Add reentrance check. Put kernel debug switch together.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1494 bbd45198-f89e-11dd-88c7-29a3b14d5316

include/rtdebug.h

@@ -0,0 +1,66 @@
+#ifndef __RTDEBUG_H__
+#define __RTDEBUG_H__
+
+#include <rtconfig.h>
+
+/* Using this macro to control all kernel debug features. */
+#ifdef RT_DEBUG
+
+/* Turn on some of these (set to non-zero) to debug kernel */
+#define RT_DEBUG_MEM        0
+#define RT_DEBUG_MODULE     0
+#define RT_DEBUG_SCHEDULER  0
+#define RT_DEBUG_SLAB       0
+#define RT_DEBUG_THREAD     0
+#define RT_DEBUG_TIMER      0
+#define RT_DEBUG_IRQ        0
+#define RT_DEBUG_IPC        0
+
+/* Turn on this to enable reentrance check */
+#define RT_DEBUG_REENT_CHK  1
+
+#define RT_DEBUG_LOG(type,message)  do{ if(type) rt_kprintf message;}while(0)
+
+#define RT_ASSERT(EX)   if (!(EX)) {volatile char dummy=0;\
+                            rt_kprintf("(%s) assert failed at %s:%d \n", \
+                            #EX, __FUNCTION__, __LINE__); while (dummy==0);}
+
+/* Reentrance check */
+/* counter */
+extern rt_uint8_t rt_debug_reent_cnt;
+
+#define RT_DEBUG_REENT_IN if(RT_DEBUG_REENT_CHK){\
+        rt_base_t level;\
+        level = rt_hw_interrupt_disable();\
+        rt_debug_reent_cnt++;\
+        rt_hw_interrupt_enable(level);}
+
+#define RT_DEBUG_REENT_OUT if(RT_DEBUG_REENT_CHK){\
+        rt_base_t level;\
+        level = rt_hw_interrupt_disable();\
+        rt_debug_reent_cnt--;\
+        rt_hw_interrupt_enable(level);}
+
+/* Mark those non-reentrant functions with this macro */
+#define RT_DEBUG_NOT_REENT if(RT_DEBUG_REENT_CHK){\
+        rt_base_t level;\
+        level = rt_hw_interrupt_disable();\
+        if(rt_debug_reent_cnt != 0){\
+            rt_kprintf("Non-reentrant function used in critical area!\n");\
+            RT_ASSERT(0)}\
+        rt_hw_interrupt_enable(level);}
+
+
+#else /* RT_DEBUG */
+
+#define RT_ASSERT(EX)
+#define RT_DEGUB_LOG(type,message)
+#define RT_DEBUG_REENT_IN
+#define RT_DEBUG_REENT_OUT
+#define RT_DEBUG_NOT_REENT
+
+#endif /* RT_DEBUG */
+
+
+
+#endif /* __RTDEBUG_H__ */