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Code Issues

Fixed CORE-2942: Huge (>10Gb) memory consumption by some fb_inet_server processes

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This commit is contained in:
alexpeshkoff 2010-03-25 10:33:28 +00:00
parent 7c5447a930
commit 2e4fea1c04
1 changed files with 44 additions and 42 deletions
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86
src/lock/lock.cpp
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@ -214,7 +214,10 @@ LockManager::LockManager(const Firebird::string& id)
LockManager::~LockManager() LockManager::~LockManager()
{ {
const SRQ_PTR process_offset = m_processOffset; const SRQ_PTR process_offset = m_processOffset;
m_processOffset = 0; { // guardian's scope
Firebird::MutexLockGuard guard(m_localMutex);
m_processOffset = 0;
}
ISC_STATUS_ARRAY local_status; ISC_STATUS_ARRAY local_status;
@ -1463,56 +1466,55 @@ void LockManager::blocking_action_thread()
{ {
while (true) while (true)
{ {
m_localMutex.enter(); SLONG value;
{ // guardian's scope
Firebird::MutexLockGuard guard(m_localMutex);
// See if the main thread has requested us to go away
if (!m_processOffset || m_process->prc_process_id != PID)
{
if (atStartup)
{
m_startupSemaphore.release();
}
break;
}
value = ISC_event_clear(&m_process->prc_blocking);
DEBUG_DELAY;
Firebird::HalfStaticArray<SRQ_PTR, 4> blocking_owners;
acquire_shmem(DUMMY_OWNER);
const prc* const process = (prc*) SRQ_ABS_PTR(m_processOffset);
srq* lock_srq;
SRQ_LOOP(process->prc_owners, lock_srq)
{
own* owner = (own*) ((UCHAR*) lock_srq - OFFSET(own*, own_prc_owners));
blocking_owners.add(SRQ_REL_PTR(owner));
}
release_mutex();
while (blocking_owners.getCount() && m_processOffset)
{
const SRQ_PTR owner_offset = blocking_owners.pop();
acquire_shmem(owner_offset);
blocking_action(NULL, owner_offset, (SRQ_PTR) NULL);
release_shmem(owner_offset);
}
// See if the main thread has requested us to go away
if (!m_processOffset || m_process->prc_process_id != PID)
{
if (atStartup) if (atStartup)
{ {
atStartup = false;
m_startupSemaphore.release(); m_startupSemaphore.release();
} }
break;
} }
const SLONG value = ISC_event_clear(&m_process->prc_blocking);
DEBUG_DELAY;
Firebird::HalfStaticArray<SRQ_PTR, 4> blocking_owners;
acquire_shmem(DUMMY_OWNER);
const prc* const process = (prc*) SRQ_ABS_PTR(m_processOffset);
srq* lock_srq;
SRQ_LOOP(process->prc_owners, lock_srq)
{
own* owner = (own*) ((UCHAR*) lock_srq - OFFSET(own*, own_prc_owners));
blocking_owners.add(SRQ_REL_PTR(owner));
}
release_mutex();
while (blocking_owners.getCount() && m_processOffset)
{
const SRQ_PTR owner_offset = blocking_owners.pop();
acquire_shmem(owner_offset);
blocking_action(NULL, owner_offset, (SRQ_PTR) NULL);
release_shmem(owner_offset);
}
if (atStartup)
{
atStartup = false;
m_startupSemaphore.release();
}
m_localMutex.leave();
ISC_event_wait(&m_process->prc_blocking, value, 0); ISC_event_wait(&m_process->prc_blocking, value, 0);
} }
m_localMutex.leave();
} }
catch (const Firebird::Exception& x) catch (const Firebird::Exception& x)
{ {