aboutsummaryrefslogtreecommitdiffstats
path: root/lib/asio/detail/impl/win_object_handle_service.ipp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/asio/detail/impl/win_object_handle_service.ipp')
-rw-r--r--lib/asio/detail/impl/win_object_handle_service.ipp449
1 files changed, 0 insertions, 449 deletions
diff --git a/lib/asio/detail/impl/win_object_handle_service.ipp b/lib/asio/detail/impl/win_object_handle_service.ipp
deleted file mode 100644
index c5e59d1..0000000
--- a/lib/asio/detail/impl/win_object_handle_service.ipp
+++ /dev/null
@@ -1,449 +0,0 @@
-//
-// detail/impl/win_object_handle_service.ipp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-// Copyright (c) 2011 Boris Schaeling (boris@highscore.de)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_IMPL_WIN_OBJECT_HANDLE_SERVICE_IPP
-#define ASIO_DETAIL_IMPL_WIN_OBJECT_HANDLE_SERVICE_IPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_WINDOWS_OBJECT_HANDLE)
-
-#include "asio/detail/win_object_handle_service.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-win_object_handle_service::win_object_handle_service(
- asio::io_context& io_context)
- : service_base<win_object_handle_service>(io_context),
- io_context_(asio::use_service<io_context_impl>(io_context)),
- mutex_(),
- impl_list_(0),
- shutdown_(false)
-{
-}
-
-void win_object_handle_service::shutdown()
-{
- mutex::scoped_lock lock(mutex_);
-
- // Setting this flag to true prevents new objects from being registered, and
- // new asynchronous wait operations from being started. We only need to worry
- // about cleaning up the operations that are currently in progress.
- shutdown_ = true;
-
- op_queue<operation> ops;
- for (implementation_type* impl = impl_list_; impl; impl = impl->next_)
- ops.push(impl->op_queue_);
-
- lock.unlock();
-
- io_context_.abandon_operations(ops);
-}
-
-void win_object_handle_service::construct(
- win_object_handle_service::implementation_type& impl)
-{
- impl.handle_ = INVALID_HANDLE_VALUE;
- impl.wait_handle_ = INVALID_HANDLE_VALUE;
- impl.owner_ = this;
-
- // Insert implementation into linked list of all implementations.
- mutex::scoped_lock lock(mutex_);
- if (!shutdown_)
- {
- impl.next_ = impl_list_;
- impl.prev_ = 0;
- if (impl_list_)
- impl_list_->prev_ = &impl;
- impl_list_ = &impl;
- }
-}
-
-void win_object_handle_service::move_construct(
- win_object_handle_service::implementation_type& impl,
- win_object_handle_service::implementation_type& other_impl)
-{
- mutex::scoped_lock lock(mutex_);
-
- // Insert implementation into linked list of all implementations.
- if (!shutdown_)
- {
- impl.next_ = impl_list_;
- impl.prev_ = 0;
- if (impl_list_)
- impl_list_->prev_ = &impl;
- impl_list_ = &impl;
- }
-
- impl.handle_ = other_impl.handle_;
- other_impl.handle_ = INVALID_HANDLE_VALUE;
- impl.wait_handle_ = other_impl.wait_handle_;
- other_impl.wait_handle_ = INVALID_HANDLE_VALUE;
- impl.op_queue_.push(other_impl.op_queue_);
- impl.owner_ = this;
-
- // We must not hold the lock while calling UnregisterWaitEx. This is because
- // the registered callback function might be invoked while we are waiting for
- // UnregisterWaitEx to complete.
- lock.unlock();
-
- if (impl.wait_handle_ != INVALID_HANDLE_VALUE)
- ::UnregisterWaitEx(impl.wait_handle_, INVALID_HANDLE_VALUE);
-
- if (!impl.op_queue_.empty())
- register_wait_callback(impl, lock);
-}
-
-void win_object_handle_service::move_assign(
- win_object_handle_service::implementation_type& impl,
- win_object_handle_service& other_service,
- win_object_handle_service::implementation_type& other_impl)
-{
- asio::error_code ignored_ec;
- close(impl, ignored_ec);
-
- mutex::scoped_lock lock(mutex_);
-
- if (this != &other_service)
- {
- // Remove implementation from linked list of all implementations.
- if (impl_list_ == &impl)
- impl_list_ = impl.next_;
- if (impl.prev_)
- impl.prev_->next_ = impl.next_;
- if (impl.next_)
- impl.next_->prev_= impl.prev_;
- impl.next_ = 0;
- impl.prev_ = 0;
- }
-
- impl.handle_ = other_impl.handle_;
- other_impl.handle_ = INVALID_HANDLE_VALUE;
- impl.wait_handle_ = other_impl.wait_handle_;
- other_impl.wait_handle_ = INVALID_HANDLE_VALUE;
- impl.op_queue_.push(other_impl.op_queue_);
- impl.owner_ = this;
-
- if (this != &other_service)
- {
- // Insert implementation into linked list of all implementations.
