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-rw-r--r--qemu/tests/test-coroutine.c387
1 files changed, 0 insertions, 387 deletions
diff --git a/qemu/tests/test-coroutine.c b/qemu/tests/test-coroutine.c
deleted file mode 100644
index dd4ced946..000000000
--- a/qemu/tests/test-coroutine.c
+++ /dev/null
@@ -1,387 +0,0 @@
-/*
- * Coroutine tests
- *
- * Copyright IBM, Corp. 2011
- *
- * Authors:
- * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
- *
- * This work is licensed under the terms of the GNU LGPL, version 2 or later.
- * See the COPYING.LIB file in the top-level directory.
- *
- */
-
-#include "qemu/osdep.h"
-#include <glib.h>
-#include "qemu/coroutine.h"
-#include "qemu/coroutine_int.h"
-
-/*
- * Check that qemu_in_coroutine() works
- */
-
-static void coroutine_fn verify_in_coroutine(void *opaque)
-{
- g_assert(qemu_in_coroutine());
-}
-
-static void test_in_coroutine(void)
-{
- Coroutine *coroutine;
-
- g_assert(!qemu_in_coroutine());
-
- coroutine = qemu_coroutine_create(verify_in_coroutine);
- qemu_coroutine_enter(coroutine, NULL);
-}
-
-/*
- * Check that qemu_coroutine_self() works
- */
-
-static void coroutine_fn verify_self(void *opaque)
-{
- g_assert(qemu_coroutine_self() == opaque);
-}
-
-static void test_self(void)
-{
- Coroutine *coroutine;
-
- coroutine = qemu_coroutine_create(verify_self);
- qemu_coroutine_enter(coroutine, coroutine);
-}
-
-/*
- * Check that coroutines may nest multiple levels
- */
-
-typedef struct {
- unsigned int n_enter; /* num coroutines entered */
- unsigned int n_return; /* num coroutines returned */
- unsigned int max; /* maximum level of nesting */
-} NestData;
-
-static void coroutine_fn nest(void *opaque)
-{
- NestData *nd = opaque;
-
- nd->n_enter++;
-
- if (nd->n_enter < nd->max) {
- Coroutine *child;
-
- child = qemu_coroutine_create(nest);
- qemu_coroutine_enter(child, nd);
- }
-
- nd->n_return++;
-}
-
-static void test_nesting(void)
-{
- Coroutine *root;
- NestData nd = {
- .n_enter = 0,
- .n_return = 0,
- .max = 128,
- };
-
- root = qemu_coroutine_create(nest);
- qemu_coroutine_enter(root, &nd);
-
- /* Must enter and return from max nesting level */
- g_assert_cmpint(nd.n_enter, ==, nd.max);
- g_assert_cmpint(nd.n_return, ==, nd.max);
-}
-
-/*
- * Check that yield/enter transfer control correctly
- */
-
-static void coroutine_fn yield_5_times(void *opaque)
-{
- bool *done = opaque;
- int i;
-
- for (i = 0; i < 5; i++) {
- qemu_coroutine_yield();
- }
- *done = true;
-}
-
-static void test_yield(void)
-{
- Coroutine *coroutine;
- bool done = false;
- int i = -1; /* one extra time to return from coroutine */
-
- coroutine = qemu_coroutine_create(yield_5_times);
- while (!done) {
- qemu_coroutine_enter(coroutine, &done);
- i++;
- }
- g_assert_cmpint(i, ==, 5); /* coroutine must yield 5 times */
-}
-
-static void coroutine_fn c2_fn(void *opaque)
-{
- qemu_coroutine_yield();
-}
-
-static void coroutine_fn c1_fn(void *opaque)
-{
- Coroutine *c2 = opaque;
- qemu_coroutine_enter(c2, NULL);
-}
-
-static void test_co_queue(void)
-{
- Coroutine *c1;
- Coroutine *c2;
-
- c1 = qemu_coroutine_create(c1_fn);
- c2 = qemu_coroutine_create(c2_fn);
-
- qemu_coroutine_enter(c1, c2);
- memset(c1, 0xff, sizeof(Coroutine));
- qemu_coroutine_enter(c2, NULL);
-}
-
-/*
- * Check that creation, enter, and return work
- */
-
-static void coroutine_fn set_and_exit(void *opaque)
-{
- bool *done = opaque;
-
- *done = true;
-}
-
-static void test_lifecycle(void)
-{
- Coroutine *coroutine;
- bool done = false;
-
- /* Create, enter, and return from coroutine */
- coroutine = qemu_coroutine_create(set_and_exit);
- qemu_coroutine_enter(coroutine, &done);
- g_assert(done); /* expect done to be true (first time) */
-
- /* Repeat to check that no state affects this test */
- done = false;
- coroutine = qemu_coroutine_create(set_and_exit);
- qemu_coroutine_enter(coroutine, &done);
- g_assert(done); /* expect done to be true (second time) */
-}
-
-
-#define RECORD_SIZE 10 /* Leave some room for expansion */
-struct coroutine_position {
- int func;
- int state;
-};
-static struct coroutine_position records[RECORD_SIZE];
-static unsigned record_pos;
-
-static void record_push(int func, int state)
-{
- struct coroutine_position *cp = &records[record_pos++];
