mirror of https://github.com/minetest/minetest.git
86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/******************************************************************************/
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/******************************************************************************/
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/* WARNING!!!! do NOT add this header in any include file or any code file */
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/* not being a modapi file!!!!!!!! */
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/******************************************************************************/
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/******************************************************************************/
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#pragma once
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#include <thread>
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#include "common/c_internal.h"
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#include "cpp_api/s_base.h"
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#include "threading/mutex_auto_lock.h"
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#ifdef SCRIPTAPI_LOCK_DEBUG
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#include <cassert>
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class LockChecker {
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public:
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LockChecker(int *recursion_counter, std::thread::id *owning_thread)
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{
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m_lock_recursion_counter = recursion_counter;
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m_owning_thread = owning_thread;
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m_original_level = *recursion_counter;
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if (*m_lock_recursion_counter > 0) {
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assert(*m_owning_thread == std::this_thread::get_id());
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} else {
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*m_owning_thread = std::this_thread::get_id();
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}
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(*m_lock_recursion_counter)++;
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}
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~LockChecker()
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{
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assert(*m_owning_thread == std::this_thread::get_id());
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assert(*m_lock_recursion_counter > 0);
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(*m_lock_recursion_counter)--;
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assert(*m_lock_recursion_counter == m_original_level);
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}
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private:
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int *m_lock_recursion_counter;
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int m_original_level;
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std::thread::id *m_owning_thread;
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};
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#define SCRIPTAPI_LOCK_CHECK \
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LockChecker scriptlock_checker( \
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&this->m_lock_recursion_count, \
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&this->m_owning_thread)
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#else
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#define SCRIPTAPI_LOCK_CHECK while(0)
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#endif
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#define SCRIPTAPI_PRECHECKHEADER \
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RecursiveMutexAutoLock scriptlock(this->m_luastackmutex); \
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SCRIPTAPI_LOCK_CHECK; \
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realityCheck(); \
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lua_State *L = getStack(); \
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assert(lua_checkstack(L, 20)); \
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StackUnroller stack_unroller(L);
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