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use hip_runtime_sys::hipError_t;
use crate::cuda::{CUctx_st, CUdevice, CUdeviceptr, CUfunc_st, CUmod_st, CUresult, CUstream_st};
use std::{
ffi::c_void,
mem::{self, ManuallyDrop},
os::raw::c_int,
ptr,
sync::Mutex,
sync::TryLockError,
};
#[cfg(test)]
#[macro_use]
pub mod test;
pub mod device;
pub mod export_table;
pub mod function;
#[cfg_attr(windows, path = "os_win.rs")]
#[cfg_attr(not(windows), path = "os_unix.rs")]
pub(crate) mod os;
pub(crate) 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: Sized {
const COOKIE: usize;
const LIVENESS_FAIL: CUresult;
fn try_drop(&mut self) -> Result<(), CUresult>;
}
// 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),
}
}
fn destroy_impl(this: *mut Self) -> Result<(), CUresult> {
let mut ctx_box = ManuallyDrop::new(unsafe { Box::from_raw(this) });
ctx_box.try_drop()?;
unsafe { ManuallyDrop::drop(&mut ctx_box) };
Ok(())
}
unsafe fn ptr_from_inner(this: *mut T) -> *mut Self {
let outer_ptr = (this as *mut u8).sub(mem::size_of::<usize>());
outer_ptr as *mut Self
}
pub unsafe fn as_ref_unchecked(&self) -> &T {
&self.data
}
pub fn as_option_mut(&mut self) -> Option<&mut T> {
if self.cookie == T::COOKIE {
Some(&mut self.data)
} else {
None
}
}
pub fn as_result(&self) -> Result<&T, CUresult> {
if self.cookie == T::COOKIE {
Ok(&self.data)
} else {
Err(T::LIVENESS_FAIL)
}
}
pub fn as_result_mut(&mut self) -> Result<&mut T, CUresult> {
if self.cookie == T::COOKIE {
Ok(&mut self.data)
} else {
Err(T::LIVENESS_FAIL)
}
}
#[must_use]
pub fn try_drop(&mut self) -> Result<(), CUresult> {
if self.cookie == T::COOKIE {
self.cookie = 0;
self.data.try_drop()?;
unsafe { ManuallyDrop::drop(&mut self.data) };
return Ok(());
}
Err(T::LIVENESS_FAIL)
}
}
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<T> From<TryLockError<T>> for CUresult {
fn from(_: TryLockError<T>) -> Self {
CUresult::CUDA_ERROR_ILLEGAL_STATE
}
}
impl From<ocl_core::Error> for CUresult {
fn from(result: ocl_core::Error) -> Self {
match result {
_ => CUresult::CUDA_ERROR_UNKNOWN,
}
}
}
impl From<hip_runtime_sys::hipError_t> for CUresult {
fn from(result: hip_runtime_sys::hipError_t) -> Self {
match result {
hip_runtime_sys::hipError_t::hipErrorRuntimeMemory
| hip_runtime_sys::hipError_t::hipErrorRuntimeOther => CUresult::CUDA_ERROR_UNKNOWN,
hip_runtime_sys::hipError_t(e) => CUresult(e),
}
}
}
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 () {
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(),
}
}
}
impl Encuda for hipError_t {
type To = CUresult;
fn encuda(self: Self) -> Self::To {
self.into()
}
}
unsafe fn transmute_lifetime<'a, 'b, T: ?Sized>(t: &'a T) -> &'b T {
mem::transmute(t)
}
unsafe fn transmute_lifetime_mut<'a, 'b, T: ?Sized>(t: &'a mut T) -> &'b mut T {
mem::transmute(t)
}
pub fn driver_get_version() -> c_int {
i32::max_value()
}
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 _
}
}
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