/* * Copyright (c) 2008-2021 Jonathan Schleifer * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #ifndef OBJFW_MACROS_H #define OBJFW_MACROS_H #include "objfw-defs.h" #ifndef __STDC_LIMIT_MACROS # define __STDC_LIMIT_MACROS #endif #ifndef __STDC_CONSTANT_MACROS # define __STDC_CONSTANT_MACROS #endif #include #include #include #include #include #include #include #include #include "platform.h" #ifdef OF_OBJFW_RUNTIME # ifdef OF_COMPILING_OBJFW # include "ObjFWRT.h" # else # include # endif #endif #ifdef OF_APPLE_RUNTIME # include # include # include #endif #if defined(__GNUC__) # define restrict __restrict__ #elif __STDC_VERSION__ < 199901L # define restrict #endif #if __STDC_VERSION__ >= 201112L && !defined(static_assert) /* C11 compiler, but old libc */ # define static_assert _Static_assert #endif #if defined(OF_HAVE__THREAD_LOCAL) # define OF_HAVE_COMPILER_TLS # ifdef OF_HAVE_THREADS_H # include # ifdef OF_AIX /* AIX has a bug where thread_local is defined to "Thread_local;". */ # undef thread_local # define thread_local _Thread_local # endif # else # define thread_local _Thread_local # endif #elif defined(OF_HAVE___THREAD) # define OF_HAVE_COMPILER_TLS # define thread_local __thread #endif /* * Do not use compiler TLS when targeting the iOS simulator, as the iOS 9 * simulator does not support it (fails at runtime). */ #if defined(OF_HAVE_COMPILER_TLS) && defined(OF_IOS) && defined(OF_X86) # undef OF_HAVE_COMPILER_TLS #endif #ifdef __GNUC__ # define OF_INLINE inline __attribute__((__always_inline__)) # define OF_LIKELY(cond) (__builtin_expect(!!(cond), 1)) # define OF_UNLIKELY(cond) (__builtin_expect(!!(cond), 0)) # define OF_CONST_FUNC __attribute__((__const__)) # define OF_NO_RETURN_FUNC __attribute__((__noreturn__)) # define OF_WEAK_REF(sym) __attribute__((__weakref__(sym))) #else # define OF_INLINE inline # define OF_LIKELY(cond) (cond) # define OF_UNLIKELY(cond) (cond) # define OF_CONST_FUNC # define OF_NO_RETURN_FUNC # define OF_WEAK_REF(sym) #endif #if __STDC_VERSION__ >= 201112L # define OF_ALIGNOF(type) _Alignof(type) # define OF_ALIGNAS(type) _Alignas(type) #else # define OF_ALIGNOF(type) __alignof__(type) # define OF_ALIGNAS(type) __attribute__((__aligned__(__alignof__(type)))) #endif #if __STDC_VERSION__ >= 201112L && defined(OF_HAVE_MAX_ALIGN_T) # define OF_BIGGEST_ALIGNMENT _Alignof(max_align_t) #else # ifdef __BIGGEST_ALIGNMENT__ # define OF_BIGGEST_ALIGNMENT __BIGGEST_ALIGNMENT__ # else # /* Hopefully no arch needs more than 16 byte alignment */ # define OF_BIGGEST_ALIGNMENT 16 # endif #endif #define OF_PREPROCESSOR_CONCAT2(a, b) a##b #define OF_PREPROCESSOR_CONCAT(a, b) OF_PREPROCESSOR_CONCAT2(a, b) #if __OBJFW_RUNTIME_ABI__ || (defined(OF_APPLE_RUNTIME) && defined(__OBJC2__)) # define OF_HAVE_NONFRAGILE_IVARS #endif #ifdef OF_HAVE_NONFRAGILE_IVARS # define OF_RESERVE_IVARS(cls, num) #else # define OF_RESERVE_IVARS(cls, num) \ @private \ void *OF_PREPROCESSOR_CONCAT(_reserved_, cls)[num]; #endif #ifdef __GNUC__ # define OF_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) #else # define OF_GCC_VERSION 0 #endif #define OF_STRINGIFY(s) OF_STRINGIFY2(s) #define OF_STRINGIFY2(s) #s #ifndef __has_feature # define __has_feature(x) 0 #endif #ifndef __has_attribute # define __has_attribute(x) 0 #endif #if __has_feature(objc_bool) # undef YES # define YES __objc_yes # undef NO # define NO __objc_no # ifndef __cplusplus # undef true # define true ((bool)1) # undef false # define false ((bool)0) # endif #endif #if !__has_feature(objc_instancetype) # define instancetype id #endif #if __has_feature(blocks) # define OF_HAVE_BLOCKS #endif #if __has_feature(objc_arc) # define OF_RETURNS_RETAINED __attribute__((__ns_returns_retained__)) # define OF_RETURNS_NOT_RETAINED __attribute__((__ns_returns_not_retained__)) # define OF_RETURNS_INNER_POINTER \ __attribute__((__objc_returns_inner_pointer__)) # define OF_CONSUMED __attribute__((__ns_consumed__)) # define OF_WEAK_UNAVAILABLE __attribute__((__objc_arc_weak_unavailable__)) #else # define OF_RETURNS_RETAINED # define OF_RETURNS_NOT_RETAINED # define OF_RETURNS_INNER_POINTER # define OF_CONSUMED # define OF_WEAK_UNAVAILABLE /* * undef them first, as new Clang versions have these as built-in defines even * when ARC is disabled. */ # undef __unsafe_unretained # undef __bridge # undef __autoreleasing # define __unsafe_unretained # define __bridge # define __autoreleasing #endif #if __has_feature(objc_generics) # define OF_HAVE_GENERICS # define OF_GENERIC(...) <__VA_ARGS__> #else # define OF_GENERIC(...) #endif #if __has_feature(nullability) # define OF_ASSUME_NONNULL_BEGIN _Pragma("clang assume_nonnull begin") # define OF_ASSUME_NONNULL_END _Pragma("clang assume_nonnull end") # define OF_NULLABLE_PROPERTY(...) (__VA_ARGS__, nullable) # define OF_NULL_RESETTABLE_PROPERTY(...) (__VA_ARGS__, null_resettable) #else # define OF_ASSUME_NONNULL_BEGIN # define OF_ASSUME_NONNULL_END # define _Nonnull # define _Nullable # define _Null_unspecified # define OF_NULLABLE_PROPERTY # define OF_NULL_RESETTABLE_PROPERTY # define nonnull # define nullable # define null_unspecified #endif #if __has_feature(objc_kindof) # define OF_KINDOF(class_) __kindof class_ #else # define OF_KINDOF(class_) id #endif #if __has_feature(objc_class_property) # define OF_HAVE_CLASS_PROPERTIES #endif #if defined(__clang__) || OF_GCC_VERSION >= 405 # define OF_UNREACHABLE __builtin_unreachable(); #else # define OF_UNREACHABLE abort(); #endif #if defined(__clang__) || OF_GCC_VERSION >= 406 # define OF_SENTINEL __attribute__((__sentinel__)) # define OF_NO_RETURN __attribute__((__noreturn__)) #else # define OF_SENTINEL # define OF_NO_RETURN #endif #ifdef __clang__ # define OF_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__)) #else # define OF_WARN_UNUSED_RESULT #endif #if __has_attribute(__unavailable__) # define OF_UNAVAILABLE __attribute__((__unavailable__)) # define OF_HAVE_UNAVAILABLE #else # define OF_UNAVAILABLE #endif #if __has_attribute(__objc_requires_super__) # define OF_REQUIRES_SUPER __attribute__((__objc_requires_super__)) #else # define OF_REQUIRES_SUPER #endif #if __has_attribute(__objc_root_class__) # define OF_ROOT_CLASS __attribute__((__objc_root_class__)) #else # define OF_ROOT_CLASS #endif #if __has_attribute(__objc_subclassing_restricted__) # define OF_SUBCLASSING_RESTRICTED \ __attribute__((__objc_subclassing_restricted__)) #else # define OF_SUBCLASSING_RESTRICTED #endif #if __has_attribute(__objc_method_family__) # define OF_METHOD_FAMILY(f) __attribute__((__objc_method_family__(f))) #else # define OF_METHOD_FAMILY(f) #endif #if __has_attribute(__objc_designated_initializer__) # define OF_DESIGNATED_INITIALIZER \ __attribute__((__objc_designated_initializer__)) #else # define OF_DESIGNATED_INITIALIZER #endif #if __has_attribute(__objc_boxable__) # define OF_BOXABLE __attribute__((__objc_boxable__)) #else # define OF_BOXABLE #endif #if __has_attribute(__swift_name__) # define OF_SWIFT_NAME(name) __attribute__((__swift_name__(name))) #else # define OF_SWIFT_NAME(name) #endif #if __has_attribute(__objc_direct__) && defined(OF_APPLE_RUNTIME) # define OF_DIRECT __attribute__((__objc_direct__)) #else # define OF_DIRECT #endif #if __has_attribute(__objc_direct_members__) && defined(OF_APPLE_RUNTIME) # define OF_DIRECT_MEMBERS __attribute__((__objc_direct_members__)) #else # define OF_DIRECT_MEMBERS #endif #ifdef OF_APPLE_RUNTIME # if defined(OF_X86_64) || defined(OF_X86) || defined(OF_ARM64) || \ defined(OF_ARM) || defined(OF_POWERPC) # define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR # define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR_STRET # endif #else # if defined(OF_ELF) # if defined(OF_X86_64) || defined(OF_X86) || \ defined(OF_ARM64) || defined(OF_ARM) || defined(OF_POWERPC) || \ defined(OF_MIPS) || defined(OF_SPARC64) || defined(OF_SPARC) # define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR # if __OBJFW_RUNTIME_ABI__ >= 800 # define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR_STRET # endif # endif # elif defined(OF_MACH_O) # if defined(OF_X86_64) # define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR # if __OBJFW_RUNTIME_ABI__ >= 800 # define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR_STRET # endif # endif # elif defined(OF_WINDOWS) # if defined(OF_X86_64) || defined(OF_X86) # define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR # if __OBJFW_RUNTIME_ABI__ >= 800 # define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR_STRET # endif # endif # endif #endif #define OFMaxRetainCount UINT_MAX #ifdef OBJC_COMPILING_RUNTIME # define OFEnsure(cond) \ do { \ if OF_UNLIKELY (!(cond)) \ objc_error("ObjFWRT @ " __FILE__ ":" \ OF_STRINGIFY(__LINE__), \ "Failed to ensure condition:\n" #cond); \ } while(0) #else # define OFEnsure(cond) \ do { \ if OF_UNLIKELY (!