1 /*
2 * Copyright (C) 2015 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 "command.h"
18
19 #include <algorithm>
20 #include <map>
21 #include <string>
22 #include <vector>
23
24 #include <android-base/logging.h>
25
26 #include "utils.h"
27
NextArgumentOrError(const std::vector<std::string> & args,size_t * pi)28 bool Command::NextArgumentOrError(const std::vector<std::string>& args, size_t* pi) {
29 if (*pi + 1 == args.size()) {
30 LOG(ERROR) << "No argument following " << args[*pi] << " option. Try `simpleperf help " << name_
31 << "`";
32 return false;
33 }
34 ++*pi;
35 return true;
36 }
37
ReportUnknownOption(const std::vector<std::string> & args,size_t i)38 void Command::ReportUnknownOption(const std::vector<std::string>& args, size_t i) {
39 LOG(ERROR) << "Unknown option for " << name_ << " command: '" << args[i]
40 << "'. Try `simpleperf help " << name_ << "`";
41 }
42
43 typedef std::function<std::unique_ptr<Command>(void)> callback_t;
44
CommandMap()45 static std::map<std::string, callback_t>& CommandMap() {
46 // commands is used in the constructor of Command. Defining it as a static
47 // variable in a function makes sure it is initialized before use.
48 static std::map<std::string, callback_t> command_map;
49 return command_map;
50 }
51
RegisterCommand(const std::string & cmd_name,const std::function<std::unique_ptr<Command> (void)> & callback)52 void RegisterCommand(const std::string& cmd_name,
53 const std::function<std::unique_ptr<Command>(void)>& callback) {
54 CommandMap().insert(std::make_pair(cmd_name, callback));
55 }
56
UnRegisterCommand(const std::string & cmd_name)57 void UnRegisterCommand(const std::string& cmd_name) {
58 CommandMap().erase(cmd_name);
59 }
60
CreateCommandInstance(const std::string & cmd_name)61 std::unique_ptr<Command> CreateCommandInstance(const std::string& cmd_name) {
62 auto it = CommandMap().find(cmd_name);
63 return (it == CommandMap().end()) ? nullptr : (it->second)();
64 }
65
GetAllCommandNames()66 const std::vector<std::string> GetAllCommandNames() {
67 std::vector<std::string> names;
68 for (auto pair : CommandMap()) {
69 names.push_back(pair.first);
70 }
71 return names;
72 }
73
74 extern void RegisterDumpRecordCommand();
75 extern void RegisterHelpCommand();
76 extern void RegisterListCommand();
77 extern void RegisterKmemCommand();
78 extern void RegisterRecordCommand();
79 extern void RegisterReportCommand();
80 extern void RegisterReportSampleCommand();
81 extern void RegisterStatCommand();
82
83 class CommandRegister {
84 public:
CommandRegister()85 CommandRegister() {
86 RegisterDumpRecordCommand();
87 RegisterHelpCommand();
88 RegisterKmemCommand();
89 RegisterReportCommand();
90 RegisterReportSampleCommand();
91 #if defined(__linux__)
92 RegisterListCommand();
93 RegisterRecordCommand();
94 RegisterStatCommand();
95 #endif
96 }
97 };
98
99 CommandRegister command_register;
100
RunSimpleperfCmd(int argc,char ** argv)101 bool RunSimpleperfCmd(int argc, char** argv) {
102 android::base::InitLogging(argv, android::base::StderrLogger);
103 std::vector<std::string> args;
104 android::base::LogSeverity log_severity = android::base::INFO;
105
106 for (int i = 1; i < argc; ++i) {
107 if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0) {
108 args.insert(args.begin(), "help");
109 } else if (strcmp(argv[i], "--log") == 0) {
110 if (i + 1 < argc) {
111 ++i;
112 if (!GetLogSeverity(argv[i], &log_severity)) {
113 LOG(ERROR) << "Unknown log severity: " << argv[i];
114 return false;
115 }
116 } else {
117 LOG(ERROR) << "Missing argument for --log option.\n";
118 return false;
119 }
120 } else if (strcmp(argv[i], "--version") == 0) {
121 LOG(INFO) << "Simpleperf version " << GetSimpleperfVersion();
122 return true;
123 } else {
124 args.push_back(argv[i]);
125 }
126 }
127 android::base::ScopedLogSeverity severity(log_severity);
128
129 if (args.empty()) {
130 args.push_back("help");
131 }
132 std::unique_ptr<Command> command = CreateCommandInstance(args[0]);
133 if (command == nullptr) {
134 LOG(ERROR) << "malformed command line: unknown command " << args[0];
135 return false;
136 }
137 std::string command_name = args[0];
138 args.erase(args.begin());
139
140 LOG(DEBUG) << "command '" << command_name << "' starts running";
141 bool result = command->Run(args);
142 LOG(DEBUG) << "command '" << command_name << "' "
143 << (result ? "finished successfully" : "failed");
144 return result;
145 }
146