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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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.
*/
/******************************************************************************/
/******************************************************************************/
/* WARNING!!!! do NOT add this header in any include file or any code file */
/* not being a modapi file!!!!!!!! */
/******************************************************************************/
/******************************************************************************/
#pragma once
#include <thread>
#include "common/c_internal.h"
#include "cpp_api/s_base.h"
#include "threading/mutex_auto_lock.h"
#ifdef SCRIPTAPI_LOCK_DEBUG
#include <cassert>
class LockChecker {
public:
LockChecker(int *recursion_counter, std::thread::id *owning_thread)
{
m_lock_recursion_counter = recursion_counter;
m_owning_thread = owning_thread;
m_original_level = *recursion_counter;
if (*m_lock_recursion_counter > 0) {
assert(*m_owning_thread == std::this_thread::get_id());
} else {
*m_owning_thread = std::this_thread::get_id();
}
(*m_lock_recursion_counter)++;
}
~LockChecker()
{
assert(*m_owning_thread == std::this_thread::get_id());
assert(*m_lock_recursion_counter > 0);
(*m_lock_recursion_counter)--;
assert(*m_lock_recursion_counter == m_original_level);
}
private:
int *m_lock_recursion_counter;
int m_original_level;
std::thread::id *m_owning_thread;
};
#define SCRIPTAPI_LOCK_CHECK \
LockChecker scriptlock_checker( \
&this->m_lock_recursion_count, \
&this->m_owning_thread)
#else
#define SCRIPTAPI_LOCK_CHECK while(0)
#endif
#define SCRIPTAPI_PRECHECKHEADER \
RecursiveMutexAutoLock scriptlock(this->m_luastackmutex); \
SCRIPTAPI_LOCK_CHECK; \
realityCheck(); \
lua_State *L = getStack(); \
assert(lua_checkstack(L, 20)); \
StackUnroller stack_unroller(L);
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