opt proxygen with newly added OpenSSL functions

[folly.git] / folly / Portability.h

diff --git a/folly/Portability.h b/folly/Portability.h
index 7f88cf25e4ee1c3e1112b8dd14f3c00c42632e89..fbd8e3aba8786fab5297c0073e5fa5b459c1df0e 100644 (file)
--- a/folly/Portability.h
+++ b/folly/Portability.h
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -18,14 +18,22 @@
 #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>
@@ -47,7 +55,7 @@
 
 // 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
@@ -60,6 +68,7 @@ struct MaxAlign { char c; } __attribute__((aligned));
 # 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_
@@ -67,14 +76,21 @@ struct MaxAlign { char c; } __attribute__((aligned));
 #else
 # define FOLLY_PRINTF_FORMAT /**/
 # define FOLLY_PRINTF_FORMAT_ATTR(format_param, dots_param) \
-  __attribute__((format(printf, format_param, dots_param)))
+  __attribute__((__format__(__printf__, format_param, dots_param)))
+#endif
+
+// deprecated
+#if defined(__clang__) || defined(__GNUC__)
+# 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))
+# define FOLLY_NORETURN __attribute__((__noreturn__))
 #else
 # define FOLLY_NORETURN
 #endif
@@ -83,7 +99,7 @@ struct MaxAlign { char c; } __attribute__((aligned));
 #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
@@ -92,7 +108,7 @@ struct MaxAlign { char c; } __attribute__((aligned));
 #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
@@ -104,13 +120,19 @@ struct MaxAlign { char c; } __attribute__((aligned));
 # 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_ATTR __attribute__((__packed__))
 # define FOLLY_PACK_PUSH /**/
 # define FOLLY_PACK_POP /**/
 #else
@@ -122,9 +144,11 @@ struct MaxAlign { char c; } __attribute__((aligned));
 // 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
@@ -145,7 +169,8 @@ struct MaxAlign { char c; } __attribute__((aligned));
 /* Platform specific TLS support
  * gcc implements __thread
  * msvc implements __declspec(thread)
- * the semantics are the same (but remember __thread is broken on apple)
+ * 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)
@@ -169,6 +194,7 @@ struct MaxAlign { char c; } __attribute__((aligned));
 // 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
@@ -230,7 +256,51 @@ typedef SSIZE_T ssize_t;
 # 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_