1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <map>
#include <string>
#include <vector>
#include <android-base/logging.h>
#include "command.h"
#include "environment.h"
#include "event_attr.h"
#include "event_fd.h"
#include "event_type.h"
static void PrintEventTypesOfType(uint32_t type, const std::string& type_name,
const std::vector<EventType>& event_types) {
printf("List of %s:\n", type_name.c_str());
for (auto& event_type : event_types) {
if (event_type.type == type) {
perf_event_attr attr = CreateDefaultPerfEventAttr(event_type);
// Exclude kernel to list supported events even when
// /proc/sys/kernel/perf_event_paranoid is 2.
attr.exclude_kernel = 1;
if (IsEventAttrSupportedByKernel(attr)) {
printf(" %s\n", event_type.name.c_str());
}
}
}
printf("\n");
}
class ListCommand : public Command {
public:
ListCommand()
: Command("list", "list available event types",
"Usage: simpleperf list [hw|sw|cache|tracepoint]\n"
" List all available perf events on this machine.\n") {
}
bool Run(const std::vector<std::string>& args) override;
};
bool ListCommand::Run(const std::vector<std::string>& args) {
if (!CheckPerfEventLimit()) {
return false;
}
static std::map<std::string, std::pair<int, std::string>> type_map = {
{"hw", {PERF_TYPE_HARDWARE, "hardware events"}},
{"sw", {PERF_TYPE_SOFTWARE, "software events"}},
{"cache", {PERF_TYPE_HW_CACHE, "hw-cache events"}},
{"tracepoint", {PERF_TYPE_TRACEPOINT, "tracepoint events"}},
};
std::vector<std::string> names;
if (args.empty()) {
for (auto& item : type_map) {
names.push_back(item.first);
}
} else {
for (auto& arg : args) {
if (type_map.find(arg) != type_map.end()) {
names.push_back(arg);
} else {
LOG(ERROR) << "unknown event type category: " << arg << ", try using \"help list\"";
return false;
}
}
}
auto& event_types = GetAllEventTypes();
for (auto& name : names) {
auto it = type_map.find(name);
PrintEventTypesOfType(it->second.first, it->second.second, event_types);
}
return true;
}
void RegisterListCommand() {
RegisterCommand("list", [] { return std::unique_ptr<Command>(new ListCommand); });
}
|
