Storage Management APIs

ILE CEE APIs are provided for all heap operations. Applications can be written using either the storage management APIs, language-intrinsic functions, or both.

The storage management APIs fall into the following categories:

• Basic heap operations

  Free Storage (CEEFRST) API frees one previously allocated heap storage.

  Get Heap Storage (CEEGTST) API allocates storage within a heap.

  Reallocate Storage (CEECZST) API changes the size of previously allocated storage.

• Extended heap operations

  Create Heap (CEECRHP) API creates a new heap.

  Discard Heap (CEEDSHP) API discards an existing heap.

  Mark Heap (CEEMKHP) API returns a token that can be used to identify heap storage to be freed by the CEERLHP API.

  Release Heap (CEERLHP) API frees all storage allocated in the heap since the mark was specified.

• Heap allocation strategies

  Define Heap Allocation Strategy (CEE4DAS) API defines an allocation strategy that determines the attributes for a heap created with the CEECRHP API.