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Added num of threads auto decide mode (set to 0). #855

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merged 1 commit into from
Sep 7, 2021
Merged

Added num of threads auto decide mode (set to 0). #855

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6 changes: 3 additions & 3 deletions example/broker.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -139,8 +139,8 @@ void run_broker(boost::program_options::variables_map const& vm)
return 1;
} ();
if (threads == 0) {
MQTT_LOG("mqtt_broker", error) << "threads should be greater than 0";
return;
threads = std::thread::hardware_concurrency();
MQTT_LOG("mqtt_broker", info) << "threads set to auto decide (0). Automatically set to " << threads;
}
std::vector<std::thread> ts;
ts.reserve(threads);
Expand All @@ -165,7 +165,7 @@ int main(int argc, char **argv) {
general_desc.add_options()
("help", "produce help message")
("cfg", boost::program_options::value<std::string>()->default_value("broker.conf"), "Load configuration file")
("threads", boost::program_options::value<std::size_t>()->default_value(1), "Number of worker threads")
("threads", boost::program_options::value<std::size_t>()->default_value(1), "Number of worker threads. If set 0 then automatically decided by hardware_concurrency().")
#if defined(MQTT_USE_LOG)
("verbose", boost::program_options::value<unsigned int>()->default_value(1), "set verbose level, possible values:\n 0 - Fatal\n 1 - Error\n 2 - Warning\n 3 - Info\n 4 - Debug\n 5 - Trace")
#endif // defined(MQTT_USE_LOG)
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