simple_loop.cpp
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/**
* Basic asynchronous calls using redisx.
*/
#include <iostream>
#include "../src/redox.hpp"
using namespace std;
using namespace redox;
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 = {"localhost", 6379};
rdx.run();
if(rdx.command_blocking("DEL simple_loop:count")) cout << "Deleted simple_loop:count" << endl;
else cerr << "Failed to delete simple_loop:count" << endl;
Command<nullptr_t>* null_cmd = rdx.command_blocking<nullptr_t>("GET WFEOIEFJ");
if(null_cmd->status() == REDOX_OK) cout << "got nonexistent key." << endl;
else cerr << "error with null cmd: " << null_cmd->status() << endl;
null_cmd->free();
Command<char*>* set_cmd = rdx.command_blocking<char*>("SET simple_loop:count 0");
cout << "set key, reply: " << set_cmd->reply() << endl;
set_cmd->free();
Command<char*>* count_cmd = rdx.command_blocking<char*>("GET simple_loop:count");
if(count_cmd->status() == REDOX_OK) {
cout << "At the start, simple_loop:count = " << count_cmd->reply() << endl;
}
count_cmd->free();
string cmd_str = "INCR simple_loop:count";
double freq = 10000; // Hz
double dt = 1 / freq; // s
double t = 3; // s
cout << "Running \"" << cmd_str << "\" at dt = " << dt
<< "s for " << t << "s..." << endl;
atomic_int count(0);
Command<int>* c = rdx.command<int>(
cmd_str,
[&count](const string &cmd, const int& value) { count++; },
NULL,
dt,
0
);
double t0 = time_s();
this_thread::sleep_for(chrono::microseconds((int)(t*1e6)));
rdx.cancel(c);
cout << "At the end, simple_loop:count = "
<< rdx.command_blocking<string>("GET simple_loop:count")->reply() << endl;
rdx.stop();
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;
return 0;
}