(cond)) { \ fprintf(stderr, "Failed to ensure condition " \ "in " __FILE__ ":%d:\n" #cond "\n", \ __LINE__); \ abort(); \ } \ } while (0) #endif #define OF_UNRECOGNIZED_SELECTOR OFMethodNotFound(self, _cmd); #if __has_feature(objc_arc) # define OF_INVALID_INIT_METHOD OFMethodNotFound(self, _cmd); #else # define OF_INVALID_INIT_METHOD \ @try { \ OFMethodNotFound(self, _cmd); \ } @catch (id e) { \ [self release]; \ @throw e; \ } \ \ abort(); #endif #ifdef __clang__ # define OF_DEALLOC_UNSUPPORTED \ [self doesNotRecognizeSelector: _cmd]; \ \ abort(); \ \ _Pragma("clang diagnostic push ignored \"-Wunreachable-code\""); \ [super dealloc]; /* Get rid of a stupid warning */ \ _Pragma("clang diagnostic pop"); #else # define OF_DEALLOC_UNSUPPORTED \ [self doesNotRecognizeSelector: _cmd]; \ \ abort(); \ \ [super dealloc]; /* Get rid of a stupid warning */ #endif #define OF_CONSTRUCTOR(prio) \ static void __attribute__((__constructor__(prio))) \ OF_PREPROCESSOR_CONCAT(constructor, __LINE__)(void) #define OF_DESTRUCTOR(prio) \ static void __attribute__((__destructor__(prio))) \ OF_PREPROCESSOR_CONCAT(destructor, __LINE__)(void) static OF_INLINE uint16_t OF_CONST_FUNC OFByteSwap16Const(uint16_t i) { return (i & 0xFF00) >> 8 | (i & 0x00FF) << 8; } static OF_INLINE uint32_t OF_CONST_FUNC OFByteSwap32Const(uint32_t i) { return (i & 0xFF000000) >> 24 | (i & 0x00FF0000) >> 8 | (i & 0x0000FF00) << 8 | (i & 0x000000FF) << 24; } static OF_INLINE uint64_t OF_CONST_FUNC OFByteSwap64Const(uint64_t i) { return (i & 0xFF00000000000000) >> 56 | (i & 0x00FF000000000000) >> 40 | (i & 0x0000FF0000000000) >> 24 | (i & 0x000000FF00000000) >> 8 | (i & 0x00000000FF000000) << 8 | (i & 0x0000000000FF0000) << 24 | (i & 0x000000000000FF00) << 40 | (i & 0x00000000000000FF) << 56; } static OF_INLINE uint16_t OF_CONST_FUNC OFByteSwap16NonConst(uint16_t i) { #if defined(OF_HAVE_BUILTIN_BSWAP16) return __builtin_bswap16(i); #elif (defined(OF_X86_64) || defined(OF_X86)) && defined(__GNUC__) __asm__ ( "xchgb %h0, %b0" : "=Q"(i) : "0"(i) ); #elif defined(OF_POWERPC) && defined(__GNUC__) __asm__ ( "lhbrx %0, 0, %1" : "=r"(i) : "r"(&i), "m"(i) ); #elif defined(OF_ARMV6) && defined(__GNUC__) __asm__ ( "rev16 %0, %0" : "=r"(i) : "0"(i) ); #else i = (i & UINT16_C(0xFF00)) >> 8 | (i & UINT16_C(0x00FF)) << 8; #endif return i; } static OF_INLINE uint32_t OF_CONST_FUNC OFByteSwap32NonConst(uint32_t i) { #if defined(OF_HAVE_BUILTIN_BSWAP32) return __builtin_bswap32(i); #elif (defined(OF_X86_64) || defined(OF_X86)) && defined(__GNUC__) __asm__ ( "bswap %0" : "=q"(i) : "0"(i) ); #elif defined(OF_POWERPC) && defined(__GNUC__) __asm__ ( "lwbrx %0, 0, %1" : "=r"(i) : "r"(&i), "m"(i) ); #elif defined(OF_ARMV6) && defined(__GNUC__) __asm__ ( "rev %0, %0" : "=r"(i) : "0"(i) ); #else i = (i & UINT32_C(0xFF000000)) >> 24 | (i & UINT32_C(0x00FF0000)) >> 8 | (i & UINT32_C(0x0000FF00)) << 8 | (i & UINT32_C(0x000000FF)) << 24; #endif return i; } static OF_INLINE uint64_t OF_CONST_FUNC OFByteSwap64NonConst(uint64_t i) { #if defined(OF_HAVE_BUILTIN_BSWAP64) return __builtin_bswap64(i); #elif defined(OF_X86_64) && defined(__GNUC__) __asm__ ( "bswap %0" : "=r"(i) : "0"(i) ); #elif defined(OF_X86) && defined(__GNUC__) __asm__ ( "bswap %%eax\n\t" "bswap %%edx\n\t" "xchgl %%eax, %%edx" : "=A"(i) : "0"(i) ); #else i = (uint64_t)OFByteSwap32NonConst((uint32_t)(i & 0xFFFFFFFF)) << 32 | OFByteSwap32NonConst((uint32_t)(i >> 32)); #endif return i; } #ifdef __GNUC__ # define OFByteSwap16(i) \ (__builtin_constant_p(i) ? OFByteSwap16Const(i) : OFByteSwap16NonConst(i)) # define OFByteSwap32(i) \ (__builtin_constant_p(i) ? OFByteSwap32Const(i) : OFByteSwap32NonConst(i)) # define OFByteSwap64(i) \ (__builtin_constant_p(i) ? OFByteSwap64Const(i) : OFByteSwap64NonConst(i)) #else # define OFByteSwap16(i) OFByteSwap16Const(i) # define OFByteSwap32(i) OFByteSwap32Const(i) # define OFByteSwap64(i) OFByteSwap64Const(i) #endif static OF_INLINE uint32_t OFFloatToRawUInt32(float f) { uint32_t ret; memcpy(&ret, &f, 4); return ret; } static OF_INLINE float OFRawUInt32ToFloat(uint32_t uInt32) { float ret; memcpy(&ret, &uInt32, 4); return ret; } static OF_INLINE uint64_t OFDoubleToRawUInt64(double d) { uint64_t ret; memcpy(&ret, &d, 8); return ret; } static OF_INLINE double OFRawUInt64ToDouble(uint64_t uInt64) { double ret; memcpy(&ret, &uInt64, 8); return ret; } static OF_INLINE float OF_CONST_FUNC OFByteSwapFloat(float f) { return OFRawUInt32ToFloat(OFByteSwap32(OFFloatToRawUInt32(f))); } static OF_INLINE double OF_CONST_FUNC OFByteSwapDouble(double d) { return OFRawUInt64ToDouble(OFByteSwap64(OFDoubleToRawUInt64(d))); } #ifdef OF_BIG_ENDIAN # define OFFromBigEndian16(i) (i) # define OFFromBigEndian32(i) (i) # define OFFromBigEndian64(i) (i) # define OFFromLittleEndian16(i) OFByteSwap16(i) # define OFFromLittleEndian32(i) OFByteSwap32(i) # define OFFromLittleEndian64(i) OFByteSwap64(i) # define OFToBigEndian16(i) (i) # define OFToBigEndian32(i) (i) # define OFToBigEndian64(i) (i) # define OFToLittleEndian16(i) OFByteSwap16(i) # define OFToLittleEndian32(i) OFByteSwap32(i) # define OFToLittleEndian64(i) OFByteSwap64(i) #else # define OFFromBigEndian16(i) OFByteSwap16(i) # define OFFromBigEndian32(i) OFByteSwap32(i) # define OFFromBigEndian64(i) OFByteSwap64(i) # define OFFromLittleEndian16(i) (i) # define OFFromLittleEndian32(i) (i) # define OFFromLittleEndian64(i) (i) # define OFToBigEndian16(i) OFByteSwap16(i) # define OFToBigEndian32(i) OFByteSwap32(i) # define OFToBigEndian64(i) OFByteSwap64(i) # define OFToLittleEndian16(i) (i) # define OFToLittleEndian32(i) (i) # define OFToLittleEndian64(i) (i) #endif #ifdef OF_FLOAT_BIG_ENDIAN # define OFFromBigEndianFloat(f) (f) # define OFFromBigEndianDouble(d) (d) # define OFFromLittleEndianFloat(f) OFByteSwapFloat(f) # define OFFromLittleEndianDouble(i) OFByteSwapDouble(d) # define OFToBigEndianFloat(f) (f) # define OFToBigEndianDouble(d) (d) # define OFToLittleEndianFloat(f) OFByteSwapFloat(f) # define OFToLittleEndianDouble(i) OFByteSwapDouble(d) #else # define OFFromBigEndianFloat(f) OFByteSwapFloat(f) # define OFFromBigEndianDouble(d) OFByteSwapDouble(d) # define