SWI-Prolog -- trim

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Predicate trim_heap/0

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Documentation
- Reference manual
  - Built-in Predicates
    - Memory Management
      - Heap memory (malloc)
        
        trim_heap/0
        
        TCMalloc control predicates
- Packages

Availability:built-in

his predicate attempts to return heap memory to the operating system. There is no portable way of doing so. If the system detects tcmalloc it calls MallocExtension_ReleaseFreeMemory(). If the system detects ptmalloc as provided by the GNU runtime library it calls malloc_trim(). In other cases this predicate simply succeeds. See also trim_stacks/0