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 (at) 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_FREEBSD - FreeBSD 125 // GTEST_OS_HPUX - HP-UX 126 // GTEST_OS_LINUX - Linux 127 // GTEST_OS_LINUX_ANDROID - Google Android 128 // GTEST_OS_MAC - Mac OS X 129 // GTEST_OS_IOS - iOS 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 (at) 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 // testing::internal::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 #include <vector> // NOLINT 280 281 #include "gtest/internal/gtest-port-arch.h" 282 #include "gtest/internal/custom/gtest-port.h" 283 284 #if !defined(GTEST_DEV_EMAIL_) 285 # define GTEST_DEV_EMAIL_ "googletestframework@@googlegroups.com" 286 # define GTEST_FLAG_PREFIX_ "gtest_" 287 # define GTEST_FLAG_PREFIX_DASH_ "gtest-" 288 # define GTEST_FLAG_PREFIX_UPPER_ "GTEST_" 289 # define GTEST_NAME_ "Google Test" 290 # define GTEST_PROJECT_URL_ "https://github.com/google/googletest/" 291 #endif // !defined(GTEST_DEV_EMAIL_) 292 293 #if !defined(GTEST_INIT_GOOGLE_TEST_NAME_) 294 # define GTEST_INIT_GOOGLE_TEST_NAME_ "testing::InitGoogleTest" 295 #endif // !defined(GTEST_INIT_GOOGLE_TEST_NAME_) 296 297 // Determines the version of gcc that is used to compile this. 298 #ifdef __GNUC__ 299 // 40302 means version 4.3.2. 300 # define GTEST_GCC_VER_ \ 301 (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__) 302 #endif // __GNUC__ 303 304 // Macros for disabling Microsoft Visual C++ warnings. 305 // 306 // GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800 4385) 307 // /* code that triggers warnings C4800 and C4385 */ 308 // GTEST_DISABLE_MSC_WARNINGS_POP_() 309 #if _MSC_VER >= 1500 310 # define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings) \ 311 __pragma(warning(push)) \ 312 __pragma(warning(disable: warnings)) 313 # define GTEST_DISABLE_MSC_WARNINGS_POP_() \ 314 __pragma(warning(pop)) 315 #else 316 // Older versions of MSVC don't have __pragma. 317 # define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings) 318 # define GTEST_DISABLE_MSC_WARNINGS_POP_() 319 #endif 320 321 #ifndef GTEST_LANG_CXX11 322 // gcc and clang define __GXX_EXPERIMENTAL_CXX0X__ when 323 // -std={c,gnu}++{0x,11} is passed. The C++11 standard specifies a 324 // value for __cplusplus, and recent versions of clang, gcc, and 325 // probably other compilers set that too in C++11 mode. 326 # if __GXX_EXPERIMENTAL_CXX0X__ || __cplusplus >= 201103L 327 // Compiling in at least C++11 mode. 328 # define GTEST_LANG_CXX11 1 329 # else 330 # define GTEST_LANG_CXX11 0 331 # endif 332 #endif 333 334 // Distinct from C++11 language support, some environments don't provide 335 // proper C++11 library support. Notably, it's possible to build in 336 // C++11 mode when targeting Mac OS X 10.6, which has an old libstdc++ 337 // with no C++11 support. 338 // 339 // libstdc++ has sufficient C++11 support as of GCC 4.6.0, __GLIBCXX__ 340 // 20110325, but maintenance releases in the 4.4 and 4.5 series followed 341 // this date, so check for those versions by their date stamps. 342 // https://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html#abi.versioning 343 #if GTEST_LANG_CXX11 && \ 344 (!defined(__GLIBCXX__) || ( \ 345 __GLIBCXX__ >= 20110325ul && /* GCC >= 4.6.0 */ \ 346 /* Blacklist of patch releases of older branches: */ \ 347 __GLIBCXX__ != 20110416ul && /* GCC 4.4.6 */ \ 348 __GLIBCXX__ != 20120313ul && /* GCC 4.4.7 */ \ 349 __GLIBCXX__ != 20110428ul && /* GCC 4.5.3 */ \ 350 __GLIBCXX__ != 20120702ul)) /* GCC 4.5.4 */ 351 # define GTEST_STDLIB_CXX11 1 352 #endif 353 354 // Only use C++11 library features if the library provides them. 355 #if GTEST_STDLIB_CXX11 356 # define GTEST_HAS_STD_BEGIN_AND_END_ 1 357 # define GTEST_HAS_STD_FORWARD_LIST_ 1 358 # define GTEST_HAS_STD_FUNCTION_ 1 359 # define GTEST_HAS_STD_INITIALIZER_LIST_ 1 360 # define GTEST_HAS_STD_MOVE_ 1 361 # define GTEST_HAS_STD_SHARED_PTR_ 1 362 # define GTEST_HAS_STD_TYPE_TRAITS_ 1 363 # define GTEST_HAS_STD_UNIQUE_PTR_ 1 364 #endif 365 366 // C++11 specifies that <tuple> provides std::tuple. 367 // Some platforms still might not have it, however. 368 #if GTEST_LANG_CXX11 369 # define GTEST_HAS_STD_TUPLE_ 1 370 # if defined(__clang__) 371 // Inspired by http://clang.llvm.org/docs/LanguageExtensions.html#__has_include 372 # if defined(__has_include) && !__has_include(<tuple>) 373 # undef GTEST_HAS_STD_TUPLE_ 374 # endif 375 # elif defined(_MSC_VER) 376 // Inspired by boost/config/stdlib/dinkumware.hpp 377 # if defined(_CPPLIB_VER) && _CPPLIB_VER < 520 378 # undef GTEST_HAS_STD_TUPLE_ 379 # endif 380 # elif defined(__GLIBCXX__) 381 // Inspired by boost/config/stdlib/libstdcpp3.hpp, 382 // http://gcc.gnu.org/gcc-4.2/changes.html and 383 // http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt01ch01.html#manual.intro.status.standard.200x 384 # if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2) 385 # undef GTEST_HAS_STD_TUPLE_ 386 # endif 387 # endif 388 #endif 389 390 // Brings in definitions for functions used in the testing::internal::posix 391 // namespace (read, write, close, chdir, isatty, stat). We do not currently 392 // use them on Windows Mobile. 393 #if GTEST_OS_WINDOWS 394 # if !GTEST_OS_WINDOWS_MOBILE 395 # include <direct.h> 396 # include <io.h> 397 # endif 398 // In order to avoid having to include <windows.h>, use forward declaration 399 // assuming CRITICAL_SECTION is a typedef of _RTL_CRITICAL_SECTION. 400 // This assumption is verified by 401 // WindowsTypesTest.CRITICAL_SECTIONIs_RTL_CRITICAL_SECTION. 402 struct _RTL_CRITICAL_SECTION; 403 #else 404 // This assumes that non-Windows OSes provide unistd.h. For OSes where this 405 // is not the case, we need to include headers that provide the functions 406 // mentioned above. 407 # include <unistd.h> 408 # include <strings.h> 409 #endif // GTEST_OS_WINDOWS 410 411 #if GTEST_OS_LINUX_ANDROID 412 // Used to define __ANDROID_API__ matching the target NDK API level. 413 # include <android/api-level.h> // NOLINT 414 #endif 415 416 // Defines this to true iff Google Test can use POSIX regular expressions. 417 #ifndef GTEST_HAS_POSIX_RE 418 # if GTEST_OS_LINUX_ANDROID 419 // On Android, <regex.h> is only available starting with Gingerbread. 420 # define GTEST_HAS_POSIX_RE (__ANDROID_API__ >= 9) 421 # else 422 # define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS) 423 # endif 424 #endif 425 426 #if GTEST_USES_PCRE 427 // The appropriate headers have already been included. 428 429 #elif GTEST_HAS_POSIX_RE 430 431 // On some platforms, <regex.h> needs someone to define size_t, and 432 // won't compile otherwise. We can #include it here as we already 433 // included <stdlib.h>, which is guaranteed to define size_t through 434 // <stddef.h>. 435 # include <regex.h> // NOLINT 436 437 # define GTEST_USES_POSIX_RE 1 438 439 #elif GTEST_OS_WINDOWS 440 441 // <regex.h> is not available on Windows. Use our own simple regex 442 // implementation instead. 443 # define GTEST_USES_SIMPLE_RE 1 444 445 #else 446 447 // <regex.h> may not be available on this platform. Use our own 448 // simple regex implementation instead. 449 # define GTEST_USES_SIMPLE_RE 1 450 451 #endif // GTEST_USES_PCRE 452 453 #ifndef GTEST_HAS_EXCEPTIONS 454 // The user didn't tell us whether exceptions are enabled, so we need 455 // to figure it out. 456 # if defined(_MSC_VER) || defined(__BORLANDC__) 457 // MSVC's and C++Builder's implementations of the STL use the _HAS_EXCEPTIONS 458 // macro to enable exceptions, so we'll do the same. 459 // Assumes that exceptions are enabled by default. 460 # ifndef _HAS_EXCEPTIONS 461 # define _HAS_EXCEPTIONS 1 462 # endif // _HAS_EXCEPTIONS 463 # define GTEST_HAS_EXCEPTIONS _HAS_EXCEPTIONS 464 # elif defined(__clang__) 465 // clang defines __EXCEPTIONS iff exceptions are enabled before clang 220714, 466 // but iff cleanups are enabled after that. In Obj-C++ files, there can be 467 // cleanups for ObjC exceptions which also need cleanups, even if C++ exceptions 468 // are disabled. clang has __has_feature(cxx_exceptions) which checks for C++ 469 // exceptions starting at clang r206352, but which checked for cleanups prior to 470 // that. To reliably check for C++ exception availability with clang, check for 471 // __EXCEPTIONS && __has_feature(cxx_exceptions). 472 # define GTEST_HAS_EXCEPTIONS (__EXCEPTIONS && __has_feature(cxx_exceptions)) 473 # elif defined(__GNUC__) && __EXCEPTIONS 474 // gcc defines __EXCEPTIONS to 1 iff exceptions are enabled. 475 # define GTEST_HAS_EXCEPTIONS 1 476 # elif defined(__SUNPRO_CC) 477 // Sun Pro CC supports exceptions. However, there is no compile-time way of 478 // detecting whether they are enabled or not. Therefore, we assume that 479 // they are enabled unless the user tells us otherwise. 480 # define GTEST_HAS_EXCEPTIONS 1 481 # elif defined(__IBMCPP__) && __EXCEPTIONS 482 // xlC defines __EXCEPTIONS to 1 iff exceptions are enabled. 483 # define GTEST_HAS_EXCEPTIONS 1 484 # elif defined(__HP_aCC) 485 // Exception handling is in effect by default in HP aCC compiler. It has to 486 // be turned of by +noeh compiler option if desired. 487 # define GTEST_HAS_EXCEPTIONS 1 488 # else 489 // For other compilers, we assume exceptions are disabled to be 490 // conservative. 491 # define GTEST_HAS_EXCEPTIONS 0 492 # endif // defined(_MSC_VER) || defined(__BORLANDC__) 493 #endif // GTEST_HAS_EXCEPTIONS 494 495 #if !defined(GTEST_HAS_STD_STRING) 496 // Even though we don't use this macro any longer, we keep it in case 497 // some clients still depend on it. 498 # define GTEST_HAS_STD_STRING 1 499 #elif !GTEST_HAS_STD_STRING 500 // The user told us that ::std::string isn't available. 501 # error "Google Test cannot be used where ::std::string isn't available." 502 #endif // !defined(GTEST_HAS_STD_STRING) 503 504 #ifndef GTEST_HAS_GLOBAL_STRING 505 // The user didn't tell us whether ::string is available, so we need 506 // to figure it out. 507 508 # define GTEST_HAS_GLOBAL_STRING 0 509 510 #endif // GTEST_HAS_GLOBAL_STRING 511 512 #ifndef GTEST_HAS_STD_WSTRING 513 // The user didn't tell us whether ::std::wstring is available, so we need 514 // to figure it out. 515 // TODO(wan (at) google.com): uses autoconf to detect whether ::std::wstring 516 // is available. 517 518 // Cygwin 1.7 and below doesn't support ::std::wstring. 519 // Solaris' libc++ doesn't support it either. Android has 520 // no support for it at least as recent as Froyo (2.2). 521 # define GTEST_HAS_STD_WSTRING \ 522 (!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS)) 523 524 #endif // GTEST_HAS_STD_WSTRING 525 526 #ifndef GTEST_HAS_GLOBAL_WSTRING 527 // The user didn't tell us whether ::wstring is available, so we need 528 // to figure it out. 529 # define GTEST_HAS_GLOBAL_WSTRING \ 530 (GTEST_HAS_STD_WSTRING && GTEST_HAS_GLOBAL_STRING) 531 #endif // GTEST_HAS_GLOBAL_WSTRING 532 533 // Determines whether RTTI is available. 