cdefs.h@ 33692

Last change on this file since 33692 was 33692, checked in by vboxsync, 14 years ago
iprt/cdefs.h: Added RT_FROM_CPP_MEMBER for shutting up mr noisy (g++).
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1	/** @file
2	* IPRT - Common C and C++ definitions.
3	*/
4
5	/*
6	* Copyright (C) 2006-2010 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*/
25
26	#ifndef ___iprt_cdefs_h
27	#define ___iprt_cdefs_h
28
29
30	/** @defgroup grp_rt_cdefs IPRT Common Definitions and Macros
31	* @{
32	*/
33
34	/*
35	* Include sys/cdefs.h if present, if not define the stuff we need.
36	*/
37	#ifdef HAVE_SYS_CDEFS_H
38	# if defined(RT_ARCH_LINUX) && defined(__KERNEL__)
39	# error "oops"
40	# endif
41	# include <sys/cdefs.h>
42	#else
43
44	/** @def RT_C_DECLS_BEGIN
45	* Used to start a block of function declarations which are shared
46	* between C and C++ program.
47	*/
48
49	/** @def RT_C_DECLS_END
50	* Used to end a block of function declarations which are shared
51	* between C and C++ program.
52	*/
53
54	# if defined(__cplusplus)
55	# define RT_C_DECLS_BEGIN extern "C" {
56	# define RT_C_DECLS_END }
57	# else
58	# define RT_C_DECLS_BEGIN
59	# define RT_C_DECLS_END
60	# endif
61
62	#endif
63
64
65	/*
66	* Shut up DOXYGEN warnings and guide it properly thru the code.
67	*/
68	#ifdef DOXYGEN_RUNNING
69	#define __AMD64__
70	#define __X86__
71	#define RT_ARCH_AMD64
72	#define RT_ARCH_X86
73	#define IN_RING0
74	#define IN_RING3
75	#define IN_RC
76	#define IN_RC
77	#define IN_RT_RC
78	#define IN_RT_R0
79	#define IN_RT_R3
80	#define IN_RT_STATIC
81	#define RT_STRICT
82	#define RT_LOCK_STRICT
83	#define RT_LOCK_NO_STRICT
84	#define RT_LOCK_STRICT_ORDER
85	#define RT_LOCK_NO_STRICT_ORDER
86	#define Breakpoint
87	#define RT_NO_DEPRECATED_MACROS
88	#define RT_EXCEPTIONS_ENABLED
89	#define RT_BIG_ENDIAN
90	#define RT_LITTLE_ENDIAN
91	#endif /* DOXYGEN_RUNNING */
92
93	/** @def RT_ARCH_X86
94	* Indicates that we're compiling for the X86 architecture.
95	*/
96
97	/** @def RT_ARCH_AMD64
98	* Indicates that we're compiling for the AMD64 architecture.
99	*/
100
101	/** @def RT_ARCH_SPARC
102	* Indicates that we're compiling for the SPARC V8 architecture (32-bit).
103	*/
104
105	/** @def RT_ARCH_SPARC64
106	* Indicates that we're compiling for the SPARC V9 architecture (64-bit).
107	*/
108	#if !defined(RT_ARCH_X86) && !defined(RT_ARCH_AMD64) && !defined(RT_ARCH_SPARC) && !defined(RT_ARCH_SPARC64)
109	# if defined(__amd64__) \|\| defined(__x86_64__) \|\| defined(_M_X64) \|\| defined(__AMD64__)
110	# define RT_ARCH_AMD64
111	# elif defined(__i386__) \|\| defined(_M_IX86) \|\| defined(__X86__)
112	# define RT_ARCH_X86
113	# elif defined(__sparcv9)
114	# define RT_ARCH_SPARC64
115	# elif defined(__sparc__)
116	# define RT_ARCH_SPARC
117	# else /* PORTME: append test for new archs. */
118	# error "Check what predefined macros your compiler uses to indicate architecture."
119	# endif
120	/* PORTME: append new archs checks. */
121	#elif defined(RT_ARCH_X86) && defined(RT_ARCH_AMD64)
122	# error "Both RT_ARCH_X86 and RT_ARCH_AMD64 cannot be defined at the same time!"
123	#elif defined(RT_ARCH_X86) && defined(RT_ARCH_SPARC)
124	# error "Both RT_ARCH_X86 and RT_ARCH_SPARC cannot be defined at the same time!"
125	#elif defined(RT_ARCH_X86) && defined(RT_ARCH_SPARC64)
126	# error "Both RT_ARCH_X86 and RT_ARCH_SPARC64 cannot be defined at the same time!"
127	#elif defined(RT_ARCH_AMD64) && defined(RT_ARCH_SPARC)
128	# error "Both RT_ARCH_AMD64 and RT_ARCH_SPARC cannot be defined at the same time!"
129	#elif defined(RT_ARCH_AMD64) && defined(RT_ARCH_SPARC64)
130	# error "Both RT_ARCH_AMD64 and RT_ARCH_SPARC64 cannot be defined at the same time!"
131	#elif defined(RT_ARCH_SPARC) && defined(RT_ARCH_SPARC64)
132	# error "Both RT_ARCH_SPARC and RT_ARCH_SPARC64 cannot be defined at the same time!"
133	#endif
134
135
136	/** @def __X86__
137	* Indicates that we're compiling for the X86 architecture.
138	* @deprecated
139	*/
140
141	/** @def __AMD64__
142	* Indicates that we're compiling for the AMD64 architecture.
143	* @deprecated
144	*/
145	#if !defined(__X86__) && !defined(__AMD64__) && !defined(RT_ARCH_SPARC) && !defined(RT_ARCH_SPARC64)
146	# if defined(RT_ARCH_AMD64)
147	# define __AMD64__
148	# elif defined(RT_ARCH_X86)
149	# define __X86__
150	# else
151	# error "Check what predefined macros your compiler uses to indicate architecture."
152	# endif
153	#elif defined(__X86__) && defined(__AMD64__)
154	# error "Both __X86__ and __AMD64__ cannot be defined at the same time!"
155	#elif defined(__X86__) && !defined(RT_ARCH_X86)
156	# error "Both __X86__ without RT_ARCH_X86!"
157	#elif defined(__AMD64__) && !defined(RT_ARCH_AMD64)
158	# error "Both __AMD64__ without RT_ARCH_AMD64!"
159	#endif
160
161	/** @def RT_BIG_ENDIAN
162	* Defined if the architecture is big endian. */
163	/** @def RT_LITTLE_ENDIAN
164	* Defined if the architecture is little endian. */
165	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
166	# define RT_LITTLE_ENDIAN
167	#elif defined(RT_ARCH_SPARC) \|\| defined(RT_ARCH_SPARC64)
168	# define RT_BIG_ENDIAN
169	#else
170	# error "PORTME: architecture endianess"
171	#endif
172	#if defined(RT_BIG_ENDIAN) && defined(RT_LITTLE_ENDIAN)
173	# error "Both RT_BIG_ENDIAN and RT_LITTLE_ENDIAN are defined"
174	#endif
175
176
177	/** @def IN_RING0
178	* Used to indicate that we're compiling code which is running
179	* in Ring-0 Host Context.
180	*/
181
182	/** @def IN_RING3
183	* Used to indicate that we're compiling code which is running
184	* in Ring-3 Host Context.
185	*/
186
187	/** @def IN_RC
188	* Used to indicate that we're compiling code which is running
189	* in the Raw-mode Context (implies R0).
190	*/
191	#if !defined(IN_RING3) && !defined(IN_RING0) && !defined(IN_RC) && !defined(IN_RC)
192	# error "You must define which context the compiled code should run in; IN_RING3, IN_RING0 or IN_RC"
193	#endif
194	#if (defined(IN_RING3) && (defined(IN_RING0) \|\| defined(IN_RC)) ) \
195	\|\| (defined(IN_RING0) && (defined(IN_RING3) \|\| defined(IN_RC)) ) \
196	\|\| (defined(IN_RC) && (defined(IN_RING3) \|\| defined(IN_RING0)) )
197	# error "Only one of the IN_RING3, IN_RING0, IN_RC defines should be defined."
198	#endif
199
200
201	/** @def ARCH_BITS
202	* Defines the bit count of the current context.
203	*/
204	#if !defined(ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
205	# if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_SPARC64)
206	# define ARCH_BITS 64
207	# else
208	# define ARCH_BITS 32
209	# endif
210	#endif
211
212	/** @def HC_ARCH_BITS
213	* Defines the host architecture bit count.
214	*/
215	#if !defined(HC_ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
216	# ifndef IN_RC
217	# define HC_ARCH_BITS ARCH_BITS
218	# else
219	# define HC_ARCH_BITS 32
220	# endif
221	#endif
222
223	/** @def GC_ARCH_BITS
224	* Defines the guest architecture bit count.
225	*/
226	#if !defined(GC_ARCH_BITS) && !defined(DOXYGEN_RUNNING)
227	# ifdef VBOX_WITH_64_BITS_GUESTS
228	# define GC_ARCH_BITS 64
229	# else
230	# define GC_ARCH_BITS 32
231	# endif
232	#endif
233
234	/** @def R3_ARCH_BITS
235	* Defines the host ring-3 architecture bit count.
236	*/
237	#if !defined(R3_ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
238	# ifdef IN_RING3
239	# define R3_ARCH_BITS ARCH_BITS
240	# else
241	# define R3_ARCH_BITS HC_ARCH_BITS
242	# endif
243	#endif
244
245	/** @def R0_ARCH_BITS
246	* Defines the host ring-0 architecture bit count.
247	*/
248	#if !defined(R0_ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
249	# ifdef IN_RING0
250	# define R0_ARCH_BITS ARCH_BITS
251	# else
252	# define R0_ARCH_BITS HC_ARCH_BITS
253	# endif
254	#endif
255
256	/** @def GC_ARCH_BITS
257	* Defines the guest architecture bit count.
258	*/
259	#if !defined(GC_ARCH_BITS) \|\| defined(DOXYGEN_RUNNING)
260	# ifdef IN_RC
261	# define GC_ARCH_BITS ARCH_BITS
262	# else
263	# define GC_ARCH_BITS 32
264	# endif
265	#endif
266
267
268	/** @def CTXTYPE
269	* Declare a type differently in GC, R3 and R0.
270	*
271	* @param GCType The GC type.
272	* @param R3Type The R3 type.
273	* @param R0Type The R0 type.
274	* @remark For pointers used only in one context use RCPTRTYPE(), R3R0PTRTYPE(), R3PTRTYPE() or R0PTRTYPE().
275	*/
276	#ifdef IN_RC
277	# define CTXTYPE(GCType, R3Type, R0Type) GCType
278	#elif defined(IN_RING3)
279	# define CTXTYPE(GCType, R3Type, R0Type) R3Type
280	#else
281	# define CTXTYPE(GCType, R3Type, R0Type) R0Type
282	#endif
283
284	/** @def RCPTRTYPE
285	* Declare a pointer which is used in the raw mode context but appears in structure(s) used by
286	* both HC and RC. The main purpose is to make sure structures have the same
287	* size when built for different architectures.
288	*
289	* @param RCType The RC type.
290	*/
291	#define RCPTRTYPE(RCType) CTXTYPE(RCType, RTRCPTR, RTRCPTR)
292
293	/** @def R3R0PTRTYPE
294	* Declare a pointer which is used in HC, is explicitly valid in ring 3 and 0,
295	* but appears in structure(s) used by both HC and GC. The main purpose is to
296	* make sure structures have the same size when built for different architectures.
297	*
298	* @param R3R0Type The R3R0 type.
299	* @remarks This used to be called HCPTRTYPE.
300	*/
301	#define R3R0PTRTYPE(R3R0Type) CTXTYPE(RTHCPTR, R3R0Type, R3R0Type)
302
303	/** @def R3PTRTYPE
304	* Declare a pointer which is used in R3 but appears in structure(s) used by
305	* both HC and GC. The main purpose is to make sure structures have the same
306	* size when built for different architectures.
307	*
308	* @param R3Type The R3 type.
309	*/
310	#define R3PTRTYPE(R3Type) CTXTYPE(RTHCUINTPTR, R3Type, RTHCUINTPTR)
311
312	/** @def R0PTRTYPE
313	* Declare a pointer which is used in R0 but appears in structure(s) used by
314	* both HC and GC. The main purpose is to make sure structures have the same
315	* size when built for different architectures.
