Module libffi::middle

Middle layer providing a somewhat safer (but still quite unsafe) API.

The main idea of the middle layer is to wrap types low::ffi_cif and low::ffi_closure as Cif and Closure, respectively, so that their resources are managed properly. However, calling a function via a CIF or closure is still unsafe because argument types aren’t checked. See the high layer for closures with type-checked arguments.

Re-exports

• pub use crate::low::Callback;
• pub use crate::low::CallbackMut;
• pub use crate::low::CodePtr;

Structs

• Arg
  Contains an untyped pointer to a function argument.
• Builder
  Provides a builder-style API for constructing CIFs and closures.
• Cif
  Describes the calling convention and types for calling a function.
• Closure
  Represents a closure callable from C.
• ClosureOnce
  A closure that owns needs-drop data.
• Type
  Represents a single C type.

Constants

• ffi_abi_FFI_DEFAULT_ABI

Functions

• arg
  Coerces an argument reference into the Arg type.

Type Definitions

• CallbackOnce
  The type of callback invoked by a ClosureOnce.
• FfiAbi