core::arch::arm::__dsb - Rust
Description: API documentation for the Rust `__dsb` fn in crate `core`.
Keywords: rust, rustlang, rust-lang, __dsb

# [−][src]Function core::arch::arm::__dsb

    pub unsafe fn __dsb<A>(arg: A) where
        A: Dsb,

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on ARM only.

Generates a DSB (data synchronization barrier) instruction or equivalent CP15 instruction.

DSB ensures the completion of memory accesses. A DSB behaves as the equivalent DMB and has additional properties. After a DSB instruction completes, all memory accesses of the specified type issued before the DSB are guaranteed to have completed.

The __dsb() intrinsic also acts as a compiler memory barrier of the appropriate type.

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g., `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g., `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)