cSocketThreads initial commit. Not yet tested and not yet integrated
git-svn-id: http://mc-server.googlecode.com/svn/trunk@239 0a769ca7-a7f5-676a-18bf-c427514a06d6
This commit is contained in:
madmaxoft@gmail.com
parent
92981dcb3c
commit
16feb0924e
@ -451,6 +451,10 @@
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RelativePath="..\source\cSimulatorManager.h"
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>
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</File>
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<File
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RelativePath="..\source\cSocketThreads.h"
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>
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</File>
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<File
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RelativePath="..\source\cTracer.cpp"
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>
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@ -1450,6 +1454,10 @@
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RelativePath="..\source\cSocket.h"
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>
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</File>
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<File
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RelativePath="..\source\cSocketThreads.cpp"
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>
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</File>
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<File
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RelativePath="..\source\cTCPLink.cpp"
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>
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@ -1572,6 +1580,10 @@
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</File>
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</Filter>
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</Filter>
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<File
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RelativePath="..\makefile"
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>
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</File>
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</Files>
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<Globals>
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</Globals>
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@ -370,6 +370,7 @@
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<ClCompile Include="..\source\cSleep.cpp" />
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<ClCompile Include="..\source\cSlime.cpp" />
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<ClCompile Include="..\source\cSocket.cpp" />
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<ClCompile Include="..\source\cSocketThreads.cpp" />
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<ClCompile Include="..\source\cSpider.cpp" />
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<ClCompile Include="..\source\cSquid.cpp" />
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<ClCompile Include="..\source\cStringMap.cpp" />
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@ -530,6 +531,7 @@
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<ClInclude Include="..\source\cSleep.h" />
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<ClInclude Include="..\source\cSlime.h" />
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<ClInclude Include="..\source\cSocket.h" />
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<ClInclude Include="..\source\cSocketThreads.h" />
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<ClInclude Include="..\source\cSpider.h" />
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<ClInclude Include="..\source\cSquid.h" />
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<ClInclude Include="..\source\cStairs.h" />
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@ -911,6 +911,7 @@
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<ClCompile Include="..\source\cFile.cpp" />
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<ClCompile Include="..\source\StringUtils.cpp" />
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<ClCompile Include="..\source\cIsThread.cpp" />
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<ClCompile Include="..\source\cSocketThreads.cpp" />
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</ItemGroup>
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<ItemGroup>
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<ClInclude Include="..\source\cServer.h">
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@ -1403,6 +1404,7 @@
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<ClInclude Include="..\source\cFile.h" />
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<ClInclude Include="..\source\StringUtils.h" />
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<ClInclude Include="..\source\cIsThread.h" />
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<ClInclude Include="..\source\cSocketThreads.h" />
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</ItemGroup>
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<ItemGroup>
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<None Include="..\source\AllToLua.pkg">
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9
makefile
9
makefile
@ -259,7 +259,8 @@ MCServer : \
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build/cPlugin_NewLua.o\
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build/cWebPlugin_Lua.o\
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build/StringUtils.o\
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build/cIsThread.o
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build/cIsThread.o\
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build/cSocketThreads.o
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$(CC) $(LNK_OPTIONS) \
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build/json_reader.o\
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build/json_value.o\
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@ -472,6 +473,7 @@ MCServer : \
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build/cWebPlugin_Lua.o\
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build/StringUtils.o\
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build/cIsThread.o\
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build/cSocketThreads.o\
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-o MCServer
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clean :
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@ -686,6 +688,8 @@ clean :
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build/cPlugin_NewLua.o\
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build/cWebPlugin_Lua.o\
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build/StringUtils.o\
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build/cIsThread.o\
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build/cSocketThreads.o\
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MCServer
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install : MCServer
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@ -1549,4 +1553,7 @@ build/StringUtils.o : source/StringUtils.cpp
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build/cIsThread.o : source/cIsThread.cpp
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$(CC) $(CC_OPTIONS) source/cIsThread.cpp -c $(INCLUDE) -o build/cIsThread.o
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build/cSocketThreads.o : source/cSocketThreads.cpp
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$(CC) $(CC_OPTIONS) source/cSocketThreads.cpp -c $(INCLUDE) -o build/cSocketThreads.o
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##### END RUN ####
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472
source/cSocketThreads.cpp
Normal file
472
source/cSocketThreads.cpp
Normal file
@ -0,0 +1,472 @@
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// cSocketThreads.cpp
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// Implements the cSocketThreads class representing the heart of MCS's client networking.
