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/*
* Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <pthread.h>
#include <sched.h>
#include <unistd.h>
#define TEST_CASE_IN_PTHREAD(x) \
static void* __TESTCASE_FUNC(x##__inner)(void*); \
TEST_CASE(x) \
{ \
pthread_t thread; \
pthread_create(&thread, nullptr, __TESTCASE_FUNC(x##__inner), nullptr); \
pthread_join(thread, nullptr); \
} \
static void* __TESTCASE_FUNC(x##__inner)(void*)
TEST_CASE_IN_PTHREAD(basic_priority)
{
auto min_priority = sched_get_priority_min(0);
auto max_priority = sched_get_priority_max(0);
sched_param const min_priority_parameter { .sched_priority = min_priority };
sched_param const max_priority_parameter { .sched_priority = max_priority };
auto rc = pthread_setschedparam(0, 0, &min_priority_parameter);
EXPECT_EQ(rc, 0);
sched_param output_parameter;
rc = pthread_getschedparam(0, 0, &output_parameter);
EXPECT_EQ(rc, 0);
EXPECT_EQ(output_parameter.sched_priority, min_priority);
rc = pthread_setschedparam(0, 0, &max_priority_parameter);
EXPECT_EQ(rc, 0);
rc = pthread_getschedparam(0, 0, &output_parameter);
EXPECT_EQ(rc, 0);
EXPECT_EQ(output_parameter.sched_priority, max_priority);
rc = pthread_setschedparam(0, 0, &max_priority_parameter);
EXPECT_EQ(rc, 0);
return 0;
}
TEST_CASE_IN_PTHREAD(invalid_arguments)
{
auto min_priority = sched_get_priority_min(0);
auto max_priority = sched_get_priority_max(0);
sched_param const under_priority_parameter { .sched_priority = min_priority - 1 };
sched_param const over_priority_parameter { .sched_priority = max_priority + 1 };
sched_param const min_priority_parameter { .sched_priority = min_priority };
// Set too high or too low priorities.
auto rc = pthread_setschedparam(0, 0, &over_priority_parameter);
EXPECT_EQ(rc, EINVAL);
rc = pthread_setschedparam(0, 0, &under_priority_parameter);
EXPECT_EQ(rc, EINVAL);
// Get and set a thread that doesn't exist.
rc = pthread_setschedparam(-42069, 0, &min_priority_parameter);
EXPECT_EQ(rc, ESRCH);
sched_param output_parameter;
rc = pthread_getschedparam(-42069, 0, &output_parameter);
EXPECT_EQ(rc, ESRCH);
return 0;
}
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