| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| // This file contains platform-specific typedefs and defines. |
| // Much of it is derived from Chromium's build/build_config.h. |
| |
| #ifndef WEBRTC_TYPEDEFS_H_ |
| #define WEBRTC_TYPEDEFS_H_ |
| |
| // Processor architecture detection. For more info on what's defined, see: |
| // http://msdn.microsoft.com/en-us/library/b0084kay.aspx |
| // http://www.agner.org/optimize/calling_conventions.pdf |
| // or with gcc, run: "echo | gcc -E -dM -" |
| #if defined(_M_X64) || defined(__x86_64__) |
| #define WEBRTC_ARCH_X86_FAMILY |
| #define WEBRTC_ARCH_X86_64 |
| #define WEBRTC_ARCH_64_BITS |
| #define WEBRTC_ARCH_LITTLE_ENDIAN |
| #elif defined(__aarch64__) |
| #define WEBRTC_ARCH_64_BITS |
| #define WEBRTC_ARCH_LITTLE_ENDIAN |
| #elif defined(_M_IX86) || defined(__i386__) |
| #define WEBRTC_ARCH_X86_FAMILY |
| #define WEBRTC_ARCH_X86 |
| #define WEBRTC_ARCH_32_BITS |
| #define WEBRTC_ARCH_LITTLE_ENDIAN |
| #elif defined(__ARMEL__) |
| // TODO(ajm): We'd prefer to control platform defines here, but this is |
| // currently provided by the Android makefiles. Commented to avoid duplicate |
| // definition warnings. |
| //#define WEBRTC_ARCH_ARM |
| // TODO(ajm): Chromium uses the following two defines. Should we switch? |
| //#define WEBRTC_ARCH_ARM_FAMILY |
| //#define WEBRTC_ARCH_ARMEL |
| #define WEBRTC_ARCH_32_BITS |
| #define WEBRTC_ARCH_LITTLE_ENDIAN |
| #elif defined(__MIPSEL__) |
| #define WEBRTC_ARCH_32_BITS |
| #define WEBRTC_ARCH_LITTLE_ENDIAN |
| #elif defined(__pnacl__) |
| #define WEBRTC_ARCH_32_BITS |
| #define WEBRTC_ARCH_LITTLE_ENDIAN |
| #else |
| #error Please add support for your architecture in typedefs.h |
| #endif |
| |
| #if !(defined(WEBRTC_ARCH_LITTLE_ENDIAN) ^ defined(WEBRTC_ARCH_BIG_ENDIAN)) |
| #error Define either WEBRTC_ARCH_LITTLE_ENDIAN or WEBRTC_ARCH_BIG_ENDIAN |
| #endif |
| |
| // TODO(zhongwei.yao): WEBRTC_CPU_DETECTION is only used in one place; we should |
| // probably just remove it. |
| #if (defined(WEBRTC_ARCH_X86_FAMILY) && !defined(__SSE2__)) || \ |
| defined(WEBRTC_DETECT_NEON) |
| #define WEBRTC_CPU_DETECTION |
| #endif |
| |
| // TODO(pbos): Use webrtc/base/basictypes.h instead to include fixed-size ints. |
| #include <stdint.h> |
| |
| // Annotate a function indicating the caller must examine the return value. |
| // Use like: |
| // int foo() WARN_UNUSED_RESULT; |
| // TODO(ajm): Hack to avoid multiple definitions until the base/ of webrtc and |
| // libjingle are merged. |
| #if !defined(WARN_UNUSED_RESULT) |
| #if defined(__GNUC__) |
| #define WARN_UNUSED_RESULT __attribute__((warn_unused_result)) |
| #else |
| #define WARN_UNUSED_RESULT |
| #endif |
| #endif // WARN_UNUSED_RESULT |
| |
| // Put after a variable that might not be used, to prevent compiler warnings: |
| // int result ATTRIBUTE_UNUSED = DoSomething(); |
| // assert(result == 17); |
| #ifndef ATTRIBUTE_UNUSED |
| #if defined(__GNUC__) || defined(__clang__) |
| #define ATTRIBUTE_UNUSED __attribute__((unused)) |
| #else |
| #define ATTRIBUTE_UNUSED |
| #endif |
| #endif |
| |
| // Macro to be used for switch-case fallthrough (required for enabling |
| // -Wimplicit-fallthrough warning on Clang). |
| #ifndef FALLTHROUGH |
| #if defined(__clang__) |
| #define FALLTHROUGH() [[clang::fallthrough]] |
| #else |
| #define FALLTHROUGH() do { } while (0) |
| #endif |
| #endif |
| |
| // Annotate a function that will not return control flow to the caller. |
| #if defined(_MSC_VER) |
| #define NO_RETURN __declspec(noreturn) |
| #elif defined(__GNUC__) |
| #define NO_RETURN __attribute__((noreturn)) |
| #else |
| #define NO_RETURN |
| #endif |
| |
| #endif // WEBRTC_TYPEDEFS_H_ |