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// This object takes care of network communication, groups sockets into threads and uses as little threads as possible for full read / write support
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// For more detail, see http://forum.mc-server.org/showthread.php?tid=327
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#include "Globals.h"
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#include "cSocketThreads.h"
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#include "cClientHandle.h"
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#include "packets/cPacket_RelativeEntityMoveLook.h"
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cSocketThreads:
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cSocketThreads::cSocketThreads(void)
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{
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}
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cSocketThreads::~cSocketThreads()
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{
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for (cSocketThreadList::iterator itr = m_Threads.begin(); itr != m_Threads.end(); ++itr)
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{
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delete *itr;
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} // for itr - m_Threads[]
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m_Threads.clear();
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}
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void cSocketThreads::AddClient(cSocket * a_Socket, cCallback * a_Client)
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{
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// Add a (socket, client) pair for processing, data from a_Socket is to be sent to a_Client
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// Try to add to existing threads:
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cCSLock Lock(m_CS);
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for (cSocketThreadList::iterator itr = m_Threads.begin(); itr != m_Threads.end(); ++itr)
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{
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if ((*itr)->HasEmptySlot())
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{
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(*itr)->AddClient(a_Socket, a_Client);
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return;
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}
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}
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// No thread has free space, create a new one:
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cSocketThread * Thread = new cSocketThread(this);
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Thread->Start();
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Thread->AddClient(a_Socket, a_Client);
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m_Threads.push_back(Thread);
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}
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void cSocketThreads::RemoveClient(cSocket * a_Socket)
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{
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// Remove the socket (and associated client) from processing
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cCSLock Lock(m_CS);
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for (cSocketThreadList::iterator itr = m_Threads.begin(); itr != m_Threads.end(); ++itr)
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{
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if ((*itr)->RemoveSocket(a_Socket))
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{
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return;
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}
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}
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}
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void cSocketThreads::RemoveClient(cCallback * a_Client)
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{
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// Remove the associated socket and the client from processing
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cCSLock Lock(m_CS);
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for (cSocketThreadList::iterator itr = m_Threads.begin(); itr != m_Threads.end(); ++itr)
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{
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if ((*itr)->RemoveClient(a_Client))
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{
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return;
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}
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}
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}
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void cSocketThreads::NotifyWrite(cCallback * a_Client)
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{
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// Notifies the thread responsible for a_Client that the client has something to write
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cCSLock Lock(m_CS);
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for (cSocketThreadList::iterator itr = m_Threads.begin(); itr != m_Threads.end(); ++itr)
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{
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if ((*itr)->NotifyWrite(a_Client))
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{
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return;
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// cSocketThreads::cSocketThread:
