1 : // Copyright 2005, Google Inc.
2 : // All rights reserved.
3 : //
4 : // Redistribution and use in source and binary forms, with or without
5 : // modification, are permitted provided that the following conditions are
6 : // met:
7 : //
8 : // * Redistributions of source code must retain the above copyright
9 : // notice, this list of conditions and the following disclaimer.
10 : // * Redistributions in binary form must reproduce the above
11 : // copyright notice, this list of conditions and the following disclaimer
12 : // in the documentation and/or other materials provided with the
13 : // distribution.
14 : // * Neither the name of Google Inc. nor the names of its
15 : // contributors may be used to endorse or promote products derived from
16 : // this software without specific prior written permission.
17 : //
18 : // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 : // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 : // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 : // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 : // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 : // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 : // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 : // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 : // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 : // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 : // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 : //
30 : // Authors: wan@google.com (Zhanyong Wan)
31 : //
32 : // Low-level types and utilities for porting Google Test to various
33 : // platforms. They are subject to change without notice. DO NOT USE
34 : // THEM IN USER CODE.
35 : //
36 : // This file is fundamental to Google Test. All other Google Test source
37 : // files are expected to #include this. Therefore, it cannot #include
38 : // any other Google Test header.
39 :
40 : #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
41 : #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
42 :
43 : // The user can define the following macros in the build script to
44 : // control Google Test's behavior. If the user doesn't define a macro
45 : // in this list, Google Test will define it.
46 : //
47 : // GTEST_HAS_CLONE - Define it to 1/0 to indicate that clone(2)
48 : // is/isn't available.
49 : // GTEST_HAS_EXCEPTIONS - Define it to 1/0 to indicate that exceptions
50 : // are enabled.
51 : // GTEST_HAS_GLOBAL_STRING - Define it to 1/0 to indicate that ::string
52 : // is/isn't available (some systems define
53 : // ::string, which is different to std::string).
54 : // GTEST_HAS_GLOBAL_WSTRING - Define it to 1/0 to indicate that ::string
55 : // is/isn't available (some systems define
56 : // ::wstring, which is different to std::wstring).
57 : // GTEST_HAS_POSIX_RE - Define it to 1/0 to indicate that POSIX regular
58 : // expressions are/aren't available.
59 : // GTEST_HAS_PTHREAD - Define it to 1/0 to indicate that <pthread.h>
60 : // is/isn't available.
61 : // GTEST_HAS_RTTI - Define it to 1/0 to indicate that RTTI is/isn't
62 : // enabled.
63 : // GTEST_HAS_STD_WSTRING - Define it to 1/0 to indicate that
64 : // std::wstring does/doesn't work (Google Test can
65 : // be used where std::wstring is unavailable).
66 : // GTEST_HAS_TR1_TUPLE - Define it to 1/0 to indicate tr1::tuple
67 : // is/isn't available.
68 : // GTEST_HAS_SEH - Define it to 1/0 to indicate whether the
69 : // compiler supports Microsoft's "Structured
70 : // Exception Handling".
71 : // GTEST_HAS_STREAM_REDIRECTION
72 : // - Define it to 1/0 to indicate whether the
73 : // platform supports I/O stream redirection using
74 : // dup() and dup2().
75 : // GTEST_USE_OWN_TR1_TUPLE - Define it to 1/0 to indicate whether Google
76 : // Test's own tr1 tuple implementation should be
77 : // used. Unused when the user sets
78 : // GTEST_HAS_TR1_TUPLE to 0.
79 : // GTEST_LANG_CXX11 - Define it to 1/0 to indicate that Google Test
80 : // is building in C++11/C++98 mode.
81 : // GTEST_LINKED_AS_SHARED_LIBRARY
82 : // - Define to 1 when compiling tests that use
83 : // Google Test as a shared library (known as
84 : // DLL on Windows).
85 : // GTEST_CREATE_SHARED_LIBRARY
86 : // - Define to 1 when compiling Google Test itself
87 : // as a shared library.
88 :
89 : // This header defines the following utilities:
90 : //
91 : // Macros indicating the current platform (defined to 1 if compiled on
92 : // the given platform; otherwise undefined):
93 : // GTEST_OS_AIX - IBM AIX
94 : // GTEST_OS_CYGWIN - Cygwin
95 : // GTEST_OS_HPUX - HP-UX
96 : // GTEST_OS_LINUX - Linux
97 : // GTEST_OS_LINUX_ANDROID - Google Android
98 : // GTEST_OS_MAC - Mac OS X
99 : // GTEST_OS_IOS - iOS
100 : // GTEST_OS_IOS_SIMULATOR - iOS simulator
101 : // GTEST_OS_NACL - Google Native Client (NaCl)
102 : // GTEST_OS_OPENBSD - OpenBSD
103 : // GTEST_OS_QNX - QNX
104 : // GTEST_OS_SOLARIS - Sun Solaris
105 : // GTEST_OS_SYMBIAN - Symbian
106 : // GTEST_OS_WINDOWS - Windows (Desktop, MinGW, or Mobile)
107 : // GTEST_OS_WINDOWS_DESKTOP - Windows Desktop
108 : // GTEST_OS_WINDOWS_MINGW - MinGW
109 : // GTEST_OS_WINDOWS_MOBILE - Windows Mobile
110 : // GTEST_OS_ZOS - z/OS
111 : //
112 : // Among the platforms, Cygwin, Linux, Max OS X, and Windows have the
113 : // most stable support. Since core members of the Google Test project
114 : // don't have access to other platforms, support for them may be less
115 : // stable. If you notice any problems on your platform, please notify
116 : // googletestframework@googlegroups.com (patches for fixing them are
117 : // even more welcome!).
118 : //
119 : // Note that it is possible that none of the GTEST_OS_* macros are defined.
120 : //
121 : // Macros indicating available Google Test features (defined to 1 if
122 : // the corresponding feature is supported; otherwise undefined):
123 : // GTEST_HAS_COMBINE - the Combine() function (for value-parameterized
124 : // tests)
125 : // GTEST_HAS_DEATH_TEST - death tests
126 : // GTEST_HAS_PARAM_TEST - value-parameterized tests
127 : // GTEST_HAS_TYPED_TEST - typed tests
128 : // GTEST_HAS_TYPED_TEST_P - type-parameterized tests
129 : // GTEST_USES_POSIX_RE - enhanced POSIX regex is used. Do not confuse with
130 : // GTEST_HAS_POSIX_RE (see above) which users can
131 : // define themselves.
132 : // GTEST_USES_SIMPLE_RE - our own simple regex is used;
133 : // the above two are mutually exclusive.
134 : // GTEST_CAN_COMPARE_NULL - accepts untyped NULL in EXPECT_EQ().
135 : //
136 : // Macros for basic C++ coding:
137 : // GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning.
138 : // GTEST_ATTRIBUTE_UNUSED_ - declares that a class' instances or a
139 : // variable don't have to be used.
140 : // GTEST_DISALLOW_ASSIGN_ - disables operator=.
141 : // GTEST_DISALLOW_COPY_AND_ASSIGN_ - disables copy ctor and operator=.
142 : // GTEST_MUST_USE_RESULT_ - declares that a function's result must be used.
143 : //
144 : // Synchronization:
145 : // Mutex, MutexLock, ThreadLocal, GetThreadCount()
146 : // - synchronization primitives.
147 : // GTEST_IS_THREADSAFE - defined to 1 to indicate that the above
148 : // synchronization primitives have real implementations
149 : // and Google Test is thread-safe; or 0 otherwise.
150 : //
151 : // Template meta programming:
152 : // is_pointer - as in TR1; needed on Symbian and IBM XL C/C++ only.
153 : // IteratorTraits - partial implementation of std::iterator_traits, which
154 : // is not available in libCstd when compiled with Sun C++.
155 : //
156 : // Smart pointers:
157 : // scoped_ptr - as in TR2.
158 : //
159 : // Regular expressions:
160 : // RE - a simple regular expression class using the POSIX
161 : // Extended Regular Expression syntax on UNIX-like
162 : // platforms, or a reduced regular exception syntax on
163 : // other platforms, including Windows.
164 : //
165 : // Logging:
166 : // GTEST_LOG_() - logs messages at the specified severity level.
167 : // LogToStderr() - directs all log messages to stderr.
168 : // FlushInfoLog() - flushes informational log messages.
169 : //
170 : // Stdout and stderr capturing:
171 : // CaptureStdout() - starts capturing stdout.
172 : // GetCapturedStdout() - stops capturing stdout and returns the captured
173 : // string.
174 : // CaptureStderr() - starts capturing stderr.
175 : // GetCapturedStderr() - stops capturing stderr and returns the captured
176 : // string.
177 : //
178 : // Integer types:
179 : // TypeWithSize - maps an integer to a int type.
180 : // Int32, UInt32, Int64, UInt64, TimeInMillis
181 : // - integers of known sizes.
182 : // BiggestInt - the biggest signed integer type.
183 : //
184 : // Command-line utilities:
185 : // GTEST_FLAG() - references a flag.
186 : // GTEST_DECLARE_*() - declares a flag.
187 : // GTEST_DEFINE_*() - defines a flag.
188 : // GetInjectableArgvs() - returns the command line as a vector of strings.
189 : //
190 : // Environment variable utilities:
191 : // GetEnv() - gets the value of an environment variable.
192 : // BoolFromGTestEnv() - parses a bool environment variable.
193 : // Int32FromGTestEnv() - parses an Int32 environment variable.
194 : // StringFromGTestEnv() - parses a string environment variable.
195 :
196 : #include <ctype.h> // for isspace, etc
197 : #include <stddef.h> // for ptrdiff_t
198 : #include <stdlib.h>
199 : #include <stdio.h>
200 : #include <string.h>
201 : #ifndef _WIN32_WCE
202 : # include <sys/types.h>
203 : # include <sys/stat.h>
204 : #endif // !_WIN32_WCE
205 :
206 : #if defined __APPLE__
207 : # include <AvailabilityMacros.h>
208 : # include <TargetConditionals.h>
209 : #endif
210 :
211 : #include <iostream> // NOLINT
212 : #include <sstream> // NOLINT
213 : #include <string> // NOLINT
214 :
215 : #define GTEST_DEV_EMAIL_ "googletestframework@@googlegroups.com"
216 : #define GTEST_FLAG_PREFIX_ "gtest_"
217 : #define GTEST_FLAG_PREFIX_DASH_ "gtest-"
218 : #define GTEST_FLAG_PREFIX_UPPER_ "GTEST_"
219 : #define GTEST_NAME_ "Google Test"
220 : #define GTEST_PROJECT_URL_ "http://code.google.com/p/googletest/"
221 :
222 : // Determines the version of gcc that is used to compile this.
223 : #ifdef __GNUC__
224 : // 40302 means version 4.3.2.
225 : # define GTEST_GCC_VER_ \
226 : (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__)
227 : #endif // __GNUC__
228 :
229 : // Determines the platform on which Google Test is compiled.
