4 * Copyright 2003, 2004, 2005 Develer S.r.l. (http://www.develer.com/)
5 * This file is part of DevLib - See README.devlib for information.
8 * \brief Simple debug facilities for hosted and embedded C/C++ applications.
10 * Debug output goes to stderr in hosted applications.
11 * Freestanding (AKA embedded) applications use \c drv/kdebug.c to output
12 * diagnostic messages to a serial terminal or a JTAG debugger.
15 * \author Bernardo Innocenti <bernie@develer.com>
20 *#* Revision 1.9 2006/02/23 08:40:33 bernie
21 *#* TRACEMSG() support for compilers with no variadic macros.
23 *#* Revision 1.8 2006/02/23 08:33:04 bernie
24 *#* Fix for compilers without variadic macros support.
26 *#* Revision 1.7 2006/02/20 02:01:56 bernie
27 *#* Depend on cfg/os.h.
29 *#* Revision 1.6 2006/02/17 22:28:37 bernie
30 *#* Support TRACE() and TRACEMSG() on hosted targets.
32 *#* Revision 1.5 2005/11/04 16:09:03 bernie
33 *#* Doxygen workaround.
35 *#* Revision 1.4 2005/07/03 15:18:52 bernie
38 *#* Revision 1.3 2005/06/27 21:23:55 bernie
39 *#* Rename cfg/config.h to appconfig.h.
41 *#* Revision 1.2 2005/04/11 19:10:27 bernie
42 *#* Include top-level headers from cfg/ subdir.
44 *#* Revision 1.1 2005/04/11 19:04:13 bernie
45 *#* Move top-level headers to cfg/ subdir.
47 *#* Revision 1.13 2005/03/01 23:23:58 bernie
48 *#* Provide defaults for CONFIG_KDEBUG_DISABLE_TRACE and CONFIG_KDEBUG_ASSERT_NO_TEXT.
50 *#* Revision 1.12 2005/02/18 11:18:33 bernie
51 *#* Fixes for Harvard processors from project_ks.
53 *#* Revision 1.11 2005/02/16 20:29:48 bernie
54 *#* TRACE(), TRACEMSG(): Reduce code and data footprint.
56 *#* Revision 1.10 2005/02/09 21:50:28 bernie
57 *#* Declare dummy ASSERT* macros as ((void)0) to work around a warning I can't remember any more.
59 *#* Revision 1.9 2005/01/25 08:36:40 bernie
60 *#* kputnum(): Export.
62 *#* Revision 1.8 2005/01/11 18:08:08 aleph
63 *#* Add empty kdump definition for debug off
65 *#* Revision 1.7 2004/12/31 17:43:09 bernie
66 *#* Use UNUSED_ARG instead of obsolete UNUSED macro.
68 *#* Revision 1.6 2004/12/08 08:52:00 bernie
69 *#* Save some more RAM on AVR.
71 #ifndef DEVLIB_DEBUG_H
72 #define DEVLIB_DEBUG_H
78 * For now, avoid dependency on compiler.h
81 #define FORMAT(x,y,z) /* nothing */
84 #define INLINE static inline
88 #define UNUSED_ARG(type,name) type
90 #define UNUSED_ARG(type,name) type name
93 #else /* !OS_HOSTED */
94 #include <cfg/compiler.h>
95 #endif /* !OS_HOSTED */
99 * Defaults for rarely used config stuff.
101 #ifndef CONFIG_KDEBUG_DISABLE_TRACE
102 #define CONFIG_KDEBUG_DISABLE_TRACE 0
105 #ifndef CONFIG_KDEBUG_ASSERT_NO_TEXT
106 #define CONFIG_KDEBUG_ASSERT_NO_TEXT 0
113 * This preprocessor symbol is defined only in debug builds.
115 * The build infrastructure must arrange for _DEBUG to
116 * be predefined for all source files being compiled.
118 * This is compatible with the Microsoft convention for
119 * the default Debug and Release targets.
123 // STLport specific: enable extra checks
124 #define __STL_DEBUG 1
126 // MSVC specific: Enable memory allocation debug
127 #if defined(_MSC_VER)
132 * On UNIX systems the extabilished practice is to define
133 * NDEBUG for release builds and nothing for debug builds.
140 * This macro duplicates the old MSVC trick of redefining
141 * THIS_FILE locally to avoid the overhead of many duplicate
142 * strings in ASSERT().
145 #define THIS_FILE __FILE__
149 * This macro can be used to conditionally exclude one or more
150 * statements conditioned on \c _DEBUG, avoiding the clutter
151 * of ifdef/endif pairs.
