Robert Oliver | 81e6e3e | 2020-06-25 14:43:40 -0400 | [diff] [blame] | 1 | // Copyright 2020 The Pigweed Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 4 | // use this file except in compliance with the License. You may obtain a copy of |
| 5 | // the License at |
| 6 | // |
| 7 | // https://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 11 | // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 12 | // License for the specific language governing permissions and limitations under |
| 13 | // the License. |
| 14 | |
| 15 | #define PW_TRACE_MODULE_NAME "TST" |
| 16 | |
| 17 | #include "pw_trace_tokenized/trace_buffer.h" |
| 18 | |
| 19 | #include "gtest/gtest.h" |
| 20 | #include "pw_trace/trace.h" |
| 21 | |
| 22 | TEST(TokenizedTrace, Simple) { |
| 23 | PW_TRACE_SET_ENABLED(true); |
| 24 | pw::trace::ClearBuffer(); |
| 25 | |
| 26 | PW_TRACE_INSTANT("Test"); |
| 27 | |
| 28 | // Check results |
| 29 | pw::ring_buffer::PrefixedEntryRingBuffer* buf = pw::trace::GetBuffer(); |
| 30 | |
| 31 | EXPECT_EQ(buf->EntryCount(), 1u); |
| 32 | const size_t expected_min_bytes_used = |
| 33 | 1 /*varint size */ + 4 /*token*/ + 1 /* min varint time */; |
| 34 | const size_t expected_max_bytes_used = 1 /*varint size */ + 4 /*token*/ + |
| 35 | sizeof(PW_TRACE_TIME_TYPE) + |
| 36 | 1 /* max varint time */; |
| 37 | |
| 38 | EXPECT_GE(buf->TotalUsedBytes(), expected_min_bytes_used); |
| 39 | EXPECT_LE(buf->TotalUsedBytes(), expected_max_bytes_used); |
| 40 | } |
| 41 | |
| 42 | TEST(TokenizedTrace, TraceId) { |
| 43 | PW_TRACE_SET_ENABLED(true); |
| 44 | pw::trace::ClearBuffer(); |
| 45 | |
| 46 | uint32_t trace_id = 256; |
| 47 | PW_TRACE_INSTANT("Test", "group", trace_id); |
| 48 | |
| 49 | // Check results |
| 50 | pw::ring_buffer::PrefixedEntryRingBuffer* buf = pw::trace::GetBuffer(); |
| 51 | |
| 52 | EXPECT_EQ(buf->EntryCount(), 1u); |
| 53 | const size_t expected_min_bytes_used = 1 /*varint size */ + 4 /*token*/ + |
| 54 | 1 /* min varint time */ + |
| 55 | 2 /*varint trace id*/; |
| 56 | const size_t expected_max_bytes_used = |
| 57 | 1 /*varint size */ + 4 /*token*/ + sizeof(PW_TRACE_TIME_TYPE) + |
| 58 | 1 /* max varint time */ + 2 /*varint trace id*/; |
| 59 | |
| 60 | EXPECT_GE(buf->TotalUsedBytes(), expected_min_bytes_used); |
| 61 | EXPECT_LE(buf->TotalUsedBytes(), expected_max_bytes_used); |
| 62 | } |
| 63 | |
| 64 | TEST(TokenizedTrace, Data) { |
| 65 | PW_TRACE_SET_ENABLED(true); |
| 66 | pw::trace::ClearBuffer(); |
| 67 | |
| 68 | char data[] = "some test data"; |
| 69 | PW_TRACE_INSTANT_DATA("Test", "test_data", data, sizeof(data)); |
| 70 | |
| 71 | // Check results |
| 72 | pw::ring_buffer::PrefixedEntryRingBuffer* buf = pw::trace::GetBuffer(); |
| 73 | |
| 74 | EXPECT_EQ(buf->EntryCount(), 1u); |
| 75 | const size_t expected_min_bytes_used = |
| 76 | 1 /*varint size */ + 4 /*token*/ + 1 /* min varint time */ + sizeof(data); |
| 77 | const size_t expected_max_bytes_used = 1 /*varint size */ + 4 /*token*/ + |
