203 lines
6.2 KiB
C
203 lines
6.2 KiB
C
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/*
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* Copyright 2004 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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#ifndef WEBRTC_BASE_COMMON_H_ // NOLINT
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#define WEBRTC_BASE_COMMON_H_
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#include "webrtc/base/basictypes.h"
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#include "webrtc/base/constructormagic.h"
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#if defined(_MSC_VER)
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// warning C4355: 'this' : used in base member initializer list
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#pragma warning(disable:4355)
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#endif
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//////////////////////////////////////////////////////////////////////
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// General Utilities
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//////////////////////////////////////////////////////////////////////
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#ifndef RTC_UNUSED
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#define RTC_UNUSED(x) RtcUnused(static_cast<const void*>(&x))
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#define RTC_UNUSED2(x, y) RtcUnused(static_cast<const void*>(&x)); \
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RtcUnused(static_cast<const void*>(&y))
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#define RTC_UNUSED3(x, y, z) RtcUnused(static_cast<const void*>(&x)); \
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RtcUnused(static_cast<const void*>(&y)); \
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RtcUnused(static_cast<const void*>(&z))
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#define RTC_UNUSED4(x, y, z, a) RtcUnused(static_cast<const void*>(&x)); \
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RtcUnused(static_cast<const void*>(&y)); \
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RtcUnused(static_cast<const void*>(&z)); \
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RtcUnused(static_cast<const void*>(&a))
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#define RTC_UNUSED5(x, y, z, a, b) RtcUnused(static_cast<const void*>(&x)); \
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RtcUnused(static_cast<const void*>(&y)); \
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RtcUnused(static_cast<const void*>(&z)); \
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RtcUnused(static_cast<const void*>(&a)); \
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RtcUnused(static_cast<const void*>(&b))
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inline void RtcUnused(const void*) {}
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#endif // RTC_UNUSED
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#if !defined(WEBRTC_WIN)
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#ifndef strnicmp
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#define strnicmp(x, y, n) strncasecmp(x, y, n)
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#endif
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#ifndef stricmp
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#define stricmp(x, y) strcasecmp(x, y)
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#endif
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#endif // !defined(WEBRTC_WIN)
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/////////////////////////////////////////////////////////////////////////////
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// Assertions
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/////////////////////////////////////////////////////////////////////////////
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#ifndef ENABLE_DEBUG
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#if !defined(NDEBUG)
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#define ENABLE_DEBUG 1
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#else
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#define ENABLE_DEBUG 0
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#endif
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#endif // !defined(ENABLE_DEBUG)
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// Even for release builds, allow for the override of LogAssert. Though no
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// macro is provided, this can still be used for explicit runtime asserts
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// and allow applications to override the assert behavior.
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namespace rtc {
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// If a debugger is attached, triggers a debugger breakpoint. If a debugger is
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// not attached, forces program termination.
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void Break();
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// LogAssert writes information about an assertion to the log. It's called by
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// Assert (and from the ASSERT macro in debug mode) before any other action
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// is taken (e.g. breaking the debugger, abort()ing, etc.).
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void LogAssert(const char* function, const char* file, int line,
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const char* expression);
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typedef void (*AssertLogger)(const char* function,
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const char* file,
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int line,
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const char* expression);
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// Sets a custom assert logger to be used instead of the default LogAssert
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// behavior. To clear the custom assert logger, pass NULL for |logger| and the
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// default behavior will be restored. Only one custom assert logger can be set
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// at a time, so this should generally be set during application startup and
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// only by one component.
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void SetCustomAssertLogger(AssertLogger logger);
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bool IsOdd(int n);
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bool IsEven(int n);
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} // namespace rtc
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#if ENABLE_DEBUG
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namespace rtc {
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inline bool Assert(bool result, const char* function, const char* file,
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int line, const char* expression) {
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if (!result) {
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LogAssert(function, file, line, expression);
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Break();
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}
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return result;
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}
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// Same as Assert above, but does not call Break(). Used in assert macros
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// that implement their own breaking.
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inline bool AssertNoBreak(bool result, const char* function, const char* file,
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int line, const char* expression) {
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if (!result)
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LogAssert(function, file, line, expression);
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return result;
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}
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} // namespace rtc
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#if defined(_MSC_VER) && _MSC_VER < 1300
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#define __FUNCTION__ ""
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#endif
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#ifndef ASSERT
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#if defined(WIN32)
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// Using debugbreak() inline on Windows directly in the ASSERT macro, has the
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// benefit of breaking exactly where the failing expression is and not two
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// calls up the stack.
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#define ASSERT(x) \
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(rtc::AssertNoBreak((x), __FUNCTION__, __FILE__, __LINE__, #x) ? \
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(void)(1) : __debugbreak())
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#else
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#define ASSERT(x) \
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(void)rtc::Assert((x), __FUNCTION__, __FILE__, __LINE__, #x)
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#endif
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#endif
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#ifndef VERIFY
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#if defined(WIN32)
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#define VERIFY(x) \
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(rtc::AssertNoBreak((x), __FUNCTION__, __FILE__, __LINE__, #x) ? \
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true : (__debugbreak(), false))
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#else
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#define VERIFY(x) rtc::Assert((x), __FUNCTION__, __FILE__, __LINE__, #x)
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#endif
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#endif
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#else // !ENABLE_DEBUG
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namespace rtc {
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inline bool ImplicitCastToBool(bool result) { return result; }
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} // namespace rtc
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#ifndef ASSERT
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#define ASSERT(x) (void)0
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#endif
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#ifndef VERIFY
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#define VERIFY(x) rtc::ImplicitCastToBool(x)
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#endif
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#endif // !ENABLE_DEBUG
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#define COMPILE_TIME_ASSERT(expr) char CTA_UNIQUE_NAME[expr]
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#define CTA_UNIQUE_NAME CTA_MAKE_NAME(__LINE__)
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#define CTA_MAKE_NAME(line) CTA_MAKE_NAME2(line)
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#define CTA_MAKE_NAME2(line) constraint_ ## line
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// Forces compiler to inline, even against its better judgement. Use wisely.
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#if defined(__GNUC__)
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#define FORCE_INLINE __attribute__ ((__always_inline__))
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#elif defined(WEBRTC_WIN)
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#define FORCE_INLINE __forceinline
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#else
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#define FORCE_INLINE
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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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// To explicitly ignore a result, see |ignore_result()| in <base/basictypes.h>.
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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__) || defined(__clang__)
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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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#endif // WEBRTC_BASE_COMMON_H_ // NOLINT
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