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cSocketThreads::cSocketThread::cSocketThread(cSocketThreads * a_Parent) :
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cIsThread("cSocketThread"),
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m_Parent(a_Parent),
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m_NumSlots(0)
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{
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// Nothing needed yet
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}
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void cSocketThreads::cSocketThread::AddClient(cSocket * a_Socket, cCallback * a_Client)
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{
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assert(m_NumSlots < MAX_SLOTS); // Use HasEmptySlot() to check before adding
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m_Slots[m_NumSlots].m_Client = a_Client;
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m_Slots[m_NumSlots].m_Socket = a_Socket;
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m_Slots[m_NumSlots].m_Outgoing.clear();
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m_NumSlots++;
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// Notify the thread of the change:
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assert(m_ControlSocket2.IsValid());
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m_ControlSocket2.Send("a", 1);
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}
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bool cSocketThreads::cSocketThread::RemoveClient(cCallback * a_Client)
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{
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// Returns true if removed, false if not found
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if (m_NumSlots == 0)
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{
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return false;
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}
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for (int i = m_NumSlots - 1; i > 0 ; --i)
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{
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if (m_Slots[i].m_Client != a_Client)
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{
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continue;
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}
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// Found, remove it:
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m_Slots[i] = m_Slots[m_NumSlots - 1];
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m_NumSlots--;
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// Notify the thread of the change:
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assert(m_ControlSocket2.IsValid());
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m_ControlSocket2.Send("r", 1);
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return true;
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} // for i - m_Slots[]
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// Not found
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return false;
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}
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bool cSocketThreads::cSocketThread::RemoveSocket(cSocket * a_Socket)
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{
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// Returns true if removed, false if not found
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if (m_NumSlots == 0)
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{
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return false;
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}
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for (int i = m_NumSlots - 1; i > 0 ; --i)
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{
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if (m_Slots[i].m_Socket != a_Socket)
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{
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continue;
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}
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// Found, remove it:
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m_Slots[i] = m_Slots[m_NumSlots - 1];
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m_NumSlots--;
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// Notify the thread of the change:
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assert(m_ControlSocket2.IsValid());
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m_ControlSocket2.Send("r", 1);
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return true;
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} // for i - m_Slots[]
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// Not found
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return false;
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}
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bool cSocketThreads::cSocketThread::NotifyWrite(cCallback * a_Client)
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{
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if (HasClient(a_Client))
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{
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// Notify the thread that there's another packet in the queue:
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assert(m_ControlSocket2.IsValid());
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m_ControlSocket2.Send("q", 1);
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return true;
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}
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return false;