230 : #ifdef __CYGWIN__
231 : # define GTEST_OS_CYGWIN 1
232 : #elif defined __SYMBIAN32__
233 : # define GTEST_OS_SYMBIAN 1
234 : #elif defined _WIN32
235 : # define GTEST_OS_WINDOWS 1
236 : # ifdef _WIN32_WCE
237 : # define GTEST_OS_WINDOWS_MOBILE 1
238 : # elif defined(__MINGW__) || defined(__MINGW32__)
239 : # define GTEST_OS_WINDOWS_MINGW 1
240 : # else
241 : # define GTEST_OS_WINDOWS_DESKTOP 1
242 : # endif // _WIN32_WCE
243 : #elif defined __APPLE__
244 : # define GTEST_OS_MAC 1
245 : # if TARGET_OS_IPHONE
246 : # define GTEST_OS_IOS 1
247 : # if TARGET_IPHONE_SIMULATOR
248 : # define GTEST_OS_IOS_SIMULATOR 1
249 : # endif
250 : # endif
251 : #elif defined __linux__
252 : # define GTEST_OS_LINUX 1
253 : # if defined __ANDROID__
254 : # define GTEST_OS_LINUX_ANDROID 1
255 : # endif
256 : #elif defined __MVS__
257 : # define GTEST_OS_ZOS 1
258 : #elif defined(__sun) && defined(__SVR4)
259 : # define GTEST_OS_SOLARIS 1
260 : #elif defined(_AIX)
261 : # define GTEST_OS_AIX 1
262 : #elif defined(__hpux)
263 : # define GTEST_OS_HPUX 1
264 : #elif defined __native_client__
265 : # define GTEST_OS_NACL 1
266 : #elif defined __OpenBSD__
267 : # define GTEST_OS_OPENBSD 1
268 : #elif defined __QNX__
269 : # define GTEST_OS_QNX 1
270 : #endif // __CYGWIN__
271 :
272 : #ifndef GTEST_LANG_CXX11
273 : // gcc and clang define __GXX_EXPERIMENTAL_CXX0X__ when
274 : // -std={c,gnu}++{0x,11} is passed. The C++11 standard specifies a
275 : // value for __cplusplus, and recent versions of clang, gcc, and
276 : // probably other compilers set that too in C++11 mode.
277 : # if __GXX_EXPERIMENTAL_CXX0X__ || __cplusplus >= 201103L
278 : // Compiling in at least C++11 mode.
279 : # define GTEST_LANG_CXX11 1
280 : # else
281 : # define GTEST_LANG_CXX11 0
282 : # endif
283 : #endif
284 :
285 : // Brings in definitions for functions used in the testing::internal::posix
286 : // namespace (read, write, close, chdir, isatty, stat). We do not currently
287 : // use them on Windows Mobile.
288 : #if !GTEST_OS_WINDOWS
289 : // This assumes that non-Windows OSes provide unistd.h. For OSes where this
290 : // is not the case, we need to include headers that provide the functions
291 : // mentioned above.
292 : # include <unistd.h>
293 : # include <strings.h>
294 : #elif !GTEST_OS_WINDOWS_MOBILE
295 : # include <direct.h>
296 : # include <io.h>
297 : #endif
298 :
299 : #if GTEST_OS_LINUX_ANDROID
300 : // Used to define __ANDROID_API__ matching the target NDK API level.
301 : # include <android/api-level.h> // NOLINT
302 : #endif
303 :
304 : // Defines this to true iff Google Test can use POSIX regular expressions.
305 : #ifndef GTEST_HAS_POSIX_RE
306 : # if GTEST_OS_LINUX_ANDROID
307 : // On Android, <regex.h> is only available starting with Gingerbread.
308 : # define GTEST_HAS_POSIX_RE (__ANDROID_API__ >= 9)
309 : # else
310 : # define GTEST_HAS_POSIX_RE (!GTEST_OS_WINDOWS)
311 : # endif
312 : #endif
313 :
314 : #if GTEST_HAS_POSIX_RE
315 :
316 : // On some platforms, <regex.h> needs someone to define size_t, and
317 : // won't compile otherwise. We can #include it here as we already
318 : // included <stdlib.h>, which is guaranteed to define size_t through
319 : // <stddef.h>.
320 : # include <regex.h> // NOLINT
321 :
322 : # define GTEST_USES_POSIX_RE 1
323 :
324 : #elif GTEST_OS_WINDOWS
325 :
326 : // <regex.h> is not available on Windows. Use our own simple regex
327 : // implementation instead.
328 : # define GTEST_USES_SIMPLE_RE 1
329 :
330 : #else
331 :
332 : // <regex.h> may not be available on this platform. Use our own
333 : // simple regex implementation instead.
334 : # define GTEST_USES_SIMPLE_RE 1
335 :
336 : #endif // GTEST_HAS_POSIX_RE
337 :
338 : #ifndef GTEST_HAS_EXCEPTIONS
339 : // The user didn't tell us whether exceptions are enabled, so we need
340 : // to figure it out.
341 : # if defined(_MSC_VER) || defined(__BORLANDC__)
342 : // MSVC's and C++Builder's implementations of the STL use the _HAS_EXCEPTIONS
343 : // macro to enable exceptions, so we'll do the same.
344 : // Assumes that exceptions are enabled by default.
345 : # ifndef _HAS_EXCEPTIONS
346 : # define _HAS_EXCEPTIONS 1
347 : # endif // _HAS_EXCEPTIONS
348 : # define GTEST_HAS_EXCEPTIONS _HAS_EXCEPTIONS
349 : # elif defined(__GNUC__) && __EXCEPTIONS
350 : // gcc defines __EXCEPTIONS to 1 iff exceptions are enabled.
351 : # define GTEST_HAS_EXCEPTIONS 1
352 : # elif defined(__SUNPRO_CC)
353 : // Sun Pro CC supports exceptions. However, there is no compile-time way of
354 : // detecting whether they are enabled or not. Therefore, we assume that
355 : // they are enabled unless the user tells us otherwise.
356 : # define GTEST_HAS_EXCEPTIONS 1
357 : # elif defined(__IBMCPP__) && __EXCEPTIONS
358 : // xlC defines __EXCEPTIONS to 1 iff exceptions are enabled.
359 : # define GTEST_HAS_EXCEPTIONS 1
360 : # elif defined(__HP_aCC)
361 : // Exception handling is in effect by default in HP aCC compiler. It has to
362 : // be turned of by +noeh compiler option if desired.
363 : # define GTEST_HAS_EXCEPTIONS 1
364 : # else
365 : // For other compilers, we assume exceptions are disabled to be
366 : // conservative.
367 : # define GTEST_HAS_EXCEPTIONS 0
368 : # endif // defined(_MSC_VER) || defined(__BORLANDC__)
369 : #endif // GTEST_HAS_EXCEPTIONS
370 :
371 : #if !defined(GTEST_HAS_STD_STRING)
372 : // Even though we don't use this macro any longer, we keep it in case
373 : // some clients still depend on it.
374 : # define GTEST_HAS_STD_STRING 1
375 : #elif !GTEST_HAS_STD_STRING
376 : // The user told us that ::std::string isn't available.
377 : # error "Google Test cannot be used where ::std::string isn't available."
378 : #endif // !defined(GTEST_HAS_STD_STRING)
379 :
380 : #ifndef GTEST_HAS_GLOBAL_STRING
381 : // The user didn't tell us whether ::string is available, so we need
382 : // to figure it out.
383 :
384 : # define GTEST_HAS_GLOBAL_STRING 0
385 :
386 : #endif // GTEST_HAS_GLOBAL_STRING
387 :
388 : #ifndef GTEST_HAS_STD_WSTRING
389 : // The user didn't tell us whether ::std::wstring is available, so we need
390 : // to figure it out.
391 : // TODO(wan@google.com): uses autoconf to detect whether ::std::wstring
392 : // is available.
393 :
394 : // Cygwin 1.7 and below doesn't support ::std::wstring.
395 : // Solaris' libc++ doesn't support it either. Android has
396 : // no support for it at least as recent as Froyo (2.2).
397 : # define GTEST_HAS_STD_WSTRING \
398 : (!(GTEST_OS_LINUX_ANDROID || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS))
399 :
400 : #endif // GTEST_HAS_STD_WSTRING
401 :
402 : #ifndef GTEST_HAS_GLOBAL_WSTRING
403 : // The user didn't tell us whether ::wstring is available, so we need
404 : // to figure it out.
405 : # define GTEST_HAS_GLOBAL_WSTRING \
406 : (GTEST_HAS_STD_WSTRING && GTEST_HAS_GLOBAL_STRING)
407 : #endif // GTEST_HAS_GLOBAL_WSTRING
408 :
409 : // Determines whether RTTI is available.
410 : #ifndef GTEST_HAS_RTTI
411 : // The user didn't tell us whether RTTI is enabled, so we need to
412 : // figure it out.
413 :
414 : # ifdef _MSC_VER
415 :
416 : # ifdef _CPPRTTI // MSVC defines this macro iff RTTI is enabled.
417 : # define GTEST_HAS_RTTI 1
418 : # else
419 : # define GTEST_HAS_RTTI 0
420 : # endif
421 :
422 : // Starting with version 4.3.2, gcc defines __GXX_RTTI iff RTTI is enabled.
423 : # elif defined(__GNUC__) && (GTEST_GCC_VER_ >= 40302)
424 :
425 : # ifdef __GXX_RTTI
426 : // When building against STLport with the Android NDK and with
427 : // -frtti -fno-exceptions, the build fails at link time with undefined
428 : // references to __cxa_bad_typeid. Note sure if STL or toolchain bug,
429 : // so disable RTTI when detected.
430 : # if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR) && \
431 : !defined(__EXCEPTIONS)
432 : # define GTEST_HAS_RTTI 0
433 : # else
434 : # define GTEST_HAS_RTTI 1
435 : # endif // GTEST_OS_LINUX_ANDROID && __STLPORT_MAJOR && !__EXCEPTIONS
436 : # else
437 : # define GTEST_HAS_RTTI 0
438 : # endif // __GXX_RTTI
439 :
440 : // Clang defines __GXX_RTTI starting with version 3.0, but its manual recommends
441 : // using has_feature instead. has_feature(cxx_rtti) is supported since 2.7, the
442 : // first version with C++ support.
443 : # elif defined(__clang__)
444 :
445 : # define GTEST_HAS_RTTI __has_feature(cxx_rtti)
446 :
447 : // Starting with version 9.0 IBM Visual Age defines __RTTI_ALL__ to 1 if
448 : // both the typeid and dynamic_cast features are present.
449 : # elif defined(__IBMCPP__) && (__IBMCPP__ >= 900)
450 :
451 : # ifdef __RTTI_ALL__
452 : # define GTEST_HAS_RTTI 1
453 : # else
454 : # define GTEST_HAS_RTTI 0
455 : # endif
456 :
457 : # else
458 :
459 : // For all other compilers, we assume RTTI is enabled.
460 : # define GTEST_HAS_RTTI 1
461 :
462 : # endif // _MSC_VER
463 :
464 : #endif // GTEST_HAS_RTTI
465 :
466 : // It's this header's responsibility to #include <typeinfo> when RTTI
467 : // is enabled.