534 #ifndef GTEST_HAS_RTTI 535 // The user didn't tell us whether RTTI is enabled, so we need to 536 // figure it out. 537 538 # ifdef _MSC_VER 539 540 # ifdef _CPPRTTI // MSVC defines this macro iff RTTI is enabled. 541 # define GTEST_HAS_RTTI 1 542 # else 543 # define GTEST_HAS_RTTI 0 544 # endif 545 546 // Starting with version 4.3.2, gcc defines __GXX_RTTI iff RTTI is enabled. 547 # elif defined(__GNUC__) && (GTEST_GCC_VER_ >= 40302) 548 549 # ifdef __GXX_RTTI 550 // When building against STLport with the Android NDK and with 551 // -frtti -fno-exceptions, the build fails at link time with undefined 552 // references to __cxa_bad_typeid. Note sure if STL or toolchain bug, 553 // so disable RTTI when detected. 554 # if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR) && \ 555 !defined(__EXCEPTIONS) 556 # define GTEST_HAS_RTTI 0 557 # else 558 # define GTEST_HAS_RTTI 1 559 # endif // GTEST_OS_LINUX_ANDROID && __STLPORT_MAJOR && !__EXCEPTIONS 560 # else 561 # define GTEST_HAS_RTTI 0 562 # endif // __GXX_RTTI 563 564 // Clang defines __GXX_RTTI starting with version 3.0, but its manual recommends 565 // using has_feature instead. has_feature(cxx_rtti) is supported since 2.7, the 566 // first version with C++ support. 567 # elif defined(__clang__) 568 569 # define GTEST_HAS_RTTI __has_feature(cxx_rtti) 570 571 // Starting with version 9.0 IBM Visual Age defines __RTTI_ALL__ to 1 if 572 // both the typeid and dynamic_cast features are present. 573 # elif defined(__IBMCPP__) && (__IBMCPP__ >= 900) 574 575 # ifdef __RTTI_ALL__ 576 # define GTEST_HAS_RTTI 1 577 # else 578 # define GTEST_HAS_RTTI 0 579 # endif 580 581 # else 582 583 // For all other compilers, we assume RTTI is enabled. 584 # define GTEST_HAS_RTTI 1 585 586 # endif // _MSC_VER 587 588 #endif // GTEST_HAS_RTTI 589 590 // It's this header's responsibility to #include <typeinfo> when RTTI 591 // is enabled. 592 #if GTEST_HAS_RTTI 593 # include <typeinfo> 594 #endif 595 596 // Determines whether Google Test can use the pthreads library. 597 #ifndef GTEST_HAS_PTHREAD 598 // The user didn't tell us explicitly, so we make reasonable assumptions about 599 // which platforms have pthreads support. 600 // 601 // To disable threading support in Google Test, add -DGTEST_HAS_PTHREAD=0 602 // to your compiler flags. 603 # define GTEST_HAS_PTHREAD (GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_HPUX \ 604 || GTEST_OS_QNX || GTEST_OS_FREEBSD || GTEST_OS_NACL) 605 #endif // GTEST_HAS_PTHREAD 606 607 #if GTEST_HAS_PTHREAD 608 // gtest-port.h guarantees to #include <pthread.h> when GTEST_HAS_PTHREAD is 609 // true. 610 # include <pthread.h> // NOLINT 611 612 // For timespec and nanosleep, used below. 613 # include <time.h> // NOLINT 614 #endif 615 616 // Determines if hash_map/hash_set are available. 617 // Only used for testing against those containers. 618 #if !defined(GTEST_HAS_HASH_MAP_) 619 # if _MSC_VER 620 # define GTEST_HAS_HASH_MAP_ 1 // Indicates that hash_map is available. 621 # define GTEST_HAS_HASH_SET_ 1 // Indicates that hash_set is available. 622 # endif // _MSC_VER 623 #endif // !defined(GTEST_HAS_HASH_MAP_) 624 625 // Determines whether Google Test can use tr1/tuple. You can define 626 // this macro to 0 to prevent Google Test from using tuple (any 627 // feature depending on tuple with be disabled in this mode). 628 #ifndef GTEST_HAS_TR1_TUPLE 629 # if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR) 630 // STLport, provided with the Android NDK, has neither <tr1/tuple> or <tuple>. 631 # define GTEST_HAS_TR1_TUPLE 0 632 # else 633 // The user didn't tell us not to do it, so we assume it's OK. 634 # define GTEST_HAS_TR1_TUPLE 1 635 # endif 636 #endif // GTEST_HAS_TR1_TUPLE 637 638 // Determines whether Google Test's own tr1 tuple implementation 639 // should be used. 640 #ifndef GTEST_USE_OWN_TR1_TUPLE 641 // The user didn't tell us, so we need to figure it out. 642 643 // We use our own TR1 tuple if we aren't sure the user has an 644 // implementation of it already. At this time, libstdc++ 4.0.0+ and 645 // MSVC 2010 are the only mainstream standard libraries that come 646 // with a TR1 tuple implementation. NVIDIA's CUDA NVCC compiler 647 // pretends to be GCC by defining __GNUC__ and friends, but cannot 648 // compile GCC's tuple implementation. MSVC 2008 (9.0) provides TR1 649 // tuple in a 323 MB Feature Pack download, which we cannot assume the 650 // user has. QNX's QCC compiler is a modified GCC but it doesn't 651 // support TR1 tuple. libc++ only provides std::tuple, in C++11 mode, 652 // and it can be used with some compilers that define __GNUC__. 653 # if (defined(__GNUC__) && !defined(__CUDACC__) && (GTEST_GCC_VER_ >= 40000) \ 654 && !GTEST_OS_QNX && !defined(_LIBCPP_VERSION)) || _MSC_VER >= 1600 655 # define GTEST_ENV_HAS_TR1_TUPLE_ 1 656 # endif 657 658 // C++11 specifies that <tuple> provides std::tuple. Use that if gtest is used 659 // in C++11 mode and libstdc++ isn't very old (binaries targeting OS X 10.6 660 // can build with clang but need to use gcc4.2's libstdc++). 661 # if GTEST_LANG_CXX11 && (!defined(__GLIBCXX__) || __GLIBCXX__ > 20110325) 662 # define GTEST_ENV_HAS_STD_TUPLE_ 1 663 # endif 664 665 # if GTEST_ENV_HAS_TR1_TUPLE_ || GTEST_ENV_HAS_STD_TUPLE_ 666 # define GTEST_USE_OWN_TR1_TUPLE 0 667 # else 668 # define GTEST_USE_OWN_TR1_TUPLE 1 669 # endif 670 671 #endif // GTEST_USE_OWN_TR1_TUPLE 672 673 // To avoid conditional compilation everywhere, we make it 674 // gtest-port.h's responsibility to #include the header implementing 675 // tuple. 676 #if GTEST_HAS_STD_TUPLE_ 677 # include <tuple> // IWYU pragma: export 678 # define GTEST_TUPLE_NAMESPACE_ ::std 679 #endif // GTEST_HAS_STD_TUPLE_ 680 681 // We include tr1::tuple even if std::tuple is available to define printers for 682 // them. 683 #if GTEST_HAS_TR1_TUPLE 684 # ifndef GTEST_TUPLE_NAMESPACE_ 685 # define GTEST_TUPLE_NAMESPACE_ ::std::tr1 686 # endif // GTEST_TUPLE_NAMESPACE_ 687 688 # if GTEST_USE_OWN_TR1_TUPLE 689 # include "gtest/internal/gtest-tuple.h" // IWYU pragma: export // NOLINT 690 # elif GTEST_ENV_HAS_STD_TUPLE_ 691 # include <tuple> 692 // C++11 puts its tuple into the ::std namespace rather than 693 // ::std::tr1. gtest expects tuple to live in ::std::tr1, so put it there. 694 // This causes undefined behavior, but supported compilers react in 695 // the way we intend. 696 namespace std { 697 namespace tr1 { 698 using ::std::get; 699 using ::std::make_tuple; 700 using ::std::tuple; 701 using ::std::tuple_element; 702 using ::std::tuple_size; 703 } 704 } 705 706 # elif GTEST_OS_SYMBIAN 707 708 // On Symbian, BOOST_HAS_TR1_TUPLE causes Boost's TR1 tuple library to 709 // use STLport's tuple implementation, which unfortunately doesn't 710 // work as the copy of STLport distributed with Symbian is incomplete. 711 // By making sure BOOST_HAS_TR1_TUPLE is undefined, we force Boost to 712 // use its own tuple implementation. 713 # ifdef BOOST_HAS_TR1_TUPLE 714 # undef BOOST_HAS_TR1_TUPLE 715 # endif // BOOST_HAS_TR1_TUPLE 716 717 // This prevents <boost/tr1/detail/config.hpp>, which defines 718 // BOOST_HAS_TR1_TUPLE, from being #included by Boost's <tuple>. 719 # define BOOST_TR1_DETAIL_CONFIG_HPP_INCLUDED 720 # include <tuple> // IWYU pragma: export // NOLINT 721 722 # elif defined(__GNUC__) && (GTEST_GCC_VER_ >= 40000) 723 // GCC 4.0+ implements tr1/tuple in the <tr1/tuple> header. This does 724 // not conform to the TR1 spec, which requires the header to be <tuple>. 725 726 # if !GTEST_HAS_RTTI && GTEST_GCC_VER_ < 40302 727 // Until version 4.3.2, gcc has a bug that causes <tr1/functional>, 728 // which is #included by <tr1/tuple>, to not compile when RTTI is 729 // disabled. _TR1_FUNCTIONAL is the header guard for 730 // <tr1/functional>. Hence the following #define is a hack to prevent 731 // <tr1/functional> from being included. 732 # define _TR1_FUNCTIONAL 1 733 # include <tr1/tuple> 734 # undef _TR1_FUNCTIONAL // Allows the user to #include 735 // <tr1/functional> if he chooses to. 736 # else 737 # include <tr1/tuple> // NOLINT 738 # endif // !GTEST_HAS_RTTI && GTEST_GCC_VER_ < 40302 739 740 # else 741 // If the compiler is not GCC 4.0+, we assume the user is using a 742 // spec-conforming TR1 implementation. 743 # include <tuple> // IWYU pragma: export // NOLINT 744 # endif // GTEST_USE_OWN_TR1_TUPLE 745 746 #endif // GTEST_HAS_TR1_TUPLE 747 748 // Determines whether clone(2) is supported. 749 // Usually it will only be available on Linux, excluding 750 // Linux on the Itanium architecture. 751 // Also see http://linux.die.net/man/2/clone. 752 #ifndef GTEST_HAS_CLONE 753 // The user didn't tell us, so we need to figure it out. 754 755 # if GTEST_OS_LINUX && !defined(__ia64__) 756 # if GTEST_OS_LINUX_ANDROID 757 // On Android, clone() is only available on ARM starting with Gingerbread. 758 # if defined(__arm__) && __ANDROID_API__ >= 9 759 # define GTEST_HAS_CLONE 1 760 # else 761 # define GTEST_HAS_CLONE 0 762 # endif 763 # else 764 # define GTEST_HAS_CLONE 1 765 # endif 766 # else 767 # define GTEST_HAS_CLONE 0 768 # endif // GTEST_OS_LINUX && !defined(__ia64__) 769 770 #endif // GTEST_HAS_CLONE 771 772 // Determines whether to support stream redirection. This is used to test 773 // output correctness and to implement death tests. 774 #ifndef GTEST_HAS_STREAM_REDIRECTION 775 // By default, we assume that stream redirection is supported on all 776 // platforms except known mobile ones. 777 # if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_SYMBIAN || \ 778 GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT 779 # define GTEST_HAS_STREAM_REDIRECTION 0 780 # else 781 # define GTEST_HAS_STREAM_REDIRECTION 1 782 # endif // !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_SYMBIAN 783 #endif // GTEST_HAS_STREAM_REDIRECTION 784 785 // Determines whether to support death tests. 786 // Google Test does not support death tests for VC 7.1 and earlier as 787 // abort() in a VC 7.1 application compiled as GUI in debug config 788 // pops up a dialog window that cannot be suppressed programmatically. 789 #if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \ 790 (GTEST_OS_MAC && !GTEST_OS_IOS) || \ 791 (GTEST_OS_WINDOWS_DESKTOP && _MSC_VER >= 1400) || \ 792 GTEST_OS_WINDOWS_MINGW || GTEST_OS_AIX || GTEST_OS_HPUX || \ 793 GTEST_OS_OPENBSD || GTEST_OS_QNX || GTEST_OS_FREEBSD) 794 # define GTEST_HAS_DEATH_TEST 1 795 #endif 796 797 // We don't support MSVC 7.1 with exceptions disabled now. Therefore 798 // all the compilers we care about are adequate for supporting 799 // value-parameterized tests. 800 #define GTEST_HAS_PARAM_TEST 1 801 802 // Determines whether to support type-driven tests. 