| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "perfetto/base/utils.h" |
| |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <stdint.h> |
| #include <unistd.h> |
| |
| #include "gtest/gtest.h" |
| |
| namespace perfetto { |
| namespace base { |
| namespace { |
| |
| TEST(Utils, ArraySize) { |
| char char_arr_1[1]; |
| char char_arr_4[4]; |
| EXPECT_EQ(1u, ArraySize(char_arr_1)); |
| EXPECT_EQ(4u, ArraySize(char_arr_4)); |
| |
| int32_t int32_arr_1[1]; |
| int32_t int32_arr_4[4]; |
| EXPECT_EQ(1u, ArraySize(int32_arr_1)); |
| EXPECT_EQ(4u, ArraySize(int32_arr_4)); |
| |
| uint64_t int64_arr_1[1]; |
| uint64_t int64_arr_4[4]; |
| EXPECT_EQ(1u, ArraySize(int64_arr_1)); |
| EXPECT_EQ(4u, ArraySize(int64_arr_4)); |
| |
| char kString[] = "foo"; |
| EXPECT_EQ(4u, ArraySize(kString)); |
| |
| struct Bar { |
| int32_t a; |
| int32_t b; |
| }; |
| Bar bar_1[1]; |
| Bar bar_4[4]; |
| EXPECT_EQ(1u, ArraySize(bar_1)); |
| EXPECT_EQ(4u, ArraySize(bar_4)); |
| } |
| |
| int pipe_fd[2]; |
| |
| TEST(Utils, EintrWrapper) { |
| ASSERT_EQ(0, pipe(pipe_fd)); |
| |
| struct sigaction sa = {}; |
| struct sigaction old_sa = {}; |
| |
| // Glibc headers for sa_sigaction trigger this. |
| #pragma GCC diagnostic push |
| #if defined(__clang__) |
| #pragma GCC diagnostic ignored "-Wdisabled-macro-expansion" |
| #endif |
| sa.sa_sigaction = [](int, siginfo_t*, void*) {}; |
| #pragma GCC diagnostic pop |
| |
| ASSERT_EQ(0, sigaction(SIGUSR2, &sa, &old_sa)); |
| int parent_pid = getpid(); |
| pid_t pid = fork(); |
| ASSERT_NE(-1, pid); |
| if (pid == 0 /* child */) { |
| usleep(5000); |
| kill(parent_pid, SIGUSR2); |
| ignore_result(write(pipe_fd[1], "foo\0", 4)); |
| _exit(0); |
| } |
| |
| char buf[6] = {}; |
| EXPECT_EQ(4, PERFETTO_EINTR(read(pipe_fd[0], buf, sizeof(buf)))); |
| EXPECT_STREQ("foo", buf); |
| EXPECT_EQ(0, PERFETTO_EINTR(close(pipe_fd[0]))); |
| EXPECT_EQ(0, PERFETTO_EINTR(close(pipe_fd[1]))); |
| |
| // A 2nd close should fail with the proper errno. |
| int res = close(pipe_fd[0]); |
| auto err = errno; |
| EXPECT_EQ(-1, res); |
| EXPECT_EQ(EBADF, err); |
| |
| // Restore the old handler. |
| sigaction(SIGUSR2, &old_sa, nullptr); |
| } |
| |
| } // namespace |
| } // namespace base |
| } // namespace perfetto |