Move base to DEPS

base/compiler_specific.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_COMPILER_SPECIFIC_H_
-#define BASE_COMPILER_SPECIFIC_H_
-
-#include "build/build_config.h"
-
-#if defined(COMPILER_MSVC)
-
-// Macros for suppressing and disabling warnings on MSVC.
-//
-// Warning numbers are enumerated at:
-// http://msdn.microsoft.com/en-us/library/8x5x43k7(VS.80).aspx
-//
-// The warning pragma:
-// http://msdn.microsoft.com/en-us/library/2c8f766e(VS.80).aspx
-//
-// Using __pragma instead of #pragma inside macros:
-// http://msdn.microsoft.com/en-us/library/d9x1s805.aspx
-
-// MSVC_SUPPRESS_WARNING disables warning |n| for the remainder of the line and
-// for the next line of the source file.
-#define MSVC_SUPPRESS_WARNING(n) __pragma(warning(suppress:n))
-
-// MSVC_PUSH_DISABLE_WARNING pushes |n| onto a stack of warnings to be disabled.
-// The warning remains disabled until popped by MSVC_POP_WARNING.
-#define MSVC_PUSH_DISABLE_WARNING(n) __pragma(warning(push)) \
-                                     __pragma(warning(disable:n))
-
-// MSVC_PUSH_WARNING_LEVEL pushes |n| as the global warning level.  The level
-// remains in effect until popped by MSVC_POP_WARNING().  Use 0 to disable all
-// warnings.
-#define MSVC_PUSH_WARNING_LEVEL(n) __pragma(warning(push, n))
-
-// Pop effects of innermost MSVC_PUSH_* macro.
-#define MSVC_POP_WARNING() __pragma(warning(pop))
-
-#define MSVC_DISABLE_OPTIMIZE() __pragma(optimize("", off))
-#define MSVC_ENABLE_OPTIMIZE() __pragma(optimize("", on))
-
-// Allows exporting a class that inherits from a non-exported base class.
-// This uses suppress instead of push/pop because the delimiter after the
-// declaration (either "," or "{") has to be placed before the pop macro.
-//
-// Example usage:
-// class EXPORT_API Foo : NON_EXPORTED_BASE(public Bar) {
-//
-// MSVC Compiler warning C4275:
-// non dll-interface class 'Bar' used as base for dll-interface class 'Foo'.
-// Note that this is intended to be used only when no access to the base class'
-// static data is done through derived classes or inline methods. For more info,
-// see http://msdn.microsoft.com/en-us/library/3tdb471s(VS.80).aspx
-#define NON_EXPORTED_BASE(code) MSVC_SUPPRESS_WARNING(4275) \
-                                code
-
-#else  // Not MSVC
-
-#define MSVC_SUPPRESS_WARNING(n)
-#define MSVC_PUSH_DISABLE_WARNING(n)
-#define MSVC_PUSH_WARNING_LEVEL(n)
-#define MSVC_POP_WARNING()
-#define MSVC_DISABLE_OPTIMIZE()
-#define MSVC_ENABLE_OPTIMIZE()
-#define NON_EXPORTED_BASE(code) code
-
-#endif  // COMPILER_MSVC
-
-
-// The C++ standard requires that static const members have an out-of-class
-// definition (in a single compilation unit), but MSVC chokes on this (when
-// language extensions, which are required, are enabled). (You're only likely to
-// notice the need for a definition if you take the address of the member or,
-// more commonly, pass it to a function that takes it as a reference argument --
-// probably an STL function.) This macro makes MSVC do the right thing. See
-// http://msdn.microsoft.com/en-us/library/34h23df8(v=vs.100).aspx for more
-// information. Use like:
-//
-// In .h file:
-//   struct Foo {
-//     static const int kBar = 5;
-//   };
-//
-// In .cc file:
-//   STATIC_CONST_MEMBER_DEFINITION const int Foo::kBar;
-#if defined(COMPILER_MSVC)
-#define STATIC_CONST_MEMBER_DEFINITION __declspec(selectany)
-#else
-#define STATIC_CONST_MEMBER_DEFINITION
-#endif
-
-// Annotate a variable indicating it's ok if the variable is not used.
-// (Typically used to silence a compiler warning when the assignment
-// is important for some other reason.)
-// Use like:
-//   int x = ...;
-//   ALLOW_UNUSED_LOCAL(x);
-#define ALLOW_UNUSED_LOCAL(x) false ? (void)x : (void)0
-
-// Annotate a typedef or function indicating it's ok if it's not used.
