forked from KolibriOS/kolibrios
330 lines
7.7 KiB
C++
330 lines
7.7 KiB
C++
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// memman.cpp : Defines the entry point for the console application.
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//
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#include "kosSyst.h"
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#include "mcsmemm.h"
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void * __cdecl operator new ( size_t count, size_t element_size )
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{
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return allocmem( (Dword)(count * element_size) );
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}
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void * __cdecl operator new [] ( size_t amount )
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{
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return allocmem( (Dword)amount );
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}
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void * __cdecl operator new ( size_t amount )
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{
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return allocmem( (Dword)amount );
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}
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void __cdecl operator delete ( void *pointer )
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{
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if ( pointer != NULL ) freemem( pointer );
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}
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void __cdecl operator delete [] ( void *pointer )
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{
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if ( pointer != NULL ) freemem( pointer );
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}
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//
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Dword mmMutex = FALSE;
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MemBlock *rootfree = NULL;
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MemBlock *rootuser = NULL;
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bool mmInitialized = false;
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Byte *mmHeapTop = NULL;
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//
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Byte * AllocMemFromSystem( Dword reqSize )
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{
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Byte *result;
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sProcessInfo pInfo;
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//
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if ( mmInitialized )
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{
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result = mmHeapTop;
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}
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else
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{
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//
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kos_ProcessInfo( &pInfo );
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//
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result = (Byte *)(pInfo.processInfo.used_memory + 1);
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//
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mmInitialized = true;
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}
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//
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if ( ! kos_ApplicationMemoryResize( ((Dword)result) + reqSize ) )
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{
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result = NULL;
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}
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//
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mmHeapTop = result + reqSize;
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//
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return result;
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}
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//
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Byte *allocmem( Dword reqsize )
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{
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MemBlock *BlockForCheck;
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MemBlock *LastKnownGood;
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Dword tail;
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Byte *address;
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if( ( tail = reqsize % SIZE_ALIGN ) != 0 )
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{
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reqsize += SIZE_ALIGN - tail;
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}
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LastKnownGood = NULL;
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// <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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while ( rtlInterlockedExchange( &mmMutex, TRUE ) )
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{
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//
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kos_Pause( 1 );
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}
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//<2F><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
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if( rootfree != NULL )
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{
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for ( BlockForCheck = rootfree; ; BlockForCheck = BlockForCheck->Next )
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{
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if ( BlockForCheck->Size >= reqsize )
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{
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//<2F><><EFBFBD><EFBFBD><EFBFBD>
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if ( LastKnownGood != NULL )
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{
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if ( LastKnownGood->Size >= BlockForCheck->Size )
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LastKnownGood = BlockForCheck;
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}
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else
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LastKnownGood = BlockForCheck;
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if ( LastKnownGood->Size == reqsize )
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break;
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}
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if ( BlockForCheck->Next == NULL )
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break;
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}
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}
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if ( LastKnownGood != NULL )
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{
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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tail = LastKnownGood->Size - reqsize;
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if ( tail >= ( sizeof(MemBlock) + SIZE_ALIGN ) )
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{
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//<2F><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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BlockForCheck = (MemBlock *)( ( (Byte *)LastKnownGood ) + tail );
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BlockForCheck->Size = reqsize;
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if( rootuser != NULL )
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{
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BlockForCheck->Next = rootuser;
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rootuser->Previous = BlockForCheck;
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BlockForCheck->Previous = NULL;
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rootuser = BlockForCheck;
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}
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else
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{
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rootuser = BlockForCheck;
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BlockForCheck->Next = NULL;
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BlockForCheck->Previous = NULL;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
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LastKnownGood->Size = tail - sizeof(MemBlock);
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address = ( (Byte *)BlockForCheck ) + sizeof(MemBlock);
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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rtlInterlockedExchange( &mmMutex, FALSE );
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return address;
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}
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else
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{
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if ( LastKnownGood->Previous != NULL )
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{
