speed_test_async.cpp
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/**
* Redox test
* ----------
* Increment a key on Redis using an asynchronous command on a timer.
*/
#include <iostream>
#include "redox.hpp"
using namespace std;
using redox::Redox;
using redox::Command;
double time_s() {
unsigned long ms = chrono::system_clock::now().time_since_epoch() / chrono::microseconds(1);
return (double)ms / 1e6;
}
int main(int argc, char* argv[]) {
Redox rdx;
if(!rdx.connect_unix("/var/run/redis/redis.sock")) return 1;
bool status = rdx.commandSync("SET simple_loop:count 0");
if(status) {
cout << "Reset the counter to zero." << endl;
} else {
cerr << "Failed to reset counter." << endl;
return 1;
}
string cmd_str = "INCR simple_loop:count";
double freq = 400000; // Hz
double dt = 1 / freq; // s
double t = 5; // s
cout << "Sending \"" << cmd_str << "\" asynchronously every "
<< dt << "s for " << t << "s..." << endl;
double t0 = time_s();
atomic_int count(0);
Command<int>& cmd = rdx.commandLoop<int>(
cmd_str,
[&count, &rdx](Command<int>& c) {
if (!c.ok()) {
cerr << "Bad reply: " << c.status() << endl;
}
count++;
},
dt
);
// Wait for t time, then stop the command.
this_thread::sleep_for(chrono::microseconds((int)(t*1e6)));
cmd.free();
long final_count = stol(rdx.get("simple_loop:count"));
double t_elapsed = time_s() - t0;
double actual_freq = (double)count / t_elapsed;
cout << "Sent " << count << " commands in " << t_elapsed << "s, "
<< "that's " << actual_freq << " commands/s." << endl;
cout << "Final value of counter: " << final_count << endl;
rdx.disconnect();
return 0;
}