Updating curand api to use device ptr to accept views (#318)

src/curand/safe.rs

@@ -1,7 +1,7 @@
 //! Safe abstractions around [crate::curand::result] with [CudaRng].
 
 use super::{result, sys};
-use crate::driver::{CudaDevice, CudaSlice, DeviceSlice};
+use crate::driver::{CudaDevice, DevicePtrMut};
 use std::sync::Arc;
 
 /// Host side RNG that can fill [CudaSlice] with random values.
@@ -51,38 +51,55 @@ impl CudaRng {
     }
 
     /// Fill the [CudaSlice] with data from a `Uniform` distribution
-    pub fn fill_with_uniform<T>(&self, t: &mut CudaSlice<T>) -> Result<(), result::CurandError>
+    pub fn fill_with_uniform<T, Dst: DevicePtrMut<T>>(
+        &self,
+        dst: &mut Dst,
+    ) -> Result<(), result::CurandError>
     where
         sys::curandGenerator_t: result::UniformFill<T>,
     {
-        unsafe { result::UniformFill::fill(self.gen, t.cu_device_ptr as *mut T, t.len()) }
+        unsafe { result::UniformFill::fill(self.gen, *dst.device_ptr_mut() as *mut T, dst.len()) }
     }
 
     /// Fill the [CudaSlice] with data from a `Normal(mean, std)` distribution.
-    pub fn fill_with_normal<T>(
+    pub fn fill_with_normal<T, Dst: DevicePtrMut<T>>(
         &self,
-        t: &mut CudaSlice<T>,
+        dst: &mut Dst,
         mean: T,
         std: T,
     ) -> Result<(), result::CurandError>
     where
         sys::curandGenerator_t: result::NormalFill<T>,
     {
-        unsafe { result::NormalFill::fill(self.gen, t.cu_device_ptr as *mut T, t.len(), mean, std) }
+        unsafe {
+            result::NormalFill::fill(
+                self.gen,
+                *dst.device_ptr_mut() as *mut T,
+                dst.len(),
+                mean,
+                std,
+            )
+        }
     }
 
     /// Fill the `CudaRc` with data from a `LogNormal(mean, std)` distribution.
-    pub fn fill_with_log_normal<T>(
+    pub fn fill_with_log_normal<T, Dst: DevicePtrMut<T>>(
         &self,
-        t: &mut CudaSlice<T>,
+        dst: &mut Dst,
         mean: T,
         std: T,
     ) -> Result<(), result::CurandError>
     where
         sys::curandGenerator_t: result::LogNormalFill<T>,
     {
         unsafe {
-            result::LogNormalFill::fill(self.gen, t.cu_device_ptr as *mut T, t.len(), mean, std)
+            result::LogNormalFill::fill(
+                self.gen,
+                *dst.device_ptr_mut() as *mut T,
+                dst.len(),
+                mean,
+                std,
+            )
         }
     }
 }