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gtest-port.h
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1 // Copyright 2005, Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
8 // * Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
14 // * Neither the name of Google Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 //
30 // Authors: wan@google.com (Zhanyong Wan)
31 //
32 // Low-level types and utilities for porting Google Test to various
33 // platforms. All macros ending with _ and symbols defined in an
34 // internal namespace are subject to change without notice. Code
35 // outside Google Test MUST NOT USE THEM DIRECTLY. Macros that don't
36 // end with _ are part of Google Test's public API and can be used by
37 // code outside Google Test.
38 //
39 // This file is fundamental to Google Test. All other Google Test source
40 // files are expected to #include this. Therefore, it cannot #include
41 // any other Google Test header.
42 
43 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
44 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
45 
46 // Environment-describing macros
47 // -----------------------------
48 //
49 // Google Test can be used in many different environments. Macros in
50 // this section tell Google Test what kind of environment it is being
51 // used in, such that Google Test can provide environment-specific
52 // features and implementations.
53 //
54 // Google Test tries to automatically detect the properties of its
55 // environment, so users usually don't need to worry about these
56 // macros. However, the automatic detection is not perfect.
57 // Sometimes it's necessary for a user to define some of the following
58 // macros in the build script to override Google Test's decisions.
59 //
60 // If the user doesn't define a macro in the list, Google Test will
61 // provide a default definition. After this header is #included, all
62 // macros in this list will be defined to either 1 or 0.
63 //
64 // Notes to maintainers:
65 // - Each macro here is a user-tweakable knob; do not grow the list
66 // lightly.
67 // - Use #if to key off these macros. Don't use #ifdef or "#if
68 // defined(...)", which will not work as these macros are ALWAYS
69 // defined.
70 //
71 // GTEST_HAS_CLONE - Define it to 1/0 to indicate that clone(2)
72 // is/isn't available.
73 // GTEST_HAS_EXCEPTIONS - Define it to 1/0 to indicate that exceptions
74 // are enabled.
75 // GTEST_HAS_GLOBAL_STRING - Define it to 1/0 to indicate that ::string
76 // is/isn't available (some systems define
77 // ::string, which is different to std::string).
78 // GTEST_HAS_GLOBAL_WSTRING - Define it to 1/0 to indicate that ::string
79 // is/isn't available (some systems define
80 // ::wstring, which is different to std::wstring).
81 // GTEST_HAS_POSIX_RE - Define it to 1/0 to indicate that POSIX regular
82 // expressions are/aren't available.
83 // GTEST_HAS_PTHREAD - Define it to 1/0 to indicate that <pthread.h>
84 // is/isn't available.
85 // GTEST_HAS_RTTI - Define it to 1/0 to indicate that RTTI is/isn't
86 // enabled.
87 // GTEST_HAS_STD_WSTRING - Define it to 1/0 to indicate that
88 // std::wstring does/doesn't work (Google Test can
89 // be used where std::wstring is unavailable).
90 // GTEST_HAS_TR1_TUPLE - Define it to 1/0 to indicate tr1::tuple
91 // is/isn't available.
92 // GTEST_HAS_SEH - Define it to 1/0 to indicate whether the
93 // compiler supports Microsoft's "Structured
94 // Exception Handling".
95 // GTEST_HAS_STREAM_REDIRECTION
96 // - Define it to 1/0 to indicate whether the
97 // platform supports I/O stream redirection using
98 // dup() and dup2().
99 // GTEST_USE_OWN_TR1_TUPLE - Define it to 1/0 to indicate whether Google
100 // Test's own tr1 tuple implementation should be
101 // used. Unused when the user sets
102 // GTEST_HAS_TR1_TUPLE to 0.
103 // GTEST_LANG_CXX11 - Define it to 1/0 to indicate that Google Test
104 // is building in C++11/C++98 mode.
105 // GTEST_LINKED_AS_SHARED_LIBRARY
106 // - Define to 1 when compiling tests that use
107 // Google Test as a shared library (known as
108 // DLL on Windows).
109 // GTEST_CREATE_SHARED_LIBRARY
110 // - Define to 1 when compiling Google Test itself
111 // as a shared library.
112 
113 // Platform-indicating macros
114 // --------------------------
115 //
116 // Macros indicating the platform on which Google Test is being used
117 // (a macro is defined to 1 if compiled on the given platform;
118 // otherwise UNDEFINED -- it's never defined to 0.). Google Test
119 // defines these macros automatically. Code outside Google Test MUST
120 // NOT define them.
121 //
122 // GTEST_OS_AIX - IBM AIX
123 // GTEST_OS_CYGWIN - Cygwin
124 // GTEST_OS_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@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@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 {
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  GTEST_OS_NETBSD)
795 # define GTEST_HAS_DEATH_TEST 1
796 #endif
797 
798 // We don't support MSVC 7.1 with exceptions disabled now. Therefore
799 // all the compilers we care about are adequate for supporting
800 // value-parameterized tests.
801 #define GTEST_HAS_PARAM_TEST 1
802 
803 // Determines whether to support type-driven tests.
804 
805 // Typed tests need <typeinfo> and variadic macros, which GCC, VC++ 8.0,
806 // Sun Pro CC, IBM Visual Age, and HP aCC support.
807 #if defined(__GNUC__) || (_MSC_VER >= 1400) || defined(__SUNPRO_CC) || \
808  defined(__IBMCPP__) || defined(__HP_aCC)
809 # define GTEST_HAS_TYPED_TEST 1
810 # define GTEST_HAS_TYPED_TEST_P 1
811 #endif
812 
813 // Determines whether to support Combine(). This only makes sense when
814 // value-parameterized tests are enabled. The implementation doesn't
815 // work on Sun Studio since it doesn't understand templated conversion
816 // operators.
817 #if GTEST_HAS_PARAM_TEST && GTEST_HAS_TR1_TUPLE && !defined(__SUNPRO_CC)
818 # define GTEST_HAS_COMBINE 1
819 #endif
820 
821 // Determines whether the system compiler uses UTF-16 for encoding wide strings.
822 #define GTEST_WIDE_STRING_USES_UTF16_ \
823  (GTEST_OS_WINDOWS || GTEST_OS_CYGWIN || GTEST_OS_SYMBIAN || GTEST_OS_AIX)
824 
825 // Determines whether test results can be streamed to a socket.
826 #if GTEST_OS_LINUX
827 # define GTEST_CAN_STREAM_RESULTS_ 1
828 #endif
829 
830 // Defines some utility macros.
831 
832 // The GNU compiler emits a warning if nested "if" statements are followed by
833 // an "else" statement and braces are not used to explicitly disambiguate the
834 // "else" binding. This leads to problems with code like:
835 //
836 // if (gate)
837 // ASSERT_*(condition) << "Some message";
838 //
839 // The "switch (0) case 0:" idiom is used to suppress this.
840 #ifdef __INTEL_COMPILER
841 # define GTEST_AMBIGUOUS_ELSE_BLOCKER_
842 #else
843 # define GTEST_AMBIGUOUS_ELSE_BLOCKER_ switch (0) case 0: default: // NOLINT
844 #endif
845 
846 // Use this annotation at the end of a struct/class definition to
847 // prevent the compiler from optimizing away instances that are never
848 // used. This is useful when all interesting logic happens inside the
849 // c'tor and / or d'tor. Example:
850 //
851 // struct Foo {
852 // Foo() { ... }
853 // } GTEST_ATTRIBUTE_UNUSED_;
854 //
855 // Also use it after a variable or parameter declaration to tell the
856 // compiler the variable/parameter does not have to be used.
857 #if defined(__GNUC__) && !defined(COMPILER_ICC)
858 # define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused))
859 #elif defined(__clang__)
860 # if __has_attribute(unused)
861 # define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused))
862 # endif
863 #endif
864 #ifndef GTEST_ATTRIBUTE_UNUSED_
865 # define GTEST_ATTRIBUTE_UNUSED_
866 #endif
867 
868 // A macro to disallow operator=
869 // This should be used in the private: declarations for a class.
870 #define GTEST_DISALLOW_ASSIGN_(type)\
871  void operator=(type const &)
872 
873 // A macro to disallow copy constructor and operator=
874 // This should be used in the private: declarations for a class.
875 #define GTEST_DISALLOW_COPY_AND_ASSIGN_(type)\
876  type(type const &);\
877  GTEST_DISALLOW_ASSIGN_(type)
878 
879 // Tell the compiler to warn about unused return values for functions declared
880 // with this macro. The macro should be used on function declarations
881 // following the argument list:
882 //
883 // Sprocket* AllocateSprocket() GTEST_MUST_USE_RESULT_;
884 #if defined(__GNUC__) && (GTEST_GCC_VER_ >= 30400) && !defined(COMPILER_ICC)
885 # define GTEST_MUST_USE_RESULT_ __attribute__ ((warn_unused_result))
886 #else
887 # define GTEST_MUST_USE_RESULT_
888 #endif // __GNUC__ && (GTEST_GCC_VER_ >= 30400) && !COMPILER_ICC
889 
890 // MS C++ compiler emits warning when a conditional expression is compile time
891 // constant. In some contexts this warning is false positive and needs to be
892 // suppressed. Use the following two macros in such cases:
893 //
894 // GTEST_INTENTIONAL_CONST_COND_PUSH_()
895 // while (true) {
896 // GTEST_INTENTIONAL_CONST_COND_POP_()
897 // }
898 # define GTEST_INTENTIONAL_CONST_COND_PUSH_() \
899  GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127)
900 # define GTEST_INTENTIONAL_CONST_COND_POP_() \
901  GTEST_DISABLE_MSC_WARNINGS_POP_()
902 
903 // Determine whether the compiler supports Microsoft's Structured Exception
904 // Handling. This is supported by several Windows compilers but generally
905 // does not exist on any other system.
906 #ifndef GTEST_HAS_SEH
907 // The user didn't tell us, so we need to figure it out.
908 
909 # if defined(_MSC_VER) || defined(__BORLANDC__)
910 // These two compilers are known to support SEH.