316	*
317	* @param R0Type The R0 type.
318	*/
319	#define R0PTRTYPE(R0Type) CTXTYPE(RTHCUINTPTR, RTHCUINTPTR, R0Type)
320
321	/** @def CTXSUFF
322	* Adds the suffix of the current context to the passed in
323	* identifier name. The suffix is HC or GC.
324	*
325	* This is macro should only be used in shared code to avoid a forest of ifdefs.
326	* @param var Identifier name.
327	* @deprecated Use CTX_SUFF. Do NOT use this for new code.
328	*/
329	/** @def OTHERCTXSUFF
330	* Adds the suffix of the other context to the passed in
331	* identifier name. The suffix is HC or GC.
332	*
333	* This is macro should only be used in shared code to avoid a forest of ifdefs.
334	* @param var Identifier name.
335	* @deprecated Use CTX_SUFF. Do NOT use this for new code.
336	*/
337	#ifdef IN_RC
338	# define CTXSUFF(var) var##GC
339	# define OTHERCTXSUFF(var) var##HC
340	#else
341	# define CTXSUFF(var) var##HC
342	# define OTHERCTXSUFF(var) var##GC
343	#endif
344
345	/** @def CTXALLSUFF
346	* Adds the suffix of the current context to the passed in
347	* identifier name. The suffix is R3, R0 or GC.
348	*
349	* This is macro should only be used in shared code to avoid a forest of ifdefs.
350	* @param var Identifier name.
351	* @deprecated Use CTX_SUFF. Do NOT use this for new code.
352	*/
353	#ifdef IN_RC
354	# define CTXALLSUFF(var) var##GC
355	#elif defined(IN_RING0)
356	# define CTXALLSUFF(var) var##R0
357	#else
358	# define CTXALLSUFF(var) var##R3
359	#endif
360
361	/** @def CTX_SUFF
362	* Adds the suffix of the current context to the passed in
363	* identifier name. The suffix is R3, R0 or RC.
364	*
365	* This is macro should only be used in shared code to avoid a forest of ifdefs.
366	* @param var Identifier name.
367	*
368	* @remark This will replace CTXALLSUFF and CTXSUFF before long.
369	*/
370	#ifdef IN_RC
371	# define CTX_SUFF(var) var##RC
372	#elif defined(IN_RING0)
373	# define CTX_SUFF(var) var##R0
374	#else
375	# define CTX_SUFF(var) var##R3
376	#endif
377
378	/** @def CTX_SUFF_Z
379	* Adds the suffix of the current context to the passed in
380	* identifier name, combining RC and R0 into RZ.
381	* The suffix thus is R3 or RZ.
382	*
383	* This is macro should only be used in shared code to avoid a forest of ifdefs.
384	* @param var Identifier name.
385	*
386	* @remark This will replace CTXALLSUFF and CTXSUFF before long.
387	*/
388	#ifdef IN_RING3
389	# define CTX_SUFF_Z(var) var##R3
390	#else
391	# define CTX_SUFF_Z(var) var##RZ
392	#endif
393
394
395	/** @def CTXMID
396	* Adds the current context as a middle name of an identifier name
397	* The middle name is HC or GC.
398	*
399	* This is macro should only be used in shared code to avoid a forest of ifdefs.
400	* @param first First name.
401	* @param last Surname.
402	*/
403	/** @def OTHERCTXMID
404	* Adds the other context as a middle name of an identifier name
405	* The middle name is HC or GC.
406	*
407	* This is macro should only be used in shared code to avoid a forest of ifdefs.
408	* @param first First name.
409	* @param last Surname.
410	* @deprecated use CTX_MID or CTX_MID_Z
411	*/
412	#ifdef IN_RC
413	# define CTXMID(first, last) first##GC##last
414	# define OTHERCTXMID(first, last) first##HC##last
415	#else
416	# define CTXMID(first, last) first##HC##last
417	# define OTHERCTXMID(first, last) first##GC##last
418	#endif
419
420	/** @def CTXALLMID
421	* Adds the current context as a middle name of an identifier name.
422	* The middle name is R3, R0 or GC.
423	*
424	* This is macro should only be used in shared code to avoid a forest of ifdefs.
425	* @param first First name.
426	* @param last Surname.
427	* @deprecated use CTX_MID or CTX_MID_Z
428	*/
429	#ifdef IN_RC
430	# define CTXALLMID(first, last) first##GC##last
431	#elif defined(IN_RING0)
432	# define CTXALLMID(first, last) first##R0##last
433	#else
434	# define CTXALLMID(first, last) first##R3##last
435	#endif
436
437	/** @def CTX_MID
438	* Adds the current context as a middle name of an identifier name.
439	* The middle name is R3, R0 or RC.
440	*
441	* This is macro should only be used in shared code to avoid a forest of ifdefs.
442	* @param first First name.
443	* @param last Surname.
444	*/
445	#ifdef IN_RC
446	# define CTX_MID(first, last) first##RC##last
447	#elif defined(IN_RING0)
448	# define CTX_MID(first, last) first##R0##last
449	#else
450	# define CTX_MID(first, last) first##R3##last
451	#endif
452
453	/** @def CTX_MID_Z
454	* Adds the current context as a middle name of an identifier name, combining RC
455	* and R0 into RZ.
456	* The middle name thus is either R3 or RZ.
457	*
458	* This is macro should only be used in shared code to avoid a forest of ifdefs.
459	* @param first First name.
460	* @param last Surname.
461	*/
462	#ifdef IN_RING3
463	# define CTX_MID_Z(first, last) first##R3##last
464	#else
465	# define CTX_MID_Z(first, last) first##RZ##last
466	#endif
467
468
469	/** @def R3STRING
470	* A macro which in GC and R0 will return a dummy string while in R3 it will return
471	* the parameter.
472	*
473	* This is typically used to wrap description strings in structures shared
474	* between R3, R0 and/or GC. The intention is to avoid the \#ifdef IN_RING3 mess.
475	*
476	* @param pR3String The R3 string. Only referenced in R3.
477	* @see R0STRING and GCSTRING
478	*/
479	#ifdef IN_RING3
480	# define R3STRING(pR3String) (pR3String)
481	#else
482	# define R3STRING(pR3String) ("<R3_STRING>")
483	#endif
484
485	/** @def R0STRING
486	* A macro which in GC and R3 will return a dummy string while in R0 it will return
487	* the parameter.
488	*
489	* This is typically used to wrap description strings in structures shared
490	* between R3, R0 and/or GC. The intention is to avoid the \#ifdef IN_RING0 mess.
491	*
492	* @param pR0String The R0 string. Only referenced in R0.
493	* @see R3STRING and GCSTRING
494	*/
495	#ifdef IN_RING0
496	# define R0STRING(pR0String) (pR0String)
497	#else
498	# define R0STRING(pR0String) ("<R0_STRING>")
499	#endif
500
501	/** @def RCSTRING
502	* A macro which in R3 and R0 will return a dummy string while in RC it will return
503	* the parameter.
504	*
505	* This is typically used to wrap description strings in structures shared
506	* between R3, R0 and/or RC. The intention is to avoid the \#ifdef IN_RC mess.
507	*
508	* @param pRCString The RC string. Only referenced in RC.
509	* @see R3STRING, R0STRING
510	*/
511	#ifdef IN_RC
512	# define RCSTRING(pRCString) (pRCString)
513	#else
514	# define RCSTRING(pRCString) ("<RC_STRING>")
515	#endif
516
517
518	/** @def RT_NOTHING
519	* A macro that expands to nothing.
520	* This is primarily intended as a dummy argument for macros to avoid the
521	* undefined behavior passing empty arguments to an macro (ISO C90 and C++98,
522	* gcc v4.4 warns about it).
523	*/
524	#define RT_NOTHING
525
526	/** @def RT_EXCEPTIONS_ENABLED
527	* Defined when C++ exceptions are enabled.
528	*/
529	#if !defined(RT_EXCEPTIONS_ENABLED) \
530	&& defined(__cplusplus) \
531	&& ( (defined(_MSC_VER) && defined(_CPPUNWIND)) \
532	\|\| (defined(__GNUC__) && defined(__EXCEPTIONS)))
533	# define RT_EXCEPTIONS_ENABLED
534	#endif
535
536	/** @def RT_NO_THROW
537	* How to express that a function doesn't throw C++ exceptions
538	* and the compiler can thus save itself the bother of trying
539	* to catch any of them. Put this between the closing parenthesis
540	* and the semicolon in function prototypes (and implementation if C++).
541	*/
542	#ifdef RT_EXCEPTIONS_ENABLED
543	# define RT_NO_THROW throw()
544	#else
545	# define RT_NO_THROW
546	#endif
547
548	/** @def RT_THROW
549	* How to express that a method or function throws a type of exceptions. Some
550	* compilers does not want this kind of information and will warning about it.
551	*
552	* @param type The type exception.
553	*
554	* @remarks If the actual throwing is done from the header, enclose it by
555	* \#ifdef RT_EXCEPTIONS_ENABLED ... \#else ... \#endif so the header
556	* compiles cleanly without exceptions enabled.
557	*
558	* Do NOT use this for the actual throwing of exceptions!
559	*/
560	#ifdef RT_EXCEPTIONS_ENABLED
561	# ifdef _MSC_VER
562	# if _MSC_VER >= 1400
563	# define RT_THROW(type)
564	# else
565	# define RT_THROW(type) throw(type)
566	# endif
567	# else
568	# define RT_THROW(type) throw(type)
569	# endif
570	#else
571	# define RT_THROW(type)
572	#endif
573
574	/** @def RTCALL
575	* The standard calling convention for the Runtime interfaces.
576	*/
577	#ifdef _MSC_VER
578	# define RTCALL __cdecl
579	#elif defined(RT_OS_OS2)
580	# define RTCALL __cdecl
581	#elif defined(__GNUC__) && defined(IN_RING0) \
582	&& !(defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_SPARC) \|\| defined(RT_ARCH_SPARC64)) /* the latter is kernel/gcc */
583	# define RTCALL __attribute__((cdecl,regparm(0)))
584	#else
585	# define RTCALL
586	#endif
587
588	/** @def DECLEXPORT
589	* How to declare an exported function.
590	* @param type The return type of the function declaration.
591	*/
592	#if defined(_MSC_VER) \|\| defined(RT_OS_OS2)
593	# define DECLEXPORT(type) __declspec(dllexport) type
594	#elif defined(RT_USE_VISIBILITY_DEFAULT)
595	# define DECLEXPORT(type) __attribute__((visibility("default"))) type
596	#else
597	# define DECLEXPORT(type) type
598	#endif
599
600	/** @def DECLIMPORT
601	* How to declare an imported function.
602	* @param type The return type of the function declaration.
603	*/
604	#if defined(_MSC_VER) \|\| (defined(RT_OS_OS2) && !defined(__IBMC__) && !defined(__IBMCPP__))
605	# define DECLIMPORT(type) __declspec(dllimport) type
606	#else
607	# define DECLIMPORT(type) type
608	#endif
609
610	/** @def DECLHIDDEN
611	* How to declare a non-exported function or variable.
612	* @param type The return type of the function or the data type of the variable.
613	*/
614	#if defined(RT_OS_OS2) \|\| defined(RT_OS_WINDOWS) \|\| !defined(RT_USE_VISIBILITY_HIDDEN) \|\| defined(DOXYGEN_RUNNING)
615	# define DECLHIDDEN(type) type
616	#else
617	# define DECLHIDDEN(type) __attribute__((visibility("hidden"))) type
618	#endif
619
620	/** @def DECL_INVALID
621	* How to declare a function not available for linking in the current context.
622	* The purpose is to create compile or like time errors when used. This isn't
623	* possible on all platforms.
624	* @param type The return type of the function.
625	*/
626	#if defined(_MSC_VER)
627	# define DECL_INVALID(type) __declspec(dllimport) type __stdcall
628	#elif defined(__GNUC__) && defined(__cplusplus)
629	# define DECL_INVALID(type) extern "C++" type
630	#else
631	# define DECL_INVALID(type) type
632	#endif
633
634	/** @def DECLASM
635	* How to declare an internal assembly function.
