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 1.10 2006/02/23 09:10:10 bernie
21 *#* Add even more code duplication until we properly refactor debug.h.
23 *#* Revision 1.9 2006/02/23 08:40:33 bernie
24 *#* TRACEMSG() support for compilers with no variadic macros.
26 *#* Revision 1.8 2006/02/23 08:33:04 bernie
27 *#* Fix for compilers without variadic macros support.
29 *#* Revision 1.7 2006/02/20 02:01:56 bernie
30 *#* Depend on cfg/os.h.
32 *#* Revision 1.6 2006/02/17 22:28:37 bernie
33 *#* Support TRACE() and TRACEMSG() on hosted targets.
35 *#* Revision 1.5 2005/11/04 16:09:03 bernie
36 *#* Doxygen workaround.
38 *#* Revision 1.4 2005/07/03 15:18:52 bernie
41 *#* Revision 1.3 2005/06/27 21:23:55 bernie
42 *#* Rename cfg/config.h to appconfig.h.
44 *#* Revision 1.2 2005/04/11 19:10:27 bernie
45 *#* Include top-level headers from cfg/ subdir.
47 *#* Revision 1.1 2005/04/11 19:04:13 bernie
48 *#* Move top-level headers to cfg/ subdir.
50 *#* Revision 1.13 2005/03/01 23:23:58 bernie
51 *#* Provide defaults for CONFIG_KDEBUG_DISABLE_TRACE and CONFIG_KDEBUG_ASSERT_NO_TEXT.
53 *#* Revision 1.12 2005/02/18 11:18:33 bernie
54 *#* Fixes for Harvard processors from project_ks.
56 *#* Revision 1.11 2005/02/16 20:29:48 bernie
57 *#* TRACE(), TRACEMSG(): Reduce code and data footprint.
59 *#* Revision 1.10 2005/02/09 21:50:28 bernie
60 *#* Declare dummy ASSERT* macros as ((void)0) to work around a warning I can't remember any more.
62 *#* Revision 1.9 2005/01/25 08:36:40 bernie
63 *#* kputnum(): Export.
65 *#* Revision 1.8 2005/01/11 18:08:08 aleph
66 *#* Add empty kdump definition for debug off
68 *#* Revision 1.7 2004/12/31 17:43:09 bernie
69 *#* Use UNUSED_ARG instead of obsolete UNUSED macro.
71 *#* Revision 1.6 2004/12/08 08:52:00 bernie
72 *#* Save some more RAM on AVR.
74 #ifndef DEVLIB_DEBUG_H
75 #define DEVLIB_DEBUG_H
81 * For now, avoid dependency on compiler.h
84 #define FORMAT(x,y,z) /* nothing */
87 #define INLINE static inline
91 #define UNUSED_ARG(type,name) type
93 #define UNUSED_ARG(type,name) type name
96 #else /* !OS_HOSTED */
97 #include <cfg/compiler.h>
98 #endif /* !OS_HOSTED */
102 * Defaults for rarely used config stuff.
104 #ifndef CONFIG_KDEBUG_DISABLE_TRACE
105 #define CONFIG_KDEBUG_DISABLE_TRACE 0
108 #ifndef CONFIG_KDEBUG_ASSERT_NO_TEXT
109 #define CONFIG_KDEBUG_ASSERT_NO_TEXT 0
116 * This preprocessor symbol is defined only in debug builds.
118 * The build infrastructure must arrange for _DEBUG to
119 * be predefined for all source files being compiled.
121 * This is compatible with the Microsoft convention for
122 * the default Debug and Release targets.
126 // STLport specific: enable extra checks
127 #define __STL_DEBUG 1
129 // MSVC specific: Enable memory allocation debug
130 #if defined(_MSC_VER)
135 * On UNIX systems the extabilished practice is to define
136 * NDEBUG for release builds and nothing for debug builds.
143 * This macro duplicates the old MSVC trick of redefining
144 * THIS_FILE locally to avoid the overhead of many duplicate
145 * strings in ASSERT().
148 #define THIS_FILE __FILE__
152 * This macro can be used to conditionally exclude one or more
153 * statements conditioned on \c _DEBUG, avoiding the clutter
154 * of ifdef/endif pairs.
161 * DB(int ref_count;) // Track number of users
176 INLINE void kdbg_init(void) { /* nop */ }
177 INLINE void kputchar(char c)
181 INLINE void kputs(const char *str)
185 #if COMPILER_VARIADIC_MACROS
186 /* G++ can't inline functions with variable arguments... */
187 #define kprintf(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
189 INLINE int kprintf(const char *fmt, ...)
195 result = kvprintf(fmt, ap);
201 #define kvprintf(fmt, ap) vfprintf(stderr, fmt, ap)
202 void kdump(const void *buf, size_t len); /* UNIMPLEMENTED */
206 #define ASSERT(x) assert(x)
208 #define ASSERT2(x, help) ASSERT(help && x)
211 * Check that the given pointer is either NULL or pointing to valid memory.