468 : #if GTEST_HAS_RTTI
469 : # include <typeinfo>
470 : #endif
471 :
472 : // Determines whether Google Test can use the pthreads library.
473 : #ifndef GTEST_HAS_PTHREAD
474 : // The user didn't tell us explicitly, so we assume pthreads support is
475 : // available on Linux and Mac.
476 : //
477 : // To disable threading support in Google Test, add -DGTEST_HAS_PTHREAD=0
478 : // to your compiler flags.
479 : # define GTEST_HAS_PTHREAD (GTEST_OS_LINUX || GTEST_OS_MAC || GTEST_OS_HPUX \
480 : || GTEST_OS_QNX)
481 : #endif // GTEST_HAS_PTHREAD
482 :
483 : #if GTEST_HAS_PTHREAD
484 : // gtest-port.h guarantees to #include <pthread.h> when GTEST_HAS_PTHREAD is
485 : // true.
486 : # include <pthread.h> // NOLINT
487 :
488 : // For timespec and nanosleep, used below.
489 : # include <time.h> // NOLINT
490 : #endif
491 :
492 : // Determines whether Google Test can use tr1/tuple. You can define
493 : // this macro to 0 to prevent Google Test from using tuple (any
494 : // feature depending on tuple with be disabled in this mode).
495 : #ifndef GTEST_HAS_TR1_TUPLE
496 : # if GTEST_OS_LINUX_ANDROID && defined(_STLPORT_MAJOR)
497 : // STLport, provided with the Android NDK, has neither <tr1/tuple> or <tuple>.
498 : # define GTEST_HAS_TR1_TUPLE 0
499 : # else
500 : // The user didn't tell us not to do it, so we assume it's OK.
501 : # define GTEST_HAS_TR1_TUPLE 1
502 : # endif
503 : #endif // GTEST_HAS_TR1_TUPLE
504 :
505 : // Determines whether Google Test's own tr1 tuple implementation
506 : // should be used.
507 : #ifndef GTEST_USE_OWN_TR1_TUPLE
508 : // The user didn't tell us, so we need to figure it out.
509 :
510 : // We use our own TR1 tuple if we aren't sure the user has an
511 : // implementation of it already. At this time, libstdc++ 4.0.0+ and
512 : // MSVC 2010 are the only mainstream standard libraries that come
513 : // with a TR1 tuple implementation. NVIDIA's CUDA NVCC compiler
514 : // pretends to be GCC by defining __GNUC__ and friends, but cannot
515 : // compile GCC's tuple implementation. MSVC 2008 (9.0) provides TR1
516 : // tuple in a 323 MB Feature Pack download, which we cannot assume the
517 : // user has. QNX's QCC compiler is a modified GCC but it doesn't
518 : // support TR1 tuple. libc++ only provides std::tuple, in C++11 mode,
519 : // and it can be used with some compilers that define __GNUC__.
520 : # if (defined(__GNUC__) && !defined(__CUDACC__) && (GTEST_GCC_VER_ >= 40000) \
521 : && !GTEST_OS_QNX && !defined(_LIBCPP_VERSION)) || _MSC_VER >= 1600
522 : # define GTEST_ENV_HAS_TR1_TUPLE_ 1
523 : # endif
524 :
525 : // C++11 specifies that <tuple> provides std::tuple. Use that if gtest is used
526 : // in C++11 mode and libstdc++ isn't very old (binaries targeting OS X 10.6
527 : // can build with clang but need to use gcc4.2's libstdc++).
528 : # if GTEST_LANG_CXX11 && (!defined(__GLIBCXX__) || __GLIBCXX__ > 20110325)
529 : # define GTEST_ENV_HAS_STD_TUPLE_ 1
530 : # endif
531 :
532 : # if GTEST_ENV_HAS_TR1_TUPLE_ || GTEST_ENV_HAS_STD_TUPLE_
533 : # define GTEST_USE_OWN_TR1_TUPLE 0
534 : # else
535 : # define GTEST_USE_OWN_TR1_TUPLE 1
536 : # endif
537 :
538 : #endif // GTEST_USE_OWN_TR1_TUPLE
539 :
540 : // To avoid conditional compilation everywhere, we make it
541 : // gtest-port.h's responsibility to #include the header implementing
542 : // tr1/tuple.
543 : #if GTEST_HAS_TR1_TUPLE
544 :
545 : # if GTEST_USE_OWN_TR1_TUPLE
546 : # include "gtest/internal/gtest-tuple.h"
547 : # elif GTEST_ENV_HAS_STD_TUPLE_
548 : # include <tuple>
549 : // C++11 puts its tuple into the ::std namespace rather than
550 : // ::std::tr1. gtest expects tuple to live in ::std::tr1, so put it there.
551 : // This causes undefined behavior, but supported compilers react in
552 : // the way we intend.
553 : namespace std {
554 : namespace tr1 {
555 : using ::std::get;
556 : using ::std::make_tuple;
557 : using ::std::tuple;
558 : using ::std::tuple_element;
559 : using ::std::tuple_size;
560 : }
561 : }
562 :
563 : # elif GTEST_OS_SYMBIAN
564 :
565 : // On Symbian, BOOST_HAS_TR1_TUPLE causes Boost's TR1 tuple library to
566 : // use STLport's tuple implementation, which unfortunately doesn't
567 : // work as the copy of STLport distributed with Symbian is incomplete.
568 : // By making sure BOOST_HAS_TR1_TUPLE is undefined, we force Boost to
569 : // use its own tuple implementation.
570 : # ifdef BOOST_HAS_TR1_TUPLE
571 : # undef BOOST_HAS_TR1_TUPLE
572 : # endif // BOOST_HAS_TR1_TUPLE
573 :
574 : // This prevents <boost/tr1/detail/config.hpp>, which defines
575 : // BOOST_HAS_TR1_TUPLE, from being #included by Boost's <tuple>.
576 : # define BOOST_TR1_DETAIL_CONFIG_HPP_INCLUDED
577 : # include <tuple>
578 :
579 : # elif defined(__GNUC__) && (GTEST_GCC_VER_ >= 40000)
580 : // GCC 4.0+ implements tr1/tuple in the <tr1/tuple> header. This does
581 : // not conform to the TR1 spec, which requires the header to be <tuple>.
582 :
583 : # if !GTEST_HAS_RTTI && GTEST_GCC_VER_ < 40302
584 : // Until version 4.3.2, gcc has a bug that causes <tr1/functional>,
585 : // which is #included by <tr1/tuple>, to not compile when RTTI is
586 : // disabled. _TR1_FUNCTIONAL is the header guard for
587 : // <tr1/functional>. Hence the following #define is a hack to prevent
588 : // <tr1/functional> from being included.
589 : # define _TR1_FUNCTIONAL 1
590 : # include <tr1/tuple>
591 : # undef _TR1_FUNCTIONAL // Allows the user to #include
592 : // <tr1/functional> if he chooses to.
593 : # else
594 : # include <tr1/tuple> // NOLINT
595 : # endif // !GTEST_HAS_RTTI && GTEST_GCC_VER_ < 40302
596 :
597 : # else
598 : // If the compiler is not GCC 4.0+, we assume the user is using a
599 : // spec-conforming TR1 implementation.
600 : # include <tuple> // NOLINT
601 : # endif // GTEST_USE_OWN_TR1_TUPLE
602 :
603 : #endif // GTEST_HAS_TR1_TUPLE
604 :
605 : // Determines whether clone(2) is supported.
606 : // Usually it will only be available on Linux, excluding
607 : // Linux on the Itanium architecture.
608 : // Also see http://linux.die.net/man/2/clone.
609 : #ifndef GTEST_HAS_CLONE
610 : // The user didn't tell us, so we need to figure it out.
611 :
612 : # if GTEST_OS_LINUX && !defined(__ia64__)
613 : # if GTEST_OS_LINUX_ANDROID
614 : // On Android, clone() is only available on ARM starting with Gingerbread.
615 : # if defined(__arm__) && __ANDROID_API__ >= 9
616 : # define GTEST_HAS_CLONE 1
617 : # else
618 : # define GTEST_HAS_CLONE 0
619 : # endif
620 : # else
621 : # define GTEST_HAS_CLONE 1
622 : # endif
623 : # else
624 : # define GTEST_HAS_CLONE 0
625 : # endif // GTEST_OS_LINUX && !defined(__ia64__)
626 :
627 : #endif // GTEST_HAS_CLONE
628 :
629 : // Determines whether to support stream redirection. This is used to test
630 : // output correctness and to implement death tests.
631 : #ifndef GTEST_HAS_STREAM_REDIRECTION
632 : // By default, we assume that stream redirection is supported on all
633 : // platforms except known mobile ones.
634 : # if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_SYMBIAN
635 : # define GTEST_HAS_STREAM_REDIRECTION 0
636 : # else
637 : # define GTEST_HAS_STREAM_REDIRECTION 1
638 : # endif // !GTEST_OS_WINDOWS_MOBILE && !GTEST_OS_SYMBIAN
639 : #endif // GTEST_HAS_STREAM_REDIRECTION
640 :
641 : // Determines whether to support death tests.
642 : // Google Test does not support death tests for VC 7.1 and earlier as
643 : // abort() in a VC 7.1 application compiled as GUI in debug config
644 : // pops up a dialog window that cannot be suppressed programmatically.
645 : #if (GTEST_OS_LINUX || GTEST_OS_CYGWIN || GTEST_OS_SOLARIS || \
646 : (GTEST_OS_MAC && !GTEST_OS_IOS) || GTEST_OS_IOS_SIMULATOR || \
647 : (GTEST_OS_WINDOWS_DESKTOP && _MSC_VER >= 1400) || \
648 : GTEST_OS_WINDOWS_MINGW || GTEST_OS_AIX || GTEST_OS_HPUX || \
649 : GTEST_OS_OPENBSD || GTEST_OS_QNX)
650 : # define GTEST_HAS_DEATH_TEST 1
651 : # include <vector> // NOLINT
652 : #endif
653 :
654 : // We don't support MSVC 7.1 with exceptions disabled now. Therefore
655 : // all the compilers we care about are adequate for supporting
656 : // value-parameterized tests.
657 : #define GTEST_HAS_PARAM_TEST 1
658 :
659 : // Determines whether to support type-driven tests.
660 :
661 : // Typed tests need <typeinfo> and variadic macros, which GCC, VC++ 8.0,
662 : // Sun Pro CC, IBM Visual Age, and HP aCC support.
663 : #if defined(__GNUC__) || (_MSC_VER >= 1400) || defined(__SUNPRO_CC) || \
664 : defined(__IBMCPP__) || defined(__HP_aCC)
665 : # define GTEST_HAS_TYPED_TEST 1
666 : # define GTEST_HAS_TYPED_TEST_P 1
667 : #endif
668 :
669 : // Determines whether to support Combine(). This only makes sense when
670 : // value-parameterized tests are enabled. The implementation doesn't
671 : // work on Sun Studio since it doesn't understand templated conversion
672 : // operators.