636	* @param type The return type of the function declaration.
637	*/
638	#ifdef __cplusplus
639	# ifdef _MSC_VER
640	# define DECLASM(type) extern "C" type __cdecl
641	# else
642	# define DECLASM(type) extern "C" type
643	# endif
644	#else
645	# ifdef _MSC_VER
646	# define DECLASM(type) type __cdecl
647	# else
648	# define DECLASM(type) type
649	# endif
650	#endif
651
652	/** @def DECLASMTYPE
653	* How to declare an internal assembly function type.
654	* @param type The return type of the function.
655	*/
656	#ifdef _MSC_VER
657	# define DECLASMTYPE(type) type __cdecl
658	#else
659	# define DECLASMTYPE(type) type
660	#endif
661
662	/** @def DECLNORETURN
663	* How to declare a function which does not return.
664	* @note: This macro can be combined with other macros, for example
665	* @code
666	* EMR3DECL(DECLNORETURN(void)) foo(void);
667	* @endcode
668	*/
669	#ifdef _MSC_VER
670	# define DECLNORETURN(type) __declspec(noreturn) type
671	#elif defined(__GNUC__)
672	# define DECLNORETURN(type) __attribute__((noreturn)) type
673	#else
674	# define DECLNORETURN(type) type
675	#endif
676
677	/** @def DECLCALLBACK
678	* How to declare an call back function type.
679	* @param type The return type of the function declaration.
680	*/
681	#define DECLCALLBACK(type) type RTCALL
682
683	/** @def DECLCALLBACKPTR
684	* How to declare an call back function pointer.
685	* @param type The return type of the function declaration.
686	* @param name The name of the variable member.
687	*/
688	#define DECLCALLBACKPTR(type, name) type (RTCALL * name)
689
690	/** @def DECLCALLBACKMEMBER
691	* How to declare an call back function pointer member.
692	* @param type The return type of the function declaration.
693	* @param name The name of the struct/union/class member.
694	*/
695	#define DECLCALLBACKMEMBER(type, name) type (RTCALL * name)
696
697	/** @def DECLR3CALLBACKMEMBER
698	* How to declare an call back function pointer member - R3 Ptr.
699	* @param type The return type of the function declaration.
700	* @param name The name of the struct/union/class member.
701	* @param args The argument list enclosed in parentheses.
702	*/
703	#ifdef IN_RING3
704	# define DECLR3CALLBACKMEMBER(type, name, args) type (RTCALL * name) args
705	#else
706	# define DECLR3CALLBACKMEMBER(type, name, args) RTR3PTR name
707	#endif
708
709	/** @def DECLRCCALLBACKMEMBER
710	* How to declare an call back function pointer member - RC Ptr.
711	* @param type The return type of the function declaration.
712	* @param name The name of the struct/union/class member.
713	* @param args The argument list enclosed in parentheses.
714	*/
715	#ifdef IN_RC
716	# define DECLRCCALLBACKMEMBER(type, name, args) type (RTCALL * name) args
717	#else
718	# define DECLRCCALLBACKMEMBER(type, name, args) RTRCPTR name
719	#endif
720
721	/** @def DECLR0CALLBACKMEMBER
722	* How to declare an call back function pointer member - R0 Ptr.
723	* @param type The return type of the function declaration.
724	* @param name The name of the struct/union/class member.
725	* @param args The argument list enclosed in parentheses.
726	*/
727	#ifdef IN_RING0
728	# define DECLR0CALLBACKMEMBER(type, name, args) type (RTCALL * name) args
729	#else
730	# define DECLR0CALLBACKMEMBER(type, name, args) RTR0PTR name
731	#endif
732
733	/** @def DECLINLINE
734	* How to declare a function as inline.
735	* @param type The return type of the function declaration.
736	* @remarks Don't use this macro on C++ methods.
737	*/
738	#ifdef __GNUC__
739	# define DECLINLINE(type) static __inline__ type
740	#elif defined(__cplusplus)
741	# define DECLINLINE(type) inline type
742	#elif defined(_MSC_VER)
743	# define DECLINLINE(type) _inline type
744	#elif defined(__IBMC__)
745	# define DECLINLINE(type) _Inline type
746	#else
747	# define DECLINLINE(type) inline type
748	#endif
749
750
751	/** @def DECL_FORCE_INLINE
752	* How to declare a function as inline and try convince the compiler to always
753	* inline it regardless of optimization switches.
754	* @param type The return type of the function declaration.
755	* @remarks Use sparsely and with care. Don't use this macro on C++ methods.
756	*/
757	#ifdef __GNUC__
758	# define DECL_FORCE_INLINE(type) __attribute__((always_inline)) DECLINLINE(type)
759	#elif defined(_MSC_VER)
760	# define DECL_FORCE_INLINE(type) __forceinline type
761	#else
762	# define DECL_FORCE_INLINE(type) DECLINLINE(type)
763	#endif
764
765
766	/** @def DECL_NO_INLINE
767	* How to declare a function telling the compiler not to inline it.
768	* @param scope The function scope, static or RT_NOTHING.
769	* @param type The return type of the function declaration.
770	* @remarks Don't use this macro on C++ methods.
771	*/
772	#ifdef __GNUC__
773	# define DECL_NO_INLINE(scope,type) __attribute__((noinline)) scope type
774	#elif defined(_MSC_VER)
775	# define DECL_NO_INLINE(scope,type) __declspec(noline) scope type
776	#else
777	# define DECL_NO_INLINE(scope,type) scope type
778	#endif
779
780
781	/** @def IN_RT_STATIC
782	* Used to indicate whether we're linking against a static IPRT
783	* or not. The IPRT symbols will be declared as hidden (if
784	* supported). Note that this define has no effect without setting
785	* IN_RT_R0, IN_RT_R3 or IN_RT_RC indicators are set first.
786	*/
787
788	/** @def IN_RT_R0
789	* Used to indicate whether we're inside the same link module as
790	* the HC Ring-0 Runtime Library.
791	*/
792	/** @def RTR0DECL(type)
793	* Runtime Library HC Ring-0 export or import declaration.
794	* @param type The return type of the function declaration.
795	*/
796	#ifdef IN_RT_R0
797	# ifdef IN_RT_STATIC
798	# define RTR0DECL(type) DECLHIDDEN(type) RTCALL
799	# else
800	# define RTR0DECL(type) DECLEXPORT(type) RTCALL
801	# endif
802	#else
803	# define RTR0DECL(type) DECLIMPORT(type) RTCALL
804	#endif
805
806	/** @def IN_RT_R3
807	* Used to indicate whether we're inside the same link module as
808	* the HC Ring-3 Runtime Library.
809	*/
810	/** @def RTR3DECL(type)
811	* Runtime Library HC Ring-3 export or import declaration.
812	* @param type The return type of the function declaration.
813	*/
814	#ifdef IN_RT_R3
815	# ifdef IN_RT_STATIC
816	# define RTR3DECL(type) DECLHIDDEN(type) RTCALL
817	# else
818	# define RTR3DECL(type) DECLEXPORT(type) RTCALL
819	# endif
820	#else
821	# define RTR3DECL(type) DECLIMPORT(type) RTCALL
822	#endif
823
824	/** @def IN_RT_RC
825	* Used to indicate whether we're inside the same link module as the raw-mode
826	* context (RC) runtime library.
827	*/
828	/** @def RTRCDECL(type)
829	* Runtime Library raw-mode context export or import declaration.
830	* @param type The return type of the function declaration.
831	*/
832	#ifdef IN_RT_RC
833	# ifdef IN_RT_STATIC
834	# define RTRCDECL(type) DECLHIDDEN(type) RTCALL
835	# else
836	# define RTRCDECL(type) DECLEXPORT(type) RTCALL
837	# endif
838	#else
839	# define RTRCDECL(type) DECLIMPORT(type) RTCALL
840	#endif
841
842	/** @def RTDECL(type)
843	* Runtime Library export or import declaration.
844	* Functions declared using this macro exists in all contexts.
845	* @param type The return type of the function declaration.
846	*/
847	#if defined(IN_RT_R3) \|\| defined(IN_RT_RC) \|\| defined(IN_RT_R0)
848	# ifdef IN_RT_STATIC
849	# define RTDECL(type) DECLHIDDEN(type) RTCALL
850	# else
851	# define RTDECL(type) DECLEXPORT(type) RTCALL
852	# endif
853	#else
854	# define RTDECL(type) DECLIMPORT(type) RTCALL
855	#endif
856
857	/** @def RTDATADECL(type)
858	* Runtime Library export or import declaration.
859	* Data declared using this macro exists in all contexts.
860	* @param type The return type of the function declaration.
861	*/
862	#if defined(IN_RT_R3) \|\| defined(IN_RT_RC) \|\| defined(IN_RT_R0)
863	# ifdef IN_RT_STATIC
864	# define RTDATADECL(type) DECLHIDDEN(type)
865	# else
866	# define RTDATADECL(type) DECLEXPORT(type)
867	# endif
868	#else
869	# define RTDATADECL(type) DECLIMPORT(type)
870	#endif
871
872	/** @def RT_DECL_CLASS
873	* Declares an class living in the runtime.
874	*/
875	#if defined(IN_RT_R3) \|\| defined(IN_RT_RC) \|\| defined(IN_RT_R0)
876	# ifdef IN_RT_STATIC
877	# define RT_DECL_CLASS
878	# else
879	# define RT_DECL_CLASS DECLEXPORT_CLASS
880	# endif
881	#else
882	# define RT_DECL_CLASS DECLIMPORT_CLASS
883	#endif
884
885
886	/** @def RT_NOCRT
887	* Symbol name wrapper for the No-CRT bits.
888	*
889	* In order to coexist in the same process as other CRTs, we need to
890	* decorate the symbols such that they don't conflict the ones in the
891	* other CRTs. The result of such conflicts / duplicate symbols can
892	* confuse the dynamic loader on Unix like systems.
893	*
894	* Define RT_WITHOUT_NOCRT_WRAPPERS to drop the wrapping.
895	* Define RT_WITHOUT_NOCRT_WRAPPER_ALIASES to drop the aliases to the
896	* wrapped names.
897	*/
898	/** @def RT_NOCRT_STR
899	* Same as RT_NOCRT only it'll return a double quoted string of the result.
900	*/
901	#ifndef RT_WITHOUT_NOCRT_WRAPPERS
902	# define RT_NOCRT(name) nocrt_ ## name
903	# define RT_NOCRT_STR(name) "nocrt_" # name
904	#else
905	# define RT_NOCRT(name) name
906	# define RT_NOCRT_STR(name) #name
907	#endif
908
909
910
911	/** @def RT_LIKELY
912	* Give the compiler a hint that an expression is very likely to hold true.
913	*
914	* Some compilers support explicit branch prediction so that the CPU backend
915	* can hint the processor and also so that code blocks can be reordered such
916	* that the predicted path sees a more linear flow, thus improving cache
917	* behaviour, etc.
918	*
919	* IPRT provides the macros RT_LIKELY() and RT_UNLIKELY() as a way to utilize
920	* this compiler feature when present.
921	*
922	* A few notes about the usage:
923	*
924	* - Generally, use RT_UNLIKELY() with error condition checks (unless you
925	* have some _strong_ reason to do otherwise, in which case document it),
926	* and/or RT_LIKELY() with success condition checks, assuming you want
927	* to optimize for the success path.
928	*
929	* - Other than that, if you don't know the likelihood of a test succeeding
930	* from empirical or other 'hard' evidence, don't make predictions unless
931	* you happen to be a Dirk Gently.
932	*
933	* - These macros are meant to be used in places that get executed a lot. It
934	* is wasteful to make predictions in code that is executed rarely (e.g.
935	* at subsystem initialization time) as the basic block reordering that this
936	* affects can often generate larger code.
937	*
938	* - Note that RT_SUCCESS() and RT_FAILURE() already makes use of RT_LIKELY()
939	* and RT_UNLIKELY(). Should you wish for prediction free status checks,
940	* use the RT_SUCCESS_NP() and RT_FAILURE_NP() macros instead.
941	*
942	*
943	* @returns the boolean result of the expression.
944	* @param expr The expression that's very likely to be true.
