StrikeCache

Class Overview

A FontStrike is the keeper of scaled glyph image data which is expensive to compute so needs to be cached. So long as that data may be being used it cannot be invalidated. Yet we also need to limit the amount of native memory and number of strike objects in use. For scaleability and ease of use, a key goal is multi-threaded read access to a strike, so that it may be shared by multiple client objects, potentially executing on different threads, with no special reference counting or "check-out/check-in" requirements which would pass on the burden of keeping track of strike references to the SG2D and other clients. A cache of strikes is maintained via Reference objects. This helps in two ways : 1. The VM will free references when memory is low or they have not been used in a long time. 2. Reference queues provide a way to get notification of this so we can free native memory resources.

Summary

[Expand] Inherited Methods

From class java.lang.Object Object clone() Creates and returns a copy of this object. boolean equals(Object obj) Indicates whether some other object is "equal to" this one. void finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. final Class<?> getClass() Returns the runtime class of this Object. int hashCode() Returns a hash code value for the object. final void notify() Wakes up a single thread that is waiting on this object's monitor. final void notifyAll() Wakes up all threads that are waiting on this object's monitor. String toString() Returns a string representation of the object. final void wait() Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object. final void wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed. final void wait(long timeout) Causes the current thread to wait until either another thread invokes the notify() method or the notifyAll() method for this object, or a specified amount of time has elapsed.