911 # define GTEST_HAS_SEH 1
912 # else
913 // Assume no SEH.
914 # define GTEST_HAS_SEH 0
915 # endif
916 
917 #define GTEST_IS_THREADSAFE \
918  (GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ \
919  || (GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT) \
920  || GTEST_HAS_PTHREAD)
921 
922 #endif // GTEST_HAS_SEH
923 
924 #ifdef _MSC_VER
925 # if GTEST_LINKED_AS_SHARED_LIBRARY
926 # define GTEST_API_ __declspec(dllimport)
927 # elif GTEST_CREATE_SHARED_LIBRARY
928 # define GTEST_API_ __declspec(dllexport)
929 # endif
930 #elif __GNUC__ >= 4 || defined(__clang__)
931 # define GTEST_API_ __attribute__((visibility ("default")))
932 #endif // _MSC_VER
933 
934 #ifndef GTEST_API_
935 # define GTEST_API_
936 #endif
937 
938 #ifdef __GNUC__
939 // Ask the compiler to never inline a given function.
940 # define GTEST_NO_INLINE_ __attribute__((noinline))
941 #else
942 # define GTEST_NO_INLINE_
943 #endif
944 
945 // _LIBCPP_VERSION is defined by the libc++ library from the LLVM project.
946 #if defined(__GLIBCXX__) || defined(_LIBCPP_VERSION)
947 # define GTEST_HAS_CXXABI_H_ 1
948 #else
949 # define GTEST_HAS_CXXABI_H_ 0
950 #endif
951 
952 // A function level attribute to disable checking for use of uninitialized
953 // memory when built with MemorySanitizer.
954 #if defined(__clang__)
955 # if __has_feature(memory_sanitizer)
956 # define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ \
957  __attribute__((no_sanitize_memory))
958 # else
959 # define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
960 # endif // __has_feature(memory_sanitizer)
961 #else
962 # define GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_
963 #endif // __clang__
964 
965 // A function level attribute to disable AddressSanitizer instrumentation.
966 #if defined(__clang__)
967 # if __has_feature(address_sanitizer)
968 # define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_ \
969  __attribute__((no_sanitize_address))
970 # else
971 # define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
972 # endif // __has_feature(address_sanitizer)
973 #else
974 # define GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
975 #endif // __clang__
976 
977 // A function level attribute to disable ThreadSanitizer instrumentation.
978 #if defined(__clang__)
979 # if __has_feature(thread_sanitizer)
980 # define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ \
981  __attribute__((no_sanitize_thread))
982 # else
983 # define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
984 # endif // __has_feature(thread_sanitizer)
985 #else
986 # define GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_
987 #endif // __clang__
988 
989 namespace testing {
990 
991 class Message;
992 
993 #if defined(GTEST_TUPLE_NAMESPACE_)
994 // Import tuple and friends into the ::testing namespace.
995 // It is part of our interface, having them in ::testing allows us to change
996 // their types as needed.
999 using GTEST_TUPLE_NAMESPACE_::tuple;
1000 using GTEST_TUPLE_NAMESPACE_::tuple_size;
1001 using GTEST_TUPLE_NAMESPACE_::tuple_element;
1002 #endif // defined(GTEST_TUPLE_NAMESPACE_)
1003 
1004 namespace internal {
1005 
1006 // A secret type that Google Test users don't know about. It has no
1007 // definition on purpose. Therefore it's impossible to create a
1008 // Secret object, which is what we want.
1009 class Secret;
1010 
1011 // The GTEST_COMPILE_ASSERT_ macro can be used to verify that a compile time
1012 // expression is true. For example, you could use it to verify the
1013 // size of a static array:
1014 //
1015 // GTEST_COMPILE_ASSERT_(GTEST_ARRAY_SIZE_(names) == NUM_NAMES,
1016 // names_incorrect_size);
1017 //
1018 // or to make sure a struct is smaller than a certain size:
1019 //
1020 // GTEST_COMPILE_ASSERT_(sizeof(foo) < 128, foo_too_large);
1021 //
1022 // The second argument to the macro is the name of the variable. If
1023 // the expression is false, most compilers will issue a warning/error
1024 // containing the name of the variable.
1025 
1026 #if GTEST_LANG_CXX11
1027 # define GTEST_COMPILE_ASSERT_(expr, msg) static_assert(expr, #msg)
1028 #else // !GTEST_LANG_CXX11
1029 template <bool>
1030  struct CompileAssert {
1031 };
1032 
1033 # define GTEST_COMPILE_ASSERT_(expr, msg) \
1034  typedef ::testing::internal::CompileAssert<(static_cast<bool>(expr))> \
1035  msg[static_cast<bool>(expr) ? 1 : -1] GTEST_ATTRIBUTE_UNUSED_
1036 #endif // !GTEST_LANG_CXX11
1037 
1038 // Implementation details of GTEST_COMPILE_ASSERT_:
1039 //
1040 // (In C++11, we simply use static_assert instead of the following)
1041 //
1042 // - GTEST_COMPILE_ASSERT_ works by defining an array type that has -1
1043 // elements (and thus is invalid) when the expression is false.
1044 //
1045 // - The simpler definition
1046 //
1047 // #define GTEST_COMPILE_ASSERT_(expr, msg) typedef char msg[(expr) ? 1 : -1]
1048 //
1049 // does not work, as gcc supports variable-length arrays whose sizes
1050 // are determined at run-time (this is gcc's extension and not part
1051 // of the C++ standard). As a result, gcc fails to reject the
1052 // following code with the simple definition:
1053 //
1054 // int foo;
1055 // GTEST_COMPILE_ASSERT_(foo, msg); // not supposed to compile as foo is
1056 // // not a compile-time constant.
1057 //
1058 // - By using the type CompileAssert<(bool(expr))>, we ensures that
1059 // expr is a compile-time constant. (Template arguments must be
1060 // determined at compile-time.)
1061 //
1062 // - The outter parentheses in CompileAssert<(bool(expr))> are necessary
1063 // to work around a bug in gcc 3.4.4 and 4.0.1. If we had written
1064 //
1065 // CompileAssert<bool(expr)>
1066 //
1067 // instead, these compilers will refuse to compile
1068 //
1069 // GTEST_COMPILE_ASSERT_(5 > 0, some_message);
1070 //
1071 // (They seem to think the ">" in "5 > 0" marks the end of the
1072 // template argument list.)
1073 //
1074 // - The array size is (bool(expr) ? 1 : -1), instead of simply
1075 //
1076 // ((expr) ? 1 : -1).
1077 //
1078 // This is to avoid running into a bug in MS VC 7.1, which
1079 // causes ((0.0) ? 1 : -1) to incorrectly evaluate to 1.
1080 
1081 // StaticAssertTypeEqHelper is used by StaticAssertTypeEq defined in gtest.h.
1082 //
1083 // This template is declared, but intentionally undefined.
1084 template <typename T1, typename T2>
1085 struct StaticAssertTypeEqHelper;
1086 
1087 template <typename T>
1088 struct StaticAssertTypeEqHelper<T, T> {
1089  enum { value = true };
1090 };
1091 
1092 // Evaluates to the number of elements in 'array'.
1093 #define GTEST_ARRAY_SIZE_(array) (sizeof(array) / sizeof(array[0]))
1094 
1095 #if GTEST_HAS_GLOBAL_STRING
1097 #else
1099 #endif // GTEST_HAS_GLOBAL_STRING
1100 
1101 #if GTEST_HAS_GLOBAL_WSTRING
1103 #elif GTEST_HAS_STD_WSTRING
1105 #endif // GTEST_HAS_GLOBAL_WSTRING
1106 
1107 // A helper for suppressing warnings on constant condition. It just
1108 // returns 'condition'.
1109 GTEST_API_ bool IsTrue(bool condition);
1110 
1111 // Defines scoped_ptr.
1112 
1113 // This implementation of scoped_ptr is PARTIAL - it only contains
1114 // enough stuff to satisfy Google Test's need.
1115 template <typename T>
1116 class scoped_ptr {
1117  public:
1118  typedef T element_type;
1119 
1120  explicit scoped_ptr(T* p = NULL) : ptr_(p) {}
1122 
1123  T& operator*() const { return *ptr_; }
1124  T* operator->() const { return ptr_; }
1125  T* get() const { return ptr_; }
1126 
1127  T* release() {
1128  T* const ptr = ptr_;
1129  ptr_ = NULL;
1130  return ptr;
1131  }
1132 
1133  void reset(T* p = NULL) {
1134  if (p != ptr_) {
1135  if (IsTrue(sizeof(T) > 0)) { // Makes sure T is a complete type.
1136  delete ptr_;
1137  }
1138  ptr_ = p;
1139  }
1140  }
1141 
1142  friend void swap(scoped_ptr& a, scoped_ptr& b) {
1143  using std::swap;
1144  swap(a.ptr_, b.ptr_);
1145  }
1146 
1147  private:
1148  T* ptr_;
1149 
1150  GTEST_DISALLOW_COPY_AND_ASSIGN_(scoped_ptr);
1151 };
1152 
1153 // Defines RE.
1154 
1155 // A simple C++ wrapper for <regex.h>. It uses the POSIX Extended
1156 // Regular Expression syntax.
1157 class GTEST_API_ RE {
1158  public:
1159  // A copy constructor is required by the Standard to initialize object
1160  // references from r-values.
1161  RE(const RE& other) { Init(other.pattern()); }
1162 
1163  // Constructs an RE from a string.
1164  RE(const ::std::string& regex) { Init(regex.c_str()); } // NOLINT
1165 
1166 #if GTEST_HAS_GLOBAL_STRING
1167 
1168  RE(const ::string& regex) { Init(regex.c_str()); } // NOLINT
1169 
1170 #endif // GTEST_HAS_GLOBAL_STRING
1171 
1172  RE(const char* regex) { Init(regex); } // NOLINT
1173  ~RE();
1174 
1175  // Returns the string representation of the regex.
