Primiano Tucci | 4f9b6d7 | 2017-12-05 20:59:16 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "perfetto/base/utils.h" |
| 18 | |
| 19 | #include <fcntl.h> |
| 20 | #include <signal.h> |
| 21 | #include <stdint.h> |
| 22 | #include <unistd.h> |
| 23 | |
| 24 | #include "gtest/gtest.h" |
| 25 | |
| 26 | namespace perfetto { |
| 27 | namespace base { |
| 28 | namespace { |
| 29 | |
| 30 | TEST(Utils, ArraySize) { |
| 31 | char char_arr_1[1]; |
| 32 | char char_arr_4[4]; |
| 33 | EXPECT_EQ(1u, ArraySize(char_arr_1)); |
| 34 | EXPECT_EQ(4u, ArraySize(char_arr_4)); |
| 35 | |
| 36 | int32_t int32_arr_1[1]; |
| 37 | int32_t int32_arr_4[4]; |
| 38 | EXPECT_EQ(1u, ArraySize(int32_arr_1)); |
| 39 | EXPECT_EQ(4u, ArraySize(int32_arr_4)); |
| 40 | |
| 41 | uint64_t int64_arr_1[1]; |
| 42 | uint64_t int64_arr_4[4]; |
| 43 | EXPECT_EQ(1u, ArraySize(int64_arr_1)); |
| 44 | EXPECT_EQ(4u, ArraySize(int64_arr_4)); |
| 45 | |
| 46 | char kString[] = "foo"; |
| 47 | EXPECT_EQ(4u, ArraySize(kString)); |
| 48 | |
| 49 | struct Bar { |
| 50 | int32_t a; |
| 51 | int32_t b; |
| 52 | }; |
| 53 | Bar bar_1[1]; |
| 54 | Bar bar_4[4]; |
| 55 | EXPECT_EQ(1u, ArraySize(bar_1)); |
| 56 | EXPECT_EQ(4u, ArraySize(bar_4)); |
| 57 | } |
| 58 | |
| 59 | int pipe_fd[2]; |
| 60 | |
| 61 | TEST(Utils, EintrWrapper) { |
| 62 | ASSERT_EQ(0, pipe(pipe_fd)); |
| 63 | |
| 64 | struct sigaction sa = {}; |
| 65 | struct sigaction old_sa = {}; |
| 66 | |
| 67 | // Glibc headers for sa_sigaction trigger this. |
| 68 | #pragma GCC diagnostic push |
| 69 | #if defined(__clang__) |
| 70 | #pragma GCC diagnostic ignored "-Wdisabled-macro-expansion" |
| 71 | #endif |
| 72 | sa.sa_sigaction = [](int, siginfo_t*, void*) {}; |
| 73 | #pragma GCC diagnostic pop |
| 74 | |
| 75 | ASSERT_EQ(0, sigaction(SIGUSR2, &sa, &old_sa)); |
| 76 | int parent_pid = getpid(); |
| 77 | pid_t pid = fork(); |
| 78 | ASSERT_NE(-1, pid); |
| 79 | if (pid == 0 /* child */) { |
| 80 | usleep(5000); |
| 81 | kill(parent_pid, SIGUSR2); |
| 82 | ignore_result(write(pipe_fd[1], "foo\0", 4)); |
| 83 | _exit(0); |
| 84 | } |
| 85 | |
| 86 | char buf[6] = {}; |
| 87 | EXPECT_EQ(4, PERFETTO_EINTR(read(pipe_fd[0], buf, sizeof(buf)))); |
| 88 | EXPECT_STREQ("foo", buf); |
| 89 | EXPECT_EQ(0, PERFETTO_EINTR(close(pipe_fd[0]))); |
| 90 | EXPECT_EQ(0, PERFETTO_EINTR(close(pipe_fd[1]))); |
| 91 | |
| 92 | // A 2nd close should fail with the proper errno. |
| 93 | int res = close(pipe_fd[0]); |
| 94 | auto err = errno; |
| 95 | EXPECT_EQ(-1, res); |
| 96 | EXPECT_EQ(EBADF, err); |
| 97 | |
| 98 | // Restore the old handler. |
| 99 | sigaction(SIGUSR2, &old_sa, nullptr); |
| 100 | } |
| 101 | |
| 102 | } // namespace |
| 103 | } // namespace base |
| 104 | } // namespace perfetto |