corobench.cc

/* link with liblwan and google benchmark */
#include <stdbool.h>
#include <stdio.h>
#include <benchmark/benchmark.h>

extern "C" {
    #include <lwan-coro.h>
}

struct coro *coro;

static int coro_fn(struct coro *coro, void *data)
{
    while (true) {
        coro_yield(coro, 0);
    }
}

static void coroswitch(benchmark::State& state)
{
    while (state.KeepRunning()) {
        benchmark::DoNotOptimize(coro_resume(coro));
    }
}

int main(int argc, char *argv[])
{
    struct coro_switcher switcher;

    coro = coro_new(&switcher, coro_fn, NULL);
    if (!coro)
        return 1;

    benchmark::RegisterBenchmark("coroswitch", coroswitch);
    benchmark::Initialize(&argc, argv);
    benchmark::RunSpecifiedBenchmarks();

    coro_free(coro);

    return 0;
}