1176  const char* pattern() const { return pattern_; }
1177 
1178  // FullMatch(str, re) returns true iff regular expression re matches
1179  // the entire str.
1180  // PartialMatch(str, re) returns true iff regular expression re
1181  // matches a substring of str (including str itself).
1182  //
1183  // TODO(wan@google.com): make FullMatch() and PartialMatch() work
1184  // when str contains NUL characters.
1185  static bool FullMatch(const ::std::string& str, const RE& re) {
1186  return FullMatch(str.c_str(), re);
1187  }
1188  static bool PartialMatch(const ::std::string& str, const RE& re) {
1189  return PartialMatch(str.c_str(), re);
1190  }
1191 
1192 #if GTEST_HAS_GLOBAL_STRING
1193 
1194  static bool FullMatch(const ::string& str, const RE& re) {
1195  return FullMatch(str.c_str(), re);
1196  }
1197  static bool PartialMatch(const ::string& str, const RE& re) {
1198  return PartialMatch(str.c_str(), re);
1199  }
1200 
1201 #endif // GTEST_HAS_GLOBAL_STRING
1202 
1203  static bool FullMatch(const char* str, const RE& re);
1204  static bool PartialMatch(const char* str, const RE& re);
1205 
1206  private:
1207  void Init(const char* regex);
1208 
1209  // We use a const char* instead of an std::string, as Google Test used to be
1210  // used where std::string is not available. TODO(wan@google.com): change to
1211  // std::string.
1212  const char* pattern_;
1213  bool is_valid_;
1214 
1215 #if GTEST_USES_POSIX_RE
1216 
1217  regex_t full_regex_; // For FullMatch().
1218  regex_t partial_regex_; // For PartialMatch().
1219 
1220 #else // GTEST_USES_SIMPLE_RE
1221 
1222  const char* full_pattern_; // For FullMatch();
1223 
1224 #endif
1225 
1227 };
1228 
1229 // Formats a source file path and a line number as they would appear
1230 // in an error message from the compiler used to compile this code.
1231 GTEST_API_ ::std::string FormatFileLocation(const char* file, int line);
1232 
1233 // Formats a file location for compiler-independent XML output.
1234 // Although this function is not platform dependent, we put it next to
1235 // FormatFileLocation in order to contrast the two functions.
1237  int line);
1238 
1239 // Defines logging utilities:
1240 // GTEST_LOG_(severity) - logs messages at the specified severity level. The
1241 // message itself is streamed into the macro.
1242 // LogToStderr() - directs all log messages to stderr.
1243 // FlushInfoLog() - flushes informational log messages.
1244 
1246  GTEST_INFO,
1247  GTEST_WARNING,
1248  GTEST_ERROR,
1249  GTEST_FATAL
1250 };
1251 
1252 // Formats log entry severity, provides a stream object for streaming the
1253 // log message, and terminates the message with a newline when going out of
1254 // scope.
1255 class GTEST_API_ GTestLog {
1256  public:
1257  GTestLog(GTestLogSeverity severity, const char* file, int line);
1258 
1259  // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
1260  ~GTestLog();
1261 
1262  ::std::ostream& GetStream() { return ::std::cerr; }
1263 
1264  private:
1265  const GTestLogSeverity severity_;
1266 
1268 };
1269 
1270 #if !defined(GTEST_LOG_)
1271 
1272 # define GTEST_LOG_(severity) \
1273  ::testing::internal::GTestLog(::testing::internal::GTEST_##severity, \
1274  __FILE__, __LINE__).GetStream()
1275 
1276 inline void LogToStderr() {}
1277 inline void FlushInfoLog() { fflush(NULL); }
1278 
1279 #endif // !defined(GTEST_LOG_)
1280 
1281 #if !defined(GTEST_CHECK_)
1282 // INTERNAL IMPLEMENTATION - DO NOT USE.
1283 //
1284 // GTEST_CHECK_ is an all-mode assert. It aborts the program if the condition
1285 // is not satisfied.
1286 // Synopsys:
1287 // GTEST_CHECK_(boolean_condition);
1288 // or
1289 // GTEST_CHECK_(boolean_condition) << "Additional message";
1290 //
1291 // This checks the condition and if the condition is not satisfied
1292 // it prints message about the condition violation, including the
1293 // condition itself, plus additional message streamed into it, if any,
1294 // and then it aborts the program. It aborts the program irrespective of
1295 // whether it is built in the debug mode or not.
1296 # define GTEST_CHECK_(condition) \
1297  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
1298  if (::testing::internal::IsTrue(condition)) \
1299  ; \
1300  else \
1301  GTEST_LOG_(FATAL) << "Condition " #condition " failed. "
1302 #endif // !defined(GTEST_CHECK_)
1303 
1304 // An all-mode assert to verify that the given POSIX-style function
1305 // call returns 0 (indicating success). Known limitation: this
1306 // doesn't expand to a balanced 'if' statement, so enclose the macro
1307 // in {} if you need to use it as the only statement in an 'if'
1308 // branch.
1309 #define GTEST_CHECK_POSIX_SUCCESS_(posix_call) \
1310  if (const int gtest_error = (posix_call)) \
1311  GTEST_LOG_(FATAL) << #posix_call << "failed with error " \
1312  << gtest_error
1313 
1314 #if GTEST_HAS_STD_MOVE_
1315 using std::move;
1316 #else // GTEST_HAS_STD_MOVE_
1317 template <typename T>
1318 const T& move(const T& t) {
1319  return t;
1320 }
1321 #endif // GTEST_HAS_STD_MOVE_
1322 
1323 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
1324 //
1325 // Use ImplicitCast_ as a safe version of static_cast for upcasting in
1326 // the type hierarchy (e.g. casting a Foo* to a SuperclassOfFoo* or a
1327 // const Foo*). When you use ImplicitCast_, the compiler checks that
1328 // the cast is safe. Such explicit ImplicitCast_s are necessary in
1329 // surprisingly many situations where C++ demands an exact type match
1330 // instead of an argument type convertable to a target type.
1331 //
1332 // The syntax for using ImplicitCast_ is the same as for static_cast:
1333 //
1334 // ImplicitCast_<ToType>(expr)
1335 //
1336 // ImplicitCast_ would have been part of the C++ standard library,
1337 // but the proposal was submitted too late. It will probably make
1338 // its way into the language in the future.
1339 //
1340 // This relatively ugly name is intentional. It prevents clashes with
1341 // similar functions users may have (e.g., implicit_cast). The internal
1342 // namespace alone is not enough because the function can be found by ADL.
1343 template<typename To>
1344 inline To ImplicitCast_(To x) { return x; }
1345 
1346 // When you upcast (that is, cast a pointer from type Foo to type
1347 // SuperclassOfFoo), it's fine to use ImplicitCast_<>, since upcasts
1348 // always succeed. When you downcast (that is, cast a pointer from
1349 // type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
1350 // how do you know the pointer is really of type SubclassOfFoo? It
1351 // could be a bare Foo, or of type DifferentSubclassOfFoo. Thus,
1352 // when you downcast, you should use this macro. In debug mode, we
1353 // use dynamic_cast<> to double-check the downcast is legal (we die
1354 // if it's not). In normal mode, we do the efficient static_cast<>
1355 // instead. Thus, it's important to test in debug mode to make sure
1356 // the cast is legal!
1357 // This is the only place in the code we should use dynamic_cast<>.
1358 // In particular, you SHOULDN'T be using dynamic_cast<> in order to
1359 // do RTTI (eg code like this:
1360 // if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
1361 // if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
1362 // You should design the code some other way not to need this.
1363 //
1364 // This relatively ugly name is intentional. It prevents clashes with
1365 // similar functions users may have (e.g., down_cast). The internal
1366 // namespace alone is not enough because the function can be found by ADL.
1367 template<typename To, typename From> // use like this: DownCast_<T*>(foo);
1368 inline To DownCast_(From* f) { // so we only accept pointers
1369  // Ensures that To is a sub-type of From *. This test is here only
1370  // for compile-time type checking, and has no overhead in an
1371  // optimized build at run-time, as it will be optimized away
1372  // completely.
1374  if (false) {
1376  const To to = NULL;
1377  ::testing::internal::ImplicitCast_<From*>(to);
1378  }
1379 
1380 #if GTEST_HAS_RTTI
1381  // RTTI: debug mode only!
1382  GTEST_CHECK_(f == NULL || dynamic_cast<To>(f) != NULL);
1383 #endif
1384  return static_cast<To>(f);
1385 }
1386 
1387 // Downcasts the pointer of type Base to Derived.
1388 // Derived must be a subclass of Base. The parameter MUST
1389 // point to a class of type Derived, not any subclass of it.
1390 // When RTTI is available, the function performs a runtime
1391 // check to enforce this.
1392 template <class Derived, class Base>
1393 Derived* CheckedDowncastToActualType(Base* base) {
1394 #if GTEST_HAS_RTTI
1395  GTEST_CHECK_(typeid(*base) == typeid(Derived));
1396 #endif
1397 
1398 #if GTEST_HAS_DOWNCAST_
1399  return ::down_cast<Derived*>(base);
1400 #elif GTEST_HAS_RTTI
1401  return dynamic_cast<Derived*>(base); // NOLINT
1402 #else
1403  return static_cast<Derived*>(base); // Poor man's downcast.
1404 #endif
1405 }
1406 
1407 #if GTEST_HAS_STREAM_REDIRECTION
1408 
1409 // Defines the stderr capturer:
1410 // CaptureStdout - starts capturing stdout.
1411 // GetCapturedStdout - stops capturing stdout and returns the captured string.
1412 // CaptureStderr - starts capturing stderr.
1413 // GetCapturedStderr - stops capturing stderr and returns the captured string.
1414 //
1415 GTEST_API_ void CaptureStdout();
1417 GTEST_API_ void CaptureStderr();
1419 
1420 #endif // GTEST_HAS_STREAM_REDIRECTION
1421 
1422 // Returns a path to temporary directory.
