# Function std::alloc::set_oom_hook[−][src]

    pub fn set_oom_hook(hook: fn(_: Layout))

🔬 This is a nightly-only experimental API. (`oom_hook` #51245)

Registers a custom OOM hook, replacing any that was previously registered.

The OOM hook is invoked when an infallible memory allocation fails, before the runtime aborts. The default hook prints a message to standard error, but this behavior can be customized with the `set_oom_hook` and `take_oom_hook` functions.

The hook is provided with a `Layout` struct which contains information about the allocation that failed.

The OOM hook is a global resource.

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