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1 /* -*- Mode: C; tab-width: 4 -*-
2 *
3 * Copyright (c) 1997-2004 Apple Computer, Inc. All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 //---------------------------------------------------------------------------------------------------------------------------
19 /*! @header DebugServices
20
21 Debugging Library
22 */
23
24 #ifndef __DEBUG_SERVICES__
25 #define __DEBUG_SERVICES__
26
27 #include <stdarg.h>
28
29 #include "CommonServices.h"
30
31 #if 0
32 #pragma mark == Settings ==
33 #endif
34
35 //===========================================================================================================================
36 // Settings
37 //===========================================================================================================================
38
39 // General
40
41 #if ( !defined( DEBUG ) )
42 #define DEBUG 0
43 #endif
44
45 #if ( defined( NDEBUG ) && DEBUG )
46 #error NDEBUG defined and DEBUG is also enabled...they need to be in-sync
47 #endif
48
49 // AssertMacros.h/Debugging.h overrides.
50
51 #if ( !defined( DEBUG_OVERRIDE_APPLE_MACROS ) )
52 #define DEBUG_OVERRIDE_APPLE_MACROS 1
53 #endif
54
55 // Routine name. Uses ISO __func__ where possible. Otherwise, uses the best thing that is available (if anything).
56
57 #if ( defined( __MWERKS__ ) || ( __GNUC__ > 2 ) || ( ( __GNUC__ == 2 ) && ( __GNUC_MINOR__ >= 9 ) ) )
58 #define __ROUTINE__ __func__
59 #elif ( defined( __GNUC__ ) )
60 #define __ROUTINE__ __PRETTY_FUNCTION__
61 #elif ( defined( _MSC_VER ) && !defined( _WIN32_WCE ) )
62 #define __ROUTINE__ __FUNCTION__
63 #else
64 #define __ROUTINE__ ""
65 #endif
66
67 // Variable argument macro support. Use ANSI C99 __VA_ARGS__ where possible. Otherwise, use the next best thing.
68
69 #if ( defined( __GNUC__ ) )
70 #if ( ( __GNUC__ > 3 ) || ( ( __GNUC__ == 3 ) && ( __GNUC_MINOR__ >= 3) ) )
71 #define DEBUG_C99_VA_ARGS 1
72 #define DEBUG_GNU_VA_ARGS 0
73 #else
74 #define DEBUG_C99_VA_ARGS 0
75 #define DEBUG_GNU_VA_ARGS 1
76 #endif
77 #elif ( defined( __MWERKS__ ) )
78 #define DEBUG_C99_VA_ARGS 1
79 #define DEBUG_GNU_VA_ARGS 0
80 #else
81 #define DEBUG_C99_VA_ARGS 0
82 #define DEBUG_GNU_VA_ARGS 0
83 #endif
84
85 #if 0
86 #pragma mark == Output ==
87 #endif
88
89 //---------------------------------------------------------------------------------------------------------------------------
90 /*! @defined DEBUG_FPRINTF_ENABLED
91
92 @abstract Enables ANSI C fprintf output.
93 */
94
95 #if ( !defined( DEBUG_FPRINTF_ENABLED ) )
96 #if ( !TARGET_API_MAC_OSX_KERNEL && !TARGET_OS_WINDOWS_CE )
97 #define DEBUG_FPRINTF_ENABLED 1
98 #else
99 #define DEBUG_FPRINTF_ENABLED 0
100 #endif
101 #else
102 #if ( TARGET_API_MAC_OSX_KERNEL || TARGET_OS_WINDOWS_CE )
103 #error fprintf enabled, but not supported on Mac OS X kernel or Windows CE
104 #endif
105 #endif
106
107 //---------------------------------------------------------------------------------------------------------------------------
108 /*! @defined DEBUG_MAC_OS_X_IOLOG_ENABLED
109
110 @abstract Enables IOLog (Mac OS X Kernel) output.
111 */
112
113 #if ( !defined( DEBUG_MAC_OS_X_IOLOG_ENABLED ) )
114 #define DEBUG_MAC_OS_X_IOLOG_ENABLED TARGET_API_MAC_OSX_KERNEL
115 #endif
116
117 //---------------------------------------------------------------------------------------------------------------------------
118 /*! @defined DEBUG_KPRINTF_ENABLED
119
120 @abstract Enables kprintf (Mac OS X Kernel) output.
121 */
122
123 #if ( !defined( DEBUG_KPRINTF_ENABLED ) )
124 #define DEBUG_KPRINTF_ENABLED TARGET_API_MAC_OSX_KERNEL
125 #endif
126
127 //---------------------------------------------------------------------------------------------------------------------------
128 /*! @defined DEBUG_IDEBUG_ENABLED
129
130 @abstract Enables iDebug (Mac OS X user and Kernel) output.
131
132 @discussion
133
134 For Mac OS X kernel development, iDebug is enabled by default because we can dynamically check for the presence
135 of iDebug via some exported IOKit symbols. Mac OS X app usage doesn't allow dynamic detection because it relies
136 on statically linking to the iDebugServices.cp file so for Mac OS X app usage, you have to manually enable iDebug.
137 */
138
139 #if ( !defined( DEBUG_IDEBUG_ENABLED ) )
140 #define DEBUG_IDEBUG_ENABLED TARGET_API_MAC_OSX_KERNEL
141 #endif
142
143 //---------------------------------------------------------------------------------------------------------------------------
144 /*! @defined DEBUG_CORE_SERVICE_ASSERTS_ENABLED
145
146 @abstract Controls whether Core Services assert handling is enabled. Enabling requires CoreServices framework.
147 */
148
149 #if ( !defined( DEBUG_CORE_SERVICE_ASSERTS_ENABLED ) )
150 #if ( defined( __DEBUGGING__ ) )
151 #define DEBUG_CORE_SERVICE_ASSERTS_ENABLED 1
152 #else
153 #define DEBUG_CORE_SERVICE_ASSERTS_ENABLED 0
154 #endif
155 #endif
156
157 //---------------------------------------------------------------------------------------------------------------------------
158 /*! @typedef DebugOutputType
159
160 @abstract Type of debug output (i.e. where the output goes).
161 */
162
163 typedef uint32_t DebugOutputType;
164
165 #define kDebugOutputTypeNone 0x6E6F6E65U // 'none' - no params
166 #define kDebugOutputTypeCustom 0x63757374U // 'cust' - 1st param = function ptr, 2nd param = context
167 #define kDebugOutputTypeFPrintF 0x66707269U // 'fpri' - 1st param = DebugOutputTypeFlags [, 2nd param = filename]
168 #define kDebugOutputTypeiDebug 0x69646267U // 'idbg' - no params
169 #define kDebugOutputTypeKPrintF 0x6B707266U // 'kprf' - no params
170 #define kDebugOutputTypeMacOSXIOLog 0x696C6F67U // 'ilog' - no params
171 #define kDebugOutputTypeMacOSXLog 0x786C6F67U // 'xlog' - no params
172 #define kDebugOutputTypeWindowsDebugger 0x77696E64U // 'wind' - no params
173 #define kDebugOutputTypeWindowsEventLog 0x7765766CU // 'wevl' - 1st param = C-string name, 2nd param = HMODULE or NULL.
174
175 // Console meta output kind - Any kind of Console output (in horizontal order of preference):
176 //
177 // Mac OS X = ANSI printf (viewable in Console.app)
178 // Mac OS X Kernel = IOLog (/var/log/system.log) or kprintf (serial).