158 * DB(int ref_count;) // Track number of users
173 INLINE void kdbg_init(void) { /* nop */ }
174 INLINE void kputchar(char c)
178 INLINE void kputs(const char *str)
182 /* G++ can't inline functions with variable arguments... */
183 #define kprintf(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
184 #define kvprintf(fmt, ap) vfprintf(stderr, fmt, ap)
185 void kdump(const void *buf, size_t len); /* UNIMPLEMENTED */
189 #define ASSERT(x) assert(x)
191 #define ASSERT2(x, help) ASSERT(help && x)
194 * Check that the given pointer is either NULL or pointing to valid memory.
196 * The assumption here is that valid pointers never point to low
197 * memory regions. This helps catching pointers taken from
198 * struct/class memebers when the struct pointer was NULL.
200 #define ASSERT_VALID_PTR(p) ASSERT((unsigned long)(p) > 0x200)
203 * Check that the given pointer is not pointing to invalid memory.
205 * \see ASSERT_VALID_PTR()
207 #define ASSERT_VALID_PTR_OR_NULL(p) ASSERT((((p) == NULL) || ((unsigned long)(p) >= 0x200)))
209 #if !CONFIG_KDEBUG_DISABLE_TRACE
210 #define TRACE kprintf("%s()\n", __func__)
211 #if COMPILER_VARIADIC_MACROS
212 #define TRACEMSG(msg,...) kprintf("%s(): " msg, __func__, ## __VA_ARGS__)
214 INLINE void TRACEMSG(const char *fmt, ...)
218 kprintf("%s(): ", __func__);
224 #define TRACE do {} while(0)
225 #define TRACEMSG(...) do {} while(0)
228 #else /* !OS_HOSTED */
230 #include <appconfig.h> /* CONFIG_KDEBUG_ASSERT_NO_TEXT */
231 #include <cfg/cpu.h> /* CPU_HARVARD */
233 /* These are implemented in drv/kdebug.c */
234 void kdbg_init(void);
235 void kputchar(char c);
236 int kputnum(int num);
237 void kdump(const void *buf, size_t len);
238 void __init_wall(long *wall, int size);
241 #include <mware/pgm.h>
242 void kputs_P(const char *PROGMEM str);
243 void kprintf_P(const char *PROGMEM fmt, ...) FORMAT(__printf__, 1, 2);
244 int __assert_P(const char *PROGMEM cond, const char *PROGMEM file, int line);
245 void __trace_P(const char *func);
246 void __tracemsg_P(const char *func, const char *PROGMEM fmt, ...);
247 int __invalid_ptr_P(void *p, const char *PROGMEM name, const char *PROGMEM file, int line);
248 int __check_wall_P(long *wall, int size, const char * PGM_ATTR name, const char * PGM_ATTR file, int line);
249 #define kputs(str) kputs_P(PSTR(str))
250 #define kprintf(fmt, ...) kprintf_P(PSTR(fmt) ,## __VA_ARGS__)
251 #define __assert(cond, file, line) __assert_P(PSTR(cond), PSTR(file), (line))
252 #define __trace(func) __trace_P(func)
253 #define __tracemsg(func, fmt, ...) __tracemsg_P(func, PSTR(fmt), ## __VA_ARGS__)
254 #define __invalid_ptr(p, name, file, line) __invalid_ptr_P((p), PSTR(name), PSTR(file), (line))
255 #define __check_wall(wall, size, name, file, line) __check_wall_P(wall, size, PSTR(name), PSTR(file), (line))
256 #else /* !CPU_HARVARD */
257 void kputs(const char *str);
258 void kprintf(const char *fmt, ...) FORMAT(__printf__, 1, 2);
259 int __assert(const char *cond, const char *file, int line);
260 void __trace(const char *func);
261 void __tracemsg(const char *func, const char *fmt, ...) FORMAT(__printf__, 2, 3);
262 int __invalid_ptr(void *p, const char *name, const char *file, int line);
263 int __check_wall(long *wall, int size, const char *name, const char *file, int line);
264 #endif /* !CPU_HARVARD */
266 #if !CONFIG_KDEBUG_ASSERT_NO_TEXT
267 #define ASSERT(x) ((void)(LIKELY(x) ? 0 : __assert(#x, THIS_FILE, __LINE__)))
268 #define ASSERT2(x, help) ((void)(LIKELY(x) ? 0 : __assert(help " (" #x ")", THIS_FILE, __LINE__)))
270 #define ASSERT(x) ((void)(LIKELY(x) ? 0 : __assert("", THIS_FILE, __LINE__)))
271 #define ASSERT2(x, help) ((void)ASSERT(x))
274 #define ASSERT_VALID_PTR(p) ((void)(LIKELY((p) >= 0x200) ? 0 : __invalid_ptr(p, #p, THIS_FILE, __LINE__)))
275 #define ASSERT_VALID_PTR_OR_NULL(p) ((void)(LIKELY((p == NULL) || ((p) >= 0x200)) ? 0 : __invalid_ptr((p), #p, THIS_FILE, __LINE__)))
277 #if !CONFIG_KDEBUG_DISABLE_TRACE
278 #define TRACE __trace(__func__)
279 #define TRACEMSG(msg,...) __tracemsg(__func__, msg, ## __VA_ARGS__)
281 #define TRACE do {} while(0)
282 #define TRACEMSG(...) do {} while(0)
285 #endif /* !OS_HOSTED */
288 * \name Walls to detect data corruption
292 #define WALL_VALUE (long)0xABADCAFEL
293 #define DECLARE_WALL(name,size) long name[(size) / sizeof(long)];
294 #define FWD_DECLARE_WALL(name,size) extern long name[(size) / sizeof(long)];
295 #define INIT_WALL(name) __init_wall((name), countof(name))
296 #define CHECK_WALL(name) __check_wall((name), countof(name), #name, THIS_FILE, __LINE__)
300 * Check that the given pointer actually points to an object
301 * of the specified type.
