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// (C) Copyright 2008 Anthony Williams
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#define BOOST_THREAD_VERSION 2
#define BOOST_TEST_MODULE Boost.Threads: generic locks test suite
#include <boost/test/unit_test.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/thread_only.hpp>
#include <boost/thread/locks.hpp>
#include <boost/thread/condition_variable.hpp>
BOOST_AUTO_TEST_CASE(test_lock_two_uncontended)
{
boost::mutex m1,m2;
boost::unique_lock<boost::mutex> l1(m1,boost::defer_lock),
l2(m2,boost::defer_lock);
BOOST_CHECK(!l1.owns_lock());
BOOST_CHECK(!l2.owns_lock());
boost::lock(l1,l2);
BOOST_CHECK(l1.owns_lock());
BOOST_CHECK(l2.owns_lock());
}
struct wait_data
{
boost::mutex m;
bool flag;
boost::condition_variable cond;
wait_data():
flag(false)
{}
void wait()
{
boost::unique_lock<boost::mutex> l(m);
while(!flag)
{
cond.wait(l);
}
}
template<typename Duration>
bool timed_wait(Duration d)
{
boost::system_time const target=boost::get_system_time()+d;
boost::unique_lock<boost::mutex> l(m);
while(!flag)
{
if(!cond.timed_wait(l,target))
{
return flag;
}
}
return true;
}
void signal()
{
boost::unique_lock<boost::mutex> l(m);
flag=true;
cond.notify_all();
}
};
void lock_mutexes_slowly(boost::mutex* m1,boost::mutex* m2,wait_data* locked,wait_data* quit)
{
boost::lock_guard<boost::mutex> l1(*m1);
boost::this_thread::sleep(boost::posix_time::milliseconds(500));
boost::lock_guard<boost::mutex> l2(*m2);
locked->signal();
quit->wait();
}
void lock_pair(boost::mutex* m1,boost::mutex* m2)
{
boost::lock(*m1,*m2);
boost::unique_lock<boost::mutex> l1(*m1,boost::adopt_lock),
l2(*m2,boost::adopt_lock);
}
BOOST_AUTO_TEST_CASE(test_lock_two_other_thread_locks_in_order)
{
boost::mutex m1,m2;
wait_data locked;
wait_data release;
boost::thread t(lock_mutexes_slowly,&m1,&m2,&locked,&release);
boost::this_thread::sleep(boost::posix_time::milliseconds(10));
boost::thread t2(lock_pair,&m1,&m2);
BOOST_CHECK(locked.timed_wait(boost::posix_time::seconds(1)));
release.signal();
BOOST_CHECK(t2.timed_join(boost::posix_time::seconds(1)));
t.join();
}
BOOST_AUTO_TEST_CASE(test_lock_two_other_thread_locks_in_opposite_order)
{
boost::mutex m1,m2;
wait_data locked;
wait_data release;
boost::thread t(lock_mutexes_slowly,&m1,&m2,&locked,&release);
boost::this_thread::sleep(boost::posix_time::milliseconds(10));
boost::thread t2(lock_pair,&m2,&m1);
BOOST_CHECK(locked.timed_wait(boost::posix_time::seconds(1)));
release.signal();
BOOST_CHECK(t2.timed_join(boost::posix_time::seconds(1)));
t.join();
}
BOOST_AUTO_TEST_CASE(test_lock_five_uncontended)
{
boost::mutex m1,m2,m3,m4,m5;
boost::unique_lock<boost::mutex> l1(m1,boost::defer_lock),