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}
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bool cSocketThreads::cSocketThread::HasClient(cCallback * a_Client) const
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{
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for (int i = m_NumSlots - 1; i >= 0; --i)
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{
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if (m_Slots[i].m_Client == a_Client)
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{
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return true;
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}
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} // for i - m_Slots[]
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return false;
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}
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bool cSocketThreads::cSocketThread::HasSocket(cSocket * a_Socket) const
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{
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for (int i = m_NumSlots - 1; i >= 0; --i)
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{
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if (m_Slots[i].m_Socket == a_Socket)
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{
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return true;
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}
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} // for i - m_Slots[]
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return false;
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}
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bool cSocketThreads::cSocketThread::Start(void)
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{
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// Create the control socket listener
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m_ControlSocket1 = cSocket::CreateSocket();
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if (!m_ControlSocket1.IsValid())
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{
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LOGERROR("Cannot create a Control socket for a cSocketThread (\"%s\"); continuing, but server may be unreachable from now on.", cSocket::GetLastErrorString().c_str());
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return false;
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}
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cSocket::SockAddr_In Addr;
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Addr.Family = cSocket::ADDRESS_FAMILY_INTERNET;
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Addr.Address = cSocket::INTERNET_ADDRESS_LOCALHOST;
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Addr.Port = 0; // Any free port is okay
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if (m_ControlSocket1.Bind(Addr) != 0)
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{
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LOGERROR("Cannot bind a Control socket for a cSocketThread (\"%s\"); continuing, but server may be unreachable from now on.", cSocket::GetLastErrorString().c_str());
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m_ControlSocket1.CloseSocket();
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return false;
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}
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if (m_ControlSocket1.GetPort() == 0)
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{
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LOGERROR("Cannot determine Control socket port (\"%s\"); conitnuing, but the server may be unreachable from now on.", cSocket::GetLastErrorString().c_str());
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m_ControlSocket1.CloseSocket();
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return false;
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}
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// Start the thread
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if (!super::Start())
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{
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m_ControlSocket1.CloseSocket();
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return false;
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}
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// Finish connecting the control socket by accepting connection from the thread's socket
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cSocket tmp = m_ControlSocket1.Accept();
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if (!tmp.IsValid())
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{
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LOGERROR("Cannot link Control sockets for a cSocketThread (\"%s\"); continuing, but server may be unreachable from now on.", cSocket::GetLastErrorString().c_str());
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m_ControlSocket1.CloseSocket();
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return false;
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}
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m_ControlSocket1.CloseSocket();
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m_ControlSocket1 = tmp;
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return true;
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}
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void cSocketThreads::cSocketThread::Execute(void)
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{
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// Connect the "client" part of the Control socket:
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cSocket::SockAddr_In Addr;
