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Kernel: Some small refinements to the thread blockers.

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Committing some things my hands did while browsing through this code.

- Mark all leaf classes "final".
- FileDescriptionBlocker now stores a NonnullRefPtr<FileDescription>.
- FileDescriptionBlocker::blocked_description() now returns a reference.
- ConditionBlocker takes a Function&&.
This commit is contained in:
Andreas Kling 2019-07-19 13:19:47 +02:00
parent 80a6df9022
commit 705cd2491c
5 changed files with 49 additions and 54 deletions
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32
Kernel/Scheduler.cpp
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@ -51,67 +51,63 @@ void Scheduler::beep()
s_beep_timeout = g_uptime + 100;
}
Thread::FileDescriptionBlocker::FileDescriptionBlocker(const RefPtr<FileDescription>& description)
Thread::FileDescriptionBlocker::FileDescriptionBlocker(const FileDescription& description)
: m_blocked_description(description)
{}
RefPtr<FileDescription> Thread::FileDescriptionBlocker::blocked_description() const
const FileDescription& Thread::FileDescriptionBlocker::blocked_description() const
{
return m_blocked_description;
}
Thread::AcceptBlocker::AcceptBlocker(const RefPtr<FileDescription>& description)
Thread::AcceptBlocker::AcceptBlocker(const FileDescription& description)
: FileDescriptionBlocker(description)
{
}
bool Thread::AcceptBlocker::should_unblock(Thread&, time_t, long)
{
auto& description = *blocked_description();
auto& socket = *description.socket();
auto& socket = *blocked_description().socket();
return socket.can_accept();
}
Thread::ReceiveBlocker::ReceiveBlocker(const RefPtr<FileDescription>& description)
Thread::ReceiveBlocker::ReceiveBlocker(const FileDescription& description)
: FileDescriptionBlocker(description)
{
}
bool Thread::ReceiveBlocker::should_unblock(Thread&, time_t now_sec, long now_usec)
{
auto& description = *blocked_description();
auto& socket = *description.socket();
auto& socket = *blocked_description().socket();
// FIXME: Block until the amount of data wanted is available.
bool timed_out = now_sec > socket.receive_deadline().tv_sec || (now_sec == socket.receive_deadline().tv_sec && now_usec >= socket.receive_deadline().tv_usec);
if (timed_out || description.can_read())
if (timed_out || blocked_description().can_read())
return true;
return false;
}
Thread::ConnectBlocker::ConnectBlocker(const RefPtr<FileDescription>& description)
Thread::ConnectBlocker::ConnectBlocker(const FileDescription& description)
: FileDescriptionBlocker(description)
{
}
bool Thread::ConnectBlocker::should_unblock(Thread&, time_t, long)
{
auto& description = *blocked_description();
auto& socket = *description.socket();
auto& socket = *blocked_description().socket();
return socket.is_connected();
}
Thread::WriteBlocker::WriteBlocker(const RefPtr<FileDescription>& description)
Thread::WriteBlocker::WriteBlocker(const FileDescription& description)
: FileDescriptionBlocker(description)
{
}
bool Thread::WriteBlocker::should_unblock(Thread&, time_t, long)
{
return blocked_description()->can_write();
return blocked_description().can_write();
}
Thread::ReadBlocker::ReadBlocker(const RefPtr<FileDescription>& description)
Thread::ReadBlocker::ReadBlocker(const FileDescription& description)
: FileDescriptionBlocker(description)
{
}
@ -119,10 +115,10 @@ Thread::ReadBlocker::ReadBlocker(const RefPtr<FileDescription>& description)
bool Thread::ReadBlocker::should_unblock(Thread&, time_t, long)
{
// FIXME: Block until the amount of data wanted is available.
return blocked_description()->can_read();
return blocked_description().can_read();
}
Thread::ConditionBlocker::ConditionBlocker(const char* state_string, Function<bool()> &condition)
Thread::ConditionBlocker::ConditionBlocker(const char* state_string, Function<bool()>&& condition)
: m_block_until_condition(move(condition))
, m_state_string(state_string)
{