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/* Copyright (c) 2003-2005 MySQL AB
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 */
#include "SimulatedBlock.hpp"
#include "Mutex.hpp"
#include <signaldata/UtilLock.hpp>
SimulatedBlock::MutexManager::MutexManager(class SimulatedBlock & block)
: m_block(block),
m_activeMutexes(m_mutexPool) {
}
bool
SimulatedBlock::MutexManager::setSize(Uint32 maxNoOfActiveMutexes){
return m_mutexPool.setSize(maxNoOfActiveMutexes);
}
Uint32
SimulatedBlock::MutexManager::getSize() const {
return m_mutexPool.getSize();
}
bool
SimulatedBlock::MutexManager::seize(ActiveMutexPtr& ptr){
return m_activeMutexes.seize(ptr);
}
void
SimulatedBlock::MutexManager::release(Uint32 activeMutexPtrI){
m_activeMutexes.release(activeMutexPtrI);
}
void
SimulatedBlock::MutexManager::getPtr(ActiveMutexPtr& ptr){
m_activeMutexes.getPtr(ptr);
}
BlockReference
SimulatedBlock::MutexManager::reference() const {
return m_block.reference();
}
void
SimulatedBlock::MutexManager::progError(int line,
int err_code,
const char* extra)
{
m_block.progError(line, err_code, extra);
}
void
SimulatedBlock::MutexManager::create(Signal* signal, ActiveMutexPtr& ptr){
UtilCreateLockReq * req = (UtilCreateLockReq*)signal->getDataPtrSend();
req->senderData = ptr.i;
req->senderRef = m_block.reference();
req->lockId = ptr.p->m_mutexId;
req->lockType = UtilCreateLockReq::Mutex;
m_block.sendSignal(DBUTIL_REF,
GSN_UTIL_CREATE_LOCK_REQ,
signal,
UtilCreateLockReq::SignalLength,
JBB);
ptr.p->m_gsn = GSN_UTIL_CREATE_LOCK_REQ;
}
void
SimulatedBlock::MutexManager::execUTIL_CREATE_LOCK_REF(Signal* signal){
UtilCreateLockRef * ref = (UtilCreateLockRef*)signal->getDataPtr();
ActiveMutexPtr ptr;
m_activeMutexes.getPtr(ptr, ref->senderData);
ndbrequire(ptr.p->m_gsn == GSN_UTIL_CREATE_LOCK_REQ);
ndbrequire(ptr.p->m_mutexId == ref->lockId);
ptr.p->m_gsn = 0;
m_block.execute(signal, ptr.p->m_callback, ref->errorCode);
}
void
SimulatedBlock::MutexManager::execUTIL_CREATE_LOCK_CONF(Signal* signal){
UtilCreateLockConf * conf = (UtilCreateLockConf*)signal->getDataPtr();
ActiveMutexPtr ptr;
m_activeMutexes.getPtr(ptr, conf->senderData);
ndbrequire(ptr.p->m_gsn == GSN_UTIL_CREATE_LOCK_REQ);
ndbrequire(ptr.p->m_mutexId == conf->lockId);
ptr.p->m_gsn = 0;
m_block.execute(signal, ptr.p->m_callback, 0);
}
void
SimulatedBlock::MutexManager::destroy(Signal* signal, ActiveMutexPtr& ptr){
UtilDestroyLockReq * req = (UtilDestroyLockReq*)signal->getDataPtrSend();
req->senderData = ptr.i;
req->senderRef = m_block.reference();
req->lockId = ptr.p->m_mutexId;
req->lockKey = ptr.p->m_mutexKey;
m_block.sendSignal(DBUTIL_REF,
GSN_UTIL_DESTROY_LOCK_REQ,
signal,
UtilDestroyLockReq::SignalLength,
JBB);
ptr.p->m_gsn = GSN_UTIL_DESTROY_LOCK_REQ;
}
void
SimulatedBlock::MutexManager::execUTIL_DESTORY_LOCK_REF(Signal* signal){
UtilDestroyLockRef * ref = (UtilDestroyLockRef*)signal->getDataPtr();
ActiveMutexPtr ptr;
m_activeMutexes.getPtr(ptr, ref->senderData);
ndbrequire(ptr.p->m_gsn == GSN_UTIL_DESTROY_LOCK_REQ);
ndbrequire(ptr.p->m_mutexId == ref->lockId);
ptr.p->m_gsn = 0;
m_block.execute(signal, ptr.p->m_callback, ref->errorCode);
}
void
SimulatedBlock::MutexManager::execUTIL_DESTORY_LOCK_CONF(Signal* signal){
UtilDestroyLockConf * conf = (UtilDestroyLockConf*)signal->getDataPtr();
ActiveMutexPtr ptr;
m_activeMutexes.getPtr(ptr, conf->senderData);
ndbrequire(ptr.p->m_gsn == GSN_UTIL_DESTROY_LOCK_REQ);
ndbrequire(ptr.p->m_mutexId == conf->lockId);
ptr.p->m_gsn = 0;
m_block.execute(signal, ptr.p->m_callback, 0);
