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