int main(int argc, char *argv[])
{
slotwait_held(0);
initialize_modules(modules_list);
slotwait_start();
for ( ; slotwait_step(); ) {
}
cleanup_modules(modules_list);
return 0;
}
ErrorStack EnginePimpl::initialize_once() {
if (is_master()) {
CHECK_ERROR(check_valid_options());
}
// SOC manager is special. We must initialize it first.
CHECK_ERROR(soc_manager_.initialize());
on_module_initialized(kSoc);
ErrorStack module_initialize_error = initialize_modules();
if (module_initialize_error.is_error()) {
LOG(ERROR) << "*******************************************************************************";
LOG(ERROR) << "*** ERROR while module initailization in " << describe_short() << ". "
<< module_initialize_error << "";
LOG(ERROR) << "*******************************************************************************";
soc_manager_.report_engine_fatal_error();
CHECK_ERROR(module_initialize_error);
}
// The following can assume SOC manager is already initialized
if (is_master()) {
soc::SharedMemoryRepo* repo = soc_manager_.get_shared_memory_repo();
repo->change_master_status(soc::MasterEngineStatus::kRunning);
// wait for children's kRunning status
// TASK(Hideaki) should be a function in soc manager
uint16_t soc_count = engine_->get_options().thread_.group_count_;
while (true) {
std::this_thread::sleep_for(std::chrono::milliseconds(5));
assorted::memory_fence_acq_rel();
bool error_happened = false;
bool remaining = false;
for (uint16_t node = 0; node < soc_count; ++node) {
soc::ChildEngineStatus* status = repo->get_node_memory_anchors(node)->child_status_memory_;
if (status->status_code_ == soc::ChildEngineStatus::kFatalError) {
error_happened = true;
break;
}
if (status->status_code_ == soc::ChildEngineStatus::kRunning) {
continue; // ok
}
remaining = true;
}
if (error_happened) {
LOG(ERROR) << "[FOEDUS] ERROR! error while waiting child kRunning";
soc_manager_.report_engine_fatal_error();
return ERROR_STACK(kErrorCodeSocChildInitFailed);
} else if (!remaining) {
break;
}
}
}
LOG(INFO) << "================================================================================";
LOG(INFO) << "================== FOEDUS ENGINE ("
<< describe_short() << ") INITIALIZATION DONE ===========";
LOG(INFO) << "================================================================================";
// In a few places, we check if we are running under valgrind and, if so, turn off
// optimizations valgrind can't handle (eg hugepages).
bool running_on_valgrind = RUNNING_ON_VALGRIND;
if (running_on_valgrind) {
LOG(INFO) << "=============== ATTENTION: VALGRIND MODE! ==================";
LOG(INFO) << "This Engine is running under valgrind, which disables several optimizations";
LOG(INFO) << "If you see this message while usual execution, something is wrong.";
LOG(INFO) << "=============== ATTENTION: VALGRIND MODE! ==================";
}
return kRetOk;
}