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LastKnownGood->Previous->Next = LastKnownGood->Next;
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}
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else
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{
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//<2F><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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rootfree = LastKnownGood->Next;
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}
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if( LastKnownGood->Next != NULL )
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{
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LastKnownGood->Next->Previous = LastKnownGood->Previous;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if( rootuser != NULL )
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{
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LastKnownGood->Next = rootuser;
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rootuser->Previous = LastKnownGood;
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LastKnownGood->Previous = NULL;
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rootuser = LastKnownGood;
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}
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else
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{
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rootuser = LastKnownGood;
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LastKnownGood->Next = NULL;
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LastKnownGood->Previous = NULL;
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}
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//
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address = ( (Byte *)LastKnownGood ) + sizeof(MemBlock);
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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rtlInterlockedExchange( &mmMutex, FALSE );
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return address;
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}
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}
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else
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{
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//<2F><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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LastKnownGood = (MemBlock *)AllocMemFromSystem( reqsize + sizeof(MemBlock) );
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//
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if( LastKnownGood != NULL )
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{
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LastKnownGood->Size = reqsize;
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if( rootuser != NULL )
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{
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LastKnownGood->Next = rootuser;
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rootuser->Previous = LastKnownGood;
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LastKnownGood->Previous = NULL;
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rootuser = LastKnownGood;
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}
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else
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{
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rootuser = LastKnownGood;
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LastKnownGood->Next = NULL;
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LastKnownGood->Previous = NULL;
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}
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address = ( (Byte *)LastKnownGood ) + sizeof(MemBlock);
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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rtlInterlockedExchange( &mmMutex, FALSE );
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return address;
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}
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}
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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rtlInterlockedExchange( &mmMutex, FALSE );
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//
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rtlDebugOutString( "allocmem failed." );
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kos_ExitApp();
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//
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return NULL;
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}
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//
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Dword freemem( void *vaddress )
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{
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Dword result;
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Byte *checknext, *address = (Byte *)vaddress;
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// <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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while ( rtlInterlockedExchange( &mmMutex, TRUE ) )
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{
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//
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kos_Pause( 1 );
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}
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MemBlock *released = (MemBlock *)( address - sizeof(MemBlock) );
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result = released->Size;
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if ( released->Previous != NULL )
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{
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released->Previous->Next = released->Next;
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}
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else
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{
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rootuser = released->Next;
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}
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if ( released->Next != NULL )
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{
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released->Next->Previous = released->Previous;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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released->Next = rootfree;
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released->Previous = NULL;
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rootfree = released;
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if ( released->Next != NULL )
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{
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released->Next->Previous = released;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
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checknext = (Byte *)(rootfree) + ( rootfree->Size + sizeof(MemBlock) );
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//
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for ( released = rootfree->Next; released != NULL; released = released->Next )
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{
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if ( checknext == (Byte *)released )
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{
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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released->Previous->Next = released->Next;
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if( released->Next != NULL )
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{
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released->Next->Previous = released->Previous;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
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rootfree->Size += released->Size + sizeof(MemBlock);
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break;
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}
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}
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//<2F><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
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checknext = (Byte *)(rootfree);
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//
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if ( released == NULL )
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{
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for ( released = rootfree->Next; released != NULL; released = released->Next )
|
|||
|
|
{
|
|||
|
|
if ( checknext == (Byte *)released + ( released->Size + sizeof(MemBlock) ) )
|
|||
|
|
{
|
|||
|
|
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
released->Size += rootfree->Size + sizeof(MemBlock);
|
|||
|
|
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
released->Previous->Next = released->Next;
|
|||
|
|
if ( released->Next != NULL )
|
|||
|
|
{
|
|||
|
|
released->Next->Previous = released->Previous;
|
|||
|
|
}
|
|||
|
|
//<2F> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
if ( rootfree->Next != NULL )
|
|||
|
|
{
|
|||
|
|
rootfree->Next->Previous = released;
|
|||
|
|
}
|
|||
|
|
released->Next = rootfree->Next;
|
|||
|
|
released->Previous = NULL;
|
|||
|
|
rootfree = released;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
|||
|
|
rtlInterlockedExchange( &mmMutex, FALSE );
|
|||
|
|
|
|||
|
|
return result;
|
|||
|
|
}
|
|||
|
|
|