diff options
Diffstat (limited to 'include/gtest/internal/gtest-port.h')
| -rw-r--r-- | include/gtest/internal/gtest-port.h | 185 |
1 files changed, 167 insertions, 18 deletions
diff --git a/include/gtest/internal/gtest-port.h b/include/gtest/internal/gtest-port.h index dc4fe0c..a117676 100644 --- a/include/gtest/internal/gtest-port.h +++ b/include/gtest/internal/gtest-port.h @@ -30,8 +30,11 @@ // Authors: wan@google.com (Zhanyong Wan) // // Low-level types and utilities for porting Google Test to various -// platforms. They are subject to change without notice. DO NOT USE -// THEM IN USER CODE. +// platforms. All macros ending with _ and symbols defined in an +// internal namespace are subject to change without notice. Code +// outside Google Test MUST NOT USE THEM DIRECTLY. Macros that don't +// end with _ are part of Google Test's public API and can be used by +// code outside Google Test. // // This file is fundamental to Google Test. All other Google Test source // files are expected to #include this. Therefore, it cannot #include @@ -40,9 +43,30 @@ #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_ #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_ -// The user can define the following macros in the build script to -// control Google Test's behavior. If the user doesn't define a macro -// in this list, Google Test will define it. +// Environment-describing macros +// ----------------------------- +// +// Google Test can be used in many different environments. Macros in +// this section tell Google Test what kind of environment it is being +// used in, such that Google Test can provide environment-specific +// features and implementations. +// +// Google Test tries to automatically detect the properties of its +// environment, so users usually don't need to worry about these +// macros. However, the automatic detection is not perfect. +// Sometimes it's necessary for a user to define some of the following +// macros in the build script to override Google Test's decisions. +// +// If the user doesn't define a macro in the list, Google Test will +// provide a default definition. After this header is #included, all +// macros in this list will be defined to either 1 or 0. +// +// Notes to maintainers: +// - Each macro here is a user-tweakable knob; do not grow the list +// lightly. +// - Use #if to key off these macros. Don't use #ifdef or "#if +// defined(...)", which will not work as these macros are ALWAYS +// defined. // // GTEST_HAS_CLONE - Define it to 1/0 to indicate that clone(2) // is/isn't available. @@ -86,10 +110,15 @@ // - Define to 1 when compiling Google Test itself // as a shared library. -// This header defines the following utilities: +// Platform-indicating macros +// -------------------------- +// +// Macros indicating the platform on which Google Test is being used +// (a macro is defined to 1 if compiled on the given platform; +// otherwise UNDEFINED -- it's never defined to 0.). Google Test +// defines these macros automatically. Code outside Google Test MUST +// NOT define them. // -// Macros indicating the current platform (defined to 1 if compiled on -// the given platform; otherwise undefined): // GTEST_OS_AIX - IBM AIX // GTEST_OS_CYGWIN - Cygwin // GTEST_OS_HPUX - HP-UX @@ -116,22 +145,50 @@ // googletestframework@googlegroups.com (patches for fixing them are // even more welcome!). // -// Note that it is possible that none of the GTEST_OS_* macros are defined. +// It is possible that none of the GTEST_OS_* macros are defined. + +// Feature-indicating macros +// ------------------------- +// +// Macros indicating which Google Test features are available (a macro +// is defined to 1 if the corresponding feature is supported; +// otherwise UNDEFINED -- it's never defined to 0.). Google Test +// defines these macros automatically. Code