/*
- * 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.
#include <folly/CPortability.h>
+#ifdef __APPLE__
+# include <malloc/malloc.h>
+#endif
+
#if FOLLY_HAVE_SCHED_H
#include <sched.h>
#ifndef FOLLY_HAVE_PTHREAD_YIELD
# 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_
__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)
# 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 /**/
// 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
/* 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)
# define strerror_r(errno,buf,len) strerror_s(buf,len,errno)
// compiler specific to compiler specific
+// nolint
# define __PRETTY_FUNCTION__ __FUNCSIG__
#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)
+# 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_