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92ea95e34a
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC from src/webrtc to src/ (in order to preserve an healthy git history). This CL takes care of fixing header guards, #include paths, etc... NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578 Reviewed-on: https://webrtc-review.googlesource.com/1561 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19846}
125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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// This file contains platform-specific typedefs and defines.
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// Much of it is derived from Chromium's build/build_config.h.
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#ifndef TYPEDEFS_H_
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#define TYPEDEFS_H_
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// Processor architecture detection. For more info on what's defined, see:
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// http://msdn.microsoft.com/en-us/library/b0084kay.aspx
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// http://www.agner.org/optimize/calling_conventions.pdf
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// or with gcc, run: "echo | gcc -E -dM -"
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#if defined(_M_X64) || defined(__x86_64__)
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#define WEBRTC_ARCH_X86_FAMILY
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#define WEBRTC_ARCH_X86_64
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#define WEBRTC_ARCH_64_BITS
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#define WEBRTC_ARCH_LITTLE_ENDIAN
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#elif defined(__aarch64__)
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#define WEBRTC_ARCH_ARM_FAMILY
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#define WEBRTC_ARCH_64_BITS
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#define WEBRTC_ARCH_LITTLE_ENDIAN
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#elif defined(_M_IX86) || defined(__i386__)
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#define WEBRTC_ARCH_X86_FAMILY
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#define WEBRTC_ARCH_X86
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#define WEBRTC_ARCH_32_BITS
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#define WEBRTC_ARCH_LITTLE_ENDIAN
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#elif defined(__ARMEL__)
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#define WEBRTC_ARCH_ARM_FAMILY
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#define WEBRTC_ARCH_32_BITS
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#define WEBRTC_ARCH_LITTLE_ENDIAN
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#elif defined(__MIPSEL__)
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#define WEBRTC_ARCH_MIPS_FAMILY
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#if defined(__LP64__)
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#define WEBRTC_ARCH_64_BITS
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#else
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#define WEBRTC_ARCH_32_BITS
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#endif
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#define WEBRTC_ARCH_LITTLE_ENDIAN
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#elif defined(__pnacl__)
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#define WEBRTC_ARCH_32_BITS
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#define WEBRTC_ARCH_LITTLE_ENDIAN
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#else
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#error Please add support for your architecture in typedefs.h
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#endif
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#if !(defined(WEBRTC_ARCH_LITTLE_ENDIAN) ^ defined(WEBRTC_ARCH_BIG_ENDIAN))
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#error Define either WEBRTC_ARCH_LITTLE_ENDIAN or WEBRTC_ARCH_BIG_ENDIAN
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#endif
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// TODO(zhongwei.yao): WEBRTC_CPU_DETECTION is only used in one place; we should
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// probably just remove it.
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#if (defined(WEBRTC_ARCH_X86_FAMILY) && !defined(__SSE2__))
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#define WEBRTC_CPU_DETECTION
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#endif
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#include <stdint.h>
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// Annotate a function indicating the caller must examine the return value.
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// Use like:
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// int foo() RTC_WARN_UNUSED_RESULT;
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// To explicitly ignore a result, cast to void.
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// TODO(kwiberg): Remove when we can use [[nodiscard]] from C++17.
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#if defined(__clang__)
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#define RTC_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
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#elif defined(__GNUC__)
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// gcc has a __warn_unused_result__ attribute, but you can't quiet it by
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// casting to void, so we don't use it.
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#define RTC_WARN_UNUSED_RESULT
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#else
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#define RTC_WARN_UNUSED_RESULT
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#endif
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// Put after a variable that might not be used, to prevent compiler warnings:
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// int result ATTRIBUTE_UNUSED = DoSomething();
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// assert(result == 17);
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// Deprecated since it only works with GCC & clang. See RTC_UNUSED below.
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// TODO(terelius): Remove.
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#ifndef ATTRIBUTE_UNUSED
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#if defined(__GNUC__) || defined(__clang__)
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#define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
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#else
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#define ATTRIBUTE_UNUSED
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#endif
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#endif
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// Macro to be used for switch-case fallthrough (required for enabling
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// -Wimplicit-fallthrough warning on Clang).
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#ifndef FALLTHROUGH
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#if defined(__clang__)
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#define FALLTHROUGH() [[clang::fallthrough]]
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#else
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#define FALLTHROUGH() do { } while (0)
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#endif
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#endif
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#ifndef NO_RETURN
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// Annotate a function that will not return control flow to the caller.
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#if defined(_MSC_VER)
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#define NO_RETURN __declspec(noreturn)
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#elif defined(__GNUC__)
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#define NO_RETURN __attribute__ ((__noreturn__))
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#else
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#define NO_RETURN
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#endif
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#endif
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// Prevent the compiler from warning about an unused variable. For example:
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// int result = DoSomething();
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// assert(result == 17);
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// RTC_UNUSED(result);
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// Note: In most cases it is better to remove the unused variable rather than
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// suppressing the compiler warning.
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#ifndef RTC_UNUSED
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#define RTC_UNUSED(x) static_cast<void>(x)
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#endif // RTC_UNUSED
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#endif // TYPEDEFS_H_
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