From 2d54fcc40581c348959e50a853ef7d4c0478974f Mon Sep 17 00:00:00 2001
From: "bernard.xiong" <bernard.xiong@gmail.com>
Date: Wed, 17 Mar 2010 09:57:07 +0000
Subject: add heap and semaphore examples.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@501 bbd45198-f89e-11dd-88c7-29a3b14d5316
---
 examples/kernel/semaphore_priority.c | 128 +++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 examples/kernel/semaphore_priority.c

(limited to 'examples/kernel/semaphore_priority.c')

diff --git a/examples/kernel/semaphore_priority.c b/examples/kernel/semaphore_priority.c
new file mode 100644
index 0000000000..766c25c514
--- /dev/null
+++ b/examples/kernel/semaphore_priority.c
@@ -0,0 +1,128 @@
+#include <rtthread.h>
+#include "tc_comm.h"
+
+static rt_sem_t sem;
+static rt_uint8_t t1_count, t2_count;
+static rt_thread_t t1, t2, worker;
+static void thread1_entry(void* parameter)
+{
+	rt_err_t result;
+
+	while (1)
+	{
+		result = rt_sem_take(sem, RT_WAITING_FOREVER);
+		if (result != RT_EOK)
+		{
+			tc_done(TC_STAT_FAILED);
+			return;
+		}
+
+		t1_count ++;
+		rt_kprintf("thread1: got semaphore, count: %d\n", t1_count);
+	}
+}
+
+static void thread2_entry(void* parameter)
+{
+	rt_err_t result;
+
+	while (1)
+	{
+		result = rt_sem_take(sem, RT_WAITING_FOREVER);
+		if (result != RT_EOK)
+		{
+			tc_done(TC_STAT_FAILED);
+			return;
+		}
+
+		t2_count ++;
+		rt_kprintf("thread2: got semaphore, count: %d\n", t2_count);
+	}
+}
+
+static void worker_thread_entry(void* parameter)
+{
+	rt_thread_delay(10);
+
+	while (1)
+	{
+		rt_sem_release(sem);
+		rt_thread_delay(5);
+	}
+}
+
+int semaphore_priority_init()
+{
+	sem = rt_sem_create("sem", 0, RT_IPC_FLAG_PRIO);
+	if (sem == RT_NULL)
+	{
+		tc_stat(TC_STAT_END | TC_STAT_FAILED);
+		return 0;
+	}
+
+	t1_count = t2_count = 0;
+
+	t1 = rt_thread_create("t1",
+		thread1_entry, RT_NULL,
+		THREAD_STACK_SIZE, THREAD_PRIORITY + 1, THREAD_TIMESLICE);
+	if (t1 != RT_NULL)
+		rt_thread_startup(t1);
+	else
+		tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+	t2 = rt_thread_create("t2",
+		thread2_entry, RT_NULL,
+		THREAD_STACK_SIZE, THREAD_PRIORITY - 1, THREAD_TIMESLICE);
+	if (t2 != RT_NULL)
+		rt_thread_startup(t2);
+	else
+		tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+	worker = rt_thread_create("worker",
+		worker_thread_entry, RT_NULL,
+		THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+	if (worker != RT_NULL)
+		rt_thread_startup(worker);
+	else
+		tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+	return 0;
+}
+
+#ifdef RT_USING_TC
+static void _tc_cleanup()
+{
+	/* lock scheduler */
+	rt_enter_critical();
+
+	/* delete t1, t2 and worker thread */
+	rt_thread_delete(t1);
+	rt_thread_delete(t2);
+	rt_thread_delete(worker);
+
+	if (t1_count > t2_count)
+		tc_stat(TC_STAT_FAILED);
+	else
+		tc_stat(TC_STAT_PASSED);
+
+	/* unlock scheduler */
+	rt_exit_critical();
+}
+
+int _tc_semaphore_priority()
+{
+	/* set tc cleanup */
+	tc_cleanup(_tc_cleanup);
+	semaphore_priority_init();
+
+	return 50;
+}
+FINSH_FUNCTION_EXPORT(_tc_semaphore_priority, a priority semaphore test);
+#else
+int rt_application_init()
+{
+	semaphore_priority_init();
+
+	return 0;
+}
+#endif
-- 
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