945	* @see RT_UNLIKELY
946	*/
947	/** @def RT_UNLIKELY
948	* Give the compiler a hint that an expression is highly unlikely to hold true.
949	*
950	* See the usage instructions give in the RT_LIKELY() docs.
951	*
952	* @returns the boolean result of the expression.
953	* @param expr The expression that's very unlikely to be true.
954	* @see RT_LIKELY
955	*/
956	#if defined(__GNUC__)
957	# if __GNUC__ >= 3 && !defined(FORTIFY_RUNNING)
958	# define RT_LIKELY(expr) __builtin_expect(!!(expr), 1)
959	# define RT_UNLIKELY(expr) __builtin_expect(!!(expr), 0)
960	# else
961	# define RT_LIKELY(expr) (expr)
962	# define RT_UNLIKELY(expr) (expr)
963	# endif
964	#else
965	# define RT_LIKELY(expr) (expr)
966	# define RT_UNLIKELY(expr) (expr)
967	#endif
968
969
970	/** @def RT_STR
971	* Returns the argument as a string constant.
972	* @param str Argument to stringify. */
973	#define RT_STR(str) #str
974	/** @def RT_XSTR
975	* Returns the expanded argument as a string.
976	* @param str Argument to expand and stringy. */
977	#define RT_XSTR(str) RT_STR(str)
978
979
980	/** @def RT_BIT
981	* Convert a bit number into an integer bitmask (unsigned).
982	* @param bit The bit number.
983	*/
984	#define RT_BIT(bit) ( 1U << (bit) )
985
986	/** @def RT_BIT_32
987	* Convert a bit number into a 32-bit bitmask (unsigned).
988	* @param bit The bit number.
989	*/
990	#define RT_BIT_32(bit) ( UINT32_C(1) << (bit) )
991
992	/** @def RT_BIT_64
993	* Convert a bit number into a 64-bit bitmask (unsigned).
994	* @param bit The bit number.
995	*/
996	#define RT_BIT_64(bit) ( UINT64_C(1) << (bit) )
997
998	/** @def RT_ALIGN
999	* Align macro.
1000	* @param u Value to align.
1001	* @param uAlignment The alignment. Power of two!
1002	*
1003	* @remark Be extremely careful when using this macro with type which sizeof != sizeof int.
1004	* When possible use any of the other RT_ALIGN_* macros. And when that's not
1005	* possible, make 101% sure that uAlignment is specified with a right sized type.
1006	*
1007	* Specifying an unsigned 32-bit alignment constant with a 64-bit value will give
1008	* you a 32-bit return value!
1009	*
1010	* In short: Don't use this macro. Use RT_ALIGN_T() instead.
1011	*/
1012	#define RT_ALIGN(u, uAlignment) ( ((u) + ((uAlignment) - 1)) & ~((uAlignment) - 1) )
1013
1014	/** @def RT_ALIGN_T
1015	* Align macro.
1016	* @param u Value to align.
1017	* @param uAlignment The alignment. Power of two!
1018	* @param type Integer type to use while aligning.
1019	* @remark This macro is the preferred alignment macro, it doesn't have any of the pitfalls RT_ALIGN has.
1020	*/
1021	#define RT_ALIGN_T(u, uAlignment, type) ( ((type)(u) + ((uAlignment) - 1)) & ~(type)((uAlignment) - 1) )
1022
1023	/** @def RT_ALIGN_32
1024	* Align macro for a 32-bit value.
1025	* @param u32 Value to align.
1026	* @param uAlignment The alignment. Power of two!
1027	*/
1028	#define RT_ALIGN_32(u32, uAlignment) RT_ALIGN_T(u32, uAlignment, uint32_t)
1029
1030	/** @def RT_ALIGN_64
1031	* Align macro for a 64-bit value.
1032	* @param u64 Value to align.
1033	* @param uAlignment The alignment. Power of two!
1034	*/
1035	#define RT_ALIGN_64(u64, uAlignment) RT_ALIGN_T(u64, uAlignment, uint64_t)
1036
1037	/** @def RT_ALIGN_Z
1038	* Align macro for size_t.
1039	* @param cb Value to align.
1040	* @param uAlignment The alignment. Power of two!
1041	*/
1042	#define RT_ALIGN_Z(cb, uAlignment) RT_ALIGN_T(cb, uAlignment, size_t)
1043
1044	/** @def RT_ALIGN_P
1045	* Align macro for pointers.
1046	* @param pv Value to align.
1047	* @param uAlignment The alignment. Power of two!
1048	*/
1049	#define RT_ALIGN_P(pv, uAlignment) RT_ALIGN_PT(pv, uAlignment, void *)
1050
1051	/** @def RT_ALIGN_PT
1052	* Align macro for pointers with type cast.
1053	* @param u Value to align.
1054	* @param uAlignment The alignment. Power of two!
1055	* @param CastType The type to cast the result to.
1056	*/
1057	#define RT_ALIGN_PT(u, uAlignment, CastType) ( (CastType)RT_ALIGN_T(u, uAlignment, uintptr_t) )
1058
1059	/** @def RT_ALIGN_R3PT
1060	* Align macro for ring-3 pointers with type cast.
1061	* @param u Value to align.
1062	* @param uAlignment The alignment. Power of two!
1063	* @param CastType The type to cast the result to.
1064	*/
1065	#define RT_ALIGN_R3PT(u, uAlignment, CastType) ( (CastType)RT_ALIGN_T(u, uAlignment, RTR3UINTPTR) )
1066
1067	/** @def RT_ALIGN_R0PT
1068	* Align macro for ring-0 pointers with type cast.
1069	* @param u Value to align.
1070	* @param uAlignment The alignment. Power of two!
1071	* @param CastType The type to cast the result to.
1072	*/
1073	#define RT_ALIGN_R0PT(u, uAlignment, CastType) ( (CastType)RT_ALIGN_T(u, uAlignment, RTR0UINTPTR) )
1074
1075	/** @def RT_ALIGN_GCPT
1076	* Align macro for GC pointers with type cast.
1077	* @param u Value to align.
1078	* @param uAlignment The alignment. Power of two!
1079	* @param CastType The type to cast the result to.
1080	*/
1081	#define RT_ALIGN_GCPT(u, uAlignment, CastType) ( (CastType)RT_ALIGN_T(u, uAlignment, RTGCUINTPTR) )
1082
1083
1084	/** @def RT_OFFSETOF
1085	* Our own special offsetof() variant, returns a signed result.
1086	*
1087	* This differs from the usual offsetof() in that it's not relying on builtin
1088	* compiler stuff and thus can use variables in arrays the structure may
1089	* contain. This is useful to determine the sizes of structures ending
1090	* with a variable length field.
1091	*
1092	* @returns offset into the structure of the specified member. signed.
1093	* @param type Structure type.
1094	* @param member Member.
1095	*/
1096	#define RT_OFFSETOF(type, member) ( (int)(uintptr_t)&( ((type )(void )0)->member) )
1097
1098	/** @def RT_UOFFSETOF
1099	* Our own special offsetof() variant, returns an unsigned result.
1100	*
1101	* This differs from the usual offsetof() in that it's not relying on builtin
1102	* compiler stuff and thus can use variables in arrays the structure may
1103	* contain. This is useful to determine the sizes of structures ending
1104	* with a variable length field.
1105	*
1106	* @returns offset into the structure of the specified member. unsigned.
1107	* @param type Structure type.
1108	* @param member Member.
1109	*/
1110	#define RT_UOFFSETOF(type, member) ( (uintptr_t)&( ((type )(void )0)->member) )
1111
1112	/** @def RT_OFFSETOF_ADD
1113	* RT_OFFSETOF with an addend.
1114	*
1115	* @returns offset into the structure of the specified member. signed.
1116	* @param type Structure type.
1117	* @param member Member.
1118	* @param addend The addend to add to the offset.
1119	*/
1120	#define RT_OFFSETOF_ADD(type, member, addend) ( (int)RT_UOFFSETOF_ADD(type, member, addend) )
1121
1122	/** @def RT_UOFFSETOF_ADD
1123	* RT_UOFFSETOF with an addend.
1124	*
1125	* @returns offset into the structure of the specified member. signed.
1126	* @param type Structure type.
1127	* @param member Member.
1128	* @param addend The addend to add to the offset.
1129	*/
1130	#define RT_UOFFSETOF_ADD(type, member, addend) ( (uintptr_t)&( ((type )(void )(uintptr_t)(addend))->member) )
1131
1132	/** @def RT_SIZEOFMEMB
1133	* Get the size of a structure member.
1134	*
1135	* @returns size of the structure member.
1136	* @param type Structure type.
1137	* @param member Member.
1138	*/
1139	#define RT_SIZEOFMEMB(type, member) ( sizeof(((type )(void )0)->member) )
1140
1141	/** @def RT_FROM_MEMBER
1142	* Convert a pointer to a structure member into a pointer to the structure.
1143	*
1144	* @returns pointer to the structure.
1145	* @param pMem Pointer to the member.
1146	* @param Type Structure type.
1147	* @param Member Member name.
1148	*/
1149	#define RT_FROM_MEMBER(pMem, Type, Member) ( (Type ) ((uint8_t )(void *)(pMem) - RT_UOFFSETOF(Type, Member)) )
1150
1151	/** @def RT_FROM_CPP_MEMBER
1152	* Same as RT_FROM_MEMBER except it avoids the annoying g++ warnings about
1153	* invalid access to non-static data member of NULL object.
1154	*
1155	* @returns pointer to the structure.
1156	* @param pMem Pointer to the member.
1157	* @param Type Structure type.
1158	* @param Member Member name.
1159	*
1160	* @remarks Using the __builtin_offsetof does not shut up the compiler.
1161	*/
1162	#if defined(__GNUC__) && defined(__cplusplus)
1163	# define RT_FROM_CPP_MEMBER(pMem, Type, Member) \
1164	( (Type ) ((uintptr_t)(pMem) - (uintptr_t)&((Type )0x1000)->Member + 0x1000U) )
1165	#else
1166	# define RT_FROM_CPP_MEMBER(pMem, Type, Member) RT_FROM_MEMBER(pMem, Type, Member)
1167	#endif
1168
1169	/** @def RT_ELEMENTS
1170	* Calculates the number of elements in a statically sized array.
1171	* @returns Element count.
1172	* @param aArray Array in question.
1173	*/
1174	#define RT_ELEMENTS(aArray) ( sizeof(aArray) / sizeof((aArray)[0]) )
1175
1176	#ifdef RT_OS_OS2
1177	/* Undefine RT_MAX since there is an unfortunate clash with the max
1178	resource type define in os2.h. */
1179	# undef RT_MAX
1180	#endif
1181
1182	/** @def RT_MAX
1183	* Finds the maximum value.
1184	* @returns The higher of the two.
1185	* @param Value1 Value 1
1186	* @param Value2 Value 2
1187	*/
1188	#define RT_MAX(Value1, Value2) ( (Value1) >= (Value2) ? (Value1) : (Value2) )
1189
1190	/** @def RT_MIN
1191	* Finds the minimum value.
1192	* @returns The lower of the two.
1193	* @param Value1 Value 1
1194	* @param Value2 Value 2
1195	*/
1196	#define RT_MIN(Value1, Value2) ( (Value1) <= (Value2) ? (Value1) : (Value2) )
1197
1198	/** @def RT_CLAMP
1199	* Clamps the value to minimum and maximum values.
1200	* @returns The clamped value.
1201	* @param Value The value to check.
1202	* @param Min Minimum value.
1203	* @param Max Maximum value.
1204	*/
1205	#define RT_CLAMP(Value, Min, Max) ( (Value) > (Max) ? (Max) : (Value) < (Min) ? (Min) : (Value) )
1206
1207	/** @def RT_ABS
1208	* Get the absolute (non-negative) value.
1209	* @returns The absolute value of Value.
1210	* @param Value The value.
1211	*/
1212	#define RT_ABS(Value) ( (Value) >= 0 ? (Value) : -(Value) )
1213
1214	/** @def RT_BOOL
1215	* Turn non-zero/zero into true/false
1216	* @returns The resulting boolean value.
1217	* @param Value The value.
