Paolo Bonzini 201ef001dd rust: qdev: add clock creation
Add a Rust version of qdev_init_clock_in, which can be used in
instance_init.  There are a couple differences with the C
version:

- in Rust the object keeps its own reference to the clock (in addition to
  the one embedded in the NamedClockList), and the reference is dropped
  automatically by instance_finalize(); this is encoded in the signature
  of DeviceClassMethods::init_clock_in, which makes the lifetime of the
  clock independent of that of the object it holds.  This goes unnoticed
  in the C version and is due to the existence of aliases.

- also, anything that happens during instance_init uses the pinned_init
  framework to operate on a partially initialized object, and is done
  through class methods (i.e. through DeviceClassMethods rather than
  DeviceMethods) because the device does not exist yet.  Therefore, Rust
  code *must* create clocks from instance_init, which is stricter than C.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-02-13 12:19:33 +01:00
..
2025-02-13 12:19:33 +01:00

QEMU bindings and API wrappers

This library exports helper Rust types, Rust macros and C FFI bindings for internal QEMU APIs.

The C bindings can be generated with bindgen, using this build target:

$ make bindings.inc.rs

Generate Rust documentation

Common Cargo tasks can be performed from the QEMU build directory

$ make clippy
$ make rustfmt
$ make rustdoc