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![Eric Pouech](/assets/img/avatar_default.png)
Signed-off-by: Eric Pouech <eric.pouech@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
234 lines
6.8 KiB
C
234 lines
6.8 KiB
C
/*
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* Win32 'syslevel' routines
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*
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* Copyright 1998 Ulrich Weigand
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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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#include <stdarg.h>
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#include <sys/types.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winternl.h"
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#include "wine/winbase16.h"
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#include "kernel16_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(syslevel);
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static SYSLEVEL Win16Mutex;
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static CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &Win16Mutex.crst,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": Win16Mutex") }
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};
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static SYSLEVEL Win16Mutex = { { &critsect_debug, -1, 0, 0, 0, 0 }, 1 };
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/************************************************************************
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* GetpWin16Lock (KERNEL32.93)
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*/
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VOID WINAPI GetpWin16Lock(SYSLEVEL **lock)
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{
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*lock = &Win16Mutex;
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}
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/************************************************************************
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* GetpWin16Lock (KERNEL.449)
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*/
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SEGPTR WINAPI GetpWin16Lock16(void)
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{
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static SYSLEVEL *w16Mutex;
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static SEGPTR segpWin16Mutex;
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if (!segpWin16Mutex)
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{
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w16Mutex = &Win16Mutex;
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segpWin16Mutex = MapLS( &w16Mutex );
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}
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return segpWin16Mutex;
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}
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/************************************************************************
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* _CreateSysLevel (KERNEL.438)
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*/
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VOID WINAPI _CreateSysLevel(SYSLEVEL *lock, INT level)
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{
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RtlInitializeCriticalSection( &lock->crst );
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lock->level = level;
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TRACE("(%p, %d): handle is %p\n",
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lock, level, lock->crst.LockSemaphore );
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}
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/************************************************************************
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* _EnterSysLevel (KERNEL32.97)
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* _EnterSysLevel (KERNEL.439)
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*/
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VOID WINAPI _EnterSysLevel(SYSLEVEL *lock)
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{
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struct kernel_thread_data *thread_data = kernel_get_thread_data();
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int i;
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TRACE("(%p, level %d): thread %lx count before %ld\n",
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lock, lock->level, GetCurrentThreadId(), thread_data->sys_count[lock->level] );
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for ( i = 3; i > lock->level; i-- )
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if ( thread_data->sys_count[i] > 0 )
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{
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ERR("(%p, level %d): Holding %p, level %d. Expect deadlock!\n",
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lock, lock->level, thread_data->sys_mutex[i], i );
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}
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RtlEnterCriticalSection( &lock->crst );
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thread_data->sys_count[lock->level]++;
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thread_data->sys_mutex[lock->level] = lock;
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TRACE("(%p, level %d): thread %lx count after %ld\n",
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lock, lock->level, GetCurrentThreadId(), thread_data->sys_count[lock->level] );
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if (lock == &Win16Mutex) CallTo16_TebSelector = get_fs();
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}
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/************************************************************************
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* _LeaveSysLevel (KERNEL32.98)
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* _LeaveSysLevel (KERNEL.440)
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*/
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VOID WINAPI _LeaveSysLevel(SYSLEVEL *lock)
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{
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struct kernel_thread_data *thread_data = kernel_get_thread_data();
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TRACE("(%p, level %d): thread %lx count before %ld\n",
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lock, lock->level, GetCurrentThreadId(), thread_data->sys_count[lock->level] );
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if ( thread_data->sys_count[lock->level] <= 0 || thread_data->sys_mutex[lock->level] != lock )
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{
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ERR("(%p, level %d): Invalid state: count %ld mutex %p.\n",
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lock, lock->level, thread_data->sys_count[lock->level],
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thread_data->sys_mutex[lock->level] );
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}
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else
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{
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if ( --thread_data->sys_count[lock->level] == 0 )
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thread_data->sys_mutex[lock->level] = NULL;
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}
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RtlLeaveCriticalSection( &lock->crst );
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TRACE("(%p, level %d): thread %lx count after %ld\n",
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lock, lock->level, GetCurrentThreadId(), thread_data->sys_count[lock->level] );
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}
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/************************************************************************
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* @ (KERNEL32.86)
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*/
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VOID WINAPI _KERNEL32_86(SYSLEVEL *lock)
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{
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_LeaveSysLevel(lock);
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}
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/************************************************************************
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* _ConfirmSysLevel (KERNEL32.95)
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* _ConfirmSysLevel (KERNEL.436)
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*/
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DWORD WINAPI _ConfirmSysLevel(SYSLEVEL *lock)
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{
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if ( lock && lock->crst.OwningThread == ULongToHandle(GetCurrentThreadId()) )
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return lock->crst.RecursionCount;
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else
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return 0L;
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}
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/************************************************************************
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* _CheckNotSysLevel (KERNEL32.94)
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* _CheckNotSysLevel (KERNEL.437)
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*/
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VOID WINAPI _CheckNotSysLevel(SYSLEVEL *lock)
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{
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if (lock && lock->crst.OwningThread == ULongToHandle(GetCurrentThreadId()) &&
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lock->crst.RecursionCount)
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{
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ERR( "Holding lock %p level %d\n", lock, lock->level );
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DbgBreakPoint();
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}
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}
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/************************************************************************
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* _EnterWin16Lock [KERNEL.480]
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*/
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VOID WINAPI _EnterWin16Lock(void)
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{
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_EnterSysLevel(&Win16Mutex);
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}
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/************************************************************************
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* _LeaveWin16Lock [KERNEL.481]
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*/
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VOID WINAPI _LeaveWin16Lock(void)
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{
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_LeaveSysLevel(&Win16Mutex);
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}
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/************************************************************************
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* _ConfirmWin16Lock (KERNEL32.96)
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*/
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DWORD WINAPI _ConfirmWin16Lock(void)
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{
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return _ConfirmSysLevel(&Win16Mutex);
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}
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/************************************************************************
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* ReleaseThunkLock (KERNEL32.48)
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*/
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VOID WINAPI ReleaseThunkLock(DWORD *mutex_count)
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{
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DWORD count = _ConfirmSysLevel(&Win16Mutex);
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*mutex_count = count;
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while (count-- > 0)
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_LeaveSysLevel(&Win16Mutex);
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}
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/************************************************************************
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* RestoreThunkLock (KERNEL32.49)
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*/
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VOID WINAPI RestoreThunkLock(DWORD mutex_count)
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{
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while (mutex_count-- > 0)
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_EnterSysLevel(&Win16Mutex);
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}
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/************************************************************************
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* SYSLEVEL_CheckNotLevel
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*/
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VOID SYSLEVEL_CheckNotLevel( INT level )
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{
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INT i;
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for ( i = 3; i >= level; i-- )
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if ( kernel_get_thread_data()->sys_count[i] > 0 )
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{
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ERR("(%d): Holding lock of level %d!\n",
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level, i );
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DbgBreakPoint();
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break;
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}
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}
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