- impl.next_ = other_service.impl_list_;
- impl.prev_ = 0;
- if (other_service.impl_list_)
- other_service.impl_list_->prev_ = &impl;
- other_service.impl_list_ = &impl;
- }
-
- // We must not hold the lock while calling UnregisterWaitEx. This is because
- // the registered callback function might be invoked while we are waiting for
- // UnregisterWaitEx to complete.
- lock.unlock();
-
- if (impl.wait_handle_ != INVALID_HANDLE_VALUE)
- ::UnregisterWaitEx(impl.wait_handle_, INVALID_HANDLE_VALUE);
-
- if (!impl.op_queue_.empty())
- register_wait_callback(impl, lock);
-}
-
-void win_object_handle_service::destroy(
- win_object_handle_service::implementation_type& impl)
-{
- mutex::scoped_lock lock(mutex_);
-
- // Remove implementation from linked list of all implementations.
- if (impl_list_ == &impl)
- impl_list_ = impl.next_;
- if (impl.prev_)
- impl.prev_->next_ = impl.next_;
- if (impl.next_)
- impl.next_->prev_= impl.prev_;
- impl.next_ = 0;
- impl.prev_ = 0;
-
- if (is_open(impl))
- {
- ASIO_HANDLER_OPERATION((io_context_.context(), "object_handle",
- &impl, reinterpret_cast<uintmax_t>(impl.wait_handle_), "close"));
-
- HANDLE wait_handle = impl.wait_handle_;
- impl.wait_handle_ = INVALID_HANDLE_VALUE;
-
- op_queue<operation> ops;
- while (wait_op* op = impl.op_queue_.front())
- {
- op->ec_ = asio::error::operation_aborted;
- impl.op_queue_.pop();
- ops.push(op);
- }
-
- // We must not hold the lock while calling UnregisterWaitEx. This is
- // because the registered callback function might be invoked while we are
- // waiting for UnregisterWaitEx to complete.
- lock.unlock();
-
- if (wait_handle != INVALID_HANDLE_VALUE)
- ::UnregisterWaitEx(wait_handle, INVALID_HANDLE_VALUE);
-
- ::CloseHandle(impl.handle_);
- impl.handle_ = INVALID_HANDLE_VALUE;
-
- io_context_.post_deferred_completions(ops);
- }
-}
-
-asio::error_code win_object_handle_service::assign(
- win_object_handle_service::implementation_type& impl,
- const native_handle_type& handle, asio::error_code& ec)
-{
- if (is_open(impl))
- {
- ec = asio::error::already_open;
- return ec;
- }
-
- impl.handle_ = handle;
- ec = asio::error_code();
- return ec;
-}
-
-asio::error_code win_object_handle_service::close(
- win_object_handle_service::implementation_type& impl,
- asio::error_code& ec)
-{
- if (is_open(impl))
- {
- ASIO_HANDLER_OPERATION((io_context_.context(), "object_handle",
- &impl, reinterpret_cast<uintmax_t>(impl.wait_handle_), "close"));
-
- mutex::scoped_lock lock(mutex_);
-
- HANDLE wait_handle = impl.wait_handle_;
- impl.wait_handle_ = INVALID_HANDLE_VALUE;
-
- op_queue<operation> completed_ops;
- while (wait_op* op = impl.op_queue_.front())
- {
- impl.op_queue_.pop();
- op->ec_ = asio::error::operation_aborted;
- completed_ops.push(op);
- }
-
- // We must not hold the lock while calling UnregisterWaitEx. This is
- // because the registered callback function might be invoked while we are
- // waiting for UnregisterWaitEx to complete.
- lock.unlock();
-
- if (wait_handle != INVALID_HANDLE_VALUE)
- ::UnregisterWaitEx(wait_handle, INVALID_HANDLE_VALUE);
-
- if (::CloseHandle(impl.handle_))
- {
- impl.handle_ = INVALID_HANDLE_VALUE;
- ec = asio::error_code();
- }
- else
- {
- DWORD last_error = ::GetLastError();
- ec = asio::error_code(last_error,
- asio::error::get_system_category());
- }
-
- io_context_.post_deferred_completions(completed_ops);
- }
- else
- {
- ec = asio::error_code();
- }
-
- return ec;
-}
-
-asio::error_code win_object_handle_service::cancel(
- win_object_handle_service::implementation_type& impl,
- asio::error_code& ec)
-{
- if (is_open(impl))
- {
- ASIO_HANDLER_OPERATION((io_context_.context(), "object_handle",
- &impl, reinterpret_cast<uintmax_t>(impl.wait_handle_), "cancel"));
-
- mutex::scoped_lock lock(mutex_);
-
- HANDLE wait_handle = impl.wait_handle_;
- impl.wait_handle_ = INVALID_HANDLE_VALUE;
-
- op_queue<operation> completed_ops;
- while (wait_op* op = impl.op_queue_.front())
- {
- op->ec_ = asio::error::operation_aborted;
- impl.op_queue_.pop();
- completed_ops.push(op);
- }
-
- // We must not hold the lock while calling UnregisterWaitEx. This is
- // because the registered callback function might be invoked while we are
- // waiting for UnregisterWaitEx to complete.
