a5b7869f3d
Replace FATAL_ERROR_IF with the more familiar (to Chromium developers) CHECK and DCHECK. The full Chromium implementation is fairly elaborate but I copied enough to get us most of the benefits. I believe the main missing component is a more advanced stack dump. For this bit I relied on the V8 implementation. There are a few minor modifications from the Chromium original: - The FatalMessage class is specialized for logging fatal error messages and aborting. Chromium uses the general LogMessage class, which we could consider moving towards in the future. - NOTIMPLEMENTED() and NOTREACHED() have been removed, partly because I don't want to rely on our logging.h until base/ and system_wrappers/ are consolidated. - FATAL() replaces LOG(FATAL). Minor modifications from V8's stack dump: - If parsing of a stack trace symbol fails, just print the unparsed symbol. (I noticed this happened on Mac.) - Use __GLIBCXX__ and __UCLIBC__. This is from examining the backtrace use in Chromium. UNREACHABLE() has been removed because its behavior is different than Chromium's NOTREACHED(), which is bound to cause confusion. The few uses were replaced with FATAL(), matching the previous behavior. Add a NO_RETURN macro, allowing us to remove unreachable return statements following a CHECK/FATAL. TESTED=the addition of dummy CHECK, DCHECK, CHECK_EQ and FATAL did the did the right things. Stack traces work on Mac, but I don't get symbols on Linux. R=henrik.lundin@webrtc.org, kwiberg@webrtc.org, tommi@webrtc.org Review URL: https://webrtc-codereview.appspot.com/22449004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@7003 4adac7df-926f-26a2-2b94-8c16560cd09d
133 lines
4.4 KiB
C++
133 lines
4.4 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 WEBRTC_TYPEDEFS_H_
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#define WEBRTC_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_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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// TODO(ajm): We'd prefer to control platform defines here, but this is
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// currently provided by the Android makefiles. Commented to avoid duplicate
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// definition warnings.
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//#define WEBRTC_ARCH_ARM
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// TODO(ajm): Chromium uses the following two defines. Should we switch?
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//#define WEBRTC_ARCH_ARM_FAMILY
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//#define WEBRTC_ARCH_ARMEL
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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_32_BITS
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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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#if (defined(WEBRTC_ARCH_X86_FAMILY) && !defined(__SSE2__)) || \
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(defined(WEBRTC_ARCH_ARM_V7) && !defined(WEBRTC_ARCH_ARM_NEON))
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#define WEBRTC_CPU_DETECTION
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#endif
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#if !defined(_MSC_VER)
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#include <stdint.h>
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#else
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// Define C99 equivalent types, since pre-2010 MSVC doesn't provide stdint.h.
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typedef signed char int8_t;
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typedef signed short int16_t;
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typedef signed int int32_t;
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typedef __int64 int64_t;
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typedef unsigned char uint8_t;
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typedef unsigned short uint16_t;
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typedef unsigned int uint32_t;
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typedef unsigned __int64 uint64_t;
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#endif
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// Borrowed from Chromium's base/compiler_specific.h.
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// Annotate a virtual method indicating it must be overriding a virtual
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// method in the parent class.
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// Use like:
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// virtual void foo() OVERRIDE;
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#if defined(_MSC_VER)
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#define OVERRIDE override
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#elif defined(__clang__)
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// Clang defaults to C++03 and warns about using override. Squelch that.
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// Intentionally no push/pop here so all users of OVERRIDE ignore the warning
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// too. This is like passing -Wno-c++11-extensions, except that GCC won't die
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// (because it won't see this pragma).
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#pragma clang diagnostic ignored "-Wc++11-extensions"
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#define OVERRIDE override
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#elif defined(__GNUC__) && __cplusplus >= 201103 && \
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(__GNUC__ * 10000 + __GNUC_MINOR__ * 100) >= 40700
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// GCC 4.7 supports explicit virtual overrides when C++11 support is enabled.
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#define OVERRIDE override
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#else
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#define OVERRIDE
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#endif
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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() WARN_UNUSED_RESULT;
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// TODO(ajm): Hack to avoid multiple definitions until the base/ of webrtc and
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// libjingle are merged.
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#if !defined(WARN_UNUSED_RESULT)
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#if defined(__GNUC__)
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#define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
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#else
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#define WARN_UNUSED_RESULT
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#endif
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#endif // WARN_UNUSED_RESULT
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// Put after a variable that might not be used, to prevent compiler warnings:
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// int result UNUSED = DoSomething();
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// assert(result == 17);
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#ifndef UNUSED
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#ifdef __GNUC__
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#define UNUSED __attribute__((unused))
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#else
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#define UNUSED
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#endif
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#endif
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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 // WEBRTC_TYPEDEFS_H_
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