Package com.orientechnologies.common.directmemory

Class ODirectMemoryAllocator

java.lang.Object
com.orientechnologies.common.directmemory.ODirectMemoryAllocator
All Implemented Interfaces:
ODirectMemoryAllocatorMXBean
public class ODirectMemoryAllocator extends Object implements ODirectMemoryAllocatorMXBean
Manages all allocations/deallocations from/to direct memory. Also tracks the presence of memory leaks.
See Also:

  • Constructor Details

    • ODirectMemoryAllocator

      public ODirectMemoryAllocator()

  • Method Details

    • instance

      public static ODirectMemoryAllocator instance()
      Returns:
      singleton instance.

    • allocate

      public OPointer allocate(int size, boolean clear, MemTrace intention)
      Allocates chunk of direct memory of given size.
      Parameters:
      size - Amount of memory to allocate
      clear - clears memory if needed
      intention - Why this memory is allocated. This parameter is used for memory profiling.
      Returns:
      Pointer to allocated memory
      Throws:
      ODirectMemoryAllocationFailedException - if it is impossible to allocate amount of direct memory of given size

    • deallocate

      public void deallocate(OPointer pointer)
      Returns allocated direct memory back to OS

    • getMemoryConsumption

      public long getMemoryConsumption()
      Specified by:
      getMemoryConsumption in interface ODirectMemoryAllocatorMXBean
      Returns:
      Amount of direct memory allocated using this allocator

    • checkMemoryLeaks

      public void checkMemoryLeaks()
      Verifies that all pointers which were allocated by allocator are freed.

    • checkTrackedPointerLeaks

      public void checkTrackedPointerLeaks()
      Checks reference queue to find direct memory leaks

    • id

      public static int id(Object object)