673 : #if GTEST_HAS_PARAM_TEST && GTEST_HAS_TR1_TUPLE && !defined(__SUNPRO_CC)
674 : # define GTEST_HAS_COMBINE 1
675 : #endif
676 :
677 : // Determines whether the system compiler uses UTF-16 for encoding wide strings.
678 : #define GTEST_WIDE_STRING_USES_UTF16_ \
679 : (GTEST_OS_WINDOWS || GTEST_OS_CYGWIN || GTEST_OS_SYMBIAN || GTEST_OS_AIX)
680 :
681 : // Determines whether test results can be streamed to a socket.
682 : #if GTEST_OS_LINUX
683 : # define GTEST_CAN_STREAM_RESULTS_ 1
684 : #endif
685 :
686 : // Defines some utility macros.
687 :
688 : // The GNU compiler emits a warning if nested "if" statements are followed by
689 : // an "else" statement and braces are not used to explicitly disambiguate the
690 : // "else" binding. This leads to problems with code like:
691 : //
692 : // if (gate)
693 : // ASSERT_*(condition) << "Some message";
694 : //
695 : // The "switch (0) case 0:" idiom is used to suppress this.
696 : #ifdef __INTEL_COMPILER
697 : # define GTEST_AMBIGUOUS_ELSE_BLOCKER_
698 : #else
699 : # define GTEST_AMBIGUOUS_ELSE_BLOCKER_ switch (0) case 0: default: // NOLINT
700 : #endif
701 :
702 : // Use this annotation at the end of a struct/class definition to
703 : // prevent the compiler from optimizing away instances that are never
704 : // used. This is useful when all interesting logic happens inside the
705 : // c'tor and / or d'tor. Example:
706 : //
707 : // struct Foo {
708 : // Foo() { ... }
709 : // } GTEST_ATTRIBUTE_UNUSED_;
710 : //
711 : // Also use it after a variable or parameter declaration to tell the
712 : // compiler the variable/parameter does not have to be used.
713 : #if defined(__GNUC__) && !defined(COMPILER_ICC)
714 : # define GTEST_ATTRIBUTE_UNUSED_ __attribute__ ((unused))
715 : #else
716 : # define GTEST_ATTRIBUTE_UNUSED_
717 : #endif
718 :
719 : // A macro to disallow operator=
720 : // This should be used in the private: declarations for a class.
721 : #define GTEST_DISALLOW_ASSIGN_(type)\
722 : void operator=(type const &)
723 :
724 : // A macro to disallow copy constructor and operator=
725 : // This should be used in the private: declarations for a class.
726 : #define GTEST_DISALLOW_COPY_AND_ASSIGN_(type)\
727 : type(type const &);\
728 : GTEST_DISALLOW_ASSIGN_(type)
729 :
730 : // Tell the compiler to warn about unused return values for functions declared
731 : // with this macro. The macro should be used on function declarations
732 : // following the argument list:
733 : //
734 : // Sprocket* AllocateSprocket() GTEST_MUST_USE_RESULT_;
735 : #if defined(__GNUC__) && (GTEST_GCC_VER_ >= 30400) && !defined(COMPILER_ICC)
736 : # define GTEST_MUST_USE_RESULT_ __attribute__ ((warn_unused_result))
737 : #else
738 : # define GTEST_MUST_USE_RESULT_
739 : #endif // __GNUC__ && (GTEST_GCC_VER_ >= 30400) && !COMPILER_ICC
740 :
741 : // Determine whether the compiler supports Microsoft's Structured Exception
742 : // Handling. This is supported by several Windows compilers but generally
743 : // does not exist on any other system.
744 : #ifndef GTEST_HAS_SEH
745 : // The user didn't tell us, so we need to figure it out.
746 :
747 : # if defined(_MSC_VER) || defined(__BORLANDC__)
748 : // These two compilers are known to support SEH.
749 : # define GTEST_HAS_SEH 1
750 : # else
751 : // Assume no SEH.
752 : # define GTEST_HAS_SEH 0
753 : # endif
754 :
755 : #endif // GTEST_HAS_SEH
756 :
757 : #ifdef _MSC_VER
758 :
759 : # if GTEST_LINKED_AS_SHARED_LIBRARY
760 : # define GTEST_API_ __declspec(dllimport)
761 : # elif GTEST_CREATE_SHARED_LIBRARY
762 : # define GTEST_API_ __declspec(dllexport)
763 : # endif
764 :
765 : #endif // _MSC_VER
766 :
767 : #ifndef GTEST_API_
768 : # define GTEST_API_
769 : #endif
770 :
771 : #ifdef __GNUC__
772 : // Ask the compiler to never inline a given function.
773 : # define GTEST_NO_INLINE_ __attribute__((noinline))
774 : #else
775 : # define GTEST_NO_INLINE_
776 : #endif
777 :
778 : // _LIBCPP_VERSION is defined by the libc++ library from the LLVM project.
779 : #if defined(__GLIBCXX__) || defined(_LIBCPP_VERSION)
780 : # define GTEST_HAS_CXXABI_H_ 1
781 : #else
782 : # define GTEST_HAS_CXXABI_H_ 0
783 : #endif
784 :
785 : namespace testing {
786 :
787 : class Message;
788 :
789 : namespace internal {
790 :
791 : // A secret type that Google Test users don't know about. It has no
792 : // definition on purpose. Therefore it's impossible to create a
793 : // Secret object, which is what we want.
794 : class Secret;
795 :
796 : // The GTEST_COMPILE_ASSERT_ macro can be used to verify that a compile time
797 : // expression is true. For example, you could use it to verify the
798 : // size of a static array:
799 : //
800 : // GTEST_COMPILE_ASSERT_(ARRAYSIZE(content_type_names) == CONTENT_NUM_TYPES,
801 : // content_type_names_incorrect_size);
802 : //
803 : // or to make sure a struct is smaller than a certain size:
804 : //
805 : // GTEST_COMPILE_ASSERT_(sizeof(foo) < 128, foo_too_large);
806 : //
807 : // The second argument to the macro is the name of the variable. If
808 : // the expression is false, most compilers will issue a warning/error
809 : // containing the name of the variable.
810 :
811 : template <bool>
812 : struct CompileAssert {
813 : };
814 :
815 : #define GTEST_COMPILE_ASSERT_(expr, msg) \
816 : typedef ::testing::internal::CompileAssert<(static_cast<bool>(expr))> \
817 : msg[static_cast<bool>(expr) ? 1 : -1] GTEST_ATTRIBUTE_UNUSED_
818 :
819 : // Implementation details of GTEST_COMPILE_ASSERT_:
820 : //
821 : // - GTEST_COMPILE_ASSERT_ works by defining an array type that has -1
822 : // elements (and thus is invalid) when the expression is false.
823 : //
824 : // - The simpler definition
825 : //
826 : // #define GTEST_COMPILE_ASSERT_(expr, msg) typedef char msg[(expr) ? 1 : -1]
827 : //
828 : // does not work, as gcc supports variable-length arrays whose sizes
829 : // are determined at run-time (this is gcc's extension and not part
830 : // of the C++ standard). As a result, gcc fails to reject the
831 : // following code with the simple definition:
832 : //
833 : // int foo;
834 : // GTEST_COMPILE_ASSERT_(foo, msg); // not supposed to compile as foo is
835 : // // not a compile-time constant.
836 : //
837 : // - By using the type CompileAssert<(bool(expr))>, we ensures that
838 : // expr is a compile-time constant. (Template arguments must be
839 : // determined at compile-time.)
840 : //
841 : // - The outter parentheses in CompileAssert<(bool(expr))> are necessary
842 : // to work around a bug in gcc 3.4.4 and 4.0.1. If we had written
843 : //
844 : // CompileAssert<bool(expr)>
845 : //
846 : // instead, these compilers will refuse to compile
847 : //
848 : // GTEST_COMPILE_ASSERT_(5 > 0, some_message);
849 : //
850 : // (They seem to think the ">" in "5 > 0" marks the end of the
851 : // template argument list.)
852 : //
853 : // - The array size is (bool(expr) ? 1 : -1), instead of simply
854 : //
855 : // ((expr) ? 1 : -1).
856 : //
857 : // This is to avoid running into a bug in MS VC 7.1, which
858 : // causes ((0.0) ? 1 : -1) to incorrectly evaluate to 1.
859 :
860 : // StaticAssertTypeEqHelper is used by StaticAssertTypeEq defined in gtest.h.
861 : //
862 : // This template is declared, but intentionally undefined.
863 : template <typename T1, typename T2>
864 : struct StaticAssertTypeEqHelper;
865 :
866 : template <typename T>
867 : struct StaticAssertTypeEqHelper<T, T> {};
868 :
869 : #if GTEST_HAS_GLOBAL_STRING
870 : typedef ::string string;
871 : #else
872 : typedef ::std::string string;
873 : #endif // GTEST_HAS_GLOBAL_STRING
874 :
875 : #if GTEST_HAS_GLOBAL_WSTRING
876 : typedef ::wstring wstring;
877 : #elif GTEST_HAS_STD_WSTRING
878 : typedef ::std::wstring wstring;
879 : #endif // GTEST_HAS_GLOBAL_WSTRING
880 :
881 : // A helper for suppressing warnings on constant condition. It just
882 : // returns 'condition'.
883 : GTEST_API_ bool IsTrue(bool condition);
884 :
885 : // Defines scoped_ptr.
886 :
887 : // This implementation of scoped_ptr is PARTIAL - it only contains
888 : // enough stuff to satisfy Google Test's need.
889 : template <typename T>
890 : class scoped_ptr {
891 : public:
892 : typedef T element_type;
893 :
894 2757424 : explicit scoped_ptr(T* p = NULL) : ptr_(p) {}
895 3635112 : ~scoped_ptr() { reset(); }
896 :
897 2804 : T& operator*() const { return *ptr_; }
898 0 : T* operator->() const { return ptr_; }
899 0 : T* get() const { return ptr_; }
900 :
901 : T* release() {
902 : T* const ptr = ptr_;
903 : ptr_ = NULL;
904 : return ptr;
905 : }
906 :
907 3635112 : void reset(T* p = NULL) {
908 3635112 : if (p != ptr_) {
909 452 : if (IsTrue(sizeof(T) > 0)) { // Makes sure T is a complete type.
910 452 : delete ptr_;
911 : }
912 452 : ptr_ = p;
913 : }
914 3635112 : }
915 :
916 : private:
917 : T* ptr_;
918 :
919 : GTEST_DISALLOW_COPY_AND_ASSIGN_(scoped_ptr);
920 : };
921 :
922 : // Defines RE.
923 :
924 : // A simple C++ wrapper for <regex.h>. It uses the POSIX Extended
925 : // Regular Expression syntax.
926 : class GTEST_API_ RE {
927 : public:
928 : // A copy constructor is required by the Standard to initialize object
929 : // references from r-values.
930 : RE(const RE& other) { Init(other.pattern()); }
931 :
932 : // Constructs an RE from a string.