179 // Windows = ANSI printf (Console window) or OutputDebugString (debugger).
180 // Other = ANSI printf (viewer varies).
181
182 #define kDebugOutputTypeMetaConsole 0x434F4E53U // 'CONS' - no params
183
184 //---------------------------------------------------------------------------------------------------------------------------
185 /*! @typedef DebugOutputTypeFlags
186
187 @abstract Flags controlling how the output type is configured.
188
189 @constant kDebugOutputTypeFlagsTypeMask Bit mask for the output type (e.g. stdout, stderr, file, etc.).
190 @constant kDebugOutputTypeFlagsStdOut fprintf should go to stdout.
191 @constant kDebugOutputTypeFlagsStdErr fprintf should go to stderr.
192 @constant kDebugOutputTypeFlagsFile fprintf should go to a specific file (filename passed as va_arg).
193 */
194
195 typedef unsigned int DebugOutputTypeFlags;
196
197 #define kDebugOutputTypeFlagsTypeMask 0xF
198 #define kDebugOutputTypeFlagsStdOut 1
199 #define kDebugOutputTypeFlagsStdErr 2
200 #define kDebugOutputTypeFlagsFile 10
201
202 //---------------------------------------------------------------------------------------------------------------------------
203 /*! @typedef DebugOutputFunctionPtr
204
205 @abstract Function ptr for a custom callback to print debug output.
206 */
207
208 typedef void ( *DebugOutputFunctionPtr )( char *inData, size_t inSize, void *inContext );
209
210 //===========================================================================================================================
211 // Constants
212 //===========================================================================================================================
213
214 #if 0
215 #pragma mark == Flags ==
216 #endif
217
218 //---------------------------------------------------------------------------------------------------------------------------
219 /*! @typedef DebugFlags
220
221 @abstract Flags controlling how output is printed.
222 */
223
224 typedef uint32_t DebugFlags;
225
226 #define kDebugFlagsNone 0
227 #define kDebugFlagsNoAddress ( 1 << 0 )
228 #define kDebugFlagsNoOffset ( 1 << 1 )
229 #define kDebugFlags32BitOffset ( 1 << 2 )
230 #define kDebugFlagsNoASCII ( 1 << 3 )
231 #define kDebugFlagsNoNewLine ( 1 << 4 )
232 #define kDebugFlags8BitSeparator ( 1 << 5 )
233 #define kDebugFlags16BitSeparator ( 1 << 6 )
234 #define kDebugFlagsNo32BitSeparator ( 1 << 7 )
235 #define kDebugFlagsNo16ByteHexPad ( 1 << 8 )
236 #define kDebugFlagsNoByteCount ( 1 << 9 )
237
238 //---------------------------------------------------------------------------------------------------------------------------
239 /*! @enum DebugTaskLevelFlags
240
241 @abstract Flags indicating the task level.
242 */
243
244 enum
245 {
246 kDebugInterruptLevelShift = 0,
247 kDebugInterruptLevelMask = 0x00000007,
248 kDebugInVBLTaskMask = 0x00000010,
249 kDebugInDeferredTaskMask = 0x00000020,
250 kDebugInSecondaryInterruptHandlerMask = 0x00000040,
251 kDebugPageFaultFatalMask = 0x00000100, // There should be a "kPageFaultFatalMask" in Debugging.h.
252 kDebugMPTaskLevelMask = 0x00000200, // There should be a "kMPTaskLevelMask" in Debugging.h.
253 kDebugInterruptDepthShift = 16,
254 kDebugInterruptDepthMask = 0x00FF0000
255 };
256
257 #define DebugExtractTaskLevelInterruptLevel( LEVEL ) \
258 ( ( ( LEVEL ) &kDebugInterruptLevelMask ) >> kDebugInterruptLevelShift )
259
260 #define DebugExtractTaskLevelInterruptDepth( LEVEL ) \
261 ( ( ( LEVEL ) &kDebugInterruptDepthMask ) >> kDebugInterruptDepthShift )
262
263 #if 0
264 #pragma mark == Levels ==
265 #endif
266
267 //===========================================================================================================================
268 // Constants & Types - Levels
269 //===========================================================================================================================
270
271 //---------------------------------------------------------------------------------------------------------------------------
272 /*! @typedef DebugLevel
273
274 @abstract Level used to control debug logging.
275 */
276
277 typedef int32_t DebugLevel;
278
279 // Levels
280
281 #define kDebugLevelMask 0x0000FFFF
282 #define kDebugLevelChatty 100
283 #define kDebugLevelVerbose 500
284 #define kDebugLevelTrace 800
285 #define kDebugLevelInfo 1000
286 #define kDebugLevelNotice 3000
287 #define kDebugLevelWarning 5000
288 #define kDebugLevelAssert 6000
289 #define kDebugLevelRequire 7000
290 #define kDebugLevelError 8000
291 #define kDebugLevelCritical 9000
292 #define kDebugLevelAlert 10000
293 #define kDebugLevelEmergency 11000
294 #define kDebugLevelTragic 12000
295 #define kDebugLevelMax 0x0000FFFF
296
297 // Level Flags
298
299 #define kDebugLevelFlagMask 0xFFFF0000
300 #define kDebugLevelFlagStackTrace 0x00010000
301 #define kDebugLevelFlagDebugBreak 0x00020000
302
303 //---------------------------------------------------------------------------------------------------------------------------
304 /*! @typedef LogLevel
305
306 @abstract Level used to control which events are logged.
307 */
308
309 typedef int32_t LogLevel;
310
311 #define kLogLevelUninitialized -1L
312 #define kLogLevelAll 0L
313 #define kLogLevelChatty 100L
314 #define kLogLevelVerbose 500L
315 #define kLogLevelTrace 800L
316 #define kLogLevelInfo 1000L
317 #define kLogLevelNotice 3000L
318 #define kLogLevelWarning 4000L
319 #define kLogLevelAssert 6000L
320 #define kLogLevelRequire 7000L
321 #define kLogLevelError 8000L
322 #define kLogLevelCritical 9000L
323 #define kLogLevelAlert 10000L
324 #define kLogLevelEmergency 11000L
325 #define kLogLevelTragic 12000L
326 #define kLogLevelOff 0x0000FFFEL
327
328 #if 0
329 #pragma mark == Properties ==
330 #endif
331
332 //---------------------------------------------------------------------------------------------------------------------------
333 /*! @typedef DebugPropertyTag
334
335 @abstract Tag for properties.
336 */
337
338 typedef uint32_t DebugPropertyTag;
339
340 #define kDebugPropertyTagPrintLevelMin 0x6D696E70U // 'minp' Get: 1st param = DebugLevel *
341 // Set: 1st param = DebugLevel
342
343 #define kDebugPropertyTagPrintLevel kDebugPropertyTagPrintLevelMin
344
345 #define kDebugPropertyTagPrintLevelMax 0x706D786CU // 'maxp' Get: 1st param = DebugLevel *
346 // Set: 1st param = DebugLevel
347
348 #define kDebugPropertyTagBreakLevel 0x62726B6CU // 'brkl' Get: 1st param = DebugLevel *
349 // Set: 1st param = DebugLevel
350 #if 0
351 #pragma mark == General macros ==
352 #endif
353
354 //---------------------------------------------------------------------------------------------------------------------------
355 /*! @defined DEBUG_UNUSED
356
357 @abstract Macro to mark a paramter as unused to avoid unused parameter warnings.
