1// Copyright 2005, Google Inc. 2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are 6// met: 7// 8// * Redistributions of source code must retain the above copyright 9// notice, this list of conditions and the following disclaimer. 10// * Redistributions in binary form must reproduce the above 11// copyright notice, this list of conditions and the following disclaimer 12// in the documentation and/or other materials provided with the 13// distribution. 14// * Neither the name of Google Inc. nor the names of its 15// contributors may be used to endorse or promote products derived from 16// this software without specific prior written permission. 17// 18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29// 30// Authors: wan@google.com (Zhanyong Wan) 31// 32// Low-level types and utilities for porting Google Test to various 33// platforms. All macros ending with _ and symbols defined in an 34// internal namespace are subject to change without notice. Code 35// outside Google Test MUST NOT USE THEM DIRECTLY. Macros that don't 36// end with _ are part of Google Test's public API and can be used by 37// code outside Google Test. 38// 39// This file is fundamental to Google Test. All other Google Test source 40// files are expected to #include this. Therefore, it cannot #include 41// any other Google Test header. 42 43#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_ 44#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_ 45 46// Environment-describing macros 47// ----------------------------- 48// 49// Google Test can be used in many different environments. Macros in 50// this section tell Google Test what kind of environment it is being 51// used in, such that Google Test can provide environment-specific 52// features and implementations. 53// 54// Google Test tries to automatically detect the properties of its 55// environment, so users usually don't need to worry about these 56// macros. However, the automatic detection is not perfect. 57// Sometimes it's necessary for a user to define some of the following 58// macros in the build script to override Google Test's decisions. 59// 60// If the user doesn't define a macro in the list, Google Test will 61// provide a default definition. After this header is #included, all 62// macros in this list will be defined to either 1 or 0. 63// 64// Notes to maintainers: 65// - Each macro here is a user-tweakable knob; do not grow the list 66// lightly. 67// - Use #if to key off these macros. Don't use #ifdef or "#if 68// defined(...)", which will not work as these macros are ALWAYS 69// defined. 70// 71// GTEST_HAS_CLONE - Define it to 1/0 to indicate that clone(2) 72// is/isn't available. 73// GTEST_HAS_EXCEPTIONS - Define it to 1/0 to indicate that exceptions 74// are enabled. 75// GTEST_HAS_GLOBAL_STRING - Define it to 1/0 to indicate that ::string 76// is/isn't available (some systems define 77// ::string, which is different to std::string). 78// GTEST_HAS_GLOBAL_WSTRING - Define it to 1/0 to indicate that ::string 79// is/isn't available (some systems define 80// ::wstring, which is different to std::wstring). 81// GTEST_HAS_POSIX_RE - Define it to 1/0 to indicate that POSIX regular 82// expressions are/aren't available. 83// GTEST_HAS_PTHREAD - Define it to 1/0 to indicate that <pthread.h> 84// is/isn't available. 85// GTEST_HAS_RTTI - Define it to 1/0 to indicate that RTTI is/isn't 86// enabled. 87// GTEST_HAS_STD_WSTRING - Define it to 1/0 to indicate that 88// std::wstring does/doesn't work (Google Test can 89// be used where std::wstring is unavailable). 90// GTEST_HAS_TR1_TUPLE - Define it to 1/0 to indicate tr1::tuple 91// is/isn't available. 92// GTEST_HAS_SEH - Define it to 1/0 to indicate whether the 93// compiler supports Microsoft's "Structured 94// Exception Handling". 95// GTEST_HAS_STREAM_REDIRECTION 96// - Define it to 1/0 to indicate whether the 97// platform supports I/O stream redirection using 98// dup() and dup2(). 99// GTEST_USE_OWN_TR1_TUPLE - Define it to 1/0 to indicate whether Google 100// Test's own tr1 tuple implementation should be 101// used. Unused when the user sets 102// GTEST_HAS_TR1_TUPLE to 0. 103// GTEST_LANG_CXX11 - Define it to 1/0 to indicate that Google Test 104// is building in C++11/C++98 mode. 105// GTEST_LINKED_AS_SHARED_LIBRARY 106// - Define to 1 when compiling tests that use 107// Google Test as a shared library (known as 108// DLL on Windows). 109// GTEST_CREATE_SHARED_LIBRARY 110// - Define to 1 when compiling Google Test itself 111// as a shared library. 112 113// Platform-indicating macros 114// -------------------------- 115// 116// Macros indicating the platform on which Google Test is being used 117// (a macro is defined to 1 if compiled on the given platform; 118// otherwise UNDEFINED -- it's never defined to 0.). Google Test 119// defines these macros automatically. Code outside Google Test MUST 120// NOT define them. 121// 122// GTEST_OS_AIX - IBM AIX 123// GTEST_OS_CYGWIN - Cygwin 124// GTEST_OS_HPUX - HP-UX 125// GTEST_OS_LINUX - Linux 126// GTEST_OS_LINUX_ANDROID - Google Android 127// GTEST_OS_MAC - Mac OS X 128// GTEST_OS_IOS - iOS 129// GTEST_OS_IOS_SIMULATOR - iOS simulator 130// GTEST_OS_NACL - Google Native Client (NaCl) 131// GTEST_OS_OPENBSD - OpenBSD 132// GTEST_OS_QNX - QNX 133// GTEST_OS_SOLARIS - Sun Solaris 134// GTEST_OS_SYMBIAN - Symbian 135// GTEST_OS_WINDOWS - Windows (Desktop, MinGW, or Mobile) 136// GTEST_OS_WINDOWS_DESKTOP - Windows Desktop 137// GTEST_OS_WINDOWS_MINGW - MinGW 138// GTEST_OS_WINDOWS_MOBILE - Windows Mobile 139// GTEST_OS_WINDOWS_PHONE - Windows Phone 140// GTEST_OS_WINDOWS_RT - Windows Store App/WinRT 141// GTEST_OS_ZOS - z/OS 142// 143// Among the platforms, Cygwin, Linux, Max OS X, and Windows have the 144// most stable support. Since core members of the Google Test project 145// don't have access to other platforms, support for them may be less 146// stable. If you notice any problems on your platform, please notify 147// googletestframework@googlegroups.com (patches for fixing them are 148// even more welcome!). 149// 150// It is possible that none of the GTEST_OS_* macros are defined. 151 152// Feature-indicating macros 153// ------------------------- 154// 155// Macros indicating which Google Test features are available (a macro 156// is defined to 1 if the corresponding feature is supported; 157// otherwise UNDEFINED -- it's never defined to 0.). Google Test 158// defines these macros automatically. Code outside Google Test MUST 159// NOT define them. 160// 161// These macros are public so that portable tests can be written. 162// Such tests typically surround code using a feature with an #if 163// which controls that code. For example: 164// 165// #if GTEST_HAS_DEATH_TEST 166// EXPECT_DEATH(DoSomethingDeadly()); 167// #endif 168// 169// GTEST_HAS_COMBINE - the Combine() function (for value-parameterized 170// tests) 171// GTEST_HAS_DEATH_TEST - death tests 172// GTEST_HAS_PARAM_TEST - value-parameterized tests 173// GTEST_HAS_TYPED_TEST - typed tests 174// GTEST_HAS_TYPED_TEST_P - type-parameterized tests 175// GTEST_IS_THREADSAFE - Google Test is thread-safe. 176// GTEST_USES_POSIX_RE - enhanced POSIX regex is used. Do not confuse with 177// GTEST_HAS_POSIX_RE (see above) which users can 178// define themselves. 179// GTEST_USES_SIMPLE_RE - our own simple regex is used; 180// the above two are mutually exclusive. 181// GTEST_CAN_COMPARE_NULL - accepts untyped NULL in EXPECT_EQ(). 182 183// Misc public macros 184// ------------------ 185// 186// GTEST_FLAG(flag_name) - references the variable corresponding to 187// the given Google Test flag. 188 189// Internal utilities 190// ------------------ 191// 192// The following macros and utilities are for Google Test's INTERNAL 193// use only. Code outside Google Test MUST NOT USE THEM DIRECTLY. 194// 195// Macros for basic C++ coding: 196// GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning. 197// GTEST_ATTRIBUTE_UNUSED_ - declares that a class' instances or a 198// variable don't have to be used. 199// GTEST_DISALLOW_ASSIGN_ - disables operator=. 200// GTEST_DISALLOW_COPY_AND_ASSIGN_ - disables copy ctor and operator=. 201// GTEST_MUST_USE_RESULT_ - declares that a function's result must be used. 202// GTEST_INTENTIONAL_CONST_COND_PUSH_ - start code section where MSVC C4127 is 203// suppressed (constant conditional). 204// GTEST_INTENTIONAL_CONST_COND_POP_ - finish code section where MSVC C4127 205// is suppressed. 206// 207// C++11 feature wrappers: 208// 209// GTEST_MOVE_ - portability wrapper for std::move. 210// 211// Synchronization: 212// Mutex, MutexLock, ThreadLocal, GetThreadCount() 213// - synchronization primitives. 214// 215// Template meta programming: 216// is_pointer - as in TR1; needed on Symbian and IBM XL C/C++ only. 217// IteratorTraits - partial implementation of std::iterator_traits, which 218// is not available in libCstd when compiled with Sun C++. 219// 220// Smart pointers: 221// scoped_ptr - as in TR2. 222// 223// Regular expressions: 224// RE - a simple regular expression class using the POSIX 225// Extended Regular Expression syntax on UNIX-like 226// platforms, or a reduced regular exception syntax on 227// other platforms, including Windows. 228// 229// Logging: 230// GTEST_LOG_() - logs messages at the specified severity level. 231// LogToStderr() - directs all log messages to stderr. 232// FlushInfoLog() - flushes informational log messages. 233// 234// Stdout and stderr capturing: 235// CaptureStdout() - starts capturing stdout. 236// GetCapturedStdout() - stops capturing stdout and returns the captured 237// string. 238// CaptureStderr() - starts capturing stderr. 239// GetCapturedStderr() - stops capturing stderr and returns the captured 240// string. 241// 242// Integer types: 243// TypeWithSize - maps an integer to a int type. 244// Int32, UInt32, Int64, UInt64, TimeInMillis 245// - integers of known sizes. 246// BiggestInt - the biggest signed integer type. 247// 248// Command-line utilities: 249// GTEST_DECLARE_*() - declares a flag. 250// GTEST_DEFINE_*() - defines a flag. 251// GetInjectableArgvs() - returns the command line as a vector of strings. 252// 253// Environment variable utilities: 254// GetEnv() - gets the value of an environment variable. 255// BoolFromGTestEnv() - parses a bool environment variable. 256// Int32FromGTestEnv() - parses an Int32 environment variable. 257// StringFromGTestEnv() - parses a string environment variable. 258 259#include <ctype.h> // for isspace, etc 260#include <stddef.h> // for ptrdiff_t 261#include <stdlib.h> 262#include <stdio.h> 263#include <string.h> 264#ifndef _WIN32_WCE 265# include <sys/types.h> 266# include <sys/stat.h> 267#endif // !_WIN32_WCE 268 269#if defined __APPLE__ 270# include <AvailabilityMacros.h> 271# include <TargetConditionals.h> 272#endif 273 274#include <algorithm> // NOLINT 275#include <iostream> // NOLINT 276#include <sstream> // NOLINT 277#include <string> // NOLINT 278#include <utility> 279 280#define GTEST_DEV_EMAIL_ "googletestframework@@googlegroups.com" 281#define GTEST_FLAG_PREFIX_ "gtest_" 282#define GTEST_FLAG_PREFIX_DASH_ "gtest-" 283#define GTEST_FLAG_PREFIX_UPPER_ "GTEST_" 284#define GTEST_NAME_ "Google Test" 285#define GTEST_PROJECT_URL_ "http://code.google.com/p/googletest/" 286 287// Determines the version of gcc that is used to compile this. 288#ifdef __GNUC__ 289// 40302 means version 4.3.2. 