native_client/src/include/nacl_compiler_annotations.h at e7a867bf42da4fd49c42603b70724606b1f62ca0 · DaemonEngine/native_client · GitHub

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/*
 * Copyright (c) 2011 The Native Client 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 NATIVE_CLIENT_SRC_INCLUDE_NACL_COMPILER_ANNOTATIONS_H_
#define NATIVE_CLIENT_SRC_INCLUDE_NACL_COMPILER_ANNOTATIONS_H_

#include "native_client/src/include/build_config.h"

/* MSVC supports "inline" only in C++ */
#if defined(_MSC_VER)
# define INLINE __forceinline
#else
# define INLINE __inline__
#endif

#if NACL_WINDOWS
# define DLLEXPORT __declspec(dllexport)
#elif NACL_LINUX || NACL_OSX
# define DLLEXPORT __attribute__ ((visibility("default")))
#elif defined(__native_client__)
/* do nothing */
#else
# error "what platform?"
#endif

#if NACL_WINDOWS
# define ATTRIBUTE_FORMAT_PRINTF(m, n)
#else
# define ATTRIBUTE_FORMAT_PRINTF(m, n) __attribute__((format(printf, m, n)))
#endif

#if NACL_WINDOWS
# define UNREFERENCED_PARAMETER(P) (P)
#else
# define UNREFERENCED_PARAMETER(P) do { (void) P; } while (0)
#endif

#if NACL_WINDOWS
# define IGNORE_RESULT(x) (x)
#else
# define IGNORE_RESULT(x) \
  do { __typeof__(x) z = x; (void) sizeof z; } while (0)
#endif

#if NACL_WINDOWS
# define NORETURN __declspec(noreturn)
# define NORETURN_PTR /* No way to declare it for a function pointer.  */
#else
# define NORETURN __attribute__((noreturn))  /* assumes gcc */
# define NORETURN_PTR NORETURN
# define _cdecl /* empty */
#endif

#if NACL_WINDOWS
# define THREAD __declspec(thread)
# include <windows.h>
#else
# define THREAD __thread
# define WINAPI
#endif

#if NACL_WINDOWS
# define NACL_WUR
#else
# define NACL_WUR __attribute__((__warn_unused_result__))
#endif

#if NACL_WINDOWS
/*
 * Cribbed from Cr base/compiler_specific.h so NaCl does not depend on base/
 */

#define NACL_MSVC_PUSH_DISABLE_WARNING(n) \
  __pragma(warning(push))                 \
  __pragma(warning(disable:n))

#define NACL_MSVC_POP_WARNING() __pragma(warning(pop))

# define NACL_ALLOW_THIS_IN_INITIALIZER_LIST(code) \
  NACL_MSVC_PUSH_DISABLE_WARNING(4355)             \
  code                                             \
  NACL_MSVC_POP_WARNING()
#else
# define NACL_ALLOW_THIS_IN_INITIALIZER_LIST(code) code
#endif

/*
 * NACL_LIKELY(x) returns the boolean x and tells the compiler that x
 * is likely to be true.
 *
 * Similarly, NACL_UNLIKELY(x) returns the boolean x and tells the
 * compiler that x is likely to be false.
 */
#if defined(__GNUC__)
# define NACL_LIKELY(x) (__builtin_expect((x) != 0, 1))
# define NACL_UNLIKELY(x) (__builtin_expect((x) != 0, 0))
#else
# define NACL_LIKELY(x) (x)
# define NACL_UNLIKELY(x) (x)
#endif

#ifndef __has_attribute
# define __has_attribute(x) 0
#endif
#if __has_attribute(fallthrough)
# define NACL_FALLTHROUGH __attribute__((fallthrough))
#else
# define NACL_FALLTHROUGH
#endif

#endif