358
359 @discussion
360
361 There is no universally supported pragma/attribute for indicating a variable is unused. DEBUG_UNUSED lets us
362 indicate a variable is unused in a manner that is supported by most compilers.
363 */
364
365 #define DEBUG_UNUSED( X ) (void)( X )
366
367 //---------------------------------------------------------------------------------------------------------------------------
368 /*! @defined DEBUG_USE_ONLY
369
370 @abstract Macro to mark a variable as used only when debugging is enabled.
371
372 @discussion
373
374 Variables are sometimes needed only for debugging. When debugging is turned off, these debug-only variables generate
375 compiler warnings about unused variables. To eliminate these warnings, use these macros to indicate variables that
376 are only used for debugging.
377 */
378
379 #if ( DEBUG )
380 #define DEBUG_USE_ONLY( X )
381 #else
382 #define DEBUG_USE_ONLY( X ) (void)( X )
383 #endif
384
385 //---------------------------------------------------------------------------------------------------------------------------
386 /*! @defined DEBUG_LOCAL
387
388 @abstract Macros to make variables and functions static when debugging is off, but extern when debugging is on.
389
390 @discussion
391
392 Rather than using "static" directly, using this macros allows you to access these variables external while
393 debugging without being penalized for production builds.
394 */
395
396 #if ( DEBUG )
397 #define DEBUG_LOCAL
398 #else
399 #define DEBUG_LOCAL static
400 #endif
401
402 //---------------------------------------------------------------------------------------------------------------------------
403 /*! @defined DEBUG_STATIC
404
405 @abstract Macros to make variables and functions static when debugging is off, but extern when debugging is on.
406
407 @discussion
408
409 Rather than using "static" directly, using this macros allows you to access these variables external while
410 debugging without being penalized for production builds.
411 */
412
413 #if ( DEBUG )
414 #define DEBUG_STATIC
415 #else
416 #define DEBUG_STATIC static
417 #endif
418
419 //---------------------------------------------------------------------------------------------------------------------------
420 /*! @defined DEBUG_EXPORT
421
422 @abstract Macros to export variables.
423
424 @discussion
425
426 "__private_extern__" is a hack for IOKit to allow symbols to be exported from compilation units, but
427 // not exported outside a driver (IOKit uses a lame global namespace for symbols). This still does not
428 // solve the problem of multiple drivers in the same dependency chain since they share symbols.
429 */
430
431 #if ( TARGET_API_MAC_OSX_KERNEL )
432 #define DEBUG_EXPORT __private_extern__
433 #else
434 #define DEBUG_EXPORT extern
435 #endif
436
437 //---------------------------------------------------------------------------------------------------------------------------
438 /*! @defined debug_add
439
440 @abstract Macro to add (or subtract if negative) a value when debugging is on. Does nothing if debugging is off.
441 */
442
443 #if ( DEBUG )
444 #define debug_add( A, B ) ( A ) += ( B )
445 #else
446 #define debug_add( A, B )
447 #endif
448
449 //---------------------------------------------------------------------------------------------------------------------------
450 /*! @defined debug_perform
451
452 @abstract Macro to perform something in debug-only builds.
453 */
454
455 #if ( DEBUG )
456 #define debug_perform( X ) do { X; } while( 0 )
457 #else
458 #define debug_perform( X )
459 #endif
460
461 //---------------------------------------------------------------------------------------------------------------------------
462 /*! @function translate_errno
463
464 @abstract Returns 0 if the test success. If the test fails, returns errno if non-zero and othewise the alternate error.
465 */
466
467 #define translate_errno( TEST, ERRNO, ALTERNATE_ERROR ) ( ( TEST ) ? 0 : ( ERRNO ) ? ( ERRNO ) : ( ALTERNATE_ERROR ) )
468
469 #if 0
470 #pragma mark == Compile Time macros ==
471 #endif
472
473 //---------------------------------------------------------------------------------------------------------------------------
474 /*! @defined check_compile_time
475
476 @abstract Performs a compile-time check of something such as the size of an int.
477
478 @discussion
479
480 This declares an array with a size that is determined by a compile-time expression. If the expression evaluates
481 to 0, the array has a size of -1, which is illegal and generates a compile-time error.
482
483 For example:
484
485 check_compile_time( sizeof( int ) == 4 );
486
487 Note: This only works with compile-time expressions.
488 Note: This only works in places where extern declarations are allowed (e.g. global scope).
489
490 References:
491
492 <http://www.jaggersoft.com/pubs/CVu11_3.html>
493 <http://www.jaggersoft.com/pubs/CVu11_5.html>
494
495 Note: The following macros differ from the macros on the www.jaggersoft.com web site because those versions do not
496 work with GCC due to GCC allow a zero-length array. Using a -1 condition turned out to be more portable.
497 */
498
499 #define check_compile_time( X ) extern int debug_compile_time_name[ ( X ) ? 1 : -1 ]
500
501 //---------------------------------------------------------------------------------------------------------------------------
502 /*! @defined check_compile_time_code
503
504 @abstract Perform a compile-time check, suitable for placement in code, of something such as the size of an int.
505
506 @discussion
507
508 This creates a switch statement with an existing case for 0 and an additional case using the result of a
509 compile-time expression. A switch statement cannot have two case labels with the same constant so if the
510 compile-time expression evaluates to 0, it is illegal and generates a compile-time error. If the compile-time
511 expression does not evaluate to 0, the resulting value is used as the case label and it compiles without error.
512
513 For example:
514
515 check_compile_time_code( sizeof( int ) == 4 );
516
517 Note: This only works with compile-time expressions.
518 Note: This does not work in a global scope so it must be inside a function.
519
520 References:
521
522 <http://www.jaggersoft.com/pubs/CVu11_3.html>
523 <http://www.jaggersoft.com/pubs/CVu11_5.html>
524 */
525
526 #define check_compile_time_code( X ) switch( 0 ) { case 0: case X:; }
527
528 #if 0
529 #pragma mark == check macros ==
530 #endif
531
532 //---------------------------------------------------------------------------------------------------------------------------
533 /*! @defined check
534
535 @abstract Check that an expression is true (non-zero).
536
537 @discussion
538
539 If expression evalulates to false, this prints debugging information (actual expression string, file, line number,
540 function name, etc.) using the default debugging output method.
541
542 Code inside check() statements is not compiled into production builds.
543 */
544
545 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
546 #undef check
547 #endif
548 #if ( !defined( check ) )
549 #if ( DEBUG )
550 #define check( X ) \
551 do \
552 { \
553 if( !( X ) ) \
554 { \
555 debug_print_assert( 0, # X, NULL, __FILE__, __LINE__, __ROUTINE__ ); \
556 } \
557 } while( 0 )
558 #else
559 #define check( X )
560 #endif
561 #endif
562
563 //---------------------------------------------------------------------------------------------------------------------------
564 /*! @defined check_string
565
566 @abstract Check that an expression is true (non-zero) with an explanation.
567
568 @discussion
569
570 If expression evalulates to false, this prints debugging information (actual expression string, file, line number,
571 function name, etc.) and a custom explanation string using the default debugging output method.
