[REFACTOR][FFI] Phase out legacy C API

This PR phases out the legacy c api in favor of the new FFI C API.
Also removes the redirection sccafolding for registry.h

- include <tvm/runtime/registry.h> => include <tvm/ffi/function.h>
- include <tvm/runtime/c_runtime_api.h> => include <tvm/runtime/base.h>
- TVM_REGISTER_GLOBAL => TVM_FFI_REGISTER_GLOBAL

The cleanup will greatly simplify the overall FFI surface of the project
and allows us to move towards an unified clean API based on tvm ffi.

Author: tqchen

3rdparty/cutlass_fpA_intB_gemm

@@ -42,9 +42,8 @@
 #include "../ffi/src/ffi/object.cc"
 #include "../ffi/src/ffi/testing.cc"
 #include "../ffi/src/ffi/traceback.cc"
-#include "../src/runtime/c_runtime_api.cc"
-#include "../src/runtime/container.cc"
 #include "../src/runtime/cpu_device_api.cc"
+#include "../src/runtime/device_api.cc"
 #include "../src/runtime/dso_library.cc"
 #include "../src/runtime/file_utils.cc"
 #include "../src/runtime/library_module.cc"
@@ -53,7 +52,6 @@
 #include "../src/runtime/minrpc/minrpc_logger.cc"
 #include "../src/runtime/module.cc"
 #include "../src/runtime/ndarray.cc"
-#include "../src/runtime/object.cc"
 #include "../src/runtime/profiling.cc"
 #include "../src/runtime/registry.cc"
 #include "../src/runtime/rpc/rpc_channel.cc"

apps/android_rpc/app/src/main/jni/tvm_runtime.h

@@ -20,7 +20,9 @@
  * \file rpc_env.cc
  * \brief Server environment of the RPC.
  */
-#include <tvm/runtime/registry.h>
+#include <tvm/ffi/function.h>
+#include <tvm/runtime/logging.h>
+#include <tvm/runtime/module.h>
 
 #include <cerrno>
 #ifndef _WIN32

apps/cpp_rpc/rpc_env.cc

@@ -24,7 +24,7 @@
 #ifndef TVM_APPS_CPP_RPC_ENV_H_
 #define TVM_APPS_CPP_RPC_ENV_H_
 
-#include <tvm/runtime/registry.h>
+#include <tvm/ffi/function.h>
 
 #include <string>
 

apps/cpp_rpc/rpc_env.h

@@ -21,7 +21,7 @@
  * \file rpc_server.cc
  * \brief RPC Server implementation.
  */
-#include <tvm/runtime/registry.h>
+#include <tvm/ffi/function.h>
 #if defined(__linux__) || defined(__ANDROID__) || defined(__APPLE__)
 #include <signal.h>
 #include <sys/select.h>
@@ -398,6 +398,6 @@ void RPCServerCreate(std::string host, int port, int port_end, std::string track
   rpc.Start();
 }
 
-TVM_REGISTER_GLOBAL("rpc.ServerCreate").set_body_typed(RPCServerCreate);
+TVM_FFI_REGISTER_GLOBAL("rpc.ServerCreate").set_body_typed(RPCServerCreate);
 }  // namespace runtime
 }  // namespace tvm

apps/cpp_rpc/rpc_server.cc

@@ -26,7 +26,7 @@
 
 #include <string>
 
-#include "tvm/runtime/c_runtime_api.h"
+#include "tvm/runtime/base.h"
 
 namespace tvm {
 namespace runtime {

apps/cpp_rpc/rpc_server.h

@@ -19,9 +19,9 @@
 
 #include "launcher_core.h"
 
+#include <tvm/ffi/function.h>
 #include <tvm/runtime/c_backend_api.h>
 #include <tvm/runtime/packed_func.h>
-#include <tvm/runtime/registry.h>
 
 #include <fstream>
 #include <ios>

apps/hexagon_launcher/launcher_core.cc

@@ -23,8 +23,8 @@
 
 #import "RPCServer.h"
 
