* limitations under the License.
*/
-#ifndef FOLLY_PORTABILITY_H_
-#define FOLLY_PORTABILITY_H_
-
-// @nocommit invalidate ccache 20151125 (see #8764509)
+#pragma once
#include <string.h>
#include <cstddef>
-#ifndef FOLLY_NO_CONFIG
-#include <folly/folly-config.h>
-#endif
-
-#ifdef FOLLY_PLATFORM_CONFIG
-#include FOLLY_PLATFORM_CONFIG
-#endif
-
-#if FOLLY_HAVE_FEATURES_H
-#include <features.h>
-#endif
+#include <folly/portability/Config.h>
#include <folly/CPortability.h>
-#ifdef __APPLE__
-# include <malloc/malloc.h>
-#endif
-
#if FOLLY_HAVE_SCHED_H
#include <sched.h>
- #ifndef FOLLY_HAVE_PTHREAD_YIELD
- #define pthread_yield sched_yield
- #endif
-#endif
-
-#ifndef FOLLY_HAVE_UNALIGNED_READS
-#define FOLLY_HAVE_UNALIGNED_READS 0
#endif
-// A change in folly/MemoryMapping.cpp uses MAP_ANONYMOUS, which is named
-// MAP_ANON on OSX/BSD.
-#if defined(__APPLE__) || defined(__FreeBSD__)
- #include <sys/mman.h>
- #ifndef MAP_ANONYMOUS
- #ifdef MAP_ANON
- #define MAP_ANONYMOUS MAP_ANON
- #endif
- #endif
+// Unaligned loads and stores
+namespace folly {
+#if FOLLY_HAVE_UNALIGNED_ACCESS
+constexpr bool kHasUnalignedAccess = true;
+#else
+constexpr bool kHasUnalignedAccess = false;
#endif
+}
// compiler specific attribute translation
// msvc should come first, so if clang is in msvc mode it gets the right defines
# define FOLLY_DEPRECATED(msg)
#endif
-// noreturn
-#if defined(_MSC_VER)
-# define FOLLY_NORETURN __declspec(noreturn)
-#elif defined(__clang__) || defined(__GNUC__)
-# define FOLLY_NORETURN __attribute__((__noreturn__))
-#else
-# define FOLLY_NORETURN
-#endif
-
// noinline
#ifdef _MSC_VER
# define FOLLY_NOINLINE __declspec(noinline)
# define FOLLY_ALWAYS_INLINE inline
#endif
+// target
+#ifdef _MSC_VER
+# define FOLLY_TARGET_ATTRIBUTE(target)
+#else
+# define FOLLY_TARGET_ATTRIBUTE(target) __attribute__((__target__(target)))
+#endif
+
// detection for 64 bit
#if defined(__x86_64__) || defined(_M_X64)
# define FOLLY_X64 1
# error cannot define platform specific thread local storage
#endif
-#if defined(__APPLE__) && (TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE)
+#if FOLLY_MOBILE
#undef FOLLY_TLS
#endif
-// Define to 1 if you have the `preadv' and `pwritev' functions, respectively
-#if !defined(FOLLY_HAVE_PREADV) && !defined(FOLLY_HAVE_PWRITEV)
-# if defined(__GLIBC_PREREQ)
-# if __GLIBC_PREREQ(2, 10)
-# define FOLLY_HAVE_PREADV 1
-# define FOLLY_HAVE_PWRITEV 1
-# endif
-# endif
-#endif
-
// It turns out that GNU libstdc++ and LLVM libc++ differ on how they implement
// the 'std' namespace; the latter uses inline namespaces. Wrap this decision
// up in a macro to make forward-declarations easier.
# define FOLLY_GLIBCXX_NAMESPACE_CXX11_END
#endif
-// Some platforms lack clock_gettime(2) and clock_getres(2). Inject our own
-// versions of these into the global namespace.
-#if FOLLY_HAVE_CLOCK_GETTIME
-#include <time.h>
-#else
-#include <folly/detail/Clock.h>
-#endif
-
// Provide our own std::__throw_* wrappers for platforms that don't have them
#if FOLLY_HAVE_BITS_FUNCTEXCEPT_H
#include <bits/functexcept.h>
// MSVC specific defines
// mainly for posix compat
#ifdef _MSC_VER
-
-// this definition is in a really silly place with a silly name
-// and ifdefing it every time we want it is painful
-#include <basetsd.h>
-typedef SSIZE_T ssize_t;
-
-// sprintf semantics are not exactly identical
-// but current usage is not a problem
-# define snprintf _snprintf
-
-// semantics here are identical
-# define strerror_r(errno,buf,len) strerror_s(buf,len,errno)
+#include <folly/portability/SysTypes.h>
// compiler specific to compiler specific
// nolint
// Hide a GCC specific thing that breaks MSVC if left alone.
# define __extension__
-#ifdef _M_IX86_FP
-# define FOLLY_SSE _M_IX86_FP
-# define FOLLY_SSE_MINOR 0
-#endif
+// We have compiler support for the newest of the new, but
+// MSVC doesn't tell us that.
+#define __SSE4_2__ 1
#endif
#include <TargetConditionals.h>
#endif
-// MacOS doesn't have malloc_usable_size()
-#if defined(__APPLE__) && !defined(FOLLY_HAVE_MALLOC_USABLE_SIZE)
-inline size_t malloc_usable_size(void* ptr) {
- return malloc_size(ptr);
-}
-#endif
-
// RTTI may not be enabled for this compilation unit.
#if defined(__GXX_RTTI) || defined(__cpp_rtti) || \
(defined(_MSC_VER) && defined(_CPPRTTI))
# define FOLLY_HAS_RTTI 1
#endif
-#ifdef _MSC_VER
-# include <intrin.h>
-#endif
-
-namespace folly {
-
-inline void asm_volatile_memory() {
-#if defined(__clang__) || defined(__GNUC__)
- asm volatile("" : : : "memory");
-#elif defined(_MSC_VER)
- ::_ReadWriteBarrier();
-#endif
-}
-
-inline void asm_volatile_pause() {
-#if defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
- ::_mm_pause();
-#elif defined(__i386__) || FOLLY_X64
- asm volatile ("pause");
-#elif FOLLY_A64
- asm volatile ("wfe");
-#elif FOLLY_PPC64
- asm volatile("or 27,27,27");
-#endif
-}
-inline void asm_pause() {
-#if defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
- ::_mm_pause();
-#elif defined(__i386__) || FOLLY_X64
- asm ("pause");
-#elif FOLLY_A64
- asm ("wfe");
-#elif FOLLY_PPC64
- asm ("or 31,31,31");
-#endif
-}
-
#if defined(__APPLE__) || defined(_MSC_VER)
-#define MAX_STATIC_CONSTRUCTOR_PRIORITY
+#define FOLLY_STATIC_CTOR_PRIORITY_MAX
#else
// 101 is the highest priority allowed by the init_priority attribute.
// This priority is already used by JEMalloc and other memory allocators so
// we will take the next one.
-#define MAX_STATIC_CONSTRUCTOR_PRIORITY __attribute__ ((__init_priority__(102)))
+#define FOLLY_STATIC_CTOR_PRIORITY_MAX __attribute__((__init_priority__(102)))
#endif
-} // namespace folly
-#endif // FOLLY_PORTABILITY_H_
+namespace folly {
+
+#if defined(__linux__) && !FOLLY_MOBILE
+constexpr auto kIsLinux = true;
+#else
+constexpr auto kIsLinux = false;
+#endif
+}
projects / folly.git / blobdiff