933 : RE(const ::std::string& regex) { Init(regex.c_str()); } // NOLINT
934 :
935 : #if GTEST_HAS_GLOBAL_STRING
936 :
937 : RE(const ::string& regex) { Init(regex.c_str()); } // NOLINT
938 :
939 : #endif // GTEST_HAS_GLOBAL_STRING
940 :
941 : RE(const char* regex) { Init(regex); } // NOLINT
942 : ~RE();
943 :
944 : // Returns the string representation of the regex.
945 : const char* pattern() const { return pattern_; }
946 :
947 : // FullMatch(str, re) returns true iff regular expression re matches
948 : // the entire str.
949 : // PartialMatch(str, re) returns true iff regular expression re
950 : // matches a substring of str (including str itself).
951 : //
952 : // TODO(wan@google.com): make FullMatch() and PartialMatch() work
953 : // when str contains NUL characters.
954 : static bool FullMatch(const ::std::string& str, const RE& re) {
955 : return FullMatch(str.c_str(), re);
956 : }
957 : static bool PartialMatch(const ::std::string& str, const RE& re) {
958 : return PartialMatch(str.c_str(), re);
959 : }
960 :
961 : #if GTEST_HAS_GLOBAL_STRING
962 :
963 : static bool FullMatch(const ::string& str, const RE& re) {
964 : return FullMatch(str.c_str(), re);
965 : }
966 : static bool PartialMatch(const ::string& str, const RE& re) {
967 : return PartialMatch(str.c_str(), re);
968 : }
969 :
970 : #endif // GTEST_HAS_GLOBAL_STRING
971 :
972 : static bool FullMatch(const char* str, const RE& re);
973 : static bool PartialMatch(const char* str, const RE& re);
974 :
975 : private:
976 : void Init(const char* regex);
977 :
978 : // We use a const char* instead of an std::string, as Google Test used to be
979 : // used where std::string is not available. TODO(wan@google.com): change to
980 : // std::string.
981 : const char* pattern_;
982 : bool is_valid_;
983 :
984 : #if GTEST_USES_POSIX_RE
985 :
986 : regex_t full_regex_; // For FullMatch().
987 : regex_t partial_regex_; // For PartialMatch().
988 :
989 : #else // GTEST_USES_SIMPLE_RE
990 :
991 : const char* full_pattern_; // For FullMatch();
992 :
993 : #endif
994 :
995 : GTEST_DISALLOW_ASSIGN_(RE);
996 : };
997 :
998 : // Formats a source file path and a line number as they would appear
999 : // in an error message from the compiler used to compile this code.
1000 : GTEST_API_ ::std::string FormatFileLocation(const char* file, int line);
1001 :
1002 : // Formats a file location for compiler-independent XML output.
1003 : // Although this function is not platform dependent, we put it next to
1004 : // FormatFileLocation in order to contrast the two functions.
1005 : GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(const char* file,
1006 : int line);
1007 :
1008 : // Defines logging utilities:
1009 : // GTEST_LOG_(severity) - logs messages at the specified severity level. The
1010 : // message itself is streamed into the macro.
1011 : // LogToStderr() - directs all log messages to stderr.
1012 : // FlushInfoLog() - flushes informational log messages.
1013 :
1014 : enum GTestLogSeverity {
1015 : GTEST_INFO,
1016 : GTEST_WARNING,
1017 : GTEST_ERROR,
1018 : GTEST_FATAL
1019 : };
1020 :
1021 : // Formats log entry severity, provides a stream object for streaming the
1022 : // log message, and terminates the message with a newline when going out of
1023 : // scope.
1024 : class GTEST_API_ GTestLog {
1025 : public:
1026 : GTestLog(GTestLogSeverity severity, const char* file, int line);
1027 :
1028 : // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
1029 : ~GTestLog();
1030 :
1031 0 : ::std::ostream& GetStream() { return ::std::cerr; }
1032 :
1033 : private:
1034 : const GTestLogSeverity severity_;
1035 :
1036 : GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestLog);
1037 : };
1038 :
1039 : #define GTEST_LOG_(severity) \
1040 : ::testing::internal::GTestLog(::testing::internal::GTEST_##severity, \
1041 : __FILE__, __LINE__).GetStream()
1042 :
1043 : inline void LogToStderr() {}
1044 : inline void FlushInfoLog() { fflush(NULL); }
1045 :
1046 : // INTERNAL IMPLEMENTATION - DO NOT USE.
1047 : //
1048 : // GTEST_CHECK_ is an all-mode assert. It aborts the program if the condition
1049 : // is not satisfied.
1050 : // Synopsys:
1051 : // GTEST_CHECK_(boolean_condition);
1052 : // or
1053 : // GTEST_CHECK_(boolean_condition) << "Additional message";
1054 : //
1055 : // This checks the condition and if the condition is not satisfied
1056 : // it prints message about the condition violation, including the
1057 : // condition itself, plus additional message streamed into it, if any,
1058 : // and then it aborts the program. It aborts the program irrespective of
1059 : // whether it is built in the debug mode or not.
1060 : #define GTEST_CHECK_(condition) \
1061 : GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
1062 : if (::testing::internal::IsTrue(condition)) \
1063 : ; \
1064 : else \
1065 : GTEST_LOG_(FATAL) << "Condition " #condition " failed. "
1066 :
1067 : // An all-mode assert to verify that the given POSIX-style function
1068 : // call returns 0 (indicating success). Known limitation: this
1069 : // doesn't expand to a balanced 'if' statement, so enclose the macro
1070 : // in {} if you need to use it as the only statement in an 'if'
1071 : // branch.
1072 : #define GTEST_CHECK_POSIX_SUCCESS_(posix_call) \
1073 : if (const int gtest_error = (posix_call)) \
1074 : GTEST_LOG_(FATAL) << #posix_call << "failed with error " \
1075 : << gtest_error
1076 :
1077 : // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
1078 : //
1079 : // Use ImplicitCast_ as a safe version of static_cast for upcasting in
1080 : // the type hierarchy (e.g. casting a Foo* to a SuperclassOfFoo* or a
1081 : // const Foo*). When you use ImplicitCast_, the compiler checks that
1082 : // the cast is safe. Such explicit ImplicitCast_s are necessary in
1083 : // surprisingly many situations where C++ demands an exact type match
1084 : // instead of an argument type convertable to a target type.
1085 : //
1086 : // The syntax for using ImplicitCast_ is the same as for static_cast:
1087 : //
1088 : // ImplicitCast_<ToType>(expr)
1089 : //
1090 : // ImplicitCast_ would have been part of the C++ standard library,
1091 : // but the proposal was submitted too late. It will probably make
1092 : // its way into the language in the future.
1093 : //
1094 : // This relatively ugly name is intentional. It prevents clashes with
1095 : // similar functions users may have (e.g., implicit_cast). The internal
1096 : // namespace alone is not enough because the function can be found by ADL.
1097 : template<typename To>
1098 : inline To ImplicitCast_(To x) { return x; }
1099 :
1100 : // When you upcast (that is, cast a pointer from type Foo to type
1101 : // SuperclassOfFoo), it's fine to use ImplicitCast_<>, since upcasts
1102 : // always succeed. When you downcast (that is, cast a pointer from
1103 : // type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
1104 : // how do you know the pointer is really of type SubclassOfFoo? It
1105 : // could be a bare Foo, or of type DifferentSubclassOfFoo. Thus,
1106 : // when you downcast, you should use this macro. In debug mode, we
1107 : // use dynamic_cast<> to double-check the downcast is legal (we die
1108 : // if it's not). In normal mode, we do the efficient static_cast<>
1109 : // instead. Thus, it's important to test in debug mode to make sure
1110 : // the cast is legal!
1111 : // This is the only place in the code we should use dynamic_cast<>.
1112 : // In particular, you SHOULDN'T be using dynamic_cast<> in order to
1113 : // do RTTI (eg code like this:
1114 : // if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
1115 : // if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
1116 : // You should design the code some other way not to need this.
1117 : //
1118 : // This relatively ugly name is intentional. It prevents clashes with
1119 : // similar functions users may have (e.g., down_cast). The internal
1120 : // namespace alone is not enough because the function can be found by ADL.
1121 : template<typename To, typename From> // use like this: DownCast_<T*>(foo);
1122 : inline To DownCast_(From* f) { // so we only accept pointers
1123 : // Ensures that To is a sub-type of From *. This test is here only
1124 : // for compile-time type checking, and has no overhead in an
1125 : // optimized build at run-time, as it will be optimized away
1126 : // completely.
1127 : if (false) {
1128 : const To to = NULL;
1129 : ::testing::internal::ImplicitCast_<From*>(to);
1130 : }
1131 :
1132 : #if GTEST_HAS_RTTI
1133 : // RTTI: debug mode only!
1134 : GTEST_CHECK_(f == NULL || dynamic_cast<To>(f) != NULL);
1135 : #endif
1136 : return static_cast<To>(f);
1137 : }
1138 :
1139 : // Downcasts the pointer of type Base to Derived.
1140 : // Derived must be a subclass of Base. The parameter MUST
1141 : // point to a class of type Derived, not any subclass of it.
1142 : // When RTTI is available, the function performs a runtime
1143 : // check to enforce this.
1144 : template <class Derived, class Base>
1145 0 : Derived* CheckedDowncastToActualType(Base* base) {
1146 : #if GTEST_HAS_RTTI
1147 0 : GTEST_CHECK_(typeid(*base) == typeid(Derived));
1148 0 : return dynamic_cast<Derived*>(base); // NOLINT
1149 : #else
1150 : return static_cast<Derived*>(base); // Poor man's downcast.
1151 : #endif
1152 : }
1153 :
1154 : #if GTEST_HAS_STREAM_REDIRECTION
1155 :
1156 : // Defines the stderr capturer:
1157 : // CaptureStdout - starts capturing stdout.
1158 : // GetCapturedStdout - stops capturing stdout and returns the captured string.
1159 : // CaptureStderr - starts capturing stderr.
1160 : // GetCapturedStderr - stops capturing stderr and returns the captured string.
1161 : //
1162 : GTEST_API_ void CaptureStdout();
1163 : GTEST_API_ std::string GetCapturedStdout();
1164 : GTEST_API_ void CaptureStderr();
1165 : GTEST_API_ std::string GetCapturedStderr();
1166 :
1167 : #endif // GTEST_HAS_STREAM_REDIRECTION
1168 :
1169 :
1170 : #if GTEST_HAS_DEATH_TEST
1171 :
1172 : const ::std::vector<testing::internal::string>& GetInjectableArgvs();
1173 : void SetInjectableArgvs(const ::std::vector<testing::internal::string>*
1174 : new_argvs);
1175 :
1176 : // A copy of all command line arguments. Set by InitGoogleTest().
1177 : extern ::std::vector<testing::internal::string> g_argvs;
1178 :
1179 : #endif // GTEST_HAS_DEATH_TEST
1180 :
1181 : // Defines synchronization primitives.
1182 :
1183 : #if GTEST_HAS_PTHREAD
1184 :
1185 : // Sleeps for (roughly) n milli-seconds. This function is only for
1186 : // testing Google Test's own constructs. Don't use it in user tests,
1187 : // either directly or indirectly.
