heap_bytes

fn heap_bytes() -> int

use gc::{heap_bytes};

Returns the size of the managed heap in bytes.

This counts only memory the VM’s garbage collector manages: not native libraries, stacks or other process memory.

Returns#

int

Examples#

use gc::{heap_bytes};
use tests::assert;
let v = Vec::from([1, 2, 3]);
assert!(heap_bytes() > 0 && v.len() == 3);

See also#

• root: Pins value so the garbage collector keeps it alive while the returned Root is reachable.
• get: Returns the pinned value, leaving the pin in place.
• unroot: Releases the pin and returns the value it held.
• weak: Makes a handle to value that does not keep it alive.
• upgrade: Returns the value while it is still alive, None once it was collected.
• collect: Runs a full garbage collection now and returns the number of bytes freed.