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Profiler: Allow specifying a PID to profile with --pid

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This commit is contained in:
Andreas Kling 2020-07-01 21:07:53 +02:00
parent 8d52e200ee
commit d4c92bd1b7
1 changed files with 25 additions and 18 deletions
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43
DevTools/Profiler/main.cpp
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@ -27,6 +27,7 @@
#include "Profile.h"
#include "ProfileTimelineWidget.h"
#include "RunningProcessesModel.h"
#include <LibCore/ArgsParser.h>
#include <LibCore/ElapsedTimer.h>
#include <LibCore/EventLoop.h>
#include <LibCore/Timer.h>
@ -49,23 +50,26 @@
#include <stdio.h>
#include <string.h>
static bool generate_profile();
static bool generate_profile(pid_t specified_pid);
int main(int argc, char** argv)
{
Core::ArgsParser args_parser;
int pid = 0;
args_parser.add_option(pid, "PID to profile", "pid", 'p', "PID");
args_parser.parse(argc, argv, false);
GUI::Application app(argc, argv);
const char* path = nullptr;
if (argc != 2) {
if (!generate_profile())
if (!generate_profile(pid))
return 0;
path = "/proc/profile";
} else {
path = argv[1];
}
printf("We're here!\n");
auto profile = Profile::load_from_perfcore_file(path);
if (!profile) {
@ -121,9 +125,9 @@ int main(int argc, char** argv)
return app.exec();
}
bool prompt_for_process_to_profile()
pid_t prompt_for_process_to_profile()
{
bool success = false;
pid_t pid = 0;
auto window = GUI::Window::construct();
window->set_title("Profiler");
Gfx::IntRect window_rect { 0, 0, 480, 360 };
@ -147,24 +151,18 @@ bool prompt_for_process_to_profile()
}
auto index = table_view.selection().first();
auto pid_as_variant = table_view.model()->data(index, GUI::Model::Role::Custom);
auto pid = pid_as_variant.as_i32();
if (profiling_enable(pid) < 0) {
int saved_errno = errno;
GUI::MessageBox::show(String::format("Unable to profile PID %d: %s", pid, strerror(saved_errno)), "Profiler", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK, window);
return;
}
success = true;
pid = pid_as_variant.as_i32();
GUI::Application::the().quit(0);
};
auto& cancel_button = button_container.add<GUI::Button>("Cancel");
cancel_button.on_click = [](auto) {
GUI::Application::the().quit(1);
GUI::Application::the().quit();
};
table_view.model()->update();
window->show();
return GUI::Application::the().exec() == 0;
GUI::Application::the().exec();
return pid;
}
bool prompt_to_stop_profiling()
@ -194,10 +192,19 @@ bool prompt_to_stop_profiling()
return GUI::Application::the().exec() == 0;
}
bool generate_profile()
bool generate_profile(pid_t pid)
{
if (!prompt_for_process_to_profile())
if (!pid) {
pid = prompt_for_process_to_profile();
if (!pid)
return false;
}
if (profiling_enable(pid) < 0) {
int saved_errno = errno;
GUI::MessageBox::show(String::format("Unable to profile PID %d: %s", pid, strerror(saved_errno)), "Profiler", GUI::MessageBox::Type::Error, GUI::MessageBox::InputType::OK);
return false;
}
if (!prompt_to_stop_profiling())
return false;