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Addr.Family = cSocket::ADDRESS_FAMILY_INTERNET;
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Addr.Address = cSocket::INTERNET_ADDRESS_LOCALHOST;
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Addr.Port = m_ControlSocket1.GetPort();
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assert(Addr.Port != 0); // We checked in the Start() method, but let's be sure
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if (m_ControlSocket2.Connect(Addr) != 0)
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{
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LOGERROR("Cannot connect Control sockets for a cSocketThread (\"%s\"); continuing, but the server may be unreachable from now on.", cSocket::GetLastErrorString().c_str());
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m_ControlSocket1.CloseSocket();
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return;
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}
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// The main thread loop:
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while (!mShouldTerminate)
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{
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// Put all sockets into the Read set:
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fd_set fdRead;
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cSocket::xSocket Highest = 0;
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PrepareSet(&fdRead, Highest);
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// Wait for the sockets:
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if (select(Highest + 1, &fdRead, NULL, NULL, NULL) == -1)
|
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{
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LOGWARNING("select(R) call failed in cSocketThread: \"%s\"", cSocket::GetLastErrorString().c_str());
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break;
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}
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ReadFromSockets(&fdRead);
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// Test sockets for writing:
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fd_set fdWrite;
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Highest = 0;
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PrepareSet(&fdWrite, Highest);
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timeval Timeout;
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Timeout.tv_sec = 0;
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Timeout.tv_usec = 0;
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if (select(Highest + 1, NULL, &fdWrite, NULL, &Timeout) == -1)
|
||||
{
|
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LOGWARNING("select(W) call failed in cSocketThread: \"%s\"", cSocket::GetLastErrorString().c_str());
|
||||
break;
|
||||
}
|
||||
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WriteToSockets(&fdWrite);
|
||||
} // while (!mShouldTerminate)
|
||||
|
||||
LOG("cSocketThread %p is terminating", this);
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
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void cSocketThreads::cSocketThread::PrepareSet(fd_set * a_Set, cSocket::xSocket & a_Highest)
|
||||
{
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FD_ZERO(a_Set);
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FD_SET(m_ControlSocket1.GetSocket(), a_Set);
|
||||
|
||||
cCSLock Lock(m_Parent->m_CS);
|
||||
for (int i = m_NumSlots - 1; i > 0; --i)
|
||||
{
|
||||
if (!m_Slots[i].m_Socket->IsValid())
|
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{
|
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continue;
|
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}
|
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cSocket::xSocket s = m_Slots[i].m_Socket->GetSocket();
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FD_SET(s, a_Set);
|
||||
if (s > a_Highest)
|
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{
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a_Highest = s;
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}
|
||||
} // for i - m_Slots[]
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
void cSocketThreads::cSocketThread::ReadFromSockets(fd_set * a_Read)
|
||||
{
|
||||
// Read on available sockets:
|
||||
cCSLock Lock(m_Parent->m_CS);
|
||||
for (int i = m_NumSlots - 1; i > 0; --i)
|
||||
{
|
||||
if (!FD_ISSET(m_Slots[i].m_Socket->GetSocket(), a_Read))
|
||||
{
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||||
continue;
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}
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char Buffer[1024];
|
||||
int Received = m_Slots[i].m_Socket->Receive(Buffer, ARRAYCOUNT(Buffer), 0);
|
||||
if (Received == 0)
|
||||
{
|
||||
// The socket has been closed by the remote party, close our socket and let it be removed after we process all reading
|
||||
m_Slots[i].m_Socket->CloseSocket();
|
||||
m_Slots[i].m_Client->SocketClosed();
|
||||
}
|
||||
else if (Received > 0)
|
||||
{
|
||||
m_Slots[i].m_Client->DataReceived(Buffer, Received);
|
||||
}
|
||||
else
|
||||
{
|
||||
// The socket has encountered an error, close it and let it be removed after we process all reading
|
||||
m_Slots[i].m_Socket->CloseSocket();
|
||||
m_Slots[i].m_Client->SocketClosed();
|
||||
}
|
||||
} // for i - m_Slots[]
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
void cSocketThreads::cSocketThread::WriteToSockets(fd_set * a_Write)
|
||||
{
|
||||
cCSLock Lock(m_Parent->m_CS);
|
||||
for (int i = m_NumSlots - 1; i > 0; --i)
|
||||
{
|
||||
if (!FD_ISSET(m_Slots[i].m_Socket->GetSocket(), a_Write))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
