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kolibrios/programs/media/imgview/mcsmemm.cpp

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imgview 0.08 git-svn-id: svn://kolibrios.org@958 a494cfbc-eb01-0410-851d-a64ba20cac60
2008-12-14 02:11:59 +03:00
// memman.cpp : Defines the entry point for the console application.
//
#include "kosSyst.h"
#include "mcsmemm.h"
void * __cdecl operator new ( size_t count, size_t element_size )
{
return allocmem( (Dword)(count * element_size) );
}
void * __cdecl operator new [] ( size_t amount )
{
return allocmem( (Dword)amount );
}
void * __cdecl operator new ( size_t amount )
{
return allocmem( (Dword)amount );
}
void __cdecl operator delete ( void *pointer )
{
if ( pointer != NULL ) freemem( pointer );
}
void __cdecl operator delete [] ( void *pointer )
{
if ( pointer != NULL ) freemem( pointer );
}
//
Dword mmMutex = FALSE;
MemBlock *rootfree = NULL;
MemBlock *rootuser = NULL;
bool mmInitialized = false;
Byte *mmHeapTop = NULL;
//
Byte * AllocMemFromSystem( Dword reqSize )
{
Byte *result;
sProcessInfo pInfo;
//
if ( mmInitialized )
{
result = mmHeapTop;
}
else
{
//
kos_ProcessInfo( &pInfo );
//
result = (Byte *)(pInfo.processInfo.used_memory + 1);
//
mmInitialized = true;
}
//
if ( ! kos_ApplicationMemoryResize( ((Dword)result) + reqSize ) )
{
result = NULL;
}
//
mmHeapTop = result + reqSize;
//
return result;
}
//
Byte *allocmem( Dword reqsize )
{
MemBlock *BlockForCheck;
MemBlock *LastKnownGood;
Dword tail;
Byte *address;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if( ( tail = reqsize % SIZE_ALIGN ) != 0 )
{
reqsize += SIZE_ALIGN - tail;
}
LastKnownGood = NULL;
// <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
while ( rtlInterlockedExchange( &mmMutex, TRUE ) )
{
//
kos_Pause( 1 );
}
//<2F><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
if( rootfree != NULL )
{
for ( BlockForCheck = rootfree; ; BlockForCheck = BlockForCheck->Next )
{
if ( BlockForCheck->Size >= reqsize )
{
//<2F><><EFBFBD><EFBFBD><EFBFBD>
if ( LastKnownGood != NULL )
{
if ( LastKnownGood->Size >= BlockForCheck->Size )
LastKnownGood = BlockForCheck;
}
else
LastKnownGood = BlockForCheck;
if ( LastKnownGood->Size == reqsize )
break;
}
if ( BlockForCheck->Next == NULL )
break;
}
}
if ( LastKnownGood != NULL )
{
//<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>
tail = LastKnownGood->Size - reqsize;
if ( tail >= ( sizeof(MemBlock) + SIZE_ALIGN ) )
{
//<2F><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
BlockForCheck = (MemBlock *)( ( (Byte *)LastKnownGood ) + tail );
BlockForCheck->Size = reqsize;
//<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>
if( rootuser != NULL )
{
BlockForCheck->Next = rootuser;
rootuser->Previous = BlockForCheck;
BlockForCheck->Previous = NULL;
rootuser = BlockForCheck;
}
else
{
rootuser = BlockForCheck;
BlockForCheck->Next = NULL;
BlockForCheck->Previous = NULL;
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
LastKnownGood->Size = tail - sizeof(MemBlock);
address = ( (Byte *)BlockForCheck ) + sizeof(MemBlock);
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
rtlInterlockedExchange( &mmMutex, FALSE );
return address;
}
else
{
//<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>
//<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>
if ( LastKnownGood->Previous != NULL )
{
LastKnownGood->Previous->Next = LastKnownGood->Next;
}
else
{
//<2F><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
rootfree = LastKnownGood->Next;
}
if( LastKnownGood->Next != NULL )
{
LastKnownGood->Next->Previous = LastKnownGood->Previous;
}
//<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>
if( rootuser != NULL )
{
LastKnownGood->Next = rootuser;
rootuser->Previous = LastKnownGood;
LastKnownGood->Previous = NULL;
rootuser = LastKnownGood;
}
else
{
rootuser = LastKnownGood;
LastKnownGood->Next = NULL;
LastKnownGood->Previous = NULL;
}
//
address = ( (Byte *)LastKnownGood ) + sizeof(MemBlock);
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
rtlInterlockedExchange( &mmMutex, FALSE );
return address;
}
}
else
{
//<2F><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
LastKnownGood = (MemBlock *)AllocMemFromSystem( reqsize + sizeof(MemBlock) );
//
if( LastKnownGood != NULL )
{
LastKnownGood->Size = reqsize;
//<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>
if( rootuser != NULL )
{
LastKnownGood->Next = rootuser;
rootuser->Previous = LastKnownGood;
LastKnownGood->Previous = NULL;
rootuser = LastKnownGood;
}
else
{
rootuser = LastKnownGood;
LastKnownGood->Next = NULL;
LastKnownGood->Previous = NULL;
}
address = ( (Byte *)LastKnownGood ) + sizeof(MemBlock);
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
rtlInterlockedExchange( &mmMutex, FALSE );
return address;
}
}
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
rtlInterlockedExchange( &mmMutex, FALSE );
//
rtlDebugOutString( "allocmem failed." );
kos_ExitApp();
//
return NULL;
}
//
Dword freemem( void *vaddress )
{
Dword result;
Byte *checknext, *address = (Byte *)vaddress;
// <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
while ( rtlInterlockedExchange( &mmMutex, TRUE ) )
{
//
kos_Pause( 1 );
}
MemBlock *released = (MemBlock *)( address - sizeof(MemBlock) );
result = released->Size;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if ( released->Previous != NULL )
{
released->Previous->Next = released->Next;
}
else
{
rootuser = released->Next;
}
if ( released->Next != NULL )
{
released->Next->Previous = released->Previous;
}
//<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>
released->Next = rootfree;
released->Previous = NULL;
rootfree = released;
if ( released->Next != NULL )
{
released->Next->Previous = released;
}
//<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>
checknext = (Byte *)(rootfree) + ( rootfree->Size + sizeof(MemBlock) );
//
for ( released = rootfree->Next; released != NULL; released = released->Next )
{
if ( checknext == (Byte *)released )
{
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//<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>
released->Previous->Next = released->Next;
if( released->Next != NULL )
{
released->Next->Previous = released->Previous;
}
//<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>
rootfree->Size += released->Size + sizeof(MemBlock);
break;
}
}
//<2F><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
checknext = (Byte *)(rootfree);
//
if ( released == NULL )
{
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;
}
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