1218	*/
1219	#define RT_BOOL(Value) ( !!(Value) )
1220
1221	/** @def RT_LODWORD
1222	* Gets the low dword (=uint32_t) of something. */
1223	#define RT_LODWORD(a) ( (uint32_t)(a) )
1224
1225	/** @def RT_HIDWORD
1226	* Gets the high dword (=uint32_t) of a 64-bit of something. */
1227	#define RT_HIDWORD(a) ( (uint32_t)((a) >> 32) )
1228
1229	/** @def RT_LOWORD
1230	* Gets the low word (=uint16_t) of something. */
1231	#define RT_LOWORD(a) ( (a) & 0xffff )
1232
1233	/** @def RT_HIWORD
1234	* Gets the high word (=uint16_t) of a 32-bit something. */
1235	#define RT_HIWORD(a) ( (a) >> 16 )
1236
1237	/** @def RT_LOBYTE
1238	* Gets the low byte of something. */
1239	#define RT_LOBYTE(a) ( (a) & 0xff )
1240
1241	/** @def RT_HIBYTE
1242	* Gets the low byte of a 16-bit something. */
1243	#define RT_HIBYTE(a) ( (a) >> 8 )
1244
1245	/** @def RT_BYTE1
1246	* Gets the first byte of something. */
1247	#define RT_BYTE1(a) ( (a) & 0xff )
1248
1249	/** @def RT_BYTE2
1250	* Gets the second byte of something. */
1251	#define RT_BYTE2(a) ( ((a) >> 8) & 0xff )
1252
1253	/** @def RT_BYTE3
1254	* Gets the second byte of something. */
1255	#define RT_BYTE3(a) ( ((a) >> 16) & 0xff )
1256
1257	/** @def RT_BYTE4
1258	* Gets the fourth byte of something. */
1259	#define RT_BYTE4(a) ( ((a) >> 24) & 0xff )
1260
1261	/** @def RT_BYTE5
1262	* Gets the fifth byte of something. */
1263	#define RT_BYTE5(a) (((a) >> 32) & 0xff)
1264
1265	/** @def RT_BYTE6
1266	* Gets the sixth byte of something. */
1267	#define RT_BYTE6(a) (((a) >> 40) & 0xff)
1268
1269	/** @def RT_BYTE7
1270	* Gets the seventh byte of something. */
1271	#define RT_BYTE7(a) (((a) >> 48) & 0xff)
1272
1273	/** @def RT_BYTE8
1274	* Gets the eight byte of something. */
1275	#define RT_BYTE8(a) (((a) >> 56) & 0xff)
1276
1277
1278	/** @def RT_MAKE_U64
1279	* Constructs a uint64_t value from two uint32_t values.
1280	*/
1281	#define RT_MAKE_U64(Lo, Hi) ( (uint64_t)((uint32_t)(Hi)) << 32 \| (uint32_t)(Lo) )
1282
1283	/** @def RT_MAKE_U64_FROM_U16
1284	* Constructs a uint64_t value from four uint16_t values.
1285	*/
1286	#define RT_MAKE_U64_FROM_U16(w0, w1, w2, w3) \
1287	((uint64_t)( (uint64_t)((uint16_t)(w3)) << 48 \
1288	\| (uint64_t)((uint16_t)(w2)) << 32 \
1289	\| (uint32_t)((uint16_t)(w1)) << 16 \
1290	\| (uint16_t)(w0) ))
1291
1292	/** @def RT_MAKE_U64_FROM_U8
1293	* Constructs a uint64_t value from eight uint8_t values.
1294	*/
1295	#define RT_MAKE_U64_FROM_U8(b0, b1, b2, b3, b4, b5, b6, b7) \
1296	((uint64_t)( (uint64_t)((uint8_t)(b7)) << 56 \
1297	\| (uint64_t)((uint8_t)(b6)) << 48 \
1298	\| (uint64_t)((uint8_t)(b5)) << 40 \
1299	\| (uint64_t)((uint8_t)(b4)) << 32 \
1300	\| (uint32_t)((uint8_t)(b3)) << 24 \
1301	\| (uint32_t)((uint8_t)(b2)) << 16 \
1302	\| (uint16_t)((uint8_t)(b1)) << 8 \
1303	\| (uint8_t)(b0) ))
1304
1305	/** @def RT_MAKE_U32
1306	* Constructs a uint32_t value from two uint16_t values.
1307	*/
1308	#define RT_MAKE_U32(Lo, Hi) \
1309	((uint32_t)( (uint32_t)((uint16_t)(Hi)) << 16 \
1310	\| (uint16_t)(Lo) ))
1311
1312	/** @def RT_MAKE_U32_FROM_U8
1313	* Constructs a uint32_t value from four uint8_t values.
1314	*/
1315	#define RT_MAKE_U32_FROM_U8(b0, b1, b2, b3) \
1316	((uint32_t)( (uint32_t)((uint8_t)(b3)) << 24 \
1317	\| (uint32_t)((uint8_t)(b2)) << 16 \
1318	\| (uint16_t)((uint8_t)(b1)) << 8 \
1319	\| (uint8_t)(b0) ))
1320
1321	/** @def RT_MAKE_U16
1322	* Constructs a uint16_t value from two uint8_t values.
1323	*/
1324	#define RT_MAKE_U16(Lo, Hi) \
1325	((uint16_t)( (uint16_t)((uint8_t)(Hi)) << 8 \
1326	\| (uint8_t)(Lo) ))
1327
1328
1329	/** @def RT_BSWAP_U64
1330	* Reverses the byte order of an uint64_t value. */
1331	#if 0
1332	# define RT_BSWAP_U64(u64) RT_BSWAP_U64_C(u64)
1333	#elif defined(__GNUC__)
1334	# define RT_BSWAP_U64(u64) (__builtin_constant_p((u64)) \
1335	? RT_BSWAP_U64_C(u64) : ASMByteSwapU64(u64))
1336	#else
1337	# define RT_BSWAP_U64(u64) ASMByteSwapU64(u64)
1338	#endif
1339
1340	/** @def RT_BSWAP_U32
1341	* Reverses the byte order of an uint32_t value. */
1342	#if 0
1343	# define RT_BSWAP_U32(u32) RT_BSWAP_U32_C(u32)
1344	#elif defined(__GNUC__)
1345	# define RT_BSWAP_U32(u32) (__builtin_constant_p((u32)) \
1346	? RT_BSWAP_U32_C(u32) : ASMByteSwapU32(u32))
1347	#else
1348	# define RT_BSWAP_U32(u32) ASMByteSwapU32(u32)
1349	#endif
1350
1351	/** @def RT_BSWAP_U16
1352	* Reverses the byte order of an uint16_t value. */
1353	#if 0
1354	# define RT_BSWAP_U16(u16) RT_BSWAP_U16_C(u16)
1355	#elif defined(__GNUC__)
1356	# define RT_BSWAP_U16(u16) (__builtin_constant_p((u16)) \
1357	? RT_BSWAP_U16_C(u16) : ASMByteSwapU16(u16))
1358	#else
1359	# define RT_BSWAP_U16(u16) ASMByteSwapU16(u16)
1360	#endif
1361
1362
1363	/** @def RT_BSWAP_U64_C
1364	* Reverses the byte order of an uint64_t constant. */
1365	#define RT_BSWAP_U64_C(u64) RT_MAKE_U64(RT_BSWAP_U32_C((u64) >> 32), RT_BSWAP_U32_C((u64) & 0xffffffff))
1366
1367	/** @def RT_BSWAP_U32_C
1368	* Reverses the byte order of an uint32_t constant. */
1369	#define RT_BSWAP_U32_C(u32) RT_MAKE_U32_FROM_U8(RT_BYTE4(u32), RT_BYTE3(u32), RT_BYTE2(u32), RT_BYTE1(u32))
1370
1371	/** @def RT_BSWAP_U16_C
1372	* Reverses the byte order of an uint16_t constant. */
1373	#define RT_BSWAP_U16_C(u16) RT_MAKE_U16(RT_HIBYTE(u16), RT_LOBYTE(u16))
1374
1375
1376	/** @def RT_H2LE_U64
1377	* Converts an uint64_t value from host to little endian byte order. */
1378	#ifdef RT_BIG_ENDIAN
1379	# define RT_H2LE_U64(u64) RT_BSWAP_U64(u64)
1380	#else
1381	# define RT_H2LE_U64(u64) (u64)
1382	#endif
1383
1384	/** @def RT_H2LE_U64_C
1385	* Converts an uint64_t constant from host to little endian byte order. */
1386	#ifdef RT_BIG_ENDIAN
1387	# define RT_H2LE_U64_C(u64) RT_BSWAP_U64_C(u64)
1388	#else
1389	# define RT_H2LE_U64_C(u64) (u64)
1390	#endif
1391
1392	/** @def RT_H2LE_U32
1393	* Converts an uint32_t value from host to little endian byte order. */
1394	#ifdef RT_BIG_ENDIAN
1395	# define RT_H2LE_U32(u32) RT_BSWAP_U32(u32)
1396	#else
1397	# define RT_H2LE_U32(u32) (u32)
1398	#endif
1399
1400	/** @def RT_H2LE_U32_C
1401	* Converts an uint32_t constant from host to little endian byte order. */
1402	#ifdef RT_BIG_ENDIAN
1403	# define RT_H2LE_U32_C(u32) RT_BSWAP_U32_C(u32)
1404	#else
1405	# define RT_H2LE_U32_C(u32) (u32)
1406	#endif
1407
1408	/** @def RT_H2LE_U16
1409	* Converts an uint16_t value from host to little endian byte order. */
1410	#ifdef RT_BIG_ENDIAN
1411	# define RT_H2LE_U16(u16) RT_BSWAP_U16(u16)
1412	#else
1413	# define RT_H2LE_U16(u16) (u16)
1414	#endif
1415
1416	/** @def RT_H2LE_U16_C
1417	* Converts an uint16_t constant from host to little endian byte order. */
1418	#ifdef RT_BIG_ENDIAN
1419	# define RT_H2LE_U16_C(u16) RT_BSWAP_U16_C(u16)
1420	#else
1421	# define RT_H2LE_U16_C(u16) (u16)
1422	#endif
1423
1424
1425	/** @def RT_LE2H_U64
1426	* Converts an uint64_t value from little endian to host byte order. */
1427	#ifdef RT_BIG_ENDIAN
1428	# define RT_LE2H_U64(u64) RT_BSWAP_U64(u64)
1429	#else
1430	# define RT_LE2H_U64(u64) (u64)
1431	#endif
1432
1433	/** @def RT_LE2H_U64_C
1434	* Converts an uint64_t constant from little endian to host byte order. */
1435	#ifdef RT_BIG_ENDIAN
1436	# define RT_LE2H_U64_C(u64) RT_BSWAP_U64_C(u64)
1437	#else
1438	# define RT_LE2H_U64_C(u64) (u64)
1439	#endif
1440
1441	/** @def RT_LE2H_U32
1442	* Converts an uint32_t value from little endian to host byte order. */
1443	#ifdef RT_BIG_ENDIAN
1444	# define RT_LE2H_U32(u32) RT_BSWAP_U32(u32)
1445	#else
1446	# define RT_LE2H_U32(u32) (u32)
1447	#endif
1448
1449	/** @def RT_LE2H_U32_C
1450	* Converts an uint32_t constant from little endian to host byte order. */
1451	#ifdef RT_BIG_ENDIAN
1452	# define RT_LE2H_U32_C(u32) RT_BSWAP_U32_C(u32)
1453	#else
1454	# define RT_LE2H_U32_C(u32) (u32)
1455	#endif
1456
1457	/** @def RT_LE2H_U16
1458	* Converts an uint16_t value from little endian to host byte order. */
1459	#ifdef RT_BIG_ENDIAN
1460	# define RT_LE2H_U16(u16) RT_BSWAP_U16(u16)
1461	#else
