class AbstractAllocator

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acdk::lang::sys::AbstractAllocator Class Reference

#include <Allocator.h>

Inheritance diagram for acdk::lang::sys::AbstractAllocator:

List of all members.

Detailed Description

The AbstractAllocator allocates for Object types a little bit memory, where the beginning of the allocated block a pointer to the Allocator can be found.

The returned Object pointer is at offset ALIGNEDSIZEOF(MemChunkHeader).

All operations are protected by a simple/fast mutex

Public Member Functions

AbstractAllocator (int allocatorFlags, const core_string &name)

virtual ~AbstractAllocator ()

virtual void lock ()

in case of GC or other scanning activities the Allocator should be locked.

virtual void unlock ()

in case of GC or other scanning activities the Allocator should be locked.

virtual void * raw_allocate (size_t size, AllocatedType type)=0

virtual void raw_deallocate (size_t size, void *ptr, AllocatedType type)=0

virtual void * allocate (size_t size, AllocatedType at=RawMem)

Allocates Memory.

virtual void deallocate (void *ptr, AllocatedType at=RawMem)

Frees Memory.

virtual void listObjects (::acdk::lang::ref::NotifyObjectEventListener *listener, int flags)=0

virtual const AllocatorInfo & getAllocatorInfo ()

virtual bool doGc (bool threadStorage=true, bool force=false)

try to garbage collect items

const char * name () const

Public Attributes

AllocatorInfo _allocInfo

Protected Attributes

core_fastmutex _lock

Constructor & Destructor Documentation

acdk::lang::sys::AbstractAllocator::AbstractAllocator ( int allocatorFlags,

const core_string & name

)

virtual acdk::lang::sys::AbstractAllocator::~AbstractAllocator ( ) [virtual]

Member Function Documentation

virtual void* acdk::lang::sys::AbstractAllocator::allocate ( size_t size,

AllocatedType at = RawMem

) [virtual]

Allocates Memory.
It is important, that the Allocator itself will be found in MemChunkHeader directly before this memory location)
Parameters:

size size of Object (not including MemChunkHeader)

Returns:
the raw preinitialized Object not including MemChunkHeader

Implements acdk::lang::sys::Allocator.
Reimplemented in acdk::lang::sys::BitmapPagedAllocator, acdk::lang::sys::BoehmGCAllocator, acdk::lang::sys::PagedAllocator, and acdk::lang::sys::TracedRawAllocator.

virtual void acdk::lang::sys::AbstractAllocator::deallocate ( void * ptr,

AllocatedType at = RawMem

) [virtual]

Frees Memory.

Parameters:

ptr points to user object (not including MemChunkHeader)

Implements acdk::lang::sys::Allocator.
Reimplemented in acdk::lang::sys::BitmapPagedAllocator, acdk::lang::sys::BoehmGCAllocator, acdk::lang::sys::PagedAllocator, and acdk::lang::sys::TracedRawAllocator.

virtual bool acdk::lang::sys::AbstractAllocator::doGc ( bool threadStorage = true,

bool force = false

) [virtual]

try to garbage collect items

Parameters:

threadStorage if true only object allocated in the current thread should be gced

force if true also release internal buffer

Returns:
true if any storage was freed

Implements acdk::lang::sys::Allocator.
Reimplemented in acdk::lang::sys::PagedAllocator.

virtual const AllocatorInfo& acdk::lang::sys::AbstractAllocator::getAllocatorInfo ( ) [inline, virtual]

Returns:
the filled AllocatorInfo

Implements acdk::lang::sys::Allocator.

virtual void acdk::lang::sys::AbstractAllocator::listObjects ( ::acdk::lang::ref::NotifyObjectEventListener * listener,

int flags

) [pure virtual]

Parameters:

flags combination of ListObjectsFlags

Implements acdk::lang::sys::Allocator.
Implemented in acdk::lang::sys::RawAllocator, acdk::lang::sys::BitmapPagedAllocator, acdk::lang::sys::BoehmGCAllocator, acdk::lang::sys::PagedAllocator, and acdk::lang::sys::TracedRawAllocator.

virtual void acdk::lang::sys::AbstractAllocator::lock ( ) [inline, virtual]

in case of GC or other scanning activities the Allocator should be locked.
allocate() and deallocate should simply block
Implements acdk::lang::sys::Allocator.

const char* acdk::lang::sys::AbstractAllocator::name ( ) const [inline]

virtual void* acdk::lang::sys::AbstractAllocator::raw_allocate ( size_t size,

AllocatedType type

) [pure virtual]

Parameters:

size is including MemChunkHeader

Implemented in acdk::lang::sys::RawAllocator, acdk::lang::sys::BitmapPagedAllocator, acdk::lang::sys::BoehmGCAllocator, acdk::lang::sys::PagedAllocator, and acdk::lang::sys::TracedRawAllocator.

virtual void acdk::lang::sys::AbstractAllocator::raw_deallocate ( size_t size,

void * ptr,

AllocatedType type

) [pure virtual]

Parameters:

size is including MemChunkHeader

ptr is including MemChunkHeader

Implemented in acdk::lang::sys::RawAllocator, acdk::lang::sys::BitmapPagedAllocator, acdk::lang::sys::BoehmGCAllocator, acdk::lang::sys::PagedAllocator, and acdk::lang::sys::TracedRawAllocator.

virtual void acdk::lang::sys::AbstractAllocator::unlock ( ) [inline, virtual]

in case of GC or other scanning activities the Allocator should be locked.
allocate() and deallocate should simply block
Implements acdk::lang::sys::Allocator.

Member Data Documentation

AllocatorInfo acdk::lang::sys::AbstractAllocator::_allocInfo

core_fastmutex acdk::lang::sys::AbstractAllocator::_lock [protected]