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 <sys/types.h> // for pid_t 15 #include <stddef.h> // for NULL, size_t 16 #include <stdint.h> // for uintptr_t and (u)int_t types. 17 18 // Detect compiler is for x86 or x64. 19 #if defined(__x86_64__) || defined(_M_X64) || \ 20 defined(__i386__) || defined(_M_IX86) 21 #define CPU_X86 1 22 #endif 23 24 // Detect compiler is for arm. 25 #if defined(__arm__) || defined(_M_ARM) 26 #define CPU_ARM 1 27 #endif 28 29 #if defined(CPU_X86) && defined(CPU_ARM) 30 #error CPU_X86 and CPU_ARM both defined. 31 #endif 32 33 #if !defined(RTC_ARCH_CPU_BIG_ENDIAN) && !defined(RTC_ARCH_CPU_LITTLE_ENDIAN) 34 // x86, arm or GCC provided __BYTE_ORDER__ macros 35 #if defined(CPU_X86) || defined(CPU_ARM) || \ 36 (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) 37 #define RTC_ARCH_CPU_LITTLE_ENDIAN 38 #elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 39 #define RTC_ARCH_CPU_BIG_ENDIAN 40 #else 41 #error RTC_ARCH_CPU_BIG_ENDIAN or RTC_ARCH_CPU_LITTLE_ENDIAN should be defined. 42 #endif 43 #endif 44 45 #if defined(RTC_ARCH_CPU_BIG_ENDIAN) && defined(RTC_ARCH_CPU_LITTLE_ENDIAN) 46 #error RTC_ARCH_CPU_BIG_ENDIAN and RTC_ARCH_CPU_LITTLE_ENDIAN both defined. 47 #endif 48 49 #if defined(WEBRTC_WIN) 50 typedef int socklen_t; 51 #endif 52 53 // The following only works for C++ 54 #ifdef __cplusplus 55 56 #ifndef ALIGNP 57 #define ALIGNP(p, t) \ 58 (reinterpret_cast<uint8_t*>(((reinterpret_cast<uintptr_t>(p) + \ 59 ((t) - 1)) & ~((t) - 1)))) 60 #endif 61 62 #define RTC_IS_ALIGNED(p, a) (!((uintptr_t)(p) & ((a) - 1))) 63 64 // Use these to declare and define a static local variable that gets leaked so 65 // that its destructors are not called at exit. 66 #define RTC_DEFINE_STATIC_LOCAL(type, name, arguments) \ 67 static type& name = *new type arguments 68 69 #endif // __cplusplus 70 71 #endif // WEBRTC_BASE_BASICTYPES_H_ 72