572
573 Code inside check_string() statements is not compiled into production builds.
574 */
575
576 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
577 #undef check_string
578 #endif
579 #if ( !defined( check_string ) )
580 #if ( DEBUG )
581 #define check_string( X, STR ) \
582 do \
583 { \
584 if( !( X ) ) \
585 { \
586 debug_print_assert( 0, # X, STR, __FILE__, __LINE__, __ROUTINE__ ); \
587 } \
588 \
589 } while( 0 )
590 #else
591 #define check_string( X, STR )
592 #endif
593 #endif
594
595 //---------------------------------------------------------------------------------------------------------------------------
596 /*! @defined check_noerr
597
598 @abstract Check that an error code is noErr (0).
599
600 @discussion
601
602 If the error code is non-0, this prints debugging information (actual expression string, file, line number,
603 function name, etc.) using the default debugging output method.
604
605 Code inside check_noerr() statements is not compiled into production builds.
606 */
607
608 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
609 #undef check_noerr
610 #endif
611 #if ( !defined( check_noerr ) )
612 #if ( DEBUG )
613 #define check_noerr( ERR ) \
614 do \
615 { \
616 int_least32_t localErr; \
617 \
618 localErr = (int_least32_t)( ERR ); \
619 if( localErr != 0 ) \
620 { \
621 debug_print_assert( localErr, NULL, NULL, __FILE__, __LINE__, __ROUTINE__ ); \
622 } \
623 \
624 } while( 0 )
625 #else
626 #define check_noerr( ERR )
627 #endif
628 #endif
629
630 //---------------------------------------------------------------------------------------------------------------------------
631 /*! @defined check_noerr_string
632
633 @abstract Check that an error code is noErr (0) with an explanation.
634
635 @discussion
636
637 If the error code is non-0, this prints debugging information (actual expression string, file, line number,
638 function name, etc.) and a custom explanation string using the default debugging output method.
639
640 Code inside check_noerr_string() statements is not compiled into production builds.
641 */
642
643 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
644 #undef check_noerr_string
645 #endif
646 #if ( !defined( check_noerr_string ) )
647 #if ( DEBUG )
648 #define check_noerr_string( ERR, STR ) \
649 do \
650 { \
651 int_least32_t localErr; \
652 \
653 localErr = (int_least32_t)( ERR ); \
654 if( localErr != 0 ) \
655 { \
656 debug_print_assert( localErr, NULL, STR, __FILE__, __LINE__, __ROUTINE__ ); \
657 } \
658 \
659 } while( 0 )
660 #else
661 #define check_noerr_string( ERR, STR )
662 #endif
663 #endif
664
665 //---------------------------------------------------------------------------------------------------------------------------
666 /*! @defined check_translated_errno
667
668 @abstract Check a condition and prints errno (if non-zero) to the log.
669
670 @discussion
671
672 Code inside check_translated_errno() statements is not compiled into production builds.
673 */
674
675 #if ( !defined( check_translated_errno ) )
676 #if ( DEBUG )
677 #define check_translated_errno( TEST, ERRNO, ALTERNATE_ERROR ) \
678 do \
679 { \
680 if( !( TEST ) ) \
681 { \
682 int_least32_t localErr; \
683 \
684 localErr = (int_least32_t)( ERRNO ); \
685 localErr = ( localErr != 0 ) ? localErr : (int_least32_t)( ALTERNATE_ERROR ); \
686 debug_print_assert( localErr, # TEST, NULL, __FILE__, __LINE__, __ROUTINE__ ); \
687 } \
688 \
689 } while( 0 )
690 #else
691 #define check_translated_errno( TEST, ERRNO, ALTERNATE_ERROR )
692 #endif
693 #endif
694
695 //---------------------------------------------------------------------------------------------------------------------------
696 /*! @defined check_ptr_overlap
697
698 @abstract Checks that two ptrs do not overlap.
699 */
700
701 #define check_ptr_overlap( P1, P1_SIZE, P2, P2_SIZE ) \
702 do \
703 { \
704 check( !( ( (uintptr_t)( P1 ) >= (uintptr_t)( P2 ) ) && \
705 ( (uintptr_t)( P1 ) < ( ( (uintptr_t)( P2 ) ) + ( P2_SIZE ) ) ) ) ); \
706 check( !( ( (uintptr_t)( P2 ) >= (uintptr_t)( P1 ) ) && \
707 ( (uintptr_t)( P2 ) < ( ( (uintptr_t)( P1 ) ) + ( P1_SIZE ) ) ) ) ); \
708 \
709 } while( 0 )
710
711 #if 0
712 #pragma mark == require macros ==
713 #endif
714
715 //---------------------------------------------------------------------------------------------------------------------------
716 /*! @defined require
717
718 @abstract Requires that an expression evaluate to true.
719
720 @discussion
721
722 If expression evalulates to false, this prints debugging information (actual expression string, file, line number,
723 function name, etc.) using the default debugging output method then jumps to a label.
724 */
725
726 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
727 #undef require
728 #endif
729 #if ( !defined( require ) )
730 #define require( X, LABEL ) \
731 do \
732 { \
733 if( !( X ) ) \
734 { \
735 debug_print_assert( 0, # X, NULL, __FILE__, __LINE__, __ROUTINE__ ); \
736 goto LABEL; \
737 } \
738 \
739 } while( 0 )
740 #endif
741
742 //---------------------------------------------------------------------------------------------------------------------------
743 /*! @defined require_string
744
745 @abstract Requires that an expression evaluate to true with an explanation.
746
747 @discussion
748
749 If expression evalulates to false, this prints debugging information (actual expression string, file, line number,
750 function name, etc.) and a custom explanation string using the default debugging output method then jumps to a label.
751 */
752
753 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
754 #undef require_string
755 #endif
756 #if ( !defined( require_string ) )
757 #define require_string( X, LABEL, STR ) \
758 do \
759 { \
760 if( !( X ) ) \
761 { \
762 debug_print_assert( 0, # X, STR, __FILE__, __LINE__, __ROUTINE__ ); \
763 goto LABEL; \
764 } \
765 \
766 } while( 0 )
767 #endif
768
769 //---------------------------------------------------------------------------------------------------------------------------
770 /*! @defined require_quiet
771
772 @abstract Requires that an expression evaluate to true.
773
774 @discussion
775
776 If expression evalulates to false, this jumps to a label. No debugging information is printed.
777 */
778
779 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
780 #undef require_quiet
781 #endif
782 #if ( !defined( require_quiet ) )
783 #define require_quiet( X, LABEL ) \
784 do \
785 { \
786 if( !( X ) ) \
787 { \
788 goto LABEL; \
789 } \
790 \
791 } while( 0 )
792 #endif
793
794 //---------------------------------------------------------------------------------------------------------------------------
795 /*! @defined require_noerr
796
797 @abstract Require that an error code is noErr (0).
798
799 @discussion
800
801 If the error code is non-0, this prints debugging information (actual expression string, file, line number,
802 function name, etc.) using the default debugging output method then jumps to a label.
803 */
804
805 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
806 #undef require_noerr
807 #endif
808 #if ( !defined( require_noerr ) )
809 #define require_noerr( ERR, LABEL ) \
810 do \
811 { \
812 int_least32_t localErr; \
813 \
814 localErr = (int_least32_t)( ERR ); \
815 if( localErr != 0 ) \
816 { \
817 debug_print_assert( localErr, NULL, NULL, __FILE__, __LINE__, __ROUTINE__ ); \
818 goto LABEL; \
819 } \
820 \
821 } while( 0 )
822 #endif
823
824 //---------------------------------------------------------------------------------------------------------------------------
825 /*! @defined require_noerr_string
826
827 @abstract Require that an error code is noErr (0).
