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Codechange: Replace custom mutex code with C++11 mutex'es.

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A conforming compiler with a valid <mutex>-header is expected.
Most parts of the code assume that locking a mutex will never fail unexpectedly,
which is generally true on all common platforms that don't just pretend to
be C++11. The use of condition variables in driver code is checked.
This commit is contained in:
Michael Lutz
2019-03-11 00:45:39 +01:00
parent 3b86f54fc7
commit 05f4e73608
19 changed files with 187 additions and 426 deletions
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23
src/network/network_udp.cpp
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@@ -29,13 +29,14 @@
#include "../newgrf_text.h"
#include "../strings_func.h"
#include "table/strings.h"
#include <mutex>
#include "core/udp.h"
#include "../safeguards.h"
/** Mutex for all out threaded udp resolution and such. */
static ThreadMutex *_network_udp_mutex = ThreadMutex::New();
static std::mutex _network_udp_mutex;
/** Session key to register ourselves to the master server */
static uint64 _session_key = 0;
@@ -80,11 +81,11 @@ static void NetworkUDPQueryServer(NetworkAddress *address, bool needs_mutex, boo
item->manually = manually;
NetworkGameListAddItemDelayed(item);
if (needs_mutex) _network_udp_mutex->BeginCritical();
std::unique_lock<std::mutex> lock(_network_udp_mutex, std::defer_lock);
if (needs_mutex) lock.lock();
/* Init the packet */
Packet p(PACKET_UDP_CLIENT_FIND_SERVER);
if (_udp_client_socket != NULL) _udp_client_socket->SendPacket(&p, address);
if (needs_mutex) _network_udp_mutex->EndCritical();
}
/**
@@ -549,9 +550,8 @@ static void NetworkUDPRemoveAdvertiseThread(void *pntr)
p.Send_uint8 (NETWORK_MASTER_SERVER_VERSION);
p.Send_uint16(_settings_client.network.server_port);
_network_udp_mutex->BeginCritical();
std::lock_guard<std::mutex> lock(_network_udp_mutex);
if (_udp_master_socket != NULL) _udp_master_socket->SendPacket(&p, &out_addr, true);
_network_udp_mutex->EndCritical();
}
/**
@@ -603,9 +603,8 @@ static void NetworkUDPAdvertiseThread(void *pntr)
p.Send_uint16(_settings_client.network.server_port);
p.Send_uint64(_session_key);
_network_udp_mutex->BeginCritical();
std::lock_guard<std::mutex> lock(_network_udp_mutex);
if (_udp_master_socket != NULL) _udp_master_socket->SendPacket(&p, &out_addr, true);
_network_udp_mutex->EndCritical();
}
/**
@@ -660,7 +659,7 @@ void NetworkUDPInitialize()
DEBUG(net, 1, "[udp] initializing listeners");
assert(_udp_client_socket == NULL && _udp_server_socket == NULL && _udp_master_socket == NULL);
_network_udp_mutex->BeginCritical();
std::lock_guard<std::mutex> lock(_network_udp_mutex);
_udp_client_socket = new ClientNetworkUDPSocketHandler();
@@ -674,13 +673,12 @@ void NetworkUDPInitialize()
_network_udp_server = false;
_network_udp_broadcast = 0;
_network_udp_mutex->EndCritical();
}
/** Close all UDP related stuff. */
void NetworkUDPClose()
{
_network_udp_mutex->BeginCritical();
std::lock_guard<std::mutex> lock(_network_udp_mutex);
_udp_server_socket->Close();
_udp_master_socket->Close();
_udp_client_socket->Close();
@@ -690,7 +688,6 @@ void NetworkUDPClose()
_udp_client_socket = NULL;
_udp_server_socket = NULL;
_udp_master_socket = NULL;
_network_udp_mutex->EndCritical();
_network_udp_server = false;
_network_udp_broadcast = 0;
@@ -700,7 +697,7 @@ void NetworkUDPClose()
/** Receive the UDP packets. */
void NetworkBackgroundUDPLoop()
{
_network_udp_mutex->BeginCritical();
std::lock_guard<std::mutex> lock(_network_udp_mutex);
if (_network_udp_server) {
_udp_server_socket->ReceivePackets();
@@ -709,6 +706,4 @@ void NetworkBackgroundUDPLoop()
_udp_client_socket->ReceivePackets();
if (_network_udp_broadcast > 0) _network_udp_broadcast--;
}
_network_udp_mutex->EndCritical();
}