mirror of
https://github.com/UzixLS/KernelEx.git
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96 lines
2.2 KiB
C++
Executable File
96 lines
2.2 KiB
C++
Executable File
/*
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* KernelEx
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* Copyright (C) 2009, Xeno86
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*
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* This file is part of KernelEx source code.
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*
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* KernelEx is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; version 2 of the License.
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*
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* KernelEx 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <windows.h>
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#include <new>
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#include "ProcessStorage.h"
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#include "internals.h"
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#include "debug.h"
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long ProcessStorage::count;
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struct PDB_KEX : PDB98
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{
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void* kex_storage;
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};
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ProcessStorage::ProcessStorage()
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{
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for (int i = 0 ; i < PS_MAX_INDEX ; i++)
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data[i] = NULL;
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}
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ProcessStorage* ProcessStorage::get_instance()
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{
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PDB_KEX* pdb = (PDB_KEX*) *pppdbCur;
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if (!pdb->kex_storage)
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return create_instance();
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return (ProcessStorage*) pdb->kex_storage;
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}
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void* ProcessStorage::get(int index)
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{
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if (index >= 0 && index < PS_MAX_INDEX)
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return data[index];
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else
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return NULL;
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}
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bool ProcessStorage::set(int index, void* value)
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{
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if (index >= 0 && index < PS_MAX_INDEX)
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data[index] = value;
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else
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return false;
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return true;
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}
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int ProcessStorage::allocate()
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{
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if (count >= PS_MAX_INDEX - 1)
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return -1;
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return InterlockedIncrement(&count);
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}
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ProcessStorage* ProcessStorage::create_instance()
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{
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ProcessStorage* ret;
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PDB_KEX* pdb = (PDB_KEX*) *pppdbCur;
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_EnterSysLevel(krnl32lock);
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//double check - we might have been waiting on krnl32lock for create_instance
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if (pdb->kex_storage)
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{
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_LeaveSysLevel(krnl32lock);
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return (ProcessStorage*) pdb->kex_storage;
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}
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pdb->kex_storage = HeapAlloc(_GetProcessHeap(), 0, sizeof(ProcessStorage));
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ret = new (pdb->kex_storage) ProcessStorage();
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_LeaveSysLevel(krnl32lock);
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DBGASSERT(pdb->kex_storage != NULL && ret != NULL);
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return ret;
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}
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