1188 : inline void SleepMilliseconds(int n) {
1189 : const timespec time = {
1190 : 0, // 0 seconds.
1191 : n * 1000L * 1000L, // And n ms.
1192 : };
1193 : nanosleep(&time, NULL);
1194 : }
1195 :
1196 : // Allows a controller thread to pause execution of newly created
1197 : // threads until notified. Instances of this class must be created
1198 : // and destroyed in the controller thread.
1199 : //
1200 : // This class is only for testing Google Test's own constructs. Do not
1201 : // use it in user tests, either directly or indirectly.
1202 : class Notification {
1203 : public:
1204 : Notification() : notified_(false) {
1205 : GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL));
1206 : }
1207 : ~Notification() {
1208 : pthread_mutex_destroy(&mutex_);
1209 : }
1210 :
1211 : // Notifies all threads created with this notification to start. Must
1212 : // be called from the controller thread.
1213 : void Notify() {
1214 : pthread_mutex_lock(&mutex_);
1215 : notified_ = true;
1216 : pthread_mutex_unlock(&mutex_);
1217 : }
1218 :
1219 : // Blocks until the controller thread notifies. Must be called from a test
1220 : // thread.
1221 : void WaitForNotification() {
1222 : for (;;) {
1223 : pthread_mutex_lock(&mutex_);
1224 : const bool notified = notified_;
1225 : pthread_mutex_unlock(&mutex_);
1226 : if (notified)
1227 : break;
1228 : SleepMilliseconds(10);
1229 : }
1230 : }
1231 :
1232 : private:
1233 : pthread_mutex_t mutex_;
1234 : bool notified_;
1235 :
1236 : GTEST_DISALLOW_COPY_AND_ASSIGN_(Notification);
1237 : };
1238 :
1239 : // As a C-function, ThreadFuncWithCLinkage cannot be templated itself.
1240 : // Consequently, it cannot select a correct instantiation of ThreadWithParam
1241 : // in order to call its Run(). Introducing ThreadWithParamBase as a
1242 : // non-templated base class for ThreadWithParam allows us to bypass this
1243 : // problem.
1244 : class ThreadWithParamBase {
1245 : public:
1246 0 : virtual ~ThreadWithParamBase() {}
1247 : virtual void Run() = 0;
1248 : };
1249 :
1250 : // pthread_create() accepts a pointer to a function type with the C linkage.
1251 : // According to the Standard (7.5/1), function types with different linkages
1252 : // are different even if they are otherwise identical. Some compilers (for
1253 : // example, SunStudio) treat them as different types. Since class methods
1254 : // cannot be defined with C-linkage we need to define a free C-function to
1255 : // pass into pthread_create().
1256 : extern "C" inline void* ThreadFuncWithCLinkage(void* thread) {
1257 : static_cast<ThreadWithParamBase*>(thread)->Run();
1258 : return NULL;
1259 : }
1260 :
1261 : // Helper class for testing Google Test's multi-threading constructs.
1262 : // To use it, write:
1263 : //
1264 : // void ThreadFunc(int param) { /* Do things with param */ }
1265 : // Notification thread_can_start;
1266 : // ...
1267 : // // The thread_can_start parameter is optional; you can supply NULL.
1268 : // ThreadWithParam<int> thread(&ThreadFunc, 5, &thread_can_start);
1269 : // thread_can_start.Notify();
1270 : //
1271 : // These classes are only for testing Google Test's own constructs. Do
1272 : // not use them in user tests, either directly or indirectly.
1273 : template <typename T>
1274 : class ThreadWithParam : public ThreadWithParamBase {
1275 : public:
1276 : typedef void (*UserThreadFunc)(T);
1277 :
1278 : ThreadWithParam(
1279 : UserThreadFunc func, T param, Notification* thread_can_start)
1280 : : func_(func),
1281 : param_(param),
1282 : thread_can_start_(thread_can_start),
1283 : finished_(false) {
1284 : ThreadWithParamBase* const base = this;
1285 : // The thread can be created only after all fields except thread_
1286 : // have been initialized.
1287 : GTEST_CHECK_POSIX_SUCCESS_(
1288 : pthread_create(&thread_, 0, &ThreadFuncWithCLinkage, base));
1289 : }
1290 : ~ThreadWithParam() { Join(); }
1291 :
1292 : void Join() {
1293 : if (!finished_) {
1294 : GTEST_CHECK_POSIX_SUCCESS_(pthread_join(thread_, 0));
1295 : finished_ = true;
1296 : }
1297 : }
1298 :
1299 : virtual void Run() {
1300 : if (thread_can_start_ != NULL)
1301 : thread_can_start_->WaitForNotification();
1302 : func_(param_);
1303 : }
1304 :
1305 : private:
1306 : const UserThreadFunc func_; // User-supplied thread function.
1307 : const T param_; // User-supplied parameter to the thread function.
1308 : // When non-NULL, used to block execution until the controller thread
1309 : // notifies.
1310 : Notification* const thread_can_start_;
1311 : bool finished_; // true iff we know that the thread function has finished.
1312 : pthread_t thread_; // The native thread object.
1313 :
1314 : GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadWithParam);
1315 : };
1316 :
1317 : // MutexBase and Mutex implement mutex on pthreads-based platforms. They
1318 : // are used in conjunction with class MutexLock:
1319 : //
1320 : // Mutex mutex;
1321 : // ...
1322 : // MutexLock lock(&mutex); // Acquires the mutex and releases it at the end
1323 : // // of the current scope.
1324 : //
1325 : // MutexBase implements behavior for both statically and dynamically
1326 : // allocated mutexes. Do not use MutexBase directly. Instead, write
1327 : // the following to define a static mutex:
1328 : //
1329 : // GTEST_DEFINE_STATIC_MUTEX_(g_some_mutex);
1330 : //
1331 : // You can forward declare a static mutex like this:
1332 : //
1333 : // GTEST_DECLARE_STATIC_MUTEX_(g_some_mutex);
1334 : //
1335 : // To create a dynamic mutex, just define an object of type Mutex.
1336 : class MutexBase {
1337 : public:
1338 : // Acquires this mutex.
1339 : void Lock() {
1340 : GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&mutex_));
1341 : owner_ = pthread_self();
1342 : has_owner_ = true;
1343 : }
1344 :
1345 : // Releases this mutex.
1346 : void Unlock() {
1347 : // Since the lock is being released the owner_ field should no longer be
1348 : // considered valid. We don't protect writing to has_owner_ here, as it's
1349 : // the caller's responsibility to ensure that the current thread holds the
1350 : // mutex when this is called.
1351 : has_owner_ = false;
1352 : GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&mutex_));
1353 : }
1354 :
1355 : // Does nothing if the current thread holds the mutex. Otherwise, crashes
1356 : // with high probability.
1357 : void AssertHeld() const {
1358 : GTEST_CHECK_(has_owner_ && pthread_equal(owner_, pthread_self()))
1359 : << "The current thread is not holding the mutex @" << this;
1360 : }
1361 :
1362 : // A static mutex may be used before main() is entered. It may even
1363 : // be used before the dynamic initialization stage. Therefore we
1364 : // must be able to initialize a static mutex object at link time.
1365 : // This means MutexBase has to be a POD and its member variables
1366 : // have to be public.
1367 : public:
1368 : pthread_mutex_t mutex_; // The underlying pthread mutex.
1369 : // has_owner_ indicates whether the owner_ field below contains a valid thread
1370 : // ID and is therefore safe to inspect (e.g., to use in pthread_equal()). All
1371 : // accesses to the owner_ field should be protected by a check of this field.
1372 : // An alternative might be to memset() owner_ to all zeros, but there's no
1373 : // guarantee that a zero'd pthread_t is necessarily invalid or even different
1374 : // from pthread_self().
1375 : bool has_owner_;
1376 : pthread_t owner_; // The thread holding the mutex.
1377 : };
1378 :
1379 : // Forward-declares a static mutex.
1380 : # define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
1381 : extern ::testing::internal::MutexBase mutex
1382 :
1383 : // Defines and statically (i.e. at link time) initializes a static mutex.
1384 : // The initialization list here does not explicitly initialize each field,
1385 : // instead relying on default initialization for the unspecified fields. In
1386 : // particular, the owner_ field (a pthread_t) is not explicitly initialized.
1387 : // This allows initialization to work whether pthread_t is a scalar or struct.
1388 : // The flag -Wmissing-field-initializers must not be specified for this to work.
1389 : # define GTEST_DEFINE_STATIC_MUTEX_(mutex) \
1390 : ::testing::internal::MutexBase mutex = { PTHREAD_MUTEX_INITIALIZER, false }
1391 :
1392 : // The Mutex class can only be used for mutexes created at runtime. It
1393 : // shares its API with MutexBase otherwise.
1394 : class Mutex : public MutexBase {
1395 : public:
1396 : Mutex() {
1397 : GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL));
1398 : has_owner_ = false;
1399 : }
1400 : ~Mutex() {
1401 : GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&mutex_));
1402 : }
1403 :
1404 : private:
1405 : GTEST_DISALLOW_COPY_AND_ASSIGN_(Mutex);
1406 : };
1407 :
1408 : // We cannot name this class MutexLock as the ctor declaration would
1409 : // conflict with a macro named MutexLock, which is defined on some
1410 : // platforms. Hence the typedef trick below.
1411 : class GTestMutexLock {
1412 : public:
1413 : explicit GTestMutexLock(MutexBase* mutex)
1414 : : mutex_(mutex) { mutex_->Lock(); }
1415 :
1416 : ~GTestMutexLock() { mutex_->Unlock(); }
1417 :
1418 : private:
1419 : MutexBase* const mutex_;
1420 :
1421 : GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestMutexLock);
1422 : };
1423 :
1424 : typedef GTestMutexLock MutexLock;
1425 :
1426 : // Helpers for ThreadLocal.
1427 :
1428 : // pthread_key_create() requires DeleteThreadLocalValue() to have
1429 : // C-linkage. Therefore it cannot be templatized to access
1430 : // ThreadLocal<T>. Hence the need for class
1431 : // ThreadLocalValueHolderBase.
1432 : class ThreadLocalValueHolderBase {
1433 : public:
1434 0 : virtual ~ThreadLocalValueHolderBase() {}
1435 : };
1436 :
1437 : // Called by pthread to delete thread-local data stored by
1438 : // pthread_setspecific().
1439 : extern "C" inline void DeleteThreadLocalValue(void* value_holder) {
1440 : delete static_cast<ThreadLocalValueHolderBase*>(value_holder);
1441 : }
1442 :
1443 : // Implements thread-local storage on pthreads-based systems.
1444 : //
1445 : // // Thread 1
1446 : // ThreadLocal<int> tl(100); // 100 is the default value for each thread.
1447 : //
1448 : // // Thread 2
1449 : // tl.set(150); // Changes the value for thread 2 only.
1450 : // EXPECT_EQ(150, tl.get());
1451 : //
1452 : // // Thread 1
1453 : // EXPECT_EQ(100, tl.get()); // In thread 1, tl has the original value.