290# define GTEST_GCC_VER_ \ 291 (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__) 292#endif // __GNUC__ 293 294// Determines the platform on which Google Test is compiled. 295#ifdef __CYGWIN__ 296# define GTEST_OS_CYGWIN 1 297#elif defined __SYMBIAN32__ 298# define GTEST_OS_SYMBIAN 1 299#elif defined _WIN32 300# define GTEST_OS_WINDOWS 1 301# ifdef _WIN32_WCE 302# define GTEST_OS_WINDOWS_MOBILE 1 303# elif defined(__MINGW__) || defined(__MINGW32__) 304# define GTEST_OS_WINDOWS_MINGW 1 305# elif defined(WINAPI_FAMILY) 306# include <winapifamily.h> 307# if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) 308# define GTEST_OS_WINDOWS_DESKTOP 1 309# elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_PHONE_APP) 310# define GTEST_OS_WINDOWS_PHONE 1 311# elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) 312# define GTEST_OS_WINDOWS_RT 1 313# else 314 // WINAPI_FAMILY defined but no known partition matched. 315 // Default to desktop. 316# define GTEST_OS_WINDOWS_DESKTOP 1 317# endif 318# else 319# define GTEST_OS_WINDOWS_DESKTOP 1 320# endif // _WIN32_WCE 321#elif defined __APPLE__ 322# define GTEST_OS_MAC 1 323# if TARGET_OS_IPHONE 324# define GTEST_OS_IOS 1 325# if TARGET_IPHONE_SIMULATOR 326# define GTEST_OS_IOS_SIMULATOR 1 327# endif 328# endif 329#elif defined __linux__ 330# define GTEST_OS_LINUX 1 331# if defined __ANDROID__ 332# define GTEST_OS_LINUX_ANDROID 1 333# endif 334#elif defined __MVS__ 335# define GTEST_OS_ZOS 1 336#elif defined(__sun) && defined(__SVR4) 337# define GTEST_OS_SOLARIS 1 338#elif defined(_AIX) 339# define GTEST_OS_AIX 1 340#elif defined(__hpux) 341# define GTEST_OS_HPUX 1 342#elif defined __native_client__ 343# define GTEST_OS_NACL 1 344#elif defined __OpenBSD__ 345# define GTEST_OS_OPENBSD 1 346#elif defined __QNX__ 347# define GTEST_OS_QNX 1 348#endif // __CYGWIN__ 349 350// Macros for disabling Microsoft Visual C++ warnings. 351// 352// GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800 4385) 353// /* code that triggers warnings C4800 and C4385 */ 354// GTEST_DISABLE_MSC_WARNINGS_POP_() 355#if _MSC_VER >= 1500 356# define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings) \ 357 __pragma(warning(push)) \ 358 __pragma(warning(disable: warnings)) 359# define GTEST_DISABLE_MSC_WARNINGS_POP_() \ 360 __pragma(warning(pop)) 361#else 362// Older versions of MSVC don't have __pragma. 363# define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings) 364# define GTEST_DISABLE_MSC_WARNINGS_POP_() 365#endif 366 367#ifndef GTEST_LANG_CXX11 368// gcc and clang define __GXX_EXPERIMENTAL_CXX0X__ when 369// -std={c,gnu}++{0x,11} is passed. The C++11 standard specifies a 370// value for __cplusplus, and recent versions of clang, gcc, and 371// probably other compilers set that too in C++11 mode. 372# if __GXX_EXPERIMENTAL_CXX0X__ || __cplusplus >= 201103L 373// Compiling in at least C++11 mode. 374# define GTEST_LANG_CXX11 1 375# else 376# define GTEST_LANG_CXX11 0 377# endif 378#endif 379 380// C++11 specifies that <initializer_list> provides std::initializer_list. Use 381// that if gtest is used in C++11 mode and libstdc++ isn't very old (binaries 382// targeting OS X 10.6 can build with clang but need to use gcc4.2's 383// libstdc++). 384#if GTEST_LANG_CXX11 && (!defined(__GLIBCXX__) || __GLIBCXX__ > 20110325) 385# define GTEST_HAS_STD_INITIALIZER_LIST_ 1 386#endif 387 388// C++11 specifies that <tuple> provides std::tuple. 389// Some platforms still might not have it, however. 390#if GTEST_LANG_CXX11 391# define GTEST_HAS_STD_TUPLE_ 1 392# if defined(__clang__) 393// Inspired by http://clang.llvm.org/docs/LanguageExtensions.html#__has_include 394# if defined(__has_include) && !__has_include(<tuple>) 395# undef GTEST_HAS_STD_TUPLE_ 396# endif 397# elif defined(_MSC_VER) 398// Inspired by boost/config/stdlib/dinkumware.hpp 399# if defined(_CPPLIB_VER) && _CPPLIB_VER < 520 400# undef GTEST_HAS_STD_TUPLE_ 401# endif 402# elif defined(__GLIBCXX__) 403// Inspired by boost/config/stdlib/libstdcpp3.hpp, 404// http://gcc.gnu.org/gcc-4.2/changes.html and 405// http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt01ch01.html#manual.intro.status.standard.200x 406# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2) 407# undef GTEST_HAS_STD_TUPLE_ 408# endif 409# endif 410#endif 411 412// Brings in definitions for functions used in the testing::internal::posix 413// namespace (read, write, close, chdir, isatty, stat). We do not currently 414// use them on Windows Mobile. 415#if GTEST_OS_WINDOWS 416# if !GTEST_OS_WINDOWS_MOBILE 417# include <direct.h> 418# include <io.h> 419# endif 420// In order to avoid having to include <windows.h>, use forward declaration 421// assuming CRITICAL_SECTION is a typedef of _RTL_CRITICAL_SECTION. 422// This assumption is verified by 423// WindowsTypesTest.CRITICAL_SECTIONIs_RTL_CRITICAL_SECTION. 424struct _RTL_CRITICAL_SECTION; 425#else 426// This assumes that non-Windows OSes provide unistd.h. For OSes where this 427// is not the case, we need to include headers that provide the functions 428// mentioned above. 429# include <unistd.h> 430# include <strings.h> 431#endif // GTEST_OS_WINDOWS 432 433#if GTEST_OS_LINUX_ANDROID 434// Used to define __ANDROID_API__ matching the target NDK API level. 435# include <android/api-level.h> // NOLINT 436#endif 437 438// Defines this to true iff Google Test can use POSIX regular expressions. 439#ifndef GTEST_HAS_POSIX_RE 440# if GTEST_OS_LINUX_ANDROID 441// On Android, <regex.h> is only available starting with Gingerbread. 442# define GTEST_HAS_POSIX_RE (__ANDROID_API__ >= 9) 443# else 444# define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS) 445# endif 446#endif 447 448#if GTEST_HAS_POSIX_RE 449 450// On some platforms, <regex.h> needs someone to define size_t, and 451// won't compile otherwise. We can #include it here as we already 452// included <stdlib.h>, which is guaranteed to define size_t through 453// <stddef.h>. 454# include <regex.h> // NOLINT 455 456# define GTEST_USES_POSIX_RE 1 457 458#elif GTEST_OS_WINDOWS 459 460// <regex.h> is not available on Windows. Use our own simple regex 461// implementation instead. 462# define GTEST_USES_SIMPLE_RE 1 463 464#else 465 466// <regex.h> may not be available on this platform. Use our own 467// simple regex implementation instead. 468# define GTEST_USES_SIMPLE_RE 1 469 470#endif // GTEST_HAS_POSIX_RE 471 472#ifndef GTEST_HAS_EXCEPTIONS 473// The user didn't tell us whether exceptions are enabled, so we need 474// to figure it out. 475# if defined(_MSC_VER) || defined(__BORLANDC__) 476// MSVC's and C++Builder's implementations of the STL use the _HAS_EXCEPTIONS 477// macro to enable exceptions, so we'll do the same. 478// Assumes that exceptions are enabled by default. 479# ifndef _HAS_EXCEPTIONS 480# define _HAS_EXCEPTIONS 1 481# endif // _HAS_EXCEPTIONS 482# define GTEST_HAS_EXCEPTIONS _HAS_EXCEPTIONS 483# elif defined(__GNUC__) && __EXCEPTIONS 484// gcc defines __EXCEPTIONS to 1 iff exceptions are enabled. 485# define GTEST_HAS_EXCEPTIONS 1 486# elif defined(__SUNPRO_CC) 487// Sun Pro CC supports exceptions. However, there is no compile-time way of 488// detecting whether they are enabled or not. Therefore, we assume that 489// they are enabled unless the user tells us otherwise. 490# define GTEST_HAS_EXCEPTIONS 1 491# elif defined(__IBMCPP__) && __EXCEPTIONS 492// xlC defines __EXCEPTIONS to 1 iff exceptions are enabled. 493# define GTEST_HAS_EXCEPTIONS 1 494# elif defined(__HP_aCC) 495// Exception handling is in effect by default in HP aCC compiler. It has to 496// be turned of by +noeh compiler option if desired. 497# define GTEST_HAS_EXCEPTIONS 1 498# else 499// For other compilers, we assume exceptions are disabled to be 500// conservative. 501# define GTEST_HAS_EXCEPTIONS 0 502# endif // defined(_MSC_VER) || defined(__BORLANDC__) 503#endif // GTEST_HAS_EXCEPTIONS 504 505#if !defined(GTEST_HAS_STD_STRING) 506// Even though we don't use this macro any longer, we keep it in case 507// some clients still depend on it. 508# define GTEST_HAS_STD_STRING 1 509#elif !GTEST_HAS_STD_STRING 510// The user told us that ::std::string isn't available. 511# error "Google Test cannot be used where ::std::string isn't available." 512#endif // !defined(GTEST_HAS_STD_STRING) 513 514#ifndef GTEST_HAS_GLOBAL_STRING 515// The user didn't tell us whether ::string is available, so we need 516// to figure it out. 517 518# define GTEST_HAS_GLOBAL_STRING 0 519 520#endif // GTEST_HAS_GLOBAL_STRING 521 522#ifndef GTEST_HAS_STD_WSTRING 523// The user didn't tell us whether ::std::wstring is available, so we need 524// to figure it out. 525// TODO(wan@google.com): uses autoconf to detect whether ::std::wstring 526// is available. 527 528// Cygwin 1.7 and below doesn't support ::std::wstring. 529// Solaris' libc++ doesn't support it either. Android has 530// no support for it at least as recent as Froyo (2.2). 531# define GTEST_HAS_STD_WSTRING \ 532 (!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS)) 533 534#endif // GTEST_HAS_STD_WSTRING 535 536#ifndef GTEST_HAS_GLOBAL_WSTRING 537// The user didn't tell us whether ::wstring is available, so we need 538// to figure it out. 539# define GTEST_HAS_GLOBAL_WSTRING \ 540 (GTEST_HAS_STD_WSTRING && GTEST_HAS_GLOBAL_STRING) 541#endif // GTEST_HAS_GLOBAL_WSTRING 542 543// Determines whether RTTI is available. 544#ifndef GTEST_HAS_RTTI 545// The user didn't tell us whether RTTI is enabled, so we need to 546// figure it out. 547 548# ifdef _MSC_VER 549 550# ifdef _CPPRTTI // MSVC defines this macro iff RTTI is enabled. 551# define GTEST_HAS_RTTI 1 552# else 553# define GTEST_HAS_RTTI 0 554# endif 555 556// Starting with version 4.3.2, gcc defines __GXX_RTTI iff RTTI is enabled. 557# elif defined(__GNUC__) && (GTEST_GCC_VER_ >= 40302) 558 559# ifdef __GXX_RTTI 560// When building against STLport with the Android NDK and with 561// -frtti -fno-exceptions, the build fails at link time with undefined 562// references to __cxa_bad_typeid. Note sure if STL or toolchain bug, 563// so disable RTTI when detected. 564# if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR) && \ 565 !defined(__EXCEPTIONS) 566# define GTEST_HAS_RTTI 0 567# else 568# define GTEST_HAS_RTTI 1 569# endif // GTEST_OS_LINUX_ANDROID && __STLPORT_MAJOR && !__EXCEPTIONS 570# else 571# define GTEST_HAS_RTTI 0 572# endif // __GXX_RTTI 573 574// Clang defines __GXX_RTTI starting with version 3.0, but its manual recommends 575// using has_feature instead. has_feature(cxx_rtti) is supported since 2.7, the 576// first version with C++ support. 577# elif defined(__clang__) 578 579# define GTEST_HAS_RTTI __has_feature(cxx_rtti) 580 581// Starting with version 9.0 IBM Visual Age defines __RTTI_ALL__ to 1 if 582// both the typeid and dynamic_cast features are present. 583# elif defined(__IBMCPP__) && (__IBMCPP__ >= 900) 584 585# ifdef __RTTI_ALL__ 586# define GTEST_HAS_RTTI 1 587# else 588# define GTEST_HAS_RTTI 0 589# endif 590 591# else 592 593// For all other compilers, we assume RTTI is enabled. 