libc/test/integration/startup/gpu/rpc_interface_test.cpp

//===-- Loader test to check the RPC interface with the loader ------------===//
//
// 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/__support/GPU/utils.h"
#include "src/__support/RPC/rpc_client.h"
#include "test/IntegrationTest/test.h"

using namespace LIBC_NAMESPACE;

// Test to ensure that we can use arbitrary combinations of sends and receives
// as long as they are mirrored.
static void test_interface(bool end_with_send) {
  uint64_t cnt = 0;
  LIBC_NAMESPACE::rpc::Client::Port port =
      LIBC_NAMESPACE::rpc::client.open<LIBC_TEST_INTERFACE>();
  port.send([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    buffer->data[0] = end_with_send;
  });
  port.send([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    buffer->data[0] = cnt = cnt + 1;
  });
  port.recv([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    cnt = buffer->data[0];
  });
  port.send([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    buffer->data[0] = cnt = cnt + 1;
  });
  port.recv([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    cnt = buffer->data[0];
  });
  port.send([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    buffer->data[0] = cnt = cnt + 1;
  });
  port.send([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    buffer->data[0] = cnt = cnt + 1;
  });
  port.recv([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    cnt = buffer->data[0];
  });
  port.recv([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
    cnt = buffer->data[0];
  });
  if (end_with_send)
    port.send([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
      buffer->data[0] = cnt = cnt + 1;
    });
  else
    port.recv([&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
      cnt = buffer->data[0];
    });

  ASSERT_TRUE(cnt == 9 && "Invalid number of increments");
}

TEST_MAIN(int, char **, char **) {
  test_interface(true);
  test_interface(false);

  return 0;
}