1 /* 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_BASE_BASICTYPES_H_ 12 #define WEBRTC_BASE_BASICTYPES_H_ 13 14 #include <stddef.h> // for NULL, size_t 15 #include <stdint.h> // for uintptr_t and (u)int_t types. 16 17 #ifdef HAVE_CONFIG_H 18 #include "config.h" // NOLINT 19 #endif 20 21 // Detect compiler is for x86 or x64. 22 #if defined(__x86_64__) || defined(_M_X64) || \ 23 defined(__i386__) || defined(_M_IX86) 24 #define CPU_X86 1 25 #endif 26 27 // Detect compiler is for arm. 28 #if defined(__arm__) || defined(_M_ARM) 29 #define CPU_ARM 1 30 #endif 31 32 #if defined(CPU_X86) && defined(CPU_ARM) 33 #error CPU_X86 and CPU_ARM both defined. 34 #endif 35 36 #if !defined(RTC_ARCH_CPU_BIG_ENDIAN) && !defined(RTC_ARCH_CPU_LITTLE_ENDIAN) 37 // x86, arm or GCC provided __BYTE_ORDER__ macros 38 #if CPU_X86 || CPU_ARM || \ 39 (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) 40 #define RTC_ARCH_CPU_LITTLE_ENDIAN 41 #elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 42 #define RTC_ARCH_CPU_BIG_ENDIAN 43 #else 44 #error RTC_ARCH_CPU_BIG_ENDIAN or RTC_ARCH_CPU_LITTLE_ENDIAN should be defined. 45 #endif 46 #endif 47 48 #if defined(RTC_ARCH_CPU_BIG_ENDIAN) && defined(RTC_ARCH_CPU_LITTLE_ENDIAN) 49 #error RTC_ARCH_CPU_BIG_ENDIAN and RTC_ARCH_CPU_LITTLE_ENDIAN both defined. 50 #endif 51 52 #if defined(WEBRTC_WIN) 53 typedef int socklen_t; 54 #endif 55 56 // The following only works for C++ 57 #ifdef __cplusplus 58 59 #ifndef ALIGNP 60 #define ALIGNP(p, t) \ 61 (reinterpret_cast<uint8_t*>(((reinterpret_cast<uintptr_t>(p) + \ 62 ((t) - 1)) & ~((t) - 1)))) 63 #endif 64 65 #define RTC_IS_ALIGNED(p, a) (!((uintptr_t)(p) & ((a) - 1))) 66 67 // Use these to declare and define a static local variable that gets leaked so 68 // that its destructors are not called at exit. 69 #define RTC_DEFINE_STATIC_LOCAL(type, name, arguments) \ 70 static type& name = *new type arguments 71 72 #endif // __cplusplus 73 74 #endif // WEBRTC_BASE_BASICTYPES_H_ 75