828
829 @discussion
830
831 If the error code is non-0, this prints debugging information (actual expression string, file, line number,
832 function name, etc.), and a custom explanation string using the default debugging output method using the
833 default debugging output method then jumps to a label.
834 */
835
836 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
837 #undef require_noerr_string
838 #endif
839 #if ( !defined( require_noerr_string ) )
840 #define require_noerr_string( ERR, LABEL, STR ) \
841 do \
842 { \
843 int_least32_t localErr; \
844 \
845 localErr = (int_least32_t)( ERR ); \
846 if( localErr != 0 ) \
847 { \
848 debug_print_assert( localErr, NULL, STR, __FILE__, __LINE__, __ROUTINE__ ); \
849 goto LABEL; \
850 } \
851 \
852 } while( 0 )
853 #endif
854
855 //---------------------------------------------------------------------------------------------------------------------------
856 /*! @defined require_noerr_action_string
857
858 @abstract Require that an error code is noErr (0).
859
860 @discussion
861
862 If the error code is non-0, this prints debugging information (actual expression string, file, line number,
863 function name, etc.), and a custom explanation string using the default debugging output method using the
864 default debugging output method then executes an action and jumps to a label.
865 */
866
867 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
868 #undef require_noerr_action_string
869 #endif
870 #if ( !defined( require_noerr_action_string ) )
871 #define require_noerr_action_string( ERR, LABEL, ACTION, STR ) \
872 do \
873 { \
874 int_least32_t localErr; \
875 \
876 localErr = (int_least32_t)( ERR ); \
877 if( localErr != 0 ) \
878 { \
879 debug_print_assert( localErr, NULL, STR, __FILE__, __LINE__, __ROUTINE__ ); \
880 { ACTION; } \
881 goto LABEL; \
882 } \
883 \
884 } while( 0 )
885 #endif
886
887 //---------------------------------------------------------------------------------------------------------------------------
888 /*! @defined require_noerr_quiet
889
890 @abstract Require that an error code is noErr (0).
891
892 @discussion
893
894 If the error code is non-0, this jumps to a label. No debugging information is printed.
895 */
896
897 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
898 #undef require_noerr_quiet
899 #endif
900 #if ( !defined( require_noerr_quiet ) )
901 #define require_noerr_quiet( ERR, LABEL ) \
902 do \
903 { \
904 if( ( ERR ) != 0 ) \
905 { \
906 goto LABEL; \
907 } \
908 \
909 } while( 0 )
910 #endif
911
912 //---------------------------------------------------------------------------------------------------------------------------
913 /*! @defined require_noerr_action
914
915 @abstract Require that an error code is noErr (0) with an action to execute otherwise.
916
917 @discussion
918
919 If the error code is non-0, this prints debugging information (actual expression string, file, line number,
920 function name, etc.) using the default debugging output method then executes an action and jumps to a label.
921 */
922
923 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
924 #undef require_noerr_action
925 #endif
926 #if ( !defined( require_noerr_action ) )
927 #define require_noerr_action( ERR, LABEL, ACTION ) \
928 do \
929 { \
930 int_least32_t localErr; \
931 \
932 localErr = (int_least32_t)( ERR ); \
933 if( localErr != 0 ) \
934 { \
935 debug_print_assert( localErr, NULL, NULL, __FILE__, __LINE__, __ROUTINE__ ); \
936 { ACTION; } \
937 goto LABEL; \
938 } \
939 \
940 } while( 0 )
941 #endif
942
943 //---------------------------------------------------------------------------------------------------------------------------
944 /*! @defined require_noerr_action_quiet
945
946 @abstract Require that an error code is noErr (0) with an action to execute otherwise.
947
948 @discussion
949
950 If the error code is non-0, this executes an action and jumps to a label. No debugging information is printed.
951 */
952
953 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
954 #undef require_noerr_action_quiet
955 #endif
956 #if ( !defined( require_noerr_action_quiet ) )
957 #define require_noerr_action_quiet( ERR, LABEL, ACTION ) \
958 do \
959 { \
960 if( ( ERR ) != 0 ) \
961 { \
962 { ACTION; } \
963 goto LABEL; \
964 } \
965 \
966 } while( 0 )
967 #endif
968
969 //---------------------------------------------------------------------------------------------------------------------------
970 /*! @defined require_action
971
972 @abstract Requires that an expression evaluate to true with an action to execute otherwise.
973
974 @discussion
975
976 If expression evalulates to false, this prints debugging information (actual expression string, file, line number,
977 function name, etc.) using the default debugging output method then executes an action and jumps to a label.
978 */
979
980 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
981 #undef require_action
982 #endif
983 #if ( !defined( require_action ) )
984 #define require_action( X, LABEL, ACTION ) \
985 do \
986 { \
987 if( !( X ) ) \
988 { \
989 debug_print_assert( 0, # X, NULL, __FILE__, __LINE__, __ROUTINE__ ); \
990 { ACTION; } \
991 goto LABEL; \
992 } \
993 \
994 } while( 0 )
995 #endif
996
997 //---------------------------------------------------------------------------------------------------------------------------
998 /*! @defined require_action_quiet
999
1000 @abstract Requires that an expression evaluate to true with an action to execute otherwise.
1001
1002 @discussion
1003
1004 If expression evalulates to false, this executes an action and jumps to a label. No debugging information is printed.
1005 */
1006
1007 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
1008 #undef require_action_quiet
1009 #endif
1010 #if ( !defined( require_action_quiet ) )
1011 #define require_action_quiet( X, LABEL, ACTION ) \
1012 do \
1013 { \
1014 if( !( X ) ) \
1015 { \
1016 { ACTION; } \
1017 goto LABEL; \
1018 } \
1019 \
1020 } while( 0 )
1021 #endif
1022
1023 //---------------------------------------------------------------------------------------------------------------------------
1024 /*! @defined require_action_string
1025
1026 @abstract Requires that an expression evaluate to true with an explanation and action to execute otherwise.
1027
1028 @discussion
1029
1030 If expression evalulates to false, this prints debugging information (actual expression string, file, line number,
1031 function name, etc.) and a custom explanation string using the default debugging output method then executes an
1032 action and jumps to a label.
1033 */
1034
1035 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
1036 #undef require_action_string
1037 #endif
1038 #if ( !defined( require_action_string ) )
1039 #define require_action_string( X, LABEL, ACTION, STR ) \
1040 do \
1041 { \
1042 if( !( X ) ) \
1043 { \
1044 debug_print_assert( 0, # X, STR, __FILE__, __LINE__, __ROUTINE__ ); \
1045 { ACTION; } \
1046 goto LABEL; \
1047 } \
1048 \
1049 } while( 0 )
1050
1051 #endif
1052
1053 //---------------------------------------------------------------------------------------------------------------------------
1054 /*! @defined require_throw
1055
1056 @abstract Requires that an expression evaluates to true or an exception is thrown.
1057
1058 @discussion
1059
1060 If the expression evaluates to false, this prints debugging information (actual expression string, file,
1061 line number, function name, etc.) using the default debugging output method then throws an exception.
