Commit 7e849a99 authored by Alex Barcelo's avatar Alex Barcelo Committed by Kevin Wolf
Browse files

test-coroutine: add performance test for nesting 



The performance test will also check for nesting. It will do
a certain quantity of cycles, and each of one will do a depth
nesting process.

This is useful for benchmarking the creation of coroutines,
given that nesting is creation-intensive (and the other perf
test does not benchmark that).

Signed-off-by: default avatarAlex Barcelo <abarcelo@ac.upc.edu>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent fe91bfa8

test-coroutine.c

+27 −0
Original line number Diff line number Diff line
@@ -177,6 +177,32 @@ static void perf_lifecycle(void) 
    g_test_message("Lifecycle %u iterations: %f s\n", max, duration);

}



static void perf_nesting(void)

{

    unsigned int i, maxcycles, maxnesting;

    double duration;



    maxcycles = 100000000;

    maxnesting = 20000;

    Coroutine *root;

    NestData nd = {

        .n_enter  = 0,

        .n_return = 0,

        .max      = maxnesting,

    };



    g_test_timer_start();

    for (i = 0; i < maxcycles; i++) {

        root = qemu_coroutine_create(nest);

        qemu_coroutine_enter(root, &nd);

    }

    duration = g_test_timer_elapsed();



    g_test_message("Nesting %u iterations of %u depth each: %f s\n",

        maxcycles, maxnesting, duration);

}





int main(int argc, char **argv)

{

    g_test_init(&argc, &argv, NULL);
@@ -187,6 +213,7 @@ int main(int argc, char **argv) 
    g_test_add_func("/basic/in_coroutine", test_in_coroutine);

    if (g_test_perf()) {

        g_test_add_func("/perf/lifecycle", perf_lifecycle);

        g_test_add_func("/perf/nesting", perf_nesting);

    }

    return g_test_run();

}