594# define GTEST_HAS_RTTI 1 595 596# endif // _MSC_VER 597 598#endif // GTEST_HAS_RTTI 599 600// It's this header's responsibility to #include <typeinfo> when RTTI 601// is enabled. 602#if GTEST_HAS_RTTI 603# include <typeinfo> 604#endif 605 606// Determines whether Google Test can use the pthreads library. 607#ifndef GTEST_HAS_PTHREAD 608// The user didn't tell us explicitly, so we assume pthreads support is 609// available on Linux and Mac. 610// 611// To disable threading support in Google Test, add -DGTEST_HAS_PTHREAD=0 612// to your compiler flags. 613# define GTEST_HAS_PTHREAD (GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_HPUX \ 614 || GTEST_OS_QNX) 615#endif // GTEST_HAS_PTHREAD 616 617#if GTEST_HAS_PTHREAD 618// gtest-port.h guarantees to #include <pthread.h> when GTEST_HAS_PTHREAD is 619// true. 620# include <pthread.h> // NOLINT 621 622// For timespec and nanosleep, used below. 623# include <time.h> // NOLINT 624#endif 625 626// Determines whether Google Test can use tr1/tuple. You can define 627// this macro to 0 to prevent Google Test from using tuple (any 628// feature depending on tuple with be disabled in this mode). 629#ifndef GTEST_HAS_TR1_TUPLE 630# if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR) 631// STLport, provided with the Android NDK, has neither <tr1/tuple> or <tuple>. 632# define GTEST_HAS_TR1_TUPLE 0 633# else 634// The user didn't tell us not to do it, so we assume it's OK. 635# define GTEST_HAS_TR1_TUPLE 1 636# endif 637#endif // GTEST_HAS_TR1_TUPLE 638 639// Determines whether Google Test's own tr1 tuple implementation 640// should be used. 641#ifndef GTEST_USE_OWN_TR1_TUPLE 642// The user didn't tell us, so we need to figure it out. 643 644// We use our own TR1 tuple if we aren't sure the user has an 645// implementation of it already. At this time, libstdc++ 4.0.0+ and 646// MSVC 2010 are the only mainstream standard libraries that come 647// with a TR1 tuple implementation. NVIDIA's CUDA NVCC compiler 648// pretends to be GCC by defining __GNUC__ and friends, but cannot 649// compile GCC's tuple implementation. MSVC 2008 (9.0) provides TR1 650// tuple in a 323 MB Feature Pack download, which we cannot assume the 651// user has. QNX's QCC compiler is a modified GCC but it doesn't 652// support TR1 tuple. libc++ only provides std::tuple, in C++11 mode, 653// and it can be used with some compilers that define __GNUC__. 654# if (defined(__GNUC__) && !defined(__CUDACC__) && (GTEST_GCC_VER_ >= 40000) \ 655 && !GTEST_OS_QNX && !defined(_LIBCPP_VERSION)) || _MSC_VER >= 1600 656# define GTEST_ENV_HAS_TR1_TUPLE_ 1 657# endif 658 659// C++11 specifies that <tuple> provides std::tuple. Use that if gtest is used 660// in C++11 mode and libstdc++ isn't very old (binaries targeting OS X 10.6 661// can build with clang but need to use gcc4.2's libstdc++). 662# if GTEST_LANG_CXX11 && (!defined(__GLIBCXX__) || __GLIBCXX__ > 20110325) 663# define GTEST_ENV_HAS_STD_TUPLE_ 1 664# endif 665 666# if GTEST_ENV_HAS_TR1_TUPLE_ || GTEST_ENV_HAS_STD_TUPLE_ 667# define GTEST_USE_OWN_TR1_TUPLE 0 668# else 669# define GTEST_USE_OWN_TR1_TUPLE 1 670# endif 671 672#endif // GTEST_USE_OWN_TR1_TUPLE 673 674// To avoid conditional compilation everywhere, we make it 675// gtest-port.h's responsibility to #include the header implementing 676// tuple. 677#if GTEST_HAS_STD_TUPLE_ 678# include <tuple> // IWYU pragma: export 679# define GTEST_TUPLE_NAMESPACE_ ::std 680#endif // GTEST_HAS_STD_TUPLE_ 681 682// We include tr1::tuple even if std::tuple is available to define printers for 683// them. 684#if GTEST_HAS_TR1_TUPLE 685# ifndef GTEST_TUPLE_NAMESPACE_ 686# define GTEST_TUPLE_NAMESPACE_ ::std::tr1 687# endif // GTEST_TUPLE_NAMESPACE_ 688 689# if GTEST_USE_OWN_TR1_TUPLE 690# include "gtest/internal/gtest-tuple.h" // IWYU pragma: export // NOLINT 691# elif GTEST_ENV_HAS_STD_TUPLE_ 692# include <tuple> 693// C++11 puts its tuple into the ::std namespace rather than 694// ::std::tr1. gtest expects tuple to live in ::std::tr1, so put it there. 695// This causes undefined behavior, but supported compilers react in 696// the way we intend. 697namespace std { 698namespace tr1 { 699using ::std::get; 700using ::std::make_tuple; 701using ::std::tuple; 702using ::std::tuple_element; 703using ::std::tuple_size; 704} 705} 706 707# elif GTEST_OS_SYMBIAN 708 709// On Symbian, BOOST_HAS_TR1_TUPLE causes Boost's TR1 tuple library to 710// use STLport's tuple implementation, which unfortunately doesn't 711// work as the copy of STLport distributed with Symbian is incomplete. 712// By making sure BOOST_HAS_TR1_TUPLE is undefined, we force Boost to 713// use its own tuple implementation. 714# ifdef BOOST_HAS_TR1_TUPLE 715# undef BOOST_HAS_TR1_TUPLE 716# endif // BOOST_HAS_TR1_TUPLE 717 718// This prevents <boost/tr1/detail/config.hpp>, which defines 719// BOOST_HAS_TR1_TUPLE, from being #included by Boost's <tuple>. 720# define BOOST_TR1_DETAIL_CONFIG_HPP_INCLUDED 721# include <tuple> // IWYU pragma: export // NOLINT 722 723# elif defined(__GNUC__) && (GTEST_GCC_VER_ >= 40000) 724// GCC 4.0+ implements tr1/tuple in the <tr1/tuple> header. This does 725// not conform to the TR1 spec, which requires the header to be <tuple>. 726 727# if !GTEST_HAS_RTTI && GTEST_GCC_VER_ < 40302 728// Until version 4.3.2, gcc has a bug that causes <tr1/functional>, 729// which is #included by <tr1/tuple>, to not compile when RTTI is 730// disabled. _TR1_FUNCTIONAL is the header guard for 731// <tr1/functional>. Hence the following #define is a hack to prevent 732// <tr1/functional> from being included. 733# define _TR1_FUNCTIONAL 1 734# include <tr1/tuple> 735# undef _TR1_FUNCTIONAL // Allows the user to #include 736 // <tr1/functional> if he chooses to. 737# else 738# include <tr1/tuple> // NOLINT 739# endif // !GTEST_HAS_RTTI && GTEST_GCC_VER_ < 40302 740 741# else 742// If the compiler is not GCC 4.0+, we assume the user is using a 743// spec-conforming TR1 implementation. 744# include <tuple> // IWYU pragma: export // NOLINT 745# endif // GTEST_USE_OWN_TR1_TUPLE 746 747#endif // GTEST_HAS_TR1_TUPLE 748 749// Determines whether clone(2) is supported. 750// Usually it will only be available on Linux, excluding 751// Linux on the Itanium architecture. 752// Also see http://linux.die.net/man/2/clone. 753#ifndef GTEST_HAS_CLONE 754// The user didn't tell us, so we need to figure it out. 755 756# if GTEST_OS_LINUX && !defined(__ia64__) 757# if GTEST_OS_LINUX_ANDROID 758// On Android, clone() is only available on ARM starting with Gingerbread. 759# if defined(__arm__) && __ANDROID_API__ >= 9 760# define GTEST_HAS_CLONE 1 761# else 762# define GTEST_HAS_CLONE 0 763# endif 764# else 765# define GTEST_HAS_CLONE 1 766# endif 767# else 768# define GTEST_HAS_CLONE 0 769# endif // GTEST_OS_LINUX && !defined(__ia64__) 770 771#endif // GTEST_HAS_CLONE 772 773// Determines whether to support stream redirection. This is used to test 774// output correctness and to implement death tests. 775#ifndef GTEST_HAS_STREAM_REDIRECTION 776// By default, we assume that stream redirection is supported on all 777// platforms except known mobile ones. 778# if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_SYMBIAN || \ 779 GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT 780# define GTEST_HAS_STREAM_REDIRECTION 0 781# else 782# define GTEST_HAS_STREAM_REDIRECTION 1 783# endif // !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_SYMBIAN 784#endif // GTEST_HAS_STREAM_REDIRECTION 785 786// Determines whether to support death tests. 787// Google Test does not support death tests for VC 7.1 and earlier as 788// abort() in a VC 7.1 application compiled as GUI in debug config 789// pops up a dialog window that cannot be suppressed programmatically. 790#if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \ 791 (GTEST_OS_MAC && !GTEST_OS_IOS) || GTEST_OS_IOS_SIMULATOR || \ 792 (GTEST_OS_WINDOWS_DESKTOP && _MSC_VER >= 1400) || \ 793 GTEST_OS_WINDOWS_MINGW || GTEST_OS_AIX || GTEST_OS_HPUX || \ 794 GTEST_OS_OPENBSD || GTEST_OS_QNX) 795# define GTEST_HAS_DEATH_TEST 1 796# include <vector> // NOLINT 797#endif 798 799// We don't support MSVC 7.1 with exceptions disabled now. Therefore 800// all the compilers we care about are adequate for supporting 801// value-parameterized tests. 802#define GTEST_HAS_PARAM_TEST 1 803 804// Determines whether to support type-driven tests. 805 806// Typed tests need <typeinfo> and variadic macros, which GCC, VC++ 8.0, 807// Sun Pro CC, IBM Visual Age, and HP aCC support. 808#if defined(__GNUC__) || (_MSC_VER >= 1400) || defined(__SUNPRO_CC) || \ 809 defined(__IBMCPP__) || defined(__HP_aCC) 810# define GTEST_HAS_TYPED_TEST 1 811# define GTEST_HAS_TYPED_TEST_P 1 812#endif 813 814// Determines whether to support Combine(). This only makes sense when 815// value-parameterized tests are enabled. The implementation doesn't 816// work on Sun Studio since it doesn't understand templated conversion 817// operators. 818#if GTEST_HAS_PARAM_TEST && GTEST_HAS_TR1_TUPLE && !defined(__SUNPRO_CC) 819# define GTEST_HAS_COMBINE 1 820#endif 821 822// Determines whether the system compiler uses UTF-16 for encoding wide strings. 823#define GTEST_WIDE_STRING_USES_UTF16_ \ 824 (GTEST_OS_WINDOWS || GTEST_OS_CYGWIN || GTEST_OS_SYMBIAN || GTEST_OS_AIX) 825 826// Determines whether test results can be streamed to a socket. 827#if GTEST_OS_LINUX 828# define GTEST_CAN_STREAM_RESULTS_ 1 829#endif 830 831// Defines some utility macros. 832 833// The GNU compiler emits a warning if nested "if" statements are followed by 834// an "else" statement and braces are not used to explicitly disambiguate the 835// "else" binding. This leads to problems with code like: 836// 837// if (gate) 838// ASSERT_*(condition) << "Some message"; 839// 840// The "switch (0) case 0:" idiom is used to suppress this. 841#ifdef __INTEL_COMPILER 842# define GTEST_AMBIGUOUS_ELSE_BLOCKER_ 843#else 844# define GTEST_AMBIGUOUS_ELSE_BLOCKER_ switch (0) case 0: default: // NOLINT 845#endif 846 847// Use this annotation at the end of a struct/class definition to 848// prevent the compiler from optimizing away instances that are never 849// used. This is useful when all interesting logic happens inside the 850// c'tor and / or d'tor. Example: 851// 852// struct Foo { 853// Foo() { ... } 854// } GTEST_ATTRIBUTE_UNUSED_; 855// 856// Also use it after a variable or parameter declaration to tell the 857// compiler the variable/parameter does not have to be used. 858#if defined(__GNUC__) && !defined(COMPILER_ICC) 859# define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused)) 860#else 861# define GTEST_ATTRIBUTE_UNUSED_ 862#endif 863 864// A macro to disallow operator= 865// This should be used in the private: declarations for a class. 866#define GTEST_DISALLOW_ASSIGN_(type)\ 867 void operator=(type const &) 868 869// A macro to disallow copy constructor and operator= 870// This should be used in the private: declarations for a class. 