- lock.unlock();
-
- if (wait_handle != INVALID_HANDLE_VALUE)
- ::UnregisterWaitEx(wait_handle, INVALID_HANDLE_VALUE);
-
- ec = asio::error_code();
-
- io_context_.post_deferred_completions(completed_ops);
- }
- else
- {
- ec = asio::error::bad_descriptor;
- }
-
- return ec;
-}
-
-void win_object_handle_service::wait(
- win_object_handle_service::implementation_type& impl,
- asio::error_code& ec)
-{
- switch (::WaitForSingleObject(impl.handle_, INFINITE))
- {
- case WAIT_FAILED:
- {
- DWORD last_error = ::GetLastError();
- ec = asio::error_code(last_error,
- asio::error::get_system_category());
- break;
- }
- case WAIT_OBJECT_0:
- case WAIT_ABANDONED:
- default:
- ec = asio::error_code();
- break;
- }
-}
-
-void win_object_handle_service::start_wait_op(
- win_object_handle_service::implementation_type& impl, wait_op* op)
-{
- io_context_.work_started();
-
- if (is_open(impl))
- {
- mutex::scoped_lock lock(mutex_);
-
- if (!shutdown_)
- {
- impl.op_queue_.push(op);
-
- // Only the first operation to be queued gets to register a wait callback.
- // Subsequent operations have to wait for the first to finish.
- if (impl.op_queue_.front() == op)
- register_wait_callback(impl, lock);
- }
- else
- {
- lock.unlock();
- io_context_.post_deferred_completion(op);
- }
- }
- else
- {
- op->ec_ = asio::error::bad_descriptor;
- io_context_.post_deferred_completion(op);
- }
-}
-
-void win_object_handle_service::register_wait_callback(
- win_object_handle_service::implementation_type& impl,
- mutex::scoped_lock& lock)
-{
- lock.lock();
-
- if (!RegisterWaitForSingleObject(&impl.wait_handle_,
- impl.handle_, &win_object_handle_service::wait_callback,
- &impl, INFINITE, WT_EXECUTEONLYONCE))
- {
- DWORD last_error = ::GetLastError();
- asio::error_code ec(last_error,
- asio::error::get_system_category());
-
- op_queue<operation> completed_ops;
- while (wait_op* op = impl.op_queue_.front())
- {
- op->ec_ = ec;
- impl.op_queue_.pop();
- completed_ops.push(op);
- }
-
- lock.unlock();
- io_context_.post_deferred_completions(completed_ops);
- }
-}
-
-void win_object_handle_service::wait_callback(PVOID param, BOOLEAN)
-{
- implementation_type* impl = static_cast<implementation_type*>(param);
- mutex::scoped_lock lock(impl->owner_->mutex_);
-
- if (impl->wait_handle_ != INVALID_HANDLE_VALUE)
- {
- ::UnregisterWaitEx(impl->wait_handle_, NULL);
- impl->wait_handle_ = INVALID_HANDLE_VALUE;
- }
-
- if (wait_op* op = impl->op_queue_.front())
- {
- op_queue<operation> completed_ops;
-
- op->ec_ = asio::error_code();
- impl->op_queue_.pop();
- completed_ops.push(op);
-
- if (!impl->op_queue_.empty())
- {
- if (!RegisterWaitForSingleObject(&impl->wait_handle_,
- impl->handle_, &win_object_handle_service::wait_callback,
- param, INFINITE, WT_EXECUTEONLYONCE))
- {
- DWORD last_error = ::GetLastError();
- asio::error_code ec(last_error,
- asio::error::get_system_category());
-
- while ((op = impl->op_queue_.front()) != 0)
- {
- op->ec_ = ec;
- impl->op_queue_.pop();
- completed_ops.push(op);
- }
- }
- }
-
- io_context_impl& ioc = impl->owner_->io_context_;
- lock.unlock();
- ioc.post_deferred_completions(completed_ops);
- }
-}
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_WINDOWS_OBJECT_HANDLE)
-
-#endif // ASIO_DETAIL_IMPL_WIN_OBJECT_HANDLE_SERVICE_IPP