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

   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
  14 using namespace LIBC_NAMESPACE;
  15
  16 static void test_add_simple() {
  17   uint32_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     rpc::Client::Port port = rpc::client.open<RPC_TEST_INCREMENT>();
  22     port.send_and_recv(
  23         [=](rpc::Buffer *buffer) {
  24           reinterpret_cast<uint64_t *>(buffer->data)[0] = cnt;
  25         },
  26         [&](rpc::Buffer *buffer) {
  27           cnt = reinterpret_cast<uint64_t *>(buffer->data)[0];
  28         });
  29     port.close();
  30   }
  31   ASSERT_TRUE(cnt == num_additions && "Incorrect sum");
  32 }
  33
  34 // Test to ensure that the RPC mechanism doesn't hang on divergence.
  35 static void test_noop(uint8_t data) {
  36   rpc::Client::Port port = rpc::client.open<RPC_NOOP>();
  37   port.send([=](rpc::Buffer *buffer) { buffer->data[0] = data; });
  38   port.close();
  39 }
  40
  41 TEST_MAIN(int argc, char **argv, char **envp) {
  42   test_add_simple();
  43
  44   if (gpu::get_thread_id() % 2)
  45     test_noop(1);
  46   else
  47     test_noop(2);
  48
  49   return 0;
  50 }