1062 */
1063
1064 #if ( defined( __cplusplus ) )
1065 #define require_throw( X ) \
1066 do \
1067 { \
1068 if( !( X ) ) \
1069 { \
1070 debug_print_assert( 0, # X, NULL, __FILE__, __LINE__, __ROUTINE__ ); \
1071 throw kUnknownErr; \
1072 } \
1073 \
1074 } while( 0 )
1075 #endif
1076
1077 #if 0
1078 #pragma mark == Design-By-Contract macros ==
1079 #endif
1080
1081 //===========================================================================================================================
1082 // Design-By-Contract macros
1083 //===========================================================================================================================
1084
1085 #define ensure( X ) check( X )
1086 #define ensure_string( X, STR ) check_string( X, STR )
1087 #define ensure_noerr( ERR ) check_noerr( ERR )
1088 #define ensure_noerr_string( ERR, STR ) check_noerr_string( ERR, STR )
1089 #define ensure_translated_errno( TEST, ERRNO, ALTERNATE_ERROR ) check_translated_errno( TEST, ERRNO, ALTERNATE_ERROR )
1090
1091 // Note: Design-By-Contract "require" macros are already defined elsewhere.
1092
1093 #if 0
1094 #pragma mark == Expect macros ==
1095 #endif
1096
1097 //===========================================================================================================================
1098 // Expect macros
1099 //===========================================================================================================================
1100
1101 // Expect macros allow code to include runtime checking of things that should not happen in shipping code (e.g. internal
1102 // programmer errors, such as a NULL parameter where it is not allowed). Once the code has been verified to work correctly
1103 // without asserting, the DEBUG_EXPECT_VERIFIED conditional can be set to eliminate the error checking entirely. It can
1104 // also be useful to measure the cost of error checking code by profiling with it enable and with it disabled.
1105
1106 #if ( DEBUG_EXPECT_VERIFIED )
1107 #define require_expect
1108 #define require_string_expect
1109 #define require_quiet_expect
1110 #define require_noerr_expect
1111 #define require_noerr_string_expect
1112 #define require_noerr_action_string_expect
1113 #define require_noerr_quiet_expect
1114 #define require_noerr_action_expect
1115 #define require_noerr_action_quiet_expect
1116 #define require_action_expect
1117 #define require_action_quiet_expect
1118 #define require_action_string_expect
1119 #else
1120 #define require_expect require
1121 #define require_string_expect require_string
1122 #define require_quiet_expect require_quiet
1123 #define require_noerr_expect require_noerr
1124 #define require_noerr_string_expect require_noerr_string
1125 #define require_noerr_action_string_expect require_noerr_action_string
1126 #define require_noerr_quiet_expect require_noerr_quiet
1127 #define require_noerr_action_expect require_noerr_action
1128 #define require_noerr_action_quiet_expect require_noerr_action_quiet
1129 #define require_action_expect require_action
1130 #define require_action_quiet_expect require_action_quiet
1131 #define require_action_string_expect require_action_string
1132 #endif
1133
1134 #if 0
1135 #pragma mark == Output macros ==
1136 #endif
1137
1138 //---------------------------------------------------------------------------------------------------------------------------
1139 /*! @defined debug_string
1140
1141 @abstract Prints a debugging C string.
1142 */
1143
1144 #if ( DEBUG_OVERRIDE_APPLE_MACROS )
1145 #undef debug_string
1146 #endif
1147 #if ( !defined( debug_string ) )
1148 #if ( DEBUG )
1149 #define debug_string( STR ) \
1150 do \
1151 { \
1152 debug_print_assert( 0, NULL, STR, __FILE__, __LINE__, __ROUTINE__ ); \
1153 \
1154 } while( 0 )
1155 #else
1156 #define debug_string( STR )
1157 #endif
1158 #endif
1159
1160 //---------------------------------------------------------------------------------------------------------------------------
1161 /*! @defined debug_print_assert
1162
1163 @abstract Prints an assertion.
1164 */
1165
1166 #if ( DEBUG )
1167 #define debug_print_assert( ERROR_CODE, ASSERT_STRING, MESSAGE, FILENAME, LINE_NUMBER, FUNCTION ) \
1168 DebugPrintAssert( ERROR_CODE, ASSERT_STRING, MESSAGE, FILENAME, LINE_NUMBER, FUNCTION )
1169 #else
1170 #define debug_print_assert( ERROR_CODE, ASSERT_STRING, MESSAGE, FILENAME, LINE_NUMBER, FUNCTION )
1171 #endif
1172
1173 //---------------------------------------------------------------------------------------------------------------------------
1174 /*! @defined dlog
1175
1176 @abstract Prints a debug-only message.
1177 */
1178
1179 #if ( DEBUG )
1180 #if ( DEBUG_C99_VA_ARGS )
1181 #define dlog(... ) DebugPrintF( __VA_ARGS__ )
1182 #elif ( DEBUG_GNU_VA_ARGS )
1183 #define dlog( ARGS... ) DebugPrintF( ## ARGS )
1184 #else
1185 #define dlog DebugPrintF
1186 #endif
1187 #else
1188 #if ( DEBUG_C99_VA_ARGS )
1189 #define dlog(... )
1190 #elif ( DEBUG_GNU_VA_ARGS )
1191 #define dlog( ARGS... )
1192 #else
1193 #define dlog while( 0 )
1194 #endif
1195 #endif
1196
1197 //---------------------------------------------------------------------------------------------------------------------------
1198 /*! @defined dlogv
1199
1200 @abstract Prints a debug-only message.
1201 */
1202
1203 #if ( DEBUG )
1204 #define dlogv( LEVEL, FORMAT, LIST ) DebugPrintFVAList( ( LEVEL ), ( FORMAT ), ( LIST ) )
1205 #else
1206 #define dlogv( LEVEL, FORMAT, LIST )
1207 #endif
1208
1209 //---------------------------------------------------------------------------------------------------------------------------
1210 /*! @defined dlogmem
1211
1212 @abstract Prints a debug-only dump of memory.
1213 */
1214
1215 #if ( DEBUG )
1216 #define dlogmem( LEVEL, PTR, SIZE ) \
1217 DebugHexDump( ( LEVEL ), 0, NULL, 0, 0, NULL, 0, ( PTR ), ( PTR ), ( SIZE ), kDebugFlagsNone, NULL, 0 )
1218 #else
1219 #define dlogmem( LEVEL, PTR, SIZE )
1220 #endif
1221
1222 //---------------------------------------------------------------------------------------------------------------------------
1223 /*! @defined DebugNSLog
1224
1225 @abstract Debug-only macro for the Cocoa NSLog function.
1226 */
1227
1228 #if ( DEBUG )
1229 #if ( DEBUG_C99_VA_ARGS )
1230 #define DebugNSLog(... ) NSLog( __VA_ARGS__ )
1231 #elif ( DEBUG_GNU_VA_ARGS )
1232 #define DebugNSLog( ARGS... ) NSLog( ## ARGS )
1233 #else
1234 #define DebugNSLog NSLog
1235 #endif
1236 #else
1237 #if ( DEBUG_C99_VA_ARGS )
1238 #define DebugNSLog(... )
1239 #elif ( DEBUG_GNU_VA_ARGS )
1240 #define DebugNSLog( ARGS... )
1241 #else
1242 #define DebugNSLog while( 0 )
1243 #endif
1244 #endif
1245
1246 #if 0
1247 #pragma mark == Routines - General ==
1248 #endif
1249
1250 #ifdef __cplusplus
1251 extern "C" {
1252 #endif
1253
1254 //---------------------------------------------------------------------------------------------------------------------------
1255 /*! @function DebugInitialize
1256
1257 @abstract Initializes the debugging library for a specific kind of output.
