/*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2015 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#define FOLLY_PORTABILITY_H_
#ifndef FOLLY_NO_CONFIG
-#include "folly-config.h"
+#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 "CPortability.h"
+#include <folly/CPortability.h>
+
+#ifdef __APPLE__
+# include <malloc/malloc.h>
+#endif
#if FOLLY_HAVE_SCHED_H
#include <sched.h>
#endif
#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
+#endif
// MaxAlign: max_align_t isn't supported by gcc
#ifdef __GNUC__
-struct MaxAlign { char c; } __attribute__((aligned));
+struct MaxAlign { char c; } __attribute__((__aligned__));
#else /* !__GNUC__ */
# error Cannot define MaxAlign on this platform
#endif
+// compiler specific attribute translation
+// msvc should come first, so if clang is in msvc mode it gets the right defines
-// noreturn
+// NOTE: this will only do checking in msvc with versions that support /analyze
+#if _MSC_VER
+# ifdef _USE_ATTRIBUTES_FOR_SAL
+# undef _USE_ATTRIBUTES_FOR_SAL
+# endif
+/* nolint */
+# define _USE_ATTRIBUTES_FOR_SAL 1
+# include <sal.h>
+# define FOLLY_PRINTF_FORMAT _Printf_format_string_
+# define FOLLY_PRINTF_FORMAT_ATTR(format_param, dots_param) /**/
+#else
+# define FOLLY_PRINTF_FORMAT /**/
+# define FOLLY_PRINTF_FORMAT_ATTR(format_param, dots_param) \
+ __attribute__((__format__(__printf__, format_param, dots_param)))
+#endif
+
+// deprecated
#if defined(__clang__) || defined(__GNUC__)
-# define FOLLY_NORETURN __attribute__((noreturn))
+# define FOLLY_DEPRECATED(msg) __attribute__((__deprecated__(msg)))
+#else
+# define FOLLY_DEPRECATED
+#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
#ifdef _MSC_VER
# define FOLLY_NOINLINE __declspec(noinline)
#elif defined(__clang__) || defined(__GNUC__)
-# define FOLLY_NOINLINE __attribute__((noinline))
+# define FOLLY_NOINLINE __attribute__((__noinline__))
#else
# define FOLLY_NOINLINE
#endif
#ifdef _MSC_VER
# define FOLLY_ALWAYS_INLINE __forceinline
#elif defined(__clang__) || defined(__GNUC__)
-# define FOLLY_ALWAYS_INLINE inline __attribute__((always_inline))
+# define FOLLY_ALWAYS_INLINE inline __attribute__((__always_inline__))
#else
# define FOLLY_ALWAYS_INLINE
#endif
+// detection for 64 bit
+#if defined(__x86_64__) || defined(_M_X64)
+# define FOLLY_X64 1
+#else
+# define FOLLY_X64 0
+#endif
+
+#if defined(__aarch64__)
+# define FOLLY_A64 1
+#else
+# define FOLLY_A64 0
+#endif
+
+// packing is very ugly in msvc
+#ifdef _MSC_VER
+# define FOLLY_PACK_ATTR /**/
+# define FOLLY_PACK_PUSH __pragma(pack(push, 1))
+# define FOLLY_PACK_POP __pragma(pack(pop))
+#elif defined(__clang__) || defined(__GNUC__)
+# define FOLLY_PACK_ATTR __attribute__((__packed__))
+# define FOLLY_PACK_PUSH /**/
+# define FOLLY_PACK_POP /**/
+#else
+# define FOLLY_PACK_ATTR /**/
+# define FOLLY_PACK_PUSH /**/
+# define FOLLY_PACK_POP /**/
+#endif
+
// portable version check
#ifndef __GNUC_PREREQ
# if defined __GNUC__ && defined __GNUC_MINOR__
+/* nolint */
# define __GNUC_PREREQ(maj, min) ((__GNUC__ << 16) + __GNUC_MINOR__ >= \
((maj) << 16) + (min))
# else
+/* nolint */
# define __GNUC_PREREQ(maj, min) 0
# endif
#endif
# endif
#endif
+/* Platform specific TLS support
+ * gcc implements __thread
+ * msvc implements __declspec(thread)
+ * the semantics are the same
+ * (but remember __thread has different semantics when using emutls (ex. apple))
+ */
+#if defined(_MSC_VER)
+# define FOLLY_TLS __declspec(thread)
+#elif defined(__GNUC__) || defined(__clang__)
+# define FOLLY_TLS __thread
+#else
+# error cannot define platform specific thread local storage
+#endif
// Define to 1 if you have the `preadv' and `pwritev' functions, respectively
#if !defined(FOLLY_HAVE_PREADV) && !defined(FOLLY_HAVE_PWRITEV)
// the 'std' namespace; the latter uses inline namepsaces. Wrap this decision
// up in a macro to make forward-declarations easier.
#if FOLLY_USE_LIBCPP
+#include <__config>
#define FOLLY_NAMESPACE_STD_BEGIN _LIBCPP_BEGIN_NAMESPACE_STD
#define FOLLY_NAMESPACE_STD_END _LIBCPP_END_NAMESPACE_STD
#else
#if FOLLY_HAVE_CLOCK_GETTIME
#include <time.h>
#else
-#include "folly/detail/Clock.h"
+#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>
#else
-#include "folly/detail/FunctionalExcept.h"
+#include <folly/detail/FunctionalExcept.h>
#endif
#if defined(__cplusplus)
#endif
#endif // __cplusplus
+// 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)
+
+// compiler specific to compiler specific
+// nolint
+# define __PRETTY_FUNCTION__ __FUNCSIG__
+#endif
+
+#if FOLLY_UNUSUAL_GFLAGS_NAMESPACE
+namespace FOLLY_GFLAGS_NAMESPACE { }
+namespace gflags {
+using namespace FOLLY_GFLAGS_NAMESPACE;
+} // namespace gflags
+#endif
+
+// for TARGET_OS_IPHONE
+#ifdef __APPLE__
+#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)
+# define FOLLY_HAS_RTTI 1
+#endif
+
+namespace folly {
+
+inline void asm_volatile_pause() {
+#if defined(__i386__) || FOLLY_X64
+ asm volatile ("pause");
+#elif FOLLY_A64
+ asm volatile ("wfe");
+#endif
+}
+inline void asm_pause() {
+#if defined(__i386__) || FOLLY_X64
+ asm ("pause");
+#elif FOLLY_A64
+ asm ("wfe");
+#endif
+}
+
+}
+
#endif // FOLLY_PORTABILITY_H_
projects / folly.git / blobdiff