1424 
1425 // Returns the size (in bytes) of a file.
1426 GTEST_API_ size_t GetFileSize(FILE* file);
1427 
1428 // Reads the entire content of a file as a string.
1430 
1431 // All command line arguments.
1432 GTEST_API_ const ::std::vector<testing::internal::string>& GetArgvs();
1433 
1434 #if GTEST_HAS_DEATH_TEST
1435 
1436 const ::std::vector<testing::internal::string>& GetInjectableArgvs();
1437 void SetInjectableArgvs(const ::std::vector<testing::internal::string>*
1438  new_argvs);
1439 
1440 
1441 #endif // GTEST_HAS_DEATH_TEST
1442 
1443 // Defines synchronization primitives.
1444 #if GTEST_IS_THREADSAFE
1445 # if GTEST_HAS_PTHREAD
1446 // Sleeps for (roughly) n milliseconds. This function is only for testing
1447 // Google Test's own constructs. Don't use it in user tests, either
1448 // directly or indirectly.
1449 inline void SleepMilliseconds(int n) {
1450  const timespec time = {
1451  0, // 0 seconds.
1452  n * 1000L * 1000L, // And n ms.
1453  };
1454  nanosleep(&time, NULL);
1455 }
1456 # endif // GTEST_HAS_PTHREAD
1457 
1458 # if GTEST_HAS_NOTIFICATION_
1459 // Notification has already been imported into the namespace.
1460 // Nothing to do here.
1461 
1462 # elif GTEST_HAS_PTHREAD
1463 // Allows a controller thread to pause execution of newly created
1464 // threads until notified. Instances of this class must be created
1465 // and destroyed in the controller thread.
1466 //
1467 // This class is only for testing Google Test's own constructs. Do not
1468 // use it in user tests, either directly or indirectly.
1469 class Notification {
1470  public:
1471  Notification() : notified_(false) {
1472  GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL));
1473  }
1474  ~Notification() {
1475  pthread_mutex_destroy(&mutex_);
1476  }
1477 
1478  // Notifies all threads created with this notification to start. Must
1479  // be called from the controller thread.
1480  void Notify() {
1481  pthread_mutex_lock(&mutex_);
1482  notified_ = true;
1483  pthread_mutex_unlock(&mutex_);
1484  }
1485 
1486  // Blocks until the controller thread notifies. Must be called from a test
1487  // thread.
1488  void WaitForNotification() {
1489  for (;;) {
1490  pthread_mutex_lock(&mutex_);
1491  const bool notified = notified_;
1492  pthread_mutex_unlock(&mutex_);
1493  if (notified)
1494  break;
1495  SleepMilliseconds(10);
1496  }
1497  }
1498 
1499  private:
1500  pthread_mutex_t mutex_;
1501  bool notified_;
1502 
1503  GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification);
1504 };
1505 
1506 # elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
1507 
1508 GTEST_API_ void SleepMilliseconds(int n);
1509 
1510 // Provides leak-safe Windows kernel handle ownership.
1511 // Used in death tests and in threading support.
1512 class GTEST_API_ AutoHandle {
1513  public:
1514  // Assume that Win32 HANDLE type is equivalent to void*. Doing so allows us to
1515  // avoid including <windows.h> in this header file. Including <windows.h> is
1516  // undesirable because it defines a lot of symbols and macros that tend to
1517  // conflict with client code. This assumption is verified by
1518  // WindowsTypesTest.HANDLEIsVoidStar.
1519  typedef void* Handle;
1520  AutoHandle();
1521  explicit AutoHandle(Handle handle);
1522 
1523  ~AutoHandle();
1524 
1525  Handle Get() const;
1526  void Reset();
1527  void Reset(Handle handle);
1528 
1529  private:
1530  // Returns true iff the handle is a valid handle object that can be closed.
1531  bool IsCloseable() const;
1532 
1533  Handle handle_;
1534 
1535  GTEST_DISALLOW_COPY_AND_ASSIGN_(AutoHandle);
1536 };
1537 
1538 // Allows a controller thread to pause execution of newly created
1539 // threads until notified. Instances of this class must be created
1540 // and destroyed in the controller thread.
1541 //
1542 // This class is only for testing Google Test's own constructs. Do not
1543 // use it in user tests, either directly or indirectly.
1544 class GTEST_API_ Notification {
1545  public:
1546  Notification();
1547  void Notify();
1548  void WaitForNotification();
1549 
1550  private:
1551  AutoHandle event_;
1552 
1553  GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification);
1554 };
1555 # endif // GTEST_HAS_NOTIFICATION_
1556 
1557 # if GTEST_HAS_PTHREAD
1558 
1559 // As a C-function, ThreadFuncWithCLinkage cannot be templated itself.
1560 // Consequently, it cannot select a correct instantiation of ThreadWithParam
1561 // in order to call its Run(). Introducing ThreadWithParamBase as a
1562 // non-templated base class for ThreadWithParam allows us to bypass this
1563 // problem.
1564 class ThreadWithParamBase {
1565  public:
1566  virtual ~ThreadWithParamBase() {}
1567  virtual void Run() = 0;
1568 };
1569 
1570 // pthread_create() accepts a pointer to a function type with the C linkage.
1571 // According to the Standard (7.5/1), function types with different linkages
1572 // are different even if they are otherwise identical. Some compilers (for
1573 // example, SunStudio) treat them as different types. Since class methods
1574 // cannot be defined with C-linkage we need to define a free C-function to
1575 // pass into pthread_create().
1576 extern "C" inline void* ThreadFuncWithCLinkage(void* thread) {
1577  static_cast<ThreadWithParamBase*>(thread)->Run();
1578  return NULL;
1579 }
1580 
1581 // Helper class for testing Google Test's multi-threading constructs.
1582 // To use it, write:
1583 //
1584 // void ThreadFunc(int param) { /* Do things with param */ }
1585 // Notification thread_can_start;
1586 // ...
1587 // // The thread_can_start parameter is optional; you can supply NULL.
1588 // ThreadWithParam<int> thread(&ThreadFunc, 5, &thread_can_start);
1589 // thread_can_start.Notify();
1590 //
1591 // These classes are only for testing Google Test's own constructs. Do
1592 // not use them in user tests, either directly or indirectly.
1593 template <typename T>
1594 class ThreadWithParam : public ThreadWithParamBase {
1595  public:
1596  typedef void UserThreadFunc(T);
1597 
1598  ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start)
1599  : func_(func),
1600  param_(param),
1601  thread_can_start_(thread_can_start),
1602  finished_(false) {
1603  ThreadWithParamBase* const base = this;
1604  // The thread can be created only after all fields except thread_
1605  // have been initialized.
1607  pthread_create(&thread_, 0, &ThreadFuncWithCLinkage, base));
1608  }
1609  ~ThreadWithParam() { Join(); }
1610 
1611  void Join() {
1612  if (!finished_) {
1613  GTEST_CHECK_POSIX_SUCCESS_(pthread_join(thread_, 0));
1614  finished_ = true;
1615  }
1616  }
1617 
1618  virtual void Run() {
1619  if (thread_can_start_ != NULL)
1620  thread_can_start_->WaitForNotification();
1621  func_(param_);
1622  }
1623 
1624  private:
1625  UserThreadFunc* const func_; // User-supplied thread function.
1626  const T param_; // User-supplied parameter to the thread function.
1627  // When non-NULL, used to block execution until the controller thread
1628  // notifies.
1629  Notification* const thread_can_start_;
1630  bool finished_; // true iff we know that the thread function has finished.
1631  pthread_t thread_; // The native thread object.
1632 
1633  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam);
1634 };
1635 # endif // !GTEST_OS_WINDOWS && GTEST_HAS_PTHREAD ||
1636  // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
1637 
1638 # if GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
1639 // Mutex and ThreadLocal have already been imported into the namespace.
1640 // Nothing to do here.
1641 
1642 # elif GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
1643 
1644 // Mutex implements mutex on Windows platforms. It is used in conjunction
1645 // with class MutexLock:
1646 //
1647 // Mutex mutex;
1648 // ...
1649 // MutexLock lock(&mutex); // Acquires the mutex and releases it at the
1650 // // end of the current scope.
1651 //
1652 // A static Mutex *must* be defined or declared using one of the following
1653 // macros:
1654 // GTEST_DEFINE_STATIC_MUTEX_(g_some_mutex);
1655 // GTEST_DECLARE_STATIC_MUTEX_(g_some_mutex);
1656 //
1657 // (A non-static Mutex is defined/declared in the usual way).
1658 class GTEST_API_ Mutex {
1659  public:
1660  enum MutexType { kStatic = 0, kDynamic = 1 };
1661  // We rely on kStaticMutex being 0 as it is to what the linker initializes
1662  // type_ in static mutexes. critical_section_ will be initialized lazily
1663  // in ThreadSafeLazyInit().
1664  enum StaticConstructorSelector { kStaticMutex = 0 };
1665 
1666  // This constructor intentionally does nothing. It relies on type_ being
1667  // statically initialized to 0 (effectively setting it to kStatic) and on
1668  // ThreadSafeLazyInit() to lazily initialize the rest of the members.
1669  explicit Mutex(StaticConstructorSelector /*dummy*/) {}
1670 
1671  Mutex();
1672  ~Mutex();
1673 
1674  void Lock();
1675 
1676  void Unlock();
1677 
1678  // Does nothing if the current thread holds the mutex. Otherwise, crashes
1679  // with high probability.
1680  void AssertHeld();
1681 
1682  private:
1683  // Initializes owner_thread_id_ and critical_section_ in static mutexes.
1684  void ThreadSafeLazyInit();
1685 
1686  // Per http://blogs.msdn.com/b/oldnewthing/archive/2004/02/23/78395.aspx,
1687  // we assume that 0 is an invalid value for thread IDs.
1688  unsigned int owner_thread_id_;
1689 
1690  // For static mutexes, we rely on these members being initialized to zeros
1691  // by the linker.
