| // -*- C++ -*- |
| // Utility subroutines for the C++ library testsuite. |
| // |
| // Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
| // Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 2, or (at your option) |
| // any later version. |
| // |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| // |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING. If not, write to the Free |
| // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| // USA. |
| // |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| // This file provides the following: |
| // |
| // 1) VERIFY(), via _GLIBCXX_ASSERT, from Brent Verner <brent@rcfile.org>. |
| // This file is included in the various testsuite programs to provide |
| // #define(able) assert() behavior for debugging/testing. It may be |
| // a suitable location for other furry woodland creatures as well. |
| // |
| // 2) set_memory_limits() |
| // set_memory_limits() uses setrlimit() to restrict dynamic memory |
| // allocation. We provide a default memory limit if none is passed by the |
| // calling application. The argument to set_memory_limits() is the |
| // limit in megabytes (a floating-point number). If _GLIBCXX_RES_LIMITS is |
| // not #defined before including this header, then no limiting is attempted. |
| // |
| // 3) counter |
| // This is a POD with a static data member, gnu_counting_struct::count, |
| // which starts at zero, increments on instance construction, and decrements |
| // on instance destruction. "assert_count(n)" can be called to VERIFY() |
| // that the count equals N. |
| // |
| // 4) copy_tracker, from Stephen M. Webb <stephen@bregmasoft.com>. |
| // A class with nontrivial ctor/dtor that provides the ability to track the |
| // number of copy ctors and dtors, and will throw on demand during copy. |
| |
| #ifndef _GLIBCXX_TESTSUITE_HOOKS_H |
| #define _GLIBCXX_TESTSUITE_HOOKS_H |
| |
| #include <bits/c++config.h> |
| #include <bits/functexcept.h> |
| #include <cstddef> |
| #include <locale> |
| #ifdef _GLIBCXX_HAVE_SYS_STAT_H |
| #include <sys/stat.h> |
| #endif |
| |
| #ifdef _GLIBCXX_ASSERT |
| # include <cassert> |
| # define VERIFY(fn) assert(fn) |
| #else |
| # define VERIFY(fn) test &= (fn) |
| #endif |
| |
| #ifdef _GLIBCXX_HAVE_UNISTD_H |
| # include <unistd.h> |
| #else |
| # define unlink(x) |
| #endif |
| |
| namespace __gnu_test |
| { |
| // All macros are defined in GLIBCXX_CONFIGURE_TESTSUITE and imported |
| // from c++config.h |
| |
| // Set memory limits if possible, if not set to 0. |
| #ifndef _GLIBCXX_RES_LIMITS |
| # define MEMLIMIT_MB 0 |
| #else |
| # ifndef MEMLIMIT_MB |
| # define MEMLIMIT_MB 16.0 |
| # endif |
| #endif |
| extern void |
| set_memory_limits(float __size = MEMLIMIT_MB); |
| |
| extern void |
| set_file_limit(unsigned long __size); |
| |
| // Check mangled name demangles (using __cxa_demangle) as expected. |
| void |
| verify_demangle(const char* mangled, const char* wanted); |
| |
| // 17.3.2.1.2 - Bitmask types [lib.bitmask.types] |
| // bitmask_operators |
| template<typename bitmask_type> |
| void |
| bitmask_operators(bitmask_type a = bitmask_type(), |
| bitmask_type b = bitmask_type()) |
| { |
| a | b; |
| a & b; |
| a ^ b; |
| ~b; |
| a |= b; // set |
| a &= ~b; // clear |
| a ^= b; |
| } |
| |
| // Simple callback structure for variable numbers of tests (all with |
| // same signature). Assume all unit tests are of the signature |
| // void test01(); |
| class func_callback |
| { |
| public: |
| typedef void (*test_type) (void); |
| |
| private: |
| int _M_size; |
| test_type _M_tests[15]; |
| |
| func_callback& |
| operator=(const func_callback&); |
| |
| func_callback(const func_callback&); |
| |
| public: |
| func_callback(): _M_size(0) { }; |
| |
| int |
| size() const { return _M_size; } |
| |
| const test_type* |
| tests() const { return _M_tests; } |
| |
| void |
| push_back(test_type test) |
| { |
| _M_tests[_M_size] = test; |
| ++_M_size; |
| } |
| }; |
| |
| |
| // Run select unit tests after setting global locale. |
| void |
| run_tests_wrapped_locale(const char*, const func_callback&); |
| |
| // Run select unit tests after setting environment variables. |
| void |
| run_tests_wrapped_env(const char*, const char*, const func_callback&); |
| |
| |
| // For containers (23.1/3). |
| struct NonDefaultConstructible |
| { |
| NonDefaultConstructible(int) { } |
| }; |
| |
| inline bool |
| operator==(const NonDefaultConstructible&, |
| const NonDefaultConstructible&) |
| { return false; } |
| |
| inline bool |
| operator<(const NonDefaultConstructible&, |
| const NonDefaultConstructible&) |
| { return false; } |
| |
| |
| // Counting. |
| struct counter |
| { |
| // Specifically and glaringly-obviously marked 'signed' so that when |
| // COUNT mistakenly goes negative, we can track the patterns of |
| // deletions more easily. |
| typedef signed int size_type; |
| static size_type count; |
| counter() { ++count; } |
| counter (const counter&) { ++count; } |
| ~counter() { --count; } |
