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refs #5351 clean up a race condition for sanitation reasons

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git-svn-id: file:///svn/toku/tokudb@49868 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
John Esmet 2013-04-17 00:01:15 -04:00 • committed by Yoni Fogel
parent bcd522eac0
commit ba5f650495
1 changed files with 20 additions and 4 deletions
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24
src/tests/threaded_stress_test_helpers.h
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@ -1715,21 +1715,37 @@ static int num_tables_to_fill = 1;
static int rows_per_table = 1;
static void report_overall_fill_table_progress(int num_rows) {
// for sanitary reasons we'd like to prevent two threads
// from printing the same performance report twice.
static bool reporting;
// when was the first time measurement taken?
static uint64_t t0;
static int rows_inserted;
// when was the last report? what was its progress?
static uint64_t last_report;
static double last_progress;
if (t0 == 0) {
t0 = toku_current_time_usec();
last_report = t0;
}
uint64_t rows_so_far = toku_sync_add_and_fetch(&rows_inserted, num_rows);
double progress = rows_so_far /
(rows_per_table * num_tables_to_fill * 1.0);
if (progress > (last_progress + .01)) {
uint64_t t1 = toku_current_time_usec();
double inserts_per_sec = (rows_so_far*1000000) / ((t1 - t0) * 1.0);
printf("fill tables: %ldpct complete, %.2lf rows/sec\n",
(long)(progress * 100), inserts_per_sec);
last_progress = progress;
// report no more often than once every 5 seconds, for less output.
// there is a race condition. it is probably harmless.
const uint64_t minimum_report_period = 5 * 1000000;
if (t1 > last_report + minimum_report_period
&& toku_sync_bool_compare_and_swap(&reporting, 0, 1) == 0) {
double inserts_per_sec = (rows_so_far*1000000) / ((t1 - t0) * 1.0);
printf("fill tables: %ldpct complete, %.2lf rows/sec\n",
(long)(progress * 100), inserts_per_sec);
last_progress = progress;
last_report = t1;
reporting = false;
}
}
}