1258
1259 @param inType
1260 @param varArg Variable number parameters, controlled by the "inType" parameter.
1261 */
1262
1263 #if ( DEBUG )
1264 DEBUG_EXPORT OSStatus DebugInitialize( DebugOutputType inType, ... );
1265 #endif
1266
1267 #if ( DEBUG )
1268 #if ( DEBUG_C99_VA_ARGS )
1269 #define debug_initialize(... ) DebugInitialize( __VA_ARGS__ )
1270 #elif ( DEBUG_GNU_VA_ARGS )
1271 #define debug_initialize( ARGS... ) DebugInitialize( ## ARGS )
1272 #else
1273 #define debug_initialize DebugInitialize
1274 #endif
1275 #else
1276 #if ( DEBUG_C99_VA_ARGS )
1277 #define debug_initialize(... )
1278 #elif ( DEBUG_GNU_VA_ARGS )
1279 #define debug_initialize( ARGS... )
1280 #else
1281 #define debug_initialize while( 0 )
1282 #endif
1283 #endif
1284
1285 //---------------------------------------------------------------------------------------------------------------------------
1286 /*! @function DebugFinalize
1287
1288 @abstract Releases any resources used by the debugging library
1289 */
1290
1291 #if ( DEBUG )
1292 DEBUG_EXPORT void DebugFinalize( void );
1293 #endif
1294
1295 #if ( DEBUG )
1296 #define debug_terminate() DebugFinalize()
1297 #else
1298 #define debug_terminate()
1299 #endif
1300
1301 //---------------------------------------------------------------------------------------------------------------------------
1302 /*! @function DebugGetProperty
1303
1304 @abstract Gets the specified property from the debugging library.
1305 */
1306
1307 #if ( DEBUG )
1308 DEBUG_EXPORT OSStatus DebugGetProperty( DebugPropertyTag inTag, ... );
1309 #endif
1310
1311 #if ( DEBUG )
1312 #if ( DEBUG_C99_VA_ARGS )
1313 #define debug_get_property(... ) DebugGetProperty( __VA_ARGS__ )
1314 #elif ( DEBUG_GNU_VA_ARGS )
1315 #define debug_get_property( ARGS... ) DebugGetProperty( ## ARGS )
1316 #else
1317 #define debug_get_property DebugGetProperty
1318 #endif
1319 #else
1320 #if ( DEBUG_C99_VA_ARGS )
1321 #define debug_get_property(... )
1322 #elif ( DEBUG_GNU_VA_ARGS )
1323 #define debug_get_property( ARGS... )
1324 #else
1325 #define debug_get_property while( 0 )
1326 #endif
1327 #endif
1328
1329 //---------------------------------------------------------------------------------------------------------------------------
1330 /*! @function DebugSetProperty
1331
1332 @abstract Sets the specified property from the debugging library.
1333 */
1334
1335 #if ( DEBUG )
1336 DEBUG_EXPORT OSStatus DebugSetProperty( DebugPropertyTag inTag, ... );
1337 #endif
1338
1339 #if ( DEBUG )
1340 #if ( DEBUG_C99_VA_ARGS )
1341 #define debug_set_property(... ) DebugSetProperty( __VA_ARGS__ )
1342 #elif ( DEBUG_GNU_VA_ARGS )
1343 #define debug_set_property( ARGS... ) DebugSetProperty( ## ARGS )
1344 #else
1345 #define debug_set_property DebugSetProperty
1346 #endif
1347 #else
1348 #if ( DEBUG_C99_VA_ARGS )
1349 #define debug_set_property(... )
1350 #elif ( DEBUG_GNU_VA_ARGS )
1351 #define debug_set_property( ARGS... )
1352 #else
1353 #define debug_set_property while( 0 )
1354 #endif
1355 #endif
1356
1357 #if 0
1358 #pragma mark == Routines - Debugging Output ==
1359 #endif
1360
1361 //---------------------------------------------------------------------------------------------------------------------------
1362 /*! @function DebugPrintF
1363
1364 @abstract Prints a debug message with printf-style formatting.
1365
1366 @param inLevel Error that generated this assert or noErr.
1367
1368 @param inFormatString
1369 C string containing assertion text.
1370
1371 @param VAR_ARG
1372 Variable number of arguments depending on the format string.
1373
1374 @result Number of bytes printed or -1 on error.
1375 */
1376
1377 #if ( DEBUG )
1378 DEBUG_EXPORT size_t DebugPrintF( DebugLevel inLevel, const char *inFormat, ... );
1379 #endif
1380
1381 //---------------------------------------------------------------------------------------------------------------------------
1382 /*! @function DebugPrintFVAList
1383
1384 @abstract va_list version of DebugPrintF. See DebugPrintF for more info.
1385 */
1386
1387 #if ( DEBUG )
1388 DEBUG_EXPORT size_t DebugPrintFVAList( DebugLevel inLevel, const char *inFormat, va_list inArgs );
1389 #endif
1390
1391 //---------------------------------------------------------------------------------------------------------------------------
1392 /*! @function DebugPrintAssert
1393
1394 @abstract Prints a message describing the reason the (e.g. an assert failed), an optional error message,
1395 an optional source filename, an optional source line number.
1396
1397 @param inErrorCode Error that generated this assert or noErr.
1398 @param inAssertString C string containing assertion text.
1399 @param inMessage C string containing a message about the assert.
1400 @param inFileName C string containing path of file where the error occurred.
1401 @param inLineNumber Line number in source file where the error occurred.
1402 @param inFunction C string containing name of function where assert occurred.
1403
1404 @discussion
1405
1406 Example output:
1407
1408 [ASSERT] assert: "dataPtr != NULL" allocate memory for object failed
1409 [ASSERT] where: "MyFile.c", line 123, ("MyFunction")
1410
1411 OR
1412
1413 [ASSERT] error: -6728 (kNoMemoryErr)
1414 [ASSERT] where: "MyFile.c", line 123, ("MyFunction")
1415 */
1416
1417 #if ( DEBUG )
1418 DEBUG_EXPORT void
1419 DebugPrintAssert(
1420 int_least32_t inErrorCode,
1421 const char * inAssertString,
1422 const char * inMessage,
1423 const char * inFilename,
1424 int_least32_t inLineNumber,
1425 const char * inFunction );
1426 #endif
1427
1428 #if 0
1429 #pragma mark == Routines - Utilities ==
1430 #endif
1431
1432 //---------------------------------------------------------------------------------------------------------------------------
1433 /*! @function DebugSNPrintF
1434
1435 @abstract Debugging versions of standard C snprintf with extra features.
1436
1437 @param sbuffer Buffer to receive result. Null terminated unless the buffer size is 0.
1438 @param buflen Size of the buffer including space for the null terminator.
1439 @param fmt printf-style format string.
1440 @param VAR_ARG Variable number of arguments depending on the format string.
1441
1442 @result Number of characters written (minus the null terminator).
1443
1444 @discussion
1445
1446 Extra features over the standard C snprintf:
1447 <pre>
1448 64-bit support for %d (%lld), %i (%lli), %u (%llu), %o (%llo), %x (%llx), and %b (%llb).
