1 /*
2 * Copyright (C) 2016 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 /*
18 * End-to-end test to ensure that mapping of vsoc regions works on the host.
19 */
20
21 #include <gtest/gtest.h>
22 #include "common/vsoc/lib/e2e_test_region_view.h"
23 #include "host/libs/config/cuttlefish_config.h"
24
25 // Here is a summary of the two regions interrupt and write test:
26 // 1. Write our strings to the first region
27 // 2. Ensure that our peer hasn't signalled the second region. That would
28 // indicate that it didn't wait for our interrupt.
29 // 3. Send the interrupt on the first region
30 // 4. Wait for our peer's interrupt on the first region
31 // 5. Confirm that we can see our peer's writes in the first region
32 // 6. Initialize our strings in the second region
33 // 7. Send an interrupt on the second region to our peer
34 // 8. Wait for our peer's interrupt on the second region
35 // 9. Confirm that we can see our peer's writes in the second region
36 // 10. Repeat the process for signaling.
37 // 11. Confirm that no interrupt is pending in the first region
38 // 12. Confirm that no interrupt is pending in the second region
39
40 template <typename View>
SetHostStrings(View * in)41 void SetHostStrings(View* in) {
42 size_t num_data = in->string_size();
43 EXPECT_LE(static_cast<size_t>(2), num_data);
44 for (size_t i = 0; i < num_data; ++i) {
45 EXPECT_TRUE(!in->host_string(i)[0] ||
46 !strcmp(in->host_string(i), View::Layout::host_pattern));
47 in->set_host_string(i, View::Layout::host_pattern);
48 EXPECT_STREQ(in->host_string(i), View::Layout::host_pattern);
49 }
50 }
51
52 template <typename View>
CheckPeerStrings(View * in)53 void CheckPeerStrings(View* in) {
54 size_t num_data = in->string_size();
55 EXPECT_LE(static_cast<size_t>(2), num_data);
56 for (size_t i = 0; i < num_data; ++i) {
57 EXPECT_STREQ(View::Layout::guest_pattern, in->guest_string(i));
58 }
59 }
60
TEST(RegionTest,PeerTests)61 TEST(RegionTest, PeerTests) {
62 auto primary =
63 vsoc::E2EPrimaryRegionView::GetInstance(vsoc::GetDomain().c_str());
64 ASSERT_TRUE(!!primary);
65 auto secondary =
66 vsoc::E2ESecondaryRegionView::GetInstance(vsoc::GetDomain().c_str());
67 ASSERT_TRUE(!!secondary);
68 LOG(INFO) << "Regions are open";
69 SetHostStrings(primary);
70 EXPECT_FALSE(secondary->HasIncomingInterrupt());
71 EXPECT_TRUE(primary->MaybeInterruptPeer());
72 LOG(INFO) << "Waiting for first interrupt from peer";
73 primary->WaitForInterrupt();
74 LOG(INFO) << "First interrupt received";
75 CheckPeerStrings(primary);
76 SetHostStrings(secondary);
77 EXPECT_TRUE(secondary->MaybeInterruptPeer());
78 LOG(INFO) << "Waiting for second interrupt from peer";
79 secondary->WaitForInterrupt();
80 LOG(INFO) << "Second interrupt received";
81 CheckPeerStrings(secondary);
82
83 // Test signals
84 EXPECT_FALSE(secondary->HasIncomingInterrupt());
85 LOG(INFO) << "Verified no early second signal";
86 primary->SendSignal(vsoc::layout::Sides::Peer,
87 &primary->data()->host_to_guest_signal);
88 LOG(INFO) << "Signal sent. Waiting for first signal from peer";
89 primary->WaitForInterrupt();
90 int count = 0; // counts the number of signals received.
91 primary->ProcessSignalsFromPeer(
92 [&primary, &count](uint32_t offset) {
93 ++count;
94 EXPECT_EQ(primary->guest_to_host_signal_offset(), offset);
95 });
96 EXPECT_EQ(1, count);
97 LOG(INFO) << "Signal received on primary region";
98 secondary->SendSignal(vsoc::layout::Sides::Peer,
99 &secondary->data()->host_to_guest_signal);
100 LOG(INFO) << "Signal sent. Waiting for second signal from peer";
101 secondary->WaitForInterrupt();
102 count = 0;
103 secondary->ProcessSignalsFromPeer(
104 [secondary, &count](uint32_t offset) {
105 ++count;
106 EXPECT_EQ(secondary->guest_to_host_signal_offset(), offset);
107 });
108 EXPECT_EQ(1, count);
109 LOG(INFO) << "Signal received on secondary region";
110
111 EXPECT_FALSE(primary->HasIncomingInterrupt());
112 EXPECT_FALSE(secondary->HasIncomingInterrupt());
113 }
114
TEST(RegionTest,MissingRegionCausesDeath)115 TEST(RegionTest, MissingRegionCausesDeath) {
116 EXPECT_DEATH(
117 vsoc::E2EUnfindableRegionView::GetInstance(vsoc::GetDomain().c_str()),
118 ".*");
119 }
120
main(int argc,char ** argv)121 int main(int argc, char** argv) {
122 testing::InitGoogleTest(&argc, argv);
123 int rval = RUN_ALL_TESTS();
124 if (!rval) {
125 auto region =
126 vsoc::E2EPrimaryRegionView::GetInstance(vsoc::GetDomain().c_str());
127 region->host_status(vsoc::layout::e2e_test::E2E_MEMORY_FILLED);
128 }
129 return rval;
130 }
131