| 78 | sizeof(PW_TRACE_TIME_TYPE) + |
| 79 | 1 /* max varint time */ + sizeof(data); |
| 80 | |
| 81 | EXPECT_GE(buf->TotalUsedBytes(), expected_min_bytes_used); |
| 82 | EXPECT_LE(buf->TotalUsedBytes(), expected_max_bytes_used); |
| 83 | |
| 84 | std::byte value[expected_max_bytes_used]; |
| 85 | size_t bytes_read = 0; |
| 86 | EXPECT_EQ(buf->PeekFront(std::span<std::byte>(value), &bytes_read), |
Wyatt Hepler | 1b3da3a | 2021-01-07 13:26:57 -0800 | [diff] [blame] | 87 | pw::OkStatus()); |
Robert Oliver | 81e6e3e | 2020-06-25 14:43:40 -0400 | [diff] [blame] | 88 | |
| 89 | // read size is minus 1, since doesn't include varint size |
| 90 | EXPECT_GE(bytes_read, expected_min_bytes_used - 1); |
| 91 | EXPECT_LE(bytes_read, expected_max_bytes_used - 1); |
| 92 | EXPECT_STREQ(data, |
| 93 | reinterpret_cast<char*>(&value[bytes_read - sizeof(data)])); |
| 94 | } |
| 95 | |
| 96 | TEST(TokenizedTrace, Clear) { |
| 97 | PW_TRACE_SET_ENABLED(true); |
| 98 | pw::trace::ClearBuffer(); |
| 99 | pw::ring_buffer::PrefixedEntryRingBuffer* buf = pw::trace::GetBuffer(); |
| 100 | |
| 101 | PW_TRACE_INSTANT("Test"); |
| 102 | EXPECT_EQ(buf->EntryCount(), 1u); |
| 103 | pw::trace::ClearBuffer(); |
| 104 | EXPECT_EQ(buf->EntryCount(), 0u); |
| 105 | } |
| 106 | |
| 107 | TEST(TokenizedTrace, Overflow) { |
| 108 | PW_TRACE_SET_ENABLED(true); |
| 109 | pw::trace::ClearBuffer(); |
| 110 | pw::ring_buffer::PrefixedEntryRingBuffer* buf = pw::trace::GetBuffer(); |
| 111 | |
| 112 | // Add samples until entry count stops increasing. |
| 113 | uint32_t last_entry_count = 0; |
| 114 | size_t count = 0; |
| 115 | while (buf->EntryCount() == 0 || buf->EntryCount() > last_entry_count) { |
| 116 | last_entry_count = buf->EntryCount(); |
| 117 | PW_TRACE_INSTANT_DATA("Test", "count", &count, sizeof(count)); |
| 118 | count++; |
| 119 | } |
| 120 | // CHECK |
| 121 | size_t expected_count = 1; // skip first (since it was lost) |
| 122 | while (buf->EntryCount() > 0) { |
| 123 | std::byte value[PW_TRACE_BUFFER_MAX_BLOCK_SIZE_BYTES]; |
| 124 | size_t bytes_read = 0; |
| 125 | EXPECT_EQ(buf->PeekFront(std::span<std::byte>(value), &bytes_read), |
Wyatt Hepler | 1b3da3a | 2021-01-07 13:26:57 -0800 | [diff] [blame] | 126 | pw::OkStatus()); |
| 127 | EXPECT_EQ(buf->PopFront(), pw::OkStatus()); |
Robert Oliver | 81e6e3e | 2020-06-25 14:43:40 -0400 | [diff] [blame] | 128 | EXPECT_EQ(*reinterpret_cast<size_t*>(&value[bytes_read - sizeof(size_t)]), |
| 129 | expected_count); |
| 130 | expected_count++; |
| 131 | } |
| 132 | |
| 133 | EXPECT_EQ(count, expected_count); |
| 134 | } |
| 135 | |
| 136 | TEST(TokenizedTrace, BlockTooLarge) { |
| 137 | PW_TRACE_SET_ENABLED(true); |
| 138 | pw::trace::ClearBuffer(); |
| 139 | pw::ring_buffer::PrefixedEntryRingBuffer* buf = pw::trace::GetBuffer(); |
| 140 | uint8_t data[PW_TRACE_BUFFER_MAX_BLOCK_SIZE_BYTES]; |
| 141 | PW_TRACE_INSTANT_DATA("Test", "data", data, sizeof(data)); |
| 142 | EXPECT_EQ(buf->EntryCount(), 0u); |
| 143 | } |