1692  MutexType type_;
1693  long critical_section_init_phase_; // NOLINT
1694  _RTL_CRITICAL_SECTION* critical_section_;
1695 
1697 };
1698 
1699 # define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
1700  extern ::testing::internal::Mutex mutex
1701 
1702 # define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
1703  ::testing::internal::Mutex mutex(::testing::internal::Mutex::kStaticMutex)
1704 
1705 // We cannot name this class MutexLock because the ctor declaration would
1706 // conflict with a macro named MutexLock, which is defined on some
1707 // platforms. That macro is used as a defensive measure to prevent against
1708 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
1709 // "MutexLock l(&mu)". Hence the typedef trick below.
1710 class GTestMutexLock {
1711  public:
1712  explicit GTestMutexLock(Mutex* mutex)
1713  : mutex_(mutex) { mutex_->Lock(); }
1714 
1715  ~GTestMutexLock() { mutex_->Unlock(); }
1716 
1717  private:
1718  Mutex* const mutex_;
1719 
1721 };
1722 
1723 typedef GTestMutexLock MutexLock;
1724 
1725 // Base class for ValueHolder<T>. Allows a caller to hold and delete a value
1726 // without knowing its type.
1727 class ThreadLocalValueHolderBase {
1728  public:
1729  virtual ~ThreadLocalValueHolderBase() {}
1730 };
1731 
1732 // Provides a way for a thread to send notifications to a ThreadLocal
1733 // regardless of its parameter type.
1734 class ThreadLocalBase {
1735  public:
1736  // Creates a new ValueHolder<T> object holding a default value passed to
1737  // this ThreadLocal<T>'s constructor and returns it. It is the caller's
1738  // responsibility not to call this when the ThreadLocal<T> instance already
1739  // has a value on the current thread.
1740  virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const = 0;
1741 
1742  protected:
1743  ThreadLocalBase() {}
1744  virtual ~ThreadLocalBase() {}
1745 
1746  private:
1747  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocalBase);
1748 };
1749 
1750 // Maps a thread to a set of ThreadLocals that have values instantiated on that
1751 // thread and notifies them when the thread exits. A ThreadLocal instance is
1752 // expected to persist until all threads it has values on have terminated.
1753 class GTEST_API_ ThreadLocalRegistry {
1754  public:
1755  // Registers thread_local_instance as having value on the current thread.
1756  // Returns a value that can be used to identify the thread from other threads.
1757  static ThreadLocalValueHolderBase* GetValueOnCurrentThread(
1758  const ThreadLocalBase* thread_local_instance);
1759 
1760  // Invoked when a ThreadLocal instance is destroyed.
1761  static void OnThreadLocalDestroyed(
1762  const ThreadLocalBase* thread_local_instance);
1763 };
1764 
1765 class GTEST_API_ ThreadWithParamBase {
1766  public:
1767  void Join();
1768 
1769  protected:
1770  class Runnable {
1771  public:
1772  virtual ~Runnable() {}
1773  virtual void Run() = 0;
1774  };
1775 
1776  ThreadWithParamBase(Runnable *runnable, Notification* thread_can_start);
1777  virtual ~ThreadWithParamBase();
1778 
1779  private:
1780  AutoHandle thread_;
1781 };
1782 
1783 // Helper class for testing Google Test's multi-threading constructs.
1784 template <typename T>
1785 class ThreadWithParam : public ThreadWithParamBase {
1786  public:
1787  typedef void UserThreadFunc(T);
1788 
1789  ThreadWithParam(UserThreadFunc* func, T param, Notification* thread_can_start)
1790  : ThreadWithParamBase(new RunnableImpl(func, param), thread_can_start) {
1791  }
1792  virtual ~ThreadWithParam() {}
1793 
1794  private:
1795  class RunnableImpl : public Runnable {
1796  public:
1797  RunnableImpl(UserThreadFunc* func, T param)
1798  : func_(func),
1799  param_(param) {
1800  }
1801  virtual ~RunnableImpl() {}
1802  virtual void Run() {
1803  func_(param_);
1804  }
1805 
1806  private:
1807  UserThreadFunc* const func_;
1808  const T param_;
1809 
1810  GTEST_DISALLOW_COPY_AND_ASSIGN_(RunnableImpl);
1811  };
1812 
1813  GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam);
1814 };
1815 
1816 // Implements thread-local storage on Windows systems.
1817 //
1818 // // Thread 1
1819 // ThreadLocal<int> tl(100); // 100 is the default value for each thread.
1820 //
1821 // // Thread 2
1822 // tl.set(150); // Changes the value for thread 2 only.
1823 // EXPECT_EQ(150, tl.get());
1824 //
1825 // // Thread 1
1826 // EXPECT_EQ(100, tl.get()); // In thread 1, tl has the original value.
1827 // tl.set(200);
1828 // EXPECT_EQ(200, tl.get());
1829 //
1830 // The template type argument T must have a public copy constructor.
1831 // In addition, the default ThreadLocal constructor requires T to have
1832 // a public default constructor.
1833 //
1834 // The users of a TheadLocal instance have to make sure that all but one
1835 // threads (including the main one) using that instance have exited before
1836 // destroying it. Otherwise, the per-thread objects managed for them by the
1837 // ThreadLocal instance are not guaranteed to be destroyed on all platforms.
1838 //
1839 // Google Test only uses global ThreadLocal objects. That means they
1840 // will die after main() has returned. Therefore, no per-thread
1841 // object managed by Google Test will be leaked as long as all threads
1842 // using Google Test have exited when main() returns.
1843 template <typename T>
1844 class ThreadLocal : public ThreadLocalBase {
1845  public:
1846  ThreadLocal() : default_factory_(new DefaultValueHolderFactory()) {}
1847  explicit ThreadLocal(const T& value)
1848  : default_factory_(new InstanceValueHolderFactory(value)) {}
1849 
1850  ~ThreadLocal() { ThreadLocalRegistry::OnThreadLocalDestroyed(this); }
1851 
1852  T* pointer() { return GetOrCreateValue(); }
1853  const T* pointer() const { return GetOrCreateValue(); }
1854  const T& get() const { return *pointer(); }
1855  void set(const T& value) { *pointer() = value; }
1856 
1857  private:
1858  // Holds a value of T. Can be deleted via its base class without the caller
1859  // knowing the type of T.
1860  class ValueHolder : public ThreadLocalValueHolderBase {
1861  public:
1862  ValueHolder() : value_() {}
1863  explicit ValueHolder(const T& value) : value_(value) {}
1864 
1865  T* pointer() { return &value_; }
1866 
1867  private:
1868  T value_;
1869  GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder);
1870  };
1871 
1872 
1873  T* GetOrCreateValue() const {
1874  return static_cast<ValueHolder*>(
1875  ThreadLocalRegistry::GetValueOnCurrentThread(this))->pointer();
1876  }
1877 
1878  virtual ThreadLocalValueHolderBase* NewValueForCurrentThread() const {
1879  return default_factory_->MakeNewHolder();
1880  }
1881 
1882  class ValueHolderFactory {
1883  public:
1884  ValueHolderFactory() {}
1885  virtual ~ValueHolderFactory() {}
1886  virtual ValueHolder* MakeNewHolder() const = 0;
1887 
1888  private:
1889  GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolderFactory);
1890  };
1891 
1892  class DefaultValueHolderFactory : public ValueHolderFactory {
1893  public:
1894  DefaultValueHolderFactory() {}
1895  virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }
1896 
1897  private:
1898  GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
1899  };
1900 
1901  class InstanceValueHolderFactory : public ValueHolderFactory {
1902  public:
1903  explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
1904  virtual ValueHolder* MakeNewHolder() const {
1905  return new ValueHolder(value_);
1906  }
1907 
1908  private:
1909  const T value_; // The value for each thread.
1910 
1911  GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory);
1912  };
1913 
1914  scoped_ptr<ValueHolderFactory> default_factory_;
1915 
1917 };
1918 
1919 # elif GTEST_HAS_PTHREAD
1920 
1921 // MutexBase and Mutex implement mutex on pthreads-based platforms.
1922 class MutexBase {
1923  public:
1924  // Acquires this mutex.
1925  void Lock() {
1926  GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&mutex_));
1927  owner_ = pthread_self();
1928  has_owner_ = true;
1929  }
1930 
1931  // Releases this mutex.
1932  void Unlock() {
1933  // Since the lock is being released the owner_ field should no longer be
1934  // considered valid. We don't protect writing to has_owner_ here, as it's
1935  // the caller's responsibility to ensure that the current thread holds the
1936  // mutex when this is called.
1937  has_owner_ = false;
1938  GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&mutex_));
1939  }
1940 
1941  // Does nothing if the current thread holds the mutex. Otherwise, crashes
1942  // with high probability.
1943  void AssertHeld() const {
1944  GTEST_CHECK_(has_owner_ && pthread_equal(owner_, pthread_self()))
1945  << "The current thread is not holding the mutex @" << this;
1946  }
1947 
1948  // A static mutex may be used before main() is entered. It may even
1949  // be used before the dynamic initialization stage. Therefore we
1950  // must be able to initialize a static mutex object at link time.
1951  // This means MutexBase has to be a POD and its member variables
1952  // have to be public.
1953  public:
1954  pthread_mutex_t mutex_; // The underlying pthread mutex.
1955  // has_owner_ indicates whether the owner_ field below contains a valid thread
1956  // ID and is therefore safe to inspect (e.g., to use in pthread_equal()). All
1957  // accesses to the owner_ field should be protected by a check of this field.
1958  // An alternative might be to memset() owner_ to all zeros, but there's no
1959  // guarantee that a zero'd pthread_t is necessarily invalid or even different
1960  // from pthread_self().
1961  bool has_owner_;
1962  pthread_t owner_; // The thread holding the mutex.
1963 };
1964 
1965 // Forward-declares a static mutex.
1966 # define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
1967  extern ::testing::internal::MutexBase mutex
1968 
1969 // Defines and statically (i.e. at link time) initializes a static mutex.