outside Google Test MUST +// NOT define them. +// +// These macros are public so that portable tests can be written. +// Such tests typically surround code using a feature with an #if +// which controls that code. For example: +// +// #if GTEST_HAS_DEATH_TEST +// EXPECT_DEATH(DoSomethingDeadly()); +// #endif // -// Macros indicating available Google Test features (defined to 1 if -// the corresponding feature is supported; otherwise undefined): // GTEST_HAS_COMBINE - the Combine() function (for value-parameterized // tests) // GTEST_HAS_DEATH_TEST - death tests // GTEST_HAS_PARAM_TEST - value-parameterized tests // GTEST_HAS_TYPED_TEST - typed tests // GTEST_HAS_TYPED_TEST_P - type-parameterized tests +// GTEST_IS_THREADSAFE - Google Test is thread-safe. // GTEST_USES_POSIX_RE - enhanced POSIX regex is used. Do not confuse with // GTEST_HAS_POSIX_RE (see above) which users can // define themselves. // GTEST_USES_SIMPLE_RE - our own simple regex is used; // the above two are mutually exclusive. // GTEST_CAN_COMPARE_NULL - accepts untyped NULL in EXPECT_EQ(). + +// Misc public macros +// ------------------ +// +// GTEST_FLAG(flag_name) - references the variable corresponding to +// the given Google Test flag. + +// Internal utilities +// ------------------ +// +// The following macros and utilities are for Google Test's INTERNAL +// use only. Code outside Google Test MUST NOT USE THEM DIRECTLY. // // Macros for basic C++ coding: // GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning. @@ -140,13 +197,18 @@ // GTEST_DISALLOW_ASSIGN_ - disables operator=. // GTEST_DISALLOW_COPY_AND_ASSIGN_ - disables copy ctor and operator=. // GTEST_MUST_USE_RESULT_ - declares that a function's result must be used. +// GTEST_INTENTIONAL_CONST_COND_PUSH_ - start code section where MSVC C4127 is +// suppressed (constant conditional). +// GTEST_INTENTIONAL_CONST_COND_POP_ - finish code section where MSVC C4127 +// is suppressed. +// +// C++11 feature wrappers: +// +// GTEST_MOVE_ - portability wrapper for std::move. // // Synchronization: // Mutex, MutexLock, ThreadLocal, GetThreadCount() -// - synchronization primitives. -// GTEST_IS_THREADSAFE - defined to 1 to indicate that the above -// synchronization primitives have real implementations -// and Google Test is thread-safe; or 0 otherwise. +// - synchronization primitives. // // Template meta programming: // is_pointer - as in TR1; needed on Symbian and IBM XL C/C++ only. @@ -182,7 +244,6 @@ // BiggestInt - the biggest signed integer type. // // Command-line utilities: -// GTEST_FLAG() - references a flag. // GTEST_DECLARE_*() - declares a flag. // GTEST_DEFINE_*() - defines a flag. // GetInjectableArgvs() - returns the command line as a vector of strings. @@ -211,6 +272,7 @@ #include <iostream> // NOLINT #include <sstream> // NOLINT #include <string> // NOLINT +#include <utility> #define GTEST_DEV_EMAIL_ "googletestframework@@googlegroups.com" #define GTEST_FLAG_PREFIX_ "gtest_" @@ -282,6 +344,38 @@ # endif #endif +// C++11 specifies that <initializer_list> provides std::initializer_list. Use +// that if gtest is used in C++11 mode and libstdc++ isn't very old (binaries +// targeting OS X 10.6 can build with clang but need to use gcc4.2's +// libstdc++). +#if GTEST_LANG_CXX11 && (!defined(__GLIBCXX__) || __GLIBCXX__ > 20110325) +# define GTEST_HAS_STD_INITIALIZER_LIST_ 1 +#endif + +// C++11 specifies that <tuple> provides std::tuple. +// Some platforms still might not have it, however. +#if GTEST_LANG_CXX11 +# define GTEST_HAS_STD_TUPLE_ 1 +# if defined(__clang__) +// Inspired by http://clang.llvm.org/docs/LanguageExtensions.html#__has_include +# if defined(__has_include) && !