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|
use super::{
context::{Context, ContextData},
CUresult, GlobalState,
};
use std::{mem, ptr};
use super::{HasLivenessCookie, LiveCheck};
pub type Stream = LiveCheck<StreamData>;
pub const CU_STREAM_LEGACY: *mut Stream = 1 as *mut _;
pub const CU_STREAM_PER_THREAD: *mut Stream = 2 as *mut _;
impl HasLivenessCookie for StreamData {
#[cfg(target_pointer_width = "64")]
const COOKIE: usize = 0x512097354de18d35;
#[cfg(target_pointer_width = "32")]
const COOKIE: usize = 0x77d5cc0b;
const LIVENESS_FAIL: CUresult = CUresult::CUDA_ERROR_INVALID_HANDLE;
fn try_drop(&mut self) -> Result<(), CUresult> {
if self.context != ptr::null_mut() {
let context = unsafe { &mut *self.context };
if !context.streams.remove(&(self as *mut _)) {
return Err(CUresult::CUDA_ERROR_UNKNOWN);
}
}
Ok(())
}
}
pub struct StreamData {
pub context: *mut ContextData,
pub queue: l0::CommandQueue<'static>,
}
impl StreamData {
pub fn new_unitialized(ctx: &'static l0::Context, dev: l0::Device) -> Result<Self, CUresult> {
Ok(StreamData {
context: ptr::null_mut(),
queue: l0::CommandQueue::new(ctx, dev)?,
})
}
pub fn new(ctx: &mut ContextData) -> Result<Self, CUresult> {
let l0_ctx = &mut unsafe { &mut *ctx.device }.l0_context;
let l0_dev = unsafe { &*ctx.device }.base;
Ok(StreamData {
context: ctx as *mut _,
queue: l0::CommandQueue::new(l0_ctx, l0_dev)?,
})
}
pub fn command_list(&self) -> Result<l0::CommandList, l0::sys::_ze_result_t> {
let ctx = unsafe { &mut *self.context };
let dev = unsafe { &mut *ctx.device };
l0::CommandList::new(&mut dev.l0_context, dev.base)
}
}
impl Drop for StreamData {
fn drop(&mut self) {
if self.context == ptr::null_mut() {
return;
}
unsafe { (&mut *self.context).streams.remove(&(&mut *self as *mut _)) };
}
}
pub(crate) fn get_ctx(hstream: *mut Stream, pctx: *mut *mut Context) -> Result<(), CUresult> {
if pctx == ptr::null_mut() {
return Err(CUresult::CUDA_ERROR_INVALID_VALUE);
}
let ctx_ptr = GlobalState::lock_stream(hstream, |stream| stream.context)?;
if ctx_ptr == ptr::null_mut() {
return Err(CUresult::CUDA_ERROR_CONTEXT_IS_DESTROYED);
}
unsafe { *pctx = Context::ptr_from_inner(ctx_ptr) };
Ok(())
}
pub(crate) fn create(phstream: *mut *mut Stream, _flags: u32) -> Result<(), CUresult> {
let stream_ptr = GlobalState::lock_current_context(|ctx| {
let mut stream_box = Box::new(Stream::new(StreamData::new(ctx)?));
let stream_ptr = stream_box.as_mut().as_option_mut().unwrap() as *mut _;
if !ctx.streams.insert(stream_ptr) {
return Err(CUresult::CUDA_ERROR_UNKNOWN);
}
mem::forget(stream_box);
Ok::<_, CUresult>(stream_ptr)
})??;
unsafe { *phstream = Stream::ptr_from_inner(stream_ptr) };
Ok(())
}
pub(crate) fn destroy_v2(pstream: *mut Stream) -> Result<(), CUresult> {
if pstream == ptr::null_mut() || pstream == CU_STREAM_LEGACY || pstream == CU_STREAM_PER_THREAD
{
return Err(CUresult::CUDA_ERROR_INVALID_VALUE);
}
GlobalState::lock(|_| Stream::destroy_impl(pstream))?
