- All Known Implementing Classes:
- DirectAllocator, PoolingAllocator
- public interface Allocator
Abstraction of memory manager. Useful for I/O processing when direct buffer
management is required, e.g. if one wants to control maximum memory usage by
I/O buffers. Example application is in util.io.BufferedPipe. Concrete
implementations of this interface may implement various allocation policies.
- Version:
- 1.0
|
Nested Class Summary |
static class |
Allocator.Buffer
Represents the data buffer returned to the application as a result of
allocate() request. |
allocate
public Allocator.Buffer allocate(int size,
boolean clear,
long timeout)
throws java.lang.InterruptedException
- Allocate a buffer with specified size. The operation can
block if memory limits are exceeded. The timeout value greater
than 0 indicates the timeout, the value of 0 will cause immediate
return of null if the buffer was not available, and value less
than zero will cause to wait for buffer inidefinitely. The
clear parameter indicates that the buffer should be zeroed out.
Since buffers may be recycled, the buffer returned may contain random
garbage if this value is false. If it is set to true, the [0..size]
region of the array within the buffer is filled with zeros.
This method may return a buffer containing an array larger than
requested.
JAVADOC | 
SOURCE | 
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