1462	# define RT_LE2H_U16(u16) (u16)
1463	#endif
1464
1465	/** @def RT_LE2H_U16_C
1466	* Converts an uint16_t constant from little endian to host byte order. */
1467	#ifdef RT_BIG_ENDIAN
1468	# define RT_LE2H_U16_C(u16) RT_BSWAP_U16_C(u16)
1469	#else
1470	# define RT_LE2H_U16_C(u16) (u16)
1471	#endif
1472
1473
1474	/** @def RT_H2BE_U64
1475	* Converts an uint64_t value from host to big endian byte order. */
1476	#ifdef RT_BIG_ENDIAN
1477	# define RT_H2BE_U64(u64) (u64)
1478	#else
1479	# define RT_H2BE_U64(u64) RT_BSWAP_U64(u64)
1480	#endif
1481
1482	/** @def RT_H2BE_U64_C
1483	* Converts an uint64_t constant from host to big endian byte order. */
1484	#ifdef RT_BIG_ENDIAN
1485	# define RT_H2BE_U64_C(u64) (u64)
1486	#else
1487	# define RT_H2BE_U64_C(u64) RT_BSWAP_U64_C(u64)
1488	#endif
1489
1490	/** @def RT_H2BE_U32
1491	* Converts an uint32_t value from host to big endian byte order. */
1492	#ifdef RT_BIG_ENDIAN
1493	# define RT_H2BE_U32(u32) (u32)
1494	#else
1495	# define RT_H2BE_U32(u32) RT_BSWAP_U32(u32)
1496	#endif
1497
1498	/** @def RT_H2BE_U32_C
1499	* Converts an uint32_t constant from host to big endian byte order. */
1500	#ifdef RT_BIG_ENDIAN
1501	# define RT_H2BE_U32_C(u32) (u32)
1502	#else
1503	# define RT_H2BE_U32_C(u32) RT_BSWAP_U32_C(u32)
1504	#endif
1505
1506	/** @def RT_H2BE_U16
1507	* Converts an uint16_t value from host to big endian byte order. */
1508	#ifdef RT_BIG_ENDIAN
1509	# define RT_H2BE_U16(u16) (u16)
1510	#else
1511	# define RT_H2BE_U16(u16) RT_BSWAP_U16(u16)
1512	#endif
1513
1514	/** @def RT_H2BE_U16_C
1515	* Converts an uint16_t constant from host to big endian byte order. */
1516	#ifdef RT_BIG_ENDIAN
1517	# define RT_H2BE_U16_C(u16) (u16)
1518	#else
1519	# define RT_H2BE_U16_C(u16) RT_BSWAP_U16_C(u16)
1520	#endif
1521
1522	/** @def RT_BE2H_U64
1523	* Converts an uint64_t value from big endian to host byte order. */
1524	#ifdef RT_BIG_ENDIAN
1525	# define RT_BE2H_U64(u64) (u64)
1526	#else
1527	# define RT_BE2H_U64(u64) RT_BSWAP_U64(u64)
1528	#endif
1529
1530	/** @def RT_BE2H_U64
1531	* Converts an uint64_t constant from big endian to host byte order. */
1532	#ifdef RT_BIG_ENDIAN
1533	# define RT_BE2H_U64_C(u64) (u64)
1534	#else
1535	# define RT_BE2H_U64_C(u64) RT_BSWAP_U64_C(u64)
1536	#endif
1537
1538	/** @def RT_BE2H_U32
1539	* Converts an uint32_t value from big endian to host byte order. */
1540	#ifdef RT_BIG_ENDIAN
1541	# define RT_BE2H_U32(u32) (u32)
1542	#else
1543	# define RT_BE2H_U32(u32) RT_BSWAP_U32(u32)
1544	#endif
1545
1546	/** @def RT_BE2H_U32_C
1547	* Converts an uint32_t value from big endian to host byte order. */
1548	#ifdef RT_BIG_ENDIAN
1549	# define RT_BE2H_U32_C(u32) (u32)
1550	#else
1551	# define RT_BE2H_U32_C(u32) RT_BSWAP_U32_C(u32)
1552	#endif
1553
1554	/** @def RT_BE2H_U16
1555	* Converts an uint16_t value from big endian to host byte order. */
1556	#ifdef RT_BIG_ENDIAN
1557	# define RT_BE2H_U16(u16) (u16)
1558	#else
1559	# define RT_BE2H_U16(u16) RT_BSWAP_U16(u16)
1560	#endif
1561
1562	/** @def RT_BE2H_U16_C
1563	* Converts an uint16_t constant from big endian to host byte order. */
1564	#ifdef RT_BIG_ENDIAN
1565	# define RT_BE2H_U16_C(u16) (u16)
1566	#else
1567	# define RT_BE2H_U16_C(u16) RT_BSWAP_U16_C(u16)
1568	#endif
1569
1570
1571	/** @def RT_H2N_U64
1572	* Converts an uint64_t value from host to network byte order. */
1573	#define RT_H2N_U64(u64) RT_H2BE_U64(u64)
1574
1575	/** @def RT_H2N_U64_C
1576	* Converts an uint64_t constant from host to network byte order. */
1577	#define RT_H2N_U64_C(u64) RT_H2BE_U64_C(u64)
1578
1579	/** @def RT_H2N_U32
1580	* Converts an uint32_t value from host to network byte order. */
1581	#define RT_H2N_U32(u32) RT_H2BE_U32(u32)
1582
1583	/** @def RT_H2N_U32_C
1584	* Converts an uint32_t constant from host to network byte order. */
1585	#define RT_H2N_U32_C(u32) RT_H2BE_U32_C(u32)
1586
1587	/** @def RT_H2N_U16
1588	* Converts an uint16_t value from host to network byte order. */
1589	#define RT_H2N_U16(u16) RT_H2BE_U16(u16)
1590
1591	/** @def RT_H2N_U16_C
1592	* Converts an uint16_t constant from host to network byte order. */
1593	#define RT_H2N_U16_C(u16) RT_H2BE_U16_C(u16)
1594
1595	/** @def RT_N2H_U64
1596	* Converts an uint64_t value from network to host byte order. */
1597	#define RT_N2H_U64(u64) RT_BE2H_U64(u64)
1598
1599	/** @def RT_N2H_U64_C
1600	* Converts an uint64_t constant from network to host byte order. */
1601	#define RT_N2H_U64_C(u64) RT_BE2H_U64_C(u64)
1602
1603	/** @def RT_N2H_U32
1604	* Converts an uint32_t value from network to host byte order. */
1605	#define RT_N2H_U32(u32) RT_BE2H_U32(u32)
1606
1607	/** @def RT_N2H_U32_C
1608	* Converts an uint32_t constant from network to host byte order. */
1609	#define RT_N2H_U32_C(u32) RT_BE2H_U32_C(u32)
1610
1611	/** @def RT_N2H_U16
1612	* Converts an uint16_t value from network to host byte order. */
1613	#define RT_N2H_U16(u16) RT_BE2H_U16(u16)
1614
1615	/** @def RT_N2H_U16_C
1616	* Converts an uint16_t value from network to host byte order. */
1617	#define RT_N2H_U16_C(u16) RT_BE2H_U16_C(u16)
1618
1619
1620	/*
1621	* The BSD sys/param.h + machine/param.h file is a major source of
1622	* namespace pollution. Kill off some of the worse ones unless we're
1623	* compiling kernel code.
1624	*/
1625	#if defined(RT_OS_DARWIN) \
1626	&& !defined(KERNEL) \
1627	&& !defined(RT_NO_BSD_PARAM_H_UNDEFING) \
1628	&& ( defined(_SYS_PARAM_H_) \|\| defined(_I386_PARAM_H_) )
1629	/* sys/param.h: */
1630	# undef PSWP
1631	# undef PVM
1632	# undef PINOD
1633	# undef PRIBO
1634	# undef PVFS
1635	# undef PZERO
1636	# undef PSOCK
1637	# undef PWAIT
1638	# undef PLOCK
1639	# undef PPAUSE
1640	# undef PUSER
1641	# undef PRIMASK
1642	# undef MINBUCKET
1643	# undef MAXALLOCSAVE
1644	# undef FSHIFT
1645	# undef FSCALE
1646
1647	/* i386/machine.h: */
1648	# undef ALIGN
1649	# undef ALIGNBYTES
1650	# undef DELAY
1651	# undef STATUS_WORD
1652	# undef USERMODE
1653	# undef BASEPRI
1654	# undef MSIZE
1655	# undef CLSIZE
1656	# undef CLSIZELOG2
1657	#endif
1658
1659
1660	/** @def NULL
1661	* NULL pointer.
1662	*/
1663	#ifndef NULL
1664	# ifdef __cplusplus
1665	# define NULL 0
1666	# else
1667	# define NULL ((void*)0)
1668	# endif
1669	#endif
1670
1671	/** @def NIL_OFFSET
1672	* NIL offset.
1673	* Whenever we use offsets instead of pointers to save space and relocation effort
1674	* NIL_OFFSET shall be used as the equivalent to NULL.
1675	*/
1676	#define NIL_OFFSET (~0U)
1677
1678	/** @def NOREF
1679	* Keeps the compiler from bitching about an unused parameter.
1680	*/
1681	#define NOREF(var) (void)(var)
1682
1683	/** @def RT_BREAKPOINT
1684	* Emit a debug breakpoint instruction.
1685	*
1686	* @remarks In the x86/amd64 gnu world we add a nop instruction after the int3
1687	* to force gdb to remain at the int3 source line.
1688	* @remarks The L4 kernel will try make sense of the breakpoint, thus the jmp on
1689	* x86/amd64.
1690	*/
1691	#ifdef __GNUC__
1692	# if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
1693	# if !defined(__L4ENV__)
1694	# define RT_BREAKPOINT() __asm__ __volatile__("int $3\n\tnop\n\t")
1695	# else
1696	# define RT_BREAKPOINT() __asm__ __volatile__("int3; jmp 1f; 1:\n\t")
1697	# endif
1698	# elif defined(RT_ARCH_SPARC64)
1699	# define RT_BREAKPOINT() __asm__ __volatile__("illtrap 0\n\t") /** @todo Sparc64: this is just a wild guess. */
1700	# elif defined(RT_ARCH_SPARC)
1701	# define RT_BREAKPOINT() __asm__ __volatile__("unimp 0\n\t") /** @todo Sparc: this is just a wild guess (same as Sparc64, just different name). */
1702	# endif
1703	#endif
1704	#ifdef _MSC_VER
1705	# define RT_BREAKPOINT() __debugbreak()
1706	#endif
1707	#if defined(__IBMC__) \|\| defined(__IBMCPP__)
1708	# define RT_BREAKPOINT() __interrupt(3)
1709	#endif
1710	#ifndef RT_BREAKPOINT
1711	# error "This compiler/arch is not supported!"
1712	#endif
1713
1714
1715	/** @defgroup grp_rt_cdefs_size Size Constants
1716	* (Of course, these are binary computer terms, not SI.)