1970 # define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
1971  ::testing::internal::MutexBase mutex = { PTHREAD_MUTEX_INITIALIZER, false, pthread_t() }
1972 
1973 // The Mutex class can only be used for mutexes created at runtime. It
1974 // shares its API with MutexBase otherwise.
1975 class Mutex : public MutexBase {
1976  public:
1977  Mutex() {
1978  GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL));
1979  has_owner_ = false;
1980  }
1981  ~Mutex() {
1982  GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&mutex_));
1983  }
1984 
1985  private:
1987 };
1988 
1989 // We cannot name this class MutexLock because the ctor declaration would
1990 // conflict with a macro named MutexLock, which is defined on some
1991 // platforms. That macro is used as a defensive measure to prevent against
1992 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
1993 // "MutexLock l(&mu)". Hence the typedef trick below.
1994 class GTestMutexLock {
1995  public:
1996  explicit GTestMutexLock(MutexBase* mutex)
1997  : mutex_(mutex) { mutex_->Lock(); }
1998 
1999  ~GTestMutexLock() { mutex_->Unlock(); }
2000 
2001  private:
2002  MutexBase* const mutex_;
2003 
2005 };
2006 
2007 typedef GTestMutexLock MutexLock;
2008 
2009 // Helpers for ThreadLocal.
2010 
2011 // pthread_key_create() requires DeleteThreadLocalValue() to have
2012 // C-linkage. Therefore it cannot be templatized to access
2013 // ThreadLocal<T>. Hence the need for class
2014 // ThreadLocalValueHolderBase.
2015 class ThreadLocalValueHolderBase {
2016  public:
2017  virtual ~ThreadLocalValueHolderBase() {}
2018 };
2019 
2020 // Called by pthread to delete thread-local data stored by
2021 // pthread_setspecific().
2022 extern "C" inline void DeleteThreadLocalValue(void* value_holder) {
2023  delete static_cast<ThreadLocalValueHolderBase*>(value_holder);
2024 }
2025 
2026 // Implements thread-local storage on pthreads-based systems.
2027 template <typename T>
2028 class ThreadLocal {
2029  public:
2030  ThreadLocal()
2031  : key_(CreateKey()), default_factory_(new DefaultValueHolderFactory()) {}
2032  explicit ThreadLocal(const T& value)
2033  : key_(CreateKey()),
2034  default_factory_(new InstanceValueHolderFactory(value)) {}
2035 
2036  ~ThreadLocal() {
2037  // Destroys the managed object for the current thread, if any.
2038  DeleteThreadLocalValue(pthread_getspecific(key_));
2039 
2040  // Releases resources associated with the key. This will *not*
2041  // delete managed objects for other threads.
2042  GTEST_CHECK_POSIX_SUCCESS_(pthread_key_delete(key_));
2043  }
2044 
2045  T* pointer() { return GetOrCreateValue(); }
2046  const T* pointer() const { return GetOrCreateValue(); }
2047  const T& get() const { return *pointer(); }
2048  void set(const T& value) { *pointer() = value; }
2049 
2050  private:
2051  // Holds a value of type T.
2052  class ValueHolder : public ThreadLocalValueHolderBase {
2053  public:
2054  ValueHolder() : value_() {}
2055  explicit ValueHolder(const T& value) : value_(value) {}
2056 
2057  T* pointer() { return &value_; }
2058 
2059  private:
2060  T value_;
2061  GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder);
2062  };
2063 
2064  static pthread_key_t CreateKey() {
2065  pthread_key_t key;
2066  // When a thread exits, DeleteThreadLocalValue() will be called on
2067  // the object managed for that thread.
2069  pthread_key_create(&key, &DeleteThreadLocalValue));
2070  return key;
2071  }
2072 
2073  T* GetOrCreateValue() const {
2074  ThreadLocalValueHolderBase* const holder =
2075  static_cast<ThreadLocalValueHolderBase*>(pthread_getspecific(key_));
2076  if (holder != NULL) {
2077  return CheckedDowncastToActualType<ValueHolder>(holder)->pointer();
2078  }
2079 
2080  ValueHolder* const new_holder = default_factory_->MakeNewHolder();
2081  ThreadLocalValueHolderBase* const holder_base = new_holder;
2082  GTEST_CHECK_POSIX_SUCCESS_(pthread_setspecific(key_, holder_base));
2083  return new_holder->pointer();
2084  }
2085 
2086  class ValueHolderFactory {
2087  public:
2088  ValueHolderFactory() {}
2089  virtual ~ValueHolderFactory() {}
2090  virtual ValueHolder* MakeNewHolder() const = 0;
2091 
2092  private:
2093  GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolderFactory);
2094  };
2095 
2096  class DefaultValueHolderFactory : public ValueHolderFactory {
2097  public:
2098  DefaultValueHolderFactory() {}
2099  virtual ValueHolder* MakeNewHolder() const { return new ValueHolder(); }
2100 
2101  private:
2102  GTEST_DISALLOW_COPY_AND_ASSIGN_(DefaultValueHolderFactory);
2103  };
2104 
2105  class InstanceValueHolderFactory : public ValueHolderFactory {
2106  public:
2107  explicit InstanceValueHolderFactory(const T& value) : value_(value) {}
2108  virtual ValueHolder* MakeNewHolder() const {
2109  return new ValueHolder(value_);
2110  }
2111 
2112  private:
2113  const T value_; // The value for each thread.
2114 
2115  GTEST_DISALLOW_COPY_AND_ASSIGN_(InstanceValueHolderFactory);
2116  };
2117 
2118  // A key pthreads uses for looking up per-thread values.
2119  const pthread_key_t key_;
2120  scoped_ptr<ValueHolderFactory> default_factory_;
2121 
2123 };
2124 
2125 # endif // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
2126 
2127 #else // GTEST_IS_THREADSAFE
2128 
2129 // A dummy implementation of synchronization primitives (mutex, lock,
2130 // and thread-local variable). Necessary for compiling Google Test where
2131 // mutex is not supported - using Google Test in multiple threads is not
2132 // supported on such platforms.
2133 
2134 class Mutex {
2135  public:
2136  Mutex() {}
2137  void Lock() {}
2138  void Unlock() {}
2139  void AssertHeld() const {}
2140 };
2141 
2142 # define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
2143  extern ::testing::internal::Mutex mutex
2144 
2145 # define GTEST_DEFINE_STATIC_MUTEX_(mutex) ::testing::internal::Mutex mutex
2146 
2147 // We cannot name this class MutexLock because the ctor declaration would
2148 // conflict with a macro named MutexLock, which is defined on some
2149 // platforms. That macro is used as a defensive measure to prevent against
2150 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
2151 // "MutexLock l(&mu)". Hence the typedef trick below.
2152 class GTestMutexLock {
2153  public:
2154  explicit GTestMutexLock(Mutex*) {} // NOLINT
2155 };
2156 
2157 typedef GTestMutexLock MutexLock;
2158 
2159 template <typename T>
2160 class ThreadLocal {
2161  public:
2162  ThreadLocal() : value_() {}
2163  explicit ThreadLocal(const T& value) : value_(value) {}
2164  T* pointer() { return &value_; }
2165  const T* pointer() const { return &value_; }
2166  const T& get() const { return value_; }
2167  void set(const T& value) { value_ = value; }
2168  private:
2169  T value_;
2170 };
2171 
2172 #endif // GTEST_IS_THREADSAFE
2173 
2174 // Returns the number of threads running in the process, or 0 to indicate that
2175 // we cannot detect it.
2176 GTEST_API_ size_t GetThreadCount();
2177 
2178 // Passing non-POD classes through ellipsis (...) crashes the ARM
2179 // compiler and generates a warning in Sun Studio. The Nokia Symbian
2180 // and the IBM XL C/C++ compiler try to instantiate a copy constructor
2181 // for objects passed through ellipsis (...), failing for uncopyable
2182 // objects. We define this to ensure that only POD is passed through
2183 // ellipsis on these systems.
2184 #if defined(__SYMBIAN32__) || defined(__IBMCPP__) || defined(__SUNPRO_CC)
2185 // We lose support for NULL detection where the compiler doesn't like
2186 // passing non-POD classes through ellipsis (...).
2187 # define GTEST_ELLIPSIS_NEEDS_POD_ 1
2188 #else
2189 # define GTEST_CAN_COMPARE_NULL 1
2190 #endif
2191 
2192 // The Nokia Symbian and IBM XL C/C++ compilers cannot decide between
2193 // const T& and const T* in a function template. These compilers
2194 // _can_ decide between class template specializations for T and T*,
2195 // so a tr1::type_traits-like is_pointer works.
2196 #if defined(__SYMBIAN32__) || defined(__IBMCPP__)
2197 # define GTEST_NEEDS_IS_POINTER_ 1
2198 #endif
2199 
2200 template <bool bool_value>
2201 struct bool_constant {
2203  static const bool value = bool_value;
2204 };
2205 template <bool bool_value> const bool bool_constant<bool_value>::value;
2206 
2209 
2210 template <typename T>
2211 struct is_pointer : public false_type {};
2212 
2213 template <typename T>
2214 struct is_pointer<T*> : public true_type {};
2215 
2216 template <typename Iterator>
2217 struct IteratorTraits {
2218  typedef typename Iterator::value_type value_type;
2219 };
2220 
2221 template <typename T>
2222 struct IteratorTraits<T*> {
2223  typedef T value_type;
2224 };
2225 
2226 template <typename T>
2227 struct IteratorTraits<const T*> {
2228  typedef T value_type;
2229 };
2230 
2231 #if GTEST_OS_WINDOWS
2232 # define GTEST_PATH_SEP_ "\\"
2233 # define GTEST_HAS_ALT_PATH_SEP_ 1
2234 // The biggest signed integer type the compiler supports.
2235 typedef __int64 BiggestInt;
2236 #else
2237 # define GTEST_PATH_SEP_ "/"
2238 # define GTEST_HAS_ALT_PATH_SEP_ 0
2239 typedef long long BiggestInt; // NOLINT
2240 #endif // GTEST_OS_WINDOWS
2241 
2242 // Utilities for char.
