lay base for IPC work

src/frontend/qt_sdl/CMakeLists.txt

@@ -25,6 +25,7 @@ set(SOURCES_QT_SDL
     RAMInfoDialog.cpp
     TitleManagerDialog.cpp
     Input.cpp
+	IPC.cpp
     LAN_PCap.cpp
     LAN_Socket.cpp
     LocalMP.cpp

src/frontend/qt_sdl/IPC.cpp

@@ -0,0 +1,88 @@
+/*
+    Copyright 2016-2022 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <QSharedMemory>
+
+#include "IPC.h"
+
+
+namespace IPC
+{
+
+QSharedMemory* Buffer = nullptr;
+int InstanceID;
+
+
+void Init()
+{
+    InstanceID = 0;
+
+    Buffer = new QSharedMemory("melonIPC");
+
+    if (!Buffer->attach())
+    {
+        printf("IPC sharedmem doesn't exist. creating\n");
+        if (!Buffer->create(1024))
+        {
+            printf("IPC sharedmem create failed :(\n");
+            delete Buffer;
+            Buffer = nullptr;
+            return;
+        }
+
+        Buffer->lock();
+        memset(Buffer->data(), 0, Buffer->size());
+        Buffer->unlock();
+    }
+
+    Buffer->lock();
+    u8* data = (u8*)Buffer->data();
+    u16 mask = *(u16*)&data[0];
+    for (int i = 0; i < 16; i++)
+    {
+        if (!(mask & (1<<i)))
+        {
+            InstanceID = i;
+            *(u16*)&data[0] |= (1<<i);
+            break;
+        }
+    }
+    Buffer->unlock();
+
+    printf("IPC: instance ID %d\n", InstanceID);
+}
+
+void DeInit()
+{
+    if (Buffer)
+    {
+        Buffer->lock();
+        u8* data = (u8*)Buffer->data();
+        *(u16*)&data[0] &= ~(1<<InstanceID);
+        Buffer->unlock();
+
+        Buffer->detach();
+        delete Buffer;
+    }
+    Buffer = nullptr;
+}
+
+}

src/frontend/qt_sdl/IPC.h

@@ -0,0 +1,34 @@
+/*
+    Copyright 2016-2022 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#ifndef IPC_H
+#define IPC_H
+
+#include "types.h"
+
+namespace IPC
+{
+
+extern int InstanceID;
+
+void Init();
+void DeInit();
+
+}
+
+#endif // IPC_H

src/frontend/qt_sdl/Platform.cpp

@@ -38,6 +38,7 @@
 #include "LAN_Socket.h"
 #include "LAN_PCap.h"
 #include "LocalMP.h"
+#include "IPC.h"
 #include "OSD.h"
 
 #ifdef __WIN32__
@@ -55,64 +56,6 @@ void emuStop();
 namespace Platform
 {
 
-QSharedMemory* IPCBuffer = nullptr;
-int IPCInstanceID;
-
-void IPCInit()
-{
-    IPCInstanceID = 0;
-
-    IPCBuffer = new QSharedMemory("melonIPC");
-
-    if (!IPCBuffer->attach())
-    {
-        Log(LogLevel::Info, "IPC sharedmem doesn't exist. creating\n");
-        if (!IPCBuffer->create(1024))
-        {
-            Log(LogLevel::Error, "IPC sharedmem create failed :(\n");
-            delete IPCBuffer;
-            IPCBuffer = nullptr;
-            return;
-        }
-
-        IPCBuffer->lock();
-        memset(IPCBuffer->data(), 0, IPCBuffer->size());
-        IPCBuffer->unlock();
-    }
-
-    IPCBuffer->lock();
-    u8* data = (u8*)IPCBuffer->data();
-    u16 mask = *(u16*)&data[0];
-    for (int i = 0; i < 16; i++)
-    {
-        if (!(mask & (1<<i)))
-        {
-            IPCInstanceID = i;
-            *(u16*)&data[0] |= (1<<i);
-            break;
-        }
-    }
-    IPCBuffer->unlock();
-
-    Log(LogLevel::Info, "IPC: instance ID %d\n", IPCInstanceID);
-}
-
-void IPCDeInit()
-{
-    if (IPCBuffer)
-    {
-        IPCBuffer->lock();
-        u8* data = (u8*)IPCBuffer->data();
-        *(u16*)&data[0] &= ~(1<<IPCInstanceID);
-        IPCBuffer->unlock();
-
-        IPCBuffer->detach();
-        delete IPCBuffer;
-    }
-    IPCBuffer = nullptr;
-}
-
-
 void Init(int argc, char** argv)
 {
 #if defined(__WIN32__) || defined(PORTABLE)
@@ -147,12 +90,12 @@ void Init(int argc, char** argv)
     EmuDirectory = confdir.toStdString();
 #endif
 
-    IPCInit();
+    IPC::Init();
 }
 
 void DeInit()
 {
-    IPCDeInit();
+    IPC::DeInit();
 }
 
 void SignalStop(StopReason reason)
@@ -178,12 +121,12 @@ void SignalStop(StopReason reason)
 
 int InstanceID()
 {
-    return IPCInstanceID;
+    return IPC::InstanceID;
 }
 
 std::string InstanceFileSuffix()
 {
-    int inst = IPCInstanceID;
+    int inst = IPC::InstanceID;
     if (inst == 0) return "";
 
     char suffix[16] = {0};