803 804 // Typed tests need <typeinfo> and variadic macros, which GCC, VC++ 8.0, 805 // Sun Pro CC, IBM Visual Age, and HP aCC support. 806 #if defined(__GNUC__) || (_MSC_VER >= 1400) || defined(__SUNPRO_CC) || \ 807 defined(__IBMCPP__) || defined(__HP_aCC) 808 # define GTEST_HAS_TYPED_TEST 1 809 # define GTEST_HAS_TYPED_TEST_P 1 810 #endif 811 812 // Determines whether to support Combine(). This only makes sense when 813 // value-parameterized tests are enabled. The implementation doesn't 814 // work on Sun Studio since it doesn't understand templated conversion 815 // operators. 816 #if GTEST_HAS_PARAM_TEST && GTEST_HAS_TR1_TUPLE && !defined(__SUNPRO_CC) 817 # define GTEST_HAS_COMBINE 1 818 #endif 819 820 // Determines whether the system compiler uses UTF-16 for encoding wide strings. 821 #define GTEST_WIDE_STRING_USES_UTF16_ \ 822 (GTEST_OS_WINDOWS || GTEST_OS_CYGWIN || GTEST_OS_SYMBIAN || GTEST_OS_AIX) 823 824 // Determines whether test results can be streamed to a socket. 825 #if GTEST_OS_LINUX 826 # define GTEST_CAN_STREAM_RESULTS_ 1 827 #endif 828 829 // Defines some utility macros. 830 831 // The GNU compiler emits a warning if nested "if" statements are followed by 832 // an "else" statement and braces are not used to explicitly disambiguate the 833 // "else" binding. This leads to problems with code like: 834 // 835 // if (gate) 836 // ASSERT_*(condition) << "Some message"; 837 // 838 // The "switch (0) case 0:" idiom is used to suppress this. 839 #ifdef __INTEL_COMPILER 840 # define GTEST_AMBIGUOUS_ELSE_BLOCKER_ 841 #else 842 # define GTEST_AMBIGUOUS_ELSE_BLOCKER_ switch (0) case 0: default: // NOLINT 843 #endif 844 845 // Use this annotation at the end of a struct/class definition to 846 // prevent the compiler from optimizing away instances that are never 847 // used. This is useful when all interesting logic happens inside the 848 // c'tor and / or d'tor. Example: 849 // 850 // struct Foo { 851 // Foo() { ... } 852 // } GTEST_ATTRIBUTE_UNUSED_; 853 // 854 // Also use it after a variable or parameter declaration to tell the 855 // compiler the variable/parameter does not have to be used. 856 #if defined(__GNUC__) && !defined(COMPILER_ICC) 857 # define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused)) 858 #elif defined(__clang__) 859 # if __has_attribute(unused) 860 # define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused)) 861 # endif 862 #endif 863 #ifndef GTEST_ATTRIBUTE_UNUSED_ 864 # define GTEST_ATTRIBUTE_UNUSED_ 865 #endif 866 867 // A macro to disallow operator= 868 // This should be used in the private: declarations for a class. 869 #define GTEST_DISALLOW_ASSIGN_(type)\ 870 void operator=(type const &) 871 872 // A macro to disallow copy constructor and operator= 873 // This should be used in the private: declarations for a class. 874 #define GTEST_DISALLOW_COPY_AND_ASSIGN_(type)\ 875 type(type const &);\ 876 GTEST_DISALLOW_ASSIGN_(type) 877 878 // Tell the compiler to warn about unused return values for functions declared 879 // with this macro. The macro should be used on function declarations 880 // following the argument list: 881 // 882 // Sprocket* AllocateSprocket() GTEST_MUST_USE_RESULT_; 883 #if defined(__GNUC__) && (GTEST_GCC_VER_ >= 30400) && !defined(COMPILER_ICC) 884 # define GTEST_MUST_USE_RESULT_ __attribute__ ((warn_unused_result)) 885 #else 886 # define GTEST_MUST_USE_RESULT_ 887 #endif // __GNUC__ && (GTEST_GCC_VER_ >= 30400) && !COMPILER_ICC 888 889 // MS C++ compiler emits warning when a conditional expression is compile time 890 // constant. In some contexts this warning is false positive and needs to be 891 // suppressed. Use the following two macros in such cases: 892 // 893 // GTEST_INTENTIONAL_CONST_COND_PUSH_() 894 // while (true) { 895 // GTEST_INTENTIONAL_CONST_COND_POP_() 896 // } 897 # define GTEST_INTENTIONAL_CONST_COND_PUSH_() \ 898 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127) 899 # define GTEST_INTENTIONAL_CONST_COND_POP_() \ 900 GTEST_DISABLE_MSC_WARNINGS_POP_() 901 902 // Determine whether the compiler supports Microsoft's Structured Exception 903 // Handling. This is supported by several Windows compilers but generally 904 // does not exist on any other system. 905 #ifndef GTEST_HAS_SEH 906 // The user didn't tell us, so we need to figure it out. 907 908 # if defined(_MSC_VER) || defined(__BORLANDC__) 909 // These two compilers are known to support SEH. 910 # define GTEST_HAS_SEH 1 911 # else 912 // Assume no SEH. 913 # define GTEST_HAS_SEH 0 914 # endif 915 916 #define GTEST_IS_THREADSAFE \ 917 (GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ \ 918 || (GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT) \ 919 || GTEST_HAS_PTHREAD) 920 921 #endif // GTEST_HAS_SEH 922 923 #ifdef _MSC_VER 924 # if GTEST_LINKED_AS_SHARED_LIBRARY 925 # define GTEST_API_ __declspec(dllimport) 926 # elif GTEST_CREATE_SHARED_LIBRARY 927 # define GTEST_API_ __declspec(dllexport) 928 # endif 929 #elif __GNUC__ >= 4 || defined(__clang__) 930 # define GTEST_API_ __attribute__((visibility ("default"))) 931 #endif // _MSC_VER 932 933 #ifndef GTEST_API_ 934 # define GTEST_API_ 935 #endif 936 937 #ifdef __GNUC__ 938 // Ask the compiler to never inline a given function. 939 # define GTEST_NO_INLINE_ __attribute__((noinline)) 940 #else 941 # define GTEST_NO_INLINE_ 942 #endif 943 944 // _LIBCPP_VERSION is defined by the libc++ library from the LLVM project. 945 #if defined(__GLIBCXX__) || defined(_LIBCPP_VERSION) 946 # define GTEST_HAS_CXXABI_H_ 1 947 #else 948 # define GTEST_HAS_CXXABI_H_ 0 949 #endif 950 951 // A function level attribute to disable checking for use of uninitialized 952 // memory when built with MemorySanitizer. 953 #if defined(__clang__) 954 # if __has_feature(memory_sanitizer) 955 # define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ \ 956 __attribute__((no_sanitize_memory)) 957 # else 958 # define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ 959 # endif // __has_feature(memory_sanitizer) 960 #else 961 # define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ 962 #endif // __clang__ 963 964 // A function level attribute to disable AddressSanitizer instrumentation. 965 #if defined(__clang__) 966 # if __has_feature(address_sanitizer) 967 # define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ \ 968 __attribute__((no_sanitize_address)) 969 # else 970 # define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ 971 # endif // __has_feature(address_sanitizer) 972 #else 973 # define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ 974 #endif // __clang__ 975 976 // A function level attribute to disable ThreadSanitizer instrumentation. 977 #if defined(__clang__) 978 # if __has_feature(thread_sanitizer) 979 # define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ \ 980 __attribute__((no_sanitize_thread)) 981 # else 982 # define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ 983 # endif // __has_feature(thread_sanitizer) 984 #else 985 # define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ 986 #endif // __clang__ 987 988 // A function level attribute to disable UndefinedBehaviorSanitizer's (defined) 989 // unsigned integer overflow instrumentation. 990 #if defined(__clang__) 991 # if defined(__has_attribute) && __has_attribute(no_sanitize) 992 # define GTEST_ATTRIBUTE_NO_SANITIZE_UNSIGNED_OVERFLOW_ \ 993 __attribute__((no_sanitize("unsigned-integer-overflow"))) 994 # else 995 # define GTEST_ATTRIBUTE_NO_SANITIZE_UNSIGNED_OVERFLOW_ 996 # endif // defined(__has_attribute) && __has_attribute(no_sanitize) 997 #else 998 # define GTEST_ATTRIBUTE_NO_SANITIZE_UNSIGNED_OVERFLOW_ 999 #endif // __clang__ 1000 1001 namespace testing { 1002 1003 class Message; 1004 1005 #if defined(GTEST_TUPLE_NAMESPACE_) 1006 // Import tuple and friends into the ::testing namespace. 1007 // It is part of our interface, having them in ::testing allows us to change 1008 // their types as needed. 1009 using GTEST_TUPLE_NAMESPACE_::get; 1010 using GTEST_TUPLE_NAMESPACE_::make_tuple; 1011 using GTEST_TUPLE_NAMESPACE_::tuple; 1012 using GTEST_TUPLE_NAMESPACE_::tuple_size; 1013 using GTEST_TUPLE_NAMESPACE_::tuple_element; 1014 #endif // defined(GTEST_TUPLE_NAMESPACE_) 1015 1016 namespace internal { 1017 1018 // A secret type that Google Test users don't know about. It has no 1019 // definition on purpose. Therefore it's impossible to create a 1020 // Secret object, which is what we want. 1021 class Secret; 1022 1023 // The GTEST_COMPILE_ASSERT_ macro can be used to verify that a compile time 1024 // expression is true. For example, you could use it to verify the 1025 // size of a static array: 1026 // 1027 // GTEST_COMPILE_ASSERT_(GTEST_ARRAY_SIZE_(names) == NUM_NAMES, 1028 // names_incorrect_size); 1029 // 1030 // or to make sure a struct is smaller than a certain size: 1031 // 1032 // GTEST_COMPILE_ASSERT_(sizeof(foo) < 128, foo_too_large); 1033 // 1034 // The second argument to the macro is the name of the variable. If 1035 // the expression is false, most compilers will issue a warning/error 1036 // containing the name of the variable. 1037 1038 #if GTEST_LANG_CXX11 1039 # define GTEST_COMPILE_ASSERT_(expr, msg) static_assert(expr, #msg) 1040 #else // !GTEST_LANG_CXX11 1041 template <bool> 1042 struct CompileAssert { 1043 }; 1044 1045 # define GTEST_COMPILE_ASSERT_(expr, msg) \ 1046 typedef ::testing::internal::CompileAssert<(static_cast<bool>(expr))> \ 1047 msg[static_cast<bool>(expr) ? 1 : -1] GTEST_ATTRIBUTE_UNUSED_ 1048 #endif // !GTEST_LANG_CXX11 1049 1050 // Implementation details of GTEST_COMPILE_ASSERT_: 1051 // 1052 // (In C++11, we simply use static_assert instead of the following) 1053 // 1054 // - GTEST_COMPILE_ASSERT_ works by defining an array type that has -1 1055 // elements (and thus is invalid) when the expression is false. 1056 // 1057 // - The simpler definition 1058 // 1059 // #define GTEST_COMPILE_ASSERT_(expr, msg) typedef char msg[(expr) ? 1 : -1] 1060 // 1061 // does not work, as gcc supports variable-length arrays whose sizes 1062 // are determined at run-time (this is gcc's extension and not part 1063 // of the C++ standard). As a result, gcc fails to reject the 1064 // following code with the simple definition: 1065 // 1066 // int foo; 1067 // GTEST_COMPILE_ASSERT_(foo, msg); // not supposed to compile as foo is 1068 // // not a compile-time constant. 1069 // 1070 // - By using the type CompileAssert<(bool(expr))>, we ensures that 1071 // expr is a compile-time constant. (Template arguments must be 1072 // determined at compile-time.) 1073 // 1074 // - The outter parentheses in CompileAssert<(bool(expr))> are necessary 1075 // to work around a bug in gcc 3.4.4 and 4.0.1. If we had written 1076 // 1077 // CompileAssert<bool(expr)> 1078 // 1079 // instead, these compilers will refuse to compile 1080 // 1081 // GTEST_COMPILE_ASSERT_(5 > 0, some_message); 1082 // 1083 // (They seem to think the ">" in "5 > 0" marks the end of the 1084 // template argument list.) 1085 // 1086 // - The array size is (bool(expr) ? 