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Replace use of RecursiveCriticalSection in VirtualSocketServer

Browse source 
Also change listen_queue_ member to use std::unique_ptr to
manage ownership.

Bug: webrtc:11567
Change-Id: I85171c9cd0253fdbcbce38b1cfebb1adb5bddd9b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/223063
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34353}
This commit is contained in:
Niels Möller 2021-06-22 10:03:14 +02:00 committed by WebRTC LUCI CQ
parent fe6580fb87
commit c413c5581b
2 changed files with 25 additions and 24 deletions
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36
rtc_base/virtual_socket_server.cc
View file

@ -19,7 +19,6 @@
#include "absl/algorithm/container.h"
#include "rtc_base/checks.h"
#include "rtc_base/deprecated/recursive_critical_section.h"
#include "rtc_base/fake_clock.h"
#include "rtc_base/logging.h"
#include "rtc_base/physical_socket_server.h"
@ -164,7 +163,7 @@ int VirtualSocket::Close() {
}
if (SOCK_STREAM == type_) {
CritScope cs(&crit_);
webrtc::MutexLock lock(&mutex_);
// Cancel pending sockets
if (listen_queue_) {
@ -175,7 +174,6 @@ int VirtualSocket::Close() {
server_->Disconnect(addr);
listen_queue_->pop_front();
}
delete listen_queue_;
listen_queue_ = nullptr;
}
// Disconnect stream sockets
@ -234,7 +232,7 @@ int VirtualSocket::RecvFrom(void* pv,
*timestamp = -1;
}
CritScope cs(&crit_);
webrtc::MutexLock lock(&mutex_);
// If we don't have a packet, then either error or wait for one to arrive.
if (recv_buffer_.empty()) {
if (async_) {
@ -277,7 +275,7 @@ int VirtualSocket::RecvFrom(void* pv,
}
int VirtualSocket::Listen(int backlog) {
CritScope cs(&crit_);
webrtc::MutexLock lock(&mutex_);
RTC_DCHECK(SOCK_STREAM == type_);
RTC_DCHECK(CS_CLOSED == state_);
if (local_addr_.IsNil()) {
@ -285,13 +283,13 @@ int VirtualSocket::Listen(int backlog) {
return -1;
}
RTC_DCHECK(nullptr == listen_queue_);
listen_queue_ = new ListenQueue;
listen_queue_ = std::make_unique<ListenQueue>();
state_ = CS_CONNECTING;
return 0;
}
VirtualSocket* VirtualSocket::Accept(SocketAddress* paddr) {
CritScope cs(&crit_);
webrtc::MutexLock lock(&mutex_);
if (nullptr == listen_queue_) {
error_ = EINVAL;
return nullptr;
@ -310,7 +308,7 @@ VirtualSocket* VirtualSocket::Accept(SocketAddress* paddr) {
delete socket;
continue;
}
socket->CompleteConnect(remote_addr, false);
socket->CompleteConnect(remote_addr);
if (paddr) {
*paddr = remote_addr;
}
@ -349,9 +347,10 @@ int VirtualSocket::SetOption(Option opt, int value) {
void VirtualSocket::OnMessage(Message* pmsg) {
bool signal_read_event = false;
bool signal_close_event = false;
bool signal_connect_event = false;
int error_to_signal = 0;
{
CritScope cs(&crit_);
webrtc::MutexLock lock(&mutex_);
if (pmsg->message_id == MSG_ID_PACKET) {
RTC_DCHECK(nullptr != pmsg->pdata);
Packet* packet = static_cast<Packet*>(pmsg->pdata);
@ -365,7 +364,8 @@ void VirtualSocket::OnMessage(Message* pmsg) {
listen_queue_->push_back(data->addr);
signal_read_event = async_;
} else if ((SOCK_STREAM == type_) && (CS_CONNECTING == state_)) {
CompleteConnect(data->addr, true);
CompleteConnect(data->addr);
signal_connect_event = async_;
} else {
RTC_LOG(LS_VERBOSE)
<< "Socket at " << local_addr_.ToString() << " is not listening";
@ -386,14 +386,17 @@ void VirtualSocket::OnMessage(Message* pmsg) {
RTC_NOTREACHED();
}
}
// Signal events without holding `crit_`, to avoid lock order inversion with
// sigslot locks.
// Signal events without holding `mutex_`, to avoid recursive locking, as well
// as issues with sigslot and lock order.
if (signal_read_event) {
SignalReadEvent(this);
}
if (signal_close_event) {
SignalCloseEvent(this, error_to_signal);
}
if (signal_connect_event) {
SignalConnectEvent(this);
}
}
int VirtualSocket::InitiateConnect(const SocketAddress& addr, bool use_delay) {
@ -427,14 +430,11 @@ int VirtualSocket::InitiateConnect(const SocketAddress& addr, bool use_delay) {
return 0;
}
void VirtualSocket::CompleteConnect(const SocketAddress& addr, bool notify) {
void VirtualSocket::CompleteConnect(const SocketAddress& addr) {
RTC_DCHECK(CS_CONNECTING == state_);
remote_addr_ = addr;
state_ = CS_CONNECTED;
server_->AddConnection(remote_addr_, local_addr_, this);
if (async_ && notify) {
SignalConnectEvent(this);
}
}
int VirtualSocket::SendUdp(const void* pv,
@ -486,7 +486,7 @@ void VirtualSocket::OnSocketServerReadyToSend() {
}
void VirtualSocket::SetToBlocked() {
CritScope cs(&crit_);
webrtc::MutexLock lock(&mutex_);
ready_to_send_ = false;
error_ = EWOULDBLOCK;
}
@ -536,7 +536,7 @@ int64_t VirtualSocket::UpdateOrderedDelivery(int64_t ts) {
}
size_t VirtualSocket::PurgeNetworkPackets(int64_t cur_time) {
CritScope cs(&crit_);
webrtc::MutexLock lock(&mutex_);
while (!network_.empty() && (network_.front().done_time <= cur_time)) {
RTC_DCHECK(network_size_ >= network_.front().size);