871#define GTEST_DISALLOW_COPY_AND_ASSIGN_(type)\ 872 type(type const &);\ 873 GTEST_DISALLOW_ASSIGN_(type) 874 875// Tell the compiler to warn about unused return values for functions declared 876// with this macro. The macro should be used on function declarations 877// following the argument list: 878// 879// Sprocket* AllocateSprocket() GTEST_MUST_USE_RESULT_; 880#if defined(__GNUC__) && (GTEST_GCC_VER_ >= 30400) && !defined(COMPILER_ICC) 881# define GTEST_MUST_USE_RESULT_ __attribute__ ((warn_unused_result)) 882#else 883# define GTEST_MUST_USE_RESULT_ 884#endif // __GNUC__ && (GTEST_GCC_VER_ >= 30400) && !COMPILER_ICC 885 886#if GTEST_LANG_CXX11 887# define GTEST_MOVE_(x) ::std::move(x) // NOLINT 888#else 889# define GTEST_MOVE_(x) x 890#endif 891 892// MS C++ compiler emits warning when a conditional expression is compile time 893// constant. In some contexts this warning is false positive and needs to be 894// suppressed. Use the following two macros in such cases: 895// 896// GTEST_INTENTIONAL_CONST_COND_PUSH_() 897// while (true) { 898// GTEST_INTENTIONAL_CONST_COND_POP_() 899// } 900# define GTEST_INTENTIONAL_CONST_COND_PUSH_() \ 901 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127) 902# define GTEST_INTENTIONAL_CONST_COND_POP_() \ 903 GTEST_DISABLE_MSC_WARNINGS_POP_() 904 905// Determine whether the compiler supports Microsoft's Structured Exception 906// Handling. This is supported by several Windows compilers but generally 907// does not exist on any other system. 908#ifndef GTEST_HAS_SEH 909// The user didn't tell us, so we need to figure it out. 910 911# if defined(_MSC_VER) || defined(__BORLANDC__) 912// These two compilers are known to support SEH. 913# define GTEST_HAS_SEH 1 914# else 915// Assume no SEH. 916# define GTEST_HAS_SEH 0 917# endif 918 919#define GTEST_IS_THREADSAFE \ 920 (0 \ 921 || (GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT) \ 922 || GTEST_HAS_PTHREAD) 923 924#endif // GTEST_HAS_SEH 925 926#ifdef _MSC_VER 927 928# if GTEST_LINKED_AS_SHARED_LIBRARY 929# define GTEST_API_ __declspec(dllimport) 930# elif GTEST_CREATE_SHARED_LIBRARY 931# define GTEST_API_ __declspec(dllexport) 932# endif 933 934#endif // _MSC_VER 935 936#ifndef GTEST_API_ 937# define GTEST_API_ 938#endif 939 940#ifdef __GNUC__ 941// Ask the compiler to never inline a given function. 942# define GTEST_NO_INLINE_ __attribute__((noinline)) 943#else 944# define GTEST_NO_INLINE_ 945#endif 946 947// _LIBCPP_VERSION is defined by the libc++ library from the LLVM project. 948#if defined(__GLIBCXX__) || defined(_LIBCPP_VERSION) 949# define GTEST_HAS_CXXABI_H_ 1 950#else 951# define GTEST_HAS_CXXABI_H_ 0 952#endif 953 954// A function level attribute to disable checking for use of uninitialized 955// memory when built with MemorySanitizer. 956#if defined(__clang__) 957# if __has_feature(memory_sanitizer) 958# define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ \ 959 __attribute__((no_sanitize_memory)) 960# else 961# define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ 962# endif // __has_feature(memory_sanitizer) 963#else 964# define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ 965#endif // __clang__ 966 967// A function level attribute to disable AddressSanitizer instrumentation. 968#if defined(__clang__) 969# if __has_feature(address_sanitizer) 970# define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ \ 971 __attribute__((no_sanitize_address)) 972# else 973# define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ 974# endif // __has_feature(address_sanitizer) 975#else 976# define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ 977#endif // __clang__ 978 979// A function level attribute to disable ThreadSanitizer instrumentation. 980#if defined(__clang__) 981# if __has_feature(thread_sanitizer) 982# define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ \ 983 __attribute__((no_sanitize_thread)) 984# else 985# define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ 986# endif // __has_feature(thread_sanitizer) 987#else 988# define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ 989#endif // __clang__ 990 991namespace testing { 992 993class Message; 994 995#if defined(GTEST_TUPLE_NAMESPACE_) 996// Import tuple and friends into the ::testing namespace. 997// It is part of our interface, having them in ::testing allows us to change 998// their types as needed. 999using GTEST_TUPLE_NAMESPACE_::get; 1000using GTEST_TUPLE_NAMESPACE_::make_tuple; 1001using GTEST_TUPLE_NAMESPACE_::tuple; 1002using GTEST_TUPLE_NAMESPACE_::tuple_size; 1003using GTEST_TUPLE_NAMESPACE_::tuple_element; 1004#endif // defined(GTEST_TUPLE_NAMESPACE_) 1005 1006namespace internal { 1007 1008// A secret type that Google Test users don't know about. It has no 1009// definition on purpose. Therefore it's impossible to create a 1010// Secret object, which is what we want. 1011class Secret; 1012 1013// The GTEST_COMPILE_ASSERT_ macro can be used to verify that a compile time 1014// expression is true. For example, you could use it to verify the 1015// size of a static array: 1016// 1017// GTEST_COMPILE_ASSERT_(GTEST_ARRAY_SIZE_(names) == NUM_NAMES, 1018// names_incorrect_size); 1019// 1020// or to make sure a struct is smaller than a certain size: 1021// 1022// GTEST_COMPILE_ASSERT_(sizeof(foo) < 128, foo_too_large); 1023// 1024// The second argument to the macro is the name of the variable. If 1025// the expression is false, most compilers will issue a warning/error 1026// containing the name of the variable. 1027 1028template <bool> 1029struct CompileAssert { 1030}; 1031 1032#define GTEST_COMPILE_ASSERT_(expr, msg) \ 1033 typedef ::testing::internal::CompileAssert<(static_cast<bool>(expr))> \ 1034 msg[static_cast<bool>(expr) ? 1 : -1] GTEST_ATTRIBUTE_UNUSED_ 1035 1036// Implementation details of GTEST_COMPILE_ASSERT_: 1037// 1038// - GTEST_COMPILE_ASSERT_ works by defining an array type that has -1 1039// elements (and thus is invalid) when the expression is false. 1040// 1041// - The simpler definition 1042// 1043// #define GTEST_COMPILE_ASSERT_(expr, msg) typedef char msg[(expr) ? 1 : -1] 1044// 1045// does not work, as gcc supports variable-length arrays whose sizes 1046// are determined at run-time (this is gcc's extension and not part 1047// of the C++ standard). As a result, gcc fails to reject the 1048// following code with the simple definition: 1049// 1050// int foo; 1051// GTEST_COMPILE_ASSERT_(foo, msg); // not supposed to compile as foo is 1052// // not a compile-time constant. 1053// 1054// - By using the type CompileAssert<(bool(expr))>, we ensures that 1055// expr is a compile-time constant. (Template arguments must be 1056// determined at compile-time.) 1057// 1058// - The outter parentheses in CompileAssert<(bool(expr))> are necessary 1059// to work around a bug in gcc 3.4.4 and 4.0.1. If we had written 1060// 1061// CompileAssert<bool(expr)> 1062// 1063// instead, these compilers will refuse to compile 1064// 1065// GTEST_COMPILE_ASSERT_(5 > 0, some_message); 1066// 1067// (They seem to think the ">" in "5 > 0" marks the end of the 1068// template argument list.) 1069// 1070// - The array size is (bool(expr) ? 1 : -1), instead of simply 1071// 1072// ((expr) ? 1 : -1). 1073// 1074// This is to avoid running into a bug in MS VC 7.1, which 1075// causes ((0.0) ? 1 : -1) to incorrectly evaluate to 1. 1076 1077// StaticAssertTypeEqHelper is used by StaticAssertTypeEq defined in gtest.h. 1078// 1079// This template is declared, but intentionally undefined. 1080template <typename T1, typename T2> 1081struct StaticAssertTypeEqHelper; 1082 1083template <typename T> 1084struct StaticAssertTypeEqHelper<T, T> { 1085 enum { value = true }; 1086}; 1087 1088// Evaluates to the number of elements in 'array'. 1089#define GTEST_ARRAY_SIZE_(array) (sizeof(array) / sizeof(array[0])) 1090 1091#if GTEST_HAS_GLOBAL_STRING 1092typedef ::string string; 1093#else 1094typedef ::std::string string; 1095#endif // GTEST_HAS_GLOBAL_STRING 1096 1097#if GTEST_HAS_GLOBAL_WSTRING 1098typedef ::wstring wstring; 1099#elif GTEST_HAS_STD_WSTRING 1100typedef ::std::wstring wstring; 1101#endif // GTEST_HAS_GLOBAL_WSTRING 1102 1103// A helper for suppressing warnings on constant condition. It just 1104// returns 'condition'. 1105GTEST_API_ bool IsTrue(bool condition); 1106 1107// Defines scoped_ptr. 1108 1109// This implementation of scoped_ptr is PARTIAL - it only contains 1110// enough stuff to satisfy Google Test's need. 1111template <typename T> 1112class scoped_ptr { 1113 public: 1114 typedef T element_type; 1115 1116 explicit scoped_ptr(T* p = NULL) : ptr_(p) {} 1117 ~scoped_ptr() { reset(); } 1118 1119 T& operator*() const { return *ptr_; } 1120 T* operator->() const { return ptr_; } 1121 T* get() const { return ptr_; } 1122 1123 T* release() { 1124 T* const ptr = ptr_; 1125 ptr_ = NULL; 1126 return ptr; 1127 } 1128 1129 void reset(T* p = NULL) { 1130 if (p != ptr_) { 1131 if (IsTrue(sizeof(T) > 0)) { // Makes sure T is a complete type. 1132 delete ptr_; 1133 } 1134 ptr_ = p; 1135 } 1136 } 1137 1138 friend void swap(scoped_ptr& a, scoped_ptr& b) { 1139 using std::swap; 1140 swap(a.ptr_, b.ptr_); 1141 } 1142 1143 private: 1144 T* ptr_; 1145 1146 GTEST_DISALLOW_COPY_AND_ASSIGN_(scoped_ptr); 1147}; 1148 1149// Defines RE. 1150 1151// A simple C++ wrapper for <regex.h>. It uses the POSIX Extended 1152// Regular Expression syntax. 1153class GTEST_API_ RE { 1154 public: 1155 // A copy constructor is required by the Standard to initialize object 1156 // references from r-values. 1157 RE(const RE& other) { Init(other.pattern()); } 1158 1159 // Constructs an RE from a string. 1160 RE(const ::std::string& regex) { Init(regex.c_str()); } // NOLINT 1161 1162#if GTEST_HAS_GLOBAL_STRING 1163 1164 RE(const ::string& regex) { Init(regex.c_str()); } // NOLINT 1165 1166#endif // GTEST_HAS_GLOBAL_STRING 1167 1168 RE(const char* regex) { Init(regex); } // NOLINT 1169 ~RE(); 1170 1171 // Returns the string representation of the regex. 1172 const char* pattern() const { return pattern_; } 1173 1174 // FullMatch(str, re) returns true iff regular expression re matches 1175 // the entire str. 1176 // PartialMatch(str, re) returns true iff regular expression re 1177 // matches a substring of str (including str itself). 1178 // 1179 // TODO(wan@google.com): make FullMatch() and PartialMatch() work 1180 // when str contains NUL characters. 1181 static bool FullMatch(const ::std::string& str, const RE& re) { 1182 return FullMatch(str.c_str(), re); 1183 } 1184 static bool PartialMatch(const ::std::string& str, const RE& re) { 1185 return PartialMatch(str.c_str(), re); 1186 } 1187 1188#if GTEST_HAS_GLOBAL_STRING 1189 1190 static bool FullMatch(const ::string& str, const RE& re) { 1191 return FullMatch(str.c_str(), re); 1192 } 1193 static bool PartialMatch(const ::string& str, const RE& re) { 1194 return PartialMatch(str.c_str(), re); 1195 } 1196 1197#endif // GTEST_HAS_GLOBAL_STRING 1198 1199 static bool FullMatch(const char* str, const RE& re); 1200 static bool PartialMatch(const char* str, const RE& re); 1201 1202 private: 1203 void Init(const char* regex); 1204 1205 // We use a const char* instead of an std::string, as Google Test used to be 1206 // used where std::string is not available. TODO(wan@google.com): change to 1207 // std::string. 1208 const char* pattern_; 1209 bool is_valid_; 1210 1211#if GTEST_USES_POSIX_RE 1212 1213 regex_t full_regex_; // For FullMatch(). 1214 regex_t partial_regex_; // For PartialMatch(). 