1 : -1), instead of simply 1087 // 1088 // ((expr) ? 1 : -1). 1089 // 1090 // This is to avoid running into a bug in MS VC 7.1, which 1091 // causes ((0.0) ? 1 : -1) to incorrectly evaluate to 1. 1092 1093 // StaticAssertTypeEqHelper is used by StaticAssertTypeEq defined in gtest.h. 1094 // 1095 // This template is declared, but intentionally undefined. 1096 template <typename T1, typename T2> 1097 struct StaticAssertTypeEqHelper; 1098 1099 template <typename T> 1100 struct StaticAssertTypeEqHelper<T, T> { 1101 enum { value = true }; 1102 }; 1103 1104 // Evaluates to the number of elements in 'array'. 1105 #define GTEST_ARRAY_SIZE_(array) (sizeof(array) / sizeof(array[0])) 1106 1107 #if GTEST_HAS_GLOBAL_STRING 1108 typedef ::string string; 1109 #else 1110 typedef ::std::string string; 1111 #endif // GTEST_HAS_GLOBAL_STRING 1112 1113 #if GTEST_HAS_GLOBAL_WSTRING 1114 typedef ::wstring wstring; 1115 #elif GTEST_HAS_STD_WSTRING 1116 typedef ::std::wstring wstring; 1117 #endif // GTEST_HAS_GLOBAL_WSTRING 1118 1119 // A helper for suppressing warnings on constant condition. It just 1120 // returns 'condition'. 1121 GTEST_API_ bool IsTrue(bool condition); 1122 1123 // Defines scoped_ptr. 1124 1125 // This implementation of scoped_ptr is PARTIAL - it only contains 1126 // enough stuff to satisfy Google Test's need. 1127 template <typename T> 1128 class scoped_ptr { 1129 public: 1130 typedef T element_type; 1131 1132 explicit scoped_ptr(T* p = NULL) : ptr_(p) {} 1133 ~scoped_ptr() { reset(); } 1134 1135 T& operator*() const { return *ptr_; } 1136 T* operator->() const { return ptr_; } 1137 T* get() const { return ptr_; } 1138 1139 T* release() { 1140 T* const ptr = ptr_; 1141 ptr_ = NULL; 1142 return ptr; 1143 } 1144 1145 void reset(T* p = NULL) { 1146 if (p != ptr_) { 1147 if (IsTrue(sizeof(T) > 0)) { // Makes sure T is a complete type. 1148 delete ptr_; 1149 } 1150 ptr_ = p; 1151 } 1152 } 1153 1154 friend void swap(scoped_ptr& a, scoped_ptr& b) { 1155 using std::swap; 1156 swap(a.ptr_, b.ptr_); 1157 } 1158 1159 private: 1160 T* ptr_; 1161 1162 GTEST_DISALLOW_COPY_AND_ASSIGN_(scoped_ptr); 1163 }; 1164 1165 // Defines RE. 1166 1167 // A simple C++ wrapper for <regex.h>. It uses the POSIX Extended 1168 // Regular Expression syntax. 1169 class GTEST_API_ RE { 1170 public: 1171 // A copy constructor is required by the Standard to initialize object 1172 // references from r-values. 1173 RE(const RE& other) { Init(other.pattern()); } 1174 1175 // Constructs an RE from a string. 1176 RE(const ::std::string& regex) { Init(regex.c_str()); } // NOLINT 1177 1178 #if GTEST_HAS_GLOBAL_STRING 1179 1180 RE(const ::string& regex) { Init(regex.c_str()); } // NOLINT 1181 1182 #endif // GTEST_HAS_GLOBAL_STRING 1183 1184 RE(const char* regex) { Init(regex); } // NOLINT 1185 ~RE(); 1186 1187 // Returns the string representation of the regex. 1188 const char* pattern() const { return pattern_; } 1189 1190 // FullMatch(str, re) returns true iff regular expression re matches 1191 // the entire str. 1192 // PartialMatch(str, re) returns true iff regular expression re 1193 // matches a substring of str (including str itself). 1194 // 1195 // TODO(wan (at) google.com): make FullMatch() and PartialMatch() work 1196 // when str contains NUL characters. 1197 static bool FullMatch(const ::std::string& str, const RE& re) { 1198 return FullMatch(str.c_str(), re); 1199 } 1200 static bool PartialMatch(const ::std::string& str, const RE& re) { 1201 return PartialMatch(str.c_str(), re); 1202 } 1203 1204 #if GTEST_HAS_GLOBAL_STRING 1205 1206 static bool FullMatch(const ::string& str, const RE& re) { 1207 return FullMatch(str.c_str(), re); 1208 } 1209 static bool PartialMatch(const ::string& str, const RE& re) { 1210 return PartialMatch(str.c_str(), re); 1211 } 1212 1213 #endif // GTEST_HAS_GLOBAL_STRING 1214 1215 static bool FullMatch(const char* str, const RE& re); 1216 static bool PartialMatch(const char* str, const RE& re); 1217 1218 private: 1219 void Init(const char* regex); 1220 1221 // We use a const char* instead of an std::string, as Google Test used to be 1222 // used where std::string is not available. TODO(wan (at) google.com): change to 1223 // std::string. 1224 const char* pattern_; 1225 bool is_valid_; 1226 1227 #if GTEST_USES_POSIX_RE 1228 1229 regex_t full_regex_; // For FullMatch(). 1230 regex_t partial_regex_; // For PartialMatch(). 1231 1232 #else // GTEST_USES_SIMPLE_RE 1233 1234 const char* full_pattern_; // For FullMatch(); 1235 1236 #endif 1237 1238 GTEST_DISALLOW_ASSIGN_(RE); 1239 }; 1240 1241 // Formats a source file path and a line number as they would appear 1242 // in an error message from the compiler used to compile this code. 1243 GTEST_API_ ::std::string FormatFileLocation(const char* file, int line); 1244 1245 // Formats a file location for compiler-independent XML output. 1246 // Although this function is not platform dependent, we put it next to 1247 // FormatFileLocation in order to contrast the two functions. 1248 GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(const char* file, 1249 int line); 1250 1251 // Defines logging utilities: 1252 // GTEST_LOG_(severity) - logs messages at the specified severity level. The 1253 // message itself is streamed into the macro. 1254 // LogToStderr() - directs all log messages to stderr. 1255 // FlushInfoLog() - flushes informational log messages. 1256 1257 enum GTestLogSeverity { 1258 GTEST_INFO, 1259 GTEST_WARNING, 1260 GTEST_ERROR, 1261 GTEST_FATAL 1262 }; 1263 1264 // Formats log entry severity, provides a stream object for streaming the 1265 // log message, and terminates the message with a newline when going out of 1266 // scope. 1267 class GTEST_API_ GTestLog { 1268 public: 1269 GTestLog(GTestLogSeverity severity, const char* file, int line); 1270 1271 // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program. 1272 ~GTestLog(); 1273 1274 ::std::ostream& GetStream() { return ::std::cerr; } 1275 1276 private: 1277 const GTestLogSeverity severity_; 1278 1279 GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestLog); 1280 }; 1281 1282 #if !defined(GTEST_LOG_) 1283 1284 # define GTEST_LOG_(severity) \ 1285 ::testing::internal::GTestLog(::testing::internal::GTEST_##severity, \ 1286 __FILE__, __LINE__).GetStream() 1287 1288 inline void LogToStderr() {} 1289 inline void FlushInfoLog() { fflush(NULL); } 1290 1291 #endif // !defined(GTEST_LOG_) 1292 1293 #if !defined(GTEST_CHECK_) 1294 // INTERNAL IMPLEMENTATION - DO NOT USE. 1295 // 1296 // GTEST_CHECK_ is an all-mode assert. It aborts the program if the condition 1297 // is not satisfied. 1298 // Synopsys: 1299 // GTEST_CHECK_(boolean_condition); 1300 // or 1301 // GTEST_CHECK_(boolean_condition) << "Additional message"; 1302 // 1303 // This checks the condition and if the condition is not satisfied 1304 // it prints message about the condition violation, including the 1305 // condition itself, plus additional message streamed into it, if any, 1306 // and then it aborts the program. It aborts the program irrespective of 1307 // whether it is built in the debug mode or not. 1308 # define GTEST_CHECK_(condition) \ 1309 GTEST_AMBIGUOUS_ELSE_BLOCKER_ \ 1310 if (::testing::internal::IsTrue(condition)) \ 1311 ; \ 1312 else \ 1313 GTEST_LOG_(FATAL) << "Condition " #condition " failed. " 1314 #endif // !defined(GTEST_CHECK_) 1315 1316 // An all-mode assert to verify that the given POSIX-style function 1317 // call returns 0 (indicating success). Known limitation: this 1318 // doesn't expand to a balanced 'if' statement, so enclose the macro 1319 // in {} if you need to use it as the only statement in an 'if' 1320 // branch. 1321 #define GTEST_CHECK_POSIX_SUCCESS_(posix_call) \ 1322 if (const int gtest_error = (posix_call)) \ 1323 GTEST_LOG_(FATAL) << #posix_call << "failed with error " \ 1324 << gtest_error 1325 1326 #if GTEST_HAS_STD_MOVE_ 1327 using std::move; 1328 #else // GTEST_HAS_STD_MOVE_ 1329 template <typename T> 1330 const T& move(const T& t) { 1331 return t; 1332 } 1333 #endif // GTEST_HAS_STD_MOVE_ 1334 1335 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE. 1336 // 1337 // Use ImplicitCast_ as a safe version of static_cast for upcasting in 1338 // the type hierarchy (e.g. casting a Foo* to a SuperclassOfFoo* or a 1339 // const Foo*). When you use ImplicitCast_, the compiler checks that 1340 // the cast is safe. Such explicit ImplicitCast_s are necessary in 1341 // surprisingly many situations where C++ demands an exact type match 1342 // instead of an argument type convertable to a target type. 1343 // 1344 // The syntax for using ImplicitCast_ is the same as for static_cast: 1345 // 1346 // ImplicitCast_<ToType>(expr) 1347 // 1348 // ImplicitCast_ would have been part of the C++ standard library, 1349 // but the proposal was submitted too late. It will probably make 1350 // its way into the language in the future. 1351 // 1352 // This relatively ugly name is intentional. It prevents clashes with 1353 // similar functions users may have (e.g., implicit_cast). The internal 1354 // namespace alone is not enough because the function can be found by ADL. 1355 template<typename To> 1356 inline To ImplicitCast_(To x) { return x; } 1357 1358 // When you upcast (that is, cast a pointer from type Foo to type 1359 // SuperclassOfFoo), it's fine to use ImplicitCast_<>, since upcasts 1360 // always succeed. When you downcast (that is, cast a pointer from 1361 // type Foo to type SubclassOfFoo), static_cast<> isn't safe, because 1362 // how do you know the pointer is really of type SubclassOfFoo? It 1363 // could be a bare Foo, or of type DifferentSubclassOfFoo. Thus, 1364 // when you downcast, you should use this macro. In debug mode, we 1365 // use dynamic_cast<> to double-check the downcast is legal (we die 1366 // if it's not). In normal mode, we do the efficient static_cast<> 1367 // instead. Thus, it's important to test in debug mode to make sure 1368 // the cast is legal! 1369 // This is the only place in the code we should use dynamic_cast<>. 1370 // In particular, you SHOULDN'T be using dynamic_cast<> in order to 1371 // do RTTI (eg code like this: 1372 // if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo); 1373 // if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo); 1374 // You should design the code some other way not to need this. 1375 // 1376 // This relatively ugly name is intentional. It prevents clashes with 1377 // similar functions users may have (e.g., down_cast). The internal 1378 // namespace alone is not enough because the function can be found by ADL. 1379 template<typename To, typename From> // use like this: DownCast_<T*>(foo); 1380 inline To DownCast_(From* f) { // so we only accept pointers 1381 // Ensures that To is a sub-type of From *. This test is here only 1382 // for compile-time type checking, and has no overhead in an 1383 // optimized build at run-time, as it will be optimized away 1384 // completely. 