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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Copyright (C) 2026 Richard Qin */
#include <lume/selftest.h>
#include <lume/waitqueue.h>
#include <lume/task.h>
#include <lume/sched.h>
static WaitQueue g_test_wq;
static volatile bool g_thread_woken = false;
static volatile bool g_thread_started = false;
static volatile int g_wake_count = 0;
extern TaskControlBlock* kthread_create(const char* name, void (*entry)(void*), void* arg, uint8 priority);
static void waitqueue_test_thread(void*)
{
g_thread_started = true;
g_test_wq.sleep();
g_thread_woken = true;
extern void task_exit(int code);
task_exit(0);
}
static void waitqueue_test_thread_all(void*)
{
g_test_wq.sleep();
__sync_fetch_and_add(&g_wake_count, 1);
extern void task_exit(int code);
task_exit(0);
}
void selftest_waitqueue()
{
st_begin("waitqueue: sleep and wake_one");
g_test_wq.init("test_wq");
g_thread_started = false;
g_thread_woken = false;
TaskControlBlock* child = kthread_create("test_wq_child", waitqueue_test_thread, nullptr, 0);
ST_ASSERT(child != nullptr);
sched_yield();
ST_ASSERT(g_thread_started == true);
ST_ASSERT(g_thread_woken == false);
ST_ASSERT(!g_test_wq.is_empty());
kprintf("[test_wq] waking child\n");
bool woken = g_test_wq.wake_one();
ST_ASSERT(woken == true);
ST_ASSERT(g_test_wq.is_empty());
kprintf("[test_wq] yielding to child again\n");
sched_yield();
kprintf("[test_wq] returned from yield 2\n");
ST_ASSERT(g_thread_woken == true);
st_pass();
st_begin("waitqueue: wake_all");
g_wake_count = 0;
for (int i = 0; i < 3; i++) {
kthread_create("test_wq_all", waitqueue_test_thread_all, nullptr, 0);
}
/* Give all 3 threads a chance to start and sleep */
kprintf("[test_wq] yielding 1 for wake_all\n");
sched_yield();
sched_yield();
sched_yield();
ST_ASSERT(!g_test_wq.is_empty());
int woken_count = g_test_wq.wake_all();
ST_ASSERT_EQ(woken_count, 3);
ST_ASSERT(g_test_wq.is_empty());
/* Give all 3 threads a chance to wake up and run */
sched_yield();
sched_yield();
sched_yield();
ST_ASSERT_EQ(g_wake_count, 3);
st_pass();
}
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