213 * The assumption here is that valid pointers never point to low
214 * memory regions. This helps catching pointers taken from
215 * struct/class memebers when the struct pointer was NULL.
217 #define ASSERT_VALID_PTR(p) ASSERT((unsigned long)(p) > 0x200)
220 * Check that the given pointer is not pointing to invalid memory.
222 * \see ASSERT_VALID_PTR()
224 #define ASSERT_VALID_PTR_OR_NULL(p) ASSERT((((p) == NULL) || ((unsigned long)(p) >= 0x200)))
226 #if !CONFIG_KDEBUG_DISABLE_TRACE
227 #define TRACE kprintf("%s()\n", __func__)
228 #if COMPILER_VARIADIC_MACROS
229 #define TRACEMSG(msg,...) kprintf("%s(): " msg, __func__, ## __VA_ARGS__)
231 INLINE void TRACEMSG(const char *fmt, ...)
235 kprintf("%s(): ", __func__);
241 #define TRACE do {} while(0)
242 #define TRACEMSG(...) do {} while(0)
245 #else /* !OS_HOSTED */
247 #include <appconfig.h> /* CONFIG_KDEBUG_ASSERT_NO_TEXT */
248 #include <cfg/cpu.h> /* CPU_HARVARD */
250 /* These are implemented in drv/kdebug.c */
251 void kdbg_init(void);
252 void kputchar(char c);
253 int kputnum(int num);
254 void kdump(const void *buf, size_t len);
255 void __init_wall(long *wall, int size);
258 #include <mware/pgm.h>
259 void kputs_P(const char *PROGMEM str);
260 void kprintf_P(const char *PROGMEM fmt, ...) FORMAT(__printf__, 1, 2);
261 int __assert_P(const char *PROGMEM cond, const char *PROGMEM file, int line);
262 void __trace_P(const char *func);
263 void __tracemsg_P(const char *func, const char *PROGMEM fmt, ...);
264 int __invalid_ptr_P(void *p, const char *PROGMEM name, const char *PROGMEM file, int line);
265 int __check_wall_P(long *wall, int size, const char * PGM_ATTR name, const char * PGM_ATTR file, int line);
266 #define kputs(str) kputs_P(PSTR(str))
267 #define kprintf(fmt, ...) kprintf_P(PSTR(fmt) ,## __VA_ARGS__)
268 #define __assert(cond, file, line) __assert_P(PSTR(cond), PSTR(file), (line))
269 #define __trace(func) __trace_P(func)
270 #define __tracemsg(func, fmt, ...) __tracemsg_P(func, PSTR(fmt), ## __VA_ARGS__)
271 #define __invalid_ptr(p, name, file, line) __invalid_ptr_P((p), PSTR(name), PSTR(file), (line))
272 #define __check_wall(wall, size, name, file, line) __check_wall_P(wall, size, PSTR(name), PSTR(file), (line))
273 #else /* !CPU_HARVARD */
274 void kputs(const char *str);
275 void kprintf(const char *fmt, ...) FORMAT(__printf__, 1, 2);
276 int __assert(const char *cond, const char *file, int line);
277 void __trace(const char *func);
278 void __tracemsg(const char *func, const char *fmt, ...) FORMAT(__printf__, 2, 3);
279 int __invalid_ptr(void *p, const char *name, const char *file, int line);
280 int __check_wall(long *wall, int size, const char *name, const char *file, int line);
281 #endif /* !CPU_HARVARD */
283 #if !CONFIG_KDEBUG_ASSERT_NO_TEXT
284 #define ASSERT(x) ((void)(LIKELY(x) ? 0 : __assert(#x, THIS_FILE, __LINE__)))
285 #define ASSERT2(x, help) ((void)(LIKELY(x) ? 0 : __assert(help " (" #x ")", THIS_FILE, __LINE__)))
287 #define ASSERT(x) ((void)(LIKELY(x) ? 0 : __assert("", THIS_FILE, __LINE__)))
288 #define ASSERT2(x, help) ((void)ASSERT(x))
291 #define ASSERT_VALID_PTR(p) ((void)(LIKELY((p) >= 0x200) ? 0 : __invalid_ptr(p, #p, THIS_FILE, __LINE__)))
292 #define ASSERT_VALID_PTR_OR_NULL(p) ((void)(LIKELY((p == NULL) || ((p) >= 0x200)) ? 0 : __invalid_ptr((p), #p, THIS_FILE, __LINE__)))
294 #if !CONFIG_KDEBUG_DISABLE_TRACE
295 #define TRACE __trace(__func__)
296 #define TRACEMSG(msg,...) __tracemsg(__func__, msg, ## __VA_ARGS__)
298 #define TRACE do {} while(0)
299 #define TRACEMSG(...) do {} while(0)
302 #endif /* !OS_HOSTED */
305 * \name Walls to detect data corruption
309 #define WALL_VALUE (long)0xABADCAFEL
310 #define DECLARE_WALL(name,size) long name[(size) / sizeof(long)];
311 #define FWD_DECLARE_WALL(name,size) extern long name[(size) / sizeof(long)];
312 #define INIT_WALL(name) __init_wall((name), countof(name))
313 #define CHECK_WALL(name) __check_wall((name), countof(name), #name, THIS_FILE, __LINE__)
317 * Check that the given pointer actually points to an object
318 * of the specified type.