1385 GTEST_INTENTIONAL_CONST_COND_PUSH_() 1386 if (false) { 1387 GTEST_INTENTIONAL_CONST_COND_POP_() 1388 const To to = NULL; 1389 ::testing::internal::ImplicitCast_<From*>(to); 1390 } 1391 1392 #if GTEST_HAS_RTTI 1393 // RTTI: debug mode only! 1394 GTEST_CHECK_(f == NULL || dynamic_cast<To>(f) != NULL); 1395 #endif 1396 return static_cast<To>(f); 1397 } 1398 1399 // Downcasts the pointer of type Base to Derived. 1400 // Derived must be a subclass of Base. The parameter MUST 1401 // point to a class of type Derived, not any subclass of it. 1402 // When RTTI is available, the function performs a runtime 1403 // check to enforce this. 1404 template <class Derived, class Base> 1405 Derived* CheckedDowncastToActualType(Base* base) { 1406 #if GTEST_HAS_RTTI 1407 GTEST_CHECK_(typeid(*base) == typeid(Derived)); 1408 #endif 1409 1410 #if GTEST_HAS_DOWNCAST_ 1411 return ::down_cast<Derived*>(base); 1412 #elif GTEST_HAS_RTTI 1413 return dynamic_cast<Derived*>(base); // NOLINT 1414 #else 1415 return static_cast<Derived*>(base); // Poor man's downcast. 1416 #endif 1417 } 1418 1419 #if GTEST_HAS_STREAM_REDIRECTION 1420 1421 // Defines the stderr capturer: 1422 // CaptureStdout - starts capturing stdout. 1423 // GetCapturedStdout - stops capturing stdout and returns the captured string. 1424 // CaptureStderr - starts capturing stderr. 1425 // GetCapturedStderr - stops capturing stderr and returns the captured string. 1426 // 1427 GTEST_API_ void CaptureStdout(); 1428 GTEST_API_ std::string GetCapturedStdout(); 1429 GTEST_API_ void CaptureStderr(); 1430 GTEST_API_ std::string GetCapturedStderr(); 1431 1432 #endif // GTEST_HAS_STREAM_REDIRECTION 1433 1434 // Returns a path to temporary directory. 1435 GTEST_API_ std::string TempDir(); 1436 1437 // Returns the size (in bytes) of a file. 1438 GTEST_API_ size_t GetFileSize(FILE* file); 1439 1440 // Reads the entire content of a file as a string. 1441 GTEST_API_ std::string ReadEntireFile(FILE* file); 1442 1443 // All command line arguments. 1444 GTEST_API_ const ::std::vector<testing::internal::string>& GetArgvs(); 1445 1446 #if GTEST_HAS_DEATH_TEST 1447 1448 const ::std::vector<testing::internal::string>& GetInjectableArgvs(); 1449 void SetInjectableArgvs(const ::std::vector<testing::internal::string>* 1450 new_argvs); 1451 1452 1453 #endif // GTEST_HAS_DEATH_TEST 1454 1455 // Defines synchronization primitives. 1456 #if GTEST_IS_THREADSAFE 1457 # if GTEST_HAS_PTHREAD 1458 // Sleeps for (roughly) n milliseconds. This function is only for testing 1459 // Google Test's own constructs. Don't use it in user tests, either 1460 // directly or indirectly. 1461 inline void SleepMilliseconds(int n) { 1462 const timespec time = { 1463 0, // 0 seconds. 1464 n * 1000L * 1000L, // And n ms. 1465 }; 1466 nanosleep(&time, NULL); 1467 } 1468 # endif // GTEST_HAS_PTHREAD 1469 1470 # if GTEST_HAS_NOTIFICATION_ 1471 // Notification has already been imported into the namespace. 1472 // Nothing to do here. 1473 1474 # elif GTEST_HAS_PTHREAD 1475 // Allows a controller thread to pause execution of newly created 1476 // threads until notified. Instances of this class must be created 1477 // and destroyed in the controller thread. 1478 // 1479 // This class is only for testing Google Test's own constructs. Do not 1480 // use it in user tests, either directly or indirectly. 1481 class Notification { 1482 public: 1483 Notification() : notified_(false) { 1484 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL)); 1485 } 1486 ~Notification() { 1487 pthread_mutex_destroy(&mutex_); 1488 } 1489 1490 // Notifies all threads created with this notification to start. Must 1491 // be called from the controller thread. 1492 void Notify() { 1493 pthread_mutex_lock(&mutex_); 1494 notified_ = true; 1495 pthread_mutex_unlock(&mutex_); 1496 } 1497 1498 // Blocks until the controller thread notifies. Must be called from a test 1499 // thread. 1500 void WaitForNotification() { 1501 for (;;) { 1502 pthread_mutex_lock(&mutex_); 1503 const bool notified = notified_; 1504 pthread_mutex_unlock(&mutex_); 1505 if (notified) 1506 break; 1507 SleepMilliseconds(10); 1508 } 1509 } 1510 1511 private: 1512 pthread_mutex_t mutex_; 1513 bool notified_; 1514 1515 GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification); 1516 }; 1517 1518 # elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT 1519 1520 GTEST_API_ void SleepMilliseconds(int n); 1521 1522 // Provides leak-safe Windows kernel handle ownership. 1523 // Used in death tests and in threading support. 1524 class GTEST_API_ AutoHandle { 1525 public: 1526 // Assume that Win32 HANDLE type is equivalent to void*. Doing so allows us to 1527 // avoid including <windows.h> in this header file. Including <windows.h> is 1528 // undesirable because it defines a lot of symbols and macros that tend to 1529 // conflict with client code. This assumption is verified by 1530 // WindowsTypesTest.HANDLEIsVoidStar. 1531 typedef void* Handle; 1532 AutoHandle(); 1533 explicit AutoHandle(Handle handle); 1534 1535 ~AutoHandle(); 1536 1537 Handle Get() const; 1538 void Reset(); 1539 void Reset(Handle handle); 1540 1541 private: 1542 // Returns true iff the handle is a valid handle object that can be closed. 1543 bool IsCloseable() const; 1544 1545 Handle handle_; 1546 1547 GTEST_DISALLOW_COPY_AND_ASSIGN_(AutoHandle); 1548 }; 1549 1550 // Allows a controller thread to pause execution of newly created 1551 // threads until notified. Instances of this class must be created 1552 // and destroyed in the controller thread. 1553 // 1554 // This class is only for testing Google Test's own constructs. Do not 1555 // use it in user tests, either directly or indirectly. 1556 class GTEST_API_ Notification { 1557 public: 1558 Notification(); 1559 void Notify(); 1560 void WaitForNotification(); 1561 1562 private: 1563 AutoHandle event_; 1564 1565 GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification); 1566 }; 1567 # endif // GTEST_HAS_NOTIFICATION_ 1568 1569 // On MinGW, we can have both GTEST_OS_WINDOWS and GTEST_HAS_PTHREAD 1570 // defined, but we don't want to use MinGW's pthreads implementation, which 1571 // has conformance problems with some versions of the POSIX standard. 1572 # if GTEST_HAS_PTHREAD && !GTEST_OS_WINDOWS_MINGW 1573 1574 // As a C-function, ThreadFuncWithCLinkage cannot be templated itself. 1575 // Consequently, it cannot select a correct instantiation of ThreadWithParam 1576 // in order to call its Run(). Introducing ThreadWithParamBase as a 1577 // non-templated base class for ThreadWithParam allows us to bypass this 1578 // problem. 1579 class ThreadWithParamBase { 1580 public: 1581 virtual ~ThreadWithParamBase() {} 1582 virtual void Run() = 0; 1583 }; 1584 1585 // pthread_create() accepts a pointer to a function type with the C linkage. 1586 // According to the Standard (7.5/1), function types with different linkages 1587 // are different even if they are otherwise identical. Some compilers (for 1588 // example, SunStudio) treat them as different types. Since class methods 1589 // cannot be defined with C-linkage we need to define a free C-function to 1590 // pass into pthread_create(). 1591 extern "C" inline void* ThreadFuncWithCLinkage(void* thread) { 1592 static_cast<ThreadWithParamBase*>(thread)->Run(); 1593 return NULL; 1594 } 1595 1596 // Helper class for testing Google Test's multi-threading constructs. 1597 // To use it, write: 1598 // 1599 // void ThreadFunc(int param) { /* Do things with param */ } 1600 // Notification thread_can_start; 1601 // ... 1602 // // The thread_can_start parameter is optional; you can supply NULL. 1603 // ThreadWithParam<int> thread(&ThreadFunc, 5, &thread_can_start); 1604 // thread_can_start.Notify(); 1605 // 1606 // These classes are only for testing Google Test's own constructs. Do 1607 // not use them in user tests, either directly or indirectly. 1608 template <typename T> 1609 class ThreadWithParam : public ThreadWithParamBase { 1610 public: 1611 typedef void UserThreadFunc(T); 1612 1613 ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start) 1614 : func_(func), 1615 param_(param), 1616 thread_can_start_(thread_can_start), 1617 finished_(false) { 1618 ThreadWithParamBase* const base = this; 1619 // The thread can be created only after all fields except thread_ 1620 // have been initialized. 1621 GTEST_CHECK_POSIX_SUCCESS_( 1622 pthread_create(&thread_, 0, &ThreadFuncWithCLinkage, base)); 1623 } 1624 ~ThreadWithParam() { Join(); } 1625 1626 void Join() { 1627 if (!finished_) { 1628 GTEST_CHECK_POSIX_SUCCESS_(pthread_join(thread_, 0)); 1629 finished_ = true; 1630 } 1631 } 1632 1633 virtual void Run() { 1634 if (thread_can_start_ != NULL) 1635 thread_can_start_->WaitForNotification(); 1636 func_(param_); 1637 } 1638 1639 private: 1640 UserThreadFunc* const func_; // User-supplied thread function. 1641 const T param_; // User-supplied parameter to the thread function. 1642 // When non-NULL, used to block execution until the controller thread 1643 // notifies. 1644 Notification* const thread_can_start_; 1645 bool finished_; // true iff we know that the thread function has finished. 1646 pthread_t thread_; // The native thread object. 1647 1648 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam); 1649 }; 1650 # endif // !GTEST_OS_WINDOWS && GTEST_HAS_PTHREAD || 1651 // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ 1652 1653 # if GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ 1654 // Mutex and ThreadLocal have already been imported into the namespace. 1655 // Nothing to do here. 1656 1657 # elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT 1658 1659 // Mutex implements mutex on Windows platforms. It is used in conjunction 1660 // with class MutexLock: 1661 // 1662 // Mutex mutex; 1663 // ... 1664 // MutexLock lock(&mutex); // Acquires the mutex and releases it at the 1665 // // end of the current scope. 1666 // 1667 // A static Mutex *must* be defined or declared using one of the following 1668 // macros: 1669 // GTEST_DEFINE_STATIC_MUTEX_(g_some_mutex); 1670 // GTEST_DECLARE_STATIC_MUTEX_(g_some_mutex); 1671 // 1672 // (A non-static Mutex is defined/declared in the usual way). 1673 class GTEST_API_ Mutex { 1674 public: 1675 enum MutexType { kStatic = 0, kDynamic = 1 }; 1676 // We rely on kStaticMutex being 0 as it is to what the linker initializes 1677 // type_ in static mutexes. critical_section_ will be initialized lazily 1678 // in ThreadSafeLazyInit(). 