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No boost condition (#2822)

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This patch replaces boost primitives with stdlib counterparts.
This commit is contained in:
Leonid Fedorov
2023-04-22 00:42:45 +03:00
committed by GitHub
parent 3ce19abdae
commit f916e64927
245 changed files with 1261 additions and 2007 deletions
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323
utils/rwlock/rwlock_local.cpp
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@ -1,323 +0,0 @@
/* Copyright (C) 2014 InfiniDB, Inc.
This program 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; version 2 of
the License.
This program 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 program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA. */
/*****************************************************************************
* $Id$
*
****************************************************************************/
/*
* Brief description of the file contents
*
* More detailed description
*/
#include <iostream>
using namespace std;
#include <boost/thread.hpp>
#include <boost/thread/condition.hpp>
using namespace boost;
#define RWLOCK_LOCAL_DLLEXPORT
#include "rwlock_local.h"
#undef RWLOCK_LOCAL_DLLEXPORT
// semaphore numbers
#define MUTEX 0
#define READERS 1
#define WRITERS 2
#ifdef DEBUG
using namespace std;
#define PRINTSTATE() \
cerr << " reading = " << state.reading << endl \
<< " writing = " << state.writing << endl \
<< " readerswaiting = " << state.readerswaiting << endl \
<< " writerswaiting = " << state.writerswaiting << endl;
#define CHECKSAFETY() \
if (!((state.reading == 0 && (state.writing == 0 || state.writing == 1)) || \
(state.reading > 0 && state.writing == 0))) \
{ \
cerr << "RWLock_local::" << __func__ << ": safety invariant violation" << endl; \
PRINTSTATE(); \
throw std::logic_error("RWLock_local: safety invariant violation"); \
}
#define CHECKLIVENESS() \
if (!((!(state.readerswaiting > 0 || state.writerswaiting > 0) || \
(state.reading > 0 || state.writing > 0)) || \
(!(state.reading == 0 && state.writing == 0) || \
(state.readerswaiting == 0 && state.writerswaiting == 0)))) \
{ \
cerr << "RWLock_local::" << __func__ << ": liveness invariant violation" << endl; \
PRINTSTATE(); \
throw std::logic_error("RWLock_local: liveness invariant violation"); \
}
#undef CHECKLIVENESS
#define CHECKLIVENESS()
#endif
namespace rwlock
{
RWLock_local::RWLock_local()
{
state.reading = 0;
state.readerswaiting = 0;
state.writing = 0;
state.writerswaiting = 0;
}
RWLock_local::~RWLock_local()
{
}
void RWLock_local::read_lock()
{
mutex.lock();
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
if (state.writerswaiting > 0 || state.writing > 0)
{
state.readerswaiting++;
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
while (state.writerswaiting > 0 || state.writing > 0)
okToRead.wait(mutex);
state.readerswaiting--;
}
state.reading++;
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
mutex.unlock();
}
void RWLock_local::read_unlock()
{
mutex.lock();
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
state.reading--;
if (state.writerswaiting > 0 && state.reading == 0)
okToWrite.notify_one();
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
mutex.unlock();
}
void RWLock_local::write_lock()
{
mutex.lock();
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
if (state.writing > 0 || state.reading > 0)
{
state.writerswaiting++;
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
while (state.writing > 0 || state.reading > 0)
okToWrite.wait(mutex);
state.writerswaiting--;
}
state.writing++;
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
}
void RWLock_local::write_unlock()
{
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
state.writing--;
if (state.writerswaiting > 0)
okToWrite.notify_one();
else if (state.readerswaiting > 0)
okToRead.notify_all();
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
mutex.unlock();
}
void RWLock_local::upgrade_to_write()
{
mutex.lock();
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
state.reading--;
// try to cut in line
if (state.reading == 0)
{
state.writing++;
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
return;
}
// cut & paste from write_lock()
if (state.writing > 0 || state.reading > 0)
{
state.writerswaiting++;
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
while (state.writing > 0 || state.reading > 0)
okToWrite.wait(mutex);
state.writerswaiting--;
}
state.writing++;
}
/* It's safe (and necessary) to simply convert this writer to a reader without
blocking */
void RWLock_local::downgrade_to_read()
{
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
state.writing--;
if (state.readerswaiting > 0)
okToRead.notify_all();
state.reading++;
#ifdef DEBUG
CHECKSAFETY();
CHECKLIVENESS();
#endif
mutex.unlock();
}
void RWLock_local::lock()
{
mutex.lock();
}
void RWLock_local::unlock()
{
mutex.unlock();
}
int RWLock_local::getWriting()
{
return state.writing;
}
int RWLock_local::getReading()
{
return state.reading;
}
int RWLock_local::getWritersWaiting()
{
return state.writerswaiting;
}
int RWLock_local::getReadersWaiting()
{
return state.readerswaiting;
}
ScopedRWLock_local::ScopedRWLock_local(RWLock_local* l, rwlock_mode m)
{
thelock = l;
mode = m;
assert(m == R || m == W);
locked = false;
lock();
}
ScopedRWLock_local::~ScopedRWLock_local()
{
if (locked)
unlock();
}
void ScopedRWLock_local::lock()
{
if (mode == R)
thelock->read_lock();
else
thelock->write_lock();
locked = true;
}
void ScopedRWLock_local::unlock()
{
if (mode == R)
thelock->read_unlock();
else
thelock->write_unlock();
locked = false;
}
} // namespace rwlock