320 #define ASSERT_VALID_OBJ(_t, _o) do { \
321 ASSERT_VALID_PTR((_o)); \
322 ASSERT(dynamic_cast<_t>((_o)) != NULL); \
326 * \name Debug object creation and destruction.
328 * These macros help track some kinds of leaks in C++ programs.
329 * Usage is as follows:
334 * DECLARE_INSTANCE_TRACKING(Foo)
344 * DELETE_INSTANCE(Foo);
349 * // Put this in the implementation file of the class
350 * IMPLEMENT_INSTANCE_TRACKING(Foo)
355 * Foo *foo = new Foo;
356 * cout << GET_INSTANCE_COUNT(Foo) << endl; // prints "1"
358 * ASSERT_ZERO_INSTANCES(Foo); // OK
363 #define NEW_INSTANCE(CLASS) do { ++CLASS::__instances } while (0)
364 #define DELETE_INSTANCE(CLASS) do { --CLASS::__instances } while (0)
365 #define ASSERT_ZERO_INSTANCES(CLASS) ASSERT(CLASS::__instances == 0)
366 #define GET_INSTANCE_COUNT(CLASS) (CLASS::__instances)
367 #define DECLARE_INSTANCE_TRACKING(CLASS) static int __instances
368 #define IMPLEMENT_INSTANCE_TRACKING(CLASS) int CLASS::__instances = 0
374 * On UNIX systems the extabilished practice is to define
375 * NDEBUG for release builds and nothing for debug builds.
381 #define DB(x) /* nothing */
383 #define ASSERT(x) ((void)0)
385 #define ASSERT2(x, help) ((void)0)
386 #define ASSERT_VALID_PTR(p) ((void)0)
387 #define ASSERT_VALID_PTR_OR_NULL(p) ((void)0)
388 #define ASSERT_VALID_OBJ(_t, _o) ((void)0)
389 #define TRACE do {} while (0)
390 #if COMPILER_VARIADIC_MACROS
391 #define TRACEMSG(x, ...) do {} while (0)
393 INLINE void TRACEMSG(UNUSED_ARG(const char *, msg), ...)
399 #define DECLARE_WALL(name, size) /* nothing */
400 #define FWD_DECLARE_WALL(name, size) /* nothing */
401 #define INIT_WALL(name) do {} while (0)
402 #define CHECK_WALL(name) do {} while (0)
404 #define NEW_INSTANCE(CLASS) do {} while (0)
405 #define DELETE_INSTANCE(CLASS) do {} while (0)
406 #define ASSERT_ZERO_INSTANCES(CLASS) do {} while (0)
407 #define GET_INSTANCE_COUNT(CLASS) ERROR_ONLY_FOR_DEBUG
408 #define DECLARE_INSTANCE_TRACKING(CLASS)
409 #define IMPLEMENT_INSTANCE_TRACKING(CLASS)
411 INLINE void kdbg_init(void) { /* nop */ }
412 INLINE void kputchar(UNUSED_ARG(char, c)) { /* nop */ }
413 INLINE int kputnum(UNUSED_ARG(int, num)) { return 0; }
414 INLINE void kputs(UNUSED_ARG(const char *, str)) { /* nop */ }
415 INLINE void kdump(UNUSED_ARG(const void *, buf), UNUSED_ARG(size_t, len)) { /* nop */ }
417 #if defined(__cplusplus) && COMPILER_VARIADIC_MACROS
418 /* G++ can't inline functions with variable arguments... */
419 #define kprintf(fmt,...) do { (void)(fmt); } while(0)
421 /* ...but GCC can. */
422 INLINE void kprintf(UNUSED_ARG(const char *, fmt), ...) { /* nop */ }
427 #endif /* DEVLIB_DEBUG_H */