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// Copyright (C) 2003-2016 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 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/>.
#include <testsuite_performance.h>
typedef int test_type;
// The number of iterations to be performed.
int iterations = 1000;
// TODO - restore Stefan's comment? i don't understand it. -- fwy
int insert_values = 128;
class Lock
{
public:
Lock() {pthread_mutex_init(&mutex, 0);}
~Lock() {pthread_mutex_destroy(&mutex);}
public:
inline pthread_mutex_t* operator&() {return &mutex;}
public:
inline void lock() {pthread_mutex_lock(&mutex);}
inline void unlock() {pthread_mutex_unlock(&mutex);}
private:
Lock(const Lock&);
Lock& operator=(Lock&);
private:
pthread_mutex_t mutex;
};
class AutoLock
{
public:
AutoLock(Lock& _lock)
: lock(_lock)
{lock.lock();}
~AutoLock() {lock.unlock();}
private:
AutoLock(AutoLock&);
AutoLock& operator=(AutoLock&);
private:
Lock& lock;
};
template<typename Container>
class Queue
{
public:
Queue() {pthread_cond_init(&condition, 0);}
~Queue() {pthread_cond_destroy(&condition);}
public:
void push_back(const typename Container::value_type& x);
void swap(Container& container);
private:
pthread_cond_t condition;
Lock lock;
Container queue;
};
template<typename Container>
void
Queue<Container>::push_back(const typename Container::value_type& value)
{
AutoLock auto_lock(lock);
const bool signal = queue.empty();
queue.insert(queue.end(), value);
if (signal) pthread_cond_signal(&condition);
}
template<typename Container>
void
Queue<Container>::swap(Container& container)
{
AutoLock auto_lock(lock);
while (queue.empty()) pthread_cond_wait(&condition, &lock);
queue.swap(container);
}
class Thread
{
// NB: Make this the last data member of an object defining operator()().
public:
class Attributes
{
public:
Attributes(int state = PTHREAD_CREATE_JOINABLE);
~Attributes() {pthread_attr_destroy(&attributes);}
public:
inline pthread_attr_t* operator&() {return &attributes;}
private:
pthread_attr_t attributes;
};
public:
Thread() {thread = pthread_self();}
~Thread();
public:
template <typename ThreadOwner>
void create(ThreadOwner* owner);
private:
pthread_t thread;
};
Thread::Attributes::Attributes(int state)
{
pthread_attr_init(&attributes);
pthread_attr_setdetachstate(&attributes, state);
}
Thread::~Thread()
{
if (!pthread_equal(thread, pthread_self()))
pthread_join(thread, 0);
}
template<typename ThreadOwner>
void*
create_thread(void* _this)
{
ThreadOwner* owner = static_cast<ThreadOwner*>(_this);
(*owner)();
return 0;
}
template<typename ThreadOwner>
void
Thread::create(ThreadOwner* owner)
{
Thread::Attributes attributes;
pthread_create(&thread, &attributes, create_thread<ThreadOwner>, owner);
}
template<typename Container>
class Consumer
{
public:
Consumer(Queue<Container>& _queue)
: queue(_queue)
{thread.create(this);}
public:
void operator()();
private:
Queue<Container>& queue;
Thread thread;
};
template<typename Container>
void
Consumer<Container>::operator()()
{
for (int j = insert_values * iterations; j > 0;)
{
Container container;
queue.swap(container);
j -= container.size();
}
}
template<typename TestType>
struct Value : public std::pair<TestType, TestType>
{
Value()
: std::pair<TestType, TestType>(0, 0)
{ }
inline Value operator++() {return ++this->first, *this;}
inline operator TestType() const {return this->first;}
};
template<typename Container>
class ProducerConsumer : private Queue<Container>
{
public:
ProducerConsumer() {thread.create(this);}
public:
void operator()();
private:
Thread thread;
};
template<typename Container>
void
ProducerConsumer<Container>::operator()()
{
Consumer<Container> consumer(*this);
Value<test_type> test_value;
for (int j = insert_values * iterations; j-- > 0;)
this->push_back(++test_value);
}
template<typename Container, int Iter>
void
do_loop()
{
ProducerConsumer<Container> pc1;
ProducerConsumer<Container> pc2;
}
int
main()
{
#ifdef TEST_T1
#define thread_type true
#endif
typedef __gnu_test::maps<test_type, thread_type>::type map_typelist;
typedef __gnu_test::sets<test_type, thread_type>::type set_typelist;
typedef __gnu_cxx::typelist::append<map_typelist, set_typelist>::type container_types;
typedef test_sequence<thread_type> test_type;
test_type test("producer_consumer_associative");
__gnu_cxx::typelist::apply(test, container_types());
return 0;
}
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