1454 : // tl.set(200);
1455 : // EXPECT_EQ(200, tl.get());
1456 : //
1457 : // The template type argument T must have a public copy constructor.
1458 : // In addition, the default ThreadLocal constructor requires T to have
1459 : // a public default constructor.
1460 : //
1461 : // An object managed for a thread by a ThreadLocal instance is deleted
1462 : // when the thread exits. Or, if the ThreadLocal instance dies in
1463 : // that thread, when the ThreadLocal dies. It's the user's
1464 : // responsibility to ensure that all other threads using a ThreadLocal
1465 : // have exited when it dies, or the per-thread objects for those
1466 : // threads will not be deleted.
1467 : //
1468 : // Google Test only uses global ThreadLocal objects. That means they
1469 : // will die after main() has returned. Therefore, no per-thread
1470 : // object managed by Google Test will be leaked as long as all threads
1471 : // using Google Test have exited when main() returns.
1472 : template <typename T>
1473 : class ThreadLocal {
1474 : public:
1475 : ThreadLocal() : key_(CreateKey()),
1476 : default_() {}
1477 : explicit ThreadLocal(const T& value) : key_(CreateKey()),
1478 : default_(value) {}
1479 :
1480 : ~ThreadLocal() {
1481 : // Destroys the managed object for the current thread, if any.
1482 : DeleteThreadLocalValue(pthread_getspecific(key_));
1483 :
1484 : // Releases resources associated with the key. This will *not*
1485 : // delete managed objects for other threads.
1486 : GTEST_CHECK_POSIX_SUCCESS_(pthread_key_delete(key_));
1487 : }
1488 :
1489 : T* pointer() { return GetOrCreateValue(); }
1490 : const T* pointer() const { return GetOrCreateValue(); }
1491 : const T& get() const { return *pointer(); }
1492 : void set(const T& value) { *pointer() = value; }
1493 :
1494 : private:
1495 : // Holds a value of type T.
1496 : class ValueHolder : public ThreadLocalValueHolderBase {
1497 : public:
1498 : explicit ValueHolder(const T& value) : value_(value) {}
1499 :
1500 : T* pointer() { return &value_; }
1501 :
1502 : private:
1503 : T value_;
1504 : GTEST_DISALLOW_COPY_AND_ASSIGN_(ValueHolder);
1505 : };
1506 :
1507 : static pthread_key_t CreateKey() {
1508 : pthread_key_t key;
1509 : // When a thread exits, DeleteThreadLocalValue() will be called on
1510 : // the object managed for that thread.
1511 : GTEST_CHECK_POSIX_SUCCESS_(
1512 : pthread_key_create(&key, &DeleteThreadLocalValue));
1513 : return key;
1514 : }
1515 :
1516 : T* GetOrCreateValue() const {
1517 : ThreadLocalValueHolderBase* const holder =
1518 : static_cast<ThreadLocalValueHolderBase*>(pthread_getspecific(key_));
1519 : if (holder != NULL) {
1520 : return CheckedDowncastToActualType<ValueHolder>(holder)->pointer();
1521 : }
1522 :
1523 : ValueHolder* const new_holder = new ValueHolder(default_);
1524 : ThreadLocalValueHolderBase* const holder_base = new_holder;
1525 : GTEST_CHECK_POSIX_SUCCESS_(pthread_setspecific(key_, holder_base));
1526 : return new_holder->pointer();
1527 : }
1528 :
1529 : // A key pthreads uses for looking up per-thread values.
1530 : const pthread_key_t key_;
1531 : const T default_; // The default value for each thread.
1532 :
1533 : GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadLocal);
1534 : };
1535 :
1536 : # define GTEST_IS_THREADSAFE 1
1537 :
1538 : #else // GTEST_HAS_PTHREAD
1539 :
1540 : // A dummy implementation of synchronization primitives (mutex, lock,
1541 : // and thread-local variable). Necessary for compiling Google Test where
1542 : // mutex is not supported - using Google Test in multiple threads is not
1543 : // supported on such platforms.
1544 :
1545 : class Mutex {
1546 : public:
1547 : Mutex() {}
1548 : void Lock() {}
1549 : void Unlock() {}
1550 : void AssertHeld() const {}
1551 : };
1552 :
1553 : # define GTEST_DECLARE_STATIC_MUTEX_(mutex) \
1554 : extern ::testing::internal::Mutex mutex
1555 :
1556 : # define GTEST_DEFINE_STATIC_MUTEX_(mutex) ::testing::internal::Mutex mutex
1557 :
1558 : class GTestMutexLock {
1559 : public:
1560 : explicit GTestMutexLock(Mutex*) {} // NOLINT
1561 : };
1562 :
1563 : typedef GTestMutexLock MutexLock;
1564 :
1565 : template <typename T>
1566 : class ThreadLocal {
1567 : public:
1568 : ThreadLocal() : value_() {}
1569 : explicit ThreadLocal(const T& value) : value_(value) {}
1570 : T* pointer() { return &value_; }
1571 : const T* pointer() const { return &value_; }
1572 : const T& get() const { return value_; }
1573 : void set(const T& value) { value_ = value; }
1574 : private:
1575 : T value_;
1576 : };
1577 :
1578 : // The above synchronization primitives have dummy implementations.
1579 : // Therefore Google Test is not thread-safe.
1580 : # define GTEST_IS_THREADSAFE 0
1581 :
1582 : #endif // GTEST_HAS_PTHREAD
1583 :
1584 : // Returns the number of threads running in the process, or 0 to indicate that
1585 : // we cannot detect it.
1586 : GTEST_API_ size_t GetThreadCount();
1587 :
1588 : // Passing non-POD classes through ellipsis (...) crashes the ARM
1589 : // compiler and generates a warning in Sun Studio. The Nokia Symbian
1590 : // and the IBM XL C/C++ compiler try to instantiate a copy constructor
1591 : // for objects passed through ellipsis (...), failing for uncopyable
1592 : // objects. We define this to ensure that only POD is passed through
1593 : // ellipsis on these systems.
1594 : #if defined(__SYMBIAN32__) || defined(__IBMCPP__) || defined(__SUNPRO_CC)
1595 : // We lose support for NULL detection where the compiler doesn't like
1596 : // passing non-POD classes through ellipsis (...).
1597 : # define GTEST_ELLIPSIS_NEEDS_POD_ 1
1598 : #else
1599 : # define GTEST_CAN_COMPARE_NULL 1
1600 : #endif
1601 :
1602 : // The Nokia Symbian and IBM XL C/C++ compilers cannot decide between
1603 : // const T& and const T* in a function template. These compilers
1604 : // _can_ decide between class template specializations for T and T*,
1605 : // so a tr1::type_traits-like is_pointer works.
1606 : #if defined(__SYMBIAN32__) || defined(__IBMCPP__)
1607 : # define GTEST_NEEDS_IS_POINTER_ 1
1608 : #endif
1609 :
1610 : template <bool bool_value>
1611 : struct bool_constant {
1612 : typedef bool_constant<bool_value> type;
1613 : static const bool value = bool_value;
1614 : };
1615 : template <bool bool_value> const bool bool_constant<bool_value>::value;
1616 :
1617 : typedef bool_constant<false> false_type;
1618 : typedef bool_constant<true> true_type;
1619 :
1620 : template <typename T>
1621 : struct is_pointer : public false_type {};
1622 :
1623 : template <typename T>
1624 : struct is_pointer<T*> : public true_type {};
1625 :
1626 : template <typename Iterator>
1627 : struct IteratorTraits {
1628 : typedef typename Iterator::value_type value_type;
1629 : };
1630 :
1631 : template <typename T>
1632 : struct IteratorTraits<T*> {
1633 : typedef T value_type;
1634 : };
1635 :
1636 : template <typename T>
1637 : struct IteratorTraits<const T*> {
1638 : typedef T value_type;
1639 : };
1640 :
1641 : #if GTEST_OS_WINDOWS
1642 : # define GTEST_PATH_SEP_ "\\"
1643 : # define GTEST_HAS_ALT_PATH_SEP_ 1
1644 : // The biggest signed integer type the compiler supports.
1645 : typedef __int64 BiggestInt;
1646 : #else
1647 : # define GTEST_PATH_SEP_ "/"
1648 : # define GTEST_HAS_ALT_PATH_SEP_ 0
1649 : typedef long long BiggestInt; // NOLINT
1650 : #endif // GTEST_OS_WINDOWS
1651 :
1652 : // Utilities for char.
1653 :
1654 : // isspace(int ch) and friends accept an unsigned char or EOF. char
1655 : // may be signed, depending on the compiler (or compiler flags).
1656 : // Therefore we need to cast a char to unsigned char before calling
1657 : // isspace(), etc.
1658 :
1659 : inline bool IsAlpha(char ch) {
1660 : return isalpha(static_cast<unsigned char>(ch)) != 0;
1661 : }
1662 : inline bool IsAlNum(char ch) {
1663 : return isalnum(static_cast<unsigned char>(ch)) != 0;
1664 : }
1665 : inline bool IsDigit(char ch) {
1666 : return isdigit(static_cast<unsigned char>(ch)) != 0;
1667 : }
1668 : inline bool IsLower(char ch) {
1669 : return islower(static_cast<unsigned char>(ch)) != 0;
1670 : }
1671 : inline bool IsSpace(char ch) {
1672 : return isspace(static_cast<unsigned char>(ch)) != 0;
1673 : }
1674 : inline bool IsUpper(char ch) {
1675 : return isupper(static_cast<unsigned char>(ch)) != 0;
1676 : }
1677 : inline bool IsXDigit(char ch) {
1678 : return isxdigit(static_cast<unsigned char>(ch)) != 0;
1679 : }
1680 : inline bool IsXDigit(wchar_t ch) {
1681 : const unsigned char low_byte = static_cast<unsigned char>(ch);
1682 : return ch == low_byte && isxdigit(low_byte) != 0;
1683 : }
1684 :
1685 : inline char ToLower(char ch) {
1686 : return static_cast<char>(tolower(static_cast<unsigned char>(ch)));
1687 : }
1688 : inline char ToUpper(char ch) {
1689 : return static_cast<char>(toupper(static_cast<unsigned char>(ch)));
1690 : }
1691 :
1692 : // The testing::internal::posix namespace holds wrappers for common
1693 : // POSIX functions. These wrappers hide the differences between
1694 : // Windows/MSVC and POSIX systems. Since some compilers define these
1695 : // standard functions as macros, the wrapper cannot have the same name
1696 : // as the wrapped function.
1697 :
1698 : namespace posix {
1699 :
1700 : // Functions with a different name on Windows.
