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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/testing/aws_test_harness.h>
#include <aws/common/condition_variable.h>
#include <aws/common/clock.h>
#include <aws/common/thread.h>
struct condition_predicate_args {
int call_count;
};
struct conditional_test_data {
struct aws_mutex mutex;
struct aws_condition_variable condition_variable_1;
struct aws_condition_variable condition_variable_2;
struct condition_predicate_args *predicate_args;
int thread_1;
int thread_2;
int thread_3;
};
static bool s_conditional_predicate(void *arg) {
struct condition_predicate_args *condition_predicate_args = (struct condition_predicate_args *)arg;
condition_predicate_args->call_count++;
return condition_predicate_args->call_count % 2 == 0;
}
static void s_conditional_thread_2_fn(void *arg) {
struct conditional_test_data *test_data = (struct conditional_test_data *)arg;
aws_mutex_lock(&test_data->mutex);
while (!test_data->thread_1) {
aws_condition_variable_wait_pred(
&test_data->condition_variable_1, &test_data->mutex, s_conditional_predicate, test_data->predicate_args);
}
test_data->thread_2 = 1;
aws_condition_variable_notify_one(&test_data->condition_variable_2);
aws_mutex_unlock(&test_data->mutex);
}
static void s_conditional_thread_3_fn(void *arg) {
struct conditional_test_data *test_data = (struct conditional_test_data *)arg;
aws_mutex_lock(&test_data->mutex);
while (!test_data->thread_1) {
aws_condition_variable_wait_pred(
&test_data->condition_variable_1, &test_data->mutex, s_conditional_predicate, test_data->predicate_args);
}
test_data->thread_3 = 1;
aws_condition_variable_notify_one(&test_data->condition_variable_2);
aws_mutex_unlock(&test_data->mutex);
}
static int s_test_conditional_notify_one_fn(struct aws_allocator *allocator, void *ctx) {
(void)ctx;
struct condition_predicate_args predicate_args = {.call_count = 0};
struct conditional_test_data test_data = {.condition_variable_1 = AWS_CONDITION_VARIABLE_INIT,
.condition_variable_2 = AWS_CONDITION_VARIABLE_INIT,
.mutex = AWS_MUTEX_INIT,
.predicate_args = &predicate_args,
.thread_1 = 0,
.thread_2 = 0,
.thread_3 = 0};
ASSERT_SUCCESS(aws_mutex_lock(&test_data.mutex));
struct aws_thread thread;
ASSERT_SUCCESS(aws_thread_init(&thread, allocator));
ASSERT_SUCCESS(aws_thread_launch(&thread, s_conditional_thread_2_fn, &test_data, NULL));
test_data.thread_1 = 1;
ASSERT_SUCCESS(aws_condition_variable_notify_one(&test_data.condition_variable_1));
while (!test_data.thread_2) {
ASSERT_SUCCESS(aws_condition_variable_wait_pred(
&test_data.condition_variable_2, &test_data.mutex, s_conditional_predicate, &predicate_args));
}
ASSERT_SUCCESS(aws_mutex_unlock(&test_data.mutex));
aws_thread_join(&thread);
aws_thread_clean_up(&thread);
ASSERT_TRUE(predicate_args.call_count >= 2);
return AWS_OP_SUCCESS;
}
AWS_TEST_CASE(conditional_notify_one, s_test_conditional_notify_one_fn)
static int s_test_conditional_notify_all_fn(struct aws_allocator *allocator, void *ctx) {
(void)ctx;
struct condition_predicate_args predicate_args = {.call_count = 0};
struct conditional_test_data test_data = {.condition_variable_1 = AWS_CONDITION_VARIABLE_INIT,
.condition_variable_2 = AWS_CONDITION_VARIABLE_INIT,
.mutex = AWS_MUTEX_INIT,
.predicate_args = &predicate_args,
.thread_1 = 0,
.thread_2 = 0,
.thread_3 = 0};
ASSERT_SUCCESS(aws_mutex_lock(&test_data.mutex));
struct aws_thread thread_2;
ASSERT_SUCCESS(aws_thread_init(&thread_2, allocator));
ASSERT_SUCCESS(aws_thread_launch(&thread_2, s_conditional_thread_2_fn, &test_data, NULL));
struct aws_thread thread_3;
ASSERT_SUCCESS(aws_thread_init(&thread_3, allocator));
ASSERT_SUCCESS(aws_thread_launch(&thread_3, s_conditional_thread_3_fn, &test_data, NULL));
test_data.thread_1 = 1;
ASSERT_SUCCESS(aws_condition_variable_notify_all(&test_data.condition_variable_1));
while (!test_data.thread_2 && !test_data.thread_3) {
ASSERT_SUCCESS(aws_condition_variable_wait_pred(
&test_data.condition_variable_2, &test_data.mutex, s_conditional_predicate, &predicate_args));
}
ASSERT_SUCCESS(aws_mutex_unlock(&test_data.mutex));
aws_thread_join(&thread_2);
aws_thread_join(&thread_3);
aws_thread_clean_up(&thread_2);
aws_thread_clean_up(&thread_3);
ASSERT_TRUE(predicate_args.call_count >= 2);
return AWS_OP_SUCCESS;
}
AWS_TEST_CASE(conditional_notify_all, s_test_conditional_notify_all_fn)
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