if (m_Slots[i].m_Outgoing.empty())
|
||||
{
|
||||
// Request another chunk of outgoing data:
|
||||
m_Slots[i].m_Client->GetOutgoingData(m_Slots[i].m_Outgoing);
|
||||
if (m_Slots[i].m_Outgoing.empty())
|
||||
{
|
||||
// Nothing ready yet
|
||||
continue;
|
||||
}
|
||||
} // if (outgoing data is empty)
|
||||
|
||||
int Sent = m_Slots[i].m_Socket->Send(m_Slots[i].m_Outgoing.data(), m_Slots[i].m_Outgoing.size());
|
||||
if (Sent < 0)
|
||||
{
|
||||
LOGWARNING("Error while writing to client \"%s\", disconnecting", m_Slots[i].m_Socket->GetIPString().c_str());
|
||||
m_Slots[i].m_Socket->CloseSocket();
|
||||
m_Slots[i].m_Client->SocketClosed();
|
||||
return;
|
||||
}
|
||||
m_Slots[i].m_Outgoing.erase(0, Sent);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
147
source/cSocketThreads.h
Normal file
147
source/cSocketThreads.h
Normal file
@ -0,0 +1,147 @@
|
||||
|
||||
// cSocketThreads.h
|
||||
|
||||
// Interfaces to the cSocketThreads class representing the heart of MCS's client networking.
|
||||
// This object takes care of network communication, groups sockets into threads and uses as little threads as possible for full read / write support
|
||||
// For more detail, see http://forum.mc-server.org/showthread.php?tid=327
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/// How many clients should one thread handle? (must be less than FD_SETSIZE - 1 for your platform)
|
||||
#define MAX_SLOTS 1
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
#pragma once
|
||||
#ifndef CSOCKETTHREADS_H_INCLUDED
|
||||
#define CSOCKETTHREADS_H_INCLUDED
|
||||
|
||||
#include "packets/cPacket.h"
|
||||
#include "cIsThread.h"
|
||||
|
||||
|
||||
|
||||
|
||||
// Check MAX_SLOTS:
|
||||
#if MAX_SLOTS >= FD_SETSIZE
|
||||
#error "MAX_SLOTS must be less than FD_SETSIZE - 1 for your platform! (otherwise select() won't work)"
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
// fwd:
|
||||
class cSocket;
|
||||
class cClientHandle;
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
class cSocketThreads
|
||||
{
|
||||
public:
|
||||
|
||||
// Clients of cSocketThreads must implement this interface to be able to communicate
|
||||
class cCallback
|
||||
{
|
||||
public:
|
||||
/// Called when data is received from the remote party
|
||||
virtual void DataReceived(const char * a_Data, int a_Size) = 0;
|
||||
|
||||
/// Called when data can be sent to remote party; the function is supposed to append outgoing data to a_Data
|
||||
virtual void GetOutgoingData(AString & a_Data) = 0;
|
||||
|
||||
/// Called when the socket has been closed for any reason
|
||||
virtual void SocketClosed(void) = 0;
|
||||
} ;
|
||||
|
||||
|
||||
cSocketThreads(void);
|
||||
~cSocketThreads();
|
||||
|
||||
/// Add a (socket, client) pair for processing, data from a_Socket is to be sent to a_Client
|
||||
void AddClient(cSocket * a_Socket, cCallback * a_Client);
|
||||
|
||||
/// Remove the socket (and associated client) from processing
|
||||
void RemoveClient(cSocket * a_Socket);
|
||||
|
||||
/// Remove the associated socket and the client from processing
|
||||
void RemoveClient(cCallback * a_Client);
|
||||
|
||||
/// Notify the thread responsible for a_Client that the client has something to write
|
||||
void NotifyWrite(cCallback * a_Client);
|
||||
|
||||
private:
|
||||
|
||||
class cSocketThread :
|
||||
public cIsThread
|
||||
{
|
||||
typedef cIsThread super;
|
||||
|
||||
public:
|
||||
|
||||
cSocketThread(cSocketThreads * a_Parent);
|
||||
|
||||
// All these methods assume parent's m_CS is locked
|
||||
bool HasEmptySlot(void) const {return m_NumSlots < MAX_SLOTS; }
|
||||
bool IsEmpty (void) const {return m_NumSlots == 0; }
|
||||
|
||||
void AddClient (cSocket * a_Socket, cCallback * a_Client);
|
||||
bool RemoveClient(cCallback * a_Client); // Returns true if removed, false if not found
|
||||
bool RemoveSocket(cSocket * a_Socket); // Returns true if removed, false if not found
|
||||
bool HasClient (cCallback * a_Client) const;
|
||||
bool HasSocket (cSocket * a_Socket) const;
|
||||
bool NotifyWrite (cCallback * a_Client); // Returns true if client handled by this thread
|
||||
|
||||
bool Start(void); // Hide the cIsThread's Start method, we need to provide our own startup to create the control socket
|
||||
|
||||
private:
|
||||
|
||||
cSocketThreads * m_Parent;
|
||||
|
||||
// Two ends of the control socket, the first is select()-ed, the second is written to for notifications
|
||||
cSocket m_ControlSocket1;
|
||||
cSocket m_ControlSocket2;
|
||||
|
||||
// Socket-client-packetqueues triplets.
|
||||
// Manipulation with these assumes that the parent's m_CS is locked
|
||||
struct sSlot
|
||||
{
|
||||
cSocket * m_Socket;
|
||||
cCallback * m_Client;
|
||||
AString m_Outgoing; // If sending writes only partial data, the rest is stored here for another send
|
||||
} ;
|
||||
sSlot m_Slots[MAX_SLOTS];
|
||||
int m_NumSlots; // Number of slots actually used
|
||||
|
||||
virtual void Execute(void) override;
|
||||
|
||||
void AddOrUpdatePacket(int a_Slot, cPacket * a_Packet); // Adds the packet to the specified slot, or updates an existing packet in that queue (EntityMoveLook filtering)
|
||||
|
||||
void PrepareSet (fd_set * a_Set, cSocket::xSocket & a_Highest); // Puts all sockets into the set, along with m_ControlSocket1
|
||||
void ReadFromSockets(fd_set * a_Read); // Reads from sockets indicated in a_Read
|
||||
void WriteToSockets (fd_set * a_Write); // Writes to sockets indicated in a_Write
|
||||
} ;
|
||||
|
||||
typedef std::list<cSocketThread *> cSocketThreadList;
|
||||
|
||||
|
||||
cCriticalSection m_CS;
|
||||
cSocketThreadList m_Threads;
|
||||
} ;
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
#endif // CSOCKETTHREADS_H_INCLUDED
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user