OwlCyberSecurity - MANAGER

Edit File: v8config.h

// Copyright 2013 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef V8CONFIG_H_ #define V8CONFIG_H_ // clang-format off // Platform headers for feature detection below. #if defined(__ANDROID__) # include <sys/cdefs.h> #elif defined(__APPLE__) # include <TargetConditionals.h> #elif defined(__linux__) # include <features.h> #endif // This macro allows to test for the version of the GNU C library (or // a compatible C library that masquerades as glibc). It evaluates to // 0 if libc is not GNU libc or compatible. // Use like: // #if V8_GLIBC_PREREQ(2, 3) // ... // #endif #if defined(__GLIBC__) && defined(__GLIBC_MINOR__) # define V8_GLIBC_PREREQ(major, minor) \ ((__GLIBC__ * 100 + __GLIBC_MINOR__) >= ((major) * 100 + (minor))) #else # define V8_GLIBC_PREREQ(major, minor) 0 #endif // This macro allows to test for the version of the GNU C++ compiler. // Note that this also applies to compilers that masquerade as GCC, // for example clang and the Intel C++ compiler for Linux. // Use like: // #if V8_GNUC_PREREQ(4, 3, 1) // ... // #endif #if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) # define V8_GNUC_PREREQ(major, minor, patchlevel) \ ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= \ ((major) * 10000 + (minor) * 100 + (patchlevel))) #elif defined(__GNUC__) && defined(__GNUC_MINOR__) # define V8_GNUC_PREREQ(major, minor, patchlevel) \ ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100) >= \ ((major) * 10000 + (minor) * 100 + (patchlevel))) #else # define V8_GNUC_PREREQ(major, minor, patchlevel) 0 #endif // ----------------------------------------------------------------------------- // Operating system detection // // V8_OS_ANDROID - Android // V8_OS_BSD - BSDish (Mac OS X, Net/Free/Open/DragonFlyBSD) // V8_OS_CYGWIN - Cygwin // V8_OS_DRAGONFLYBSD - DragonFlyBSD // V8_OS_FREEBSD - FreeBSD // V8_OS_FUCHSIA - Fuchsia // V8_OS_LINUX - Linux // V8_OS_MACOSX - Mac OS X // V8_OS_NETBSD - NetBSD // V8_OS_OPENBSD - OpenBSD // V8_OS_POSIX - POSIX compatible (mostly everything except Windows) // V8_OS_QNX - QNX Neutrino // V8_OS_SOLARIS - Sun Solaris and OpenSolaris // V8_OS_AIX - AIX // V8_OS_WIN - Microsoft Windows #if defined(__ANDROID__) # define V8_OS_ANDROID 1 # define V8_OS_LINUX 1 # define V8_OS_POSIX 1 #elif defined(__APPLE__) # define V8_OS_BSD 1 # define V8_OS_MACOSX 1 # define V8_OS_POSIX 1 #elif defined(__CYGWIN__) # define V8_OS_CYGWIN 1 # define V8_OS_POSIX 1 #elif defined(__linux__) # define V8_OS_LINUX 1 # define V8_OS_POSIX 1 #elif defined(__sun) # define V8_OS_POSIX 1 # define V8_OS_SOLARIS 1 #elif defined(_AIX) #define V8_OS_POSIX 1 #define V8_OS_AIX 1 #elif defined(__FreeBSD__) # define V8_OS_BSD 1 # define V8_OS_FREEBSD 1 # define V8_OS_POSIX 1 #elif defined(__Fuchsia__) # define V8_OS_FUCHSIA 1 # define V8_OS_POSIX 1 #elif defined(__DragonFly__) # define V8_OS_BSD 1 # define V8_OS_DRAGONFLYBSD 