libc/src/stdio/gpu/ftell.cpp

   1 //===-- GPU implementation of ftell ---------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/stdio/ftell.h"
  10 #include "file.h"
  11
  12 #include <stdio.h>
  13
  14 namespace LIBC_NAMESPACE {
  15
  16 LLVM_LIBC_FUNCTION(long, ftell, (::FILE * stream)) {
  17   long ret;
  18   rpc::Client::Port port = rpc::client.open<RPC_FSEEK>();
  19   port.send_and_recv(
  20       [=](rpc::Buffer *buffer) { buffer->data[0] = file::from_stream(stream); },
  21       [&](rpc::Buffer *buffer) { ret = static_cast<long>(buffer->data[0]); });
  22   port.close();
  23   return ret;
  24 }
  25
  26 } // namespace LIBC_NAMESPACE