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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/crt/io/ChannelHandler.h>
#include <chrono>
namespace Aws
{
namespace Crt
{
namespace Io
{
int ChannelHandler::s_ProcessReadMessage(
struct aws_channel_handler *handler,
struct aws_channel_slot *,
struct aws_io_message *message)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
return channelHandler->ProcessReadMessage(message);
}
int ChannelHandler::s_ProcessWriteMessage(
struct aws_channel_handler *handler,
struct aws_channel_slot *,
struct aws_io_message *message)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
return channelHandler->ProcessWriteMessage(message);
}
int ChannelHandler::s_IncrementReadWindow(
struct aws_channel_handler *handler,
struct aws_channel_slot *,
size_t size)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
return channelHandler->IncrementReadWindow(size);
}
int ChannelHandler::s_ProcessShutdown(
struct aws_channel_handler *handler,
struct aws_channel_slot *,
enum aws_channel_direction dir,
int errorCode,
bool freeScarceResourcesImmediately)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
channelHandler->ProcessShutdown(
static_cast<ChannelDirection>(dir), errorCode, freeScarceResourcesImmediately);
return AWS_OP_SUCCESS;
}
size_t ChannelHandler::s_InitialWindowSize(struct aws_channel_handler *handler)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
return channelHandler->InitialWindowSize();
}
size_t ChannelHandler::s_MessageOverhead(struct aws_channel_handler *handler)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
return channelHandler->MessageOverhead();
}
void ChannelHandler::s_ResetStatistics(struct aws_channel_handler *handler)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
channelHandler->ResetStatistics();
}
void ChannelHandler::s_GatherStatistics(
struct aws_channel_handler *handler,
struct aws_array_list *statsList)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
channelHandler->GatherStatistics(statsList);
}
void ChannelHandler::s_Destroy(struct aws_channel_handler *handler)
{
auto *channelHandler = reinterpret_cast<ChannelHandler *>(handler->impl);
channelHandler->m_selfReference = nullptr;
}
struct aws_channel_handler_vtable ChannelHandler::s_vtable = {
s_ProcessReadMessage,
s_ProcessWriteMessage,
s_IncrementReadWindow,
s_ProcessShutdown,
s_InitialWindowSize,
s_MessageOverhead,
ChannelHandler::s_Destroy,
s_ResetStatistics,
s_GatherStatistics,
};
ChannelHandler::ChannelHandler(Allocator *allocator) : m_allocator(allocator)
{
AWS_ZERO_STRUCT(m_handler);
m_handler.alloc = allocator;
m_handler.impl = reinterpret_cast<void *>(this);
m_handler.vtable = &ChannelHandler::s_vtable;
}
struct aws_channel_handler *ChannelHandler::SeatForCInterop(const std::shared_ptr<ChannelHandler> &selfRef)
{
AWS_FATAL_ASSERT(this == selfRef.get());
m_selfReference = selfRef;
return &m_handler;
}
struct aws_io_message *ChannelHandler::AcquireMessageFromPool(MessageType messageType, size_t sizeHint)
{
return aws_channel_acquire_message_from_pool(
GetSlot()->channel, static_cast<aws_io_message_type>(messageType), sizeHint);
}
struct aws_io_message *ChannelHandler::AcquireMaxSizeMessageForWrite()
{
return aws_channel_slot_acquire_max_message_for_write(GetSlot());
}
void ChannelHandler::ShutDownChannel(int errorCode) { aws_channel_shutdown(GetSlot()->channel, errorCode); }
bool ChannelHandler::ChannelsThreadIsCallersThread() const
{
return aws_channel_thread_is_callers_thread(GetSlot()->channel);
}
bool ChannelHandler::SendMessage(struct aws_io_message *message, ChannelDirection direction)
{
return aws_channel_slot_send_message(
GetSlot(), message, static_cast<aws_channel_direction>(direction)) == AWS_OP_SUCCESS;
}
bool ChannelHandler::IncrementUpstreamReadWindow(size_t windowUpdateSize)
{
return aws_channel_slot_increment_read_window(GetSlot(), windowUpdateSize) == AWS_OP_SUCCESS;
}
void ChannelHandler::OnShutdownComplete(
ChannelDirection direction,
int errorCode,
bool freeScarceResourcesImmediately)
{
aws_channel_slot_on_handler_shutdown_complete(
GetSlot(),
static_cast<aws_channel_direction>(direction),
errorCode,
freeScarceResourcesImmediately);
}
size_t ChannelHandler::DownstreamReadWindow() const
{
if (!GetSlot()->adj_right)
{
return 0;
}
return aws_channel_slot_downstream_read_window(GetSlot());
}
size_t ChannelHandler::UpstreamMessageOverhead() const
{
return aws_channel_slot_upstream_message_overhead(GetSlot());
}
struct aws_channel_slot *ChannelHandler::GetSlot() const { return m_handler.slot; }
struct TaskWrapper
{
struct aws_channel_task task
{
};
Allocator *allocator{};
std::function<void(TaskStatus)> wrappingFn;
};
static void s_ChannelTaskCallback(struct aws_channel_task *, void *arg, enum aws_task_status status)
{
auto *taskWrapper = reinterpret_cast<TaskWrapper *>(arg);
taskWrapper->wrappingFn(static_cast<TaskStatus>(status));
Delete(taskWrapper, taskWrapper->allocator);
}
void ChannelHandler::ScheduleTask(std::function<void(TaskStatus)> &&task, std::chrono::nanoseconds run_in)
{
auto *wrapper = New<TaskWrapper>(m_allocator);
wrapper->wrappingFn = std::move(task);
wrapper->allocator = m_allocator;
aws_channel_task_init(
&wrapper->task, s_ChannelTaskCallback, wrapper, "cpp-crt-custom-channel-handler-task");
uint64_t currentTimestamp = 0;
aws_channel_current_clock_time(GetSlot()->channel, ¤tTimestamp);
aws_channel_schedule_task_future(GetSlot()->channel, &wrapper->task, currentTimestamp + run_in.count());
}
void ChannelHandler::ScheduleTask(std::function<void(TaskStatus)> &&task)
{
auto *wrapper = New<TaskWrapper>(m_allocator);
wrapper->wrappingFn = std::move(task);
wrapper->allocator = m_allocator;
aws_channel_task_init(
&wrapper->task, s_ChannelTaskCallback, wrapper, "cpp-crt-custom-channel-handler-task");
aws_channel_schedule_task_now(GetSlot()->channel, &wrapper->task);
}
} // namespace Io
} // namespace Crt
} // namespace Aws
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