}
void
SimulatedBlock::MutexManager::lock(Signal* signal, ActiveMutexPtr& ptr){
UtilLockReq * req = (UtilLockReq*)signal->getDataPtrSend();
req->senderData = ptr.i;
req->senderRef = m_block.reference();
req->lockId = ptr.p->m_mutexId;
req->requestInfo = 0;
m_block.sendSignal(DBUTIL_REF,
GSN_UTIL_LOCK_REQ,
signal,
UtilLockReq::SignalLength,
JBB);
ptr.p->m_gsn = GSN_UTIL_LOCK_REQ;
}
void
SimulatedBlock::MutexManager::trylock(Signal* signal, ActiveMutexPtr& ptr){
UtilLockReq * req = (UtilLockReq*)signal->getDataPtrSend();
req->senderData = ptr.i;
req->senderRef = m_block.reference();
req->lockId = ptr.p->m_mutexId;
req->requestInfo = UtilLockReq::TryLock;
m_block.sendSignal(DBUTIL_REF,
GSN_UTIL_LOCK_REQ,
signal,
UtilLockReq::SignalLength,
JBB);
ptr.p->m_gsn = GSN_UTIL_LOCK_REQ;
}
void
SimulatedBlock::MutexManager::execUTIL_LOCK_REF(Signal* signal){
UtilLockRef * ref = (UtilLockRef*)signal->getDataPtr();
ActiveMutexPtr ptr;
m_activeMutexes.getPtr(ptr, ref->senderData);
ndbrequire(ptr.p->m_gsn == GSN_UTIL_LOCK_REQ);
ndbrequire(ptr.p->m_mutexId == ref->lockId);
ptr.p->m_gsn = 0;
m_block.execute(signal, ptr.p->m_callback, ref->errorCode);
}
void
SimulatedBlock::MutexManager::execUTIL_LOCK_CONF(Signal* signal){
UtilLockConf * conf = (UtilLockConf*)signal->getDataPtr();
ActiveMutexPtr ptr;
m_activeMutexes.getPtr(ptr, conf->senderData);
ndbrequire(ptr.p->m_gsn == GSN_UTIL_LOCK_REQ);
ndbrequire(ptr.p->m_mutexId == conf->lockId);
ptr.p->m_mutexKey = conf->lockKey;
ptr.p->m_gsn = 0;
m_block.execute(signal, ptr.p->m_callback, 0);
}
void
SimulatedBlock::MutexManager::unlock(Signal* signal, ActiveMutexPtr& ptr){
UtilUnlockReq * req = (UtilUnlockReq*)signal->getDataPtrSend();
req->senderData = ptr.i;
req->senderRef = m_block.reference();
req->lockId = ptr.p->m_mutexId;
req->lockKey = ptr.p->m_mutexKey;
m_block.sendSignal(DBUTIL_REF,
GSN_UTIL_UNLOCK_REQ,
signal,
UtilUnlockReq::SignalLength,
JBB);
ptr.p->m_gsn = GSN_UTIL_UNLOCK_REQ;
}
void
SimulatedBlock::MutexManager::execUTIL_UNLOCK_REF(Signal* signal){
UtilUnlockRef * ref = (UtilUnlockRef*)signal->getDataPtr();
ActiveMutexPtr ptr;
m_activeMutexes.getPtr(ptr, ref->senderData);
ndbrequire(ptr.p->m_gsn == GSN_UTIL_UNLOCK_REQ);
ndbrequire(ptr.p->m_mutexId == ref->lockId);
ptr.p->m_gsn = 0;
m_block.execute(signal, ptr.p->m_callback, ref->errorCode);
}
void
SimulatedBlock::MutexManager::execUTIL_UNLOCK_CONF(Signal* signal){
UtilUnlockConf * conf = (UtilUnlockConf*)signal->getDataPtr();
ActiveMutexPtr ptr;
m_activeMutexes.getPtr(ptr, conf->senderData);
ndbrequire(ptr.p->m_gsn == GSN_UTIL_UNLOCK_REQ);
ndbrequire(ptr.p->m_mutexId == conf->lockId);
ptr.p->m_gsn = 0;
m_block.execute(signal, ptr.p->m_callback, 0);
}
void
Mutex::release(SimulatedBlock::MutexManager& mgr,
Uint32 activePtrI, Uint32 mutexId){
SimulatedBlock::MutexManager::ActiveMutexPtr ptr;
ptr.i = activePtrI;
mgr.getPtr(ptr);
if(ptr.p->m_gsn == 0 && ptr.p->m_mutexId == mutexId){
mgr.release(activePtrI);
return;
}
if(ptr.p->m_mutexId != mutexId)
ErrorReporter::handleAssert("MutexHandle::release invalid handle",
__FILE__, __LINE__);
ErrorReporter::handleAssert("MutexHandle::release of mutex inuse",
__FILE__, __LINE__);
}
void
Mutex::unlock(){
if(!m_ptr.isNull()){
m_mgr.getPtr(m_ptr);
if(m_ptr.p->m_mutexId == m_mutexId){
SimulatedBlock::Callback c =
{ &SimulatedBlock::ignoreMutexUnlockCallback, m_ptr.i };
m_ptr.p->m_callback = c;
m_mgr.unlock(m_signal, m_ptr);
m_ptr.setNull(); // Remove reference
}
}
}
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