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/* Copyright (c) 2009 PrimeBase Technologies GmbH
*
* PrimeBase XT
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* 2009-01-20 Vladimir Kolesnikov
*
* H&G2JCtL
*/
#ifndef __xt_locklist_h__
#define __xt_locklist_h__
/*
* XT_THREAD_LOCK_INFO and DEBUG_LOCKING code must be updated to avoid calls to xt_get_self() as it can be called before hton->slot is
* assigned by MySQL which is used by xt_get_self()
*/
#ifdef DEBUG
//#define XT_THREAD_LOCK_INFO
#ifndef XT_WIN
/* We need DEBUG_LOCKING in order to enable pthread function wrappers */
//#define DEBUG_LOCKING
#endif
#endif
#include "xt_defs.h"
struct XTThread;
struct XTSpinLock;
struct XTRWMutex;
struct xt_mutex_struct;
struct xt_rwlock_struct;
struct XTFastLock;
struct XTXSMutexLock;
struct XTSpinXSLock;
struct XTAtomicRWLock;
struct XTSkewRWLock;
#ifdef XT_THREAD_LOCK_INFO
#define XT_THREAD_LOCK_INFO_MAX_COUNT 50
#ifdef XT_WIN
#define LOCKLIST_ARG_SUFFIX(name) #name " in " __FUNCTION__ "() at " __FILE__ ":" QUOTE(__LINE__)
#else
#define LOCKLIST_ARG_SUFFIX(name) #name " in " QUOTE(__PRETTY_FUNCTION__) "() at " QUOTE(__FILE__) ":" QUOTE(__LINE__)
#endif
/*
* An instance of XTThreadLockInfo class keeps information about a lock kept by a thread.
* There's a list of XTThreadLockInfo instances per thread. An instance can be included
* into several thread lists in case of shared locks.
*/
typedef struct XTThreadLockInfo {
enum LockType { SPIN_LOCK, RW_MUTEX, MUTEX, RW_LOCK, FAST_LOCK, FAST_RW_LOCK, SPIN_RW_LOCK, ATOMIC_RW_LOCK, SKEW_RW_LOCK };
LockType li_lock_type;
union {
XTSpinLock *li_spin_lock; // SPIN_LOCK
XTRWMutex *li_rw_mutex; // RW_MUTEX
XTFastLock *li_fast_lock; // FAST_LOCK
XTXSMutexLock *li_fast_rwlock; // FAST_RW_LOCK
XTSpinXSLock *li_spin_rwlock; // SPIN_RW_LOCK
XTAtomicRWLock *li_atomic_rwlock; // ATOMIC_RW_LOCK
xt_mutex_struct *li_mutex; // MUTEX
xt_rwlock_struct *li_rwlock; // RW_LOCK
XTSkewRWLock *li_skew_rwlock; // SKEW_RW_LOCK
};
}
XTThreadLockInfoRec, *XTThreadLockInfoPtr;
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, XTSpinLock *lock);
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, XTRWMutex *lock);
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, XTFastLock *lock);
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, XTXSMutexLock *lock);
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, XTSpinXSLock *lock);
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, XTAtomicRWLock *lock);
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, xt_mutex_struct *lock);
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, xt_rwlock_struct *lock);
void xt_thread_lock_info_init(XTThreadLockInfoPtr ptr, XTSkewRWLock *lock);
void xt_thread_lock_info_free(XTThreadLockInfoPtr ptr);
void xt_thread_lock_info_add_owner (XTThreadLockInfoPtr ptr);
void xt_thread_lock_info_release_owner (XTThreadLockInfoPtr ptr);
void xt_trace_thread_locks(XTThread *self);
#endif // XT_THREAD_LOCK_INFO
#endif // __xt_locklist_h__
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