1 # define V8_OS_POSIX 1 #elif defined(__NetBSD__) # define V8_OS_BSD 1 # define V8_OS_NETBSD 1 # define V8_OS_POSIX 1 #elif defined(__OpenBSD__) # define V8_OS_BSD 1 # define V8_OS_OPENBSD 1 # define V8_OS_POSIX 1 #elif defined(__QNXNTO__) # define V8_OS_POSIX 1 # define V8_OS_QNX 1 #elif defined(_WIN32) # define V8_OS_WIN 1 #endif // ----------------------------------------------------------------------------- // C library detection // // V8_LIBC_MSVCRT - MSVC libc // V8_LIBC_BIONIC - Bionic libc // V8_LIBC_BSD - BSD libc derivate // V8_LIBC_GLIBC - GNU C library // V8_LIBC_UCLIBC - uClibc // // Note that testing for libc must be done using #if not #ifdef. For example, // to test for the GNU C library, use: // #if V8_LIBC_GLIBC // ... // #endif #if defined (_MSC_VER) # define V8_LIBC_MSVCRT 1 #elif defined(__BIONIC__) # define V8_LIBC_BIONIC 1 # define V8_LIBC_BSD 1 #elif defined(__UCLIBC__) // Must test for UCLIBC before GLIBC, as UCLIBC pretends to be GLIBC. # define V8_LIBC_UCLIBC 1 #elif defined(__GLIBC__) || defined(__GNU_LIBRARY__) # define V8_LIBC_GLIBC 1 #else # define V8_LIBC_BSD V8_OS_BSD #endif // ----------------------------------------------------------------------------- // Compiler detection // // V8_CC_GNU - GCC, or clang in gcc mode // V8_CC_INTEL - Intel C++ // V8_CC_MINGW - Minimalist GNU for Windows // V8_CC_MINGW32 - Minimalist GNU for Windows (mingw32) // V8_CC_MINGW64 - Minimalist GNU for Windows (mingw-w64) // V8_CC_MSVC - Microsoft Visual C/C++, or clang in cl.exe mode // // C++11 feature detection // // V8_HAS_CXX11_ALIGNAS - alignas specifier supported // V8_HAS_CXX11_ALIGNOF - alignof(type) operator supported // // Compiler-specific feature detection // // V8_HAS___ALIGNOF - __alignof(type) operator supported // V8_HAS___ALIGNOF__ - __alignof__(type) operator supported // V8_HAS_ATTRIBUTE_ALIGNED - __attribute__((aligned(n))) supported // V8_HAS_ATTRIBUTE_ALWAYS_INLINE - __attribute__((always_inline)) // supported // V8_HAS_ATTRIBUTE_DEPRECATED - __attribute__((deprecated)) supported // V8_HAS_ATTRIBUTE_NOINLINE - __attribute__((noinline)) supported // V8_HAS_ATTRIBUTE_UNUSED - __attribute__((unused)) supported // V8_HAS_ATTRIBUTE_VISIBILITY - __attribute__((visibility)) supported // V8_HAS_ATTRIBUTE_WARN_UNUSED_RESULT - __attribute__((warn_unused_result)) // supported // V8_HAS_BUILTIN_BSWAP16 - __builtin_bswap16() supported // V8_HAS_BUILTIN_BSWAP32 - __builtin_bswap32() supported // V8_HAS_BUILTIN_BSWAP64 - __builtin_bswap64() supported // V8_HAS_BUILTIN_CLZ - __builtin_clz() supported // V8_HAS_BUILTIN_CTZ - __builtin_ctz() supported // V8_HAS_BUILTIN_EXPECT - __builtin_expect() supported // V8_HAS_BUILTIN_FRAME_ADDRESS - __builtin_frame_address() supported // V8_HAS_BUILTIN_POPCOUNT - __builtin_popcount() supported // V8_HAS_BUILTIN_SADD_OVERFLOW - __builtin_sadd_overflow() supported // V8_HAS_BUILTIN_SSUB_OVERFLOW - __builtin_ssub_overflow() supported // V8_HAS_BUILTIN_UADD_OVERFLOW - __builtin_uadd_overflow() supported // V8_HAS_DECLSPEC_ALIGN - __declspec(align(n)) supported // V8_HAS_DECLSPEC_DEPRECATED - __declspec(deprecated) supported // V8_HAS_DECLSPEC_NOINLINE - __declspec(noinline) supported // V8_HAS_DECLSPEC_SELECTANY - __declspec(selectany) supported // V8_HAS_DECLSPEC_NORETURN - __declspec(noreturn) supported // V8_HAS___FORCEINLINE - __forceinline supported // // Note that testing for compilers and/or features must be done using #if // not #ifdef. For example, to test for Intel C++ Compiler, use: // #if V8_CC_INTEL // ... // #endif #if defined(__clang__) #if defined(__GNUC__) // Clang in gcc mode. # define V8_CC_GNU 1 #endif // Clang defines __alignof__ as alias for __alignof # define V8_HAS___ALIGNOF 1 # define V8_HAS___ALIGNOF__ V8_HAS___ALIGNOF # define V8_HAS_ATTRIBUTE_ALIGNED (__has_attribute(aligned)) # define V8_HAS_ATTRIBUTE_ALWAYS_INLINE (__has_attribute(always_inline)) # define V8_HAS_ATTRIBUTE_DEPRECATED (__has_attribute(deprecated)) # define V8_HAS_ATTRIBUTE_NOINLINE (__has_attribute(noinline)) # define V8_HAS_ATTRIBUTE_UNUSED (__has_attribute(unused)) # define V8_HAS_ATTRIBUTE_VISIBILITY (__has_attribute(visibility)) # define V8_HAS_ATTRIBUTE_WARN_UNUSED_RESULT \ (__has_attribute(warn_unused_result)) # define V8_HAS_BUILTIN_BSWAP16 (__has_builtin(__builtin_bswap16)) # define V8_HAS_BUILTIN_BSWAP32 (__has_builtin(__builtin_bswap32)) # define V8_HAS_BUILTIN_BSWAP64 (__has_builtin(__builtin_bswap64)) # define V8_HAS_BUILTIN_CLZ (__has_builtin(__builtin_clz)) # define V8_HAS_BUILTIN_CTZ (__has_builtin(__builtin_ctz)) # define V8_HAS_BUILTIN_EXPECT (__has_builtin(__builtin_expect)) # define V8_HAS_BUILTIN_FRAME_ADDRESS (__has_builtin(__builtin_frame_address)) # define V8_HAS_BUILTIN_POPCOUNT (__has_builtin(__builtin_popcount)) # define V8_HAS_BUILTIN_SADD_OVERFLOW (__has_builtin(__builtin_sadd_overflow)) # define V8_HAS_BUILTIN_SSUB_OVERFLOW (__has_builtin(__builtin_ssub_overflow)) # define V8_HAS_BUILTIN_UADD_OVERFLOW (__has_builtin(__builtin_uadd_overflow)) # define V8_HAS_CXX11_ALIGNAS (__has_feature(cxx_alignas)) #elif defined(__GNUC__) # define V8_CC_GNU 1 # if defined(__INTEL_COMPILER) // Intel C++ also masquerades as GCC 3.2.0 # define V8_CC_INTEL 1 # endif # if defined(__MINGW32__) # define V8_CC_MINGW32 1 # endif # if defined(__MINGW64__) # define V8_CC_MINGW64 1 # endif # define V8_CC_MINGW (V8_CC_MINGW32 || V8_CC_MINGW64) # define V8_HAS___ALIGNOF__ (V8_GNUC_PREREQ(4, 3, 0)) # define V8_HAS_ATTRIBUTE_ALIGNED (V8_GNUC_PREREQ(2, 95, 0)) // always_inline is available in gcc 4.0 but not very reliable until 4.4. // Works around "sorry, unimplemented: inlining failed" build errors with // older compilers. # define V8_HAS_ATTRIBUTE_ALWAYS_INLINE (V8_GNUC_PREREQ(4, 4, 0)) # define V8_HAS_ATTRIBUTE_DEPRECATED (V8_GNUC_PREREQ(3, 4, 0)) # define V8_HAS_ATTRIBUTE_DEPRECATED_MESSAGE (V8_GNUC_PREREQ(4, 5, 0)) # define V8_HAS_ATTRIBUTE_NOINLINE (V8_GNUC_PREREQ(3, 4, 0)) # define V8_HAS_ATTRIBUTE_UNUSED (V8_GNUC_PREREQ(2, 95, 0)) # define V8_HAS_ATTRIBUTE_VISIBILITY (V8_GNUC_PREREQ(4, 3, 0)) # define V8_HAS_ATTRIBUTE_WARN_UNUSED_RESULT \ (!V8_CC_INTEL && V8_GNUC_PREREQ(4, 1, 0)) # define V8_HAS_BUILTIN_CLZ (V8_GNUC_PREREQ(3, 4, 0)) # define V8_HAS_BUILTIN_CTZ (V8_GNUC_PREREQ(3, 4, 0)) # define V8_HAS_BUILTIN_EXPECT (V8_GNUC_PREREQ(2, 96, 0)) # define V8_HAS_BUILTIN_FRAME_ADDRESS (V8_GNUC_PREREQ(2, 96, 0)) # define V8_HAS_BUILTIN_POPCOUNT (V8_GNUC_PREREQ(3, 4, 0)) # if __cplusplus >= 201103L # define V8_HAS_CXX11_ALIGNAS (V8_GNUC_PREREQ(4, 8, 0)) # define V8_HAS_CXX11_ALIGNOF (V8_GNUC_PREREQ(4, 8, 0)) # endif #endif #if defined(_MSC_VER) # define V8_CC_MSVC 1 # define V8_HAS___ALIGNOF 1 # define V8_HAS_DECLSPEC_ALIGN 1 # define V8_HAS_DECLSPEC_DEPRECATED 1 # define V8_HAS_DECLSPEC_NOINLINE 1 # define V8_HAS_DECLSPEC_SELECTANY 1 # define V8_HAS_DECLSPEC_NORETURN 1 # define V8_HAS___FORCEINLINE 1 #endif // ----------------------------------------------------------------------------- // Helper macros // A macro used to make better inlining. Don't bother for debug builds. // Use like: // V8_INLINE int GetZero() { return 0; } #if !defined(DEBUG) && V8_HAS_ATTRIBUTE_ALWAYS_INLINE # define V8_INLINE inline __attribute__((always_inline)) #elif !defined(DEBUG) && V8_HAS___FORCEINLINE # define V8_INLINE __forceinline #else # define V8_INLINE inline #endif // A macro used to tell the compiler to never inline a particular function. // Don't bother for debug builds. // Use like: // V8_NOINLINE int GetMinusOne() { return -1; } #if !defined(DEBUG) && V8_HAS_ATTRIBUTE_NOINLINE # define V8_NOINLINE __attribute__((noinline)) #elif !defined(DEBUG) && V8_HAS_DECLSPEC_NOINLINE # define V8_NOINLINE __declspec(noinline) #else # define V8_NOINLINE /* NOT SUPPORTED */ #endif // A macro (V8_DEPRECATED) to mark classes or functions as deprecated. #if defined(V8_DEPRECATION_WARNINGS) && V8_HAS_ATTRIBUTE_DEPRECATED_MESSAGE #define V8_DEPRECATED(message, declarator) \ declarator __attribute__((deprecated(message))) #elif defined(V8_DEPRECATION_WARNINGS) && V8_HAS_ATTRIBUTE_DEPRECATED #define V8_DEPRECATED(message, declarator) \ declarator __attribute__((deprecated)) #elif defined(V8_DEPRECATION_WARNINGS) && V8_HAS_DECLSPEC_DEPRECATED #define V8_DEPRECATED(message, declarator) __declspec(deprecated) declarator #else #define V8_DEPRECATED(message, declarator) declarator #endif // A macro (V8_DEPRECATE_SOON) to make it easier to see what will be deprecated. #if defined(V8_IMMINENT_DEPRECATION_WARNINGS) && \ V8_HAS_ATTRIBUTE_DEPRECATED_MESSAGE #define V8_DEPRECATE_SOON(message, declarator) \ declarator __attribute__((deprecated(message))) #elif defined(V8_IMMINENT_DEPRECATION_WARNINGS) && V8_HAS_ATTRIBUTE_DEPRECATED #define V8_DEPRECATE_SOON(message, declarator) \ declarator __attribute__((deprecated)) #elif defined(V8_IMMINENT_DEPRECATION_WARNINGS) && V8_HAS_DECLSPEC_DEPRECATED #define V8_DEPRECATE_SOON(message, declarator) __declspec(deprecated) declarator #else #define V8_DEPRECATE_SOON(message, declarator) declarator #endif // A macro to provide the compiler with branch prediction information. #if V8_HAS_BUILTIN_EXPECT # define V8_UNLIKELY(condition) (__builtin_expect(!!