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/*
* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "net/dcsctp/socket/callback_deferrer.h"
#include "api/make_ref_counted.h"
namespace dcsctp {
void CallbackDeferrer::Prepare() {
RTC_DCHECK(!prepared_);
prepared_ = true;
}
void CallbackDeferrer::TriggerDeferred() {
// Need to swap here. The client may call into the library from within a
// callback, and that might result in adding new callbacks to this instance,
// and the vector can't be modified while iterated on.
RTC_DCHECK(prepared_);
prepared_ = false;
if (deferred_.empty()) {
return;
}
std::vector<std::pair<Callback, CallbackData>> deferred;
// Reserve a small buffer to prevent too much reallocation on growth.
deferred.reserve(8);
deferred.swap(deferred_);
for (auto& [cb, data] : deferred) {
cb(std::move(data), underlying_);
}
}
SendPacketStatus CallbackDeferrer::SendPacketWithStatus(
webrtc::ArrayView<const uint8_t> data) {
// Will not be deferred - call directly.
return underlying_.SendPacketWithStatus(data);
}
std::unique_ptr<Timeout> CallbackDeferrer::CreateTimeout(
webrtc::TaskQueueBase::DelayPrecision precision) {
// Will not be deferred - call directly.
return underlying_.CreateTimeout(precision);
}
TimeMs CallbackDeferrer::TimeMillis() {
// This should not be called by the library - it's migrated to `Now()`.
RTC_DCHECK(false);
// Will not be deferred - call directly.
return underlying_.TimeMillis();
}
uint32_t CallbackDeferrer::GetRandomInt(uint32_t low, uint32_t high) {
// Will not be deferred - call directly.
return underlying_.GetRandomInt(low, high);
}
void CallbackDeferrer::OnMessageReceived(DcSctpMessage message) {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData data, DcSctpSocketCallbacks& cb) {
return cb.OnMessageReceived(std::get<DcSctpMessage>(std::move(data)));
},
std::move(message));
}
void CallbackDeferrer::OnMessageReady() {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData data, DcSctpSocketCallbacks& cb) {
return cb.OnMessageReady();
},
std::monostate{});
}
void CallbackDeferrer::OnError(ErrorKind error, absl::string_view message) {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData data, DcSctpSocketCallbacks& cb) {
Error error = std::get<Error>(std::move(data));
return cb.OnError(error.error, error.message);
},
Error{error, std::string(message)});
}
void CallbackDeferrer::OnAborted(ErrorKind error, absl::string_view message) {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData data, DcSctpSocketCallbacks& cb) {
Error error = std::get<Error>(std::move(data));
return cb.OnAborted(error.error, error.message);
},
Error{error, std::string(message)});
}
void CallbackDeferrer::OnConnected() {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData /* data */, DcSctpSocketCallbacks& cb) {
return cb.OnConnected();
},
std::monostate{});
}
void CallbackDeferrer::OnClosed() {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData /* data */, DcSctpSocketCallbacks& cb) {
return cb.OnClosed();
},
std::monostate{});
}
void CallbackDeferrer::OnConnectionRestarted() {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData /* data */, DcSctpSocketCallbacks& cb) {
return cb.OnConnectionRestarted();
},
std::monostate{});
}
void CallbackDeferrer::OnStreamsResetFailed(
webrtc::ArrayView<const StreamID> outgoing_streams,
absl::string_view reason) {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData data, DcSctpSocketCallbacks& cb) {
StreamReset stream_reset = std::get<StreamReset>(std::move(data));
return cb.OnStreamsResetFailed(stream_reset.streams,
stream_reset.message);
},
StreamReset{{outgoing_streams.begin(), outgoing_streams.end()},
std::string(reason)});
}
void CallbackDeferrer::OnStreamsResetPerformed(
webrtc::ArrayView<const StreamID> outgoing_streams) {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData data, DcSctpSocketCallbacks& cb) {
StreamReset stream_reset = std::get<StreamReset>(std::move(data));
return cb.OnStreamsResetPerformed(stream_reset.streams);
},
StreamReset{{outgoing_streams.begin(), outgoing_streams.end()}});
}
void CallbackDeferrer::OnIncomingStreamsReset(
webrtc::ArrayView<const StreamID> incoming_streams) {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData data, DcSctpSocketCallbacks& cb) {
StreamReset stream_reset = std::get<StreamReset>(std::move(data));
return cb.OnIncomingStreamsReset(stream_reset.streams);
},
StreamReset{{incoming_streams.begin(), incoming_streams.end()}});
}
void CallbackDeferrer::OnBufferedAmountLow(StreamID stream_id) {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData data, DcSctpSocketCallbacks& cb) {
return cb.OnBufferedAmountLow(std::get<StreamID>(std::move(data)));
},
stream_id);
}
void CallbackDeferrer::OnTotalBufferedAmountLow() {
RTC_DCHECK(prepared_);
deferred_.emplace_back(
+[](CallbackData /* data */, DcSctpSocketCallbacks& cb) {
return cb.OnTotalBufferedAmountLow();
},
std::monostate{});
}
void CallbackDeferrer::OnLifecycleMessageExpired(LifecycleId lifecycle_id,
bool maybe_delivered) {
// Will not be deferred - call directly.
underlying_.OnLifecycleMessageExpired(lifecycle_id, maybe_delivered);
}
void CallbackDeferrer::OnLifecycleMessageFullySent(LifecycleId lifecycle_id) {
// Will not be deferred - call directly.
underlying_.OnLifecycleMessageFullySent(lifecycle_id);
}
void CallbackDeferrer::OnLifecycleMessageDelivered(LifecycleId lifecycle_id) {
// Will not be deferred - call directly.
underlying_.OnLifecycleMessageDelivered(lifecycle_id);
}
void CallbackDeferrer::OnLifecycleEnd(LifecycleId lifecycle_id) {
// Will not be deferred - call directly.
underlying_.OnLifecycleEnd(lifecycle_id);
}
} // namespace dcsctp
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