2243 
2244 // isspace(int ch) and friends accept an unsigned char or EOF. char
2245 // may be signed, depending on the compiler (or compiler flags).
2246 // Therefore we need to cast a char to unsigned char before calling
2247 // isspace(), etc.
2248 
2249 inline bool IsAlpha(char ch) {
2250  return isalpha(static_cast<unsigned char>(ch)) != 0;
2251 }
2252 inline bool IsAlNum(char ch) {
2253  return isalnum(static_cast<unsigned char>(ch)) != 0;
2254 }
2255 inline bool IsDigit(char ch) {
2256  return isdigit(static_cast<unsigned char>(ch)) != 0;
2257 }
2258 inline bool IsLower(char ch) {
2259  return islower(static_cast<unsigned char>(ch)) != 0;
2260 }
2261 inline bool IsSpace(char ch) {
2262  return isspace(static_cast<unsigned char>(ch)) != 0;
2263 }
2264 inline bool IsUpper(char ch) {
2265  return isupper(static_cast<unsigned char>(ch)) != 0;
2266 }
2267 inline bool IsXDigit(char ch) {
2268  return isxdigit(static_cast<unsigned char>(ch)) != 0;
2269 }
2270 inline bool IsXDigit(wchar_t ch) {
2271  const unsigned char low_byte = static_cast<unsigned char>(ch);
2272  return ch == low_byte && isxdigit(low_byte) != 0;
2273 }
2274 
2275 inline char ToLower(char ch) {
2276  return static_cast<char>(tolower(static_cast<unsigned char>(ch)));
2277 }
2278 inline char ToUpper(char ch) {
2279  return static_cast<char>(toupper(static_cast<unsigned char>(ch)));
2280 }
2281 
2283  std::string::iterator it = str.end();
2284  while (it != str.begin() && IsSpace(*--it))
2285  it = str.erase(it);
2286  return str;
2287 }
2288 
2289 // The testing::internal::posix namespace holds wrappers for common
2290 // POSIX functions. These wrappers hide the differences between
2291 // Windows/MSVC and POSIX systems. Since some compilers define these
2292 // standard functions as macros, the wrapper cannot have the same name
2293 // as the wrapped function.
2294 
2295 namespace posix {
2296 
2297 // Functions with a different name on Windows.
2298 
2299 #if GTEST_OS_WINDOWS
2300 
2301 typedef struct _stat StatStruct;
2302 
2303 # ifdef __BORLANDC__
2304 inline int IsATTY(int fd) { return isatty(fd); }
2305 inline int StrCaseCmp(const char* s1, const char* s2) {
2306  return stricmp(s1, s2);
2307 }
2308 inline char* StrDup(const char* src) { return strdup(src); }
2309 # else // !__BORLANDC__
2310 # if GTEST_OS_WINDOWS_MOBILE
2311 inline int IsATTY(int /* fd */) { return 0; }
2312 # else
2313 inline int IsATTY(int fd) { return _isatty(fd); }
2314 # endif // GTEST_OS_WINDOWS_MOBILE
2315 inline int StrCaseCmp(const char* s1, const char* s2) {
2316  return _stricmp(s1, s2);
2317 }
2318 inline char* StrDup(const char* src) { return _strdup(src); }
2319 # endif // __BORLANDC__
2320 
2321 # if GTEST_OS_WINDOWS_MOBILE
2322 inline int FileNo(FILE* file) { return reinterpret_cast<int>(_fileno(file)); }
2323 // Stat(), RmDir(), and IsDir() are not needed on Windows CE at this
2324 // time and thus not defined there.
2325 # else
2326 inline int FileNo(FILE* file) { return _fileno(file); }
2327 inline int Stat(const char* path, StatStruct* buf) { return _stat(path, buf); }
2328 inline int RmDir(const char* dir) { return _rmdir(dir); }
2329 inline bool IsDir(const StatStruct& st) {
2330  return (_S_IFDIR & st.st_mode) != 0;
2331 }
2332 # endif // GTEST_OS_WINDOWS_MOBILE
2333 
2334 #else
2335 
2336 typedef struct stat StatStruct;
2337 
2338 inline int FileNo(FILE* file) { return fileno(file); }
2339 inline int IsATTY(int fd) { return isatty(fd); }
2340 inline int Stat(const char* path, StatStruct* buf) { return stat(path, buf); }
2341 inline int StrCaseCmp(const char* s1, const char* s2) {
2342  return strcasecmp(s1, s2);
2343 }
2344 inline char* StrDup(const char* src) { return strdup(src); }
2345 inline int RmDir(const char* dir) { return rmdir(dir); }
2346 inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }
2347 
2348 #endif // GTEST_OS_WINDOWS
2349 
2350 // Functions deprecated by MSVC 8.0.
2351 
2352 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4996 /* deprecated function */)
2353 
2354 inline const char* StrNCpy(char* dest, const char* src, size_t n) {
2355  return strncpy(dest, src, n);
2356 }
2357 
2358 // ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and
2359 // StrError() aren't needed on Windows CE at this time and thus not
2360 // defined there.
2361 
2362 #if !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT
2363 inline int ChDir(const char* dir) { return chdir(dir); }
2364 #endif
2365 inline FILE* FOpen(const char* path, const char* mode) {
2366  return fopen(path, mode);
2367 }
2368 #if !GTEST_OS_WINDOWS_MOBILE
2369 inline FILE *FReopen(const char* path, const char* mode, FILE* stream) {
2370  return freopen(path, mode, stream);
2371 }
2372 inline FILE* FDOpen(int fd, const char* mode) { return fdopen(fd, mode); }
2373 #endif
2374 inline int FClose(FILE* fp) { return fclose(fp); }
2375 #if !GTEST_OS_WINDOWS_MOBILE
2376 inline int Read(int fd, void* buf, unsigned int count) {
2377  return static_cast<int>(read(fd, buf, count));
2378 }
2379 inline int Write(int fd, const void* buf, unsigned int count) {
2380  return static_cast<int>(write(fd, buf, count));
2381 }
2382 inline int Close(int fd) { return close(fd); }
2383 inline const char* StrError(int errnum) { return strerror(errnum); }
2384 #endif
2385 inline const char* GetEnv(const char* name) {
2386 #if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE | GTEST_OS_WINDOWS_RT
2387  // We are on Windows CE, which has no environment variables.
2388  static_cast<void>(name); // To prevent 'unused argument' warning.
2389  return NULL;
2390 #elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
2391  // Environment variables which we programmatically clear will be set to the
2392  // empty string rather than unset (NULL). Handle that case.
2393  const char* const env = getenv(name);
2394  return (env != NULL && env[0] != '\0') ? env : NULL;
2395 #else
2396  return getenv(name);
2397 #endif
2398 }
2399 
2401 
2402 #if GTEST_OS_WINDOWS_MOBILE
2403 // Windows CE has no C library. The abort() function is used in
2404 // several places in Google Test. This implementation provides a reasonable
2405 // imitation of standard behaviour.
2406 void Abort();
2407 #else
2408 inline void Abort() { abort(); }
2409 #endif // GTEST_OS_WINDOWS_MOBILE
2410 
2411 } // namespace posix
2412 
2413 // MSVC "deprecates" snprintf and issues warnings wherever it is used. In
2414 // order to avoid these warnings, we need to use _snprintf or _snprintf_s on
2415 // MSVC-based platforms. We map the GTEST_SNPRINTF_ macro to the appropriate
2416 // function in order to achieve that. We use macro definition here because
2417 // snprintf is a variadic function.
2418 #if _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE
2419 // MSVC 2005 and above support variadic macros.
2420 # define GTEST_SNPRINTF_(buffer, size, format, ...) \
2421  _snprintf_s(buffer, size, size, format, __VA_ARGS__)
2422 #elif defined(_MSC_VER)
2423 // Windows CE does not define _snprintf_s and MSVC prior to 2005 doesn't
2424 // complain about _snprintf.
2425 # define GTEST_SNPRINTF_ _snprintf
2426 #else
2427 # define GTEST_SNPRINTF_ snprintf
2428 #endif
2429 
2430 // The maximum number a BiggestInt can represent. This definition
2431 // works no matter BiggestInt is represented in one's complement or
2432 // two's complement.
2433 //
2434 // We cannot rely on numeric_limits in STL, as __int64 and long long
2435 // are not part of standard C++ and numeric_limits doesn't need to be
2436 // defined for them.
2437 const BiggestInt kMaxBiggestInt =
2438  ~(static_cast<BiggestInt>(1) << (8*sizeof(BiggestInt) - 1));
2439 
2440 // This template class serves as a compile-time function from size to
2441 // type. It maps a size in bytes to a primitive type with that
2442 // size. e.g.
2443 //
2444 // TypeWithSize<4>::UInt
2445 //
2446 // is typedef-ed to be unsigned int (unsigned integer made up of 4
2447 // bytes).
2448 //
2449 // Such functionality should belong to STL, but I cannot find it
2450 // there.
2451 //
2452 // Google Test uses this class in the implementation of floating-point
2453 // comparison.
2454 //
2455 // For now it only handles UInt (unsigned int) as that's all Google Test
2456 // needs. Other types can be easily added in the future if need
2457 // arises.
2458 template <size_t size>
2459 class TypeWithSize {
2460  public:
2461  // This prevents the user from using TypeWithSize<N> with incorrect
2462  // values of N.
2463  typedef void UInt;
2464 };
2465 
2466 // The specialization for size 4.
2467 template <>
2468 class TypeWithSize<4> {
2469  public:
2470  // unsigned int has size 4 in both gcc and MSVC.
2471  //
2472  // As base/basictypes.h doesn't compile on Windows, we cannot use
2473  // uint32, uint64, and etc here.
2474  typedef int Int;
2475  typedef unsigned int UInt;
2476 };
2477 
2478 // The specialization for size 8.
