feat/cudnn: add cudnn ffi

src/frameworks/cuda/api/dnn/error.rs

@@ -0,0 +1,77 @@
+//! Provides Rust Errors for CUDA's cuDNN status.
+
+use std::{fmt, error};
+
+#[derive(Debug, Copy, Clone)]
+/// Defines CUDA's cuDNN errors.
+pub enum Error {
+    /// Failure with CUDA cuDNN initialization.
+    NotInitialized(&'static str),
+    /// Failure with allocation.
+    AllocFailed(&'static str),
+    /// Failure with a provided parameter.
+    BadParam(&'static str),
+    /// Failure with cuDNN.
+    InternalError(&'static str),
+    /// Failure with provided value.
+    InvalidValue(&'static str),
+    /// Failure with the hardware architecture.
+    ArchMismatch(&'static str),
+    /// Failure with memory access or internal error/bug.
+    MappingError(&'static str),
+    /// Failure with Kernel execution.
+    ExecutionFailed(&'static str),
+    /// Failure with an unsupported request.
+    NotSupported(&'static str),
+    /// Failure Cuda License.
+    LicenseError(&'static str),
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            Error::NotInitialized(ref err) => write!(f, "{:?}", err),
+            Error::AllocFailed(ref err) => write!(f, "{:?}", err),
+            Error::BadParam(ref err) => write!(f, "{:?}", err),
+            Error::InternalError(ref err) => write!(f, "{:?}", err),
+            Error::InvalidValue(ref err) => write!(f, "{:?}", err),
+            Error::ArchMismatch(ref err) => write!(f, "{:?}", err),
+            Error::MappingError(ref err) => write!(f, "{:?}", err),
+            Error::ExecutionFailed(ref err) => write!(f, "{:?}", err),
+            Error::NotSupported(ref err) => write!(f, "{:?}", err),
+            Error::LicenseError(ref err) => write!(f, "{:?}", err),
+        }
+    }
+}
+
+impl error::Error for Error {
+    fn description(&self) -> &str {
+        match *self {
+            Error::NotInitialized(ref err) => err,
+            Error::AllocFailed(ref err) => err,
+            Error::BadParam(ref err) => err,
+            Error::InternalError(ref err) => err,
+            Error::InvalidValue(ref err) => err,
+            Error::ArchMismatch(ref err) => err,
+            Error::MappingError(ref err) => err,
+            Error::ExecutionFailed(ref err) => err,
+            Error::NotSupported(ref err) => err,
+            Error::LicenseError(ref err) => err,
+        }
+    }
+
+    fn cause(&self) -> Option<&error::Error> {
+        match *self {
+            Error::NotInitialized(_) => None,
+            Error::AllocFailed(_) => None,
+            Error::BadParam(_) => None,
+            Error::InternalError(_) => None,
+            Error::InvalidValue(_) => None,
+            Error::ArchMismatch(_) => None,
+            Error::MappingError(_) => None,
+            Error::ExecutionFailed(_) => None,
+            Error::NotSupported(_) => None,
+            Error::LicenseError(_) => None,
+        }
+    }
+}