1717	* @{
1718	*/
1719	/** 1 K (Kilo) (1 024). */
1720	#define _1K 0x00000400
1721	/** 4 K (Kilo) (4 096). */
1722	#define _4K 0x00001000
1723	/** 32 K (Kilo) (32 678). */
1724	#define _32K 0x00008000
1725	/** 64 K (Kilo) (65 536). */
1726	#define _64K 0x00010000
1727	/** 128 K (Kilo) (131 072). */
1728	#define _128K 0x00020000
1729	/** 256 K (Kilo) (262 144). */
1730	#define _256K 0x00040000
1731	/** 512 K (Kilo) (524 288). */
1732	#define _512K 0x00080000
1733	/** 1 M (Mega) (1 048 576). */
1734	#define _1M 0x00100000
1735	/** 2 M (Mega) (2 097 152). */
1736	#define _2M 0x00200000
1737	/** 4 M (Mega) (4 194 304). */
1738	#define _4M 0x00400000
1739	/** 1 G (Giga) (1 073 741 824). (32-bit) */
1740	#define _1G 0x40000000
1741	/** 1 G (Giga) (1 073 741 824). (64-bit) */
1742	#define _1G64 0x40000000LL
1743	/** 2 G (Giga) (2 147 483 648). (32-bit) */
1744	#define _2G32 0x80000000U
1745	/** 2 G (Giga) (2 147 483 648). (64-bit) */
1746	#define _2G 0x0000000080000000LL
1747	/** 4 G (Giga) (4 294 967 296). */
1748	#define _4G 0x0000000100000000LL
1749	/** 1 T (Tera) (1 099 511 627 776). */
1750	#define _1T 0x0000010000000000LL
1751	/** 1 P (Peta) (1 125 899 906 842 624). */
1752	#define _1P 0x0004000000000000LL
1753	/** 1 E (Exa) (1 152 921 504 606 846 976). */
1754	#define _1E 0x1000000000000000LL
1755	/** 2 E (Exa) (2 305 843 009 213 693 952). */
1756	#define _2E 0x2000000000000000ULL
1757	/** @} */
1758
1759
1760	/** @defgroup grp_rt_cdefs_time Time Constants
1761	* @{
1762	*/
1763	/** 1 hour expressed in nanoseconds (64-bit). */
1764	#define RT_NS_1HOUR UINT64_C(3600000000000)
1765	/** 1 minute expressed in nanoseconds (64-bit). */
1766	#define RT_NS_1MIN UINT64_C(60000000000)
1767	/** 1 second expressed in nanoseconds. */
1768	#define RT_NS_1SEC UINT32_C(1000000000)
1769	/** 100 millsecond expressed in nanoseconds. */
1770	#define RT_NS_100MS UINT32_C(100000000)
1771	/** 10 millsecond expressed in nanoseconds. */
1772	#define RT_NS_10MS UINT32_C(10000000)
1773	/** 1 millsecond expressed in nanoseconds. */
1774	#define RT_NS_1MS UINT32_C(1000000)
1775	/** 100 microseconds expressed in nanoseconds. */
1776	#define RT_NS_100US UINT32_C(100000)
1777	/** 10 microseconds expressed in nanoseconds. */
1778	#define RT_NS_10US UINT32_C(10000)
1779	/** 1 microsecond expressed in nanoseconds. */
1780	#define RT_NS_1US UINT32_C(1000)
1781
1782	/** 1 second expressed in nanoseconds - 64-bit type. */
1783	#define RT_NS_1SEC_64 UINT64_C(1000000000)
1784	/** 100 millsecond expressed in nanoseconds - 64-bit type. */
1785	#define RT_NS_100MS_64 UINT64_C(100000000)
1786	/** 10 millsecond expressed in nanoseconds - 64-bit type. */
1787	#define RT_NS_10MS_64 UINT64_C(10000000)
1788	/** 1 millsecond expressed in nanoseconds - 64-bit type. */
1789	#define RT_NS_1MS_64 UINT64_C(1000000)
1790	/** 100 microseconds expressed in nanoseconds - 64-bit type. */
1791	#define RT_NS_100US_64 UINT64_C(100000)
1792	/** 10 microseconds expressed in nanoseconds - 64-bit type. */
1793	#define RT_NS_10US_64 UINT64_C(10000)
1794	/** 1 microsecond expressed in nanoseconds - 64-bit type. */
1795	#define RT_NS_1US_64 UINT64_C(1000)
1796
1797	/** 1 hour expressed in microseconds. */
1798	#define RT_US_1HOUR UINT32_C(3600000000)
1799	/** 1 minute expressed in microseconds. */
1800	#define RT_US_1MIN UINT32_C(60000000)
1801	/** 1 second expressed in microseconds. */
1802	#define RT_US_1SEC UINT32_C(1000000)
1803	/** 100 millsecond expressed in microseconds. */
1804	#define RT_US_100MS UINT32_C(100000)
1805	/** 10 millsecond expressed in microseconds. */
1806	#define RT_US_10MS UINT32_C(10000)
1807	/** 1 millsecond expressed in microseconds. */
1808	#define RT_US_1MS UINT32_C(1000)
1809
1810	/** 1 hour expressed in microseconds - 64-bit type. */
1811	#define RT_US_1HOUR_64 UINT64_C(3600000000)
1812	/** 1 minute expressed in microseconds - 64-bit type. */
1813	#define RT_US_1MIN_64 UINT64_C(60000000)
1814	/** 1 second expressed in microseconds - 64-bit type. */
1815	#define RT_US_1SEC_64 UINT64_C(1000000)
1816	/** 100 millsecond expressed in microseconds - 64-bit type. */
1817	#define RT_US_100MS_64 UINT64_C(100000)
1818	/** 10 millsecond expressed in microseconds - 64-bit type. */
1819	#define RT_US_10MS_64 UINT64_C(10000)
1820	/** 1 millsecond expressed in microseconds - 64-bit type. */
1821	#define RT_US_1MS_64 UINT64_C(1000)
1822
1823	/** 1 hour expressed in milliseconds. */
1824	#define RT_MS_1HOUR UINT32_C(3600000)
1825	/** 1 minute expressed in milliseconds. */
1826	#define RT_MS_1MIN UINT32_C(60000)
1827	/** 1 second expressed in milliseconds. */
1828	#define RT_MS_1SEC UINT32_C(1000)
1829
1830	/** 1 hour expressed in milliseconds - 64-bit type. */
1831	#define RT_MS_1HOUR_64 UINT64_C(3600000)
1832	/** 1 minute expressed in milliseconds - 64-bit type. */
1833	#define RT_MS_1MIN_64 UINT64_C(60000)
1834	/** 1 second expressed in milliseconds - 64-bit type. */
1835	#define RT_MS_1SEC_64 UINT64_C(1000)
1836
1837	/** The number of seconds per week. */
1838	#define RT_SEC_1WEEK UINT32_C(604800)
1839	/** The number of seconds per day. */
1840	#define RT_SEC_1DAY UINT32_C(86400)
1841	/** The number of seconds per hour. */
1842	#define RT_SEC_1HOUR UINT32_C(3600)
1843
1844	/** The number of seconds per week - 64-bit type. */
1845	#define RT_SEC_1WEEK_64 UINT64_C(604800)
1846	/** The number of seconds per day - 64-bit type. */
1847	#define RT_SEC_1DAY_64 UINT64_C(86400)
1848	/** The number of seconds per hour - 64-bit type. */
1849	#define RT_SEC_1HOUR_64 UINT64_C(3600)
1850	/** @} */
1851
1852
1853	/** @defgroup grp_rt_cdefs_dbgtype Debug Info Types
1854	* @{ */
1855	/** Other format. */
1856	#define RT_DBGTYPE_OTHER RT_BIT_32(0)
1857	/** Stabs. */
1858	#define RT_DBGTYPE_STABS RT_BIT_32(1)
1859	/** Debug With Arbitrary Record Format (DWARF). */
1860	#define RT_DBGTYPE_DWARF RT_BIT_32(2)
1861	/** Microsoft Codeview debug info. */
1862	#define RT_DBGTYPE_CODEVIEW RT_BIT_32(3)
1863	/** Watcom debug info. */
1864	#define RT_DBGTYPE_WATCOM RT_BIT_32(4)
1865	/** IBM High Level Language debug info. */
1866	#define RT_DBGTYPE_HLL RT_BIT_32(5)
1867	/** Old OS/2 and Windows symbol file. */
1868	#define RT_DBGTYPE_SYM RT_BIT_32(6)
1869	/** Map file. */
1870	#define RT_DBGTYPE_MAP RT_BIT_32(7)
1871	/** @} */
1872
1873
1874	/** @defgroup grp_rt_cdefs_exetype Executable Image Types
1875	* @{ */
1876	/** Some other format. */
1877	#define RT_EXETYPE_OTHER RT_BIT_32(0)
1878	/** Portable Executable. */
1879	#define RT_EXETYPE_PE RT_BIT_32(1)
1880	/** Linear eXecutable. */
1881	#define RT_EXETYPE_LX RT_BIT_32(2)
1882	/** Linear Executable. */
1883	#define RT_EXETYPE_LE RT_BIT_32(3)
1884	/** New Executable. */
1885	#define RT_EXETYPE_NE RT_BIT_32(4)
1886	/** DOS Executable (Mark Zbikowski). */
1887	#define RT_EXETYPE_MZ RT_BIT_32(5)
1888	/** COM Executable. */
1889	#define RT_EXETYPE_COM RT_BIT_32(6)
1890	/** a.out Executable. */
1891	#define RT_EXETYPE_AOUT RT_BIT_32(7)
1892	/** Executable and Linkable Format. */
1893	#define RT_EXETYPE_ELF RT_BIT_32(8)
1894	/** Mach-O Executable (including FAT ones). */
1895	#define RT_EXETYPE_MACHO RT_BIT_32(9)
1896	/** TE from UEFI. */
1897	#define RT_EXETYPE_TE RT_BIT_32(9)
1898	/** @} */
1899
1900
1901	/** @def VALID_PTR
1902	* Pointer validation macro.
1903	* @param ptr The pointer.
1904	*/
1905	#if defined(RT_ARCH_AMD64)
1906	# ifdef IN_RING3
1907	# if defined(RT_OS_DARWIN) /* first 4GB is reserved for legacy kernel. */
1908	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) >= _4G \
1909	&& !((uintptr_t)(ptr) & 0xffff800000000000ULL) )
1910	# elif defined(RT_OS_SOLARIS) /* The kernel only used the top 2TB, but keep it simple. */
1911	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U \
1912	&& ( ((uintptr_t)(ptr) & 0xffff800000000000ULL) == 0xffff800000000000ULL \
1913	\|\| ((uintptr_t)(ptr) & 0xffff800000000000ULL) == 0) )
1914	# else
1915	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U \
1916	&& !((uintptr_t)(ptr) & 0xffff800000000000ULL) )
1917	# endif
1918	# else /* !IN_RING3 */
1919	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U \
1920	&& ( ((uintptr_t)(ptr) & 0xffff800000000000ULL) == 0xffff800000000000ULL \
1921	\|\| ((uintptr_t)(ptr) & 0xffff800000000000ULL) == 0) )
1922	# endif /* !IN_RING3 */
1923
1924	#elif defined(RT_ARCH_X86)
1925	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U )
1926
1927	#elif defined(RT_ARCH_SPARC64)
1928	# ifdef IN_RING3
1929	# if defined(RT_OS_SOLARIS)
1930	/** Sparc64 user mode: According to Figure 9.4 in solaris internals */
1931	/** @todo # define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x80004000U >= 0x80004000U + 0x100000000ULL ) - figure this. */
1932	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x80000000U >= 0x80000000U + 0x100000000ULL )
1933	# else
1934	# error "Port me"
1935	# endif
1936	# else /* !IN_RING3 */
1937	# if defined(RT_OS_SOLARIS)
1938	/** @todo Sparc64 kernel mode: This is according to Figure 11.1 in solaris
1939	* internals. Verify in sources. */
1940	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) >= 0x01000000U )
1941	# else
1942	# error "Port me"
1943	# endif
1944	# endif /* !IN_RING3 */
1945
1946	#elif defined(RT_ARCH_SPARC)
1947	# ifdef IN_RING3
1948	# ifdef RT_OS_SOLARIS
1949	/** Sparc user mode: According to
1950	* http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/sun4/os/startup.c#510 */
1951	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x400000U >= 0x400000U + 0x2000U )
1952
1953	# else
1954	# error "Port me"
1955	# endif
1956	# else /* !IN_RING3 */
1957	# ifdef RT_OS_SOLARIS
1958	/** @todo Sparc kernel mode: Check the sources! */
1959	# define RT_VALID_PTR(ptr) ( (uintptr_t)(ptr) + 0x1000U >= 0x2000U )
1960	# else
1961	# error "Port me"
1962	# endif
1963	# endif /* !IN_RING3 */
1964
1965	#else
1966	# error "Architecture identifier missing / not implemented."
1967	#endif
1968
1969	/** Old name for RT_VALID_PTR. */
1970	#define VALID_PTR(ptr) RT_VALID_PTR(ptr)
1971
1972	/** @def RT_VALID_ALIGNED_PTR
1973	* Pointer validation macro that also checks the alignment.
1974	* @param ptr The pointer.
1975	* @param align The alignment, must be a power of two.
1976	*/
1977	#define RT_VALID_ALIGNED_PTR(ptr, align) \
1978	( !((uintptr_t)(ptr) & (uintptr_t)((align) - 1)) \
1979	&& VALID_PTR(ptr) )
1980
1981
1982	/** @def VALID_PHYS32
1983	* 32 bits physical address validation macro.
1984	* @param Phys The RTGCPHYS address.
1985	*/
1986	#define VALID_PHYS32(Phys) ( (uint64_t)(Phys) < (uint64_t)_4G )
1987
1988	/** @def N_
1989	* The \#define N_ is used to mark a string for translation. This is usable in
1990	* any part of the code, as it is only used by the tools that create message
1991	* catalogs. This macro is a no-op as far as the compiler and code generation
1992	* is concerned.
