Struct wasmtime_runtime::TlsRestore

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pub struct TlsRestore { /* private fields */ }
Expand description

Opaque state used to help control TLS state across stack switches for async support.

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impl TlsRestore

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pub unsafe fn take() -> TlsRestore

Takes the TLS state that is currently configured and returns a token that is used to replace it later.

This is not a safe operation since it’s intended to only be used with stack switching found with fibers and async wasmtime.

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pub unsafe fn replace(self)

Restores a previous tls state back into this thread’s TLS.

This is unsafe because it’s intended to only be used within the context of stack switching within wasmtime.

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