MIgrate some random files away from the torch:: namespace (#5836)

Summary:
Pull Request resolved: #5836

A couple tests and helpers that my previous passes didn't catch.

After this, the only remaining `//executorch/...` code under the `torch::` namespace is under `backends/...` and `kernels/...` (and in some other places that define kernels).

Reviewed By: cccclai

Differential Revision: D63797660

fbshipit-source-id: f4075d670c6b7f083c8c3ab1e9c465da32e8b3ac
(cherry picked from commit 3a25651)

exir/backend/test/demos/rpc/ExecutorBackend.cpp

@@ -21,8 +21,30 @@
 #include <executorch/runtime/executor/method.h>
 #include <executorch/runtime/executor/program.h>
 
-namespace torch {
-namespace executor {
+using ::executorch::aten::Tensor;
+using ::executorch::extension::BufferDataLoader;
+using ::executorch::runtime::ArrayRef;
+using ::executorch::runtime::Backend;
+using ::executorch::runtime::BackendExecutionContext;
+using ::executorch::runtime::BackendInitContext;
+using ::executorch::runtime::CompileSpec;
+using ::executorch::runtime::DelegateHandle;
+using ::executorch::runtime::Error;
+using ::executorch::runtime::EValue;
+using ::executorch::runtime::FreeableBuffer;
+using ::executorch::runtime::HierarchicalAllocator;
+using ::executorch::runtime::MemoryAllocator;
+using ::executorch::runtime::MemoryManager;
+using ::executorch::runtime::Method;
+using ::executorch::runtime::MethodMeta;
+using ::executorch::runtime::Program;
+using ::executorch::runtime::Result;
+using ::executorch::runtime::Span;
+using ::executorch::runtime::Tag;
+using ::executorch::runtime::internal::copy_tensor_data;
+
+namespace example {
+
 /**
  * ExecutorBackend is a backend to execute an executorch program via delegate.
  * In preprocess, the preprocesed bytes (delegate blob) is an executorch
@@ -51,8 +73,8 @@ class ExecutorBackend final : public ::executorch::runtime::BackendInterface {
     // will return the data directly without copying it.
     MemoryAllocator* runtime_allocator = context.get_runtime_allocator();
     auto loader = ET_ALLOCATE_INSTANCE_OR_RETURN_ERROR(
-        runtime_allocator, util::BufferDataLoader);
-    new (loader) util::BufferDataLoader(processed->data(), processed->size());
+        runtime_allocator, BufferDataLoader);
+    new (loader) BufferDataLoader(processed->data(), processed->size());
     // Can't free `processed` because the program will point into that memory.
 
     // Try loading the program.
@@ -150,7 +172,7 @@ class ExecutorBackend final : public ::executorch::runtime::BackendInterface {
       if (output.tag == Tag::Tensor) {
         Tensor t_src = output.toTensor();
         Tensor t_dst = args[num_inputs + i]->toTensor();
-        status = internal::copy_tensor_data(t_dst, t_src);
+        status = copy_tensor_data(t_dst, t_src);
       }
     }
 
@@ -165,12 +187,11 @@ class ExecutorBackend final : public ::executorch::runtime::BackendInterface {
   }
 };
 
-Error registerExecutorBackend() {
+Error register_executor_backend() {
   static auto cls = ExecutorBackend();
   static Backend backend{"ExecutorBackend", &cls};
   static auto success_with_compiler = register_backend(backend);
   return success_with_compiler;
 }
 
-} // namespace executor
-} // namespace torch
+} // namespace example

exir/backend/test/demos/rpc/ExecutorBackend.h

@@ -10,10 +10,8 @@
 
 #include <executorch/runtime/core/error.h>
 
-namespace torch {
-namespace executor {
+namespace example {
 
-Error registerExecutorBackend();
+::executorch::runtime::Error register_executor_backend();
 
-} // namespace executor
-} // namespace torch
+} // namespace example

exir/backend/test/demos/rpc/ExecutorBackendRegister.cpp

@@ -10,10 +10,9 @@
 #include <executorch/runtime/backend/interface.h>
 #include <executorch/runtime/core/error.h>
 
-namespace torch {
-namespace executor {
+namespace example {
 namespace {
-static Error register_success = registerExecutorBackend();
+static ::executorch::runtime::Error register_success =
+    register_executor_backend();
 } // namespace
-} // namespace executor
-} // namespace torch
+} // namespace example

runtime/core/test/evalue_test.cpp

@@ -16,9 +16,6 @@
 
 using namespace ::testing;
 
-namespace torch {
-namespace executor {
-
 using exec_aten::ScalarType;
 using executorch::runtime::BoxedEvalueList;
 using executorch::runtime::EValue;
@@ -30,7 +27,7 @@ class EValueTest : public ::testing::Test {
   void SetUp() override {
     // Since these tests cause ET_LOG to be called, the PAL must be initialized
     // first.
-    runtime_init();
+    executorch::runtime::runtime_init();
   }
 };
 
@@ -276,6 +273,3 @@ TEST_F(EValueTest, ConstructFromNullPtrAborts) {
 
   ET_EXPECT_DEATH({ EValue evalue(null_ptr); }, "");
 }
-
-} // namespace executor
-} // namespace torch

test/utils/alignment.h

@@ -12,8 +12,8 @@
 
 #include <gmock/gmock.h> // For MATCHER_P
 
-namespace torch {
-namespace executor {
+namespace executorch {
+namespace runtime {
 namespace testing {
 
 /**
@@ -28,7 +28,7 @@ inline bool is_aligned(const void* ptr, size_t alignment) {
  * Lets gtest users write `EXPECT_THAT(ptr, IsAlignedTo(alignment))` or
  * `EXPECT_THAT(ptr, Not(IsAlignedTo(alignment)))`.
  *
- * See also `EXPECT_POINTER_IS_ALIGNED_TO()`.
+ * See also `EXPECT_ALIGNED()`.
  */
 MATCHER_P(IsAlignedTo, other, "") {
   return is_aligned(arg, other);
@@ -39,10 +39,10 @@ MATCHER_P(IsAlignedTo, other, "") {
  */
 
 #define EXPECT_ALIGNED(ptr, alignment) \
-  EXPECT_THAT((ptr), torch::executor::testing::IsAlignedTo((alignment)))
+  EXPECT_THAT((ptr), executorch::runtime::testing::IsAlignedTo((alignment)))
 #define ASSERT_ALIGNED(ptr, alignment) \
-  ASSERT_THAT((ptr), torch::executor::testing::IsAlignedTo((alignment)))
+  ASSERT_THAT((ptr), executorch::runtime::testing::IsAlignedTo((alignment)))
 
 } // namespace testing
-} // namespace executor
-} // namespace torch
+} // namespace runtime
+} // namespace executorch