Imported existing code

indra/test_apps/llplugintest/demo_plugin.cpp

@@ -0,0 +1,220 @@
+/** 
+ * @file demo_plugin.cpp
+ * @brief Test plugin to be loaded by the llplugin testbed.
+ *
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ * 
+ * Copyright (c) 2008-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include "llplugininstance.h"
+#include "llpluginmessage.h"
+#include "llpluginmessageclasses.h"
+
+// TODO: Make sure that the only symbol exported from this library is LLPluginInitEntryPoint
+
+class DemoPlugin
+{
+public:
+
+	static int init(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data);
+
+private:
+	DemoPlugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data);
+	~DemoPlugin();
+
+	static void staticReceiveMessage(const char *message_string, void **user_data);
+	void receiveMessage(const char *message_string);
+	void sendMessage(const LLPluginMessage &message);
+
+	LLPluginInstance::sendMessageFunction mHostSendFunction;
+	void *mHostUserData;
+	bool mDeleteMe;
+	
+	int mSharedSegmentFillValue;
+	void *mSharedSegmentBase;
+	size_t mSharedSegmentSize;
+};
+
+int DemoPlugin::init(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
+{
+	DemoPlugin *self = new DemoPlugin(host_send_func, host_user_data);
+	*plugin_send_func = staticReceiveMessage;
+	*plugin_user_data = (void*)self;
+
+	return 0;
+}
+
+DemoPlugin::DemoPlugin(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data)
+{
+	std::cerr << "DemoPlugin constructor" << std::endl;
+
+	mHostSendFunction = host_send_func;
+	mHostUserData = host_user_data;
+	mDeleteMe = false;
+	mSharedSegmentBase = NULL;
+	mSharedSegmentSize = 0;
+	mSharedSegmentFillValue = 0;
+}
+
+DemoPlugin::~DemoPlugin()
+{
+	std::cerr << "DemoPlugin destructor" << std::endl;
+}
+
+void DemoPlugin::staticReceiveMessage(const char *message_string, void **user_data)
+{
+	DemoPlugin *self = (DemoPlugin*)*user_data;
+	
+	if(self != NULL)
+	{
+		self->receiveMessage(message_string);
+	
+		// If the plugin has processed the delete message, delete it.
+		if(self->mDeleteMe)
+		{
+			delete self;
+			*user_data = NULL;
+		}
+	}
+}
+
+void DemoPlugin::receiveMessage(const char *message_string)
+{
+//	std::cerr << "DemoPlugin::receiveMessage: received message: \"" << message_string << "\"" << std::endl;
+	LLPluginMessage message_in;
+	
+	if(message_in.parse(message_string) >= 0)
+	{
+		std::string message_class = message_in.getClass();
+		std::string message_name = message_in.getName();
+		if(message_class == "base")
+		{
+			if(message_name == "init")
+			{
+				LLPluginMessage message("base", "init_response");
+				LLSD versions = LLSD::emptyMap();
+				versions[LLPLUGIN_MESSAGE_CLASS_BASE] = LLPLUGIN_MESSAGE_CLASS_BASE_VERSION;
+				versions[LLPLUGIN_MESSAGE_CLASS_MEDIA] = LLPLUGIN_MESSAGE_CLASS_MEDIA_VERSION;
+				message.setValueLLSD("versions", versions);
+				sendMessage(message);
+			}
+			else if(message_name == "idle")
+			{
+				// no response is necessary here.
+//				std::cerr << "DemoPlugin::receiveMessage: idle processing" << std::endl;
+				if(mSharedSegmentBase != NULL)
+				{
+					// Fill the shared memory segment
+					memset(mSharedSegmentBase, mSharedSegmentFillValue, mSharedSegmentSize);
+					// and increment the fill value
+					mSharedSegmentFillValue++;
+				}
+			}
+			else if(message_name == "shutdown")
+			{
+				sendMessage(LLPluginMessage("base", "shutdown_response"));
+				
+				mDeleteMe = true;
+			}
+			else if(message_name == "shm_added")
+			{
+				// Normally, we would check the name and match it up with something from another message.
+				// For this test, just fill any segment that comes in.
+				mSharedSegmentSize = (size_t)message_in.getValueS32("size");
+				mSharedSegmentBase = (void*)message_in.getValueU32("address");
+				
+				std::cerr << "DemoPlugin::receiveMessage: shared memory added, name: " << message_in.getValue("name") 
+					<< ", size: " << mSharedSegmentSize 
+					<< ", address: " << mSharedSegmentBase 
+					<< std::endl;
+
+				memset(mSharedSegmentBase, mSharedSegmentFillValue, mSharedSegmentSize);
+			
+			}
+			else if(message_name == "shm_remove")
+			{
+				std::cerr << "DemoPlugin::receiveMessage: shared memory remove" << std::endl;
+				
+				// Normally, we would check the name and match it up with something from another message.
+				// For this test, just stop filling the only segment we track.
+
+				mSharedSegmentBase = NULL;
+
+				// Send the response so it can be cleaned up.
+				LLPluginMessage message("base", "shm_remove_response");
+				message.setValue("name", message_in.getValue("name"));
+				sendMessage(message);
+			}
+			else
+			{
+				std::cerr << "DemoPlugin::receiveMessage: unknown base message: " << message_name << std::endl;
+			}
+		}
+		else
+		{
+			std::cerr << "DemoPlugin::receiveMessage: unknown message class: " << message_class << std::endl;
+		}
+
+	}
+}
+
+void DemoPlugin::sendMessage(const LLPluginMessage &message)
+{
+	std::string output = message.generate();
+	mHostSendFunction(output.c_str(), &mHostUserData);
+}
+
+
+extern "C"
+{
+#ifdef WIN32
+	__declspec(dllexport)
+#endif
+		int LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data);
+}
+
+int 
+#ifdef WIN32
+	__declspec(dllexport)
+#endif
+	LLPluginInitEntryPoint(LLPluginInstance::sendMessageFunction host_send_func, void *host_user_data, LLPluginInstance::sendMessageFunction *plugin_send_func, void **plugin_user_data)
+{
+	return DemoPlugin::init(host_send_func, host_user_data, plugin_send_func, plugin_user_data);
+}
+
+#ifdef WIN32
+int WINAPI DllEntryPoint( HINSTANCE hInstance, unsigned long reason, void* params )
+{
+	return 1;
+}
+#endif