1993	*
1994	* If you want to both mark a string for translation and translate it, use _().
1995	*/
1996	#define N_(s) (s)
1997
1998	/** @def _
1999	* The \#define _ is used to mark a string for translation and to translate it
2000	* in one step.
2001	*
2002	* If you want to only mark a string for translation, use N_().
2003	*/
2004	#define _(s) gettext(s)
2005
2006
2007	/** @def __PRETTY_FUNCTION__
2008	* With GNU C we'd like to use the builtin __PRETTY_FUNCTION__, so define that
2009	* for the other compilers.
2010	*/
2011	#if !defined(__GNUC__) && !defined(__PRETTY_FUNCTION__)
2012	# define __PRETTY_FUNCTION__ __FUNCTION__
2013	#endif
2014
2015
2016	/** @def RT_STRICT
2017	* The \#define RT_STRICT controls whether or not assertions and other runtime
2018	* checks should be compiled in or not.
2019	*
2020	* If you want assertions which are not subject to compile time options use
2021	* the AssertRelease*() flavors.
2022	*/
2023	#if !defined(RT_STRICT) && defined(DEBUG)
2024	# define RT_STRICT
2025	#endif
2026
2027	/** @todo remove this: */
2028	#if !defined(RT_LOCK_STRICT) && !defined(DEBUG_bird)
2029	# define RT_LOCK_NO_STRICT
2030	#endif
2031	#if !defined(RT_LOCK_STRICT_ORDER) && !defined(DEBUG_bird)
2032	# define RT_LOCK_NO_STRICT_ORDER
2033	#endif
2034
2035	/** @def RT_LOCK_STRICT
2036	* The \#define RT_LOCK_STRICT controls whether deadlock detection and related
2037	* checks are done in the lock and semaphore code. It is by default enabled in
2038	* RT_STRICT builds, but this behavior can be overridden by defining
2039	* RT_LOCK_NO_STRICT. */
2040	#if !defined(RT_LOCK_STRICT) && !defined(RT_LOCK_NO_STRICT) && defined(RT_STRICT)
2041	# define RT_LOCK_STRICT
2042	#endif
2043	/** @def RT_LOCK_NO_STRICT
2044	* The \#define RT_LOCK_NO_STRICT disables RT_LOCK_STRICT. */
2045	#if defined(RT_LOCK_NO_STRICT) && defined(RT_LOCK_STRICT)
2046	# undef RT_LOCK_STRICT
2047	#endif
2048
2049	/** @def RT_LOCK_STRICT_ORDER
2050	* The \#define RT_LOCK_STRICT_ORDER controls whether locking order is checked
2051	* by the lock and semaphore code. It is by default enabled in RT_STRICT
2052	* builds, but this behavior can be overridden by defining
2053	* RT_LOCK_NO_STRICT_ORDER. */
2054	#if !defined(RT_LOCK_STRICT_ORDER) && !defined(RT_LOCK_NO_STRICT_ORDER) && defined(RT_STRICT)
2055	# define RT_LOCK_STRICT_ORDER
2056	#endif
2057	/** @def RT_LOCK_NO_STRICT_ORDER
2058	* The \#define RT_LOCK_NO_STRICT_ORDER disables RT_LOCK_STRICT_ORDER. */
2059	#if defined(RT_LOCK_NO_STRICT_ORDER) && defined(RT_LOCK_STRICT_ORDER)
2060	# undef RT_LOCK_STRICT_ORDER
2061	#endif
2062
2063
2064	/** Source position. */
2065	#define RT_SRC_POS __FILE__, __LINE__, __PRETTY_FUNCTION__
2066
2067	/** Source position declaration. */
2068	#define RT_SRC_POS_DECL const char pszFile, unsigned iLine, const char pszFunction
2069
2070	/** Source position arguments. */
2071	#define RT_SRC_POS_ARGS pszFile, iLine, pszFunction
2072
2073	/** Applies NOREF() to the source position arguments. */
2074	#define RT_SRC_POS_NOREF() do { NOREF(pszFile); NOREF(iLine); NOREF(pszFunction); } while (0)
2075
2076
2077	/** @def RT_INLINE_ASM_EXTERNAL
2078	* Defined as 1 if the compiler does not support inline assembly.
2079	* The ASM* functions will then be implemented in external .asm files.
2080	*/
2081	#if (defined(_MSC_VER) && defined(RT_ARCH_AMD64)) \
2082	\|\| (!defined(RT_ARCH_AMD64) && !defined(RT_ARCH_X86))
2083	# define RT_INLINE_ASM_EXTERNAL 1
2084	#else
2085	# define RT_INLINE_ASM_EXTERNAL 0
2086	#endif
2087
2088	/** @def RT_INLINE_ASM_GNU_STYLE
2089	* Defined as 1 if the compiler understands GNU style inline assembly.
2090	*/
2091	#if defined(_MSC_VER)
2092	# define RT_INLINE_ASM_GNU_STYLE 0
2093	#else
2094	# define RT_INLINE_ASM_GNU_STYLE 1
2095	#endif
2096
2097	/** @def RT_INLINE_ASM_USES_INTRIN
2098	* Defined as 1 if the compiler have and uses intrin.h. Otherwise it is 0. */
2099	#ifdef _MSC_VER
2100	# if _MSC_VER >= 1400
2101	# define RT_INLINE_ASM_USES_INTRIN 1
2102	# endif
2103	#endif
2104	#ifndef RT_INLINE_ASM_USES_INTRIN
2105	# define RT_INLINE_ASM_USES_INTRIN 0
2106	#endif
2107
2108	/** @} */
2109
2110
2111	/** @defgroup grp_rt_cdefs_cpp Special Macros for C++
2112	* @ingroup grp_rt_cdefs
2113	* @{
2114	*/
2115
2116	#ifdef __cplusplus
2117
2118	/** @def DECLEXPORT_CLASS
2119	* How to declare an exported class. Place this macro after the 'class'
2120	* keyword in the declaration of every class you want to export.
2121	*
2122	* @note It is necessary to use this macro even for inner classes declared
2123	* inside the already exported classes. This is a GCC specific requirement,
2124	* but it seems not to harm other compilers.
2125	*/
2126	#if defined(_MSC_VER) \|\| defined(RT_OS_OS2)
2127	# define DECLEXPORT_CLASS __declspec(dllexport)
2128	#elif defined(RT_USE_VISIBILITY_DEFAULT)
2129	# define DECLEXPORT_CLASS __attribute__((visibility("default")))
2130	#else
2131	# define DECLEXPORT_CLASS
2132	#endif
2133
2134	/** @def DECLIMPORT_CLASS
2135	* How to declare an imported class Place this macro after the 'class'
2136	* keyword in the declaration of every class you want to export.
2137	*
2138	* @note It is necessary to use this macro even for inner classes declared
2139	* inside the already exported classes. This is a GCC specific requirement,
2140	* but it seems not to harm other compilers.
2141	*/
2142	#if defined(_MSC_VER) \|\| (defined(RT_OS_OS2) && !defined(__IBMC__) && !defined(__IBMCPP__))
2143	# define DECLIMPORT_CLASS __declspec(dllimport)
2144	#elif defined(RT_USE_VISIBILITY_DEFAULT)
2145	# define DECLIMPORT_CLASS __attribute__((visibility("default")))
2146	#else
2147	# define DECLIMPORT_CLASS
2148	#endif
2149
2150	/** @def WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP
2151	* Macro to work around error C2593 of the not-so-smart MSVC 7.x ambiguity
2152	* resolver. The following snippet clearly demonstrates the code causing this
2153	* error:
2154	* @code
2155	* class A
2156	* {
2157	* public:
2158	* operator bool() const { return false; }
2159	* operator int*() const { return NULL; }
2160	* };
2161	* int main()
2162	* {
2163	* A a;
2164	* if (!a);
2165	* if (a && 0);
2166	* return 0;
2167	* }
2168	* @endcode
2169	* The code itself seems pretty valid to me and GCC thinks the same.
2170	*
2171	* This macro fixes the compiler error by explicitly overloading implicit
2172	* global operators !, && and \|\| that take the given class instance as one of
2173	* their arguments.
2174	*
2175	* The best is to use this macro right after the class declaration.
2176	*
2177	* @note The macro expands to nothing for compilers other than MSVC.
2178	*
2179	* @param Cls Class to apply the workaround to
2180	*/
2181	#if defined(_MSC_VER)
2182	# define WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP(Cls) \
2183	inline bool operator! (const Cls &that) { return !bool (that); } \
2184	inline bool operator&& (const Cls &that, bool b) { return bool (that) && b; } \
2185	inline bool operator\|\| (const Cls &that, bool b) { return bool (that) \|\| b; } \
2186	inline bool operator&& (bool b, const Cls &that) { return b && bool (that); } \
2187	inline bool operator\|\| (bool b, const Cls &that) { return b \|\| bool (that); }
2188	#else
2189	# define WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP(Cls)
2190	#endif
2191
2192	/** @def WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP_TPL
2193	* Version of WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP for template classes.
2194	*
2195	* @param Tpl Name of the template class to apply the workaround to
2196	* @param ArgsDecl arguments of the template, as declared in \|<>\| after the
2197	* \|template\| keyword, including \|<>\|
2198	* @param Args arguments of the template, as specified in \|<>\| after the
2199	* template class name when using the, including \|<>\|
2200	*
2201	* Example:
2202	* @code
2203	* // template class declaration
2204	* template <class C>
2205	* class Foo { ... };
2206	* // applied workaround
2207	* WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP_TPL (Foo, <class C>, <C>)
2208	* @endcode
2209	*/
2210	#if defined(_MSC_VER)
2211	# define WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP_TPL(Tpl, ArgsDecl, Args) \
2212	template ArgsDecl \
2213	inline bool operator! (const Tpl Args &that) { return !bool (that); } \
2214	template ArgsDecl \
2215	inline bool operator&& (const Tpl Args &that, bool b) { return bool (that) && b; } \
2216	template ArgsDecl \
2217	inline bool operator\|\| (const Tpl Args &that, bool b) { return bool (that) \|\| b; } \
2218	template ArgsDecl \
2219	inline bool operator&& (bool b, const Tpl Args &that) { return b && bool (that); } \
2220	template ArgsDecl \
2221	inline bool operator\|\| (bool b, const Tpl Args &that) { return b \|\| bool (that); }
2222	#else
2223	# define WORKAROUND_MSVC7_ERROR_C2593_FOR_BOOL_OP_TPL(Tpl, ArgsDecl, Args)
2224	#endif
2225
2226
2227	/** @def DECLARE_CLS_COPY_CTOR_ASSIGN_NOOP
2228	* Declares the copy constructor and the assignment operation as inlined no-ops
2229	* (non-existent functions) for the given class. Use this macro inside the
2230	* private section if you want to effectively disable these operations for your
2231	* class.
2232	*
2233	* @param Cls class name to declare for
2234	*/
2235
2236	#define DECLARE_CLS_COPY_CTOR_ASSIGN_NOOP(Cls) \
2237	inline Cls (const Cls &); \
2238	inline Cls &operator= (const Cls &);
2239
2240
2241	/** @def DECLARE_CLS_NEW_DELETE_NOOP
2242	* Declares the new and delete operations as no-ops (non-existent functions)
2243	* for the given class. Use this macro inside the private section if you want
2244	* to effectively limit creating class instances on the stack only.
2245	*
2246	* @note The destructor of the given class must not be virtual, otherwise a
2247	* compile time error will occur. Note that this is not a drawback: having
2248	* the virtual destructor for a stack-based class is absolutely useless
2249	* (the real class of the stack-based instance is always known to the compiler
2250	* at compile time, so it will always call the correct destructor).
2251	*
2252	* @param Cls class name to declare for
2253	*/
2254	#define DECLARE_CLS_NEW_DELETE_NOOP(Cls) \
2255	inline static void *operator new (size_t); \
2256	inline static void operator delete (void *);
2257
2258	#endif /* __cplusplus */
2259
2260	/** @} */
2261
2262	#endif
2263

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source: vbox/trunk/include/iprt/cdefs.h@ 33692

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