CheckedAllocator

Wrapper allocator which calls a function when memory allocation fails. Because downstream code doesn't check for nulls, this allows better error messages should btdu run out of memory. (Mainly this is useful for testing and profiling.)

struct CheckedAllocator (

ParentAllocator

alias onFail = onOutOfMemoryError

) {

import std.traits : hasMember;;

import std.typecons : Ternary;;

static if(stateSize!ParentAllocator)

ParentAllocator parent;

alias parent = ParentAllocator.instance;

static

static if(!(stateSize!ParentAllocator))

CheckedAllocator instance;

void[] allocate(size_t n);

bool reallocate(void[] b, size_t s);

enum alignment;

size_t goodAllocSize(size_t n);

static if(hasMember!(ParentAllocator, "expand"))

bool expand(void[] b, size_t delta);

static if(hasMember!(ParentAllocator, "owns"))

Ternary owns(void[] b);

static if(hasMember!(ParentAllocator, "deallocate"))

bool deallocate(void[] b);

static if(hasMember!(ParentAllocator, "deallocateAll"))

bool deallocateAll();

static if(hasMember!(ParentAllocator, "empty"))

Ternary empty();

}

Members

Aliases

parent alias parent = ParentAllocator.instance: Undocumented in source.

Functions

allocate void[] allocate(size_t n): Undocumented in source. Be warned that the author may not have intended to support it.
deallocate bool deallocate(void[] b): Undocumented in source. Be warned that the author may not have intended to support it.
deallocateAll bool deallocateAll(): Undocumented in source. Be warned that the author may not have intended to support it.
empty Ternary empty(): Undocumented in source. Be warned that the author may not have intended to support it.
expand bool expand(void[] b, size_t delta): Undocumented in source. Be warned that the author may not have intended to support it.
goodAllocSize size_t goodAllocSize(size_t n): Undocumented in source. Be warned that the author may not have intended to support it.
owns Ternary owns(void[] b): Undocumented in source. Be warned that the author may not have intended to support it.
reallocate bool reallocate(void[] b, size_t s): Undocumented in source. Be warned that the author may not have intended to support it.

Manifest constants

alignment enum alignment;: Undocumented in source.

Static variables

instance CheckedAllocator instance;: Undocumented in source.

Variables

parent ParentAllocator parent;: Undocumented in source.