Rust Refactor Stage 4: Rewrite Rust graph runtime to use new APIs

rust/Cargo.toml

@@ -32,4 +32,9 @@ members = [
 	"tvm-macros",
 	"tvm-rt",
 	"tvm",
+	"tvm-graph-rt",
+	"tvm-graph-rt/tests/test_tvm_basic",
+	"tvm-graph-rt/tests/test_tvm_dso",
+	"tvm-graph-rt/tests/test_wasm32",
+	"tvm-graph-rt/tests/test_nn",
 ]

rust/runtime/src/graph.rs

@@ -24,6 +24,7 @@ use nom::{
     character::complete::{alpha1, digit1},
     number::complete::{le_i32, le_i64, le_u16, le_u32, le_u64, le_u8},
 };
+
 use serde;
 use serde_json;
 use tvm_common::{

rust/tvm-graph-rt/Cargo.toml

@@ -0,0 +1,44 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+[package]
+name = "tvm-graph-rt"
+version = "0.1.0"
+license = "Apache-2.0"
+description = "A static graph runtime for TVM."
+repository = "https://github.com/apache/incubator-tvm"
+readme = "README.md"
+keywords = ["tvm"]
+categories = ["api-bindings", "science"]
+authors = ["TVM Contributors"]
+edition = "2018"
+
+[dependencies]
+crossbeam = "0.7.3"
+failure = "0.1"
+itertools = "0.8"
+lazy_static = "1.4"
+ndarray="0.12"
+nom = "5.0"
+num_cpus = "1.10"
+serde = { version = "^1.0", features = ["derive"] }
+serde_json = "^1.0"
+tvm-sys = { version = "0.1", path = "../tvm-sys" }
+tvm-macros = { version = "0.1", path = "../tvm-macros" }
+
+[target.'cfg(not(any(target_arch = "wasm32", target_env = "sgx")))'.dependencies]
+libloading = "0.5"

rust/tvm-graph-rt/src/allocator.rs

@@ -0,0 +1,73 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+use std::alloc::{self, Layout, LayoutErr};
+
+const DEFAULT_ALIGN_BYTES: usize = 4;
+
+#[derive(PartialEq, Eq)]
+pub struct Allocation {
+    layout: Layout,
+    ptr: *mut u8,
+}
+
+impl Allocation {
+    /// Allocates a chunk of memory of `size` bytes with optional alignment.
+    pub fn new(size: usize, align: Option<usize>) -> Result<Self, LayoutErr> {
+        let alignment = align.unwrap_or(DEFAULT_ALIGN_BYTES);
+        let layout = Layout::from_size_align(size, alignment)?;
+        let ptr = unsafe { alloc::alloc(layout) };
+        if ptr.is_null() {
+            alloc::handle_alloc_error(layout);
+        }
+        Ok(Self { ptr, layout })
+    }
+
+    pub fn as_mut_ptr(&self) -> *mut u8 {
+        self.ptr
+    }
+
+    /// Returns the size of the Allocation in bytes.
+    pub fn size(&self) -> usize {
+        self.layout.size()
+    }
+
+    /// Returns the byte alignment of the Allocation.
+    pub fn align(&self) -> usize {
+        self.layout.align()
+    }
+
+    /// Returns a view of the Allocation.
+    pub fn as_slice(&self) -> &[u8] {
+        unsafe { std::slice::from_raw_parts(self.as_mut_ptr(), self.size()) }
+    }
+
+    /// Returns a mutable view of the Allocation.
+    pub fn as_mut_slice(&mut self) -> &mut [u8] {
+        unsafe { std::slice::from_raw_parts_mut(self.as_mut_ptr(), self.size()) }
+    }
+}
+
+impl Drop for Allocation {
+    fn drop(&mut self) {
+        unsafe {
+            alloc::dealloc(self.ptr, self.layout);
+        }
+    }
+}