__has_include(<tuple>) +# undef GTEST_HAS_STD_TUPLE_ +# endif +# elif defined(_MSC_VER) +// Inspired by boost/config/stdlib/dinkumware.hpp +# if defined(_CPPLIB_VER) && _CPPLIB_VER < 520 +# undef GTEST_HAS_STD_TUPLE_ +# endif +# elif defined(__GLIBCXX__) +// Inspired by boost/config/stdlib/libstdcpp3.hpp, +// http://gcc.gnu.org/gcc-4.2/changes.html and +// http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt01ch01.html#manual.intro.status.standard.200x +# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2) +# undef GTEST_HAS_STD_TUPLE_ +# endif +# endif +#endif + // Brings in definitions for functions used in the testing::internal::posix // namespace (read, write, close, chdir, isatty, stat). We do not currently // use them on Windows Mobile. @@ -738,6 +832,31 @@ using ::std::tuple_size; # define GTEST_MUST_USE_RESULT_ #endif // __GNUC__ && (GTEST_GCC_VER_ >= 30400) && !COMPILER_ICC +#if GTEST_LANG_CXX11 +# define GTEST_MOVE_(x) ::std::move(x) // NOLINT +#else +# define GTEST_MOVE_(x) x +#endif + +// MS C++ compiler emits warning when a conditional expression is compile time +// constant. In some contexts this warning is false positive and needs to be +// suppressed. Use the following two macros in such cases: +// +// GTEST_INTENTIONAL_CONST_COND_PUSH_ +// while (true) { +// GTEST_INTENTIONAL_CONST_COND_POP_ +// } +#if defined(_MSC_VER) +# define GTEST_INTENTIONAL_CONST_COND_PUSH_ \ + __pragma(warning(push)) \ + __pragma(warning(disable: 4127)) +# define GTEST_INTENTIONAL_CONST_COND_POP_ \ + __pragma(warning(pop)) +#else +# define GTEST_INTENTIONAL_CONST_COND_PUSH_ +# define GTEST_INTENTIONAL_CONST_COND_POP_ +#endif + // Determine whether the compiler supports Microsoft's Structured Exception // Handling. This is supported by several Windows compilers but generally // does not exist on any other system. @@ -782,6 +901,31 @@ using ::std::tuple_size; # define GTEST_HAS_CXXABI_H_ 0 #endif +// A function level attribute to disable checking for use of uninitialized +// memory when built with MemorySanitizer. +#if defined(__clang__) +# if __has_feature(memory_sanitizer) +# define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ \ + __attribute__((no_sanitize_memory)) +# else +# define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ +# endif // __has_feature(memory_sanitizer) +#else +# define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ +#endif // __clang__ + +// A function level attribute to disable AddressSanitizer instrumentation. +#if defined(__clang__) +# if __has_feature(address_sanitizer) +# define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ \ + __attribute__((no_sanitize_address)) +# else +# define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ +# endif // __has_feature(address_sanitizer) +#else +# define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ +#endif // __clang__ + namespace testing { class Message; @@ -797,8 +941,8 @@ class Secret; // expression is true. For example, you could use it to verify the // size of a static array: // -// GTEST_COMPILE_ASSERT_(ARRAYSIZE(content_type_names) == CONTENT_NUM_TYPES, -// content_type_names_incorrect_size); +// GTEST_COMPILE_ASSERT_(GTEST_ARRAY_SIZE_(names) == NUM_NAMES, +// names_incorrect_size); // // or to make sure a struct is smaller than a certain size: // @@ -866,6 +1010,9 @@ struct StaticAssertTypeEqHelper; template <typename T> struct StaticAssertTypeEqHelper<T, T> {}; +// Evaluates to the number of elements in 'array'. +#define GTEST_ARRAY_SIZE_(array) (sizeof(array) / sizeof(array[0])) + #if GTEST_HAS_GLOBAL_STRING typedef ::string string; #else @@ -1124,7 +1271,9 @@ inline To DownCast_(From* f) { // so we only accept pointers // for compile-time type checking, and has no overhead in an // optimized build at run-time, as it will be optimized away // completely. + GTEST_INTENTIONAL_CONST_COND_PUSH_ if (false) { + GTEST_INTENTIONAL_CONST_COND_POP_ const To to = NULL; ::testing::internal::ImplicitCast_<From*>(to); } |