mirror of
https://github.com/SerenityOS/serenity
synced 2024-09-16 06:30:41 +00:00
131 lines
4 KiB
C++
131 lines
4 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibCore/ArgsParser.h>
|
|
#include <serenity.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
Core::ArgsParser args_parser;
|
|
|
|
const char* pid_argument = nullptr;
|
|
const char* cmd_argument = nullptr;
|
|
bool wait = false;
|
|
bool free = false;
|
|
bool enable = false;
|
|
bool disable = false;
|
|
bool all_processes = false;
|
|
u64 event_mask = PERF_EVENT_MMAP | PERF_EVENT_MUNMAP | PERF_EVENT_PROCESS_CREATE
|
|
| PERF_EVENT_PROCESS_EXEC | PERF_EVENT_PROCESS_EXIT | PERF_EVENT_THREAD_CREATE | PERF_EVENT_THREAD_EXIT;
|
|
bool seen_event_type_arg = false;
|
|
|
|
args_parser.add_option(pid_argument, "Target PID", nullptr, 'p', "PID");
|
|
args_parser.add_option(all_processes, "Profile all processes (super-user only)", nullptr, 'a');
|
|
args_parser.add_option(enable, "Enable", nullptr, 'e');
|
|
args_parser.add_option(disable, "Disable", nullptr, 'd');
|
|
args_parser.add_option(free, "Free the profiling buffer for the associated process(es).", nullptr, 'f');
|
|
args_parser.add_option(wait, "Enable profiling and wait for user input to disable.", nullptr, 'w');
|
|
args_parser.add_option(cmd_argument, "Command", nullptr, 'c', "command");
|
|
args_parser.add_option(Core::ArgsParser::Option {
|
|
true, "Enable tracking specific event type", nullptr, 't', "event_type",
|
|
[&](String event_type) {
|
|
seen_event_type_arg = true;
|
|
if (event_type == "sample")
|
|
event_mask |= PERF_EVENT_SAMPLE;
|
|
else if (event_type == "context_switch")
|
|
event_mask |= PERF_EVENT_CONTEXT_SWITCH;
|
|
else if (event_type == "kmalloc")
|
|
event_mask |= PERF_EVENT_KMALLOC;
|
|
else if (event_type == "kfree")
|
|
event_mask |= PERF_EVENT_KFREE;
|
|
else if (event_type == "page_fault")
|
|
event_mask |= PERF_EVENT_PAGE_FAULT;
|
|
else {
|
|
warnln("Unknown event type '{}' specified.", event_type);
|
|
exit(1);
|
|
}
|
|
return true;
|
|
} });
|
|
|
|
auto print_types = [] {
|
|
outln();
|
|
outln("Event type can be one of: sample, context_switch, page_fault, kmalloc and kfree.");
|
|
};
|
|
|
|
if (!args_parser.parse(argc, argv, Core::ArgsParser::FailureBehavior::PrintUsage)) {
|
|
print_types();
|
|
exit(1);
|
|
}
|
|
|
|
if (!pid_argument && !cmd_argument && !all_processes) {
|
|
args_parser.print_usage(stdout, argv[0]);
|
|
print_types();
|
|
return 0;
|
|
}
|
|
|
|
if (!seen_event_type_arg)
|
|
event_mask |= PERF_EVENT_SAMPLE;
|
|
|
|
if (pid_argument || all_processes) {
|
|
if (!(enable ^ disable ^ wait ^ free)) {
|
|
warnln("-p <PID> requires -e xor -d xor -w xor -f.");
|
|
return 1;
|
|
}
|
|
|
|
pid_t pid = all_processes ? -1 : atoi(pid_argument);
|
|
|
|
if (wait || enable) {
|
|
if (profiling_enable(pid, event_mask) < 0) {
|
|
perror("profiling_enable");
|
|
return 1;
|
|
}
|
|
|
|
if (!wait)
|
|
return 0;
|
|
}
|
|
|
|
if (wait) {
|
|
outln("Profiling enabled, waiting for user input to disable...");
|
|
(void)getchar();
|
|
}
|
|
|
|
if (wait || disable) {
|
|
if (profiling_disable(pid) < 0) {
|
|
perror("profiling_disable");
|
|
return 1;
|
|
}
|
|
outln("Profiling disabled.");
|
|
}
|
|
|
|
if (free && profiling_free_buffer(pid) < 0) {
|
|
perror("profiling_disable");
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
auto cmd_parts = String(cmd_argument).split(' ');
|
|
Vector<const char*> cmd_argv;
|
|
|
|
for (auto& part : cmd_parts)
|
|
cmd_argv.append(part.characters());
|
|
|
|
cmd_argv.append(nullptr);
|
|
|
|
dbgln("Enabling profiling for PID {}", getpid());
|
|
profiling_enable(getpid(), event_mask);
|
|
if (execvp(cmd_argv[0], const_cast<char**>(cmd_argv.data())) < 0) {
|
|
perror("execv");
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|