l2(m2,boost::defer_lock),
l3(m3,boost::defer_lock),
l4(m4,boost::defer_lock),
l5(m5,boost::defer_lock);
BOOST_CHECK(!l1.owns_lock());
BOOST_CHECK(!l2.owns_lock());
BOOST_CHECK(!l3.owns_lock());
BOOST_CHECK(!l4.owns_lock());
BOOST_CHECK(!l5.owns_lock());
boost::lock(l1,l2,l3,l4,l5);
BOOST_CHECK(l1.owns_lock());
BOOST_CHECK(l2.owns_lock());
BOOST_CHECK(l3.owns_lock());
BOOST_CHECK(l4.owns_lock());
BOOST_CHECK(l5.owns_lock());
}
void lock_five_mutexes_slowly(boost::mutex* m1,boost::mutex* m2,boost::mutex* m3,boost::mutex* m4,boost::mutex* m5,
wait_data* locked,wait_data* quit)
{
boost::lock_guard<boost::mutex> l1(*m1);
boost::this_thread::sleep(boost::posix_time::milliseconds(500));
boost::lock_guard<boost::mutex> l2(*m2);
boost::this_thread::sleep(boost::posix_time::milliseconds(500));
boost::lock_guard<boost::mutex> l3(*m3);
boost::this_thread::sleep(boost::posix_time::milliseconds(500));
boost::lock_guard<boost::mutex> l4(*m4);
boost::this_thread::sleep(boost::posix_time::milliseconds(500));
boost::lock_guard<boost::mutex> l5(*m5);
locked->signal();
quit->wait();
}
void lock_five(boost::mutex* m1,boost::mutex* m2,boost::mutex* m3,boost::mutex* m4,boost::mutex* m5)
{
boost::lock(*m1,*m2,*m3,*m4,*m5);
m1->unlock();
m2->unlock();
m3->unlock();
m4->unlock();
m5->unlock();
}
BOOST_AUTO_TEST_CASE(test_lock_five_other_thread_locks_in_order)
{
boost::mutex m1,m2,m3,m4,m5;
wait_data locked;
wait_data release;
boost::thread t(lock_five_mutexes_slowly,&m1,&m2,&m3,&m4,&m5,&locked,&release);
boost::this_thread::sleep(boost::posix_time::milliseconds(10));
boost::thread t2(lock_five,&m1,&m2,&m3,&m4,&m5);
BOOST_CHECK(locked.timed_wait(boost::posix_time::seconds(3)));
release.signal();
BOOST_CHECK(t2.timed_join(boost::posix_time::seconds(3)));
t.join();
}
BOOST_AUTO_TEST_CASE(test_lock_five_other_thread_locks_in_different_order)
{
boost::mutex m1,m2,m3,m4,m5;
wait_data locked;
wait_data release;
boost::thread t(lock_five_mutexes_slowly,&m1,&m2,&m3,&m4,&m5,&locked,&release);
boost::this_thread::sleep(boost::posix_time::milliseconds(10));
boost::thread t2(lock_five,&m5,&m1,&m4,&m2,&m3);
BOOST_CHECK(locked.timed_wait(boost::posix_time::seconds(3)));
release.signal();
BOOST_CHECK(t2.timed_join(boost::posix_time::seconds(3)));
t.join();
}
void lock_n(boost::mutex* mutexes,unsigned count)
{
boost::lock(mutexes,mutexes+count);
for(unsigned i=0;i<count;++i)
{
mutexes[i].unlock();
}
}
BOOST_AUTO_TEST_CASE(test_lock_ten_other_thread_locks_in_different_order)
{
unsigned const num_mutexes=10;
boost::mutex mutexes[num_mutexes];
wait_data locked;
wait_data release;
boost::thread t(lock_five_mutexes_slowly,&mutexes[6],&mutexes[3],&mutexes[8],&mutexes[0],&mutexes[2],&locked,&release);
