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AK: Simplify constructors and conversions from nullptr_t

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Problem:
- Many constructors are defined as `{}` rather than using the ` =
  default` compiler-provided constructor.
- Some types provide an implicit conversion operator from `nullptr_t`
  instead of requiring the caller to default construct. This violates
  the C++ Core Guidelines suggestion to declare single-argument
  constructors explicit
  (https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#c46-by-default-declare-single-argument-constructors-explicit).

Solution:
- Change default constructors to use the compiler-provided default
  constructor.
- Remove implicit conversion operators from `nullptr_t` and change
  usage to enforce type consistency without conversion.
This commit is contained in:
Lenny Maiorani 2021-01-10 16:29:28 -07:00 • committed by Andreas Kling
parent 9dc44bf8c4
commit e6f907a155
105 changed files with 300 additions and 244 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Kernel/Net/E1000NetworkAdapter.cpp
View file

@ -457,7 +457,7 @@ void E1000NetworkAdapter::send_raw(ReadonlyBytes payload)
sti();
break;
}
m_wait_queue.wait_on(nullptr, "E1000NetworkAdapter");
m_wait_queue.wait_on({}, "E1000NetworkAdapter");
}
#ifdef E1000_DEBUG
dbgln("E1000: Sent packet, status is now {:#02x}!", (u8)descriptor.status);

4
Kernel/Net/IPv4Socket.cpp
View file

@ -255,7 +255,7 @@ KResultOr<size_t> IPv4Socket::receive_byte_buffered(FileDescription& description
locker.unlock();
auto unblocked_flags = Thread::FileDescriptionBlocker::BlockFlags::None;
auto res = Thread::current()->block<Thread::ReadBlocker>(nullptr, description, unblocked_flags);
auto res = Thread::current()->block<Thread::ReadBlocker>({}, description, unblocked_flags);
locker.lock();
if (!((u32)unblocked_flags & (u32)Thread::FileDescriptionBlocker::BlockFlags::Read)) {
@ -306,7 +306,7 @@ KResultOr<size_t> IPv4Socket::receive_packet_buffered(FileDescription& descripti
locker.unlock();
auto unblocked_flags = Thread::FileDescriptionBlocker::BlockFlags::None;
auto res = Thread::current()->block<Thread::ReadBlocker>(nullptr, description, unblocked_flags);
auto res = Thread::current()->block<Thread::ReadBlocker>({}, description, unblocked_flags);
locker.lock();
if (!((u32)unblocked_flags & (u32)Thread::FileDescriptionBlocker::BlockFlags::Read)) {

4
Kernel/Net/LocalSocket.cpp
View file

@ -192,7 +192,7 @@ KResult LocalSocket::connect(FileDescription& description, Userspace<const socka
}
auto unblock_flags = Thread::FileDescriptionBlocker::BlockFlags::None;
if (Thread::current()->block<Thread::ConnectBlocker>(nullptr, description, unblock_flags).was_interrupted()) {
if (Thread::current()->block<Thread::ConnectBlocker>({}, description, unblock_flags).was_interrupted()) {
set_connect_side_role(Role::None);
return KResult(-EINTR);
}
@ -329,7 +329,7 @@ KResultOr<size_t> LocalSocket::recvfrom(FileDescription& description, UserOrKern
}
} else if (!can_read(description, 0)) {
auto unblock_flags = Thread::FileDescriptionBlocker::BlockFlags::None;
if (Thread::current()->block<Thread::ReadBlocker>(nullptr, description, unblock_flags).was_interrupted())
if (Thread::current()->block<Thread::ReadBlocker>({}, description, unblock_flags).was_interrupted())
return KResult(-EINTR);
}
if (!has_attached_peer(description) && socket_buffer->is_empty())

2
Kernel/Net/NetworkTask.cpp
View file

@ -114,7 +114,7 @@ void NetworkTask_main(void*)
for (;;) {
size_t packet_size = dequeue_packet(buffer, buffer_size, packet_timestamp);
if (!packet_size) {
packet_wait_queue.wait_on(nullptr, "NetworkTask");
packet_wait_queue.wait_on({}, "NetworkTask");
continue;
}
if (packet_size < sizeof(EthernetFrameHeader)) {

2
Kernel/Net/Routing.cpp
View file

@ -230,7 +230,7 @@ RoutingDecision route_to(const IPv4Address& target, const IPv4Address& source, c
adapter->send({ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, request);
Optional<MACAddress> addr;
if (!Thread::current()->block<ARPTableBlocker>(nullptr, next_hop_ip, addr).was_interrupted()) {
if (!Thread::current()->block<ARPTableBlocker>({}, next_hop_ip, addr).was_interrupted()) {
if (addr.has_value()) {
#ifdef ROUTING_DEBUG
klog() << "Routing: Got ARP response using adapter " << adapter->name().characters() << " for " << next_hop_ip.to_string().characters() << " (" << addr.value().to_string().characters() << ")";

2
Kernel/Net/TCPSocket.cpp
View file

@ -400,7 +400,7 @@ KResult TCPSocket::protocol_connect(FileDescription& description, ShouldBlock sh
if (should_block == ShouldBlock::Yes) {
locker.unlock();
auto unblock_flags = Thread::FileBlocker::BlockFlags::None;
if (Thread::current()->block<Thread::ConnectBlocker>(nullptr, description, unblock_flags).was_interrupted())
if (Thread::current()->block<Thread::ConnectBlocker>({}, description, unblock_flags).was_interrupted())
return KResult(-EINTR);
locker.lock();
ASSERT(setup_state() == SetupState::Completed);