mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-30 00:31:14 +00:00
79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Process.h>
|
|
#include <Kernel/Time/TimeManagement.h>
|
|
|
|
namespace Kernel {
|
|
|
|
ErrorOr<FlatPtr> Process::sys$alarm(unsigned seconds)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
|
|
REQUIRE_PROMISE(stdio);
|
|
unsigned previous_alarm_remaining = 0;
|
|
if (m_alarm_timer) {
|
|
bool was_in_use = false;
|
|
if (TimerQueue::the().cancel_timer(*m_alarm_timer, &was_in_use)) {
|
|
// The timer hasn't fired. Round up the remaining time (if any)
|
|
Time remaining = m_alarm_timer->remaining() + Time::from_nanoseconds(999'999'999);
|
|
previous_alarm_remaining = remaining.to_truncated_seconds();
|
|
}
|
|
// We had an existing alarm, must return a non-zero value here!
|
|
if (was_in_use && previous_alarm_remaining == 0)
|
|
previous_alarm_remaining = 1;
|
|
}
|
|
|
|
if (seconds > 0) {
|
|
auto deadline = TimeManagement::the().current_time(CLOCK_REALTIME_COARSE);
|
|
deadline = deadline + Time::from_seconds(seconds);
|
|
if (!m_alarm_timer) {
|
|
m_alarm_timer = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) Timer));
|
|
}
|
|
auto timer_was_added = TimerQueue::the().add_timer_without_id(*m_alarm_timer, CLOCK_REALTIME_COARSE, deadline, [this]() {
|
|
[[maybe_unused]] auto rc = send_signal(SIGALRM, nullptr);
|
|
});
|
|
if (!timer_was_added)
|
|
return ENOMEM;
|
|
}
|
|
return previous_alarm_remaining;
|
|
}
|
|
|
|
}
|