| }; |
| |
| #define assert_count(n) VERIFY(__gnu_test::counter::count == n) |
| |
| // A (static) class for counting copy constructors and possibly throwing an |
| // exception on a desired count. |
| class copy_constructor |
| { |
| public: |
| static unsigned int |
| count() { return count_; } |
| |
| static void |
| mark_call() |
| { |
| count_++; |
| if (count_ == throw_on_) |
| std::__throw_runtime_error("copy_constructor::mark_call"); |
| } |
| |
| static void |
| reset() |
| { |
| count_ = 0; |
| throw_on_ = 0; |
| } |
| |
| static void |
| throw_on(unsigned int count) { throw_on_ = count; } |
| |
| private: |
| static unsigned int count_; |
| static unsigned int throw_on_; |
| }; |
| |
| // A (static) class for counting assignment operator calls and |
| // possibly throwing an exception on a desired count. |
| class assignment_operator |
| { |
| public: |
| static unsigned int |
| count() { return count_; } |
| |
| static void |
| mark_call() |
| { |
| count_++; |
| if (count_ == throw_on_) |
| std::__throw_runtime_error("assignment_operator::mark_call"); |
| } |
| |
| static void |
| reset() |
| { |
| count_ = 0; |
| throw_on_ = 0; |
| } |
| |
| static void |
| throw_on(unsigned int count) { throw_on_ = count; } |
| |
| private: |
| static unsigned int count_; |
| static unsigned int throw_on_; |
| }; |
| |
| // A (static) class for tracking calls to an object's destructor. |
| class destructor |
| { |
| public: |
| static unsigned int |
| count() { return _M_count; } |
| |
| static void |
| mark_call() { _M_count++; } |
| |
| static void |
| reset() { _M_count = 0; } |
| |
| private: |
| static unsigned int _M_count; |
| }; |
| |
| // An class of objects that can be used for validating various |
| // behaviours and guarantees of containers and algorithms defined in |
| // the standard library. |
| class copy_tracker |
| { |
| public: |
| // Creates a copy-tracking object with the given ID number. If |
| // "throw_on_copy" is set, an exception will be thrown if an |
| // attempt is made to copy this object. |
| copy_tracker(int id = next_id_--, bool throw_on_copy = false) |
| : id_(id) , throw_on_copy_(throw_on_copy) { } |
| |
| // Copy-constructs the object, marking a call to the copy |
| // constructor and forcing an exception if indicated. |
| copy_tracker(const copy_tracker& rhs) |
| : id_(rhs.id()), throw_on_copy_(rhs.throw_on_copy_) |
| { |
| if (throw_on_copy_) |
| copy_constructor::throw_on(copy_constructor::count() + 1); |
| copy_constructor::mark_call(); |
| } |
| |
| // Assigns the value of another object to this one, tracking the |
| // number of times this member function has been called and if the |
| // other object is supposed to throw an exception when it is |
| // copied, well, make it so. |
| copy_tracker& |
| operator=(const copy_tracker& rhs) |
| { |
| id_ = rhs.id(); |
| if (rhs.throw_on_copy_) |
| assignment_operator::throw_on(assignment_operator::count() + 1); |
| assignment_operator::mark_call(); |
| return *this; |
| } |
| |
| ~copy_tracker() |
| { destructor::mark_call(); } |
| |
| int |
| id() const { return id_; } |
| |
| private: |
| int id_; |
| const bool throw_on_copy_; |
| |
| public: |
| static void |
| reset() |
| { |
| copy_constructor::reset(); |
| assignment_operator::reset(); |
| destructor::reset(); |
| } |
| |
| // for backwards-compatibility |
| static int |
| copyCount() |
| { return copy_constructor::count(); } |
| |
| // for backwards-compatibility |
| static int |
| dtorCount() |
| { return destructor::count(); } |
| |
| private: |
| static int next_id_; |
| }; |
| |
| inline bool |
| operator==(const copy_tracker& lhs, const copy_tracker& rhs) |
| { return lhs.id() == rhs.id(); } |
| |
| // Class for checking required type conversions, implicit and |
| // explicit for given library data structures. |
| template<typename _Container> |
| struct conversion |
| { |
| typedef typename _Container::const_iterator const_iterator; |
| |
| // Implicit conversion iterator to const_iterator. |
| static const_iterator |
| iterator_to_const_iterator() |
| { |
| _Container v; |
| const_iterator it = v.begin(); |
| const_iterator end = v.end(); |
| return it == end ? v.end() : it; |
| } |
| }; |
| |
| // A binary semaphore for use across multiple processes. |
| class semaphore |
| { |
| public: |
| // Creates a binary semaphore. The semaphore is initially in the |
| // unsignaled state. |
| semaphore(); |
| |
| // Destroy the semaphore. |
| ~semaphore(); |
| |
| // Signal the semaphore. If there are processes blocked in |
| // "wait", exactly one will be permitted to proceed. |
| void signal(); |
| |
| // Wait until the semaphore is signaled. |
| void wait(); |
| |
| private: |
| int sem_set_; |
| |
| pid_t pid_; |
| }; |
| |
| // For use in 22_locale/time_get and time_put. |
| tm test_tm(int sec, int min, int hour, int mday, int mon, |
| int year, int wday, int yday, int isdst); |
| |
| } // namespace __gnu_test |
| |
| #endif // _GLIBCXX_TESTSUITE_HOOKS_H |
| |