mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 15:42:44 +00:00
11eee67b85
Until now, our kernel has reimplemented a number of AK classes to provide automatic internal locking: - RefPtr - NonnullRefPtr - WeakPtr - Weakable This patch renames the Kernel classes so that they can coexist with the original AK classes: - RefPtr => LockRefPtr - NonnullRefPtr => NonnullLockRefPtr - WeakPtr => LockWeakPtr - Weakable => LockWeakable The goal here is to eventually get rid of the Lock* classes in favor of using external locking.
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>
|
|
#include <Kernel/TimerQueue.h>
|
|
|
|
namespace Kernel {
|
|
|
|
ErrorOr<FlatPtr> Process::sys$alarm(unsigned seconds)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
|
|
TRY(require_promise(Pledge::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_lock_ref_or_enomem(new (nothrow) Timer));
|
|
}
|
|
auto timer_was_added = TimerQueue::the().add_timer_without_id(*m_alarm_timer, CLOCK_REALTIME_COARSE, deadline, [this]() {
|
|
MUST(send_signal(SIGALRM, nullptr));
|
|
});
|
|
if (!timer_was_added)
|
|
return ENOMEM;
|
|
}
|
|
return previous_alarm_remaining;
|
|
}
|
|
|
|
}
|