2479 template <>
2480 class TypeWithSize<8> {
2481  public:
2482 #if GTEST_OS_WINDOWS
2483  typedef __int64 Int;
2484  typedef unsigned __int64 UInt;
2485 #else
2486  typedef long long Int; // NOLINT
2487  typedef unsigned long long UInt; // NOLINT
2488 #endif // GTEST_OS_WINDOWS
2489 };
2490 
2491 // Integer types of known sizes.
2492 typedef TypeWithSize<4>::Int Int32;
2494 typedef TypeWithSize<8>::Int Int64;
2496 typedef TypeWithSize<8>::Int TimeInMillis; // Represents time in milliseconds.
2497 
2498 // Utilities for command line flags and environment variables.
2499 
2500 // Macro for referencing flags.
2501 #if !defined(GTEST_FLAG)
2502 # define GTEST_FLAG(name) FLAGS_gtest_##name
2503 #endif // !defined(GTEST_FLAG)
2504 
2505 #if !defined(GTEST_USE_OWN_FLAGFILE_FLAG_)
2506 # define GTEST_USE_OWN_FLAGFILE_FLAG_ 1
2507 #endif // !defined(GTEST_USE_OWN_FLAGFILE_FLAG_)
2508 
2509 #if !defined(GTEST_DECLARE_bool_)
2510 # define GTEST_FLAG_SAVER_ ::testing::internal::GTestFlagSaver
2511 
2512 // Macros for declaring flags.
2513 # define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name)
2514 # define GTEST_DECLARE_int32_(name) \
2515  GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name)
2516 #define GTEST_DECLARE_string_(name) \
2517  GTEST_API_ extern ::std::string GTEST_FLAG(name)
2518 
2519 // Macros for defining flags.
2520 #define GTEST_DEFINE_bool_(name, default_val, doc) \
2521  GTEST_API_ bool GTEST_FLAG(name) = (default_val)
2522 #define GTEST_DEFINE_int32_(name, default_val, doc) \
2523  GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val)
2524 #define GTEST_DEFINE_string_(name, default_val, doc) \
2525  GTEST_API_ ::std::string GTEST_FLAG(name) = (default_val)
2526 
2527 #endif // !defined(GTEST_DECLARE_bool_)
2528 
2529 // Thread annotations
2530 #if !defined(GTEST_EXCLUSIVE_LOCK_REQUIRED_)
2531 # define GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks)
2532 # define GTEST_LOCK_EXCLUDED_(locks)
2533 #endif // !defined(GTEST_EXCLUSIVE_LOCK_REQUIRED_)
2534 
2535 // Parses 'str' for a 32-bit signed integer. If successful, writes the result
2536 // to *value and returns true; otherwise leaves *value unchanged and returns
2537 // false.
2538 // TODO(chandlerc): Find a better way to refactor flag and environment parsing
2539 // out of both gtest-port.cc and gtest.cc to avoid exporting this utility
2540 // function.
2541 bool ParseInt32(const Message& src_text, const char* str, Int32* value);
2542 
2543 // Parses a bool/Int32/string from the environment variable
2544 // corresponding to the given Google Test flag.
2545 bool BoolFromGTestEnv(const char* flag, bool default_val);
2546 GTEST_API_ Int32 Int32FromGTestEnv(const char* flag, Int32 default_val);
2547 const char* StringFromGTestEnv(const char* flag, const char* default_val);
2548 
2549 } // namespace internal
2550 } // namespace testing
2551 
2552 #endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
2553 
bool IsXDigit(char ch)
Definition: gtest-port.h:2269
TypeWithSize< 8 >::Int Int64
Definition: gtest-port.h:2496
#define GTEST_DISABLE_MSC_WARNINGS_POP_()
Definition: gtest-port.h:318
GTEST_API_ std::string GetCapturedStdout()
const uint32_t T[512]
GTEST_API_ std::string GetCapturedStderr()
To ImplicitCast_(To x)
Definition: gtest-port.h:1343
#define GTEST_DISALLOW_COPY_AND_ASSIGN_(type)
Definition: gtest-port.h:875
GTEST_API_ std::string TempDir()
char * StrDup(const char *src)
Definition: gtest-port.h:2346
GTEST_API_ size_t GetThreadCount()
const char * pattern() const
Definition: gtest-port.h:1175
#define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings)
Definition: gtest-port.h:317
static bool PartialMatch(const ::std::string &str, const RE &re)
Definition: gtest-port.h:1188
::std::string string
Definition: gtest-port.h:1097
GTEST_API_ bool IsTrue(bool condition)
CXA_THROW_INFO_T void(* dest)(void *))
Definition: stack_trace.cpp:91
TypeWithSize< 4 >::Int Int32
Definition: gtest-port.h:2494
GTEST_API_ std::string ReadEntireFile(FILE *file)
FILE * FOpen(const char *path, const char *mode)
Definition: gtest-port.h:2367
Derived * CheckedDowncastToActualType(Base *base)
Definition: gtest-port.h:1392
std::string StringFromGTestEnv(const char *flag, const char *default_val)
GTEST_API_ ::std::string FormatFileLocation(const char *file, int line)
TypeWithSize< 4 >::UInt UInt32
Definition: gtest-port.h:2495
bool_constant< bool_value > type
Definition: gtest-port.h:2202
bool ParseInt32(const Message &src_text, const char *str, Int32 *value)
const char * key
Definition: hmac_keccak.cpp:39
RE(const char *regex)
Definition: gtest-port.h:1172
bool IsDigit(char ch)
Definition: gtest-port.h:2257
STL namespace.
FILE * FReopen(const char *path, const char *mode, FILE *stream)
Definition: gtest-port.h:2371
int Stat(const char *path, StatStruct *buf)
Definition: gtest-port.h:2342
base::threading::internal::Mutex Mutex
int ChDir(const char *dir)
Definition: gtest-port.h:2365
TypeWithSize< 8 >::UInt UInt64
Definition: gtest-port.h:2497
GTEST_API_ void CaptureStdout()
const char * name
To DownCast_(From *f)
Definition: gtest-port.h:1367
tuple make_tuple()
Definition: gtest-tuple.h:675
GTEST_API_ size_t GetFileSize(FILE *file)
bool_constant< true > true_type
Definition: gtest-port.h:2210
int Write(int fd, const void *buf, unsigned int count)
Definition: gtest-port.h:2381
char ToLower(char ch)
Definition: gtest-port.h:2277
bool IsSpace(char ch)
Definition: gtest-port.h:2263
mdb_size_t count(MDB_cursor *cur)
time_t time
Definition: blockchain.cpp:93
::std::ostream & GetStream()
Definition: gtest-port.h:1262
int RmDir(const char *dir)
Definition: gtest-port.h:2347
::std::wstring wstring
Definition: gtest-port.h:1103
static bool FullMatch(const ::std::string &str, const RE &re)
Definition: gtest-port.h:1185
friend void swap(scoped_ptr &a, scoped_ptr &b)
Definition: gtest-port.h:1142
int Read(int fd, void *buf, unsigned int count)
Definition: gtest-port.h:2378
GTestMutexLock MutexLock
Definition: gtest-port.h:2159
int StrCaseCmp(const char *s1, const char *s2)
Definition: gtest-port.h:2343
#define false
Definition: stdbool.h:38
long long BiggestInt
Definition: gtest-port.h:2241
const char * StrNCpy(char *dest, const char *src, size_t n)
Definition: gtest-port.h:2356
bool IsDir(const StatStruct &st)
Definition: gtest-port.h:2348
bool IsAlpha(char ch)
Definition: gtest-port.h:2251
const char * buf
Definition: slow_memmem.cpp:74
#define GTEST_INTENTIONAL_CONST_COND_PUSH_()
Definition: gtest-port.h:898
const GenericPointer< typename T::ValueType > T2 T::AllocatorType & a
Definition: pointer.h:1124
int FileNo(FILE *file)
Definition: gtest-port.h:2340
GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(const char *file, int line)
FILE * FDOpen(int fd, const char *mode)
Definition: gtest-port.h:2374
bool BoolFromGTestEnv(const char *flag, bool default_val)
bool IsLower(char ch)
Definition: gtest-port.h:2260
const T & move(const T &t)
Definition: gtest-port.h:1317
#define GTEST_API_
Definition: gtest-port.h:935
#define GTEST_CHECK_(condition)
Definition: gtest-port.h:1296
RE(const RE &other)
Definition: gtest-port.h:1161
const GenericPointer< typename T::ValueType > T2 value
Definition: pointer.h:1225
const char * StrError(int errnum)
Definition: gtest-port.h:2385
char ToUpper(char ch)
Definition: gtest-port.h:2280
GTEST_API_ void CaptureStderr()
bool_constant< false > false_type
Definition: gtest-port.h:2209
GTEST_API_ Int32 Int32FromGTestEnv(const char *flag, Int32 default_val)
bool IsUpper(char ch)
Definition: gtest-port.h:2266
RE(const ::std::string &regex)
Definition: gtest-port.h:1164
#define GTEST_INTENTIONAL_CONST_COND_POP_()
Definition: gtest-port.h:900
else if(0==res)
#define GTEST_DISALLOW_ASSIGN_(type)
Definition: gtest-port.h:870
TypeWithSize< 8 >::Int TimeInMillis
Definition: gtest-port.h:2498
Iterator::value_type value_type
Definition: gtest-port.h:2218
void get(std::istream &input, bool &res)
Definition: io.h:62
const char * GetEnv(const char *name)
Definition: gtest-port.h:2387
#define GTEST_CHECK_POSIX_SUCCESS_(posix_call)
Definition: gtest-port.h:1309
const BiggestInt kMaxBiggestInt
Definition: gtest-port.h:2439
std::string StripTrailingSpaces(std::string str)
Definition: gtest-port.h:2284
GTEST_API_ const ::std::vector< testing::internal::string > & GetArgvs()
#define inline
Definition: inline_c.h:35
bool IsAlNum(char ch)
Definition: gtest-port.h:2254