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Heartbeat checks deal with time leaps

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computezrmle 2024-10-29 16:28:56 +01:00 committed by GitHub
parent 96370db915
commit eb56ba3637
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1 changed files with 20 additions and 4 deletions
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24
samples/vboxwrapper/vboxwrapper.cpp
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@ -428,6 +428,7 @@ int main(int argc, char** argv) {
double timeout = 0.0;
bool report_net_usage = false;
bool initial_heartbeat_check = true;
int backtoback_heartbeat_failure = 1;
double net_usage_timer = 600;
int vm_image = 0;
unsigned long vm_exit_code = 0;
@ -1050,8 +1051,9 @@ int main(int argc, char** argv) {
boinc_finish(EXIT_ABORTED_BY_CLIENT);
}
if (pVM->heartbeat_filename.size()) {
int backtoback = 3;
if (elapsed_time >= (last_heartbeat_elapsed_time + pVM->minimum_heartbeat_interval)) {
if (elapsed_time >= (last_heartbeat_elapsed_time + pVM->minimum_heartbeat_interval/backtoback)) {
int return_code = BOINC_SUCCESS;
bool should_exit = false;
@ -1079,10 +1081,24 @@ int main(int argc, char** argv) {
// Heartbeat successful
last_heartbeat_mod_time = heartbeat_stat.st_mtime;
last_heartbeat_elapsed_time = elapsed_time;
backtoback_heartbeat_failure = 1;
} else {
vboxlog_msg("VM Heartbeat file specified, but missing heartbeat.");
return_code = ERR_TIMEOUT;
should_exit = true;
// Timestamps are not always monotonuous
// or in sync between guest and host
// e.g. after a suspend/resume
// or when local time switches between
// normal time and DST
//
// Instead of fiddling around with complex checks
// simply count backtoback inconsistencies
//
if (backtoback_heartbeat_failure < backtoback) {
backtoback_heartbeat_failure++;
} else {
vboxlog_msg("VM Heartbeat file specified, but missing heartbeat.");
return_code = ERR_TIMEOUT;
should_exit = true;
}
}
}
}