(condition), 0)) # define V8_LIKELY(condition) (__builtin_expect(!!(condition), 1)) #else # define V8_UNLIKELY(condition) (condition) # define V8_LIKELY(condition) (condition) #endif // This macro allows to specify memory alignment for structs, classes, etc. // Use like: // class V8_ALIGNED(16) MyClass { ... }; // V8_ALIGNED(32) int array[42]; #if V8_HAS_CXX11_ALIGNAS # define V8_ALIGNED(n) alignas(n) #elif V8_HAS_ATTRIBUTE_ALIGNED # define V8_ALIGNED(n) __attribute__((aligned(n))) #elif V8_HAS_DECLSPEC_ALIGN # define V8_ALIGNED(n) __declspec(align(n)) #else # define V8_ALIGNED(n) /* NOT SUPPORTED */ #endif // This macro is similar to V8_ALIGNED(), but takes a type instead of size // in bytes. If the compiler does not supports using the alignment of the // |type|, it will align according to the |alignment| instead. For example, // Visual Studio C++ cannot combine __declspec(align) and __alignof. The // |alignment| must be a literal that is used as a kind of worst-case fallback // alignment. // Use like: // struct V8_ALIGNAS(AnotherClass, 16) NewClass { ... }; // V8_ALIGNAS(double, 8) int array[100]; #if V8_HAS_CXX11_ALIGNAS # define V8_ALIGNAS(type, alignment) alignas(type) #elif V8_HAS___ALIGNOF__ && V8_HAS_ATTRIBUTE_ALIGNED # define V8_ALIGNAS(type, alignment) __attribute__((aligned(__alignof__(type)))) #else # define V8_ALIGNAS(type, alignment) V8_ALIGNED(alignment) #endif // This macro returns alignment in bytes (an integer power of two) required for // any instance of the given type, which is either complete type, an array type, // or a reference type. // Use like: // size_t alignment = V8_ALIGNOF(double); #if V8_HAS_CXX11_ALIGNOF # define V8_ALIGNOF(type) alignof(type) #elif V8_HAS___ALIGNOF # define V8_ALIGNOF(type) __alignof(type) #elif V8_HAS___ALIGNOF__ # define V8_ALIGNOF(type) __alignof__(type) #else // Note that alignment of a type within a struct can be less than the // alignment of the type stand-alone (because of ancient ABIs), so this // should only be used as a last resort. namespace v8 { template <typename T> class AlignOfHelper { char c; T t; }; } # define V8_ALIGNOF(type) (sizeof(::v8::AlignOfHelper<type>) - sizeof(type)) #endif // Annotate a function indicating the caller must examine the return value. // Use like: // int foo() V8_WARN_UNUSED_RESULT; #if V8_HAS_ATTRIBUTE_WARN_UNUSED_RESULT #define V8_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) #else #define V8_WARN_UNUSED_RESULT /* NOT SUPPORTED */ #endif // clang-format on #endif // V8CONFIG_H_