1679 enum StaticConstructorSelector { kStaticMutex = 0 }; 1680 1681 // This constructor intentionally does nothing. It relies on type_ being 1682 // statically initialized to 0 (effectively setting it to kStatic) and on 1683 // ThreadSafeLazyInit() to lazily initialize the rest of the members. 1684 explicit Mutex(StaticConstructorSelector /*dummy*/) {} 1685 1686 Mutex(); 1687 ~Mutex(); 1688 1689 void Lock(); 1690 1691 void Unlock(); 1692 1693 // Does nothing if the current thread holds the mutex. Otherwise, crashes 1694 // with high probability. 1695 void AssertHeld(); 1696 1697 private: 1698 // Initializes owner_thread_id_ and critical_section_ in static mutexes. 1699 void ThreadSafeLazyInit(); 1700 1701 // Per http://blogs.msdn.com/b/oldnewthing/archive/2004/02/23/78395.aspx, 1702 // we assume that 0 is an invalid value for thread IDs. 1703 unsigned int owner_thread_id_; 1704 1705 // For static mutexes, we rely on these members being initialized to zeros 1706 // by the linker. 1707 MutexType type_; 1708 long critical_section_init_phase_; // NOLINT 1709 _RTL_CRITICAL_SECTION* critical_section_; 1710 1711 GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex); 1712 }; 1713 1714 # define GTEST_DECLARE_STATIC_MUTEX_(mutex) \ 1715 extern ::testing::internal::Mutex mutex 1716 1717 # define GTEST_DEFINE_STATIC_MUTEX_(mutex) \ 1718 ::testing::internal::Mutex mutex(::testing::internal::Mutex::kStaticMutex) 1719 1720 // We cannot name this class MutexLock because the ctor declaration would 1721 // conflict with a macro named MutexLock, which is defined on some 1722 // platforms. That macro is used as a defensive measure to prevent against 1723 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than 1724 // "MutexLock l(&mu)". Hence the typedef trick below. 1725 class GTestMutexLock { 1726 public: 1727 explicit GTestMutexLock(Mutex* mutex) 1728 : mutex_(mutex) { mutex_->Lock(); } 1729 1730 ~GTestMutexLock() { mutex_->Unlock(); } 1731 1732 private: 1733 Mutex* const mutex_; 1734 1735 GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock); 1736 }; 1737 1738 typedef GTestMutexLock MutexLock; 1739 1740 // Base class for ValueHolder<T>. Allows a caller to hold and delete a value 1741 // without knowing its type. 1742 class ThreadLocalValueHolderBase { 1743 public: 1744 virtual ~ThreadLocalValueHolderBase() {} 1745 }; 1746 1747 // Provides a way for a thread to send notifications to a ThreadLocal 1748 // regardless of its parameter type. 1749 class ThreadLocalBase { 1750 public: 1751 // Creates a new ValueHolder<T> object holding a default value passed to 1752 // this ThreadLocal<T>'s constructor and returns it. It is the caller's 1753 // responsibility not to call this when the ThreadLocal<T> instance already 1754 // has a value on the current thread. 1755 virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const = 0; 1756 1757 protected: 1758 ThreadLocalBase() {} 1759 virtual ~ThreadLocalBase() {} 1760 1761 private: 1762 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocalBase); 1763 }; 1764 1765 // Maps a thread to a set of ThreadLocals that have values instantiated on that 1766 // thread and notifies them when the thread exits. A ThreadLocal instance is 1767 // expected to persist until all threads it has values on have terminated. 1768 class GTEST_API_ ThreadLocalRegistry { 1769 public: 1770 // Registers thread_local_instance as having value on the current thread. 1771 // Returns a value that can be used to identify the thread from other threads. 1772 static ThreadLocalValueHolderBase* GetValueOnCurrentThread( 1773 const ThreadLocalBase* thread_local_instance); 1774 1775 // Invoked when a ThreadLocal instance is destroyed. 1776 static void OnThreadLocalDestroyed( 1777 const ThreadLocalBase* thread_local_instance); 1778 }; 1779 1780 class GTEST_API_ ThreadWithParamBase { 1781 public: 1782 void Join(); 1783 1784 protected: 1785 class Runnable { 1786 public: 1787 virtual ~Runnable() {} 1788 virtual void Run() = 0; 1789 }; 1790 1791 ThreadWithParamBase(Runnable *runnable, Notification* thread_can_start); 1792 virtual ~ThreadWithParamBase(); 1793 1794 private: 1795 AutoHandle thread_; 1796 }; 1797 1798 // Helper class for testing Google Test's multi-threading constructs. 1799 template <typename T> 1800 class ThreadWithParam : public ThreadWithParamBase { 1801 public: 1802 typedef void UserThreadFunc(T); 1803 1804 ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start) 1805 : ThreadWithParamBase(new RunnableImpl(func, param), thread_can_start) { 1806 } 1807 virtual ~ThreadWithParam() {} 1808 1809 private: 1810 class RunnableImpl : public Runnable { 1811 public: 1812 RunnableImpl(UserThreadFunc* func, T param) 1813 : func_(func), 1814 param_(param) { 1815 } 1816 virtual ~RunnableImpl() {} 1817 virtual void Run() { 1818 func_(param_); 1819 } 1820 1821 private: 1822 UserThreadFunc* const func_; 1823 const T param_; 1824 1825 GTEST_DISALLOW_COPY_AND_ASSIGN_(RunnableImpl); 1826 }; 1827 1828 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam); 1829 }; 1830 1831 // Implements thread-local storage on Windows systems. 1832 // 1833 // // Thread 1 1834 // ThreadLocal<int> tl(100); // 100 is the default value for each thread. 1835 // 1836 // // Thread 2 1837 // tl.set(150); // Changes the value for thread 2 only. 1838 // EXPECT_EQ(150, tl.get()); 1839 // 1840 // // Thread 1 1841 // EXPECT_EQ(100, tl.get()); // In thread 1, tl has the original value. 1842 // tl.set(200); 1843 // EXPECT_EQ(200, tl.get()); 1844 // 1845 // The template type argument T must have a public copy constructor. 1846 // In addition, the default ThreadLocal constructor requires T to have 1847 // a public default constructor. 1848 // 1849 // The users of a TheadLocal instance have to make sure that all but one 1850 // threads (including the main one) using that instance have exited before 1851 // destroying it. Otherwise, the per-thread objects managed for them by the 1852 // ThreadLocal instance are not guaranteed to be destroyed on all platforms. 1853 // 1854 // Google Test only uses global ThreadLocal objects. That means they 1855 // will die after main() has returned. Therefore, no per-thread 1856 // object managed by Google Test will be leaked as long as all threads 1857 // using Google Test have exited when main() returns. 1858 template <typename T> 1859 class ThreadLocal : public ThreadLocalBase { 1860 public: 1861 ThreadLocal() : default_factory_(new DefaultValueHolderFactory()) {} 1862 explicit ThreadLocal(const T& value) 1863 : default_factory_(new InstanceValueHolderFactory(value)) {} 1864 1865 ~ThreadLocal() { ThreadLocalRegistry::OnThreadLocalDestroyed(this); } 1866 1867 T* pointer() { return GetOrCreateValue(); } 1868 const T* pointer() const { return GetOrCreateValue(); } 1869 const T& get() const { return *pointer(); } 1870 void set(const T& value) { *pointer() = value; } 1871 1872 private: 1873 // Holds a value of T. Can be deleted via its base class without the caller 1874 // knowing the type of T. 1875 class ValueHolder : public ThreadLocalValueHolderBase { 1876 public: 1877 ValueHolder() : value_() {} 1878 explicit ValueHolder(const T& value) : value_(value) {} 1879 1880 T* pointer() { return &value_; } 1881 1882 private: 1883 T value_; 1884 GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder); 1885 }; 1886 1887 1888 T* GetOrCreateValue() const { 1889 return static_cast<ValueHolder*>( 1890 ThreadLocalRegistry::GetValueOnCurrentThread(this))->pointer(); 1891 } 1892 1893 virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const { 1894 return default_factory_->MakeNewHolder(); 1895 } 1896 1897 class ValueHolderFactory { 1898 public: 1899 ValueHolderFactory() {} 1900 virtual ~ValueHolderFactory() {} 1901 virtual ValueHolder* MakeNewHolder() const = 0; 1902 1903 private: 1904 GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolderFactory); 1905 }; 1906 1907 class DefaultValueHolderFactory : public ValueHolderFactory { 1908 public: 1909 DefaultValueHolderFactory() {} 1910 virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); } 1911 1912 private: 1913 GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory); 1914 }; 1915 1916 class InstanceValueHolderFactory : public ValueHolderFactory { 1917 public: 1918 explicit InstanceValueHolderFactory(const T& value) : value_(value) {} 1919 virtual ValueHolder* MakeNewHolder() const { 1920 return new ValueHolder(value_); 1921 } 1922 1923 private: 1924 const T value_; // The value for each thread. 1925 1926 GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory); 1927 }; 1928 1929 scoped_ptr<ValueHolderFactory> default_factory_; 1930 1931 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal); 1932 }; 1933 1934 # elif GTEST_HAS_PTHREAD 1935 1936 // MutexBase and Mutex implement mutex on pthreads-based platforms. 1937 class MutexBase { 1938 public: 1939 // Acquires this mutex. 1940 void Lock() { 1941 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&mutex_)); 1942 owner_ = pthread_self(); 1943 has_owner_ = true; 1944 } 1945 1946 // Releases this mutex. 1947 void Unlock() { 1948 // Since the lock is being released the owner_ field should no longer be 1949 // considered valid. We don't protect writing to has_owner_ here, as it's 1950 // the caller's responsibility to ensure that the current thread holds the 1951 // mutex when this is called. 1952 has_owner_ = false; 1953 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&mutex_)); 1954 } 1955 1956 // Does nothing if the current thread holds the mutex. Otherwise, crashes 1957 // with high probability. 1958 void AssertHeld() const { 1959 GTEST_CHECK_(has_owner_ && pthread_equal(owner_, pthread_self())) 1960 << "The current thread is not holding the mutex @" << this; 1961 } 1962 1963 // A static mutex may be used before main() is entered. It may even 1964 // be used before the dynamic initialization stage. Therefore we 1965 // must be able to initialize a static mutex object at link time. 1966 // This means MutexBase has to be a POD and its member variables 1967 // have to be public. 1968 public: 1969 pthread_mutex_t mutex_; // The underlying pthread mutex. 1970 // has_owner_ indicates whether the owner_ field below contains a valid thread 1971 // ID and is therefore safe to inspect (e.g., to use in pthread_equal()). All 1972 // accesses to the owner_ field should be protected by a check of this field. 1973 // An alternative might be to memset() owner_ to all zeros, but there's no 1974 // guarantee that a zero'd pthread_t is necessarily invalid or even different 1975 // from pthread_self(). 1976 bool has_owner_; 1977 pthread_t owner_; // The thread holding the mutex. 