1//===-- Loader test to check the RPC interface with the loader ------------===//
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 "include/llvm-libc-types/test_rpc_opcodes_t.h"
10#include "src/__support/GPU/utils.h"
11#include "src/__support/RPC/rpc_client.h"
12#include "test/IntegrationTest/test.h"
13
14using namespace LIBC_NAMESPACE;
15
16static void test_add_simple() {
17 uint64_t num_additions =
18 10 + 10 * gpu::get_thread_id() + 10 * gpu::get_block_id();
19 uint64_t cnt = 0;
20 for (uint32_t i = 0; i < num_additions; ++i) {
21 LIBC_NAMESPACE::rpc::Client::Port port =
22 LIBC_NAMESPACE::rpc::client.open<RPC_TEST_INCREMENT>();
23 port.send_and_recv(
24 [=](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
25 reinterpret_cast<uint64_t *>(buffer->data)[0] = cnt;
26 },
27 [&](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
28 cnt = reinterpret_cast<uint64_t *>(buffer->data)[0];
29 });
30 port.close();
31 }
32 ASSERT_TRUE(cnt == num_additions && "Incorrect sum");
33}
34
35// Test to ensure that the RPC mechanism doesn't hang on divergence.
36static void test_noop(uint8_t data) {
37 LIBC_NAMESPACE::rpc::Client::Port port =
38 LIBC_NAMESPACE::rpc::client.open<LIBC_NOOP>();
39 port.send([=](LIBC_NAMESPACE::rpc::Buffer *buffer, uint32_t) {
40 buffer->data[0] = data;
41 });
42 port.close();
43}
44
45TEST_MAIN(int argc, char **argv, char **envp) {
46 test_add_simple();
47
48 if (gpu::get_thread_id() % 2)
49 test_noop(data: 1);
50 else
51 test_noop(data: 2);
52
53 return 0;
54}
55

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source code of libc/test/integration/startup/gpu/rpc_test.cpp