diff options
Diffstat (limited to 'libstdc++-v3/testsuite/20_util/shared_ptr/thread')
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc | 197 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc | 199 |
2 files changed, 396 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc new file mode 100644 index 000000000..b215f654a --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc @@ -0,0 +1,197 @@ +// Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation +// +// 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 3, 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 COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +// 20.6.6.2 Template class shared_ptr [util.smartptr.shared] + +// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } } +// { dg-options "-pthread -std=gnu++0x" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } } +// { dg-options "-pthreads -std=gnu++0x" { target *-*-solaris* } } +// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } } + +#include <memory> +#include <random> +#include <vector> +#include <testsuite_hooks.h> +#include <iostream> +#include <cstdlib> + +#include <pthread.h> + +#ifdef _GLIBCXX_HAVE_UNISTD_H +#include <unistd.h> // To test for _POSIX_THREAD_PRIORITY_SCHEDULING +#endif + +/* This (brute-force) tests the atomicity and thus thread safety of the + * shared_ptr <- weak_ptr + * assignment operation by allocating a test object, retrieving a weak + * reference to it, and letting a number of threads repeatedly create strong + * references from the weak reference. + * Specifically, this tests the function _Sp_counted_base<true>::add_ref_lock() + */ + + +const unsigned int HAMMER_MAX_THREADS = 10; +const unsigned int POOL_SIZE = 1000; +const unsigned long HAMMER_REPEAT = 100000; +const unsigned long KILL_ONE_IN = 1000; + +struct A + { + static _Atomic_word counter; + A() + { + __gnu_cxx::__atomic_add(&counter, 1); + } + ~A() + { + __gnu_cxx::__atomic_add(&counter, -1); + } + }; + +_Atomic_word A::counter = 0; + +typedef std::shared_ptr<A> sp_A_t; +typedef std::weak_ptr<A> wp_A_t; + +typedef std::vector<sp_A_t> sp_vector_t; +typedef std::vector<wp_A_t> wp_vector_t; + +struct shared_and_weak_pools +{ + sp_vector_t& shared_pool; + wp_vector_t& weak_pool; + + shared_and_weak_pools(sp_vector_t& _shared_pool, wp_vector_t& _weak_pool) + : shared_pool(_shared_pool), weak_pool(_weak_pool) + { } +}; + +void* thread_hammer_and_kill(void* opaque_pools) +{ + shared_and_weak_pools& pools = *static_cast<shared_and_weak_pools*>(opaque_pools); + // Using the same parameters as in the RNG test cases. + std::mersenne_twister_engine< + unsigned long, 32, 624, 397, 31, + 0x9908b0dful, 11, + 0xfffffffful, 7, + 0x9d2c5680ul, 15, + 0xefc60000ul, 18, 1812433253ul> rng; + + sp_vector_t::iterator cur_shared = pools.shared_pool.begin(); + wp_vector_t::iterator cur_weak = pools.weak_pool.begin(); + + for (unsigned int i = 0; i < HAMMER_REPEAT; ++i) + { + try + { + sp_A_t strong(*cur_weak); + } + catch (std::bad_weak_ptr& exception) + { + ++cur_weak; + if (cur_weak == pools.weak_pool.end()) + break; + } + + if (rng() % KILL_ONE_IN == 0) + { + cur_shared->reset(); + ++cur_shared; + } + } + return 0; +} + +void* thread_hammer(void* opaque_weak) +{ + wp_vector_t& weak_pool = *static_cast<wp_vector_t*>(opaque_weak); + // Using the same parameters as in the RNG test cases. + std::mersenne_twister_engine< + unsigned long, 32, 624, 397, 31, + 0x9908b0dful, 11, + 0xfffffffful, 7, + 0x9d2c5680ul, 15, + 0xefc60000ul, 18, 1812433253ul> rng; + + wp_vector_t::iterator cur_weak = weak_pool.begin(); + + for (unsigned int i = 0; i < HAMMER_REPEAT; ++i) + { + try + { + sp_A_t strong(*cur_weak); + } + catch (std::bad_weak_ptr& exception) + { + ++cur_weak; + if (cur_weak == weak_pool.end()) + break; + } + } + return 0; +} + +int +test01() +{ + bool test __attribute__((unused)) = true; + sp_vector_t obj_pool(POOL_SIZE); + + for(sp_vector_t::iterator cur = obj_pool.begin(); cur != obj_pool.end(); ++cur) + { + cur->reset(new A); + } + // Obtain weak references. + std::vector<wp_vector_t> weak_pool(HAMMER_MAX_THREADS, wp_vector_t(obj_pool.begin(), obj_pool.end())); + + // Launch threads with pointer to weak reference. + pthread_t threads[HAMMER_MAX_THREADS]; +#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500 + pthread_setconcurrency (HAMMER_MAX_THREADS); +#endif + + pthread_attr_t tattr; + pthread_attr_init(&tattr); + + shared_and_weak_pools pools(obj_pool, weak_pool[0]); + pthread_create(threads, &tattr, thread_hammer_and_kill, static_cast<void*>(&pools)); + for (unsigned int worker = 1; worker < HAMMER_MAX_THREADS; worker++) + { + if (pthread_create(&threads[worker], &tattr, + thread_hammer, static_cast<void*>(&weak_pool[worker]))) + std::abort(); + } + // Wait for threads to complete, then check integrity of reference. + void* status; + for (unsigned int worker = 0; worker < HAMMER_MAX_THREADS; worker++) + { + if (pthread_join(threads[worker], &status)) + std::abort(); + } + obj_pool.clear(); + + VERIFY( A::counter == 0 ); + + return 0; +} + +int +main() +{ + test01(); + return 0; +} diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc new file mode 100644 index 000000000..c1ca796bb --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc @@ -0,0 +1,199 @@ +// Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation +// +// 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 3, 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 COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +// 20.6.6.2 Template class shared_ptr [util.smartptr.shared] + +// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } } +// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } } +// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } } +// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } } + +#include <memory> +#include <random> +#include <vector> +#include <testsuite_hooks.h> +#include <iostream> +#include <cstdlib> + +#include <pthread.h> + +#ifdef _GLIBCXX_HAVE_UNISTD_H +#include <unistd.h> // To test for _POSIX_THREAD_PRIORITY_SCHEDULING +#endif + +/* This (brute-force) tests the atomicity and thus thread safety of the + * shared_ptr <- weak_ptr + * assignment operation by allocating a test object, retrieving a weak + * reference to it, and letting a number of threads repeatedly create strong + * references from the weak reference. + * Specifically, this tests the function _Sp_counted_base<true>::add_ref_lock() + */ + + +const unsigned int HAMMER_MAX_THREADS = 10; +const unsigned int POOL_SIZE = 1000; +const unsigned long HAMMER_REPEAT = 100000; +const unsigned long KILL_ONE_IN = 1000; + +struct A + { + static _Atomic_word counter; + A() + { + __gnu_cxx::__atomic_add(&counter, 1); + } + ~A() + { + __gnu_cxx::__atomic_add(&counter, -1); + } + }; + +_Atomic_word A::counter = 0; + +using std::_S_mutex; + +typedef std::__shared_ptr<A, _S_mutex> sp_A_t; +typedef std::__weak_ptr<A, _S_mutex> wp_A_t; + +typedef std::vector<sp_A_t> sp_vector_t; +typedef std::vector<wp_A_t> wp_vector_t; + +struct shared_and_weak_pools +{ + sp_vector_t& shared_pool; + wp_vector_t& weak_pool; + + shared_and_weak_pools(sp_vector_t& _shared_pool, wp_vector_t& _weak_pool) + : shared_pool(_shared_pool), weak_pool(_weak_pool) + { } +}; + +void* thread_hammer_and_kill(void* opaque_pools) +{ + shared_and_weak_pools& pools = *static_cast<shared_and_weak_pools*>(opaque_pools); + // Using the same parameters as in the RNG test cases. + std::mersenne_twister_engine< + unsigned long, 32, 624, 397, 31, + 0x9908b0dful, 11, + 0xfffffffful, 7, + 0x9d2c5680ul, 15, + 0xefc60000ul, 18, 1812433253ul> rng; + + sp_vector_t::iterator cur_shared = pools.shared_pool.begin(); + wp_vector_t::iterator cur_weak = pools.weak_pool.begin(); + + for (unsigned int i = 0; i < HAMMER_REPEAT; ++i) + { + try + { + sp_A_t strong(*cur_weak); + } + catch (std::bad_weak_ptr& exception) + { + ++cur_weak; + if (cur_weak == pools.weak_pool.end()) + break; + } + + if (rng() % KILL_ONE_IN == 0) + { + cur_shared->reset(); + ++cur_shared; + } + } + return 0; +} + +void* thread_hammer(void* opaque_weak) +{ + wp_vector_t& weak_pool = *static_cast<wp_vector_t*>(opaque_weak); + // Using the same parameters as in the RNG test cases. + std::mersenne_twister_engine< + unsigned long, 32, 624, 397, 31, + 0x9908b0dful, 11, + 0xfffffffful, 7, + 0x9d2c5680ul, 15, + 0xefc60000ul, 18, 1812433253ul> rng; + + wp_vector_t::iterator cur_weak = weak_pool.begin(); + + for (unsigned int i = 0; i < HAMMER_REPEAT; ++i) + { + try + { + sp_A_t strong(*cur_weak); + } + catch (std::bad_weak_ptr& exception) + { + ++cur_weak; + if (cur_weak == weak_pool.end()) + break; + } + } + return 0; +} + +int +test01() +{ + bool test __attribute__((unused)) = true; + sp_vector_t obj_pool(POOL_SIZE); + + for(sp_vector_t::iterator cur = obj_pool.begin(); cur != obj_pool.end(); ++cur) + { + cur->reset(new A); + } + // Obtain weak references. + std::vector<wp_vector_t> weak_pool(HAMMER_MAX_THREADS, wp_vector_t(obj_pool.begin(), obj_pool.end())); + + // Launch threads with pointer to weak reference. + pthread_t threads[HAMMER_MAX_THREADS]; +#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500 + pthread_setconcurrency (HAMMER_MAX_THREADS); +#endif + + pthread_attr_t tattr; + pthread_attr_init(&tattr); + + shared_and_weak_pools pools(obj_pool, weak_pool[0]); + pthread_create(threads, &tattr, thread_hammer_and_kill, static_cast<void*>(&pools)); + for (unsigned int worker = 1; worker < HAMMER_MAX_THREADS; worker++) + { + if (pthread_create(&threads[worker], &tattr, + thread_hammer, static_cast<void*>(&weak_pool[worker]))) + std::abort(); + } + // Wait for threads to complete, then check integrity of reference. + void* status; + for (unsigned int worker = 0; worker < HAMMER_MAX_THREADS; worker++) + { + if (pthread_join(threads[worker], &status)) + std::abort(); + } + obj_pool.clear(); + + VERIFY( A::counter == 0 ); + + return 0; +} + +int +main() +{ + test01(); + return 0; +} |