1978 }; 1979 1980 // Forward-declares a static mutex. 1981 # define GTEST_DECLARE_STATIC_MUTEX_(mutex) \ 1982 extern ::testing::internal::MutexBase mutex 1983 1984 // Defines and statically (i.e. at link time) initializes a static mutex. 1985 # define GTEST_DEFINE_STATIC_MUTEX_(mutex) \ 1986 ::testing::internal::MutexBase mutex = { PTHREAD_MUTEX_INITIALIZER, false, pthread_t() } 1987 1988 // The Mutex class can only be used for mutexes created at runtime. It 1989 // shares its API with MutexBase otherwise. 1990 class Mutex : public MutexBase { 1991 public: 1992 Mutex() { 1993 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL)); 1994 has_owner_ = false; 1995 } 1996 ~Mutex() { 1997 GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&mutex_)); 1998 } 1999 2000 private: 2001 GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex); 2002 }; 2003 2004 // We cannot name this class MutexLock because the ctor declaration would 2005 // conflict with a macro named MutexLock, which is defined on some 2006 // platforms. That macro is used as a defensive measure to prevent against 2007 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than 2008 // "MutexLock l(&mu)". Hence the typedef trick below. 2009 class GTestMutexLock { 2010 public: 2011 explicit GTestMutexLock(MutexBase* mutex) 2012 : mutex_(mutex) { mutex_->Lock(); } 2013 2014 ~GTestMutexLock() { mutex_->Unlock(); } 2015 2016 private: 2017 MutexBase* const mutex_; 2018 2019 GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock); 2020 }; 2021 2022 typedef GTestMutexLock MutexLock; 2023 2024 // Helpers for ThreadLocal. 2025 2026 // pthread_key_create() requires DeleteThreadLocalValue() to have 2027 // C-linkage. Therefore it cannot be templatized to access 2028 // ThreadLocal<T>. Hence the need for class 2029 // ThreadLocalValueHolderBase. 2030 class ThreadLocalValueHolderBase { 2031 public: 2032 virtual ~ThreadLocalValueHolderBase() {} 2033 }; 2034 2035 // Called by pthread to delete thread-local data stored by 2036 // pthread_setspecific(). 2037 extern "C" inline void DeleteThreadLocalValue(void* value_holder) { 2038 delete static_cast<ThreadLocalValueHolderBase*>(value_holder); 2039 } 2040 2041 // Implements thread-local storage on pthreads-based systems. 2042 template <typename T> 2043 class ThreadLocal { 2044 public: 2045 ThreadLocal() 2046 : key_(CreateKey()), default_factory_(new DefaultValueHolderFactory()) {} 2047 explicit ThreadLocal(const T& value) 2048 : key_(CreateKey()), 2049 default_factory_(new InstanceValueHolderFactory(value)) {} 2050 2051 ~ThreadLocal() { 2052 // Destroys the managed object for the current thread, if any. 2053 DeleteThreadLocalValue(pthread_getspecific(key_)); 2054 2055 // Releases resources associated with the key. This will *not* 2056 // delete managed objects for other threads. 2057 GTEST_CHECK_POSIX_SUCCESS_(pthread_key_delete(key_)); 2058 } 2059 2060 T* pointer() { return GetOrCreateValue(); } 2061 const T* pointer() const { return GetOrCreateValue(); } 2062 const T& get() const { return *pointer(); } 2063 void set(const T& value) { *pointer() = value; } 2064 2065 private: 2066 // Holds a value of type T. 2067 class ValueHolder : public ThreadLocalValueHolderBase { 2068 public: 2069 ValueHolder() : value_() {} 2070 explicit ValueHolder(const T& value) : value_(value) {} 2071 2072 T* pointer() { return &value_; } 2073 2074 private: 2075 T value_; 2076 GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder); 2077 }; 2078 2079 static pthread_key_t CreateKey() { 2080 pthread_key_t key; 2081 // When a thread exits, DeleteThreadLocalValue() will be called on 2082 // the object managed for that thread. 2083 GTEST_CHECK_POSIX_SUCCESS_( 2084 pthread_key_create(&key, &DeleteThreadLocalValue)); 2085 return key; 2086 } 2087 2088 T* GetOrCreateValue() const { 2089 ThreadLocalValueHolderBase* const holder = 2090 static_cast<ThreadLocalValueHolderBase*>(pthread_getspecific(key_)); 2091 if (holder != NULL) { 2092 return CheckedDowncastToActualType<ValueHolder>(holder)->pointer(); 2093 } 2094 2095 ValueHolder* const new_holder = default_factory_->MakeNewHolder(); 2096 ThreadLocalValueHolderBase* const holder_base = new_holder; 2097 GTEST_CHECK_POSIX_SUCCESS_(pthread_setspecific(key_, holder_base)); 2098 return new_holder->pointer(); 2099 } 2100 2101 class ValueHolderFactory { 2102 public: 2103 ValueHolderFactory() {} 2104 virtual ~ValueHolderFactory() {} 2105 virtual ValueHolder* MakeNewHolder() const = 0; 2106 2107 private: 2108 GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolderFactory); 2109 }; 2110 2111 class DefaultValueHolderFactory : public ValueHolderFactory { 2112 public: 2113 DefaultValueHolderFactory() {} 2114 virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); } 2115 2116 private: 2117 GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory); 2118 }; 2119 2120 class InstanceValueHolderFactory : public ValueHolderFactory { 2121 public: 2122 explicit InstanceValueHolderFactory(const T& value) : value_(value) {} 2123 virtual ValueHolder* MakeNewHolder() const { 2124 return new ValueHolder(value_); 2125 } 2126 2127 private: 2128 const T value_; // The value for each thread. 2129 2130 GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory); 2131 }; 2132 2133 // A key pthreads uses for looking up per-thread values. 2134 const pthread_key_t key_; 2135 scoped_ptr<ValueHolderFactory> default_factory_; 2136 2137 GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal); 2138 }; 2139 2140 # endif // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ 2141 2142 #else // GTEST_IS_THREADSAFE 2143 2144 // A dummy implementation of synchronization primitives (mutex, lock, 2145 // and thread-local variable). Necessary for compiling Google Test where 2146 // mutex is not supported - using Google Test in multiple threads is not 2147 // supported on such platforms. 2148 2149 class Mutex { 2150 public: 2151 Mutex() {} 2152 void Lock() {} 2153 void Unlock() {} 2154 void AssertHeld() const {} 2155 }; 2156 2157 # define GTEST_DECLARE_STATIC_MUTEX_(mutex) \ 2158 extern ::testing::internal::Mutex mutex 2159 2160 # define GTEST_DEFINE_STATIC_MUTEX_(mutex) ::testing::internal::Mutex mutex 2161 2162 // We cannot name this class MutexLock because the ctor declaration would 2163 // conflict with a macro named MutexLock, which is defined on some 2164 // platforms. That macro is used as a defensive measure to prevent against 2165 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than 2166 // "MutexLock l(&mu)". Hence the typedef trick below. 2167 class GTestMutexLock { 2168 public: 2169 explicit GTestMutexLock(Mutex*) {} // NOLINT 2170 }; 2171 2172 typedef GTestMutexLock MutexLock; 2173 2174 template <typename T> 2175 class ThreadLocal { 2176 public: 2177 ThreadLocal() : value_() {} 2178 explicit ThreadLocal(const T& value) : value_(value) {} 2179 T* pointer() { return &value_; } 2180 const T* pointer() const { return &value_; } 2181 const T& get() const { return value_; } 2182 void set(const T& value) { value_ = value; } 2183 private: 2184 T value_; 2185 }; 2186 2187 #endif // GTEST_IS_THREADSAFE 2188 2189 // Returns the number of threads running in the process, or 0 to indicate that 2190 // we cannot detect it. 2191 GTEST_API_ size_t GetThreadCount(); 2192 2193 // Passing non-POD classes through ellipsis (...) crashes the ARM 2194 // compiler and generates a warning in Sun Studio. The Nokia Symbian 2195 // and the IBM XL C/C++ compiler try to instantiate a copy constructor 2196 // for objects passed through ellipsis (...), failing for uncopyable 2197 // objects. We define this to ensure that only POD is passed through 2198 // ellipsis on these systems. 2199 #if defined(__SYMBIAN32__) || defined(__IBMCPP__) || defined(__SUNPRO_CC) 2200 // We lose support for NULL detection where the compiler doesn't like 2201 // passing non-POD classes through ellipsis (...). 2202 # define GTEST_ELLIPSIS_NEEDS_POD_ 1 2203 #else 2204 # define GTEST_CAN_COMPARE_NULL 1 2205 #endif 2206 2207 // The Nokia Symbian and IBM XL C/C++ compilers cannot decide between 2208 // const T& and const T* in a function template. These compilers 2209 // _can_ decide between class template specializations for T and T*, 2210 // so a tr1::type_traits-like is_pointer works. 2211 #if defined(__SYMBIAN32__) || defined(__IBMCPP__) 2212 # define GTEST_NEEDS_IS_POINTER_ 1 2213 #endif 2214 2215 template <bool bool_value> 2216 struct bool_constant { 2217 typedef bool_constant<bool_value> type; 2218 static const bool value = bool_value; 2219 }; 2220 template <bool bool_value> const bool bool_constant<bool_value>::value; 2221 2222 typedef bool_constant<false> false_type; 2223 typedef bool_constant<true> true_type; 2224 2225 template <typename T> 2226 struct is_pointer : public false_type {}; 2227 2228 template <typename T> 2229 struct is_pointer<T*> : public true_type {}; 2230 2231 template <typename Iterator> 2232 struct IteratorTraits { 2233 typedef typename Iterator::value_type value_type; 2234 }; 2235 2236 template <typename T> 2237 struct IteratorTraits<T*> { 2238 typedef T value_type; 2239 }; 2240 2241 template <typename T> 2242 struct IteratorTraits<const T*> { 2243 typedef T value_type; 2244 }; 2245 2246 #if GTEST_OS_WINDOWS 2247 # define GTEST_PATH_SEP_ "\\" 2248 # define GTEST_HAS_ALT_PATH_SEP_ 1 2249 // The biggest signed integer type the compiler supports. 2250 typedef __int64 BiggestInt; 2251 #else 2252 # define GTEST_PATH_SEP_ "/" 2253 # define GTEST_HAS_ALT_PATH_SEP_ 0 2254 typedef long long BiggestInt; // NOLINT 2255 #endif // GTEST_OS_WINDOWS 2256 2257 // Utilities for char. 2258 2259 // isspace(int ch) and friends accept an unsigned char or EOF. char 2260 // may be signed, depending on the compiler (or compiler flags). 2261 // Therefore we need to cast a char to unsigned char before calling 2262 // isspace(), etc. 2263 2264 inline bool IsAlpha(char ch) { 2265 return isalpha(static_cast<unsigned char>(ch)) != 0; 2266 } 2267 inline bool IsAlNum(char ch) { 2268 return isalnum(static_cast<unsigned char>(ch)) != 0; 2269 } 2270 inline bool IsDigit(char ch) { 2271 return isdigit(static_cast<unsigned char>(ch)) != 0; 2272 } 2273 inline bool IsLower(char ch) { 2274 return islower(static_cast<unsigned char>(ch)) != 0; 2275 } 2276 inline bool IsSpace(char ch) { 2277 return isspace(static_cast<unsigned char>(ch)) != 0; 2278 } 2279 inline bool IsUpper(char ch) { 2280 return isupper(static_cast<unsigned char>(ch)) != 0; 2281 } 2282 inline bool IsXDigit(char ch) { 2283 return isxdigit(static_cast<unsigned char>(ch)) != 0; 2284 } 2285 inline bool IsXDigit(wchar_t ch) { 2286 const unsigned char low_byte = static_cast<unsigned char>(ch); 2287 return ch == low_byte && isxdigit(low_byte) != 0; 2288 } 2289 2290 inline char ToLower(char ch) { 2291 return static_cast<char>(tolower(static_cast<unsigned char>(ch))); 2292 } 2293 inline char ToUpper(char ch) { 2294 return static_cast<char>(toupper(static_cast<unsigned char>(ch))); 2295 } 2296 2297 inline std::string StripTrailingSpaces(std::string str) { 2298 std::string::iterator it = str.end(); 2299 while (it != str.begin() && IsSpace(*--it)) 2300 it = str.erase(it); 2301 return str; 2302 } 2303 2304 // The testing::internal::posix namespace holds wrappers for common 2305 // POSIX functions. These wrappers hide the differences between 2306 // Windows/MSVC and POSIX systems. Since some compilers define these 2307 // standard functions as macros, the wrapper cannot have the same name 2308 // as the wrapped function. 