91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "watchmaker/3d/mem_management.h"
|
|
#include "watchmaker/types.h"
|
|
#include "watchmaker/ll/ll_system.h"
|
|
|
|
namespace Watchmaker {
|
|
|
|
static int8 *MemoryPool = nullptr;
|
|
static uint32 MemoryPoolPointer = 0;
|
|
static uint32 MaxAllocatedMem = 0;
|
|
|
|
// Memory Management
|
|
// Only linear (non dynamic) stack allocations
|
|
|
|
|
|
/* -----------------10/06/99 16.06-------------------
|
|
* t3dAllocMemoryPool
|
|
* --------------------------------------------------*/
|
|
uint8 t3dAllocMemoryPool(uint32 pool) {
|
|
uint8 allocated = 0;
|
|
|
|
MemoryPoolPointer = 0;
|
|
while ((allocated == 0) && (pool > 0)) {
|
|
if (!(MemoryPool = t3dCalloc<int8>(pool)))
|
|
pool -= 10000;
|
|
else
|
|
allocated = 1;
|
|
}
|
|
|
|
if (allocated == 0)
|
|
return 0;
|
|
else {
|
|
MaxAllocatedMem = pool;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* -----------------10/06/99 16.07-------------------
|
|
* t3dDeallocMemoryPool
|
|
* --------------------------------------------------*/
|
|
void t3dDeallocMemoryPool() {
|
|
if (MemoryPool == nullptr) return;
|
|
t3dFree(MemoryPool);
|
|
MemoryPool = nullptr;
|
|
MaxAllocatedMem = 0;
|
|
}
|
|
|
|
/* -----------------10/06/99 16.07-------------------
|
|
* t3dAlloc
|
|
* --------------------------------------------------*/
|
|
void *t3dAlloc(uint32 size) {
|
|
if (MemoryPool == nullptr) return nullptr;
|
|
MemoryPoolPointer += size;
|
|
if (MemoryPoolPointer > MaxAllocatedMem) {
|
|
return nullptr;
|
|
}
|
|
|
|
return &MemoryPool[MemoryPoolPointer - size];
|
|
}
|
|
|
|
/* -----------------10/06/99 16.07-------------------
|
|
* t3dDealloc
|
|
* --------------------------------------------------*/
|
|
void *t3dDealloc(uint32 size) {
|
|
if (MemoryPool == nullptr) return nullptr;
|
|
MemoryPoolPointer -= size;
|
|
return &MemoryPool[MemoryPoolPointer];
|
|
}
|
|
|
|
} // End of namespace Watchmaker
|