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120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/*
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* msvcrt onexit functions
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*
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* Copyright 2016 Nikolay Sivov
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/* these functions are part of the import lib for compatibility with the Mingw runtime */
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#if 0
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#pragma makedep implib
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#endif
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#include <process.h>
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#include "msvcrt.h"
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#include "mtdll.h"
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/*********************************************************************
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* _initialize_onexit_table (UCRTBASE.@)
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*/
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int __cdecl _initialize_onexit_table(_onexit_table_t *table)
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{
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if (!table)
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return -1;
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if (table->_first == table->_end)
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table->_last = table->_end = table->_first = NULL;
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return 0;
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}
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/*********************************************************************
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* _register_onexit_function (UCRTBASE.@)
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*/
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int __cdecl _register_onexit_function(_onexit_table_t *table, _onexit_t func)
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{
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if (!table)
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return -1;
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_lock(_EXIT_LOCK1);
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if (!table->_first)
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{
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table->_first = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 32 * sizeof(void *));
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if (!table->_first)
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{
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_unlock(_EXIT_LOCK1);
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return -1;
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}
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table->_last = table->_first;
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table->_end = table->_first + 32;
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}
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/* grow if full */
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if (table->_last == table->_end)
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{
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int len = table->_end - table->_first;
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_PVFV *tmp = HeapReAlloc(GetProcessHeap(), 0, table->_first, 2 * len * sizeof(void *));
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if (!tmp)
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{
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_unlock(_EXIT_LOCK1);
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return -1;
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}
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table->_first = tmp;
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table->_end = table->_first + 2 * len;
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table->_last = table->_first + len;
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}
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*table->_last = (_PVFV)func;
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table->_last++;
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_unlock(_EXIT_LOCK1);
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return 0;
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}
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/*********************************************************************
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* _execute_onexit_table (UCRTBASE.@)
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*/
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int __cdecl _execute_onexit_table(_onexit_table_t *table)
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{
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_PVFV *func;
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_onexit_table_t copy;
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if (!table)
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return -1;
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_lock(_EXIT_LOCK1);
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if (!table->_first || table->_first >= table->_last)
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{
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_unlock(_EXIT_LOCK1);
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return 0;
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}
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copy._first = table->_first;
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copy._last = table->_last;
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copy._end = table->_end;
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memset(table, 0, sizeof(*table));
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_initialize_onexit_table(table);
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_unlock(_EXIT_LOCK1);
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for (func = copy._last - 1; func >= copy._first; func--)
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{
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if (*func)
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(*func)();
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}
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HeapFree(GetProcessHeap(), 0, copy._first);
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return 0;
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}
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