1215 1216#else // GTEST_USES_SIMPLE_RE 1217 1218 const char* full_pattern_; // For FullMatch(); 1219 1220#endif 1221 1222 GTEST_DISALLOW_ASSIGN_(RE); 1223}; 1224 1225// Formats a source file path and a line number as they would appear 1226// in an error message from the compiler used to compile this code. 1227GTEST_API_ ::std::string FormatFileLocation(const char* file, int line); 1228 1229// Formats a file location for compiler-independent XML output. 1230// Although this function is not platform dependent, we put it next to 1231// FormatFileLocation in order to contrast the two functions. 1232GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(const char* file, 1233 int line); 1234 1235// Defines logging utilities: 1236// GTEST_LOG_(severity) - logs messages at the specified severity level. The 1237// message itself is streamed into the macro. 1238// LogToStderr() - directs all log messages to stderr. 1239// FlushInfoLog() - flushes informational log messages. 1240 1241enum GTestLogSeverity { 1242 GTEST_INFO, 1243 GTEST_WARNING, 1244 GTEST_ERROR, 1245 GTEST_FATAL 1246}; 1247 1248// Formats log entry severity, provides a stream object for streaming the 1249// log message, and terminates the message with a newline when going out of 1250// scope. 1251class GTEST_API_ GTestLog { 1252 public: 1253 GTestLog(GTestLogSeverity severity, const char* file, int line); 1254 1255 // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program. 1256 ~GTestLog(); 1257 1258 ::std::ostream& GetStream() { return ::std::cerr; } 1259 1260 private: 1261 const GTestLogSeverity severity_; 1262 1263 GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestLog); 1264}; 1265 1266#define GTEST_LOG_(severity) \ 1267 ::testing::internal::GTestLog(::testing::internal::GTEST_##severity, \ 1268 __FILE__, __LINE__).GetStream() 1269 1270inline void LogToStderr() {} 1271inline void FlushInfoLog() { fflush(NULL); } 1272 1273// INTERNAL IMPLEMENTATION - DO NOT USE. 1274// 1275// GTEST_CHECK_ is an all-mode assert. It aborts the program if the condition 1276// is not satisfied. 1277// Synopsys: 1278// GTEST_CHECK_(boolean_condition); 1279// or 1280// GTEST_CHECK_(boolean_condition) << "Additional message"; 1281// 1282// This checks the condition and if the condition is not satisfied 1283// it prints message about the condition violation, including the 1284// condition itself, plus additional message streamed into it, if any, 1285// and then it aborts the program. It aborts the program irrespective of 1286// whether it is built in the debug mode or not. 1287#define GTEST_CHECK_(condition) \ 1288 GTEST_AMBIGUOUS_ELSE_BLOCKER_ \ 1289 if (::testing::internal::IsTrue(condition)) \ 1290 ; \ 1291 else \ 1292 GTEST_LOG_(FATAL) << "Condition " #condition " failed. " 1293 1294// An all-mode assert to verify that the given POSIX-style function 1295// call returns 0 (indicating success). Known limitation: this 1296// doesn't expand to a balanced 'if' statement, so enclose the macro 1297// in {} if you need to use it as the only statement in an 'if' 1298// branch. 1299#define GTEST_CHECK_POSIX_SUCCESS_(posix_call) \ 1300 if (const int gtest_error = (posix_call)) \ 1301 GTEST_LOG_(FATAL) << #posix_call << "failed with error " \ 1302 << gtest_error 1303 1304// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE. 1305// 1306// Use ImplicitCast_ as a safe version of static_cast for upcasting in 1307// the type hierarchy (e.g. casting a Foo* to a SuperclassOfFoo* or a 1308// const Foo*). When you use ImplicitCast_, the compiler checks that 1309// the cast is safe. Such explicit ImplicitCast_s are necessary in 1310// surprisingly many situations where C++ demands an exact type match 1311// instead of an argument type convertable to a target type. 1312// 1313// The syntax for using ImplicitCast_ is the same as for static_cast: 1314// 1315// ImplicitCast_<ToType>(expr) 1316// 1317// ImplicitCast_ would have been part of the C++ standard library, 1318// but the proposal was submitted too late. It will probably make 1319// its way into the language in the future. 1320// 1321// This relatively ugly name is intentional. It prevents clashes with 1322// similar functions users may have (e.g., implicit_cast). The internal 1323// namespace alone is not enough because the function can be found by ADL. 1324template<typename To> 1325inline To ImplicitCast_(To x) { return x; } 1326 1327// When you upcast (that is, cast a pointer from type Foo to type 1328// SuperclassOfFoo), it's fine to use ImplicitCast_<>, since upcasts 1329// always succeed. When you downcast (that is, cast a pointer from 1330// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because 1331// how do you know the pointer is really of type SubclassOfFoo? It 1332// could be a bare Foo, or of type DifferentSubclassOfFoo. Thus, 1333// when you downcast, you should use this macro. In debug mode, we 1334// use dynamic_cast<> to double-check the downcast is legal (we die 1335// if it's not). In normal mode, we do the efficient static_cast<> 1336// instead. Thus, it's important to test in debug mode to make sure 1337// the cast is legal! 1338// This is the only place in the code we should use dynamic_cast<>. 1339// In particular, you SHOULDN'T be using dynamic_cast<> in order to 1340// do RTTI (eg code like this: 1341// if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo); 1342// if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo); 1343// You should design the code some other way not to need this. 1344// 1345// This relatively ugly name is intentional. It prevents clashes with 1346// similar functions users may have (e.g., down_cast). The internal 1347// namespace alone is not enough because the function can be found by ADL. 1348template<typename To, typename From> // use like this: DownCast_<T*>(foo); 1349inline To DownCast_(From* f) { // so we only accept pointers 1350 // Ensures that To is a sub-type of From *. This test is here only 1351 // for compile-time type checking, and has no overhead in an 1352 // optimized build at run-time, as it will be optimized away 1353 // completely. 1354 GTEST_INTENTIONAL_CONST_COND_PUSH_() 1355 if (false) { 1356 GTEST_INTENTIONAL_CONST_COND_POP_() 1357 const To to = NULL; 1358 ::testing::internal::ImplicitCast_<From*>(to); 1359 } 1360 1361#if GTEST_HAS_RTTI 1362 // RTTI: debug mode only! 1363 GTEST_CHECK_(f == NULL || dynamic_cast<To>(f) != NULL); 1364#endif 1365 return static_cast<To>(f); 1366} 1367 1368// Downcasts the pointer of type Base to Derived. 1369// Derived must be a subclass of Base. The parameter MUST 1370// point to a class of type Derived, not any subclass of it. 1371// When RTTI is available, the function performs a runtime 1372// check to enforce this. 1373template <class Derived, class Base> 1374Derived* CheckedDowncastToActualType(Base* base) { 1375#if GTEST_HAS_RTTI 1376 GTEST_CHECK_(typeid(*base) == typeid(Derived)); 1377 return dynamic_cast<Derived*>(base); // NOLINT 1378#else 1379 return static_cast<Derived*>(base); // Poor man's downcast. 1380#endif 1381} 1382 1383#if GTEST_HAS_STREAM_REDIRECTION 1384 1385// Defines the stderr capturer: 1386// CaptureStdout - starts capturing stdout. 1387// GetCapturedStdout - stops capturing stdout and returns the captured string. 1388// CaptureStderr - starts capturing stderr. 1389// GetCapturedStderr - stops capturing stderr and returns the captured string. 1390// 1391GTEST_API_ void CaptureStdout(); 1392GTEST_API_ std::string GetCapturedStdout(); 1393GTEST_API_ void CaptureStderr(); 1394GTEST_API_ std::string GetCapturedStderr(); 1395 1396#endif // GTEST_HAS_STREAM_REDIRECTION 1397 1398 1399#if GTEST_HAS_DEATH_TEST 1400 1401const ::std::vector<testing::internal::string>& GetInjectableArgvs(); 1402void SetInjectableArgvs(const ::std::vector<testing::internal::string>* 1403 new_argvs); 1404 1405// A copy of all command line arguments. Set by InitGoogleTest(). 1406extern ::std::vector<testing::internal::string> g_argvs; 1407 1408#endif // GTEST_HAS_DEATH_TEST 1409 1410// Defines synchronization primitives. 1411#if GTEST_IS_THREADSAFE 1412# if GTEST_HAS_PTHREAD 1413// Sleeps for (roughly) n milliseconds. This function is only for testing 1414// Google Test's own constructs. Don't use it in user tests, either 1415// directly or indirectly. 1416inline void SleepMilliseconds(int n) { 1417 const timespec time = { 1418 0, // 0 seconds. 1419 n * 1000L * 1000L, // And n ms. 1420 }; 1421 nanosleep(&time, NULL); 1422} 1423# endif // GTEST_HAS_PTHREAD 1424 1425# if 0 // OS detection 1426# elif GTEST_HAS_PTHREAD 1427// Allows a controller thread to pause execution of newly created 1428// threads until notified. Instances of this class must be created 1429// and destroyed in the controller thread. 1430// 1431// This class is only for testing Google Test's own constructs. Do not 1432// use it in user tests, either directly or indirectly. 1433class Notification { 1434 public: 1435 Notification() : notified_(false) { 1436 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL)); 1437 } 1438 ~Notification() { 1439 pthread_mutex_destroy(&mutex_); 1440 } 1441 1442 // Notifies all threads created with this notification to start. Must 1443 // be called from the controller thread. 1444 void Notify() { 1445 pthread_mutex_lock(&mutex_); 1446 notified_ = true; 1447 pthread_mutex_unlock(&mutex_); 1448 } 1449 1450 // Blocks until the controller thread notifies. Must be called from a test 1451 // thread. 1452 void WaitForNotification() { 1453 for (;;) { 1454 pthread_mutex_lock(&mutex_); 1455 const bool notified = notified_; 1456 pthread_mutex_unlock(&mutex_); 1457 if (notified) 1458 break; 1459 SleepMilliseconds(10); 1460 } 1461 } 1462 1463 private: 1464 pthread_mutex_t mutex_; 1465 bool notified_; 1466 1467 GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification); 1468}; 1469 1470# elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT 1471 1472GTEST_API_ void SleepMilliseconds(int n); 1473 1474// Provides leak-safe Windows kernel handle ownership. 1475// Used in death tests and in threading support. 1476class GTEST_API_ AutoHandle { 1477 public: 1478 // Assume that Win32 HANDLE type is equivalent to void*. Doing so allows us to 1479 // avoid including <windows.h> in this header file. Including <windows.h> is 1480 // undesirable because it defines a lot of symbols and macros that tend to 1481 // conflict with client code. This assumption is verified by 1482 // WindowsTypesTest.HANDLEIsVoidStar. 1483 typedef void* Handle; 1484 AutoHandle(); 1485 explicit AutoHandle(Handle handle); 1486 1487 ~AutoHandle(); 1488 1489 Handle Get() const; 1490 void Reset(); 1491 void Reset(Handle handle); 1492 1493 private: 1494 // Returns true iff the handle is a valid handle object that can be closed. 1495 bool IsCloseable() const; 1496 1497 Handle handle_; 1498 1499 GTEST_DISALLOW_COPY_AND_ASSIGN_(AutoHandle); 1500}; 1501 1502// Allows a controller thread to pause execution of newly created 1503// threads until notified. Instances of this class must be created 1504// and destroyed in the controller thread. 1505// 1506// This class is only for testing Google Test's own constructs. Do not 1507// use it in user tests, either directly or indirectly. 