1 /*
2 * Copyright (C) 2018 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 <gtest/gtest.h>
18
19 #include "membarrier.h"
20
21 class ScopedErrnoCleaner {
22 public:
ScopedErrnoCleaner()23 ScopedErrnoCleaner() { errno = 0; }
~ScopedErrnoCleaner()24 ~ScopedErrnoCleaner() { errno = 0; }
25 };
26
HasMembarrier(art::MembarrierCommand cmd)27 bool HasMembarrier(art::MembarrierCommand cmd) {
28 ScopedErrnoCleaner errno_cleaner;
29 int supported_cmds = art::membarrier(art::MembarrierCommand::kQuery);
30 return (supported_cmds > 0) && ((supported_cmds & static_cast<int>(cmd)) != 0);
31 }
32
TEST(membarrier,query)33 TEST(membarrier, query) {
34 ScopedErrnoCleaner errno_cleaner;
35 int supported = art::membarrier(art::MembarrierCommand::kQuery);
36 if (errno == 0) {
37 ASSERT_LE(0, supported);
38 } else {
39 ASSERT_TRUE(errno == ENOSYS && supported == -1);
40 }
41 }
42
TEST(membarrier,global_barrier)43 TEST(membarrier, global_barrier) {
44 if (!HasMembarrier(art::MembarrierCommand::kGlobal)) {
45 GTEST_LOG_(INFO) << "MembarrierCommand::kGlobal not supported, skipping test.";
46 return;
47 }
48 ASSERT_EQ(0, art::membarrier(art::MembarrierCommand::kGlobal));
49 }
50
MembarrierCommandToName(art::MembarrierCommand cmd)51 static const char* MembarrierCommandToName(art::MembarrierCommand cmd) {
52 #define CASE_VALUE(x) case (x): return #x;
53 switch (cmd) {
54 CASE_VALUE(art::MembarrierCommand::kQuery);
55 CASE_VALUE(art::MembarrierCommand::kGlobal);
56 CASE_VALUE(art::MembarrierCommand::kGlobalExpedited);
57 CASE_VALUE(art::MembarrierCommand::kRegisterGlobalExpedited);
58 CASE_VALUE(art::MembarrierCommand::kPrivateExpedited);
59 CASE_VALUE(art::MembarrierCommand::kRegisterPrivateExpedited);
60 CASE_VALUE(art::MembarrierCommand::kPrivateExpeditedSyncCore);
61 CASE_VALUE(art::MembarrierCommand::kRegisterPrivateExpeditedSyncCore);
62 }
63 }
64
TestRegisterAndBarrierCommands(art::MembarrierCommand membarrier_cmd_register,art::MembarrierCommand membarrier_cmd_barrier)65 static void TestRegisterAndBarrierCommands(art::MembarrierCommand membarrier_cmd_register,
66 art::MembarrierCommand membarrier_cmd_barrier) {
67 if (!HasMembarrier(membarrier_cmd_register)) {
68 GTEST_LOG_(INFO) << MembarrierCommandToName(membarrier_cmd_register)
69 << " not supported, skipping test.";
70 return;
71 }
72 if (!HasMembarrier(membarrier_cmd_barrier)) {
73 GTEST_LOG_(INFO) << MembarrierCommandToName(membarrier_cmd_barrier)
74 << " not supported, skipping test.";
75 return;
76 }
77
78 ScopedErrnoCleaner errno_cleaner;
79
80 // Check barrier use without prior registration.
81 if (membarrier_cmd_register == art::MembarrierCommand::kRegisterGlobalExpedited) {
82 // Global barrier use is always okay.
83 ASSERT_EQ(0, art::membarrier(membarrier_cmd_barrier));
84 } else {
85 // Private barrier should fail.
86 ASSERT_EQ(-1, art::membarrier(membarrier_cmd_barrier));
87 ASSERT_EQ(EPERM, errno);
88 errno = 0;
89 }
90
91 // Check registration for barrier succeeds.
92 ASSERT_EQ(0, art::membarrier(membarrier_cmd_register));
93
94 // Check barrier use after registration succeeds.
95 ASSERT_EQ(0, art::membarrier(membarrier_cmd_barrier));
96 }
97
TEST(membarrier,global_expedited)98 TEST(membarrier, global_expedited) {
99 TestRegisterAndBarrierCommands(art::MembarrierCommand::kRegisterGlobalExpedited,
100 art::MembarrierCommand::kGlobalExpedited);
101 }
102
TEST(membarrier,private_expedited)103 TEST(membarrier, private_expedited) {
104 TestRegisterAndBarrierCommands(art::MembarrierCommand::kRegisterPrivateExpedited,
105 art::MembarrierCommand::kPrivateExpedited);
106 }
107
TEST(membarrier,private_expedited_sync_core)108 TEST(membarrier, private_expedited_sync_core) {
109 TestRegisterAndBarrierCommands(art::MembarrierCommand::kRegisterPrivateExpeditedSyncCore,
110 art::MembarrierCommand::kPrivateExpeditedSyncCore);
111 }
112