- g_assert_cmpint(record_pos, <, RECORD_SIZE);
- cp->func = func;
- cp->state = state;
-}
-
-static void coroutine_fn co_order_test(void *opaque)
-{
- record_push(2, 1);
- g_assert(qemu_in_coroutine());
- qemu_coroutine_yield();
- record_push(2, 2);
- g_assert(qemu_in_coroutine());
-}
-
-static void do_order_test(void)
-{
- Coroutine *co;
-
- co = qemu_coroutine_create(co_order_test);
- record_push(1, 1);
- qemu_coroutine_enter(co, NULL);
- record_push(1, 2);
- g_assert(!qemu_in_coroutine());
- qemu_coroutine_enter(co, NULL);
- record_push(1, 3);
- g_assert(!qemu_in_coroutine());
-}
-
-static void test_order(void)
-{
- int i;
- const struct coroutine_position expected_pos[] = {
- {1, 1,}, {2, 1}, {1, 2}, {2, 2}, {1, 3}
- };
- do_order_test();
- g_assert_cmpint(record_pos, ==, 5);
- for (i = 0; i < record_pos; i++) {
- g_assert_cmpint(records[i].func , ==, expected_pos[i].func );
- g_assert_cmpint(records[i].state, ==, expected_pos[i].state);
- }
-}
-/*
- * Lifecycle benchmark
- */
-
-static void coroutine_fn empty_coroutine(void *opaque)
-{
- /* Do nothing */
-}
-
-static void perf_lifecycle(void)
-{
- Coroutine *coroutine;
- unsigned int i, max;
- double duration;
-
- max = 1000000;
-
- g_test_timer_start();
- for (i = 0; i < max; i++) {
- coroutine = qemu_coroutine_create(empty_coroutine);
- qemu_coroutine_enter(coroutine, NULL);
- }
- duration = g_test_timer_elapsed();
-
- g_test_message("Lifecycle %u iterations: %f s\n", max, duration);
-}
-
-static void perf_nesting(void)
-{
- unsigned int i, maxcycles, maxnesting;
- double duration;
-
- maxcycles = 10000;
- maxnesting = 1000;
- Coroutine *root;
-
- g_test_timer_start();
- for (i = 0; i < maxcycles; i++) {
- NestData nd = {
- .n_enter = 0,
- .n_return = 0,
- .max = maxnesting,
- };
- 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);
-}
-
-/*
- * Yield benchmark
- */
-
-static void coroutine_fn yield_loop(void *opaque)
-{
- unsigned int *counter = opaque;
-
- while ((*counter) > 0) {
- (*counter)--;
- qemu_coroutine_yield();
- }
-}
-
-static void perf_yield(void)
-{
- unsigned int i, maxcycles;
- double duration;
-
- maxcycles = 100000000;
- i = maxcycles;
- Coroutine *coroutine = qemu_coroutine_create(yield_loop);
-
- g_test_timer_start();
- while (i > 0) {
- qemu_coroutine_enter(coroutine, &i);
- }
- duration = g_test_timer_elapsed();
-
- g_test_message("Yield %u iterations: %f s\n",
- maxcycles, duration);
-}
-
-static __attribute__((noinline)) void dummy(unsigned *i)
-{
- (*i)--;
-}
-
-static void perf_baseline(void)
-{
- unsigned int i, maxcycles;
- double duration;
-
- maxcycles = 100000000;
- i = maxcycles;
-
- g_test_timer_start();
- while (i > 0) {
- dummy(&i);
- }
- duration = g_test_timer_elapsed();
-
- g_test_message("Function call %u iterations: %f s\n",
- maxcycles, duration);
-}
-
-static __attribute__((noinline)) void perf_cost_func(void *opaque)
-{
- qemu_coroutine_yield();
-}
-
-static void perf_cost(void)
-{
- const unsigned long maxcycles = 40000000;
- unsigned long i = 0;
- double duration;
- unsigned long ops;
- Coroutine *co;
-
- g_test_timer_start();
- while (i++ < maxcycles) {
- co = qemu_coroutine_create(perf_cost_func);
- qemu_coroutine_enter(co, &i);
- qemu_coroutine_enter(co, NULL);
- }
- duration = g_test_timer_elapsed();
- ops = (long)(maxcycles / (duration * 1000));
-
- g_test_message("Run operation %lu iterations %f s, %luK operations/s, "
- "%luns per coroutine",
- maxcycles,
- duration, ops,
- (unsigned long)(1000000000.0 * duration / maxcycles));
-}
-
-int main(int argc, char **argv)
-{
- g_test_init(&argc, &argv, NULL);
- g_test_add_func("/basic/co_queue", test_co_queue);
- g_test_add_func("/basic/lifecycle", test_lifecycle);
- g_test_add_func("/basic/yield", test_yield);
- g_test_add_func("/basic/nesting", test_nesting);
- g_test_add_func("/basic/self", test_self);
- g_test_add_func("/basic/in_coroutine", test_in_coroutine);
- g_test_add_func("/basic/order", test_order);
- if (g_test_perf()) {
- g_test_add_func("/perf/lifecycle", perf_lifecycle);
- g_test_add_func("/perf/nesting", perf_nesting);
- g_test_add_func("/perf/yield", perf_yield);
- g_test_add_func("/perf/function-call", perf_baseline);
- g_test_add_func("/perf/cost", perf_cost);
- }
- return g_test_run();
-}