ladybird/Userland/Utilities/lsirq.cpp
Dan Klishch ccd701809f Everywhere: Add deprecated_ prefix to JsonValue::to_byte_string
`JsonValue::to_byte_string` has peculiar type-erasure semantics which is
not usually intended. Unfortunately, it also has a very stereotypical
name which does not warn about unexpected behavior. So let's prefix it
with `deprecated_` to make new code use `as_string` if it just wants to
get string value or `serialized<StringBuilder>` if it needs to do proper
serialization.
2024-01-12 17:41:34 -07:00

52 lines
1.6 KiB
C++

/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <LibCore/File.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
ErrorOr<int> serenity_main(Main::Arguments)
{
TRY(Core::System::pledge("stdio rpath"));
TRY(Core::System::unveil("/sys/kernel/interrupts", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
auto proc_interrupts = TRY(Core::File::open("/sys/kernel/interrupts"sv, Core::File::OpenMode::Read));
TRY(Core::System::pledge("stdio"));
auto file_contents = TRY(proc_interrupts->read_until_eof());
auto json = TRY(JsonValue::from_string(file_contents));
auto cpu_count = json.as_array().at(0).as_object().get_array("per_cpu_call_counts"sv)->size();
out(" "sv);
for (size_t i = 0; i < cpu_count; ++i) {
out("{:>10}", ByteString::formatted("CPU{}", i));
}
outln("");
json.as_array().for_each([cpu_count](JsonValue const& value) {
auto& handler = value.as_object();
auto purpose = handler.get_byte_string("purpose"sv).value_or({});
auto interrupt = handler.get_u8("interrupt_line"sv).value();
auto controller = handler.get_byte_string("controller"sv).value_or({});
auto call_counts = handler.get_array("per_cpu_call_counts"sv).value();
out("{:>4}: ", interrupt);
for (size_t i = 0; i < cpu_count; ++i)
out("{:>10}", call_counts[i].as_integer<u64>());
outln(" {:10} {:30}", controller, purpose);
});
return 0;
}