303 #define ASSERT_VALID_OBJ(_t, _o) do { \
304 ASSERT_VALID_PTR((_o)); \
305 ASSERT(dynamic_cast<_t>((_o)) != NULL); \
309 * \name Debug object creation and destruction.
311 * These macros help track some kinds of leaks in C++ programs.
312 * Usage is as follows:
317 * DECLARE_INSTANCE_TRACKING(Foo)
327 * DELETE_INSTANCE(Foo);
332 * // Put this in the implementation file of the class
333 * IMPLEMENT_INSTANCE_TRACKING(Foo)
338 * Foo *foo = new Foo;
339 * cout << GET_INSTANCE_COUNT(Foo) << endl; // prints "1"
341 * ASSERT_ZERO_INSTANCES(Foo); // OK
346 #define NEW_INSTANCE(CLASS) do { ++CLASS::__instances } while (0)
347 #define DELETE_INSTANCE(CLASS) do { --CLASS::__instances } while (0)
348 #define ASSERT_ZERO_INSTANCES(CLASS) ASSERT(CLASS::__instances == 0)
349 #define GET_INSTANCE_COUNT(CLASS) (CLASS::__instances)
350 #define DECLARE_INSTANCE_TRACKING(CLASS) static int __instances
351 #define IMPLEMENT_INSTANCE_TRACKING(CLASS) int CLASS::__instances = 0
357 * On UNIX systems the extabilished practice is to define
358 * NDEBUG for release builds and nothing for debug builds.
364 #define DB(x) /* nothing */
366 #define ASSERT(x) ((void)0)
368 #define ASSERT2(x, help) ((void)0)
369 #define ASSERT_VALID_PTR(p) ((void)0)
370 #define ASSERT_VALID_PTR_OR_NULL(p) ((void)0)
371 #define ASSERT_VALID_OBJ(_t, _o) ((void)0)
372 #define TRACE do {} while (0)
373 #if COMPILER_VARIADIC_MACROS
374 #define TRACEMSG(x, ...) do {} while (0)
376 INLINE void TRACEMSG(UNUSED_ARG(const char *, msg), ...)
382 #define DECLARE_WALL(name, size) /* nothing */
383 #define FWD_DECLARE_WALL(name, size) /* nothing */
384 #define INIT_WALL(name) do {} while (0)
385 #define CHECK_WALL(name) do {} while (0)
387 #define NEW_INSTANCE(CLASS) do {} while (0)
388 #define DELETE_INSTANCE(CLASS) do {} while (0)
389 #define ASSERT_ZERO_INSTANCES(CLASS) do {} while (0)
390 #define GET_INSTANCE_COUNT(CLASS) ERROR_ONLY_FOR_DEBUG
391 #define DECLARE_INSTANCE_TRACKING(CLASS)
392 #define IMPLEMENT_INSTANCE_TRACKING(CLASS)
394 INLINE void kdbg_init(void) { /* nop */ }
395 INLINE void kputchar(UNUSED_ARG(char, c)) { /* nop */ }
396 INLINE int kputnum(UNUSED_ARG(int, num)) { return 0; }
397 INLINE void kputs(UNUSED_ARG(const char *, str)) { /* nop */ }
398 INLINE void kdump(UNUSED_ARG(const void *, buf), UNUSED_ARG(size_t, len)) { /* nop */ }
400 #if defined(__cplusplus) && COMPILER_VARIADIC_MACROS
401 /* G++ can't inline functions with variable arguments... */
402 #define kprintf(fmt,...) do { (void)(fmt); } while(0)
404 /* ...but GCC can. */
405 INLINE void kprintf(UNUSED_ARG(const char *, fmt), ...) { /* nop */ }
410 #endif /* DEVLIB_DEBUG_H */