com.google.monitoring.runtime.instrumentation
Interface Sampler
public interface Sampler
This interface describes a function that is used to sample an allocation.
- Author:
- jeremymanson@google.com (Jeremy Manson)
Method Summary |
void |
sampleAllocation(int count,
String desc,
Object newObj,
long size)
Determines whether the object currently being allocated, with the given
size, should be traced. |
sampleAllocation
void sampleAllocation(int count,
String desc,
Object newObj,
long size)
- Determines whether the object currently being allocated, with the given
size, should be traced.
CAUTION: DO NOT DO ALLOCATION IN THIS METHOD WITHOUT ENSURING THAT
THE SAMPLER WILL NOT BE INVOKED ON THE RESULTING ALLOCATION.
Otherwise, you will get an infinite regress of calls to the sampler.
- Parameters:
count
- the int
count of how many instances are being
allocated. -1 means a simple new to distinguish from a 1-element array. 0
shows up as a value here sometimes; one reason is T[] toArray()-type
methods that require an array type argument (see ArrayList.toArray() for
example).desc
- the String
descriptor of the class/primitive type
being allocated.newObj
- the new Object
whose allocation we're
recording.size
- the size of the object being allocated.
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