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add --send-rng option

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This commit is contained in:
Mark Callaghan
2009-09-30 11:10:46 -07:00
parent df31f6767f
commit 7dce4a7e54
1 changed files with 20 additions and 0 deletions
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20
sysbench/sysbench.c
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@ -68,6 +68,9 @@
/* If we should initialize random numbers generator */
static int init_rng;
/* seed for random number generator */
static int seed_rng;
/* Stack size for each thread */
static int thread_stack_size;
@ -81,6 +84,7 @@ sb_arg_t general_args[] =
SB_ARG_TYPE_STRING, "off"},
{"thread-stack-size", "size of stack per thread", SB_ARG_TYPE_SIZE, "32K"},
{"init-rng", "initialize random number generator", SB_ARG_TYPE_FLAG, "off"},
{"seed-rng", "seed for random number generator, ignored when 0", SB_ARG_TYPE_INT, "0"},
{"test", "test to run", SB_ARG_TYPE_STRING, NULL},
{"debug", "print more debugging info", SB_ARG_TYPE_FLAG, "off"},
{"validate", "perform validation checks where possible", SB_ARG_TYPE_FLAG, "off"},
@ -345,6 +349,16 @@ void print_run_mode(sb_test_t *test)
sb_srnd(time(NULL));
}
if (seed_rng)
{
log_text(LOG_NOTICE, "Initializing random number generator from seed (%d).\n", seed_rng);
sb_srnd(seed_rng);
}
else
{
log_text(LOG_NOTICE, "Random number generator seed is 0 and will be ignored\n");
}
if (sb_globals.force_shutdown)
log_text(LOG_NOTICE, "Forcing shutdown in %u seconds",
sb_globals.max_time + sb_globals.timeout);
@ -604,6 +618,12 @@ int init(void)
sb_globals.validate = sb_get_value_flag("validate");
init_rng = sb_get_value_flag("init-rng");
seed_rng = sb_get_value_flag("seed-rng");
if (init_rng && seed_rng)
{
log_text(LOG_FATAL, "Cannot set both --init_rng and --seed_rng\n");
return 1;
}
return 0;
}