boost::this_thread::sleep(boost::posix_time::milliseconds(10));
boost::thread t2(lock_n,mutexes,num_mutexes);
BOOST_CHECK(locked.timed_wait(boost::posix_time::seconds(3)));
release.signal();
BOOST_CHECK(t2.timed_join(boost::posix_time::seconds(3)));
t.join();
}
struct dummy_mutex
{
bool is_locked;
dummy_mutex():
is_locked(false)
{}
void lock()
{
is_locked=true;
}
bool try_lock()
{
if(is_locked)
{
return false;
}
is_locked=true;
return true;
}
void unlock()
{
is_locked=false;
}
};
namespace boost
{
template<>
struct is_mutex_type<dummy_mutex>
{
BOOST_STATIC_CONSTANT(bool, value = true);
};
}
BOOST_AUTO_TEST_CASE(test_lock_five_in_range)
{
unsigned const num_mutexes=5;
dummy_mutex mutexes[num_mutexes];
boost::lock(mutexes,mutexes+num_mutexes);
for(unsigned i=0;i<num_mutexes;++i)
{
BOOST_CHECK(mutexes[i].is_locked);
}
}
class dummy_iterator:
public std::iterator<std::forward_iterator_tag,
dummy_mutex>
{
private:
dummy_mutex* p;
public:
explicit dummy_iterator(dummy_mutex* p_):
p(p_)
{}
bool operator==(dummy_iterator const& other) const
{
return p==other.p;
}
bool operator!=(dummy_iterator const& other) const
{
return p!=other.p;
}
bool operator<(dummy_iterator const& other) const
{
return p<other.p;
}
dummy_mutex& operator*() const
{
return *p;
}
dummy_mutex* operator->() const
{
return p;
}
dummy_iterator operator++(int)
{
dummy_iterator temp(*this);
++p;
return temp;
}
dummy_iterator& operator++()
{
++p;
return *this;
}
};
BOOST_AUTO_TEST_CASE(test_lock_five_in_range_custom_iterator)
{
unsigned const num_mutexes=5;
dummy_mutex mutexes[num_mutexes];
boost::lock(dummy_iterator(mutexes),dummy_iterator(mutexes+num_mutexes));
for(unsigned i=0;i<num_mutexes;++i)
{
BOOST_CHECK(mutexes[i].is_locked);
}
}
class dummy_mutex2:
public dummy_mutex
{};
BOOST_AUTO_TEST_CASE(test_lock_ten_in_range_inherited_mutex)
{
unsigned const num_mutexes=10;
dummy_mutex2 mutexes[num_mutexes];
boost::lock(mutexes,mutexes+num_mutexes);
for(unsigned i=0;i<num_mutexes;++i)
{
BOOST_CHECK(mutexes[i].is_locked);
}
}
BOOST_AUTO_TEST_CASE(test_try_lock_two_uncontended)
{
dummy_mutex m1,m2;
int const res=boost::try_lock(m1,m2);
BOOST_CHECK(res==-1);
BOOST_CHECK(m1.is_locked);
BOOST_CHECK(m2.is_locked);
}
BOOST_AUTO_TEST_CASE(test_try_lock_two_first_locked)
{
dummy_mutex m1,m2;
m1.lock();
boost::unique_lock<dummy_mutex> l1(m1,boost::defer_lock),
l2(m2,boost::defer_lock);
int const res=boost::try_lock(l1,l2);
BOOST_CHECK(res==0);
BOOST_CHECK(m1.is_locked);
BOOST_CHECK(!m2.is_locked);
BOOST_CHECK(!l1.owns_lock());
BOOST_CHECK(!l2.owns_lock());
}
BOOST_AUTO_TEST_CASE(test_try_lock_two_second_locked)
{
dummy_mutex m1,m2;
m2.lock();
boost::unique_lock<dummy_mutex> l1(m1,boost::defer_lock),