1449 %@ - Cocoa/CoreFoundation object. Param is the object. Strings are used directly. Others use CFCopyDescription.
1450 %a - Network Address: %.4a=IPv4, %.6a=Ethernet, %.8a Fibre Channel, %.16a=IPv6. Arg=ptr to network address.
1451 %#a - IPv4 or IPv6 mDNSAddr. Arg=ptr to mDNSAddr.
1452 %##a - IPv4 (if AF_INET defined) or IPv6 (if AF_INET6 defined) sockaddr. Arg=ptr to sockaddr.
1453 %b - Binary representation of integer (e.g. 01101011). Modifiers and arg=the same as %d, %x, etc.
1454 %C - Mac-style FourCharCode (e.g. 'APPL'). Arg=32-bit value to print as a Mac-style FourCharCode.
1455 %H - Hex Dump (e.g. "\x6b\xa7" -> "6B A7"). 1st arg=ptr, 2nd arg=size, 3rd arg=max size.
1456 %#H - Hex Dump & ASCII (e.g. "\x41\x62" -> "6B A7 'Ab'"). 1st arg=ptr, 2nd arg=size, 3rd arg=max size.
1457 %m - Error Message (e.g. 0 -> "kNoErr"). Modifiers and error code arg=the same as %d, %x, etc.
1458 %#s - Pascal-style length-prefixed string. Arg=ptr to string.
1459 %##s - DNS label-sequence name. Arg=ptr to name.
1460 %S - UTF-16 string, 0x0000 terminated. Host order if no BOM. Precision is UTF-16 count. Precision includes BOM.
1461 %#S - Big Endian UTF-16 string (unless BOM overrides). Otherwise, the same as %S.
1462 %##S - Little Endian UTF-16 string (unless BOM overrides). Otherwise, the same as %S.
1463 %U - Universally Unique Identifier (UUID) (e.g. 6ba7b810-9dad-11d1-80b4-00c04fd430c8). Arg=ptr to 16-byte UUID.
1464 </pre>
1465 */
1466
1467 #if ( DEBUG )
1468 DEBUG_EXPORT size_t DebugSNPrintF(char *sbuffer, size_t buflen, const char *fmt, ...);
1469 #endif
1470
1471 //---------------------------------------------------------------------------------------------------------------------------
1472 /*! @function DebugSNPrintFVAList
1473
1474 @abstract va_list version of DebugSNPrintF. See DebugSNPrintF for more info.
1475 */
1476
1477 #if ( DEBUG )
1478 DEBUG_EXPORT size_t DebugSNPrintFVAList(char *sbuffer, size_t buflen, const char *fmt, va_list arg);
1479 #endif
1480
1481 //---------------------------------------------------------------------------------------------------------------------------
1482 /*! @function DebugGetErrorString
1483
1484 @abstract Gets an error string from an error code.
1485
1486 @param inStatus Error code to get the string for.
1487 @param inBuffer Optional buffer to copy the string to for non-static strings. May be null.
1488 @param inBufferSize Size of optional buffer. May be 0.
1489
1490 @result C string containing error string for the error code. Guaranteed to be a valid, static string. If a
1491 buffer is supplied, the return value will always be a pointer to the supplied buffer, which will
1492 contain the best available description of the error code. If a buffer is not supplied, the return
1493 value will be the best available description of the error code that can be represented as a static
1494 string. This allows code that cannot use a temporary buffer to hold the result to still get a useful
1495 error string in most cases, but also allows code that can use a temporary buffer to get the best
1496 available description.
1497 */
1498
1499 #if ( DEBUG )
1500 DEBUG_EXPORT const char * DebugGetErrorString( int_least32_t inErrorCode, char *inBuffer, size_t inBufferSize );
1501 #endif
1502
1503 //---------------------------------------------------------------------------------------------------------------------------
1504 /*! @function DebugHexDump
1505
1506 @abstract Hex dumps data to a string or to the output device.
1507 */
1508
1509 #if ( DEBUG )
1510 DEBUG_EXPORT size_t
1511 DebugHexDump(
1512 DebugLevel inLevel,
1513 int inIndent,
1514 const char * inLabel,
1515 size_t inLabelSize,
1516 int inLabelMinWidth,
1517 const char * inType,
1518 size_t inTypeSize,
1519 const void * inDataStart,
1520 const void * inData,
1521 size_t inDataSize,
1522 DebugFlags inFlags,
1523 char * outBuffer,
1524 size_t inBufferSize );
1525 #endif
1526
1527 #if ( DEBUG )
1528 #define dloghex( LEVEL, INDENT, LABEL, LABEL_SIZE, LABEL_MIN_SIZE, TYPE, TYPE_SIZE, DATA_START, DATA, DATA_SIZE, FLAGS, BUFFER, BUFFER_SIZE ) \
1529 DebugHexDump( ( LEVEL ), (INDENT), ( LABEL ), ( LABEL_SIZE ), ( LABEL_MIN_SIZE ), ( TYPE ), ( TYPE_SIZE ), \
1530 ( DATA_START ), ( DATA ), ( DATA_SIZE ), ( FLAGS ), ( BUFFER ), ( BUFFER_SIZE ) )
1531 #else
1532 #define dloghex( LEVEL, INDENT, LABEL, LABEL_SIZE, LABEL_MIN_SIZE, TYPE, TYPE_SIZE, DATA_START, DATA, DATA_SIZE, FLAGS, BUFFER, BUFFER_SIZE )
1533 #endif
1534
1535 //---------------------------------------------------------------------------------------------------------------------------
1536 /*! @function DebugTaskLevel
1537
1538 @abstract Returns the current task level.
1539
1540 @result Current task level
1541
1542 @discussion
1543
1544 Bit masks to isolate portions of the result (note that some masks may also need bit shifts to right justify):
1545 <pre>
1546 kDebugInterruptLevelMask - Indicates the current interrupt level (> 0 means interrupt time).
1547 kDebugInVBLTaskMask - Indicates if a VBL task is currently being executed.
1548 kDebugInDeferredTaskMask - Indicates if a Deferred Task is currently being executed.
1549 kDebugInSecondaryInterruptHandlerMask - Indicates if a Secondary Interrupt Handler is currently being executed.
1550 kDebugPageFaultFatalMask - Indicates if it is unsafe to cause a page fault (worse than interrupt time).
1551 kDebugMPTaskLevelMask - Indicates if being called from an MP task.
1552 kDebugInterruptDepthMask - 0 means task level, 1 means in interrupt, > 1 means in nested interrupt.
1553 </pre>
1554
1555 Helpers:
1556 <pre>
1557 DebugExtractTaskLevelInterruptDepth() - Macro to extract interrupt depth from task level value.
1558 </pre>
1559 */
1560
1561 #if ( DEBUG )
1562 DEBUG_EXPORT uint32_t DebugTaskLevel( void );
1563 #endif
1564
1565 //---------------------------------------------------------------------------------------------------------------------------
1566 /*! @function DebugServicesTest
1567
1568 @abstract Unit test.
1569 */
1570
1571 #if ( DEBUG )
1572 DEBUG_EXPORT OSStatus DebugServicesTest( void );
1573 #endif
1574
1575 #ifdef __cplusplus
1576 }
1577 #endif
1578
1579 #endif // __DEBUG_SERVICES__
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