1508class GTEST_API_ Notification { 1509 public: 1510 Notification(); 1511 void Notify(); 1512 void WaitForNotification(); 1513 1514 private: 1515 AutoHandle event_; 1516 1517 GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification); 1518}; 1519# endif // OS detection 1520 1521// On MinGW, we can have both GTEST_OS_WINDOWS and GTEST_HAS_PTHREAD 1522// defined, but we don't want to use MinGW's pthreads implementation, which 1523// has conformance problems with some versions of the POSIX standard. 1524# if GTEST_HAS_PTHREAD && !GTEST_OS_WINDOWS_MINGW 1525 1526// As a C-function, ThreadFuncWithCLinkage cannot be templated itself. 1527// Consequently, it cannot select a correct instantiation of ThreadWithParam 1528// in order to call its Run(). Introducing ThreadWithParamBase as a 1529// non-templated base class for ThreadWithParam allows us to bypass this 1530// problem. 1531class ThreadWithParamBase { 1532 public: 1533 virtual ~ThreadWithParamBase() {} 1534 virtual void Run() = 0; 1535}; 1536 1537// pthread_create() accepts a pointer to a function type with the C linkage. 1538// According to the Standard (7.5/1), function types with different linkages 1539// are different even if they are otherwise identical. Some compilers (for 1540// example, SunStudio) treat them as different types. Since class methods 1541// cannot be defined with C-linkage we need to define a free C-function to 1542// pass into pthread_create(). 1543extern "C" inline void* ThreadFuncWithCLinkage(void* thread) { 1544 static_cast<ThreadWithParamBase*>(thread)->Run(); 1545 return NULL; 1546} 1547 1548// Helper class for testing Google Test's multi-threading constructs. 1549// To use it, write: 1550// 1551// void ThreadFunc(int param) { /* Do things with param */ } 1552// Notification thread_can_start; 1553// ... 1554// // The thread_can_start parameter is optional; you can supply NULL. 1555// ThreadWithParam<int> thread(&ThreadFunc, 5, &thread_can_start); 1556// thread_can_start.Notify(); 1557// 1558// These classes are only for testing Google Test's own constructs. Do 1559// not use them in user tests, either directly or indirectly. 1560template <typename T> 1561class ThreadWithParam : public ThreadWithParamBase { 1562 public: 1563 typedef void UserThreadFunc(T); 1564 1565 ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start) 1566 : func_(func), 1567 param_(param), 1568 thread_can_start_(thread_can_start), 1569 finished_(false) { 1570 ThreadWithParamBase* const base = this; 1571 // The thread can be created only after all fields except thread_ 1572 // have been initialized. 1573 GTEST_CHECK_POSIX_SUCCESS_( 1574 pthread_create(&thread_, 0, &ThreadFuncWithCLinkage, base)); 1575 } 1576 ~ThreadWithParam() { Join(); } 1577 1578 void Join() { 1579 if (!finished_) { 1580 GTEST_CHECK_POSIX_SUCCESS_(pthread_join(thread_, 0)); 1581 finished_ = true; 1582 } 1583 } 1584 1585 virtual void Run() { 1586 if (thread_can_start_ != NULL) 1587 thread_can_start_->WaitForNotification(); 1588 func_(param_); 1589 } 1590 1591 private: 1592 UserThreadFunc* const func_; // User-supplied thread function. 1593 const T param_; // User-supplied parameter to the thread function. 1594 // When non-NULL, used to block execution until the controller thread 1595 // notifies. 1596 Notification* const thread_can_start_; 1597 bool finished_; // true iff we know that the thread function has finished. 1598 pthread_t thread_; // The native thread object. 1599 1600 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam); 1601}; 1602# endif // GTEST_HAS_PTHREAD && !GTEST_OS_WINDOWS_MINGW 1603 1604# if 0 // OS detection 1605# elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT 1606 1607// Mutex implements mutex on Windows platforms. It is used in conjunction 1608// with class MutexLock: 1609// 1610// Mutex mutex; 1611// ... 1612// MutexLock lock(&mutex); // Acquires the mutex and releases it at the 1613// // end of the current scope. 1614// 1615// A static Mutex *must* be defined or declared using one of the following 1616// macros: 1617// GTEST_DEFINE_STATIC_MUTEX_(g_some_mutex); 1618// GTEST_DECLARE_STATIC_MUTEX_(g_some_mutex); 1619// 1620// (A non-static Mutex is defined/declared in the usual way). 1621class GTEST_API_ Mutex { 1622 public: 1623 enum MutexType { kStatic = 0, kDynamic = 1 }; 1624 // We rely on kStaticMutex being 0 as it is to what the linker initializes 1625 // type_ in static mutexes. critical_section_ will be initialized lazily 1626 // in ThreadSafeLazyInit(). 1627 enum StaticConstructorSelector { kStaticMutex = 0 }; 1628 1629 // This constructor intentionally does nothing. It relies on type_ being 1630 // statically initialized to 0 (effectively setting it to kStatic) and on 1631 // ThreadSafeLazyInit() to lazily initialize the rest of the members. 1632 explicit Mutex(StaticConstructorSelector /*dummy*/) {} 1633 1634 Mutex(); 1635 ~Mutex(); 1636 1637 void Lock(); 1638 1639 void Unlock(); 1640 1641 // Does nothing if the current thread holds the mutex. Otherwise, crashes 1642 // with high probability. 1643 void AssertHeld(); 1644 1645 private: 1646 // Initializes owner_thread_id_ and critical_section_ in static mutexes. 1647 void ThreadSafeLazyInit(); 1648 1649 // Per http://blogs.msdn.com/b/oldnewthing/archive/2004/02/23/78395.aspx, 1650 // we assume that 0 is an invalid value for thread IDs. 1651 unsigned int owner_thread_id_; 1652 1653 // For static mutexes, we rely on these members being initialized to zeros 1654 // by the linker. 1655 MutexType type_; 1656 long critical_section_init_phase_; // NOLINT 1657 _RTL_CRITICAL_SECTION* critical_section_; 1658 1659 GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex); 1660}; 1661 1662# define GTEST_DECLARE_STATIC_MUTEX_(mutex) \ 1663 extern ::testing::internal::Mutex mutex 1664 1665# define GTEST_DEFINE_STATIC_MUTEX_(mutex) \ 1666 ::testing::internal::Mutex mutex(::testing::internal::Mutex::kStaticMutex) 1667 1668// We cannot name this class MutexLock because the ctor declaration would 1669// conflict with a macro named MutexLock, which is defined on some 1670// platforms. That macro is used as a defensive measure to prevent against 1671// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than 1672// "MutexLock l(&mu)". Hence the typedef trick below. 1673class GTestMutexLock { 1674 public: 1675 explicit GTestMutexLock(Mutex* mutex) 1676 : mutex_(mutex) { mutex_->Lock(); } 1677 1678 ~GTestMutexLock() { mutex_->Unlock(); } 1679 1680 private: 1681 Mutex* const mutex_; 1682 1683 GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock); 1684}; 1685 1686typedef GTestMutexLock MutexLock; 1687 1688// Base class for ValueHolder<T>. Allows a caller to hold and delete a value 1689// without knowing its type. 1690class ThreadLocalValueHolderBase { 1691 public: 1692 virtual ~ThreadLocalValueHolderBase() {} 1693}; 1694 1695// Provides a way for a thread to send notifications to a ThreadLocal 1696// regardless of its parameter type. 1697class ThreadLocalBase { 1698 public: 1699 // Creates a new ValueHolder<T> object holding a default value passed to 1700 // this ThreadLocal<T>'s constructor and returns it. It is the caller's 1701 // responsibility not to call this when the ThreadLocal<T> instance already 1702 // has a value on the current thread. 1703 virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const = 0; 1704 1705 protected: 1706 ThreadLocalBase() {} 1707 virtual ~ThreadLocalBase() {} 1708 1709 private: 1710 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocalBase); 1711}; 1712 1713// Maps a thread to a set of ThreadLocals that have values instantiated on that 1714// thread and notifies them when the thread exits. A ThreadLocal instance is 1715// expected to persist until all threads it has values on have terminated. 1716class GTEST_API_ ThreadLocalRegistry { 1717 public: 1718 // Registers thread_local_instance as having value on the current thread. 1719 // Returns a value that can be used to identify the thread from other threads. 1720 static ThreadLocalValueHolderBase* GetValueOnCurrentThread( 1721 const ThreadLocalBase* thread_local_instance); 1722 1723 // Invoked when a ThreadLocal instance is destroyed. 1724 static void OnThreadLocalDestroyed( 1725 const ThreadLocalBase* thread_local_instance); 1726}; 1727 1728class GTEST_API_ ThreadWithParamBase { 1729 public: 1730 void Join(); 1731 1732 protected: 1733 class Runnable { 1734 public: 1735 virtual ~Runnable() {} 1736 virtual void Run() = 0; 1737 }; 1738 1739 ThreadWithParamBase(Runnable *runnable, Notification* thread_can_start); 1740 virtual ~ThreadWithParamBase(); 1741 1742 private: 1743 AutoHandle thread_; 1744}; 1745 1746// Helper class for testing Google Test's multi-threading constructs. 1747template <typename T> 1748class ThreadWithParam : public ThreadWithParamBase { 1749 public: 1750 typedef void UserThreadFunc(T); 1751 1752 ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start) 1753 : ThreadWithParamBase(new RunnableImpl(func, param), thread_can_start) { 1754 } 1755 virtual ~ThreadWithParam() {} 1756 1757 private: 1758 class RunnableImpl : public Runnable { 1759 public: 1760 RunnableImpl(UserThreadFunc* func, T param) 1761 : func_(func), 1762 param_(param) { 1763 } 1764 virtual ~RunnableImpl() {} 1765 virtual void Run() { 1766 func_(param_); 1767 } 1768 1769 private: 1770 UserThreadFunc* const func_; 1771 const T param_; 1772 1773 GTEST_DISALLOW_COPY_AND_ASSIGN_(RunnableImpl); 1774 }; 1775 1776 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam); 1777}; 1778 1779// Implements thread-local storage on Windows systems. 1780// 1781// // Thread 1 1782// ThreadLocal<int> tl(100); // 100 is the default value for each thread. 1783// 1784// // Thread 2 1785// tl.set(150); // Changes the value for thread 2 only. 1786// EXPECT_EQ(150, tl.get()); 1787// 1788// // Thread 1 1789// EXPECT_EQ(100, tl.get()); // In thread 1, tl has the original value. 1790// tl.set(200); 1791// EXPECT_EQ(200, tl.get()); 1792// 1793// The template type argument T must have a public copy constructor. 1794// In addition, the default ThreadLocal constructor requires T to have 1795// a public default constructor. 1796// 1797// The users of a TheadLocal instance have to make sure that all but one 1798// threads (including the main one) using that instance have exited before 1799// destroying it. Otherwise, the per-thread objects managed for them by the 1800// ThreadLocal instance are not guaranteed to be destroyed on all platforms. 1801// 1802// Google Test only uses global ThreadLocal objects. That means they 1803// will die after main() has returned. Therefore, no per-thread 1804// object managed by Google Test will be leaked as long as all threads 1805// using Google Test have exited when main() returns. 