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fiber/test/test_condition.cpp

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// Copyright Oliver Kowalke 2009.
// 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)
#include <cstdlib>
#include <cstdio>
#include <iostream>
#include <map>
#include <stdexcept>
#include <vector>
#include <boost/bind.hpp>
#include <boost/chrono/system_clocks.hpp>
#include <boost/cstdint.hpp>
#include <boost/function.hpp>
#include <boost/ref.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/utility.hpp>
#include <boost/fiber/all.hpp>
namespace stm = boost::fibers;
namespace this_stm = boost::this_fiber;
int value = 0;
inline
boost::chrono::system_clock::time_point delay(int secs, int msecs=0, int nsecs=0)
{
boost::chrono::system_clock::time_point t = boost::chrono::system_clock::now();
t += boost::chrono::seconds( secs);
t += boost::chrono::milliseconds( msecs);
//t += boost::chrono::nanoseconds( nsecs);
return t;
}
struct condition_test_data
{
condition_test_data() : notified(0), awoken(0) { }
stm::mutex mutex;
stm::condition condition;
int notified;
int awoken;
};
struct cond_predicate
{
cond_predicate(int& var, int val) : _var(var), _val(val) { }
bool operator()() { return _var == _val; }
int& _var;
int _val;
private:
void operator=(cond_predicate&);
};
void notify_one_fn( stm::condition & cond)
{
cond.notify_one();
}
void notify_all_fn( stm::condition & cond)
{
cond.notify_all();
}
void wait_fn(
stm::mutex & mtx,
stm::condition & cond)
{
stm::mutex::scoped_lock lk( mtx);
cond.wait( lk);
++value;
}
void condition_test_waits( condition_test_data * data)
{
stm::mutex::scoped_lock lock( data->mutex);
BOOST_CHECK( lock ? true : false);
// Test wait.
while ( data->notified != 1)
{
fprintf( stderr, "fiber will wait\n");
data->condition.wait(lock);
fprintf( stderr, "fiber notified\n");
}
fprintf( stderr, " data->notified == 1\n");
BOOST_CHECK(lock ? true : false);
BOOST_CHECK_EQUAL(data->notified, 1);
data->awoken++;
data->condition.notify_one();
// Test predicate wait.
data->condition.wait(lock, cond_predicate(data->notified, 2));
BOOST_CHECK(lock ? true : false);
BOOST_CHECK_EQUAL(data->notified, 2);
data->awoken++;
data->condition.notify_one();
// Test timed_wait.
boost::chrono::system_clock::time_point xt = delay(10);
while (data->notified != 3)
data->condition.timed_wait(lock, xt);
BOOST_CHECK(lock ? true : false);
BOOST_CHECK_EQUAL(data->notified, 3);
data->awoken++;
data->condition.notify_one();
// Test predicate timed_wait.
xt = delay(10);
cond_predicate pred(data->notified, 4);
BOOST_CHECK(data->condition.timed_wait(lock, xt, pred));
BOOST_CHECK(lock ? true : false);
BOOST_CHECK(pred());
BOOST_CHECK_EQUAL(data->notified, 4);
data->awoken++;
data->condition.notify_one();
// Test predicate timed_wait with relative timeout
cond_predicate pred_rel(data->notified, 5);
BOOST_CHECK(data->condition.timed_wait(lock, boost::chrono::seconds(10), pred_rel));
BOOST_CHECK(lock ? true : false);
BOOST_CHECK(pred_rel());
BOOST_CHECK_EQUAL(data->notified, 5);
data->awoken++;
data->condition.notify_one();
// Test timeout timed_wait.
