SetMemoryBudget
Performance, document management
Description
Controls decoded-stream storage and the entry-count and decoded-byte budgets for compressed object-stream caching
Syntax
Delphi
Function TPDFlib.SetMemoryBudget(MaxDecodedStreamSize: Int64; ObjectStreamCacheSize: Integer): Integer; Overload;Function TPDFlib.SetMemoryBudget(MaxDecodedStreamSize: Int64; ObjectStreamCacheSize: Integer; ObjectStreamCacheMaxBytes: Int64): Integer; Overload;DLL
int DLSetMemoryBudget(int InstanceID, int64_t MaxDecodedStreamSize,
int ObjectStreamCacheSize);Parameters
| MaxDecodedStreamSize | The maximum decoded stream bytes retained in memory, or 0 for no limit |
|---|---|
| ObjectStreamCacheSize | The maximum compressed object streams cached in memory, or 0 for the default of 50 |
| ObjectStreamCacheMaxBytes | The maximum decoded object-stream payload and offset-table bytes cached per document, or 0 for no byte limit |
Return values
| 1 | The limits were accepted and applied to existing and future documents |
|---|---|
| 0 | A value was negative |
Remarks
Call either overload before loading to set instance defaults for every later document
The two-parameter overload preserves the configured object-stream byte budget
Cached object streams use least-recently-used eviction, and a decoded object stream larger than the byte budget is read without entering the cache