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use crate::cuda::{CUctx_st, CUdevice, CUdeviceptr, CUfunction, CUmod_st, CUmodule, CUresult};
use std::{ffi::c_void, mem::{self, ManuallyDrop}, os::raw::c_int, sync::Mutex};
#[cfg(test)]
#[macro_use]
pub mod test;
pub mod context;
pub mod device;
pub mod export_table;
pub mod memory;
pub mod module;
#[cfg(debug_assertions)]
pub fn unimplemented() -> CUresult {
unimplemented!()
}
#[cfg(not(debug_assertions))]
pub fn unimplemented() -> CUresult {
CUresult::CUDA_ERROR_NOT_SUPPORTED
}
pub trait HasLivenessCookie {
const COOKIE: usize;
}
// This struct is a best-effort check if wrapped value has been dropped,
// while it's inherently safe, its use coming from FFI is very unsafe
#[repr(C)]
pub struct LiveCheck<T: HasLivenessCookie> {
cookie: usize,
data: ManuallyDrop<T>,
}
impl<T: HasLivenessCookie> LiveCheck<T> {
pub fn new(data: T) -> Self {
LiveCheck {
cookie: T::COOKIE,
data: ManuallyDrop::new(data),
}
}
pub unsafe fn as_ref_unchecked(&self) -> &T {
&self.data
}
pub fn as_ref(&self) -> Option<&T> {
if self.cookie == T::COOKIE {
Some(&self.data)
} else {
None
}
}
pub fn as_mut(&mut self) -> Option<&mut T> {
if self.cookie == T::COOKIE {
Some(&mut self.data)
} else {
None
}
}
#[must_use]
pub fn try_drop(&mut self) -> bool {
if self.cookie == T::COOKIE {
self.cookie = 0;
unsafe { ManuallyDrop::drop(&mut self.data) };
return true;
}
false
}
}
impl<T: HasLivenessCookie> Drop for LiveCheck<T> {
fn drop(&mut self) {
self.cookie = 0;
}
}
pub trait CudaRepr: Sized {
type Impl: Sized;
}
impl<T: CudaRepr> CudaRepr for *mut T {
type Impl = *mut T::Impl;
}
pub trait Decuda<To> {
fn decuda(self: Self) -> To;
}
impl<T: CudaRepr> Decuda<*mut T::Impl> for *mut T {
fn decuda(self: Self) -> *mut T::Impl {
self as *mut _
}
}
impl From<l0::sys::ze_result_t> for CUresult {
fn from(result: l0::sys::ze_result_t) -> Self {
match result {
l0::sys::ze_result_t::ZE_RESULT_SUCCESS => CUresult::CUDA_SUCCESS,
l0_sys::ze_result_t::ZE_RESULT_ERROR_UNINITIALIZED => {
CUresult::CUDA_ERROR_NOT_INITIALIZED
}
l0_sys::ze_result_t::ZE_RESULT_ERROR_INVALID_ENUMERATION => {
CUresult::CUDA_ERROR_INVALID_VALUE
}
l0_sys::ze_result_t::ZE_RESULT_ERROR_INVALID_ARGUMENT => {
CUresult::CUDA_ERROR_INVALID_VALUE
}
l0_sys::ze_result_t::ZE_RESULT_ERROR_OUT_OF_HOST_MEMORY => {
CUresult::CUDA_ERROR_OUT_OF_MEMORY
}
l0_sys::ze_result_t::ZE_RESULT_ERROR_UNSUPPORTED_FEATURE => {
CUresult::CUDA_ERROR_NOT_SUPPORTED
}
_ => CUresult::CUDA_ERROR_UNKNOWN,
}
}
}
pub trait Encuda {
type To: Sized;
fn encuda(self: Self) -> Self::To;
}
impl Encuda for CUresult {
type To = CUresult;
fn encuda(self: Self) -> Self::To {
self
}
}
impl Encuda for l0::sys::ze_result_t {
type To = CUresult;
fn encuda(self: Self) -> Self::To {
self.into()
}
}
impl Encuda for () {
type To = CUresult;
fn encuda(self: Self) -> Self::To {
CUresult::CUDA_SUCCESS
}
}
impl<T1: Encuda<To = CUresult>, T2: Encuda<To = CUresult>> Encuda for Result<T1, T2> {
type To = CUresult;
fn encuda(self: Self) -> Self::To {
match self {
Ok(e) => e.encuda(),
Err(e) => e.encuda(),
}
}
}
pub enum Error {
L0(l0::sys::ze_result_t),
Cuda(CUresult),
}
impl Encuda for Error {
type To = CUresult;
fn encuda(self: Self) -> Self::To {
match self {
Error::L0(e) => e.into(),
Error::Cuda(e) => e,
}
}
}
lazy_static! {
static ref GLOBAL_STATE: Mutex<Option<GlobalState>> = Mutex::new(None);
}
struct GlobalState {
driver: l0::Driver,
}
unsafe impl Send for GlobalState {}
// TODO: implement
fn is_intel_gpu_driver(_: &l0::Driver) -> bool {
true
}
pub fn init() -> l0::Result<()> {
let mut global_state = GLOBAL_STATE
.lock()
.map_err(|_| l0::sys::ze_result_t::ZE_RESULT_ERROR_UNKNOWN)?;
if global_state.is_some() {
return Ok(());
}
l0::init()?;
let drivers = l0::Driver::get()?;
let driver = match drivers.into_iter().find(is_intel_gpu_driver) {
None => return Err(l0::sys::ze_result_t::ZE_RESULT_ERROR_UNKNOWN),
Some(driver) => {
device::init(&driver)?;
driver
}
};
*global_state = Some(GlobalState { driver });
drop(global_state);
Ok(())
}
unsafe fn transmute_lifetime<'a, 'b, T: ?Sized>(t: &'a T) -> &'b T {
mem::transmute(t)
}
pub fn driver_get_version() -> c_int {
i32::max_value()
}
impl<'a> CudaRepr for CUctx_st {
type Impl = context::Context;
}
impl<'a> CudaRepr for CUdevice {
type Impl = device::Index;
}
impl Decuda<device::Index> for CUdevice {
fn decuda(self) -> device::Index {
device::Index(self.0)
}
}
impl<'a> CudaRepr for CUdeviceptr {
type Impl = *mut c_void;
}
impl Decuda<*mut c_void> for CUdeviceptr {
fn decuda(self) -> *mut c_void {
self.0 as *mut _
}
}
impl<'a> CudaRepr for CUmod_st {
type Impl = module::Module;
}
impl<'a> CudaRepr for CUfunction {
type Impl = *mut module::Function;
}
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