BOOST_CHECK(!data->condition.timed_wait(lock, boost::chrono::seconds(2)));
BOOST_CHECK(lock ? true : false);
}
void do_test_condition_waits()
{
condition_test_data data;
stm::fiber s(
boost::bind( & condition_test_waits, & data) );
{
stm::mutex::scoped_lock lock( data.mutex);
BOOST_CHECK(lock ? true : false);
fprintf( stderr, "main increments data.notified\n");
data.notified++;
fprintf( stderr, "main notifies one fiber\n");
data.condition.notify_one();
while (data.awoken != 1)
{
fprintf( stderr, "main will wait\n");
data.condition.wait(lock);
fprintf( stderr, "main was notified\n");
}
fprintf( stderr, "main data.awoken == 1\n");
BOOST_CHECK(lock ? true : false);
BOOST_CHECK_EQUAL(data.awoken, 1);
data.notified++;
data.condition.notify_one();
while (data.awoken != 2)
data.condition.wait(lock);
BOOST_CHECK(lock ? true : false);
BOOST_CHECK_EQUAL(data.awoken, 2);
data.notified++;
data.condition.notify_one();
while (data.awoken != 3)
data.condition.wait(lock);
BOOST_CHECK(lock ? true : false);
BOOST_CHECK_EQUAL(data.awoken, 3);
data.notified++;
data.condition.notify_one();
while (data.awoken != 4)
data.condition.wait(lock);
BOOST_CHECK(lock ? true : false);
BOOST_CHECK_EQUAL(data.awoken, 4);
data.notified++;
data.condition.notify_one();
while (data.awoken != 5)
data.condition.wait(lock);
BOOST_CHECK(lock ? true : false);
BOOST_CHECK_EQUAL(data.awoken, 5);
}
s.join();
BOOST_CHECK_EQUAL(data.awoken, 5);
}
void test_one_waiter_notify_one()
{
value = 0;
stm::mutex mtx;
stm::condition cond;
stm::fiber s1(
boost::bind(
wait_fn,
boost::ref( mtx),
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 0, value);
stm::fiber s2(
boost::bind(
notify_one_fn,
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( stm::run() );
BOOST_CHECK_EQUAL( 1, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 1, value);
}
void test_two_waiter_notify_one()
{
value = 0;
stm::mutex mtx;
stm::condition cond;
stm::fiber s1(
boost::bind(
wait_fn,
boost::ref( mtx),
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 0, value);
stm::fiber s2(
boost::bind(
wait_fn,
boost::ref( mtx),
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 0, value);
stm::fiber s3(
boost::bind(
notify_one_fn,
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( stm::run() );
BOOST_CHECK_EQUAL( 1, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 1, value);
stm::fiber s4(
boost::bind(
notify_one_fn,
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 1, value);
BOOST_CHECK( stm::run() );
BOOST_CHECK_EQUAL( 2, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 2, value);
}
void test_two_waiter_notify_all()
{
value = 0;
stm::mutex mtx;
stm::condition cond;
stm::fiber s1(
boost::bind(
wait_fn,
boost::ref( mtx),
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 0, value);
stm::fiber s2(
boost::bind(
wait_fn,
boost::ref( mtx),
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 0, value);
stm::fiber s3(
boost::bind(
notify_all_fn,
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 0, value);
BOOST_CHECK( stm::run() );
BOOST_CHECK_EQUAL( 1, value);
BOOST_CHECK( stm::run() );
BOOST_CHECK_EQUAL( 2, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 2, value);
stm::fiber s4(
boost::bind(
wait_fn,
boost::ref( mtx),
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 2, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 2, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 2, value);
stm::fiber s5(
boost::bind(
notify_all_fn,
boost::ref( cond) ) );
BOOST_CHECK_EQUAL( 2, value);
BOOST_CHECK( stm::run() );
BOOST_CHECK_EQUAL( 3, value);
BOOST_CHECK( ! stm::run() );
BOOST_CHECK_EQUAL( 3, value);
}
void test_condition_waits()
{ do_test_condition_waits(); }
boost::unit_test::test_suite * init_unit_test_suite( int, char* [])
{
boost::unit_test::test_suite * test =
BOOST_TEST_SUITE("Boost.Stratified: condition test suite");
test->add( BOOST_TEST_CASE( & test_one_waiter_notify_one) );
test->add( BOOST_TEST_CASE( & test_two_waiter_notify_one) );
test->add( BOOST_TEST_CASE( & test_two_waiter_notify_all) );
test->add( BOOST_TEST_CASE( & test_condition_waits) );
return test;
}
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