1806template <typename T> 1807class ThreadLocal : public ThreadLocalBase { 1808 public: 1809 ThreadLocal() : default_() {} 1810 explicit ThreadLocal(const T& value) : default_(value) {} 1811 1812 ~ThreadLocal() { ThreadLocalRegistry::OnThreadLocalDestroyed(this); } 1813 1814 T* pointer() { return GetOrCreateValue(); } 1815 const T* pointer() const { return GetOrCreateValue(); } 1816 const T& get() const { return *pointer(); } 1817 void set(const T& value) { *pointer() = value; } 1818 1819 private: 1820 // Holds a value of T. Can be deleted via its base class without the caller 1821 // knowing the type of T. 1822 class ValueHolder : public ThreadLocalValueHolderBase { 1823 public: 1824 explicit ValueHolder(const T& value) : value_(value) {} 1825 1826 T* pointer() { return &value_; } 1827 1828 private: 1829 T value_; 1830 GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder); 1831 }; 1832 1833 1834 T* GetOrCreateValue() const { 1835 return static_cast<ValueHolder*>( 1836 ThreadLocalRegistry::GetValueOnCurrentThread(this))->pointer(); 1837 } 1838 1839 virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const { 1840 return new ValueHolder(default_); 1841 } 1842 1843 const T default_; // The default value for each thread. 1844 1845 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal); 1846}; 1847 1848# elif GTEST_HAS_PTHREAD 1849 1850// MutexBase and Mutex implement mutex on pthreads-based platforms. 1851class MutexBase { 1852 public: 1853 // Acquires this mutex. 1854 void Lock() { 1855 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&mutex_)); 1856 owner_ = pthread_self(); 1857 has_owner_ = true; 1858 } 1859 1860 // Releases this mutex. 1861 void Unlock() { 1862 // Since the lock is being released the owner_ field should no longer be 1863 // considered valid. We don't protect writing to has_owner_ here, as it's 1864 // the caller's responsibility to ensure that the current thread holds the 1865 // mutex when this is called. 1866 has_owner_ = false; 1867 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&mutex_)); 1868 } 1869 1870 // Does nothing if the current thread holds the mutex. Otherwise, crashes 1871 // with high probability. 1872 void AssertHeld() const { 1873 GTEST_CHECK_(has_owner_ && pthread_equal(owner_, pthread_self())) 1874 << "The current thread is not holding the mutex @" << this; 1875 } 1876 1877 // A static mutex may be used before main() is entered. It may even 1878 // be used before the dynamic initialization stage. Therefore we 1879 // must be able to initialize a static mutex object at link time. 1880 // This means MutexBase has to be a POD and its member variables 1881 // have to be public. 1882 public: 1883 pthread_mutex_t mutex_; // The underlying pthread mutex. 1884 // has_owner_ indicates whether the owner_ field below contains a valid thread 1885 // ID and is therefore safe to inspect (e.g., to use in pthread_equal()). All 1886 // accesses to the owner_ field should be protected by a check of this field. 1887 // An alternative might be to memset() owner_ to all zeros, but there's no 1888 // guarantee that a zero'd pthread_t is necessarily invalid or even different 1889 // from pthread_self(). 1890 bool has_owner_; 1891 pthread_t owner_; // The thread holding the mutex. 1892}; 1893 1894// Forward-declares a static mutex. 1895# define GTEST_DECLARE_STATIC_MUTEX_(mutex) \ 1896 extern ::testing::internal::MutexBase mutex 1897 1898// Defines and statically (i.e. at link time) initializes a static mutex. 1899// The initialization list here does not explicitly initialize each field, 1900// instead relying on default initialization for the unspecified fields. In 1901// particular, the owner_ field (a pthread_t) is not explicitly initialized. 1902// This allows initialization to work whether pthread_t is a scalar or struct. 1903// The flag -Wmissing-field-initializers must not be specified for this to work. 1904# define GTEST_DEFINE_STATIC_MUTEX_(mutex) \ 1905 ::testing::internal::MutexBase mutex = { PTHREAD_MUTEX_INITIALIZER, false } 1906 1907// The Mutex class can only be used for mutexes created at runtime. It 1908// shares its API with MutexBase otherwise. 1909class Mutex : public MutexBase { 1910 public: 1911 Mutex() { 1912 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL)); 1913 has_owner_ = false; 1914 } 1915 ~Mutex() { 1916 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&mutex_)); 1917 } 1918 1919 private: 1920 GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex); 1921}; 1922 1923// We cannot name this class MutexLock because the ctor declaration would 1924// conflict with a macro named MutexLock, which is defined on some 1925// platforms. That macro is used as a defensive measure to prevent against 1926// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than 1927// "MutexLock l(&mu)". Hence the typedef trick below. 1928class GTestMutexLock { 1929 public: 1930 explicit GTestMutexLock(MutexBase* mutex) 1931 : mutex_(mutex) { mutex_->Lock(); } 1932 1933 ~GTestMutexLock() { mutex_->Unlock(); } 1934 1935 private: 1936 MutexBase* const mutex_; 1937 1938 GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock); 1939}; 1940 1941typedef GTestMutexLock MutexLock; 1942 1943// Helpers for ThreadLocal. 1944 1945// pthread_key_create() requires DeleteThreadLocalValue() to have 1946// C-linkage. Therefore it cannot be templatized to access 1947// ThreadLocal<T>. Hence the need for class 1948// ThreadLocalValueHolderBase. 1949class ThreadLocalValueHolderBase { 1950 public: 1951 virtual ~ThreadLocalValueHolderBase() {} 1952}; 1953 1954// Called by pthread to delete thread-local data stored by 1955// pthread_setspecific(). 1956extern "C" inline void DeleteThreadLocalValue(void* value_holder) { 1957 delete static_cast<ThreadLocalValueHolderBase*>(value_holder); 1958} 1959 1960// Implements thread-local storage on pthreads-based systems. 1961template <typename T> 1962class ThreadLocal { 1963 public: 1964 ThreadLocal() : key_(CreateKey()), 1965 default_() {} 1966 explicit ThreadLocal(const T& value) : key_(CreateKey()), 1967 default_(value) {} 1968 1969 ~ThreadLocal() { 1970 // Destroys the managed object for the current thread, if any. 1971 DeleteThreadLocalValue(pthread_getspecific(key_)); 1972 1973 // Releases resources associated with the key. This will *not* 1974 // delete managed objects for other threads. 1975 GTEST_CHECK_POSIX_SUCCESS_(pthread_key_delete(key_)); 1976 } 1977 1978 T* pointer() { return GetOrCreateValue(); } 1979 const T* pointer() const { return GetOrCreateValue(); } 1980 const T& get() const { return *pointer(); } 1981 void set(const T& value) { *pointer() = value; } 1982 1983 private: 1984 // Holds a value of type T. 1985 class ValueHolder : public ThreadLocalValueHolderBase { 1986 public: 1987 explicit ValueHolder(const T& value) : value_(value) {} 1988 1989 T* pointer() { return &value_; } 1990 1991 private: 1992 T value_; 1993 GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder); 1994 }; 1995 1996 static pthread_key_t CreateKey() { 1997 pthread_key_t key; 1998 // When a thread exits, DeleteThreadLocalValue() will be called on 1999 // the object managed for that thread. 2000 GTEST_CHECK_POSIX_SUCCESS_( 2001 pthread_key_create(&key, &DeleteThreadLocalValue)); 2002 return key; 2003 } 2004 2005 T* GetOrCreateValue() const { 2006 ThreadLocalValueHolderBase* const holder = 2007 static_cast<ThreadLocalValueHolderBase*>(pthread_getspecific(key_)); 2008 if (holder != NULL) { 2009 return CheckedDowncastToActualType<ValueHolder>(holder)->pointer(); 2010 } 2011 2012 ValueHolder* const new_holder = new ValueHolder(default_); 2013 ThreadLocalValueHolderBase* const holder_base = new_holder; 2014 GTEST_CHECK_POSIX_SUCCESS_(pthread_setspecific(key_, holder_base)); 2015 return new_holder->pointer(); 2016 } 2017 2018 // A key pthreads uses for looking up per-thread values. 2019 const pthread_key_t key_; 2020 const T default_; // The default value for each thread. 2021 2022 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal); 2023}; 2024 2025# endif // OS detection 2026 2027#else // GTEST_IS_THREADSAFE 2028 2029// A dummy implementation of synchronization primitives (mutex, lock, 2030// and thread-local variable). Necessary for compiling Google Test where 2031// mutex is not supported - using Google Test in multiple threads is not 2032// supported on such platforms. 2033 2034class Mutex { 2035 public: 2036 Mutex() {} 2037 void Lock() {} 2038 void Unlock() {} 2039 void AssertHeld() const {} 2040}; 2041 2042# define GTEST_DECLARE_STATIC_MUTEX_(mutex) \ 2043 extern ::testing::internal::Mutex mutex 2044 2045# define GTEST_DEFINE_STATIC_MUTEX_(mutex) ::testing::internal::Mutex mutex 2046 2047// We cannot name this class MutexLock because the ctor declaration would 2048// conflict with a macro named MutexLock, which is defined on some 2049// platforms. That macro is used as a defensive measure to prevent against 2050// inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than 2051// "MutexLock l(&mu)". Hence the typedef trick below. 2052class GTestMutexLock { 2053 public: 2054 explicit GTestMutexLock(Mutex*) {} // NOLINT 2055}; 2056 2057typedef GTestMutexLock MutexLock; 2058 2059template <typename T> 2060class ThreadLocal { 2061 public: 2062 ThreadLocal() : value_() {} 2063 explicit ThreadLocal(const T& value) : value_(value) {} 2064 T* pointer() { return &value_; } 2065 const T* pointer() const { return &value_; } 2066 const T& get() const { return value_; } 2067 void set(const T& value) { value_ = value; } 2068 private: 2069 T value_; 2070}; 2071 2072#endif // GTEST_IS_THREADSAFE 2073 2074// Returns the number of threads running in the process, or 0 to indicate that 2075// we cannot detect it. 2076GTEST_API_ size_t GetThreadCount(); 2077 2078// Passing non-POD classes through ellipsis (...) crashes the ARM 2079// compiler and generates a warning in Sun Studio. The Nokia Symbian 2080// and the IBM XL C/C++ compiler try to instantiate a copy constructor 2081// for objects passed through ellipsis (...), failing for uncopyable 2082// objects. We define this to ensure that only POD is passed through 2083// ellipsis on these systems. 2084#if defined(__SYMBIAN32__) || defined(__IBMCPP__) || defined(__SUNPRO_CC) 2085// We lose support for NULL detection where the compiler doesn't like 2086// passing non-POD classes through ellipsis (...). 2087# define GTEST_ELLIPSIS_NEEDS_POD_ 1 2088#else 2089# define GTEST_CAN_COMPARE_NULL 1 2090#endif 2091 2092// The Nokia Symbian and IBM XL C/C++ compilers cannot decide between 2093// const T& and const T* in a function template. These compilers 2094// _can_ decide between class template specializations for T and T*, 2095// so a tr1::type_traits-like is_pointer works. 2096#if defined(__SYMBIAN32__) || defined(__IBMCPP__) 2097# define GTEST_NEEDS_IS_POINTER_ 1 2098#endif 2099 2100template <bool bool_value> 2101struct bool_constant { 2102 typedef bool_constant<bool_value> type; 2103 static const bool value = bool_value; 2104}; 2105template <bool bool_value> const bool bool_constant<bool_value>::value; 2106 2107typedef bool_constant<false> false_type; 2108typedef bool_constant<true> true_type; 2109 2110template <typename T> 2111struct is_pointer : public false_type {}; 2112 2113template <typename T> 2114struct is_pointer<T*> : public true_type {}; 2115 2116template <typename Iterator> 2117struct IteratorTraits { 2118 typedef typename Iterator::value_type value_type; 2119}; 2120 2121template <typename T> 2122struct IteratorTraits<T*> { 2123 typedef T value_type; 2124}; 2125 2126template <typename T> 2127struct IteratorTraits<const T*> { 2128 typedef T value_type; 2129}; 2130 2131#if GTEST_OS_WINDOWS 2132# define GTEST_PATH_SEP_ "\\" 2133# define GTEST_HAS_ALT_PATH_SEP_ 1 2134// The biggest signed integer type the compiler supports. 