}
#[cfg(test)]
mod test {
use crate::cuda::CUstream;
use super::super::test::CudaDriverFns;
use super::super::CUresult;
use std::{ptr, thread};
const CU_STREAM_LEGACY: CUstream = 1 as *mut _;
const CU_STREAM_PER_THREAD: CUstream = 2 as *mut _;
cuda_driver_test!(default_stream_uses_current_ctx_legacy);
cuda_driver_test!(default_stream_uses_current_ctx_ptsd);
fn default_stream_uses_current_ctx_legacy<T: CudaDriverFns>() {
default_stream_uses_current_ctx_impl::<T>(CU_STREAM_LEGACY);
}
fn default_stream_uses_current_ctx_ptsd<T: CudaDriverFns>() {
default_stream_uses_current_ctx_impl::<T>(CU_STREAM_PER_THREAD);
}
fn default_stream_uses_current_ctx_impl<T: CudaDriverFns>(stream: CUstream) {
assert_eq!(T::cuInit(0), CUresult::CUDA_SUCCESS);
let mut ctx1 = ptr::null_mut();
assert_eq!(T::cuCtxCreate_v2(&mut ctx1, 0, 0), CUresult::CUDA_SUCCESS);
let mut stream_ctx1 = ptr::null_mut();
assert_eq!(
T::cuStreamGetCtx(stream, &mut stream_ctx1),
CUresult::CUDA_SUCCESS
);
assert_eq!(ctx1, stream_ctx1);
let mut ctx2 = ptr::null_mut();
assert_eq!(T::cuCtxCreate_v2(&mut ctx2, 0, 0), CUresult::CUDA_SUCCESS);
assert_ne!(ctx1, ctx2);
let mut stream_ctx2 = ptr::null_mut();
assert_eq!(
T::cuStreamGetCtx(stream, &mut stream_ctx2),
CUresult::CUDA_SUCCESS
);
assert_eq!(ctx2, stream_ctx2);
// Cleanup
assert_eq!(T::cuCtxDestroy_v2(ctx1), CUresult::CUDA_SUCCESS);
assert_eq!(T::cuCtxDestroy_v2(ctx2), CUresult::CUDA_SUCCESS);
}
cuda_driver_test!(stream_context_destroyed);
fn stream_context_destroyed<T: CudaDriverFns>() {
assert_eq!(T::cuInit(0), CUresult::CUDA_SUCCESS);
let mut ctx = ptr::null_mut();
assert_eq!(T::cuCtxCreate_v2(&mut ctx, 0, 0), CUresult::CUDA_SUCCESS);
let mut stream = ptr::null_mut();
assert_eq!(T::cuStreamCreate(&mut stream, 0), CUresult::CUDA_SUCCESS);
let mut stream_ctx1 = ptr::null_mut();
assert_eq!(
T::cuStreamGetCtx(stream, &mut stream_ctx1),
CUresult::CUDA_SUCCESS
);
assert_eq!(stream_ctx1, ctx);
assert_eq!(T::cuCtxDestroy_v2(ctx), CUresult::CUDA_SUCCESS);
let mut stream_ctx2 = ptr::null_mut();
// When a context gets destroyed, its streams are also destroyed
let cuda_result = T::cuStreamGetCtx(stream, &mut stream_ctx2);
assert!(
cuda_result == CUresult::CUDA_ERROR_INVALID_HANDLE
|| cuda_result == CUresult::CUDA_ERROR_INVALID_CONTEXT
|| cuda_result == CUresult::CUDA_ERROR_CONTEXT_IS_DESTROYED
);
assert_eq!(
T::cuStreamDestroy_v2(stream),
CUresult::CUDA_ERROR_INVALID_HANDLE
);
// Check if creating another context is possible
let mut ctx2 = ptr::null_mut();
assert_eq!(T::cuCtxCreate_v2(&mut ctx2, 0, 0), CUresult::CUDA_SUCCESS);
// Cleanup
assert_eq!(T::cuCtxDestroy_v2(ctx2), CUresult::CUDA_SUCCESS);
}
cuda_driver_test!(stream_moves_context_to_another_thread);
fn stream_moves_context_to_another_thread<T: CudaDriverFns>() {
assert_eq!(T::cuInit(0), CUresult::CUDA_SUCCESS);
let mut ctx = ptr::null_mut();
assert_eq!(T::cuCtxCreate_v2(&mut ctx, 0, 0), CUresult::CUDA_SUCCESS);
let mut stream = ptr::null_mut();
assert_eq!(T::cuStreamCreate(&mut stream, 0), CUresult::CUDA_SUCCESS);
let mut stream_ctx1 = ptr::null_mut();
assert_eq!(
T::cuStreamGetCtx(stream, &mut stream_ctx1),
CUresult::CUDA_SUCCESS
);
assert_eq!(stream_ctx1, ctx);
let stream_ptr = stream as usize;
let stream_ctx_on_thread = thread::spawn(move || {
let mut stream_ctx2 = ptr::null_mut();
assert_eq!(
T::cuStreamGetCtx(stream_ptr as *mut _, &mut stream_ctx2),
CUresult::CUDA_SUCCESS
);
stream_ctx2 as usize
})
.join()
.unwrap();
assert_eq!(stream_ctx1, stream_ctx_on_thread as *mut _);
// Cleanup
assert_eq!(T::cuStreamDestroy_v2(stream), CUresult::CUDA_SUCCESS);
assert_eq!(T::cuCtxDestroy_v2(ctx), CUresult::CUDA_SUCCESS);
}
cuda_driver_test!(can_destroy_stream);
fn can_destroy_stream<T: CudaDriverFns>() {
assert_eq!(T::cuInit(0), CUresult::CUDA_SUCCESS);
let mut ctx = ptr::null_mut();
assert_eq!(T::cuCtxCreate_v2(&mut ctx, 0, 0), CUresult::CUDA_SUCCESS);
let mut stream = ptr::null_mut();
assert_eq!(T::cuStreamCreate(&mut stream, 0), CUresult::CUDA_SUCCESS);
assert_eq!(T::cuStreamDestroy_v2(stream), CUresult::CUDA_SUCCESS);
// Cleanup
assert_eq!(T::cuCtxDestroy_v2(ctx), CUresult::CUDA_SUCCESS);
}
cuda_driver_test!(cant_destroy_default_stream);
fn cant_destroy_default_stream<T: CudaDriverFns>() {
assert_eq!(T::cuInit(0), CUresult::CUDA_SUCCESS);
let mut ctx = ptr::null_mut();
assert_eq!(T::cuCtxCreate_v2(&mut ctx, 0, 0), CUresult::CUDA_SUCCESS);
assert_ne!(
T::cuStreamDestroy_v2(super::CU_STREAM_LEGACY as *mut _),
CUresult::CUDA_SUCCESS
);
// Cleanup
assert_eq!(T::cuCtxDestroy_v2(ctx), CUresult::CUDA_SUCCESS);
}
}
|
