0,0 → 1,90 |
#ifndef __MENUET_HEAP_H_INCLUDED_ |
#define __MENUET_HEAP_H_INCLUDED_ |
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#include <menuet.h> |
#include <memheap.h> |
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// Menuet memory heap interface. |
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namespace Menuet // All menuet functions, types and data are nested in the (Menuet) namespace. |
{ |
void *Alloc(unsigned int size); |
void *ReAlloc(void *mem, unsigned int size); |
void Free(void *mem); |
} |
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#ifdef __MENUET__ |
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namespace Menuet |
{ |
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// Global variables |
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MemoryHeap::TFreeSpace _MenuetFreeSpace; |
MemoryHeap::TMemBlock _MenuetMemBlock; |
TMutex _MemHeapMutex = MENUET_MUTEX_INIT; |
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// Functions |
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void *_HeapInit(void *begin, void *use_end, void *end) |
{ |
MemoryHeap::InitFreeSpace(_MenuetFreeSpace); |
_MenuetMemBlock = MemoryHeap::CreateBlock(begin, end, _MenuetFreeSpace); |
unsigned int use_beg = (unsigned int)MemoryHeap::BlockBegin(_MenuetMemBlock) + |
MemoryHeap::BlockAddSize - MemoryHeap::BlockEndSize; |
unsigned int use_size = (unsigned int)use_end; |
if (use_size <= use_beg) return 0; |
else use_size -= use_beg; |
return MemoryHeap::Alloc(_MenuetFreeSpace, use_size); |
} |
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bool _SetUseMemory(unsigned int use_mem); |
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int _RecalculateUseMemory(unsigned int use_mem); |
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void *Alloc(unsigned int size) |
{ |
if (!size) return 0; |
Lock(&_MemHeapMutex); |
void *res = MemoryHeap::Alloc(_MenuetFreeSpace, size); |
if (!res) |
{ |
unsigned use_mem = (unsigned int)MemoryHeap::BlockEndFor(_MenuetMemBlock, size); |
if (_SetUseMemory(_RecalculateUseMemory(use_mem))) |
{ |
res = MemoryHeap::Alloc(_MenuetFreeSpace, size); |
} |
} |
UnLock(&_MemHeapMutex); |
return res; |
} |
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void *ReAlloc(void *mem, unsigned int size) |
{ |
Lock(&_MemHeapMutex); |
void *res = MemoryHeap::ReAlloc(_MenuetFreeSpace, mem, size); |
if (!res && size) |
{ |
unsigned use_mem = (unsigned int)MemoryHeap::BlockEndFor(_MenuetMemBlock, size); |
if (_SetUseMemory(_RecalculateUseMemory(use_mem))) |
{ |
res = MemoryHeap::ReAlloc(_MenuetFreeSpace, mem, size); |
} |
} |
UnLock(&_MemHeapMutex); |
return res; |
} |
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void Free(void *mem) |
{ |
Lock(&_MemHeapMutex); |
MemoryHeap::Free(_MenuetFreeSpace, mem); |
UnLock(&_MemHeapMutex); |
} |
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void _FreeAndThreadFinish(void *mem, int *exit_proc_now); |
} |
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#endif // def __MENUET__ |
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#endif // ndef __MENUET_HEAP_H_INCLUDED_ |