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// Copyright (C) 2001-2003
// William E. Kempf
// Copyright (C) 2007-8 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)
#if !defined(UTIL_INL_WEK01242003)
#define UTIL_INL_WEK01242003
#include <boost/thread/xtime.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/condition.hpp>
#include <boost/thread/thread.hpp>
#ifndef DEFAULT_EXECUTION_MONITOR_TYPE
# define DEFAULT_EXECUTION_MONITOR_TYPE execution_monitor::use_condition
#endif
// boostinspect:nounnamed
namespace
{
inline boost::xtime delay(int secs, int msecs=0, int nsecs=0)
{
const int MILLISECONDS_PER_SECOND = 1000;
const int NANOSECONDS_PER_SECOND = 1000000000;
const int NANOSECONDS_PER_MILLISECOND = 1000000;
boost::xtime xt;
if (boost::TIME_UTC != boost::xtime_get (&xt, boost::TIME_UTC))
BOOST_ERROR ("boost::xtime_get != boost::TIME_UTC");
nsecs += xt.nsec;
msecs += nsecs / NANOSECONDS_PER_MILLISECOND;
secs += msecs / MILLISECONDS_PER_SECOND;
nsecs += (msecs % MILLISECONDS_PER_SECOND) * NANOSECONDS_PER_MILLISECOND;
xt.nsec = nsecs % NANOSECONDS_PER_SECOND;
xt.sec += secs + (nsecs / NANOSECONDS_PER_SECOND);
return xt;
}
inline bool in_range(const boost::xtime& xt, int secs=1)
{
boost::xtime min = delay(-secs);
boost::xtime max = delay(0);
return (boost::xtime_cmp(xt, min) >= 0) &&
(boost::xtime_cmp(xt, max) <= 0);
}
class execution_monitor
{
public:
enum wait_type { use_sleep_only, use_mutex, use_condition };
execution_monitor(wait_type type, int secs)
: done(false), type(type), secs(secs) { }
void start()
{
if (type != use_sleep_only) {
boost::mutex::scoped_lock lock(mutex); done = false;
} else {
done = false;
}
}
void finish()
{
if (type != use_sleep_only) {
boost::mutex::scoped_lock lock(mutex);
done = true;
if (type == use_condition)
cond.notify_one();
} else {
done = true;
}
}
bool wait()
{
boost::xtime xt = delay(secs);
if (type != use_condition)
boost::thread::sleep(xt);
if (type != use_sleep_only) {
boost::mutex::scoped_lock lock(mutex);
while (type == use_condition && !done) {
if (!cond.timed_wait(lock, xt))
break;
}
return done;
}
return done;
}
private:
boost::mutex mutex;
boost::condition cond;
bool done;
wait_type type;
int secs;
};
}
namespace thread_detail_anon
{
template <typename F>
class indirect_adapter
{
public:
indirect_adapter(F func, execution_monitor& monitor)
: func(func), monitor(monitor) { }
void operator()() const
{
try
{
boost::thread thrd(func);
thrd.join();
}
catch (...)
{
monitor.finish();
throw;
}
monitor.finish();
}
private:
F func;
execution_monitor& monitor;
void operator=(indirect_adapter&);
};
}
// boostinspect:nounnamed
namespace
{
template <typename F>
void timed_test(F func, int secs,
execution_monitor::wait_type type=DEFAULT_EXECUTION_MONITOR_TYPE)
{
execution_monitor monitor(type, secs);
thread_detail_anon::indirect_adapter<F> ifunc(func, monitor);
monitor.start();
boost::thread thrd(ifunc);
BOOST_REQUIRE_MESSAGE(monitor.wait(),
"Timed test didn't complete in time, possible deadlock.");
}
}
namespace thread_detail_anon
{
template <typename F, typename T>
class thread_binder
{
public:
thread_binder(const F& func, const T& param)
: func(func), param(param) { }
void operator()() const { func(param); }
private:
F func;
T param;
};
}
// boostinspect:nounnamed
namespace
{
template <typename F, typename T>
thread_detail_anon::thread_binder<F, T> bind(const F& func, const T& param)
{
return thread_detail_anon::thread_binder<F, T>(func, param);
}
}
namespace thread_detail_anon
{
template <typename R, typename T>
class thread_member_binder
{
public:
thread_member_binder(R (T::*func)(), T& param)
: func(func), param(param) { }
void operator()() const { (param.*func)(); }
private:
void operator=(thread_member_binder&);
R (T::*func)();
T& param;
};
}
// boostinspect:nounnamed
namespace
{
template <typename R, typename T>
thread_detail_anon::thread_member_binder<R, T> bind(R (T::*func)(), T& param)
{
return thread_detail_anon::thread_member_binder<R, T>(func, param);
}
} // namespace
#endif
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