1701 :
1702 : #if GTEST_OS_WINDOWS
1703 :
1704 : typedef struct _stat StatStruct;
1705 :
1706 : # ifdef __BORLANDC__
1707 : inline int IsATTY(int fd) { return isatty(fd); }
1708 : inline int StrCaseCmp(const char* s1, const char* s2) {
1709 : return stricmp(s1, s2);
1710 : }
1711 : inline char* StrDup(const char* src) { return strdup(src); }
1712 : # else // !__BORLANDC__
1713 : # if GTEST_OS_WINDOWS_MOBILE
1714 : inline int IsATTY(int /* fd */) { return 0; }
1715 : # else
1716 : inline int IsATTY(int fd) { return _isatty(fd); }
1717 : # endif // GTEST_OS_WINDOWS_MOBILE
1718 : inline int StrCaseCmp(const char* s1, const char* s2) {
1719 : return _stricmp(s1, s2);
1720 : }
1721 : inline char* StrDup(const char* src) { return _strdup(src); }
1722 : # endif // __BORLANDC__
1723 :
1724 : # if GTEST_OS_WINDOWS_MOBILE
1725 : inline int FileNo(FILE* file) { return reinterpret_cast<int>(_fileno(file)); }
1726 : // Stat(), RmDir(), and IsDir() are not needed on Windows CE at this
1727 : // time and thus not defined there.
1728 : # else
1729 : inline int FileNo(FILE* file) { return _fileno(file); }
1730 : inline int Stat(const char* path, StatStruct* buf) { return _stat(path, buf); }
1731 : inline int RmDir(const char* dir) { return _rmdir(dir); }
1732 : inline bool IsDir(const StatStruct& st) {
1733 : return (_S_IFDIR & st.st_mode) != 0;
1734 : }
1735 : # endif // GTEST_OS_WINDOWS_MOBILE
1736 :
1737 : #else
1738 :
1739 : typedef struct stat StatStruct;
1740 :
1741 : inline int FileNo(FILE* file) { return fileno(file); }
1742 : inline int IsATTY(int fd) { return isatty(fd); }
1743 : inline int Stat(const char* path, StatStruct* buf) { return stat(path, buf); }
1744 : inline int StrCaseCmp(const char* s1, const char* s2) {
1745 : return strcasecmp(s1, s2);
1746 : }
1747 : inline char* StrDup(const char* src) { return strdup(src); }
1748 : inline int RmDir(const char* dir) { return rmdir(dir); }
1749 : inline bool IsDir(const StatStruct& st) { return S_ISDIR(st.st_mode); }
1750 :
1751 : #endif // GTEST_OS_WINDOWS
1752 :
1753 : // Functions deprecated by MSVC 8.0.
1754 :
1755 : #ifdef _MSC_VER
1756 : // Temporarily disable warning 4996 (deprecated function).
1757 : # pragma warning(push)
1758 : # pragma warning(disable:4996)
1759 : #endif
1760 :
1761 : inline const char* StrNCpy(char* dest, const char* src, size_t n) {
1762 : return strncpy(dest, src, n);
1763 : }
1764 :
1765 : // ChDir(), FReopen(), FDOpen(), Read(), Write(), Close(), and
1766 : // StrError() aren't needed on Windows CE at this time and thus not
1767 : // defined there.
1768 :
1769 : #if !GTEST_OS_WINDOWS_MOBILE
1770 : inline int ChDir(const char* dir) { return chdir(dir); }
1771 : #endif
1772 : inline FILE* FOpen(const char* path, const char* mode) {
1773 : return fopen(path, mode);
1774 : }
1775 : #if !GTEST_OS_WINDOWS_MOBILE
1776 : inline FILE *FReopen(const char* path, const char* mode, FILE* stream) {
1777 : return freopen(path, mode, stream);
1778 : }
1779 : inline FILE* FDOpen(int fd, const char* mode) { return fdopen(fd, mode); }
1780 : #endif
1781 : inline int FClose(FILE* fp) { return fclose(fp); }
1782 : #if !GTEST_OS_WINDOWS_MOBILE
1783 : inline int Read(int fd, void* buf, unsigned int count) {
1784 : return static_cast<int>(read(fd, buf, count));
1785 : }
1786 : inline int Write(int fd, const void* buf, unsigned int count) {
1787 : return static_cast<int>(write(fd, buf, count));
1788 : }
1789 : inline int Close(int fd) { return close(fd); }
1790 : inline const char* StrError(int errnum) { return strerror(errnum); }
1791 : #endif
1792 : inline const char* GetEnv(const char* name) {
1793 : #if GTEST_OS_WINDOWS_MOBILE
1794 : // We are on Windows CE, which has no environment variables.
1795 : return NULL;
1796 : #elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
1797 : // Environment variables which we programmatically clear will be set to the
1798 : // empty string rather than unset (NULL). Handle that case.
1799 : const char* const env = getenv(name);
1800 : return (env != NULL && env[0] != '\0') ? env : NULL;
1801 : #else
1802 : return getenv(name);
1803 : #endif
1804 : }
1805 :
1806 : #ifdef _MSC_VER
1807 : # pragma warning(pop) // Restores the warning state.
1808 : #endif
1809 :
1810 : #if GTEST_OS_WINDOWS_MOBILE
1811 : // Windows CE has no C library. The abort() function is used in
1812 : // several places in Google Test. This implementation provides a reasonable
1813 : // imitation of standard behaviour.
1814 : void Abort();
1815 : #else
1816 : inline void Abort() { abort(); }
1817 : #endif // GTEST_OS_WINDOWS_MOBILE
1818 :
1819 : } // namespace posix
1820 :
1821 : // MSVC "deprecates" snprintf and issues warnings wherever it is used. In
1822 : // order to avoid these warnings, we need to use _snprintf or _snprintf_s on
1823 : // MSVC-based platforms. We map the GTEST_SNPRINTF_ macro to the appropriate
1824 : // function in order to achieve that. We use macro definition here because
1825 : // snprintf is a variadic function.
1826 : #if _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE
1827 : // MSVC 2005 and above support variadic macros.
1828 : # define GTEST_SNPRINTF_(buffer, size, format, ...) \
1829 : _snprintf_s(buffer, size, size, format, __VA_ARGS__)
1830 : #elif defined(_MSC_VER)
1831 : // Windows CE does not define _snprintf_s and MSVC prior to 2005 doesn't
1832 : // complain about _snprintf.
1833 : # define GTEST_SNPRINTF_ _snprintf
1834 : #else
1835 : # define GTEST_SNPRINTF_ snprintf
1836 : #endif
1837 :
1838 : // The maximum number a BiggestInt can represent. This definition
1839 : // works no matter BiggestInt is represented in one's complement or
1840 : // two's complement.
1841 : //
1842 : // We cannot rely on numeric_limits in STL, as __int64 and long long
1843 : // are not part of standard C++ and numeric_limits doesn't need to be
1844 : // defined for them.
1845 : const BiggestInt kMaxBiggestInt =
1846 : ~(static_cast<BiggestInt>(1) << (8*sizeof(BiggestInt) - 1));
1847 :
1848 : // This template class serves as a compile-time function from size to
1849 : // type. It maps a size in bytes to a primitive type with that
1850 : // size. e.g.
1851 : //
1852 : // TypeWithSize<4>::UInt
1853 : //
1854 : // is typedef-ed to be unsigned int (unsigned integer made up of 4
1855 : // bytes).
1856 : //
1857 : // Such functionality should belong to STL, but I cannot find it
1858 : // there.
1859 : //
1860 : // Google Test uses this class in the implementation of floating-point
1861 : // comparison.
1862 : //
1863 : // For now it only handles UInt (unsigned int) as that's all Google Test
1864 : // needs. Other types can be easily added in the future if need
1865 : // arises.
1866 : template <size_t size>
1867 : class TypeWithSize {
1868 : public:
1869 : // This prevents the user from using TypeWithSize<N> with incorrect
1870 : // values of N.
1871 : typedef void UInt;
1872 : };
1873 :
1874 : // The specialization for size 4.
1875 : template <>
1876 : class TypeWithSize<4> {
1877 : public:
1878 : // unsigned int has size 4 in both gcc and MSVC.
1879 : //
1880 : // As base/basictypes.h doesn't compile on Windows, we cannot use
1881 : // uint32, uint64, and etc here.
1882 : typedef int Int;
1883 : typedef unsigned int UInt;
1884 : };
1885 :
1886 : // The specialization for size 8.
1887 : template <>
1888 : class TypeWithSize<8> {
1889 : public:
1890 : #if GTEST_OS_WINDOWS
1891 : typedef __int64 Int;
1892 : typedef unsigned __int64 UInt;
1893 : #else
1894 : typedef long long Int; // NOLINT
1895 : typedef unsigned long long UInt; // NOLINT
1896 : #endif // GTEST_OS_WINDOWS
1897 : };
1898 :
1899 : // Integer types of known sizes.
1900 : typedef TypeWithSize<4>::Int Int32;
1901 : typedef TypeWithSize<4>::UInt UInt32;
1902 : typedef TypeWithSize<8>::Int Int64;
1903 : typedef TypeWithSize<8>::UInt UInt64;
1904 : typedef TypeWithSize<8>::Int TimeInMillis; // Represents time in milliseconds.
1905 :
1906 : // Utilities for command line flags and environment variables.
1907 :
1908 : // Macro for referencing flags.
1909 : #define GTEST_FLAG(name) FLAGS_gtest_##name
1910 :
1911 : // Macros for declaring flags.
1912 : #define GTEST_DECLARE_bool_(name) GTEST_API_ extern bool GTEST_FLAG(name)
1913 : #define GTEST_DECLARE_int32_(name) \
1914 : GTEST_API_ extern ::testing::internal::Int32 GTEST_FLAG(name)
1915 : #define GTEST_DECLARE_string_(name) \
1916 : GTEST_API_ extern ::std::string GTEST_FLAG(name)
1917 :
1918 : // Macros for defining flags.
1919 : #define GTEST_DEFINE_bool_(name, default_val, doc) \
1920 : GTEST_API_ bool GTEST_FLAG(name) = (default_val)
1921 : #define GTEST_DEFINE_int32_(name, default_val, doc) \
1922 : GTEST_API_ ::testing::internal::Int32 GTEST_FLAG(name) = (default_val)
1923 : #define GTEST_DEFINE_string_(name, default_val, doc) \
1924 : GTEST_API_ ::std::string GTEST_FLAG(name) = (default_val)
1925 :
1926 : // Thread annotations
1927 : #define GTEST_EXCLUSIVE_LOCK_REQUIRED_(locks)
1928 : #define GTEST_LOCK_EXCLUDED_(locks)
1929 :
1930 : // Parses 'str' for a 32-bit signed integer. If successful, writes the result
1931 : // to *value and returns true; otherwise leaves *value unchanged and returns
1932 : // false.
1933 : // TODO(chandlerc): Find a better way to refactor flag and environment parsing
1934 : // out of both gtest-port.cc and gtest.cc to avoid exporting this utility
1935 : // function.
1936 : bool ParseInt32(const Message& src_text, const char* str, Int32* value);
1937 :
1938 : // Parses a bool/Int32/string from the environment variable
1939 : // corresponding to the given Google Test flag.
1940 : bool BoolFromGTestEnv(const char* flag, bool default_val);
1941 : GTEST_API_ Int32 Int32FromGTestEnv(const char* flag, Int32 default_val);
1942 : const char* StringFromGTestEnv(const char* flag, const char* default_val);
1943 :
1944 : } // namespace internal
1945 : } // namespace testing
1946 :
1947 : #endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_PORT_H_
|