OFFromLittleEndianFloat(f) (f) # define OFFromLittleEndianDouble(d) (d) # define OFToBigEndianFloat(f) OFByteSwapFloat(f) # define OFToBigEndianDouble(d) OFByteSwapDouble(d) # define OFToLittleEndianFloat(f) (f) # define OFToLittleEndianDouble(d) (d) #endif #define OFRotateLeft(value, bits) \ (((bits) % (sizeof(value) * 8)) > 0 \ ? ((value) << ((bits) % (sizeof(value) * 8))) | \ ((value) >> (sizeof(value) * 8 - ((bits) % (sizeof(value) * 8)))) \ : (value)) #define OFRotateRight(value, bits) \ (((bits) % (sizeof(value) * 8)) > 0 \ ? ((value) >> ((bits) % (sizeof(value) * 8))) | \ ((value) << (sizeof(value) * 8 - ((bits) % (sizeof(value) * 8)))) \ : (value)) #define OFRoundUpToPowerOf2(pow2, value) \ (((value) + (pow2) - 1) & ~((pow2) - 1)) extern unsigned long OFHashSeed; static OF_INLINE void OFHashInit(unsigned long *_Nonnull hash) { *hash = OFHashSeed; } static OF_INLINE void OFHashAdd(unsigned long *_Nonnull hash, unsigned char byte) { uint32_t tmp = (uint32_t)*hash; tmp += byte; tmp += tmp << 10; tmp ^= tmp >> 6; *hash = tmp; } static OF_INLINE void OFHashAddHash(unsigned long *_Nonnull hash, unsigned long otherHash) { OFHashAdd(hash, (otherHash >> 24) & 0xFF); OFHashAdd(hash, (otherHash >> 16) & 0xFF); OFHashAdd(hash, (otherHash >> 8) & 0xFF); OFHashAdd(hash, otherHash & 0xFF); } static OF_INLINE void OFHashFinalize(unsigned long *_Nonnull hash) { uint32_t tmp = (uint32_t)*hash; tmp += tmp << 3; tmp ^= tmp >> 11; tmp += tmp << 15; *hash = tmp; } static OF_INLINE bool OFBitsetIsSet(unsigned char *_Nonnull storage, size_t idx) { return storage[idx / CHAR_BIT] & (1u << (idx % CHAR_BIT)); } static OF_INLINE void OFBitsetSet(unsigned char *_Nonnull storage, size_t idx) { storage[idx / CHAR_BIT] |= (1u << (idx % CHAR_BIT)); } static OF_INLINE void OFBitsetClear(unsigned char *_Nonnull storage, size_t idx) { storage[idx / CHAR_BIT] &= ~(1u << (idx % CHAR_BIT)); } static OF_INLINE char *_Nullable OFStrdup(const char *_Nonnull string) { char *copy; size_t length = strlen(string); if ((copy = (char *)malloc(length + 1)) == NULL) return NULL; memcpy(copy, string, length + 1); return copy; } static OF_INLINE void OFZeroMemory(void *_Nonnull buffer_, size_t length) { volatile unsigned char *buffer = (volatile unsigned char *)buffer_; while (buffer < (unsigned char *)buffer_ + length) *buffer++ = '\0'; } static OF_INLINE bool OFASCIIIsAlpha(char c) { return ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')); } static OF_INLINE bool OFASCIIIsDigit(char c) { return (c >= '0' && c <= '9'); } static OF_INLINE bool OFASCIIIsAlnum(char c) { return (OFASCIIIsAlpha(c) || OFASCIIIsDigit(c)); } static OF_INLINE bool OFASCIIIsSpace(char c) { return (c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\f' || c == '\v'); } static OF_INLINE char OFASCIIToUpper(char c) { return (c >= 'a' && c <= 'z' ? 'A' + (c - 'a') : c); } static OF_INLINE char OFASCIIToLower(char c) { return (c >= 'A' && c <= 'Z' ? 'a' + (c - 'A') : c); } #endif