2309 2310 namespace posix { 2311 2312 // Functions with a different name on Windows. 2313 2314 #if GTEST_OS_WINDOWS 2315 2316 typedef struct _stat StatStruct; 2317 2318 # ifdef __BORLANDC__ 2319 inline int IsATTY(int fd) { return isatty(fd); } 2320 inline int StrCaseCmp(const char* s1, const char* s2) { 2321 return stricmp(s1, s2); 2322 } 2323 inline char* StrDup(const char* src) { return strdup(src); } 2324 # else // !__BORLANDC__ 2325 # if GTEST_OS_WINDOWS_MOBILE 2326 inline int IsATTY(int /* fd */) { return 0; } 2327 # else 2328 inline int IsATTY(int fd) { return _isatty(fd); } 2329 # endif // GTEST_OS_WINDOWS_MOBILE 2330 inline int StrCaseCmp(const char* s1, const char* s2) { 2331 return _stricmp(s1, s2); 2332 } 2333 inline char* StrDup(const char* src) { return _strdup(src); } 2334 # endif // __BORLANDC__ 2335 2336 # if GTEST_OS_WINDOWS_MOBILE 2337 inline int FileNo(FILE* file) { return reinterpret_cast<int>(_fileno(file)); } 2338 // Stat(), RmDir(), and IsDir() are not needed on Windows CE at this 2339 // time and thus not defined there. 2340 # else 2341 inline int FileNo(FILE* file) { return _fileno(file); } 2342 inline int Stat(const char* path, StatStruct* buf) { return _stat(path, buf); } 2343 inline int RmDir(const char* dir) { return _rmdir(dir); } 2344 inline bool IsDir(const StatStruct& st) { 2345 return (_S_IFDIR & st.st_mode) != 0; 2346 } 2347 # endif // GTEST_OS_WINDOWS_MOBILE 2348 2349 #else 2350 2351 typedef struct stat StatStruct; 2352 2353 inline int FileNo(FILE* file) { return fileno(file); } 2354 inline int IsATTY(int fd) { return isatty(fd); } 2355 inline int Stat(const char* path, StatStruct* buf) { return stat(path, buf); } 2356 inline int StrCaseCmp(const char* s1, const char* s2) { 2357 return strcasecmp(s1, s2); 2358 } 2359 inline char* StrDup(const char* src) { return strdup(src); } 2360 inline int RmDir(const char* dir) { return rmdir(dir); } 2361 inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); } 2362 2363 #endif // GTEST_OS_WINDOWS 2364 2365 // Functions deprecated by MSVC 8.0. 2366 2367 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996 /* deprecated function */) 2368 2369 inline const char* StrNCpy(char* dest, const char* src, size_t n) { 2370 return strncpy(dest, src, n); 2371 } 2372 2373 // ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and 2374 // StrError() aren't needed on Windows CE at this time and thus not 2375 // defined there. 2376 2377 #if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT 2378 inline int ChDir(const char* dir) { return chdir(dir); } 2379 #endif 2380 inline FILE* FOpen(const char* path, const char* mode) { 2381 return fopen(path, mode); 2382 } 2383 #if !GTEST_OS_WINDOWS_MOBILE 2384 inline FILE *FReopen(const char* path, const char* mode, FILE* stream) { 2385 return freopen(path, mode, stream); 2386 } 2387 inline FILE* FDOpen(int fd, const char* mode) { return fdopen(fd, mode); } 2388 #endif 2389 inline int FClose(FILE* fp) { return fclose(fp); } 2390 #if !GTEST_OS_WINDOWS_MOBILE 2391 inline int Read(int fd, void* buf, unsigned int count) { 2392 return static_cast<int>(read(fd, buf, count)); 2393 } 2394 inline int Write(int fd, const void* buf, unsigned int count) { 2395 return static_cast<int>(write(fd, buf, count)); 2396 } 2397 inline int Close(int fd) { return close(fd); } 2398 inline const char* StrError(int errnum) { return strerror(errnum); } 2399 #endif 2400 inline const char* GetEnv(const char* name) { 2401 #if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE | GTEST_OS_WINDOWS_RT 2402 // We are on Windows CE, which has no environment variables. 2403 static_cast<void>(name); // To prevent 'unused argument' warning. 2404 return NULL; 2405 #elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9) 2406 // Environment variables which we programmatically clear will be set to the 2407 // empty string rather than unset (NULL). Handle that case. 2408 const char* const env = getenv(name); 2409 return (env != NULL && env[0] != '\0') ? env : NULL; 2410 #else 2411 return getenv(name); 2412 #endif 2413 } 2414 2415 GTEST_DISABLE_MSC_WARNINGS_POP_() 2416 2417 #if GTEST_OS_WINDOWS_MOBILE 2418 // Windows CE has no C library. The abort() function is used in 2419 // several places in Google Test. This implementation provides a reasonable 2420 // imitation of standard behaviour. 2421 void Abort(); 2422 #else 2423 inline void Abort() { abort(); } 2424 #endif // GTEST_OS_WINDOWS_MOBILE 2425 2426 } // namespace posix 2427 2428 // MSVC "deprecates" snprintf and issues warnings wherever it is used. In 2429 // order to avoid these warnings, we need to use _snprintf or _snprintf_s on 2430 // MSVC-based platforms. We map the GTEST_SNPRINTF_ macro to the appropriate 2431 // function in order to achieve that. We use macro definition here because 2432 // snprintf is a variadic function. 2433 #if _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE 2434 // MSVC 2005 and above support variadic macros. 2435 # define GTEST_SNPRINTF_(buffer, size, format, ...) \ 2436 _snprintf_s(buffer, size, size, format, __VA_ARGS__) 2437 #elif defined(_MSC_VER) 2438 // Windows CE does not define _snprintf_s and MSVC prior to 2005 doesn't 2439 // complain about _snprintf. 2440 # define GTEST_SNPRINTF_ _snprintf 2441 #else 2442 # define GTEST_SNPRINTF_ snprintf 2443 #endif 2444 2445 // The maximum number a BiggestInt can represent. This definition 2446 // works no matter BiggestInt is represented in one's complement or 2447 // two's complement. 2448 // 2449 // We cannot rely on numeric_limits in STL, as __int64 and long long 2450 // are not part of standard C++ and numeric_limits doesn't need to be 2451 // defined for them. 2452 const BiggestInt kMaxBiggestInt = 2453 ~(static_cast<BiggestInt>(1) << (8*sizeof(BiggestInt) - 1)); 2454 2455 // This template class serves as a compile-time function from size to 2456 // type. It maps a size in bytes to a primitive type with that 2457 // size. e.g. 2458 // 2459 // TypeWithSize<4>::UInt 2460 // 2461 // is typedef-ed to be unsigned int (unsigned integer made up of 4 2462 // bytes). 2463 // 2464 // Such functionality should belong to STL, but I cannot find it 2465 // there. 2466 // 2467 // Google Test uses this class in the implementation of floating-point 2468 // comparison. 2469 // 2470 // For now it only handles UInt (unsigned int) as that's all Google Test 2471 // needs. Other types can be easily added in the future if need 2472 // arises. 2473 template <size_t size> 2474 class TypeWithSize { 2475 public: 2476 // This prevents the user from using TypeWithSize<N> with incorrect 2477 // values of N. 2478 typedef void UInt; 2479 }; 2480 2481 // The specialization for size 4. 2482 template <> 2483 class TypeWithSize<4> { 2484 public: 2485 // unsigned int has size 4 in both gcc and MSVC. 2486 // 2487 // As base/basictypes.h doesn't compile on Windows, we cannot use 2488 // uint32, uint64, and etc here. 2489 typedef int Int; 2490 typedef unsigned int UInt; 2491 }; 2492 2493 // The specialization for size 8. 2494 template <> 2495 class TypeWithSize<8> { 2496 public: 2497 #if GTEST_OS_WINDOWS 2498 typedef __int64 Int; 2499 typedef unsigned __int64 UInt; 2500 #else 2501 typedef long long Int; // NOLINT 2502 typedef unsigned long long UInt; // NOLINT 2503 #endif // GTEST_OS_WINDOWS 2504 }; 2505 2506 // Integer types of known sizes. 2507 typedef TypeWithSize<4>::Int Int32; 2508 typedef TypeWithSize<4>::UInt UInt32; 2509 typedef TypeWithSize<8>::Int Int64; 2510 typedef TypeWithSize<8>::UInt UInt64; 2511 typedef TypeWithSize<8>::Int TimeInMillis; // Represents time in milliseconds. 2512 2513 // Utilities for command line flags and environment variables. 2514 2515 // Macro for referencing flags. 2516 #if !defined(GTEST_FLAG) 2517 # define GTEST_FLAG(name) FLAGS_gtest_##name 2518 #endif // !defined(GTEST_FLAG) 2519 2520 #if !defined(GTEST_USE_OWN_FLAGFILE_FLAG_) 2521 # define GTEST_USE_OWN_FLAGFILE_FLAG_ 1 2522 #endif // !defined(GTEST_USE_OWN_FLAGFILE_FLAG_) 2523 2524 #if !defined(GTEST_DECLARE_bool_) 2525 # define GTEST_FLAG_SAVER_ ::testing::internal::GTestFlagSaver 2526 2527 // Macros for declaring flags. 2528 # define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name) 2529 # define GTEST_DECLARE_int32_(name) \ 2530 GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name) 2531 #define GTEST_DECLARE_string_(name) \ 2532 GTEST_API_ extern ::std::string GTEST_FLAG(name) 2533 2534 // Macros for defining flags. 2535 #define GTEST_DEFINE_bool_(name, default_val, doc) \ 2536 GTEST_API_ bool GTEST_FLAG(name) = (default_val) 2537 #define GTEST_DEFINE_int32_(name, default_val, doc) \ 2538 GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val) 2539 #define GTEST_DEFINE_string_(name, default_val, doc) \ 2540 GTEST_API_ ::std::string GTEST_FLAG(name) = (default_val) 2541 2542 #endif // !defined(GTEST_DECLARE_bool_) 2543 2544 // Thread annotations 2545 #if !defined(GTEST_EXCLUSIVE_LOCK_REQUIRED_) 2546 # define GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks) 2547 # define GTEST_LOCK_EXCLUDED_(locks) 2548 #endif // !defined(GTEST_EXCLUSIVE_LOCK_REQUIRED_) 2549 2550 // Parses 'str' for a 32-bit signed integer. If successful, writes the result 2551 // to *value and returns true; otherwise leaves *value unchanged and returns 2552 // false. 2553 // TODO(chandlerc): Find a better way to refactor flag and environment parsing 2554 // out of both gtest-port.cc and gtest.cc to avoid exporting this utility 2555 // function. 2556 bool ParseInt32(const Message& src_text, const char* str, Int32* value); 2557 2558 // Parses a bool/Int32/string from the environment variable 2559 // corresponding to the given Google Test flag. 2560 bool BoolFromGTestEnv(const char* flag, bool default_val); 2561 GTEST_API_ Int32 Int32FromGTestEnv(const char* flag, Int32 default_val); 2562 std::string StringFromGTestEnv(const char* flag, const char* default_val); 2563 2564 } // namespace internal 2565 } // namespace testing 2566 2567 #endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_ 2568