ttl: remove-tail %" PRIu64, serial);
generate_pair(tail_serial);
int err = mdbx_del(txn_guard.get(), dbi, &key->value, &data->value);
if (unlikely(err != MDBX_SUCCESS))
failure_perror("mdbx_del(tail)", err);
if (unlikely(!keyvalue_maker.increment(tail_serial, 1)))
failure("ttl: unexpected key-space overflow on the tail");
const unsigned window_width = edge2window(salt, window_max);
const unsigned head_count = edge2count(salt, count_max);
log_info("ttl: step #%zu (serial %" PRIu64
", window %u, count %u) salt %" PRIu64,
nops_completed, serial, window_width, head_count, salt);
if (window_width) {
while (fifo.size() > window_width) {
uint64_t tail_serial = fifo.back().first;
const unsigned tail_count = fifo.back().second;
log_trace("ttl: pop-tail (serial %" PRIu64 ", count %u)", tail_serial,
tail_count);
fifo.pop_back();
for (unsigned n = 0; n < tail_count; ++n) {
log_trace("ttl: remove-tail %" PRIu64, serial);
generate_pair(tail_serial);
int err = mdbx_del(txn_guard.get(), dbi, &key->value, &data->value);
if (unlikely(err != MDBX_SUCCESS))
failure_perror("mdbx_del(tail)", err);
if (unlikely(!keyvalue_maker.increment(tail_serial, 1)))
failure("ttl: unexpected key-space overflow on the tail");
}
}
} else {
log_trace("ttl: purge state");
db_table_clear(dbi);
fifo.clear();
}
txn_restart(false, false);
const unsigned head_count = edge2count(salt, count_max);
fifo.push(std::make_pair(serial, head_count));
log_trace("ttl: push-head (serial %" PRIu64 ", count %u)", serial,
head_count);
fifo.push_front(std::make_pair(serial, head_count));
for (unsigned n = 0; n < head_count; ++n) {
log_trace("ttl: insert-head %" PRIu64, serial);