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 "src/ftrace_reader/test/cpu_reader_support.h"
18
19 #include "perfetto/base/utils.h"
20 #include "src/ftrace_reader/ftrace_procfs.h"
21
22 #include <string.h>
23
24 namespace perfetto {
25 namespace {
26
27 std::map<std::string, std::unique_ptr<ProtoTranslationTable>>* g_tables;
28
29 } // namespace
30
GetTable(const std::string & name)31 ProtoTranslationTable* GetTable(const std::string& name) {
32 if (!g_tables)
33 g_tables =
34 new std::map<std::string, std::unique_ptr<ProtoTranslationTable>>();
35 if (!g_tables->count(name)) {
36 std::string path = "src/ftrace_reader/test/data/" + name + "/";
37 FtraceProcfs ftrace(path);
38 auto table = ProtoTranslationTable::Create(&ftrace, GetStaticEventInfo(),
39 GetStaticCommonFieldsInfo());
40 g_tables->emplace(name, std::move(table));
41 }
42 return g_tables->at(name).get();
43 }
44
PageFromXxd(const std::string & text)45 std::unique_ptr<uint8_t[]> PageFromXxd(const std::string& text) {
46 auto buffer = std::unique_ptr<uint8_t[]>(new uint8_t[base::kPageSize]);
47 const char* ptr = text.data();
48 memset(buffer.get(), 0xfa, base::kPageSize);
49 uint8_t* out = buffer.get();
50 while (*ptr != '\0') {
51 if (*(ptr++) != ':')
52 continue;
53 for (int i = 0; i < 8; i++) {
54 PERFETTO_CHECK(text.size() >=
55 static_cast<size_t>((ptr - text.data()) + 5));
56 PERFETTO_CHECK(*(ptr++) == ' ');
57 int n = sscanf(ptr, "%02hhx%02hhx", out, out + 1);
58 PERFETTO_CHECK(n == 2);
59 out += n;
60 ptr += 4;
61 }
62 while (*ptr != '\n')
63 ptr++;
64 }
65 return buffer;
66 }
67
68 } // namespace perfetto
69