java.lang.Object | |
↳ | com.facebook.imagepipeline.memory.PoolParams |
Config parameters for pools (BasePool
. Supplied via a provider.
maxSizeSoftCap
This represents a soft cap on the size of the pool. When the pool size hits this limit, the pool
tries to trim its free space until either the pool size is below the soft cap, or the
free space is zero.
Note that allocations will not fail because we have exceeded the soft cap
maxSizeHardCap
The hard cap represents a hard cap on the size of the pool. When the pool size exceeds this cap,
allocations will start failing with a BasePool.PoolSizeViolationException
bucketSizes
The pool can be configured with a set of 'sizes' - a bucket is created for each such size.
Additionally, each bucket can have a a max-length specified, which is the sum of the used and
free items in that bucket. As with the MaxSize parameter above, the maxLength here is a soft
cap, in that it will not cause an exception on get; it simply controls the release path
When the bucket sizes are specified upfront, the pool may still get requests for non standard
sizes. Such cases are treated as plain alloc/free calls i.e. the values are not maintained in
the pool.
If this parameter is null, then the pool will create buckets on demand
minBucketSize
This represents the minimum size of the buckets in the pool. This assures that all buckets can
hold any element larger or equal to this size.
maxBucketSize
This represents the maximum size of the buckets in the pool. This restricts all buckets to only
accept elements smaller or equal to this size. If this size is exceeded, an exception will be
thrown.
Constants | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
int | IGNORE_THREADS | If maxNumThreads is set to this level, the pool doesn't actually care what it is |
Fields | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
public String | bitmapPoolType | ||||||||||
public final SparseIntArray | bucketSizes | ||||||||||
public boolean | fixBucketsReinitialization | ||||||||||
public final int | maxBucketSize | ||||||||||
public final int | maxNumThreads | The maximum number of threads that may be accessing this pool. | |||||||||
public final int | maxSizeHardCap | ||||||||||
public final int | maxSizeSoftCap | ||||||||||
public final int | minBucketSize |
Public Constructors | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
PoolParams(int maxSize, SparseIntArray bucketSizes)
Set up pool params
| |||||||||||
PoolParams(int maxSizeSoftCap, int maxSizeHardCap, SparseIntArray bucketSizes)
Set up pool params
| |||||||||||
PoolParams(int maxSizeSoftCap, int maxSizeHardCap, SparseIntArray bucketSizes, int minBucketSize, int maxBucketSize, int maxNumThreads)
Set up pool params
|
[Expand]
Inherited Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
If maxNumThreads is set to this level, the pool doesn't actually care what it is
The maximum number of threads that may be accessing this pool.
Pool implementations may or may not need this to be set.
Set up pool params
maxSize | soft-cap and hard-cap on size of the pool |
---|---|
bucketSizes | (optional) bucket sizes and lengths for the pool |
Set up pool params
maxSizeSoftCap | soft cap on max size of the pool |
---|---|
maxSizeHardCap | hard cap on max size of the pool |
bucketSizes | (optional) bucket sizes and lengths for the pool |
Set up pool params
maxSizeSoftCap | soft cap on max size of the pool |
---|---|
maxSizeHardCap | hard cap on max size of the pool |
bucketSizes | (optional) bucket sizes and lengths for the pool |
minBucketSize | min bucket size for the pool |
maxBucketSize | max bucket size for the pool |
maxNumThreads | the maximum number of threads in th epool, or -1 if the pool doesn't care |