+#include <tvm/ffi/function.h>
 #include <tvm/runtime/packed_func.h>
-#include <tvm/runtime/registry.h>
 
 #include <random>
 #include <string>

apps/ios_rpc/tvmrpc/RPCServer.mm

@@ -23,7 +23,7 @@
 
 #import <Foundation/Foundation.h>
 
-#include <tvm/runtime/registry.h>
+#include <tvm/ffi/function.h>
 
 #include "RPCArgs.h"
 
@@ -51,14 +51,14 @@ void LogMessageImpl(const std::string& file, int lineno, int level, const std::s
 
 }  // namespace detail
 
-TVM_REGISTER_GLOBAL("tvm.rpc.server.workpath")
+TVM_FFI_REGISTER_GLOBAL("tvm.rpc.server.workpath")
     .set_body_packed([](ffi::PackedArgs args, ffi::Any* rv) {
       static const std::string base_ = NSTemporaryDirectory().UTF8String;
       const auto path = args[0].cast<std::string>();
       *rv = base_ + "/" + path;
     });
 
-TVM_REGISTER_GLOBAL("tvm.rpc.server.load_module")
+TVM_FFI_REGISTER_GLOBAL("tvm.rpc.server.load_module")
     .set_body_packed([](ffi::PackedArgs args, ffi::Any* rv) {
       auto name = args[0].cast<std::string>();
       std::string fmt = GetFileFormat(name, "");
@@ -109,7 +109,7 @@ void Init(const std::string& name) {
 };
 
 // Add UnsignedDSOLoader plugin in global registry
-TVM_REGISTER_GLOBAL("runtime.module.loadfile_dylib_custom")
+TVM_FFI_REGISTER_GLOBAL("runtime.module.loadfile_dylib_custom")
     .set_body_packed([](ffi::PackedArgs args, ffi::Any* rv) {
       auto n = make_object<UnsignedDSOLoader>();
       n->Init(args[0]);

apps/ios_rpc/tvmrpc/TVMRuntime.mm

@@ -153,18 +153,18 @@ then be registered with the following steps.
 
 #. Register the function to the tvm registry::
 
-     TVM_REGISTER_GLOBAL("device_api.foo").set_body_typed(FooDeviceAPI::Global);
+     TVM_FFI_REGISTER_GLOBAL("device_api.foo").set_body_typed(FooDeviceAPI::Global);
 
-.. _c_runtime_api.h: https://github.com/apache/tvm/blob/main/include/tvm/runtime/c_runtime_api.h
+.. _base.h: https://github.com/apache/tvm/blob/main/include/tvm/runtime/base.h
 
 #. Add an entry for the new DeviceAPI to the ``TVMDeviceExtType`` enum
-   in `c_runtime_api.h`_.  The value should be an unused value greater
+   in `base.h`_.  The value should be an unused value greater
    than ``DLDeviceType::kDLExtDev``, but less than
    ``DeviceAPIManager::kMaxDeviceAPI``.
 
 #. Add a case in ``DeviceName`` in `device_api.h`_ to convert from the
    enum value to a string representation.  This string representation
-   should match the name given to ``TVM_REGISTER_GLOBAL``.
+   should match the name given to ``TVM_FFI_REGISTER_GLOBAL``.
 
 #. Add entries to the ``DEVICE_TYPE_TO_NAME`` and ``DEVICE_NAME_TO_TYPE`` dictionaries of
    :py:class:`tvm.runtime.Device` for the new enum value.
@@ -225,7 +225,7 @@ the same name as was used in the ``TVM_REGISTER_TARGET_KIND``
 definition above. ::
 
   tvm::runtime::Module GeneratorFooCode(IRModule mod, Target target);
-  TVM_REGISTER_GLOBAL("target.build.foo").set_body_typed(GeneratorFooCode);
+  TVM_FFI_REGISTER_GLOBAL("target.build.foo").set_body_typed(GeneratorFooCode);
 
 The code generator takes two arguments.  The first is the ``IRModule``
 to compile, and the second is the ``Target`` that describes the device