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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
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4
Kernel/Net/LocalSocket.cpp
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@@ -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())