l2(m2,boost::defer_lock);
int const res=boost::try_lock(l1,l2);
BOOST_CHECK(res==1);
BOOST_CHECK(!m1.is_locked);
BOOST_CHECK(m2.is_locked);
BOOST_CHECK(!l1.owns_lock());
BOOST_CHECK(!l2.owns_lock());
}
BOOST_AUTO_TEST_CASE(test_try_lock_three)
{
int const num_mutexes=3;
for(int i=-1;i<num_mutexes;++i)
{
dummy_mutex mutexes[num_mutexes];
if(i>=0)
{
mutexes[i].lock();
}
boost::unique_lock<dummy_mutex> l1(mutexes[0],boost::defer_lock),
l2(mutexes[1],boost::defer_lock),
l3(mutexes[2],boost::defer_lock);
int const res=boost::try_lock(l1,l2,l3);
BOOST_CHECK(res==i);
for(int j=0;j<num_mutexes;++j)
{
if((i==j) || (i==-1))
{
BOOST_CHECK(mutexes[j].is_locked);
}
else
{
BOOST_CHECK(!mutexes[j].is_locked);
}
}
if(i==-1)
{
BOOST_CHECK(l1.owns_lock());
BOOST_CHECK(l2.owns_lock());
BOOST_CHECK(l3.owns_lock());
}
else
{
BOOST_CHECK(!l1.owns_lock());
BOOST_CHECK(!l2.owns_lock());
BOOST_CHECK(!l3.owns_lock());
}
}
}
BOOST_AUTO_TEST_CASE(test_try_lock_four)
{
int const num_mutexes=4;
for(int i=-1;i<num_mutexes;++i)
{
dummy_mutex mutexes[num_mutexes];
if(i>=0)
{
mutexes[i].lock();
}
boost::unique_lock<dummy_mutex> l1(mutexes[0],boost::defer_lock),
l2(mutexes[1],boost::defer_lock),
l3(mutexes[2],boost::defer_lock),
l4(mutexes[3],boost::defer_lock);
int const res=boost::try_lock(l1,l2,l3,l4);
BOOST_CHECK(res==i);
for(int j=0;j<num_mutexes;++j)
{
if((i==j) || (i==-1))
{
BOOST_CHECK(mutexes[j].is_locked);
}
else
{
BOOST_CHECK(!mutexes[j].is_locked);
}
}
if(i==-1)
{
BOOST_CHECK(l1.owns_lock());
BOOST_CHECK(l2.owns_lock());
BOOST_CHECK(l3.owns_lock());
BOOST_CHECK(l4.owns_lock());
}
else
{
BOOST_CHECK(!l1.owns_lock());
BOOST_CHECK(!l2.owns_lock());
BOOST_CHECK(!l3.owns_lock());
BOOST_CHECK(!l4.owns_lock());
}
}
}
BOOST_AUTO_TEST_CASE(test_try_lock_five)
{
int const num_mutexes=5;
for(int i=-1;i<num_mutexes;++i)
{
dummy_mutex mutexes[num_mutexes];
if(i>=0)
{
mutexes[i].lock();
}
boost::unique_lock<dummy_mutex> l1(mutexes[0],boost::defer_lock),
l2(mutexes[1],boost::defer_lock),
l3(mutexes[2],boost::defer_lock),
l4(mutexes[3],boost::defer_lock),
l5(mutexes[4],boost::defer_lock);
int const res=boost::try_lock(l1,l2,l3,l4,l5);
BOOST_CHECK(res==i);
for(int j=0;j<num_mutexes;++j)
{
if((i==j) || (i==-1))
{
BOOST_CHECK(mutexes[j].is_locked);
}
else
{
BOOST_CHECK(!mutexes[j].is_locked);
}
}
if(i==-1)
{
BOOST_CHECK(l1.owns_lock());
BOOST_CHECK(l2.owns_lock());
BOOST_CHECK(l3.owns_lock());
BOOST_CHECK(l4.owns_lock());
BOOST_CHECK(l5.owns_lock());
}
else
{
BOOST_CHECK(!l1.owns_lock());
BOOST_CHECK(!l2.owns_lock());
BOOST_CHECK(!l3.owns_lock());
BOOST_CHECK(!l4.owns_lock());
BOOST_CHECK(!l5.owns_lock());
}
}
}
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