add heap and semaphore examples.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@501 bbd45198-f89e-11dd-88c7-29a3b14d5316

examples/kernel/semaphore_buffer_worker.c

@@ -0,0 +1,121 @@
+#include <rtthread.h>
+#include "tc_comm.h"
+
+static rt_sem_t sem;
+static rt_thread_t t1, worker;
+
+#define BUFFER_SIZE		256
+#define DATA_ITEM_SIZE	32
+
+static rt_uint8_t working_buffer[BUFFER_SIZE];
+static rt_uint16_t write_index, read_index;
+
+static void thread1_entry(void* parameter)
+{
+	rt_err_t result;
+	rt_uint16_t next_index;
+	rt_uint8_t data[DATA_ITEM_SIZE];
+
+	while (1)
+	{
+		/* take a semaphore */
+		result = rt_sem_take(sem, RT_WAITING_FOREVER);
+		if (result != RT_EOK)
+		{
+			tc_done(TC_STAT_FAILED);
+			return;
+		}
+
+		/* read buffer */
+
+		/* release semaphore */
+		rt_sem_release(sem);
+	}
+}
+
+static void worker_thread_entry(void* parameter)
+{
+	rt_err_t result;
+	rt_uint16_t next_index;
+	rt_uint8_t data[DATA_ITEM_SIZE];
+
+	while (1)
+	{
+		/* take a semaphore */
+		result = rt_sem_take(sem, RT_WAITING_FOREVER);
+		if (result != RT_EOK)
+		{
+			tc_done(TC_STAT_FAILED);
+			return;
+		}
+
+		/* write buffer */
+
+		/* release semaphore */
+		rt_sem_release(sem);
+	}
+}
+
+int semaphore_buffer_worker_init()
+{
+	sem = rt_sem_create("sem", 0, RT_IPC_FLAG_FIFO);
+	if (sem == RT_NULL)
+	{
+		tc_stat(TC_STAT_END | TC_STAT_FAILED);
+		return 0;
+	}
+
+	write_index = read_index = 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);
+
+	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(worker);
+
+	tc_stat(TC_STAT_PASSED);
+
+	/* unlock scheduler */
+	rt_exit_critical();
+}
+
+int _tc_semaphore_buffer_worker()
+{
+	/* set tc cleanup */
+	tc_cleanup(_tc_cleanup);
+	semaphore_buffer_worker_init();
+
+	return 50;
+}
+FINSH_FUNCTION_EXPORT(_tc_semaphore_buffer_worker, two threads working on a buffer example);
+#else
+int rt_application_init()
+{
+	semaphore_buffer_worker_init();
+
+	return 0;
+}
+#endif