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/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2026 The TokTok team.
*/
#include <benchmark/benchmark.h>
#include <cstdlib>
#include <vector>
#include "ev_test_util.hh"
#include "logger.h"
#include "net.h"
#include "os_event.h"
#include "os_memory.h"
#include "os_network.h"
namespace {
class EvBenchFixture : public benchmark::Fixture {
public:
void SetUp(const ::benchmark::State &state) override
{
if (os_network() == nullptr) {
setup_error = "os_network failed";
return;
}
mem = os_memory();
log = logger_new(mem);
// We don't want log output during benchmark
ev = os_event_new(mem, log);
}
void TearDown(const ::benchmark::State &state) override
{
for (size_t i = 0; i < sockets_r.size(); ++i) {
close_pair(sockets_r[i], sockets_w[i]);
}
sockets_r.clear();
sockets_w.clear();
ev_kill(ev);
logger_kill(log);
}
const Memory *mem = nullptr;
Logger *log = nullptr;
Ev *ev = nullptr;
std::vector<Socket> sockets_r;
std::vector<Socket> sockets_w;
int tag = 1;
std::string setup_error;
};
// Specialized SetUp to handle socket creation based on range
class EvBenchSocketsFixture : public EvBenchFixture {
public:
void SetUp(const ::benchmark::State &state) override
{
EvBenchFixture::SetUp(state);
if (!setup_error.empty()) {
return;
}
const int num_sockets = state.range(0);
for (int i = 0; i < num_sockets; ++i) {
Socket r{}, w{};
if (create_pair(&r, &w) != 0) {
setup_error = "Failed to create socket pair";
return;
}
sockets_r.push_back(r);
sockets_w.push_back(w);
if (!ev_add(ev, r, EV_READ, &tag)) {
setup_error = "Failed to add socket to event loop";
return;
}
}
}
};
BENCHMARK_DEFINE_F(EvBenchSocketsFixture, EventLoopRun)(benchmark::State &state)
{
if (!setup_error.empty()) {
state.SkipWithError(setup_error.c_str());
return;
}
// Sockets are already created in SetUp.
Ev_Result results[1];
char buf = 'x';
// We trigger the last socket
if (write_socket(sockets_w.back(), &buf, 1) != 1) {
state.SkipWithError("Failed to write to socket");
return;
}
for (auto _ : state) {
int32_t n = ev_run(ev, results, 1, 100);
if (n != 1) {
state.SkipWithError("ev_run did not return event");
break;
}
}
}
BENCHMARK_REGISTER_F(EvBenchSocketsFixture, EventLoopRun)->Range(8, 1024);
BENCHMARK_DEFINE_F(EvBenchSocketsFixture, EventLoopMultipleActive)(benchmark::State &state)
{
if (!setup_error.empty()) {
state.SkipWithError(setup_error.c_str());
return;
}
const int num_sockets = state.range(0);
const int num_active = state.range(1);
if (num_active > num_sockets) {
state.SkipWithError("Active sockets cannot exceed total sockets");
return;
}
char buf = 'x';
// Trigger 'num_active' sockets
for (int i = 0; i < num_active; ++i) {
if (write_socket(sockets_w[i], &buf, 1) != 1) {
state.SkipWithError("Failed to write socket");
return;
}
}
std::vector<Ev_Result> results(num_active);
for (auto _ : state) {
int32_t n = ev_run(ev, results.data(), num_active, 100);
if (n != num_active) {
state.SkipWithError("ev_run did not return expected number of events");
break;
}
}
}
// Fix N=1024, vary M
BENCHMARK_REGISTER_F(EvBenchSocketsFixture, EventLoopMultipleActive)
->Args({1024, 1})
->Args({1024, 10})
->Args({1024, 100})
->Args({1024, 1024});
} // namespace
BENCHMARK_MAIN();
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