[libc-commits] [libc] [libc] Export the RPC interface from `libc` (PR #71432)

[Joseph Huber via libc-commits]

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@@ -0,0 +1,25 @@
+//===---------- GPU implementation of the external RPC port interface -----===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/gpu/rpc_close_port.h"
+
+#include "src/__support/GPU/utils.h"
+#include "src/__support/RPC/rpc_client.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+static_assert(sizeof(rpc_port_t) == sizeof(rpc::Client::Port), "ABI mismatch");
+
+LLVM_LIBC_FUNCTION(void, rpc_close_port, (rpc_port_t * handle)) {
+  rpc::Client::Port port = cpp::bit_cast<rpc::Client::Port>(*handle);
+  port.close();
+  *handle = cpp::bit_cast<rpc_port_t>(port);
----------------
jhuber6 wrote:

It's the same restriction the C++ interface has, we just require that it be closed by the user. I remember toying around with destructors but it was just too much overhead and pain for what we should just require as a part of using it.

https://github.com/llvm/llvm-project/pull/71432