-// Use like:
-//   typedef Foo Bar ALLOW_UNUSED_TYPE;
-#if defined(COMPILER_GCC)
-#define ALLOW_UNUSED_TYPE __attribute__((unused))
-#else
-#define ALLOW_UNUSED_TYPE
-#endif
-
-// Annotate a function indicating it should not be inlined.
-// Use like:
-//   NOINLINE void DoStuff() { ... }
-#if defined(COMPILER_GCC)
-#define NOINLINE __attribute__((noinline))
-#elif defined(COMPILER_MSVC)
-#define NOINLINE __declspec(noinline)
-#else
-#define NOINLINE
-#endif
-
-// Specify memory alignment for structs, classes, etc.
-// Use like:
-//   class ALIGNAS(16) MyClass { ... }
-//   ALIGNAS(16) int array[4];
-#if defined(COMPILER_MSVC)
-#define ALIGNAS(byte_alignment) __declspec(align(byte_alignment))
-#elif defined(COMPILER_GCC)
-#define ALIGNAS(byte_alignment) __attribute__((aligned(byte_alignment)))
-#endif
-
-// Return the byte alignment of the given type (available at compile time).
-// Use like:
-//   ALIGNOF(int32)  // this would be 4
-#if defined(COMPILER_MSVC)
-#define ALIGNOF(type) __alignof(type)
-#elif defined(COMPILER_GCC)
-#define ALIGNOF(type) __alignof__(type)
-#endif
-
-// Annotate a function indicating the caller must examine the return value.
-// Use like:
-//   int foo() WARN_UNUSED_RESULT;
-// To explicitly ignore a result, see |ignore_result()| in base/macros.h.
-#if defined(COMPILER_GCC)
-#define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
-#else
-#define WARN_UNUSED_RESULT
-#endif
-
-// Tell the compiler a function is using a printf-style format string.
-// |format_param| is the one-based index of the format string parameter;
-// |dots_param| is the one-based index of the "..." parameter.
-// For v*printf functions (which take a va_list), pass 0 for dots_param.
-// (This is undocumented but matches what the system C headers do.)
-#if defined(COMPILER_GCC)
-#define PRINTF_FORMAT(format_param, dots_param) \
-    __attribute__((format(printf, format_param, dots_param)))
-#else
-#define PRINTF_FORMAT(format_param, dots_param)
-#endif
-
-// WPRINTF_FORMAT is the same, but for wide format strings.
-// This doesn't appear to yet be implemented in any compiler.
-// See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38308 .
-#define WPRINTF_FORMAT(format_param, dots_param)
-// If available, it would look like:
-//   __attribute__((format(wprintf, format_param, dots_param)))
-
-// MemorySanitizer annotations.
-#if defined(MEMORY_SANITIZER) && !defined(OS_NACL)
-#include <sanitizer/msan_interface.h>
-
-// Mark a memory region fully initialized.
-// Use this to annotate code that deliberately reads uninitialized data, for
-// example a GC scavenging root set pointers from the stack.
-#define MSAN_UNPOISON(p, size)  __msan_unpoison(p, size)
-
-// Check a memory region for initializedness, as if it was being used here.
-// If any bits are uninitialized, crash with an MSan report.
-// Use this to sanitize data which MSan won't be able to track, e.g. before
-// passing data to another process via shared memory.
-#define MSAN_CHECK_MEM_IS_INITIALIZED(p, size) \
-    __msan_check_mem_is_initialized(p, size)
-#else  // MEMORY_SANITIZER
-#define MSAN_UNPOISON(p, size)
-#define MSAN_CHECK_MEM_IS_INITIALIZED(p, size)
-#endif  // MEMORY_SANITIZER
-
-// Macro useful for writing cross-platform function pointers.
-#if !defined(CDECL)
-#if defined(OS_WIN)
-#define CDECL __cdecl
-#else  // defined(OS_WIN)
-#define CDECL
-#endif  // defined(OS_WIN)
-#endif  // !defined(CDECL)
-
-// Macro for hinting that an expression is likely to be false.
-#if !defined(UNLIKELY)
-#if defined(COMPILER_GCC)
-#define UNLIKELY(x) __builtin_expect(!!(x), 0)
-#else
-#define UNLIKELY(x) (x)
-#endif  // defined(COMPILER_GCC)
-#endif  // !defined(UNLIKELY)
-
-#endif  // BASE_COMPILER_SPECIFIC_H_