dyn_thread_ctx.hpp (2955B)
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/* Relacy Race Detector
* Copyright (c) 2008-2010, Dmitry S. Vyukov
* All rights reserved.
* This software is provided AS-IS with no warranty, either express or implied.
* This software is distributed under a license and may not be copied,
* modified or distributed except as expressly authorized under the
* terms of the license contained in the file LICENSE.TXT in this distribution.
*/
#ifndef RL_DYN_THREAD_CTX_HPP
#define RL_DYN_THREAD_CTX_HPP
#ifdef _MSC_VER
# pragma once
#endif
#include "base.hpp"
#include "waitset.hpp"
#include "sync_var.hpp"
#include "stdlib/semaphore.hpp"
namespace rl
{
template<thread_id_t thread_count>
class thread_sync_object : public win_waitable_object
{
public:
thread_sync_object()
{
}
void iteration_begin()
{
finished_ = false;
sync_.iteration_begin();
RL_VERIFY(!ws_);
}
void on_create()
{
sync_.release(ctx().threadx_);
}
void on_start()
{
RL_VERIFY(finished_ == false);
context& c = ctx();
sync_.acquire(c.threadx_);
}
void on_finish()
{
RL_VERIFY(finished_ == false);
context& c = ctx();
finished_ = true;
sync_.release(c.threadx_);
ws_.unpark_all(c, $);
}
private:
bool finished_;
waitset<thread_count> ws_;
sync_var<thread_count> sync_;
virtual void deinit(debug_info_param info)
{
(void)info;
}
virtual sema_wakeup_reason wait(bool try_wait, bool is_timed, debug_info_param info)
{
context& c = ctx();
if (finished_)
{
sync_.acquire(c.threadx_);
return sema_wakeup_reason_success;
}
else if (try_wait)
{
sync_.acquire(c.threadx_);
return sema_wakeup_reason_failed;
}
else
{
unpark_reason reason = ws_.park_current(c, is_timed, false, false, info);
sync_.acquire(c.threadx_);
if (reason == unpark_reason_normal)
return sema_wakeup_reason_success;
else if (reason == unpark_reason_timeout)
return sema_wakeup_reason_timeout;
RL_VERIFY(false);
return sema_wakeup_reason_failed;
}
}
virtual bool signal(debug_info_param info)
{
RL_ASSERT_IMPL(false, test_result_thread_signal, "trying to signal a thread", info);
return false;
}
virtual bool is_signaled(debug_info_param info)
{
(void)info;
return finished_;
}
virtual void memory_acquire(debug_info_param info)
{
(void)info;
sync_.acquire(ctx().threadx_);
}
virtual void* prepare_wait(debug_info_param info)
{
(void)info;
return &ws_;
}
};
}
#endif
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