13
rtc_base/virtual_socket_server.h
View file

@ -17,11 +17,11 @@
#include "rtc_base/checks.h"
#include "rtc_base/constructor_magic.h"
#include "rtc_base/deprecated/recursive_critical_section.h"
#include "rtc_base/event.h"
#include "rtc_base/fake_clock.h"
#include "rtc_base/message_handler.h"
#include "rtc_base/socket_server.h"
#include "rtc_base/synchronization/mutex.h"
namespace rtc {
@ -394,7 +394,7 @@ class VirtualSocket : public AsyncSocket,
typedef std::map<Option, int> OptionsMap;
int InitiateConnect(const SocketAddress& addr, bool use_delay);
void CompleteConnect(const SocketAddress& addr, bool notify);
void CompleteConnect(const SocketAddress& addr);
int SendUdp(const void* pv, size_t cb, const SocketAddress& addr);
int SendTcp(const void* pv, size_t cb);
@ -409,7 +409,8 @@ class VirtualSocket : public AsyncSocket,
SocketAddress remote_addr_;
// Pending sockets which can be Accepted
ListenQueue* listen_queue_ RTC_GUARDED_BY(crit_) RTC_PT_GUARDED_BY(crit_);
std::unique_ptr<ListenQueue> listen_queue_ RTC_GUARDED_BY(mutex_)
RTC_PT_GUARDED_BY(mutex_);
// Data which tcp has buffered for sending
SendBuffer send_buffer_;
@ -417,8 +418,8 @@ class VirtualSocket : public AsyncSocket,
// Set back to true when the socket can send again.
bool ready_to_send_ = true;
// Critical section to protect the recv_buffer and listen_queue_
RecursiveCriticalSection crit_;
// Mutex to protect the recv_buffer and listen_queue_
webrtc::Mutex mutex_;
// Network model that enforces bandwidth and capacity constraints
NetworkQueue network_;
@ -428,7 +429,7 @@ class VirtualSocket : public AsyncSocket,
int64_t last_delivery_time_ = 0;
// Data which has been received from the network
RecvBuffer recv_buffer_ RTC_GUARDED_BY(crit_);
RecvBuffer recv_buffer_ RTC_GUARDED_BY(mutex_);
// The amount of data which is in flight or in recv_buffer_
size_t recv_buffer_size_;