2135typedef __int64 BiggestInt; 2136#else 2137# define GTEST_PATH_SEP_ "/" 2138# define GTEST_HAS_ALT_PATH_SEP_ 0 2139typedef long long BiggestInt; // NOLINT 2140#endif // GTEST_OS_WINDOWS 2141 2142// Utilities for char. 2143 2144// isspace(int ch) and friends accept an unsigned char or EOF. char 2145// may be signed, depending on the compiler (or compiler flags). 2146// Therefore we need to cast a char to unsigned char before calling 2147// isspace(), etc. 2148 2149inline bool IsAlpha(char ch) { 2150 return isalpha(static_cast<unsigned char>(ch)) != 0; 2151} 2152inline bool IsAlNum(char ch) { 2153 return isalnum(static_cast<unsigned char>(ch)) != 0; 2154} 2155inline bool IsDigit(char ch) { 2156 return isdigit(static_cast<unsigned char>(ch)) != 0; 2157} 2158inline bool IsLower(char ch) { 2159 return islower(static_cast<unsigned char>(ch)) != 0; 2160} 2161inline bool IsSpace(char ch) { 2162 return isspace(static_cast<unsigned char>(ch)) != 0; 2163} 2164inline bool IsUpper(char ch) { 2165 return isupper(static_cast<unsigned char>(ch)) != 0; 2166} 2167inline bool IsXDigit(char ch) { 2168 return isxdigit(static_cast<unsigned char>(ch)) != 0; 2169} 2170inline bool IsXDigit(wchar_t ch) { 2171 const unsigned char low_byte = static_cast<unsigned char>(ch); 2172 return ch == low_byte && isxdigit(low_byte) != 0; 2173} 2174 2175inline char ToLower(char ch) { 2176 return static_cast<char>(tolower(static_cast<unsigned char>(ch))); 2177} 2178inline char ToUpper(char ch) { 2179 return static_cast<char>(toupper(static_cast<unsigned char>(ch))); 2180} 2181 2182// The testing::internal::posix namespace holds wrappers for common 2183// POSIX functions. These wrappers hide the differences between 2184// Windows/MSVC and POSIX systems. Since some compilers define these 2185// standard functions as macros, the wrapper cannot have the same name 2186// as the wrapped function. 2187 2188namespace posix { 2189 2190// Functions with a different name on Windows. 2191 2192#if GTEST_OS_WINDOWS 2193 2194typedef struct _stat StatStruct; 2195 2196# ifdef __BORLANDC__ 2197inline int IsATTY(int fd) { return isatty(fd); } 2198inline int StrCaseCmp(const char* s1, const char* s2) { 2199 return stricmp(s1, s2); 2200} 2201inline char* StrDup(const char* src) { return strdup(src); } 2202# else // !__BORLANDC__ 2203# if GTEST_OS_WINDOWS_MOBILE 2204inline int IsATTY(int /* fd */) { return 0; } 2205# else 2206inline int IsATTY(int fd) { return _isatty(fd); } 2207# endif // GTEST_OS_WINDOWS_MOBILE 2208inline int StrCaseCmp(const char* s1, const char* s2) { 2209 return _stricmp(s1, s2); 2210} 2211inline char* StrDup(const char* src) { return _strdup(src); } 2212# endif // __BORLANDC__ 2213 2214# if GTEST_OS_WINDOWS_MOBILE 2215inline int FileNo(FILE* file) { return reinterpret_cast<int>(_fileno(file)); } 2216// Stat(), RmDir(), and IsDir() are not needed on Windows CE at this 2217// time and thus not defined there. 2218# else 2219inline int FileNo(FILE* file) { return _fileno(file); } 2220inline int Stat(const char* path, StatStruct* buf) { return _stat(path, buf); } 2221inline int RmDir(const char* dir) { return _rmdir(dir); } 2222inline bool IsDir(const StatStruct& st) { 2223 return (_S_IFDIR & st.st_mode) != 0; 2224} 2225# endif // GTEST_OS_WINDOWS_MOBILE 2226 2227#else 2228 2229typedef struct stat StatStruct; 2230 2231inline int FileNo(FILE* file) { return fileno(file); } 2232inline int IsATTY(int fd) { return isatty(fd); } 2233inline int Stat(const char* path, StatStruct* buf) { return stat(path, buf); } 2234inline int StrCaseCmp(const char* s1, const char* s2) { 2235 return strcasecmp(s1, s2); 2236} 2237inline char* StrDup(const char* src) { return strdup(src); } 2238inline int RmDir(const char* dir) { return rmdir(dir); } 2239inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); } 2240 2241#endif // GTEST_OS_WINDOWS 2242 2243// Functions deprecated by MSVC 8.0. 2244 2245GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996 /* deprecated function */) 2246 2247inline const char* StrNCpy(char* dest, const char* src, size_t n) { 2248 return strncpy(dest, src, n); 2249} 2250 2251// ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and 2252// StrError() aren't needed on Windows CE at this time and thus not 2253// defined there. 2254 2255#if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT 2256inline int ChDir(const char* dir) { return chdir(dir); } 2257#endif 2258inline FILE* FOpen(const char* path, const char* mode) { 2259 return fopen(path, mode); 2260} 2261#if !GTEST_OS_WINDOWS_MOBILE 2262inline FILE *FReopen(const char* path, const char* mode, FILE* stream) { 2263 return freopen(path, mode, stream); 2264} 2265inline FILE* FDOpen(int fd, const char* mode) { return fdopen(fd, mode); } 2266#endif 2267inline int FClose(FILE* fp) { return fclose(fp); } 2268#if !GTEST_OS_WINDOWS_MOBILE 2269inline int Read(int fd, void* buf, unsigned int count) { 2270 return static_cast<int>(read(fd, buf, count)); 2271} 2272inline int Write(int fd, const void* buf, unsigned int count) { 2273 return static_cast<int>(write(fd, buf, count)); 2274} 2275inline int Close(int fd) { return close(fd); } 2276inline const char* StrError(int errnum) { return strerror(errnum); } 2277#endif 2278inline const char* GetEnv(const char* name) { 2279#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE | GTEST_OS_WINDOWS_RT 2280 // We are on Windows CE, which has no environment variables. 2281 return NULL; 2282#elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9) 2283 // Environment variables which we programmatically clear will be set to the 2284 // empty string rather than unset (NULL). Handle that case. 2285 const char* const env = getenv(name); 2286 return (env != NULL && env[0] != '\0') ? env : NULL; 2287#else 2288 return getenv(name); 2289#endif 2290} 2291 2292GTEST_DISABLE_MSC_WARNINGS_POP_() 2293 2294#if GTEST_OS_WINDOWS_MOBILE 2295// Windows CE has no C library. The abort() function is used in 2296// several places in Google Test. This implementation provides a reasonable 2297// imitation of standard behaviour. 2298void Abort(); 2299#else 2300inline void Abort() { abort(); } 2301#endif // GTEST_OS_WINDOWS_MOBILE 2302 2303} // namespace posix 2304 2305// MSVC "deprecates" snprintf and issues warnings wherever it is used. In 2306// order to avoid these warnings, we need to use _snprintf or _snprintf_s on 2307// MSVC-based platforms. We map the GTEST_SNPRINTF_ macro to the appropriate 2308// function in order to achieve that. We use macro definition here because 2309// snprintf is a variadic function. 2310#if _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE 2311// MSVC 2005 and above support variadic macros. 2312# define GTEST_SNPRINTF_(buffer, size, format, ...) \ 2313 _snprintf_s(buffer, size, size, format, __VA_ARGS__) 2314#elif defined(_MSC_VER) 2315// Windows CE does not define _snprintf_s and MSVC prior to 2005 doesn't 2316// complain about _snprintf. 2317# define GTEST_SNPRINTF_ _snprintf 2318#else 2319# define GTEST_SNPRINTF_ snprintf 2320#endif 2321 2322// The maximum number a BiggestInt can represent. This definition 2323// works no matter BiggestInt is represented in one's complement or 2324// two's complement. 2325// 2326// We cannot rely on numeric_limits in STL, as __int64 and long long 2327// are not part of standard C++ and numeric_limits doesn't need to be 2328// defined for them. 2329const BiggestInt kMaxBiggestInt = 2330 ~(static_cast<BiggestInt>(1) << (8*sizeof(BiggestInt) - 1)); 2331 2332// This template class serves as a compile-time function from size to 2333// type. It maps a size in bytes to a primitive type with that 2334// size. e.g. 2335// 2336// TypeWithSize<4>::UInt 2337// 2338// is typedef-ed to be unsigned int (unsigned integer made up of 4 2339// bytes). 2340// 2341// Such functionality should belong to STL, but I cannot find it 2342// there. 2343// 2344// Google Test uses this class in the implementation of floating-point 2345// comparison. 2346// 2347// For now it only handles UInt (unsigned int) as that's all Google Test 2348// needs. Other types can be easily added in the future if need 2349// arises. 2350template <size_t size> 2351class TypeWithSize { 2352 public: 2353 // This prevents the user from using TypeWithSize<N> with incorrect 2354 // values of N. 2355 typedef void UInt; 2356}; 2357 2358// The specialization for size 4. 2359template <> 2360class TypeWithSize<4> { 2361 public: 2362 // unsigned int has size 4 in both gcc and MSVC. 2363 // 2364 // As base/basictypes.h doesn't compile on Windows, we cannot use 2365 // uint32, uint64, and etc here. 2366 typedef int Int; 2367 typedef unsigned int UInt; 2368}; 2369 2370// The specialization for size 8. 2371template <> 2372class TypeWithSize<8> { 2373 public: 2374#if GTEST_OS_WINDOWS 2375 typedef __int64 Int; 2376 typedef unsigned __int64 UInt; 2377#else 2378 typedef long long Int; // NOLINT 2379 typedef unsigned long long UInt; // NOLINT 2380#endif // GTEST_OS_WINDOWS 2381}; 2382 2383// Integer types of known sizes. 2384typedef TypeWithSize<4>::Int Int32; 2385typedef TypeWithSize<4>::UInt UInt32; 2386typedef TypeWithSize<8>::Int Int64; 2387typedef TypeWithSize<8>::UInt UInt64; 2388typedef TypeWithSize<8>::Int TimeInMillis; // Represents time in milliseconds. 2389 2390// Utilities for command line flags and environment variables. 2391 2392// Macro for referencing flags. 2393#define GTEST_FLAG(name) FLAGS_gtest_##name 2394 2395// Macros for declaring flags. 2396#define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name) 2397#define GTEST_DECLARE_int32_(name) \ 2398 GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name) 2399#define GTEST_DECLARE_string_(name) \ 2400 GTEST_API_ extern ::std::string GTEST_FLAG(name) 2401 2402// Macros for defining flags. 2403#define GTEST_DEFINE_bool_(name, default_val, doc) \ 2404 GTEST_API_ bool GTEST_FLAG(name) = (default_val) 2405#define GTEST_DEFINE_int32_(name, default_val, doc) \ 2406 GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val) 2407#define GTEST_DEFINE_string_(name, default_val, doc) \ 2408 GTEST_API_ ::std::string GTEST_FLAG(name) = (default_val) 2409 2410// Thread annotations 2411#define GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks) 2412#define GTEST_LOCK_EXCLUDED_(locks) 2413 2414// Parses 'str' for a 32-bit signed integer. If successful, writes the result 2415// to *value and returns true; otherwise leaves *value unchanged and returns 2416// false. 2417// TODO(chandlerc): Find a better way to refactor flag and environment parsing 2418// out of both gtest-port.cc and gtest.cc to avoid exporting this utility 2419// function. 2420bool ParseInt32(const Message& src_text, const char* str, Int32* value); 2421 2422// Parses a bool/Int32/string from the environment variable 2423// corresponding to the given Google Test flag. 2424bool BoolFromGTestEnv(const char* flag, bool default_val); 2425GTEST_API_ Int32 Int32FromGTestEnv(const char* flag, Int32 default_val); 2426const char* StringFromGTestEnv(const char* flag, const char* default_val); 2427 2428} // namespace internal 2429} // namespace testing 2430 2431#endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_ 2432 2433